阅读说明：本技术 键盘复合电极模组及发光触控键盘 (Keyboard composite electrode module and luminous touch keyboard ) 是由 詹金龙 游伟彦 周柏岳 于 2021-04-12 设计创作，主要内容包括：本发明关于一种键盘复合电极模组及发光触控键盘,发光触控键盘包含底板、多个键帽、连接至底板与多个键帽间的多个支撑机构、键盘复合电极模组。键盘复合电极模组设置于底板与复数键帽之间,以感应在复数键帽上非按压的移动并提供光线自键帽射出。键盘复合电极模组包含多个电极矩阵及光源电路。多个电极矩阵沿第一方向及第二方向连续排列,且在第二方向上相邻的两个电极矩阵不对齐。光源电路包含多个光源,多个光源一对一地设置于多个电极矩阵中,且每一光源在电极矩阵中的相对位置相同。本发明的发光触控键盘及其键盘复合电极模组即使在整合光源电路的情况下,仍使得各按键投影区可涵盖包含有光源的相同电极图案,故能降低电极布局设计的复杂度。(The invention relates to a keyboard composite electrode module and a luminous touch keyboard. The keyboard composite electrode module is arranged between the bottom plate and the plurality of keycaps to sense the non-pressing movement of the plurality of keycaps and provide light to be emitted from the keycaps. The keyboard composite electrode module comprises a plurality of electrode matrixes and a light source circuit. The plurality of electrode matrixes are continuously arranged along a first direction and a second direction, and two adjacent electrode matrixes in the second direction are not aligned. The light source circuit comprises a plurality of light sources which are arranged in a plurality of electrode matrixes one by one, and the relative positions of the light sources in the electrode matrixes are the same. The light-emitting touch keyboard and the keyboard composite electrode module thereof can still enable each key projection area to cover the same electrode pattern containing the light source even under the condition of integrating the light source circuit, thereby reducing the complexity of the electrode layout design.)

1. A keyboard composite electrode module, comprising:

an electrode-bearing structure;

a light source circuit disposed on the electrode carrying structure, the light source circuit including a plurality of light sources; and

a touch sensing circuit disposed on the electrode carrying structure, the touch sensing circuit comprising:

the plurality of first electrode serials extend along the first direction and are arranged at intervals in the second direction; to be provided with

A plurality of second electrode serials extending along the second direction and arranged at intervals in the first direction, the plurality of second electrode serials and the plurality of first electrode serials are arranged in a staggered way,

wherein, define a plurality of key set projection areas on the compound electrode module of the keyboard, every projection area of the key set covers the same key surface electrode pattern, and the electrode pattern of the key surface includes one of these multiple light sources.

2. The keyboard composite electrode module of claim 1, wherein the plurality of first electrode serials and the plurality of second electrode serials are staggered to form a plurality of electrode matrixes arranged along the first direction and the second direction, two adjacent electrode matrixes in the second direction are not aligned, each electrode matrix corresponds to a key projection area, and in each key projection area, the corresponding position of the light source in the electrode matrixes is the same.

3. The keyboard composite electrode module of claim 2, wherein a key gap layout projection is defined on the plurality of electrode matrices corresponding to each key projection area, the key gap layout projection surrounding the corresponding key projection area, each key gap layout projection encompassing a same key gap electrode pattern.

4. The keyboard composite electrode module of claim 1, wherein the light source circuit comprises a plurality of light source lines for electrically connecting the plurality of light sources, the plurality of light source lines extending along the first direction and spaced apart from each other in the second direction, such that the plurality of light source lines are serially spaced apart from the plurality of first electrodes and serially interleaved with the plurality of second electrodes.

5. The keyboard composite electrode module of claim 4, wherein the electrode supporting structure comprises a first substrate, the light source circuit, the plurality of first electrode serials and the plurality of second electrode serials are disposed on a same surface of the first substrate, and an insulating layer is disposed at a position where the plurality of second electrode serials, the light source circuit and the plurality of first electrode serials are alternately stacked, the insulating layer is disposed between the plurality of second electrode serials and the light source circuit and between the plurality of second electrode serials and the plurality of first electrode serials.

6. The keyboard composite electrode module of claim 5, wherein the light source circuit or the plurality of first electrode serials are located between the plurality of second electrode serials and the first substrate at a position where the plurality of second electrode serials are overlapped with the light source circuit and the plurality of first electrode serials in an interlaced manner.

7. The keyboard composite electrode module of claim 5, wherein the key surface electrode pattern further comprises a first trigger conductive portion and a second trigger conductive portion, wherein the first trigger conductive portion is formed by extending from a first electrode series, the second trigger conductive portion is formed by extending from a second electrode series, and the first trigger conductive portion and the second trigger conductive portion are electrically connected by a conductive connection portion.

8. The keyboard composite electrode module of claim 7, wherein the electrode supporting structure further comprises a second substrate disposed opposite to the first substrate and a spacer layer sandwiched between the first substrate and the second substrate, the key surface electrode pattern comprises the conductive connection portion, the conductive connection portion is formed on the second substrate, the spacer layer has an opening, the first triggering conductive portion and the second triggering conductive portion are disposed opposite to the opening and the conductive connection portion, and a portion of the keyboard composite electrode module corresponding to the first triggering conductive portion and the second triggering conductive portion can be pressed to electrically connect the first triggering conductive portion and the second triggering conductive portion through the opening.

9. The keyboard composite electrode module of claim 7, wherein the conductive connection portion comprises a contact surface, the first trigger conductive portion and the second trigger conductive portion comprise at least one contact line, respectively, and the first trigger conductive portion and the second trigger conductive portion are electrically connected to each other by the contact surface contacting the contact lines.

10. The keyboard composite electrode module of claim 4, wherein the electrode supporting structure comprises a first substrate, a second substrate disposed opposite to the first substrate, and a spacer layer sandwiched between the first substrate and the second substrate, the plurality of first electrode serials and the light source circuit are formed on a first upper surface of the first substrate, and the plurality of second electrode serials are formed on a second lower surface of the second substrate.

11. The keyboard composite electrode module of claim 10, wherein the key surface electrode pattern further comprises a first trigger conductive portion and a second trigger conductive portion, wherein the first trigger conductive portion is formed by extending from a first electrode series, the second trigger conductive portion is formed by extending from a second electrode series, the spacer layer has an opening, the first trigger conductive portion and the second trigger conductive portion are disposed opposite to the opening, and the keyboard composite electrode module can be pressed against the first trigger conductive portion and the second trigger conductive portion to make the first trigger conductive portion and the second trigger conductive portion approach each other through the opening.

12. The keyboard composite electrode module of claim 11, wherein the first trigger conductive part and the second trigger conductive part each comprise at least one contact line, and the first trigger conductive part and the second trigger conductive part are electrically connected to each other by the contact of the contact lines.

13. The keyboard composite electrode module of claim 12, wherein the contact line is one of a straight line, an arc, a ring, a rectangle, and a zigzag, or any combination thereof.

14. The keyboard composite electrode module of claim 4, wherein the electrode supporting structure comprises a substrate, the light source circuit and the touch sensing circuit are disposed on opposite surfaces of the substrate, respectively, and light provided by the plurality of light sources is transmitted from a position of the substrate where the plurality of first electrode serials and the plurality of second electrode serials are not disposed.

15. The keyboard composite electrode module of claim 1, wherein the first electrode string comprises a plurality of first main line segments and a plurality of first branch line segments, the plurality of first main line segments extend along the first direction and are linearly connected in series with each other, and the plurality of first branch line segments are spaced apart in the first direction and protrude from the plurality of first main line segments along the second direction.

16. The keyboard composite electrode module of claim 1, wherein the second electrode string comprises a plurality of second main line segments and a plurality of second branch line segments, the plurality of second main line segments extend along the second direction and are spaced apart and staggered in two rows along the first direction, and the plurality of second branch line segments are spaced apart along the second direction and connect adjacent second main line segments in the two rows along the first direction.

17. The keyboard composite electrode module of claim 1, wherein the key surface electrode patterns have the same layout of through holes.

18. A keyboard composite electrode module, comprising:

a plurality of electrode matrices which are continuously arranged in a first direction and a second direction, two of the electrode matrices adjacent in the second direction being offset from each other in the first direction without being aligned in the second direction, and at least two of the electrode matrices which are not aligned in the second direction being identical to each other, each of the electrode matrices comprising:

a plurality of first electrode serial sections; and

a plurality of second electrode serial sections, wherein the plurality of second electrode serial sections and the plurality of first electrode serial sections are arranged in a staggered manner; and

the light source circuit comprises a plurality of light source circuits and a plurality of light sources, the light sources are respectively electrically connected with the corresponding light source circuits, and the light sources are arranged in the electrode matrixes one by one.

19. The keyboard composite electrode module of claim 18, wherein the relative position of each light source in the corresponding electrode matrix is the same.

20. A keyboard composite electrode module is characterized by comprising a plurality of electrode matrixes and a light source circuit, wherein the electrode matrixes correspond to a plurality of key projection areas one to one, the electrode matrixes are arranged along a first direction and a second direction, at least two electrode matrixes which are not aligned in the second direction are identical to each other, the electrode matrixes comprise a plurality of electrodes which are arranged at intervals with the same electrode spacing, the size of the electrodes in the second direction is a function of the key center distance of the key projection areas, the electrode spacing and the number of rows and columns of the electrodes covered by the key center distance, the light source circuit comprises a plurality of light sources, the light sources are arranged in the electrode matrixes one to one, and the relative positions of the light sources in the electrode matrixes are identical.

21. The keyboard composite electrode module according to any one of claims 18 to 20, wherein at least two of the electrode matrices that are not aligned in the second direction have the same layout of perforations, the layout of perforations comprising at least one perforation located within the electrode matrix.

22. A light-emitting touch keyboard, comprising:

a base plate;

a plurality of keycaps arranged above the bottom plate;

the keyboard composite electrode module of any one of claims 1, 18 and 20, the keyboard composite electrode module disposed between the base plate and the plurality of key caps, the keyboard composite electrode module sensing non-pressing movement of an object on the plurality of key caps and providing light to emit from the plurality of key caps; and

the plurality of supporting mechanisms are correspondingly connected between the base plate and the plurality of keycaps, so that the keycaps can move up and down relative to the base plate and the keyboard composite electrode module through the corresponding supporting mechanisms.

23. The light-emitting touch keyboard of claim 22, wherein the keyboard electrode assembly further comprises a switch circuit, the switch circuit comprises a plurality of key switches respectively corresponding to the plurality of key caps, each of the key switches is formed by a first electrode string and a second electrode string, and is capable of being conducted by a conducting connection to generate the trigger signal.

24. The light-emitting touch keyboard of claim 23, wherein the keyboard compound electrode module comprises the conductive connection portions, and the conductive connection portions are spaced from and opposite to the corresponding key switches, and when the key cap is pressed, the key cap drives the keyboard compound electrode module to deform so that the key switches are triggered by the conductive connection portions.

25. The light-emitting touch keyboard of claim 22, further comprising a plurality of elastic restoring members disposed between the bottom plate and the plurality of key caps, wherein the conductive connecting portions are disposed on the corresponding elastic restoring members.

Technical Field

The present invention relates to a keyboard composite electrode module and a light-emitting touch keyboard, and more particularly, to a light-emitting touch keyboard having a keyboard composite electrode module, which integrates a touch sensing circuit and a light source circuit into a composite electrode module.

Background

The keyboard is mainly used for inputting text signals into the computer system. Through the evolution and integration of many years, the key layout on the keyboard gradually forms the international standard specification.

On the other hand, the touch pad provides different operation options for the user, and inputs touch signals to the computer system in a single-point or multi-point touch manner. Currently, touch control functions have been successfully incorporated on screens. However, attempts to integrate touch functionality into a physical keyboard without using a touch pad have not always resulted in satisfactory results in terms of operation, functionality and structure, and are particularly difficult when the touch functionality is intended to be integrated into a light-emitting keyboard.

Disclosure of Invention

The present invention is directed to a composite electrode module for a keyboard, which is incorporated into a keyboard structure to sense the non-pressing movement of an object on a key and provide light to emit from a key cap, so as to facilitate the operation of the keyboard in a dark environment.

According to an aspect of the present invention, the present invention provides a keyboard composite electrode module, including:

an electrode-bearing structure;

a light source circuit disposed on the electrode carrying structure, the light source circuit including a plurality of light sources; and

a touch sensing circuit disposed on the electrode carrying structure, the touch sensing circuit comprising:

the plurality of first electrode serials extend along the first direction and are arranged at intervals in the second direction; to be provided with

A plurality of second electrode serials extending along the second direction and arranged at intervals in the first direction, the plurality of second electrode serials and the plurality of first electrode serials are arranged in a staggered way,

wherein, define a plurality of key set projection areas on the compound electrode module of the keyboard, every projection area of the key set covers the same key surface electrode pattern, and the electrode pattern of the key surface includes one of these multiple light sources.

As an optional technical solution, the plurality of first electrode serials and the plurality of second electrode serials are staggered to form a plurality of electrode matrixes arranged along the first direction and the second direction, two adjacent electrode matrixes in the second direction are not aligned, each electrode matrix corresponds to one key projection area, and in each key projection area, the corresponding positions of the light source in the electrode matrixes are the same.

As an optional technical solution, a key gap layout projection is defined on the plurality of electrode matrices corresponding to each key projection area, the key gap layout projection surrounds the corresponding key projection area, and each key gap layout projection covers the same key gap electrode pattern.

As an optional technical solution, the light source circuit includes a plurality of light source lines for electrically connecting the plurality of light sources, and the plurality of light source lines extend along the first direction and are spaced apart from each other in the second direction, so that the plurality of light source lines are spaced apart from the plurality of first electrodes and are serially interleaved with the plurality of second electrodes.

As an optional technical solution, the electrode carrying structure includes a first substrate, the light source circuit, the plurality of first electrode serials and the plurality of second electrode serials are disposed on a same surface of the first substrate, and an insulating layer is disposed at a position where the plurality of second electrode serials, the light source circuit and the plurality of first electrode serials are alternately stacked, the insulating layer is disposed between the plurality of second electrode serials and the light source circuit, and between the plurality of second electrode serials and the plurality of first electrode serials.

As an optional technical solution, at a position where the plurality of second electrode serials are overlapped with the light source circuit and the plurality of first electrode serials in an interlaced manner, the light source circuit or the plurality of first electrode serials are located between the plurality of second electrode serials and the first substrate.

As an optional technical solution, the key surface electrode pattern further includes a first trigger conductive part and a second trigger conductive part, wherein the first trigger conductive part is formed by extending from a first electrode serial, the second trigger conductive part is formed by extending from a second electrode serial, and the first trigger conductive part and the second trigger conductive part are conducted by a conducting connection part.

As an optional technical solution, the electrode bearing structure further includes a second substrate disposed opposite to the first substrate, and a spacer layer interposed between the first substrate and the second substrate, the key surface electrode pattern includes the conductive connection portion, the conductive connection portion is formed on the second substrate, the spacer layer has an opening, the first trigger conductive portion and the second trigger conductive portion are disposed opposite to the opening and the conductive connection portion at an interval, and a portion of the keyboard composite electrode module corresponding to the first trigger conductive portion and the second trigger conductive portion can be pressed, so that the conductive connection portion electrically connects the first trigger conductive portion and the second trigger conductive portion through the opening.

As an optional technical solution, the conductive connection portion includes a contact surface, the first trigger conductive portion and the second trigger conductive portion respectively include at least one contact line, and the first trigger conductive portion and the second trigger conductive portion are electrically connected to each other by the contact surface contacting the contact lines.

As an optional technical solution, the electrode carrying structure includes a first substrate, a second substrate disposed opposite to the first substrate, and a spacer layer interposed between the first substrate and the second substrate, wherein the plurality of first electrode serials and the light source circuit are formed on a first upper surface of the first substrate, and the plurality of second electrode serials are formed on a second lower surface of the second substrate.

As an optional technical solution, the key surface electrode pattern further includes a first trigger conductive part and a second trigger conductive part, wherein the first trigger conductive part is formed by extending from a first electrode series, the second trigger conductive part is formed by extending from a second electrode series, the spacing layer has an opening, the first trigger conductive part and the second trigger conductive part are disposed at an interval corresponding to the opening, and a portion of the keyboard composite electrode module corresponding to the first trigger conductive part and the second trigger conductive part can be pressed, so that the first trigger conductive part and the second trigger conductive part approach each other through the opening.

As an optional technical solution, the first trigger conductive part and the second trigger conductive part respectively include at least one contact line, and the first trigger conductive part and the second trigger conductive part are electrically connected to each other by the contact of the contact lines.

As an optional technical scheme, the contact line is one of straight line, arc, ring, rectangle and zigzag or any combination thereof.

As an optional technical solution, the electrode carrying structure includes a substrate, the light source circuit and the touch sensing circuit are respectively disposed on opposite surfaces of the substrate, and light provided by the plurality of light sources is transmitted from a position where the plurality of first electrode serials and the plurality of second electrode serials are not disposed on the substrate.

As an optional technical solution, the first electrode string includes a plurality of first main line segments and a plurality of first branch line segments, the plurality of first main line segments extend along the first direction and are linearly connected in series with each other, and the plurality of first branch line segments are arranged at intervals in the first direction and protrude from the plurality of first main line segments along the second direction.

As an optional technical solution, the second electrode serial includes a plurality of second main line segments and a plurality of second branch line segments, the plurality of second main line segments extend along the second direction and are arranged at intervals and are staggered in the first direction to form two rows, and the plurality of second branch line segments are arranged at intervals along the second direction and are connected with adjacent second main line segments in the two rows along the first direction.

As an alternative solution, the key surface electrode patterns have the same perforation layout.

According to another aspect of the present invention, the present invention further provides a keyboard composite electrode module, including:

a plurality of electrode matrices which are continuously arranged in a first direction and a second direction, two of the electrode matrices adjacent in the second direction being offset from each other in the first direction without being aligned in the second direction, and at least two of the electrode matrices which are not aligned in the second direction being identical to each other, each of the electrode matrices comprising:

a plurality of first electrode serial sections; and

a plurality of second electrode serial sections, wherein the plurality of second electrode serial sections and the plurality of first electrode serial sections are arranged in a staggered manner; and

the light source circuit comprises a plurality of light source circuits and a plurality of light sources, the light sources are respectively electrically connected with the corresponding light source circuits, and the light sources are arranged in the electrode matrixes one by one.

As an optional technical solution, the relative position of each light source in the corresponding electrode matrix is the same.

According to another aspect of the present invention, a keyboard composite electrode module is further provided, which includes a plurality of electrode matrices and a light source circuit, wherein the plurality of electrode matrices correspond to the plurality of key projection areas one-to-one, the plurality of electrode matrices are arranged along a first direction and a second direction, at least two electrode matrices that are not aligned in the second direction are identical to each other, the electrode matrix includes a plurality of electrodes arranged at intervals with an identical electrode pitch, wherein a size of the electrode in the second direction is a function of a key center distance of the key projection areas, the electrode pitch, and a number of rows and columns of the electrodes covered by the key center distance, and the light source circuit includes a plurality of light sources, the plurality of light sources are disposed in the plurality of electrode matrices one-to-one, and relative positions of each of the light sources in the electrode matrix are identical.

As an alternative solution, at least two of the electrode matrices that are not aligned in the second direction have the same perforation layout, and the perforation layout includes at least one perforation located in the electrode matrix.

According to another aspect of the present invention, the present invention further provides a light-emitting touch keyboard, comprising:

a base plate;

a plurality of keycaps arranged above the bottom plate;

the keyboard composite electrode module is arranged between the bottom plate and the plurality of keycaps, senses non-pressing movement of an object on the plurality of keycaps and provides light rays to be emitted from the plurality of keycaps; and

the plurality of supporting mechanisms are correspondingly connected between the base plate and the plurality of keycaps, so that the keycaps can move up and down relative to the base plate and the keyboard composite electrode module through the corresponding supporting mechanisms.

As an optional technical solution, the keyboard composite electrode module further includes a switch circuit, the switch circuit includes a plurality of key switches respectively corresponding to the plurality of keycaps, each of the key switches is formed by a first electrode serial and a second electrode serial, and can be conducted by a conducting connection portion to generate a trigger signal.

As an optional technical solution, the keyboard composite electrode module includes the conductive connection portion, and the conductive connection portion and the corresponding key switch are disposed at an interval in an opposite manner, and when the key cap is pressed, the key cap drives the keyboard composite electrode module to deform so that the key switch is triggered by the conductive connection portion.

As optional technical solution, still contain a plurality of elasticity and reset the piece, this a plurality of elasticity resets and sets up between this bottom plate and these a plurality of key caps, and wherein this conduction connection portion sets up on this elasticity that corresponds resets.

In summary, the light-emitting touch keyboard and the keyboard composite electrode module thereof integrate the touch sensing circuit and the light source circuit into the same electrode module, thereby not only improving the operability and functionality of the keyboard, but also being more beneficial to the thinning of the keyboard. Moreover, even under the condition of integrating the light source circuit, the light-emitting touch keyboard and the keyboard composite electrode module thereof still enable each key projection area to cover the same electrode pattern containing the light source, thereby reducing the complexity of electrode layout design, improving the regularity of electrode induction performance and further improving the touch operation accuracy of the touch keyboard. In addition, through a single-layer integrated design that the electrode serial of touch sensing (used for sensing the non-pressing movement on the key to generate a touch signal), the trigger electrode (used for generating a character signal through the mechanical displacement contact conduction of the key) and the light source circuit (used for providing a light-emitting effect of light emitted from the keycap) are simultaneously formed on the keyboard composite electrode module, the thickness of the circuit layer of the light-emitting touch keyboard is further effectively reduced, and the thin design of the light-emitting touch keyboard is facilitated.

The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.

Drawings

Fig. 1A is an exploded view of a proposed light-emitting touch pad section member according to a first embodiment of the present invention.

FIG. 1B is a partial cross-sectional view of a light-emitting touch keyboard according to a first embodiment of the present invention.

Fig. 2A is a schematic layout view of a portion of electrodes of the keyboard composite electrode module shown in fig. 1A and 1B.

Fig. 2B is an enlarged view of the electrode patterns corresponding to the projection areas of three adjacent keys in fig. 2A.

Fig. 3A is an exploded view of the electrode pattern of fig. 2B split into a plurality of first electrode serials.

Fig. 3B is an exploded view of the electrode pattern of fig. 2B divided into a plurality of second electrode serials.

Fig. 3C is an exploded view of the light source circuit of fig. 2B with the electrode pattern split.

Fig. 3D is an exploded view of the electrode pattern in fig. 2B divided into a light source circuit and a plurality of first electrode serials.

Fig. 4 is a schematic diagram illustrating a corresponding relationship between the electrode layout and the conductive connection portion corresponding to a single key in fig. 1B.

Fig. 5A is a partial schematic view of the keyboard composite electrode module stacked on the substrate according to the first embodiment of the invention.

Fig. 5B is a partial cross-sectional view of fig. 5A to show an exemplary stacked structure of the light source circuit, the first electrode serial, and the second electrode serial on the substrate.

Fig. 6 is a schematic layout view of a portion of electrodes of a keyboard composite electrode module according to a second embodiment of the present invention.

Fig. 7A to 7C are exploded schematic views of the keyboard composite electrode module in fig. 6, in which fig. 7A shows that the touch sensing circuit and the light source circuit are disposed on the first substrate of the electrode carrying structure, fig. 7B shows that the spacing layer of the electrode carrying structure, and fig. 7C shows that the conductive connection portion is disposed on the second substrate of the electrode carrying structure.

Fig. 7D is a schematic diagram illustrating a corresponding relationship between the electrode layout and the conductive connection portion corresponding to a single key in fig. 6.

Fig. 8 is a schematic view of a partial electrode layout of a keyboard composite electrode module according to a third embodiment of the present invention.

Fig. 9A to 9C are exploded schematic views of the keyboard composite electrode module in fig. 8, in which fig. 9A shows that the first electrode serial of the touch sensing circuit and the light source circuit are disposed on the first substrate of the electrode carrying structure, fig. 9B shows that the spacing layer of the electrode carrying structure, and fig. 9C shows that the second electrode serial of the touch sensing circuit is disposed on the second substrate of the electrode carrying structure.

Fig. 10 is a schematic diagram of the electrode layout corresponding to a single key in fig. 8.

Fig. 11A is a schematic view of a partial electrode layout of a keyboard composite electrode module according to a fourth embodiment of the invention.

Fig. 11B is an enlarged view of the electrode patterns corresponding to the projection areas of three adjacent keys in fig. 11A.

Fig. 12A is an exploded view of the electrode pattern of fig. 11B split into a plurality of first electrode serials.

Fig. 12B is an exploded view of the electrode pattern of fig. 11B split into a plurality of second electrode serials.

Fig. 12C is an exploded view of the light source circuit of fig. 11B with the electrode pattern broken down.

Fig. 12D is an exploded view of the electrode pattern of fig. 11B divided into a light source circuit and a plurality of first electrode serials.

Fig. 13 is a schematic diagram illustrating a corresponding relationship between the electrode layout and the conductive connection portion corresponding to a single key in fig. 11B.

Detailed Description

The invention relates to a light-emitting touch keyboard which can reliably integrate a touch sensing circuit, a light source circuit and a keyboard to sense the non-pressing movement of an object on a plurality of keycaps and provide light emitted from the plurality of keycaps. Ideally, for a keyboard with equal size and regular matrix arrangement, the thin film circuit board is usually configured with a pair of trigger electrodes corresponding to each key press trigger. If the touch sensing circuit layer (having X-Y axis electrodes arranged in a regular matrix) is overlapped between the key components, when the key is pressed, the key can be pressed by the rubber elastic body to make contact and conduction with the pair of trigger electrodes, so as to generate a Text Signal (Signal for inputting letters/numbers/symbols) to execute the corresponding key input function. When the user does not press the key, the touch sensing circuit layer can sense a capacitance sensing value generated by non-pressing movement (such as single-point or multi-point contact/click/continuous movement) of the user on the surface of the key, and further generate a touch signal to execute a corresponding touch function. When the touch control keyboard needs to have a light-emitting function, the light source circuit can provide a light source corresponding to each key to form the light-emitting touch control keyboard, so that the touch control sensing circuit, the light source circuit and the thin film circuit board structure are integrated, and the thin design of the light-emitting touch control keyboard is facilitated.

However, for the keyboard and the keys which are not in regular matrix arrangement with equal size, the international standard layout adopts the staggered arrangement design; for example, more than 40 letter keys, i.e., one-time keys (square keys) or alphanumeric keys, with the largest number of characters, are usually keys for inputting english letters/numbers and several symbols. If the touch sensing circuit layers arranged in a regular matrix are directly overlapped to the keyboard framework, the X-Y axis electrode patterns corresponding to the projection range of each character key are different in principle. In other words, the character keys with the same size but arranged in a staggered way correspond to different X-Y axis electrode matrix patterns. Since the character key distribution area is the area with the highest knocking input frequency on the keyboard and is also the area which has the highest opportunity to switch the touch control function, different X-Y axis electrode matrix patterns can enable the touch control event group of each character key area to present different capacitance induction data groups.

Besides the limitations of different key sizes and staggered key arrangement, other factors cause poor touch sensing performance of the keyboard, and the invention finds out several problems. One is that the height of the touch object (e.g. finger or stylus in fig. 1B) moving in the touch area (covering multiple keys and the gaps between them, e.g. touch area 120 in fig. 1A) is different, and the media between the touch object and the touch electrode layer is different; for example, in fig. 1B, when the object O moves from the key surface to the key gap, the object O is easily slightly sunk into the key gap (e.g., the key gap layout 125), so that the object O has a height difference and a medium difference between the key surface and the touch electrodes (e.g., the key gap electrode patterns Mg1, Mg2 and the key surface electrode patterns Mf1, Mf2, Mf3 in the composite electrode module 14 of the keyboard in the embodiments described later), which results in large variability of touch sensing data, and it is difficult to adjust the threshold value (e.g., a certain capacitance value) of the trigger touch signal key by key. After all, the key gaps mainly comprise air media (or an additional keyboard frame), and the key surfaces below comprise a plurality of key elements for moving the keys up and down. Another problem is the openings in the touch electrodes, since the touch electrodes may need to be penetrated by the keyboard frame or key elements; especially, if the relative positions and the sizes of the plurality of openings are inconsistent, the shapes/sizes of some touch electrodes are incomplete and inconsistent, or the positions/numbers of the openings are inconsistent, so that the variability of touch sensing data is high. Because it is too complicated and difficult to customize the configuration of each local sensing area of each key, each character key is easily subjected to the problem of false triggering or no triggering of a breakpoint at different positions, and the configuration of the light source circuit further affects the consistency of the shapes/positions of the touch electrodes, which brings great challenges to the touch sensing homogenization or regularization of the light-emitting keyboard, and is one of the technical problems that can be overcome by the following embodiments of the present invention.

Please refer to fig. 1A and 1B. The touch keyboard 10 according to the first embodiment of the present invention includes a plurality of key structures 12 and a keyboard composite electrode module 14 structurally integrated with the plurality of key structures 12 (for simplicity, shown as a single component in fig. 1A and 1B). The key structure 12 includes a key cap 13, a bottom plate 15, an elastic restoring member 16, and a supporting structure 17 (not shown in fig. 1A for simplicity). The keycap 13 is disposed above the base plate 15. An elastic return member 16 (e.g., a rubber dome) is disposed between the key cap 13 and the base plate 15. The support structure 17 is connected between the key cap 13 and the base plate 15. The plurality of key structures 12 share the same backplane 15. The keyboard composite electrode module 14 is disposed between the bottom plate 15 and the plurality of keycaps 13. The key caps 13 can move up and down relative to the base plate 15 and the keyboard composite electrode module 14 via the corresponding support mechanisms 17. The keycap 13 moving downwards can press the elastic resetting piece 16, and the resilience force of the pressed elastic resetting piece 16 can drive the keycap 13 to move upwards to the original position. A virtual touch area 120 (only shown in fig. 1A) for a user's finger or a touch pen to perform a touch operation (including a non-pressing movement) is defined on the light-emitting touch keyboard 10, which is substantially located in the middle of the touch keyboard 10 and covers a plurality of key structures 12 (or top areas of key caps 13) and a plurality of key gap layouts 125 (a hatched area is shown in fig. 1A), wherein each key gap layout 125 correspondingly surrounds one key structure 12 (or key cap 13). The projection of the touch area 120 on the composite electrode module 14 (i.e., the touch area projection 140, shown in dashed lines in fig. 1A), the projection of the key cap 13 on the composite electrode module 14, i.e., the key projection area 18 (shown in dashed lines in fig. 1A), the projection of the key gap layout 125 on the composite electrode module 14, i.e., the key gap layout projection 143 (shown in a dashed line in fig. 1A), and the key gap layout projection 143 surrounding the corresponding key projection area 18. The touch area projection 140 covers the plurality of key projection areas 18 and the corresponding key space layout projections 143. The keyboard composite electrode module 14 can sense the non-pressing movement of the object O in the touch area 120 and provide light to emit from the plurality of keycaps 13.

In addition, in the first embodiment, some portions of the key caps 13 are text keys (text keys) of equal size, i.e. single-size keys/square keys or alphanumeric keys (alphanumeric keys), which can generate text signals to input english letters/numbers and symbols. Other parts of the key cap 13 surround the periphery of the square key, such as a small key (small key) or a multiple key (multi-size key) with a larger size. Typically, the front-most row of ESC/F1-F12 function keys are small key sizes, while the space key/Enter/Shift/Capsule Lock/Ctrl is a multiple key size. In this embodiment, the key structures 12 (or the key caps 13) corresponding to the touch area 120 have the same geometric dimension (e.g., square keys) and are arranged in four rows, including a first row of key combinations 121, a second row of key combinations 122, a third row of key combinations 123 and a fourth row of key combinations 124, where the key structures 12 in two adjacent rows are not aligned (i.e., arranged in a staggered manner) in the second direction W (e.g., the width direction). Therefore, the key projection areas 18 are also misaligned (i.e., arranged in a staggered manner) in the second direction W, as is the key space layout projection 143.

Please refer to fig. 2A and fig. 2B. In fig. 2A, only the electrodes of the keyboard composite electrode module 14 are shown to simplify the drawing; also, fig. 2A and 2B illustrate the key projection area 18, so as to observe the relative positions of the electrode layout of the keyboard composite electrode module 14 and the key projection area 18. The keyboard composite electrode module 14 includes a light source circuit 30 and a touch sensing circuit 40. The light source circuit 30 includes a plurality of light sources 31. The touch sensing circuit 40 includes a plurality of first electrode serials 20 (shown in the figure by thin solid lines) and a plurality of second electrode serials 22 (shown in the figure by thick solid lines). The plurality of first electrode serials 20 extend in a first direction L (for example, a longitudinal direction) and are arranged at intervals in a second direction W (for example, a width direction). The plurality of second electrode serials 22 extend along the second direction W and are arranged at intervals in the first direction L to be staggered with the plurality of first electrode serials 20. In the range of the touch area projection 140 corresponding to the touch area 120, each key projection area 18 covers the same key surface electrode pattern (e.g., Mf1, Mf2, Mf3), and each key surface electrode pattern (e.g., Mf1, Mf2, Mf3) includes one of the light sources 31. That is, in the combined electrode module 14 of the keyboard, the plurality of light sources 31 are disposed at positions corresponding to the plurality of key caps 13 one by one.

Specifically, the plurality of first electrode serials 20 and the plurality of second electrode serials 22 are staggered to form a plurality of electrode matrices M arranged in the first direction L and the second direction W. That is, a plurality of electrode matrixes M formed by the plurality of first electrode serials 20 and the plurality of second electrode serials 22 being alternately arranged are continuously arranged along the first direction L and the second direction W. Each electrode matrix M has the same electrode layout (e.g., the number, shape, position, etc. of the first electrode series/second electrode series are correspondingly the same). Each electrode matrix M corresponds to one key projection area 18, and two adjacent electrode matrices (e.g., Ma, Mb) in the second direction W are not aligned. In other words, the plurality of electrode matrices M correspond to the plurality of key projection areas 18 one-to-one. Therefore, the electrode matrix M is also arranged in the same way as the key projection area 18 in the touch area projection 140, wherein two adjacent electrode matrices M in the second direction W are not aligned.

As shown in FIG. 2B, three key projection areas 18 are also shown, labeled 18a, 18B, and 18c, respectively. For example, key projection area 18a corresponds to the second row of key groupings 122, while key projection areas 18b, 18c correspond to the first row of key groupings 121. Key projection area 18a is located within a corresponding electrode matrix (labeled Ma), key projection area 18b (adjacent key projection area 18a in second direction W) is located within a corresponding electrode matrix (labeled Mb), and key projection area 18c (adjacent key projection area 18b in first direction L and adjacent key projection area 18a in second direction W) is located within a corresponding electrode matrix (labeled Mc). Fig. 3A and 3B are schematic diagrams separately showing electrode layouts corresponding to the electrode array of fig. 2B corresponding to the first electrode series 20 and the second electrode series 22. For the electrode matrix Ma, it includes a plurality of first electrode serial sections 20a, 20b, 20c and a plurality of second electrode serial sections 22a, 22b, 22c, 22d, which are staggered with each other; the electrode matrix Mb includes a plurality of first electrode serial sections 20d, 20e, and 20f and a plurality of second electrode serial sections 22e, 22f, 22g, and 22h, which are arranged in a staggered manner; the electrode matrix Mc includes a plurality of first electrode serial sections 20g, 20h, and 20i and a plurality of second electrode serial sections 22i, 22j, 22k, and 22l, which are arranged in a staggered manner. The first electrode serial sections 20d, 20e, and 20f are respectively connected in series with the first electrode serial sections 20g, 20h, and 20i in the first direction L, the second electrode serial section 22a and the second electrode serial section 22k are connected in series in the second direction W, the second electrode serial section 22b and the second electrode serial section 22L are connected in series in the second direction W, the second electrode serial section 22c and the second electrode serial section 22e are connected in series in the second direction W, and the second electrode serial section 22d and the second electrode serial section 22f are connected in series in the second direction W.

As shown in fig. 2B, one of the key slot layout projections (shown in hatched area) surrounds the corresponding key projection area 18a (or so-called surrounding the corresponding electrode matrix Ma), and the other key slot layout projection (shown in hatched area) surrounds the corresponding key projection area 18B (or so-called surrounding the corresponding electrode matrix Mb). The two key gap layouts are projected to overlap adjacent to the electrode matrices Ma, Mb (key projection areas 18a, 18 b). In the first embodiment, the arrangement of the first electrode serials 20 and the second electrode serials 22 is specially designed, so that each keycap 13 (or the key structure 12) can correspond to the same electrode layout, thereby improving regularity of touch sensing data, reducing breakpoints of touch tracks, improving sensitivity of touch sensing, and simplifying design complexity of touch electrodes.

As shown in fig. 2A and 2B, an arrangement distance of the key projection areas 18 along the first direction L (e.g., a central distance between the key projection area 18B and the key projection area 18c (or between two adjacent key caps 13 in the first direction L) is defined as a key center distance PL. The key projection areas 18 corresponding to the first row of key combinations 121 and the second row of key combinations 122 are arranged in a staggered manner by a key center distance PL of 1/2; the key projection areas 18 corresponding to the second row of key combinations 122 and the third row of key combinations 123 are arranged in a staggered manner by a key center distance PL of 1/4; the key projection areas 18 corresponding to the third row of key combinations 123 and the fourth row of key combinations 124 are arranged at intervals of 1/2. For each electrode matrix M (e.g., the electrode matrix Ma), it includes three first electrode serial sections 20a to 20c and four second electrode serial sections 22a to 22 d. Therefore, as shown in fig. 2B, taking the electrode matrix Ma and the electrode matrix Mb as an example, the key center distance PL of the electrode matrix Ma, which is shifted to the right by 1/2 in the first direction L with respect to the electrode matrix Mb, is just a multiple (2 times in this example) of the arrangement pitch AL of the second electrode serial 22 in the first direction L, so that the second electrode serial sections 22c to 22d of the electrode matrix Ma can be aligned with the second electrode serial sections 22e to 22f of the electrode matrix Mb. The alignment result also occurs between the electrode matrixes M corresponding to different rows of key combinations, which is not described in detail herein. In addition, the arrangement pitch (i.e., the key center distance PL) between the electrode matrix Mb and the electrode matrix Mc in the first direction L is a multiple of the arrangement pitch AL (4 times in this example), so the electrode matrix Mb and the electrode matrix Mc can correspond to the same layout of the second electrode serial 22. The corresponding result of the electrode layout also occurs between the electrode matrixes M corresponding to the same row of key combinations, which is not described herein. In the first embodiment, the arrangement pitch of the key projection areas 18 along the second direction W (e.g., the center distance between the key projection areas 18a and 18b in the second direction W) is defined as a key pitch PW that is 3 times the arrangement pitch AW of the first electrode series 20 in the second direction W, so that the electrode matrices M (e.g., the electrode matrices Ma and Mb) adjacent to each other in the second direction W can correspond to the same layout of the first electrode series 20. Therefore, in the first embodiment, the key surface electrode patterns of each key projection area 18 covering the corresponding electrode matrix M are the same, for example, the key surface electrode patterns Mf1, Mf2, Mf3 of the key projection areas 18 a-18 c are the same (as shown in fig. 2B); each of the key gap layout projections 143 covers the same key gap electrode pattern, for example, the key gap electrode patterns Mg1, Mg2 covered by the key gap layout projections are the same (as shown in fig. 2B).

Specifically, the first electrode serials 20 and the second electrode serials 22 of the touch sensing circuit 40 may have a Manhattan electrode configuration (Manhattan electrode configuration). As shown in fig. 3A, each first electrode series 20 includes a plurality of first main line segments 20 'and a plurality of first branch line segments 20 "(the first main line segments 20' and the first branch line segments 20" are indicated by one first electrode series, and other first electrode series not indicated also have corresponding first main line segments and first branch line segments). The plurality of first main line segments 20' extend in the first direction L and are linearly connected in series with each other. The plurality of first branch line segments 20 ″ are arranged at intervals in the first direction L, and protrude from the plurality of first main line segments 20' in the second direction W. For example, a plurality of electrode matrices (e.g., Mb, Mc) arranged along the first direction L may be connected in series with each other by corresponding first main line segments 20 ', e.g., the first electrode serial segments 20 d-20 f are respectively connected in series with the first electrode serial segments 20 g-20 i in the first direction L by the first main line segments 20'. The plurality of first branch line segments 20 ″ are arranged at intervals in the first direction L and protrude from the corresponding first main line segments 20' along the second direction W. In this embodiment, the plurality of first branch line segments 20 ″ protrude toward both sides with equal length along the second direction W with the corresponding first main line segment 20' as a center, but not limited thereto. In other words, each first electrode serial 20 includes a dendritic electrode form formed by a serial trunk formed by a plurality of first main line segments 20' extending along the first direction L and connected in series linearly and a plurality of first branch line segments 20 ″ arranged at intervals on the serial trunk.

As shown in fig. 3B, each second electrode series 22 includes a plurality of second main line segments 22' and a plurality of second branch line segments 22 "(represented by one second electrode series). The plurality of second main line segments 22' extend along the second direction W and are arranged at intervals, and are staggered into two rows (e.g., left and right rows) in the first direction L. A plurality of second branch line segments 22 "are arranged at intervals in the second direction W and extend in the first direction L to connect adjacent second main line segments 22' in two columns. For example, the plurality of electrode matrices (e.g., Ma, Mb) arranged alternately along the second direction W may be connected in series by corresponding second main line segments 22 ', e.g., the second electrode serial segments 22c and the second electrode serial segments 22e are connected in series alternately by corresponding first main line segments 22' and a plurality of second branch line segments 22 ″ in two rows thereof along the first direction W. In other words, each second electrode series 22 includes a dendritic electrode form having a zigzag trunk formed by a plurality of second main line segments 22' arranged alternately along the first direction L and connected at intervals by a plurality of second branch line segments 22 ″.

Furthermore, referring to fig. 2B, fig. 3A and fig. 3B, the arrangement intervals of the first branch line segments 20 ″ of the first electrode serial 20 in the first direction L are substantially the same, so that the first branch line segments 20 ″ are respectively arranged between two adjacent second main line segments 22'. The arrangement intervals of the second branch line segments 22 "of the second electrode serials 22 in the second direction W are substantially the same, so that the second branch line segments 22" are respectively arranged between two adjacent first main line segments 20'. In other words, the plurality of second electrode serials 22 are interleaved with the first main line segments 20 'of the plurality of first electrode serials 20 only by a portion of the second main line segments 22'.

In addition, in the first embodiment, the arrangement of the first electrode serials 20 and the second electrode serials 22 is designed so that each keycap 13 (or key structure 12) can correspond to the same electrode layout. Please refer to fig. 2A and fig. 2B. The first electrode serials 20 and the second electrode serials 22 are arranged in a staggered manner to form uniform electrode distribution. The arrangement pitch AL of the second electrode serials 22 in the first direction L is also equivalent to the arrangement pitch of the adjacent second branch line segments 22 "(i.e. the distance between two midpoints of the adjacent second branch line segments 22") in the first direction L. The arrangement pitch AW of the first electrode serials 20 in the second direction W is also equivalent to the arrangement pitch of the adjacent first branch line segments 20 ″ in the second direction W (i.e. the distance between two midpoints of the adjacent first branch line segments 20 ″, which is equal to the distance between the adjacent first main line segments 20' in this embodiment). In practice, the length (or profile) of each first leg segment 20 "is in principle the same, and the dimension SW of a first leg segment 20" in the second direction W is a function of the key pitch PW, the gap DW between adjacent first leg segments 20 "in the second direction W, and the number of first leg segments 20" covered by the key pitch PW in the second direction W; the dimension SL of the second branch line segment 22 "in the first direction L is a function of the key pitch PL, the spacing DL of adjacent second branch line segments 22" in the first direction L, and the number of second branch line segments 22 "covered by the key pitch PL in the first direction L. For example:

SW＝(PW-DW*NW)/NW；

SL＝(PL-DL*NL)/NL；

where PW represents a key center distance PW of two adjacent key projection areas 18 (e.g., key projection areas 18a/18B or electrode matrix Ma/Mb in fig. 2B) in the second direction W, and PL is a key center distance of two adjacent key projection areas 18 (e.g., key projection areas 18B/18c or electrode matrix Mb/Mc in fig. 2B) in the first direction L. DW represents a gap DW in the second direction W between two adjacent first branch line segments 20 "in the key projection area 18 (e.g., key projection areas 18a/18B/18c in FIG. 2B) or in the electrode matrix M (e.g., Ma/Mb/Mc in FIG. 2B), and DL represents a gap DL in the first direction L between two adjacent second branch line segments 22" in the key projection area 18 (e.g., key projection areas 18a/18B/18c in FIG. 2B) or in the electrode matrix M (e.g., Ma/Mb/Mc in FIG. 2B). NW represents the number of electrode rows covered by the key pitch PW in the second direction W (corresponding to the number of first electrode serials 20 covered in the second direction W), and NL represents the number of electrode rows covered by the key pitch PL in the first direction L (corresponding to the number of second electrode serials 22 covered in the first direction L). SW represents the dimension of the first branch line segment 20 "in the second direction W and SL represents the dimension of the or the second branch line segment 22" in the first direction L.

The number of rows and columns (NW, NL) of the electrode matrix is equal to the number of rows and columns of the electrodes covered by the key center distance (PW, PL) in the aforementioned formula, since two adjacent electrode matrices M/Ma/Mb/Mc are arranged consecutively with a certain electrode pitch/and the electrode pitch of the whole keyboard composite electrode module 14 is usually similar or the same, the number of rows and columns (NW, NL) of the electrodes is also equal to the number of rows and columns (line-row around) of the electrodes covered by the single key projection area 18/18a/18b/18c or the electrode matrix M/Ma/Mb/Mc in the second direction W or the first direction L (i.e. one side) (equal to the total number of rows or columns of the electrodes in the single key projection area 18/18a/18b/18c or the electrode matrix M/Ma/Mb/Mc). For the electrode matrix Ma/Mb/Mc of fig. 2B, the number of electrode rows and columns covered by the electrode matrix/Ma/Mb/Mc in the first direction L is 4 (i.e., 4 second electrode serials 22), and the number of electrode rows and columns covered by the electrode matrix/Ma/Mb/Mc in the second direction W is 3 (i.e., 3 first electrode serials 20), which corresponds to the number of 4 electrode rows and columns covered by the key center distance PL (NL ═ 4), and the number of 3 electrode rows and columns covered by the PW (NW ═ 3). In other words, the length SW of the first branch line segment 20 ″ in the second direction W is equal to the key center distance PW minus the number of electrode columns NW multiplied by the electrode pitch DW, and divided by the number of electrode rows NW. Similarly, the length SL of the second branch line segment 22 "in the first direction L is equal to the key center distance PL minus the multiplier of the number of electrode columns NL and the electrode spacing DL, divided by the number of electrode rows and columns NL.

For the above and following examples of the present invention, a fixed electrode gap (DL/DW) and a fixed electrode size (SW/SL) are assumed. With respect to the formula for the second direction W, the dimension of any electrode in the second direction W is a function of the key center distance PW/electrode pitch DW/of the key projection area 18 and the number NW of rows and columns of electrodes in each electrode matrix Ma/Mb (or covered by the key center distance PW). Similarly, the above formula can also be used in the first direction L, i.e. the dimension of any electrode in the first direction L, as a function of the key center distance PL/electrode distance DL/of the key projection area 18 and the number NL of electrode rows in (or covered by) each electrode matrix Ma/Mb. In summary, the dimension in the second direction W/the dimension in the first direction L for electrodes of the same shape and size (e.g. the side length of a rectangle or the diagonal length of a diamond) can be analogized according to the above formula.

As shown in fig. 2B and fig. 3C, the light source circuit 30 includes a plurality of light source lines 32 for electrically connecting the plurality of light sources 31. The light source lines 32 extend along the first direction L and are spaced apart from each other in the second direction W, such that the light source lines 32 are spaced apart from the first electrode serials 20 and are interleaved with the second electrode serials 22. In each key projection area 18, the corresponding position of the light source 31 in the electrode matrix M is the same, and the corresponding configuration of the light source circuit 32 in the electrode matrix M is also the same. For example, the plurality of second electrode serials 22 are interleaved with the plurality of light source lines 32 only by a part of the second main line segments 22'. The paired light source lines 32 extend through the adjacently disposed electrode matrices (e.g., Mb, Mc) in the first direction L, and have electrical contacts extending toward each other. The light source 31 (e.g., LED) may be electrically connected to the pair of light source lines 32 by electrically connecting electrical contacts by surface mount technology. Therefore, each key projection area covers the same key surface electrode pattern (such as Mf1, Mf2 and Mf3), which is composed of a plurality of first electrode serial 20 parts, a plurality of second electrode serial 22 parts, a pair of light source circuit 32 parts and one light source 31.

It should be noted that, due to the arrangement of the light source circuit 30, the configuration of the first electrode serials 20 and the second electrode serials 22 in the touch sensing circuit 40 may be slightly changed. For example, a plurality of light source lines 32 extend along the first direction L and are spaced apart in the second direction W (i.e. the paired light source lines 32 are disposed between two adjacent first electrode serials 20 in the second direction W), so that the first branch line segment 20 ″ of the first electrode serials 20 adjacent to the light source lines 32 slightly changes corresponding to the routing of the light source lines 32 and the position of the light source 31, for example, the length is shortened to form an avoidance space for disposing the light source circuit 30. Since the relative positions of the light sources 31 in the corresponding electrode matrices M/Ma/Mb/Mc are the same, and the key surface electrode patterns (for example, Mf1/Mf2/Mf3) covered by each key projection area 18 are the same even when the light sources 31 are included, each keycap 13 (or key structure 12) can correspond to the same electrode layout, thereby improving regularity of touch sensing data, reducing touch trajectory breakpoints, improving touch sensing sensitivity, and simplifying design complexity of touch electrodes.

In addition, referring to fig. 3D, the plurality of light source lines 32 and the plurality of first electrode serials 20 in the light source circuit 30 extend along the first direction L and are disposed at intervals in the second direction W, so that the light source circuit 30 and the plurality of first electrode serials 20 can be integrated into an electrode design of the same layer, but not limited thereto. Depending on the design of the actual light source circuit, the light source lines 32 in the light source circuit 30 may extend along the second direction W and be spaced apart from each other in the first direction L, so as to be integrated with the second electrode serials 22 into the same layer of electrode design, or the light source circuit, the first electrode serials 20 and the second electrode serials 22 may be designed into different layers of electrodes respectively.

In addition, in the first embodiment, the keyboard composite electrode module 14 is located between the bottom plate 15 and the key cap 13, so the keyboard composite electrode module 14 has a plurality of through holes 141 (see fig. 2B) to provide a space required by the connection structure between the supporting structure 17 and the bottom plate 15. The perforations 141 are located directly below the key cap 13 and affect the key surface electrode pattern. As shown in fig. 3A/3B/3C, the key-surface electrode pattern Mf1 of the key projection area 18a has a perforation layout 141a (or defined by the perforation 141 corresponding to the key projection area 18a), the key-surface electrode pattern Mf2 of the key projection area 18B has a perforation layout 141B (or defined by the perforation 141 corresponding to the key projection area 18B), the key-surface electrode pattern Mf3 of the key projection area 18C has a perforation layout 141C (or defined by the perforation 141 corresponding to the key projection area 18C), and the perforation layouts 141a, 141B, and 141C are the same. That is, the key surface electrode patterns corresponding to each key projection area 18 have the same number of through holes and the same relative positions.

Referring to fig. 2B/3A/3C, the key-surface electrode pattern (e.g., Mf1, Mf2, Mf3) further includes a first trigger conductive portion 202 and a second trigger conductive portion 222, wherein the first trigger conductive portion 202 is formed by extending from a first electrode serial 20, and the second trigger conductive portion 222 is formed by extending from a second electrode serial 22. For example, in the electrode matrix M (Ma/Mb/Mc) corresponding to the key projection area 18, the first trigger conductive part 202 is formed by the first electrode series 20 adjacent to the center of the key projection area 18, and the second trigger conductive part 222 is formed by the second electrode series 22 adjacent to the center of the key projection area 18, so that the first trigger conductive part 202 and the second trigger conductive part 222 are opposite to each other without intersecting. In other words, in the light-emitting touch keyboard 10, the switch circuit 50 may include a plurality of key switches 52 formed by a plurality of pairs of the first trigger conductive part 202 and the second trigger conductive part 222, and the plurality of key switches 52 are disposed corresponding to the plurality of key caps 13 one by one.

As shown in fig. 4, the first conductive trigger part 202 and the second conductive trigger part 222 can be electrically connected through the conductive connection part 19. In one embodiment, the conductive connection portion 19 may be a conductive portion disposed on any component of the key 12, such as a conductive portion disposed on a downward protruding portion of the elastic reset element 16. In other words, the first triggering conductive part 202 and the second triggering conductive part 222 form a key switch 52, and the key cap 13 can be pressed downward to trigger the corresponding key switch 52, for example, the elastic reset element 16 is pressed to deform so that the conductive part serving as the conductive connecting part 19 is downward to contact the first triggering conductive part 202 and the second triggering conductive part 222 at the same time, so that the key switch 52 is triggered to generate a triggering signal (e.g., a text signal), thereby performing a corresponding key input function. In this embodiment, the conductive connection portion 19 includes a contact surface (e.g., a conductive material is substantially completely disposed on the bottom surface of the protrusion of the elastic reset element 16), and the first trigger conductive portion 202 and the second trigger conductive portion 222 respectively include at least one contact line, such that the first trigger conductive portion 202 and the second trigger conductive portion 222 are electrically connected to each other by the contact surface contacting with the contact lines, and further generate the trigger signal. In one embodiment, the contact line may be, for example, one of a straight line, an arc, a circle, a rectangle, and a zigzag, or any combination thereof.

As shown in fig. 5A and 5B, in the first embodiment, the keyboard composite electrode module 14 uses an electrode carrying structure of a single substrate to carry the light source circuit 30 and the touch sensing circuit 40. For example, the electrode carrying structure includes a first substrate 142'. The light source circuit 30, the plurality of first electrode serials 20 and the plurality of second electrode serials 22 are disposed on the same surface (for example, the first upper surface 142a facing the key cap 13) of the first substrate 142', and insulating layers 144 are disposed between the plurality of second electrode serials 22 and the light source circuit 30 and between the plurality of second electrode serials 22 and the plurality of first electrode serials 20 at the positions where the plurality of second electrode serials 22 and the light source circuit 30 are alternately stacked. For example, the light source circuit 30 (i.e., the plurality of light source lines 32) and the plurality of first electrode serials 20 may be formed on the first upper surface 142a of the first substrate 142 'at the same time by using a printing technique, for example, in an electrode layout as shown in fig. 3D, wherein the projections of the light source circuit 30 and the plurality of first electrode serials 20 on the first substrate 142' do not coincide. Then, a dot-like insulating layer may be formed on the light source lines 32 and the first electrode serials 20 (i.e., the first main line segments 20') to be intersected with the second electrode serials 22 by a printing technique. Next, a plurality of second electrode serials 22 can be formed on the first upper surface 142a of the first substrate 142 'by using a printing technique, for example, in the electrode layout shown in fig. 3B, such that the light source circuit 30 (or the plurality of first electrode serials 20) is located between the plurality of second electrode serials 22 and the first substrate 142' at the position where the plurality of second electrode serials 22 are overlapped with the light source circuit 30 and the plurality of first electrode serials 20. In other words, where the plurality of second electrode serials 22 are alternately stacked with the light source circuit 30 (or the first electrode serials 20), the second main line segment 22 'is stacked on the light source line 32 (or the first main line segment 20') via the insulating layer 144 instead of being directly formed on the first upper surface 142a, and where the plurality of second electrode serials 22 are not alternately stacked with the light source circuit 30 (or the first electrode serials 20), the plurality of second electrode serials 221 may be directly formed on the first upper surface 142 a. In this structure, a protective layer (not shown) may be further covered on the plurality of light source lines 32 (without electrical contacts), the plurality of first electrode serials 20 and the plurality of second electrode serials 22 for protection and insulation, and the light source 31 may be electrically connected to the corresponding electrical contacts of the light source lines 32 by a surface mounting technique, so as to form a three-in-one single-layer composite electrode module structure in which three circuits, i.e., the light source circuit 30, the touch sensing circuit 40, and the switch circuit 50, are formed on one substrate.

In the above embodiment, the keyboard composite electrode module 14 uses the electrode carrying structure 142 of a single substrate to carry the light source circuit 30 and the touch sensing circuit 40, but not limited thereto. In other embodiments, the keyboard composite electrode module 14 may support the light source circuit 30, the touch sensing circuit 40, the switch circuit 50, and the like by using an electrode supporting structure of a multi-layer substrate. Furthermore, the conductive connection portion for triggering the switch (e.g., the key switch 52) can also be integrated into the keyboard composite electrode module, rather than being disposed on the key member (e.g., the conductive portion of the elastic reset element 16). As shown in fig. 6 and fig. 7A to 7D, the electrode carrying structure includes a first substrate 142 ', a second substrate 146 ' and a spacer layer 144 '. The second substrate 146 ' is disposed opposite to the first substrate 142 ', and the spacer layer 144 ' is sandwiched between the first substrate 142 ' and the second substrate 146 '. As shown in fig. 7A, the light source circuit 50, the plurality of first electrode serials 20 (including the first trigger conductive part 202) and the plurality of second electrode serials 22 (including the second trigger conductive part 222) are disposed on the same surface (e.g., the first upper surface 142A) of the first substrate 142', and the configuration and the structural details of the light source circuit 50, the plurality of first electrode serials 20 and the plurality of second electrode serials 22 can refer to the related description of the foregoing embodiments (e.g., fig. 2A-5B), which is not repeated herein.

As shown in fig. 7B, the spacing layer 144' has a plurality of openings 144c, which are arranged one by one corresponding to the plurality of key switches 52 of the switching circuit 50. For example, each opening 144c is a through hole penetrating from the upper surface 144a to the lower surface 144b of the spacing layer 144 ', so that the first trigger conductive portion 202 and the second trigger conductive portion 222 formed on the first substrate 142' and constituting the key switch 52 can be exposed through the opening 146 c. The spacing layer 144' also has a plurality of through holes 144d corresponding to the plurality of light sources 31 for the corresponding light sources 31 to pass through. In addition, the spacing layer 144 ' may have a plurality of through holes 141 ' corresponding to the connection structure between the supporting structure 17 and the bottom plate 15, that is, the through holes 141 ' of the spacing layer 144 ' correspond to the through holes 141 of the first substrate 142 '.

As shown in fig. 7C, a plurality of conductive connection portions 146C are formed on the second substrate 146'. Specifically, the second substrate 146 ' has a second upper surface 146a and a second lower surface 146b, wherein the second upper surface 146a is a surface facing away from the first substrate 142 ', and the second lower surface 146b is a surface facing the first substrate 142 '. The conductive connection portions 146c are formed on the second lower surface 146b of the second substrate 146' and are disposed opposite to the key switches 52 (i.e., the first trigger conductive portions 202 and the second trigger conductive portions 222) through the corresponding openings 144 c. The second substrate 146' has a plurality of through holes 146d corresponding to the plurality of light sources 31 for the corresponding light sources 31 to pass through. In addition, the second substrate 146 ' may be formed with a plurality of through holes 141 "corresponding to the connection structure between the supporting structure 17 and the bottom plate 15, that is, the plurality of through holes 141" of the second substrate 146 ' are located corresponding to the plurality of through holes 141 ' of the spacing layer 144 ' and the plurality of through holes 141 of the first substrate 142 '. It should be noted that fig. 7C illustrates a perspective view of the layout of the conductive connection portion 146C through the second upper surface 146 a. As shown in fig. 7D, when the first substrate 142 ', the spacer layer 144 ' and the second substrate 146 ' are sequentially stacked from bottom to top, the drawings of fig. 7A, 7B and 7C may be sequentially stacked from bottom to top, so that the key surface electrode patterns covered by each key projection area 18 may have a configuration similar to that of fig. 4, wherein the first trigger conductive portions 202 and the second trigger conductive portions 222 are disposed opposite to the conductive connection portions 146C and the openings 144C at intervals. The portions of the keyboard composite electrode module 14 corresponding to the first trigger conductive portion 202 and the second trigger conductive portion 222 can be pressed, so that the conductive connection portion 146c is electrically connected to the first trigger conductive portion 202 and the second trigger conductive portion 222 through the opening 144 c. That is, when the key 13 is pressed, the key 13 moves toward the bottom plate 15 under the support of the support structure 17, and presses against the second substrate 146 'of the composite electrode module 14 through the elastic reset element 16, so that the second substrate 146' is partially deformed downward, and the conductive connection portion 146c contacts the first trigger conductive portion 202 and the second trigger conductive portion 222 through the opening 144c, thereby generating a trigger signal.

Furthermore, when the first substrate 142 ', the spacer layer 144' and the second substrate 146 'are sequentially stacked from bottom to top, the plurality of through holes 141' of the second substrate 146 ', the plurality of through holes 141' of the spacer layer 144 'and the plurality of through holes 141 of the first substrate 142' are aligned and communicated with each other, providing a space required for a connection structure between the support structure 17 and the bottom plate 15. The through holes 144d of the spacer layer 144 ' and the through holes 146d of the second substrate 146 ' are aligned and communicated with each other to allow the light sources 31 disposed on the first substrate 142 ' to pass through the through holes 144d and the through holes 146d from the lower surface 144b of the spacer layer 144 ' and to be exposed from the second upper surface 146a of the second substrate 146 ' in sequence. Thereby, the light provided by the light source 31 can be emitted from the corresponding keycap 13.

In the foregoing embodiments, the light source circuit 30, the touch sensing circuit 40 and the switch circuit 50 are all formed on the same surface of the same substrate, but not limited thereto. In other embodiments, the light source circuit 30, the touch sensing circuit 40 and the switch circuit 50 included in the keyboard composite electrode module 14 may be formed on the same or different substrates. As shown in fig. 8 and fig. 9A to 9C, the electrode carrying structure includes a first substrate 142 ', a second substrate 146 ' and a spacer layer 144 '. The second substrate 146 ' is disposed opposite to the first substrate 142 ', and the spacer layer 144 ' is sandwiched between the first substrate 142 ' and the second substrate 144 '. As shown in fig. 9A-9C, the light source circuit 50 and the plurality of first electrode serials 20 (including the first trigger conductive parts 202) are disposed on the same surface (e.g., the first upper surface 142a) of the first substrate 142 ', and the plurality of second electrode serials 22 (including the second trigger conductive parts 222) are formed on the second lower surface 146b of the second substrate 146'. In this embodiment, the configuration and the structure details of the light source circuit 50, the plurality of first electrode serials 20 and the plurality of second electrode serials 22 can be referred to the related description of the foregoing embodiments (for example, fig. 2A-5B), and the difference is only that the shapes of the first trigger conductive parts 202 and the second trigger conductive parts 222 are different (for example, the form of the linear contact lines). In this embodiment, the spacer layer 144' has similar structural details as in fig. 7B, and the layout of the plurality of second electrode serials 22 (including the second trigger conductive portions 222) illustrated in fig. 9C is seen through the second upper surface 146 a.

As shown in fig. 10, when the first substrate 142 ', the spacing layer 144 ' and the second substrate 146 ' are sequentially stacked from bottom to top, in the key surface electrode pattern corresponding to each key projection region 18, the first trigger conductive portion 202 and the second trigger conductive portion 222 are oppositely disposed at an interval corresponding to the opening 144c, and the portions of the keyboard composite electrode module 14 corresponding to the first trigger conductive portion 202 and the second trigger conductive portion 222 can be pressed, so that the first trigger conductive portion 202 and the second trigger conductive portion 222 are close to each other through the opening 144 c. That is, when the key 13 is pressed, the key 13 moves toward the bottom plate 15 under the support of the support structure 17, and presses against the second substrate 146 'of the composite electrode module 14 through the elastic reset element 16, so that the second substrate 146' is partially deformed downward, and the second trigger conductive portion 222 contacts the first trigger conductive portion 202 through the opening 144c, thereby generating a trigger signal. In addition, reference may be made to the related description of the foregoing embodiments regarding the arrangement relationship of the light source 31 and the connection structure between the support structure 17 and the base plate 15 in the electrode carrying structure.

In the foregoing embodiments, the configuration of the touch sensing circuit is described in the form of a dendritic electrode, but the configuration is not limited thereto. In other embodiments, each electrode series of the touch sensing circuit may have different electrode forms, such as rectangular, diamond, etc. Referring to fig. 11A and 11B, in the embodiment, the keyboard touch electrode module includes a plurality of first electrode serials 20 (shown in the figure by thin solid lines) and a plurality of second electrode serials 22 (shown in the figure by thick solid lines). Each first electrode series 20 comprises a plurality of first electrodes 24 connected in series, and each second electrode series 22 comprises a plurality of second electrodes 26 connected in series. The plurality of first electrode serials 20 extend linearly in parallel to the first direction L and are arranged in parallel at intervals in the second direction W; i.e. the first electrodes 24 in each first electrode series 20 are connected in a straight line. The plurality of second electrode serials 22 extend linearly in parallel to the second direction W and are arranged in parallel at intervals in the first direction L; i.e. the second electrodes 26 in each second electrode series 22 are connected in a straight line. The plurality of first electrode serials 20 and the plurality of second electrode serials 22 are arranged in a staggered mode and form an electrode uniform distribution. The plurality of first electrode serials 20 and the plurality of second electrode serials 22 form a plurality of identical electrode matrixes M, and are arranged in series along the first direction L and the second direction W. Each electrode matrix M has the same electrode layout (including the number, relative positions, etc. of the first electrodes 24 and the second electrodes 26). The plurality of electrode matrices M correspond to the plurality of key projection areas 18 one-to-one. Therefore, the electrode matrix M is also arranged in the same way as the key projection area 18 in the touch area projection 140, wherein two adjacent electrode matrices M in the second direction W are not aligned.

Similar to the configuration of fig. 2B, fig. 11B also illustrates three key projection areas, respectively labeled 18 a-18 c and their corresponding electrode matrices Ma-Mc, and the configuration of the plurality of first electrode serials 20 (including the first trigger conductive part 202) and the configuration of the plurality of second electrode serials 22 (including the second trigger conductive part 222) can be referred to fig. 12A and 12B, respectively. In each electrode matrix, the positional relationship between the plurality of first electrode serial sections (for example, 20a to 20c, 20d to 20f, and 20g to 20i) and the plurality of second electrode serial sections (for example, 22a to 22d, 22e to 22h, and 22i to 22l) can be referred to the description of the first embodiment. That is, the key surface electrode patterns of each key projection area 18 covering the corresponding electrode matrix M are the same, for example, the key surface electrode patterns Mf1, Mf2, Mf3 covered by the key projection areas 18 a-18 c are the same; each of the key gap layout projections covers the same key gap electrode pattern, for example, the key gap electrode patterns Mg1 and Mg2 covered by the key gap layout projections are the same; the hole layout of each key-plane electrode pattern is also the same, such as the hole layouts 141a, 141b, 141 c.

In this embodiment, the arrangement pitch AL of the second electrode serials 22 in the first direction L is also equal to the arrangement pitch AL of the adjacent first electrodes 24 in the first direction L. The arrangement pitch AW of the first electrode serials 20 in the second direction W is also equivalent to the arrangement pitch AW of the adjacent second electrodes 26 in the width direction W. In practical operation, each first electrode 24 has the same profile in principle, and the dimension SW of the first electrode 24 (or the second electrode 26) in the second direction W is a function of the pitch PW, the gap DW between adjacent first electrodes 24 (or second electrodes 26) in the second direction W, and the number of first electrodes 24 (or second electrodes 26) covered by the pitch PW; the dimension SL of the first electrode 24 (or the second electrode 26) in the first direction L is a function of the key pitch PL, the gap DL between adjacent first electrodes 24 (or second electrodes 26) in the length direction L, and the number of first electrodes 24 (or second electrodes 26) covered by the key pitch PL. That is, in this embodiment, the functional relationship of the sizes of the first electrodes 24 (or the second electrodes 26) can also be expressed by the above formula, i.e., W ═ P- (D × N)/N, where P represents the Key pitch (pitch) of the two adjacent Key projection areas 18 (or the two electrode matrices Ma/Mb in fig. 11B) in the first direction W (the distance component or PL from the center of one electrode matrix to the center of the other electrode matrix in the first direction W or the distance component or PL in the second direction L), D represents the electrode gap DW of the two adjacent electrodes (the two first electrodes 24 or the two second electrodes 26, or the first electrodes 24 and the second electrodes 26) in the Key projection areas 18/electrode matrices Ma/Mb in the second direction W or the electrode gap DL in the first direction L, N represents the number of electrode rows NW covered by the Key pitch P in the second direction W or the number of electrode rows covered by the Key pitch NL in the first direction L, w represents a side length of the first electrode 24 in the second direction W. In other words, the length W of the first electrode 24 in the second direction W is equal to the key center distance P minus the multiplier of the number N of electrode rows and the electrode distance D, and divided by the number N of electrode rows and columns. For the electrode matrix Ma/Mb/Mc of fig. 11B, the number of rows and columns of electrodes covered by the electrode matrix/Ma/Mb/Mc in the first direction L is 4, and the number of rows and columns of electrodes covered by the second direction W is 3, which corresponds to the number of 4 rows and columns of electrodes covered by the key center distance PL (NL ═ 4), and the number of 3 rows and columns of electrodes covered by the PW (NW ═ 3). In summary, for the first electrode 24/the second electrode 26 with the same shape (e.g. rectangle/diamond) size (e.g. rectangle side length or diamond diagonal length), the size of the first electrode 24 in the second direction W/the size of the second electrode 26 in the first direction L can be analogized according to the above formula.

In this embodiment, the two electrodes connected by the straight connecting fingers of the electrodes are in opposite positions of intersecting or crossing, and the central connecting line of the two electrodes connected straight is straight and parallel to the second direction W or the first direction L. In this embodiment, the first electrodes 24 and the second electrodes 26 are diamond-shaped, which increases the area utilization rate of the electrode distribution, and also increases the degree of the mutual intersection between the first electrodes 24 and the second electrodes 26, both of which are helpful to improve the sensing accuracy of the touch position.

Furthermore, corresponding to the arrangement of the light source circuit 30, the first electrode 24 and the second electrode 26 are preferably in a hollow diamond shape, that is, the first electrode 24 surrounds and forms the first electrode light-transmitting portion 24a, and the second electrode 26 surrounds and forms the second electrode light-transmitting portion 26 a. The plurality of light sources 31 of the light source circuit 50 are preferably disposed in the first electrode transparent portion 24a or the second electrode transparent portion 26a, but not limited thereto. In other embodiments (not shown), the first electrode 24 and the second electrode 26 may have a solid diamond shape, and only the corresponding electrode (e.g. the second electrode 26) corresponding to the position where the light source 31 is disposed adopts a hollow diamond shape design or an electrode design with a notch, so as to form a region (e.g. the second electrode light-transmitting portion 26a) for disposing the light source 31. For example, as shown in fig. 12C and 12D, the light source lines 32 of the light source circuit 30 may extend along the first direction L and be disposed between the corresponding adjacent first electrode serials 20 at intervals in the second direction W, and the light source 31 may be disposed in the second electrode light-transmitting portion 26a surrounded by one of the second electrodes 26. Thereby, the light emitted from the light source 31 can be emitted from the corresponding key cap 13.

In an embodiment, the plurality of first electrode serials 20 shown in fig. 12A and the plurality of light source lines 32 shown in fig. 12C may be integrated into a same-layer circuit design as shown in fig. 12D, and the combination of the plurality of first electrode serials 20 and the light source lines 32 shown in fig. 12D and the plurality of second electrode serials 22 shown in fig. 12B may be integrated on the same surface of the same substrate in a manner similar to that shown in fig. 5A and triggered by the conductive portion of the key component outside the composite electrode module of the keyboard as the conductive connection portion; or may be integrated on the same surface of the same substrate (e.g., the first substrate 142 ') in a manner similar to that shown in fig. 7A to 7C and triggered by a conductive connection (e.g., the conductive connection 146C) disposed on the second substrate 146 ' through the opening 144C of the spacer layer 144 '. In other words, in the schematic diagram of the correspondence relationship between the electrode layout and the conductive connection portion corresponding to a single key as shown in fig. 13, when the composite electrode module for a keyboard is formed in the configuration (1), the conductive connection portion (e.g., the conductive connection portion 19) is the conductive portion disposed on the key member 16, and when the composite electrode module for a keyboard is formed in the configuration (2), the conductive connection portion (e.g., the conductive connection portion 146c) is formed on another substrate (e.g., the second substrate 146'). In addition, by changing the design of the first trigger conductive part 202 and the second trigger conductive part 222, the combination of the plurality of first electrode serials 20 and the light source lines 32 similar to that shown in fig. 12D and the plurality of second electrode serials 22 similar to that shown in fig. 12B can be respectively disposed on different substrates of the electrode carrying structure in a manner (3) similar to that shown in fig. 9A to 9C, and trigger by contacting each other through the openings 144C of the spacer layer 144', and details of the above-mentioned configurations (1), (2), and (3) can refer to the related description of the foregoing embodiments, and are not repeated herein.

In the above embodiments, the plurality of first electrode serials 20 and the plurality of light source circuits 30 may be integrated into a circuit design formed on the same surface of the same substrate or formed on different surfaces of different substrates, but the invention is not limited thereto. In other embodiments (not shown), the touch sensing circuit 40 (i.e., the plurality of first electrode serials 20 and the plurality of second electrode serials 22) and the light source circuit 30 may be disposed on opposite surfaces of a substrate, respectively. For example, the touch sensing circuit 40 (e.g., the first electrode serials 20 and the second electrode serials 22) is located on the upper surface of the substrate, and the light source circuit 30 can be located on the lower surface of the substrate, and by means of the hollow electrode design, the light provided by the light source 31 can be transmitted from the light-transmitting portion of the electrode (e.g., 24a, 26a or the substrate where the electrode is not disposed) and emitted toward the keycap 13.

In the above embodiments, the keyboard composite electrode module of the present invention includes a plurality of electrode matrixes M and a light source circuit 50. The plurality of electrode matrices M are continuously arranged in the first direction L and the second direction W, two electrode matrices (e.g., Ma, Mb) adjacent in the second direction W are offset from each other in the first direction L without being aligned in the second direction W, and at least two electrode matrices (e.g., Ma, Mb) that are not aligned in the second direction W are identical to each other. Each electrode matrix M includes a plurality of first electrode serial sections (e.g., 20a to 20c, 20d to 20f, and 20g to 20i) and a plurality of second electrode serial sections (e.g., 22a to 22d, 22e to 22h, and 22i to 22l) arranged to be staggered with the first electrode serial sections. The light source circuit 30 includes a plurality of light source lines 32 and a plurality of light sources 31, the plurality of light sources 31 are electrically connected to the corresponding light source lines 32, wherein the plurality of light sources 31 are disposed in the plurality of electrode matrices M one-to-one, and the relative positions of each light source 31 in the corresponding electrode matrix M are the same. Therefore, even under the condition of integrating the light source circuit (and the switch circuit), the light-emitting touch keyboard and the keyboard composite electrode module thereof still enable each key projection area to cover the same electrode pattern containing the light source, thereby reducing the complexity of electrode layout design, improving the regularity of electrode induction performance and further improving the touch operation accuracy of the touch keyboard. In one embodiment, the touch keyboard 10 can control or sense the electrical state of the keyboard composite electrode module 14 through the control module. The control module can include a keyboard processing unit and a sensing processing unit. The keyboard processing unit is electrically connected to the switch circuits (e.g., the first trigger conductive part and the second trigger conductive part) of the keyboard composite electrode module 14 to sense the states of the key switches. The sensing processing unit is electrically connected to the touch sensing circuit of the keyboard composite electrode module 14 to sense the capacitance of the electrode. The control module outputs the sensing result through the connection interface, such as outputting the alphanumeric input corresponding to the key structure or the touch position in the touch area 120.

In summary, the light-emitting touch keyboard and the keyboard composite electrode module thereof integrate the touch sensing circuit and the light source circuit into the same electrode module, thereby not only improving the operability and functionality of the keyboard, but also being more beneficial to the thinning of the keyboard. Moreover, even under the condition of integrating the light source circuit, the light-emitting touch keyboard and the keyboard composite electrode module thereof still enable each key projection area to cover the same electrode pattern containing the light source, thereby reducing the complexity of electrode layout design, improving the regularity of electrode induction performance and further improving the touch operation accuracy of the touch keyboard. In addition, through a single-layer integrated design that the electrode serial of touch sensing (used for sensing the non-pressing movement on the key to generate a touch signal), the trigger electrode (used for generating a character signal through the mechanical displacement contact conduction of the key) and the light source circuit (used for providing a light-emitting effect of light emitted from the keycap) are simultaneously formed on the keyboard composite electrode module, the thickness of the circuit layer of the light-emitting touch keyboard is further effectively reduced, and the thin design of the light-emitting touch keyboard is facilitated.

The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the present invention.