阅读说明：本技术 柔性扁平电缆和显示装置 (Flexible flat cable and display device ) 是由 李辉 袁海江 于 2021-07-30 设计创作，主要内容包括：本申请公开了一种柔性扁平电缆和显示装置,所述柔性扁平电缆包括柔性基板、多条信号线和绑定部,多条所述信号线设置在所述柔性基板上；所述绑定部设置在所述柔性基板的边缘,所述绑定部设置有多个绑定端子,多个所述绑定端子与多条所述信号线一一对应连通。本申请,通过以上方式无需连接器,就能实现柔性扁平电缆与外部器件的连接,缩小柔性扁平电缆与外部器件之间的占位空间。(The application discloses a flexible flat cable and a display device, wherein the flexible flat cable comprises a flexible substrate, a plurality of signal wires and a binding part, wherein the plurality of signal wires are arranged on the flexible substrate; the department of binding sets up the edge of flexible substrate, it is provided with a plurality of terminals of binding, and is a plurality of bind the terminal with many the signal line one-to-one communicates. This application need not the connector through above mode, just can realize being connected of flexible flat cable and external device, reduces the occupation space between flexible flat cable and the external device.)

1. A flexible flat cable comprising a flexible substrate and a plurality of signal lines, the plurality of signal lines being provided on the flexible substrate, characterized in that the flexible flat cable further comprises:

binding portion sets up the edge of flexible substrate, binding portion is provided with a plurality of terminals of binding, and is a plurality of bind the terminal with many the signal line one-to-one intercommunication.

2. The flexible flat cable according to claim 1, wherein said binding terminal includes a plurality of pins, said plurality of pins are arranged in a line, and each of said plurality of pins extends in an orientation from an end of said binding portion adjacent to said plurality of signal lines to an end of said binding portion away from said plurality of signal lines.

3. The flexible flat cable according to claim 1, further comprising a second binding portion and a plurality of second signal lines, wherein the second binding portion is disposed at an edge of the flexible substrate, and the second binding portion and the binding portion are arranged at an included angle, the second binding portion is provided with a plurality of second binding terminals, and the plurality of second binding terminals are in one-to-one correspondence communication with the plurality of second signal lines.

4. The flexible flat cable according to claim 3, wherein the second binding portion is disposed perpendicularly to a side adjacent to the binding portion.

5. The flexible flat cable according to claim 1, wherein a plurality of fan-out traces are further disposed on the flexible substrate, one end of each of the plurality of fan-out traces is in one-to-one correspondence with the plurality of signal lines, and the other end of each of the plurality of fan-out traces is in one-to-one correspondence with the plurality of binding terminals;

the width of binding portion is less than many the width of signal line, many the interval between the fan-out line is followed many the signal line is close to the one end of binding portion, to binding portion reduces gradually.

6. The flexible flat cable of claim 5, wherein a width of a plurality of said fan-out traces decreases from an end proximate a plurality of said signal lines to an end proximate said binding.

7. A display device comprising the flexible flat cable according to any one of claims 1 to 6 and a display panel, wherein the flexible flat cable is bound and connected to the display panel by the binding portion.

8. The display device according to claim 7, further comprising a flexible printed circuit board including:

a flexible substrate;

the copper-clad plate is arranged on the flexible base material;

the connecting part is arranged at the edge of the flexible substrate and provided with a plurality of connecting terminals, the connecting terminals are all electrically connected with the copper-clad plate, and the connecting terminals are used for being bound and connected with the binding part; and

and the protective layer is arranged on one surface of the copper-clad plate, which is far away from the flexible base material, and covers the copper-clad plate.

9. The display device according to claim 7, wherein the connection terminal is a connection pin formed by electrodeposition of the copper-clad plate.

10. The display device according to claim 8, further comprising a printed circuit board on which a plurality of golden finger terminals are disposed, the plurality of golden finger terminals being in binding connection with the binding portion and/or the connecting portion.

Technical Field

The application relates to the technical field of display, in particular to a flexible flat cable and a display device.

Background

With the widespread use of display devices, the production of display devices is of particular importance, and in the production process of display devices, the display panel of the display device is connected with the printed circuit board or the time schedule controller by adopting a chip on film, and the printed circuit board is connected with the printed circuit board, or the connection between the printed circuit board and the timing controller, typically using a flexible flat cable or flexible printed circuit board for communication, however, the conventional flexible flat cable and the flexible printed circuit board cannot be directly connected to the printed circuit board, the timing controller or other devices, and the connection of the flexible flat cable and the flexible printed circuit board is generally realized through a connector, however, when the connector is connected to other devices, the width of the connector is generally larger than the width of the connection end of the flexible flat cable and the flexible printed circuit board, which increases the space occupied by the flexible flat cable and the flexible printed circuit board on other devices.

Disclosure of Invention

The application aims at providing a flexible flat cable and a display device, need not to adopt the connector, just can realize being connected of flexible flat cable and external device, reduces the occupation space between flexible flat cable and the external device.

The application discloses a flexible flat cable, which comprises a flexible substrate, a plurality of signal wires and a binding part, wherein the signal wires are arranged on the flexible substrate; the department of binding sets up the edge of flexible substrate, it is provided with a plurality of terminals of binding, and is a plurality of bind the terminal with many the signal line one-to-one communicates.

Optionally, it includes the pin to bind the terminal, the pin has a plurality ofly, and is a plurality of the pin is a style of calligraphy and arranges, and is a plurality of the orientation of pin is all followed binding portion is close to many the one end of signal line to binding portion keeps away from many the one end of signal line extends.

Optionally, the flexible flat cable still includes second binding portion and many second signal lines, the second binding portion sets up the edge of flexible substrate, just the second binding portion with binding portion is the contained angle and arranges, the second binding portion is provided with a plurality of seconds and binds the terminal, and is a plurality of the terminal is bound with many to the second signal line one-to-one intercommunication.

Optionally, the second binding portion and the side adjacent to the binding portion are vertically arranged.

Optionally, a plurality of fan-out wires are further arranged on the flexible substrate, one ends of the plurality of fan-out wires are in one-to-one correspondence with the plurality of signal lines, and the other ends of the plurality of fan-out wires are in one-to-one correspondence with the plurality of binding terminals;

the width of binding portion is less than many the width of signal line, many the interval between the fan-out line is followed many signal line one end is to the one end of binding portion reduces gradually.

Optionally, the width of the plurality of fan-out traces gradually decreases from one end near the plurality of signal lines to one end near the binding portion.

The application also discloses a display device, display device includes the arbitrary one of this application discloses flexible flat cable and display panel, flexible flat cable passes through binding portion with display panel binds the connection.

Optionally, the display device further comprises a flexible printed circuit board, wherein the flexible printed circuit board comprises a flexible base material, a copper-clad plate, a connecting part and a protective layer; the copper-clad plate is arranged on the flexible base material; the connecting part is arranged at the edge of the flexible substrate and provided with a plurality of connecting terminals, the connecting terminals are all electrically connected with the copper-clad plate, and the connecting terminals are used for being bound and connected with the binding part; the protective layer is arranged on one surface, far away from the flexible base material, of the copper-clad plate and covers the copper-clad plate.

Optionally, the connecting terminal is a connecting pin formed by electrical deposition of the copper-clad plate.

Optionally, the display device further includes a printed circuit board, a plurality of golden finger terminals are arranged on the printed circuit board, and the golden finger terminals are connected with the binding portion and/or the connecting portion in a binding manner.

Compared with the scheme that the flexible flat cable can be connected with other devices only by the connector, and the occupation space of the flexible flat cable on other devices is increased, the flexible flat cable is provided with the binding part, can be directly bound and connected with the display panel, the printed circuit board or the flexible printed circuit board with the binding structure, does not need to be additionally provided with an independent connector, and saves the production cost; meanwhile, the flexible flat cable can be bound and connected in a structural design, the structure is simple, the occupied space between the flexible flat cable and other components is reduced, the electronic circuit drawing layout is optimized, and when the flexible flat cable is used for connecting two or more components, the flexible flat cable without the connector is better in flexibility, so that the distance between the adjacent components is smaller, and the space is saved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the application, are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

FIG. 1 is a schematic diagram of a first embodiment of a display device of the present application;

FIG. 2 is an exploded view of area A of FIG. 1;

FIG. 3 is a schematic view of a first embodiment of the flexible flat cable of the present application;

FIG. 4 is a schematic view of an embodiment of a flexible printed circuit board of the present application;

FIG. 5 is an exploded view of region B of FIG. 1;

fig. 6 is a schematic view of a second embodiment of the flexible flat cable of the present application;

FIG. 7 is a schematic view of a second embodiment of a display device of the present application;

fig. 8 is a schematic view of a third embodiment of the flexible flat cable of the present application;

fig. 9 is a schematic diagram of a third embodiment of the display device of the present application.

100, a display device; 200. a display panel; 210. a chip on film; 300. a flexible flat cable; 310. a flexible substrate; 320. a signal line; 321. a second signal line; 330. a binding section; 331. binding the terminal; 340. a second binding section; 341. a second binding terminal; 350. fan-out routing; 360. positioning holes; 400. a flexible printed circuit board; 410. a flexible substrate; 420. copper-clad plate; 430. a connecting portion; 431. a connection terminal; 440. a protective layer; 500. a printed circuit board; 510. a gold finger terminal; 520. a second gold finger terminal; 530. a source drive signal circuit board; 540. a control signal circuit board; 550. and a positioning column.

Detailed Description

It is to be understood that the terminology, the specific structural and functional details disclosed herein are for the purpose of describing particular embodiments only, and are representative, but that the present application may be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.

In the description of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or as implicitly indicating the number of technical features indicated. Thus, unless otherwise specified, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; "plurality" means two or more. The terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that one or more other features, integers, steps, operations, elements, components, and/or combinations thereof may be present or added.

Further, terms of orientation or positional relationship indicated by "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, are described based on the orientation or relative positional relationship shown in the drawings, are simply for convenience of description of the present application, and do not indicate that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application.

Furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, fixed connections, removable connections, and integral connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through both elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

The present application is described in detail below with reference to the figures and alternative embodiments.

Fig. 1 is a schematic view of a first embodiment of a display device of the present application, and fig. 2 is an exploded schematic view of an area a in fig. 1. referring to fig. 1 and 2, the present application discloses a display device 100 including a flexible flat cable 300 and a display panel 200, wherein the flexible flat cable 300 is connected to the display panel 200 through the binding portion 330. In this embodiment, the display device 100 may be a binding portion 330 that is through adopting one end of the flexible flat cable 300, and is bound with the routing in the corresponding glass end of the display panel 200, so as to realize the binding connection between the flexible flat cable 300 and the display panel 200, and the binding portion 330 at the other end of the flexible flat cable 300 is connected to other devices in the display device 100, such as a source circuit board, a gate circuit board, etc., and meanwhile, the flexibility of the flexible flat cable 300 itself can also be utilized, so as to bend and fix other devices to the back of the display panel 200, which is beneficial to the realization of the narrow frame of the display device 100.

Fig. 3 is a schematic view of a first embodiment of a flexible flat cable according to the present application, and referring to fig. 3, the flexible flat cable 300 includes a flexible substrate 310, a plurality of signal lines 320 and a bonding portion 330, wherein the plurality of signal lines 320 are disposed on the flexible substrate 310; the binding part 330 is disposed at an edge of the flexible substrate 310, the binding part 330 is provided with a plurality of binding terminals 331, and the plurality of binding terminals 331 are in one-to-one correspondence with the plurality of signal lines 320.

Compared with the scheme that the flexible flat cable 300 needs a connector to be connected with other devices and the occupied space of the flexible flat cable 300 on other devices is increased, the flexible flat cable 300 is provided with the binding part 330, and can be directly bound and connected with the display panel 200, the printed circuit board 500 or the flexible printed circuit board 400 with the binding structure, so that an independent connector is not needed to be added, and the production cost is saved; meanwhile, the flexible flat cable 300 can be bound and connected in a structural design, the structure is simple, the occupied space between the flexible flat cable 300 and other components is reduced, the electronic circuit drawing layout is optimized, and when the flexible flat cable 300 is used for connecting two or more components, the flexible flat cable 300 without a connector is better in flexibility, so that the distance between the adjacent components is smaller, and the space is saved.

In this embodiment, the binding portion 330 is mainly used for binding and connecting components in the display device, specifically, the binding connection is realized by a plurality of binding terminals 331 formed in the binding portion 330, and the binding connection method may be a method of thermocompression bonding by using a conductive adhesive at a high temperature, a method of adding solder to the binding portion 330 of the flexible flat cable 300 for welding, or other methods. The components of the display device 100 may include, for example, a timing controller, a voltage signal circuit board, a source driving signal circuit board, a gate driving signal circuit board, and the like, and the binding connection may be implemented as long as the components have corresponding binding structures.

In an alternative embodiment, the binding terminal 331 includes a plurality of pins, the plurality of pins are arranged in a straight line, the orientation of the plurality of pins is extended from one end of the binding portion 330, which is close to the plurality of signal lines 320, to one end of the binding portion 330, which is far away from the plurality of signal lines 320, the pins can be wires led out from the end of the plurality of signal lines 320 towards the binding portion 330, and then the plurality of signal lines 320 form a plurality of pins, the orientation of the pins is set to be the same, and the plurality of pins are arranged in parallel at a certain distance, on one hand, when the flexible flat cable 300 is used for electrical signal transmission, each signal line 320 of the plurality of signal lines 320 is connected with one pin for transmitting a signal, and when data is transmitted, because a certain distance is set between the plurality of pins, the problem of signal interference caused by too close distance between the plurality of pins is avoided, or short circuit phenomenon due to adjacent pin contact; meanwhile, the distance between two adjacent pins is set to be the same, so that the electronic wiring process of the flexible flat cable 300 can be simplified, and even the electronic circuit drawing layout can be simplified.

In the actual use process of the flexible flat cable 300, pins are usually formed at two ends of the plurality of signal lines 320, so that the binding connection of two components can be realized, and certainly, pins can also be formed at one ends of the plurality of signal lines 320, so that the flexible flat cable 300 can be a connecting line directly formed inside the components and is bound and connected with another component through the formed pins. Of course, the binding terminal 331 may also be other components that can be used for binding connection, such as a gold finger, a pin, etc., and is not limited to only being a pin, as long as the binding terminal 331 can communicate with the plurality of signal lines 320 to realize signal transmission.

In addition, in order to prevent the flexible flat cable 300 from falling off from two sides of the edge of the binding part 330 when being bound and connected with the display panel 200 or other components, two empty pins are arranged on the binding part 330 of the flexible flat cable 300 in parallel with two sides of the plurality of pins, when the flexible flat cable 300 is bound and connected, the two empty pins and other components are not communicated with each other by electric signals, in order to prevent the flexible flat cable 300 from falling off from two sides of the edge of the binding part 330 when the flexible flat cable 300 is used, the normal use of the flexible flat cable 300 is still not affected, and the binding performance of the flexible flat cable 300 is improved.

Generally, the flexible flat cable 300 further includes an insulating layer (not shown in the figure), the insulating layer is disposed on one side of the plurality of signal lines 320 far away from the flexible substrate 310, and covers the plurality of signal lines 320, so as to prevent the plurality of signal lines 320 from being interfered by external signals, the insulating layer can be disposed in the region covering the plurality of signal lines 320, and also can be disposed to cover the whole flexible flat cable 300, and the hollow portion is disposed at the corresponding binding portion 330 of the insulating layer or a avoiding notch is disposed in the hollow portion, so as to ensure that the binding portion 330 can be normally bound.

Of course, the insulating layer may be disposed on more than one side, and the insulating layer may be disposed on both sides of the flexible flat cable 300 to enhance the effect of preventing the signal interference of the flexible flat cable 300, or the flexible substrate 310 may be formed of any suitable insulating material having flexibility, for example, the flexible substrate 310 may be formed of a polymer material such as Polyimide (PI), Polycarbonate (PC), Polyethersulfone (PES), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), Polyarylate (PAR), or glass Fiber Reinforced Plastic (FRP), and the effect of preventing the signal lines 320 from being interfered by external signals may also be achieved.

In addition, in order to prevent signal interference of the flexible flat cable 300, a shielding material, a conductive tape, or the like may be applied on the flexible flat cable 300 in addition to providing an insulating layer on the flexible flat cable 300. Meanwhile, in order to prevent the flexible flat cable 300 from signal attenuation during signal transmission, the line widths of the plurality of signal lines 320 may be designed accordingly.

Fig. 4 is a schematic diagram of an embodiment of a flexible printed circuit board of the present application, and referring to fig. 4, as can be seen from fig. 1 to fig. 3, the display device 100 further includes a flexible printed circuit board 400, one end of the flexible flat cable 300 is bound and connected with the display panel 200, and the other end is bound and connected with the flexible printed circuit board 400, where the flexible printed circuit board 400 includes a flexible substrate 410, a copper-clad plate 420, a connecting portion 430, and a protective layer 440; the copper-clad plate 420 is arranged on the flexible base material 410; the connecting part 430 is arranged at the edge of the flexible substrate 410, the connecting part 430 is provided with a plurality of connecting terminals 431, the connecting terminals 431 are electrically connected with the copper-clad plate 420, and the connecting terminals 431 are used for being bound and connected with the binding part 330; the protective layer 440 is disposed on a surface of the copper-clad plate 420 away from the flexible substrate 410, and covers the copper-clad plate 420.

In the display device 100, the flexible printed circuit board 400 is usually in a chemical etching manner, the copper-clad plate 420 is processed to obtain a flexible circuit board with a single-sided, double-sided and multi-layer structure, the flexible circuit board is different in line running type, and is mainly used for connecting the display panel 200 with the driving circuit printed circuit board in the display device 100, a plurality of connecting terminals 431 are arranged on the copper-clad plate 420, the connecting terminals 431 form a connecting part 430, the connecting part 430 can be directly bound and connected with the binding part 330 of the flexible flat cable 300, so that the display panel 200, the flexible flat cable 300 and the flexible printed circuit board 400 are connected, and signal conduction among the three is realized.

Specifically, in practical applications, the number of the binding terminals 331 on the flexible flat cable 300 and the number of the connection terminals 431 on the flexible printed circuit board 400 may be set to be the same, so that when the flexible flat cable 300 is bound to the flexible printed circuit board 400, the plurality of binding terminals 331 and the plurality of connection terminals 431 are in one-to-one correspondence. Of course, in order to prevent the flexible flat cable 300 and the flexible printed circuit board 400 from being bound and falling off and affecting normal use, empty pins may be respectively disposed on two sides of the binding terminal 331 and the connection terminal 431, so as to improve the binding effect.

In this embodiment, the connection terminal 431 is a connection pin formed by electrical deposition of the copper-clad plate 420, the connection pin and the copper-clad plate 420 can be formed in the same process, so as to further simplify the manufacturing process of the flexible printed circuit board 400, and the arrangement of the connection pin can refer to the description of the pin in the flexible flat cable 300, which is not repeated herein. Of course, the connection terminal 431 may also be a pin or a pin, and the pin or the pin may be used for signal transmission by communicating the pins or the pin copper clad laminates.

Fig. 5 is an exploded view of a region B in fig. 1, and as can be seen from fig. 5 in conjunction with fig. 1, the display device 100 further includes a printed circuit board 500, a plurality of gold finger terminals 510 are disposed on the printed circuit board 500, and the plurality of gold finger terminals 510 are connected to the binding portion 330 or the connecting portion 430 in a binding manner. In this embodiment, one end of the flexible flat cable 300 is connected to the display panel 200, and the other end is connected to the printed circuit board 500, so that the display panel 200 and the printed circuit board 500 can be connected without a connector, and the printed circuit board 500 can be bent to the back of the display panel by using the flexibility of the flexible flat cable 300. Of course, the flexible printed circuit board 400 may be used to perform a binding connection between the display panel 200 and the printed circuit board 500.

In an actual connection process, the number of the golden finger terminals 510 on the printed circuit board 500 is generally the same as the number of the binding terminals 331 of the flexible flat cable 300, however, the number of the golden finger terminals 510 on different printed circuit boards 500 may be different, and there are more golden finger terminals 510 and less golden finger terminals, in order to improve the compatibility of the flexible flat cable 300, the number of the binding terminals 331 on the flexible flat cable 300 is set to be greater than the number of the golden finger terminals 510 on the printed circuit board 500, for example, the printed circuit board 500 with 96 golden finger terminals 510 and the printed circuit board 500 with 68 golden finger terminals 510, the number of the binding terminals 331 on the flexible flat cable 300 is set to be 96, so that if i use the printed circuit board 500 with 96 golden finger terminals 510, all the 96 binding terminals 331 are used; if the printed circuit board 500 with 68 golden finger terminals 510 is used, 68 binding terminals 331 are used, and the other binding terminals 331 are not connected, so that the flexible flat cable 300 can be used for binding connection of the printed circuit board 500 with 96 golden finger terminals 510 and can also be used for binding connection of the printed circuit board 500 with 68 golden finger terminals 510, and the compatibility is stronger.

Fig. 6 is a schematic diagram of a second embodiment of the flexible flat cable according to the present application, and referring to fig. 6, in order to improve the compatibility of the flexible flat cable 300, a plurality of fan-out traces 351 are further disposed on the flexible substrate 310, one end of each of the plurality of fan-out traces 351 is in one-to-one communication with the plurality of signal lines 320, and the other end is in one-to-one communication with the plurality of binding terminals 331; the width of the binding part 330 is smaller than the width of the plurality of signal lines 320, and the pitch between the plurality of fan-out traces 351 is gradually reduced from one end of the plurality of signal lines 320 to one end of the binding part 330.

Generally, the flexible flat cable 300 plays a role in electrical signal transmission, and the widths of the plurality of signal lines 320 can be set according to actual use requirements, however, the flexible flat cable 300 of the present application is bound and connected with other components through the binding portion 330, and in order to achieve compatibility of the flexible flat cable 300, the flexible flat cable can be applied to connection between various types of components, for example, the widths of different types of components are different, the width of the binding portion 330 is large, and only can be used for binding and connecting with components having the same width as or larger than the width of the binding portion 330, and cannot be used for binding and connecting with components having a width smaller than the width of the binding portion 330, when the binding portion 330 is used for binding and connecting with components having a smaller width, the binding portion 330 may be partially suspended, or the binding portion 330 is bent to cause a wire breakage problem.

Therefore, in order to improve the compatibility of the flexible flat cable 300 and ensure the signal transmission of the flexible flat cable 300, the width of the binding part 330 is designed to be smaller than the width of the plurality of signal lines 320, a plurality of fan-out wires 351 are connected between the plurality of signal lines 320 and the binding terminal 331, the distance between the plurality of fan-out wires 351 is gradually reduced from one end of the plurality of signal lines 320 to one end of the binding part 330, the plurality of signal lines 320 are bound to the binding part 330 through the plurality of fan-out wires 351, and thus the width of the binding part 330 is further reduced, and the compatibility is stronger. Moreover, the width of the binding portion 330 is smaller, and when the binding portion 330 is connected to the gold finger terminal 510 on the printed circuit board 500, the occupied space of the gold finger terminal 510 on the printed circuit board 500 can be made smaller, so as to further optimize the electronic circuit drawing layout of the printed circuit board 500.

In this embodiment, the width of the fan-out traces 351 is gradually reduced from one end close to the signal lines 320 to one end close to the binding portion 330, the width formed by the fan-out traces 351 connected between the signal lines 320 and the binding terminals 331 is set to be gradually reduced from one end close to the signal lines 320 to one end close to the binding portion 330, the signal lines 320 are bound to the binding portion 330, and on the other hand, the width of the fan-out traces 351 is gradually reduced.

In the display device 100, the pcb 500 includes a voltage signal circuit board, a source driving signal circuit board 530, a gate driving signal circuit board, a control signal circuit board 540, and the like, and in the embodiment of the present application, the pcb 500 includes the source driving signal circuit board 530 and the control signal circuit board 540 as an example, the source driving signal circuit board 530 and the control signal circuit board 540 are disposed side by side and are both disposed below the display panel 200, and the source driving signal circuit board 530 and the display panel 200, the control signal circuit board 540 and the display panel 200, and the source driving signal circuit board 530 and the control signal circuit board 540 are connected by using the flexible flat cable 300 and/or the flexible pcb 400, so as to implement signal transmission.

Fig. 7 is a schematic diagram of a second embodiment of the display device of the present application, and as can be seen from fig. 7, the source driving signal circuit board 530 and the control signal circuit board 540 are provided with gold finger terminals 510 near the upper side of the display panel 200, the gold finger terminals 510 can be used for being bound and connected with the plurality of binding terminals 331 of the flexible flat cables 300, by providing routing lines in the glass ends of the corresponding source driving signal circuit board 530 and the control signal circuit board 540 on the display panel 200, two flexible flat cables 300 are adopted, one end of one of the flexible flat cables 300 is bound and connected to the glass end routing line on the corresponding source driving signal circuit board 530, and the other end is bound and connected to the gold finger terminal 510 on the upper side of the source driving signal circuit board 530; one end of the other flexible flat cable 300 is bound and connected to the glass end trace on the corresponding control signal circuit board 540, and the other end is bound and connected to the golden finger terminal 510 on the upper side of the control signal circuit board 540, so that the source driving signal circuit board 530, the control signal circuit board 540 and the display panel 200 are communicated with each other through electric signals.

In addition, when the wires are routed in the glass of the display panel 200, the length of the wires can be set according to the distance between the gold finger terminals 510 on the source driving signal circuit board 530 and the control signal circuit board 540, the wire terminals to be bound at the corresponding positions of the glass ends can be pulled out to be bound with the binding terminals 331, and the applicability is stronger.

Specifically, when the electronic circuit is wired, relevant signals, such as voltages, gate driving signals or other signals, on the source driving signal circuit board 530 and the control signal circuit board 540 may be connected to the gold finger terminals 510 on the source driving signal circuit board 530 and the control signal circuit board 540, so that various signals may be transmitted through the gold finger terminals 510. Meanwhile, when the electronic circuit is drawn and laid out, the setting positions and the number of the gold finger terminals 510 on the source driving signal circuit board 530 or the control signal circuit board 540 can be set according to actual requirements, for example, when the electronic circuit is drawn and laid out, which gold finger terminals 510 on the source driving signal circuit board 530 or the control signal circuit board 540 are used for being connected with other components can be considered, when a board washing process of manufacturing the source driving signal circuit board 530 or the control signal circuit board 540 is performed, the gold finger terminals 510 are directly manufactured according to a drawing and laying-out drawing picture of the electronic circuit, the space of the circuit board is reasonably used, and the electronic circuit drawing and laying-out is optimized.

In addition, the source driving signal circuit board 530 and the display panel 200, and the control signal circuit board 540 and the display panel 200 may be respectively bound and connected by the flip chip 210, and the source driving signal circuit board 530 and the control signal circuit board 540 are bound and connected by the flexible flat cable 300, so as to realize the connection among the source driving signal circuit board 530, the control signal circuit board 540 and the display panel 200. In this embodiment, the gold finger terminals 510 are respectively and correspondingly disposed on the adjacent sides of the source driving signal circuit board 530 and the control signal circuit board 540, and the source driving signal circuit board 530 and the control signal circuit board 540 are in signal communication by the flexible flat cable 300 having the binding terminals 331 at both ends, and the number of the binding terminals 331 is the same as that of the gold finger terminals 510, and the binding terminals 331 and the gold finger terminals 510 are in one-to-one binding connection; the upper sides of the source driving signal circuit board 530 and the control signal circuit board 540 are respectively communicated with the display panel 200 through the chip on film 210, so that the source driving signal circuit board 530, the control signal circuit board 540 and the display panel 200 are connected.

Fig. 8 is a schematic diagram of a third embodiment of a flexible flat cable according to the present application, fig. 9 is a schematic diagram of a third embodiment of a display device according to the present application, and it can be seen from fig. 8 and 9 that, when the flexible flat cable 300 is used to connect a source driving signal circuit board 530 and a control signal circuit board 540, and is connected to a corner of adjacent sides of the source driving signal circuit board 530 and the control signal circuit board 540, in order to prevent a situation of falling-off between the source driving signal circuit board 530 and the control signal circuit board 540, the flexible flat cable 300 according to the second embodiment of the present application is further improved, the flexible flat cable 300 further includes a second binding portion 340 and a plurality of second signal lines 321, the second binding portion 340 is disposed at an edge of the flexible substrate 310, and the second binding portion 340 is arranged at an angle to the binding portion 330, the second binding portion 340 is provided with a plurality of second binding terminals 341, the plurality of second binding terminals 341 are in one-to-one correspondence with the plurality of second signal lines 321.

In this embodiment, through add second binding portion 340 on flexible flat cable 300 and improve the effect of binding, it sets up to be certain contained angle with second binding portion 340 to bind portion 330, prevents that flexible flat cable 300 from appearing the phenomenon of droing from specific one side, when binding portion 330 department drops from other components and parts, second binding portion 340 still binds with other components and parts and links together, guarantees that the connection between flexible flat cable 300 and other components and parts is normal.

Specifically, the side of the second binding part 340 adjacent to the binding part 330 is vertically disposed, the side of the binding part 330 adjacent to the second binding part 340 is disposed at 90 °, accordingly, a plurality of second golden finger terminals 520 are disposed at the sides of the source driving signal circuit board 530 and the control signal circuit board 540 near the display panel 200, the plurality of second golden finger terminals 520 are vertically arranged with the plurality of golden finger terminals 510, and the second golden finger terminals 520 are disposed corresponding to the golden finger terminals 510 and the second binding part 340 with the binding part 330, a plurality of second binding terminals 341 are disposed in the second binding part 340, and the number of the second golden finger terminals 520 and the number of the second binding terminals 341 are the same, when the flexible flat cable 300 is bound and connected to the source driving signal circuit board 530 and the control signal circuit board 540, the plurality of second golden finger terminals 520 and the plurality of second binding terminals 341 are in one-to-one contact, the plurality of gold finger terminals 510 are in one-to-one contact with the plurality of binding terminals 331, so that the binding connection between the source driving signal circuit board 530 and the control signal circuit board 540 is realized, and the binding connection effect is better.

Further, in order to realize the fast binding between the flexible flat cable 300 and the source driving signal circuit board 530 and the control signal circuit board 540, the present application further improves the flexible flat cable 300, a positioning hole 360 may be disposed at a corner of the flexible flat cable 300 where the second binding portion 340 and the binding portion 330 are perpendicular to each other, correspondingly, a positioning column 550 is disposed at a corner of the source driving signal circuit board 530 or the control signal circuit board 540 where the second golden finger terminal 520 and the golden finger terminal 510 are perpendicular to each other, the positioning column 550 and the positioning hole 360 are disposed in one-to-one correspondence, when the positioning column 550 is matched with the positioning hole 360, the plurality of second golden finger terminals 520 contact the plurality of second binding terminals 341 one by one, the plurality of golden finger terminals 510 contact the plurality of binding terminals 331 one by one, and the fast binding can be performed without making redundant positioning marks. In addition, the positioning posts 550 are arranged to reduce the pressure applied to the second binding terminals 341 or the binding terminals 331 when the flexible flat cable 300 is bound and connected, thereby playing a certain role in assisting in fixing.

Specifically, the height of the positioning post 550 can be set to be less than or equal to the thickness of the flexible flat cable 300, and preferably, the height of the positioning post 550 is set to be equal to the thickness of the flexible flat cable 300, so that after the binding connection, the surface of the flexible flat cable 300 has no protruding part of the positioning post 550, and the surface of the flexible flat cable 300 is ensured to be flat while being bound quickly. There may be more than one positioning hole 360, and the positioning holes 360 may be provided at other corners of the second binding portion 340 or the binding portion 330, so that the positioning effect is better.

Certainly, the source driving signal circuit board 530 and the control signal circuit board 540 may also be connected by using the flexible printed circuit board 400, and when the source driving signal circuit board 530 and the control signal circuit board 540 are connected by using the flexible printed circuit board 400, the flexible printed circuit board 400 may also be improved to some extent by providing a second connecting portion, and the second connecting portion is vertically arranged with the side edge of the connecting portion, so as to enhance the connection effect of the flexible printed circuit board 400; the flexible printed circuit board 400 may also be provided with the positioning hole 360, and the position of the positioning hole 360 may refer to the arrangement of the flexible flat cable 300, and the flexible printed circuit board 400 may also be quickly bound, so as to further improve the stability of the display device 100.

In addition, when the source driving signal circuit board 530 and the control signal circuit board 540 are bound and connected by using the flexible flat cable 300 or the flexible printed circuit board 400, a smaller distance between adjacent sides of the source driving signal circuit board 530 and the control signal circuit board 540 can be realized based on the flexibility of the flexible flat cable 300 or the flexible printed circuit board 400, and further, the space between each component in the display device 100 is more compact.

It should be noted that the inventive concept of the present application can form many embodiments, but the present application has a limited space and cannot be listed one by one, so that, on the premise of no conflict, any combination between the above-described embodiments or technical features can form a new embodiment, and after the embodiments or technical features are combined, the original technical effect will be enhanced.

The foregoing is a more detailed description of the present application in connection with specific alternative embodiments, and the specific implementations of the present application are not to be considered limited to these descriptions. For those skilled in the art to which the present application pertains, several simple deductions or substitutions may be made without departing from the concept of the present application, and all should be considered as belonging to the protection scope of the present application.