阅读说明：本技术 显示模组和显示装置 (Display module and display device ) 是由 霍思涛 于 2021-07-30 设计创作，主要内容包括：本发明公开了一种显示模组和显示装置,属于显示技术领域,显示模组包括透光区和发光区,透光区位于相邻两个发光区之间；显示模组包括：多个发光元件,发光元件位于发光区内；多个光路转换结构,位于发光元件背离发光元件出光面的一侧且位于发光区内；光路转换结构可改变第一光线的传播方向,使得第一光线从透光区出射；其中,第一光线包括从第一侧入射至发光区的光线；第一侧指光路转换结构远离发光元件的一侧。显示装置包括上述显示模组。本发明可以提高显示模组背光侧的光线透过率,改善透明显示效果。(The invention discloses a display module and a display device, belonging to the technical field of display, wherein the display module comprises a light-transmitting area and light-emitting areas, and the light-transmitting area is positioned between two adjacent light-emitting areas; the display module assembly includes: a plurality of light emitting elements located within the light emitting region; the light path conversion structures are positioned on one side of the light emitting element, which is deviated from the light emitting surface of the light emitting element, and are positioned in the light emitting area; the light path conversion structure can change the transmission direction of the first light ray, so that the first light ray is emitted from the light-transmitting area; the first light comprises light incident to the light emitting area from the first side; the first side refers to a side of the light path conversion structure away from the light emitting element. The display device comprises the display module. The invention can improve the light transmittance of the backlight side of the display module and improve the transparent display effect.)

1. A display module, comprising: the light-transmitting area is positioned between two adjacent light-emitting areas;

the display module assembly includes:

a plurality of light emitting elements located within the light emitting region;

the light path conversion structures are positioned on one side of the light emitting element, which is deviated from the light emitting surface of the light emitting element, and are positioned in the light emitting area;

the light path conversion structure can change the propagation direction of the first light ray, so that the first light ray is emitted from the light-transmitting area; wherein the first light comprises light incident to the light emitting region from a first side; the first side refers to a side of the light path conversion structure away from the light emitting element.

2. The display module according to claim 1, further comprising a substrate and a control circuit layer, wherein the substrate and the control circuit layer are located on a side of the light emitting element facing the light path conversion structure in a direction perpendicular to a plane of the display module, the control circuit layer is located between the substrate and the light emitting element, and the light emitting element is electrically connected to the control circuit layer.

3. The display module according to claim 2, wherein the optical path conversion structure is disposed between the substrate base plate and the light emitting element in a direction perpendicular to a plane of the display module.

4. The display module according to claim 3, wherein the control circuit layer comprises a first organic layer, and the light path conversion layer and the first organic layer are disposed in the same layer and the same material.

5. The display module according to claim 2, wherein the optical path conversion structure is located on a side of the substrate away from the control circuit layer in a direction perpendicular to a plane of the display module.

6. The display module according to any one of claims 1-5, wherein the light path conversion structure comprises a first surface and a second surface connected to each other, the first surface faces the light emitting element, the second surface is located on a side of the first surface facing away from the light emitting element, the first surface is parallel to a plane where the display module is located, and an included angle between the second surface and the first surface is α, α ≦ 45 °;

the first surface is provided with a total reflection film, and the total reflection film enables the first light ray incident to the first surface from one side of the second surface to be reflected;

the second surface is provided with a semi-reflecting and semi-transmitting film, the semi-reflecting and semi-transmitting film enables the first light ray incident from the first side to penetrate through the semi-reflecting and semi-transmitting film to be incident to the first surface, and the first light ray incident from the first surface side to the second surface is reflected.

7. The display module according to claim 6, wherein the total reflection film reflects light incident on the first surface from the light emitting device side.

8. The display module according to claim 6, wherein the optical path conversion structure further comprises a third surface, the third surface is connected to the first surface and the second surface, respectively, and the third surface is an exit surface of the first light;

the included angle between the third surface and the first surface is beta, and beta is more than or equal to 90 degrees; wherein β is an angle formed by the third surface and the first surface toward the second surface.

9. The display module according to claim 8, wherein the third surface is an arc surface, and the arc surface is formed by the third surface protruding in a direction away from the second surface.

10. The display module according to claim 8, wherein at least two of the light path conversion structures are disposed between two adjacent light-transmissive regions in a direction parallel to a plane of the display module, and the third surfaces of the two light path conversion structures between two adjacent light-transmissive regions face away from each other.

11. The display module according to claim 10, wherein the two light path conversion structures between two adjacent light-transmissive regions are a single structure.

12. The display module of claim 8, wherein the third surface is perpendicular to a plane of the display module.

13. The display module of claim 8,

the plurality of light emitting elements include at least a first light emitting element and a second light emitting element, and the light emitting efficiency of the first light emitting element is greater than that of the second light emitting element;

the plurality of optical path conversion structures at least comprise a first optical path conversion structure and a second optical path conversion structure, in the direction perpendicular to the plane of the display module, the first optical path conversion structure is overlapped with the first light-emitting element, and the second optical path conversion structure is overlapped with the second light-emitting element;

the included angle between the third surface of the first light path conversion structure and the first surface is beta 1, the included angle between the third surface of the second light path conversion structure and the first surface is beta 2, and beta 1 is less than beta 2.

14. The display module according to claim 1, wherein the plurality of optical path conversion structures are connected to each other in a direction parallel to a plane of the display module;

in the direction perpendicular to the plane of the display module, the light path conversion structure is arranged around the light-transmitting area.

15. A display device comprising the display module according to any one of claims 1 to 14.

Technical Field

The invention relates to the technical field of display, in particular to a display module and a display device.

Background

With the increasing demand of people for display technology, transparent display devices have been developed. The transparent display device means that some areas of the display device can display images at the same time, and some areas can allow a user to see a scene on the back of the display device through ambient light, so that a real object and a multimedia image can be perfectly combined together to present a visual picture, display contents have expressive force, real-time interaction can be performed, and an impressive visual effect is brought to the user. The transparent display device can be applied to automobile windows, refrigerator doors, shop windows, vending machines, building windows and the like. However, in the design of the transparent display screen, because the metal wires and the thin film transistors in the display screen are made of opaque materials, the transmittance of the ambient light on the back of the display screen is insufficient, and the transparent display effect of the display screen is affected.

In the prior art, the area of a light-transmitting area is increased as much as possible by the area of pixel circuits and wiring lines such as limit compression metal wiring lines and thin film transistors, so that the transmittance of ambient light on the back of a transparent display screen is improved, and transparent display is better realized. However, it is very difficult to continue to compress the area of the pixel circuit and the wiring complexity; in addition, the method needs to limit the design and the process, so that the processing risk is increased easily, and the equipment yield is damaged; in addition, the PPI (pixel density, which represents the number of Pixels Per Inch of the display) of the display is easily limited because the higher the PPI, the lower the light transmittance, and the larger the area of the pixel circuit and the trace required to be compressed. In this case, it is difficult to further increase the transmittance of the transparent display.

Therefore, it is an urgent need to solve the technical problem of the art to provide a display module and a display device capable of improving light transmittance, improving transparent display effect, and reducing process risk.

Disclosure of Invention

In view of this, the invention provides a display module and a display device, so as to solve the problems that the transmittance of ambient light at the back of a transparent display screen in the prior art cannot be improved well, and the transparent display effect is not ideal.

The invention discloses a display module, comprising: the light-transmitting area is positioned between two adjacent light-emitting areas; the display module assembly includes: a plurality of light emitting elements located within the light emitting region; the light path conversion structures are positioned on one side of the light emitting element, which is deviated from the light emitting surface of the light emitting element, and are positioned in the light emitting area; the light path conversion structure can change the transmission direction of the first light ray, so that the first light ray is emitted from the light-transmitting area; the first light comprises light incident to the light emitting area from the first side; the first side refers to a side of the light path conversion structure away from the light emitting element.

Based on the same invention concept, the invention also discloses a display device which comprises the display module.

Compared with the prior art, the display module and the display device provided by the invention at least realize the following beneficial effects:

the luminous area of the display module provided by the invention can realize picture display through the luminous elements with different luminous colors, the light-transmitting area can transmit ambient light to enable a user to watch a scene at the backlight side (the first side) of the display module, the light path conversion structure is arranged in the luminous area to change the transmission direction of first light rays incident into the luminous area from the first side, the first light rays are emitted from the light-transmitting area after changing the transmission direction, a real object and a multimedia display picture are perfectly combined to present a visual picture, the display content has expressive force, the user is provided with better visual effect, meanwhile, the light transmittance of the display module can be further improved, an image which is possibly shielded by the luminous area (a non-light-transmitting area) at the first side of the display module originally can be seen, and further an object image (or a scene picture at the back of the display module) at the first side of the display module observed by the user can be more comprehensive, and a better transparent display effect is realized. And because the light path conversion structure is arranged in the luminous area of the display module, the light transmittance of the display module can be improved on the basis of not influencing the normal display picture of the display module.

Of course, it is not necessary for any product in which the present invention is practiced to specifically achieve all of the above-described technical effects simultaneously.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a schematic plan view of a display module according to an embodiment of the present invention;

FIG. 2 is a schematic sectional view taken along line A-A' of FIG. 1;

FIG. 3 is a schematic view of another cross-sectional structure taken along line A-A' of FIG. 1;

FIG. 4 is a schematic view of another cross-sectional structure taken along line A-A' of FIG. 1;

FIG. 5 is a schematic view of another cross-sectional structure taken along line A-A' of FIG. 1;

FIG. 6 is a schematic view of another cross-sectional structure taken along line A-A' of FIG. 1;

FIG. 7 is a schematic view of another cross-sectional structure taken along line A-A' of FIG. 1;

FIG. 8 is a schematic optical path transmission diagram of the optical path switching structure of FIG. 7;

FIG. 9 is a schematic diagram of optical path transmission at an angle α of greater than 45 between the first surface and the second surface;

FIG. 10 is a schematic view of an alternative cross-sectional configuration taken along line A-A' of FIG. 1;

fig. 11 is an optical path transmission diagram of the optical path conversion structure in fig. 10;

FIG. 12 is a schematic view of an alternative cross-sectional configuration taken along line A-A' of FIG. 1;

fig. 13 is an optical path transmission diagram of the optical path conversion structure in fig. 12;

FIG. 14 is a schematic view of an alternative cross-sectional configuration taken along line A-A' of FIG. 1;

fig. 15 is an optical path transmission diagram of the optical path conversion structure in fig. 14;

FIG. 16 is a schematic view of an alternative cross-sectional configuration taken along line A-A' of FIG. 1;

FIG. 17 is a schematic view of an alternative cross-sectional configuration taken along line A-A' of FIG. 1;

FIG. 18 is a schematic view of an alternative cross-sectional configuration taken along line A-A' of FIG. 1;

FIG. 19 is a schematic view of a partially enlarged plan view of a display module according to an embodiment of the invention;

FIG. 20 is a schematic view of an alternative cross-sectional configuration taken along line A-A' of FIG. 1;

fig. 21 is a schematic plan view of another display module according to an embodiment of the invention;

fig. 22 is a schematic plan view of a display device according to an embodiment of the present invention.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Referring to fig. 1 and fig. 2 in combination, fig. 1 is a schematic plan view of a display module according to an embodiment of the present invention, fig. 2 is a schematic sectional view taken along a direction a-a' in fig. 1, and a display module 000 according to an embodiment of the present invention includes: a light transmissive region AA1 (not filled in the drawing) and a light emitting region AA2, the light transmissive region AA1 being located between two adjacent light emitting regions AA 2;

the display module 000 includes:

a plurality of light emitting elements 10, the light emitting elements 10 being located within the light emitting areas AA 2;

a plurality of light path conversion structures 20 located on a side of the light emitting element 10 away from the light emitting surface E of the light emitting element 10 and located in the light emitting area AA 2;

the light path conversion structure 20 may change the propagation direction of the first light L, so that the first light L exits from the light-transmitting area AA 1; the first light L includes light incident from the first side M to the light emitting area AA 2; the first side M refers to a side of the light path conversion structure 20 away from the light emitting element 10. It is understood that fig. 2 of the present embodiment is only illustrated by a first light ray L, and does not represent the actual number and the actual direction of the first light rays L, and the first light ray L generally refers to all light rays incident to the light emitting area AA2 from the first side M.

Specifically, the display module 000 provided in this embodiment may be a display module for implementing transparent display, where the display module 000 includes a light-transmitting area AA1 and a light-emitting area AA2, and the light-transmitting area AA1 is located between two adjacent light-emitting areas AA 2; alternatively, the display module 000 may include a plurality of light transmissive regions AA1 and a plurality of light emitting regions AA2, any one of the light transmissive regions AA1 is located between two adjacent light emitting regions AA2, the light emitting region AA2 is provided with the light emitting device 10, and one light emitting region AA2 may be understood as a region where one sub-pixel of the display module 000 is located, or one light emitting region AA2 and one light transmissive region AA1 adjacent thereto may be understood as a region where one sub-pixel of the display module 000 is located. The light emitting element 10 of the present embodiment may be an organic light emitting diode, a Micro LED (Micro light emitting diode) or a Mini LED (sub-millimeter light emitting diode), and the light emitting area AA2 may be disposed with the light emitting element 10 and a driving circuit (including a driving transistor, a signal trace, and other structures formed by opaque materials, not shown in the drawings) electrically connected to the light emitting element 10 and driving the light emitting element 10 to emit light. Optionally, the light emitting element 10 of this embodiment may be a Micro LED or a Mini LED, and since the brightness of the Micro LED or the Mini LED is high and the service life is long, and the light emitting efficiency of the particles of the Micro LED or the Mini LED increases with the increase of the brightness, the light emitting area AA2 emits light by using the Micro LED or the Mini LED, which not only can improve the service life of the display module 000, but also can achieve higher display brightness and improve the display contrast. In addition, because the Micro LED or the Mini LED has high brightness and long service life, the layout area of the light emitting region AA2 can be reduced under the condition that the service life of the Micro LED or the Mini LED is allowable, and the area of the light transmitting region AA1 can be increased under the same PPI (pixel density), so that the light transmittance of the display module 000 when used as a transparent display screen can be further improved.

When the display module 000 of the embodiment works, the light emitted from the light emitting element 10 exits the display module 000 from the light emitting surface E of the light emitting element 10, that is, the side of the light emitting surface E of the light emitting element 10 can be understood as the light emitting side N of the display module 000, and the light emitting area AA2 of the display module 000 is used for displaying a picture required to be displayed by the display module 000. The side of the light path conversion structure 20 away from the light emitting side N of the display module 000 can be understood as the backlight side of the display module 000 in this embodiment, i.e. the first side M of the light path conversion structure 20 away from the light emitting element 10 in this embodiment is also the incident side of the first light L. For the first light L incident from the first side M to the light emitting region AA2 (the first light L can be understood as the ambient light on the backlight side of the display module 000), the light path conversion structure 20 disposed on the side away from the light emitting surface E of the light emitting element 10 of the embodiment can change the propagation direction of the first light L, so that the first light L can exit from the light transmitting region AA1 after changing the propagation direction.

In the embodiment, through the arrangement of the optical path conversion structure 20, the first light L originally incident from the first side M to the light emitting region AA2 (non-light-transmitting region) can generate an optical path change inside the optical path conversion structure 20 after entering the optical path conversion structure 20 (not shown in the figure, the optical path change direction inside the optical path conversion structure 20 is not shown, it can be understood that the optical path change may include reflection, total reflection, and the like generated inside the optical path conversion structure 20), and then finally exits the display module 000 from the light-transmitting region AA1 after changing the propagation direction, and reaches the user located at the light-emitting side N of the display module 000, so that the user can observe the first light L, that is, the user can observe the object located at the first side M of the display module 000 (or the scene picture behind the display module 000) at the light-emitting side N of the display module 000, under the condition that the display module 000 has the same PPI, the light transmittance of the 000 backlight side of the display module is improved, and the transparent display effect is improved.

The light emitting area AA2 of the display module 000 of the embodiment can realize image display by the light emitting elements 10 with different light emitting colors, the light transmitting area AA1 can transmit ambient light to enable a user to view a scene on the backlight side (the first side M) of the display module 000, and the embodiment further provides the light path conversion structure 20 in the light emitting area AA2 to change the propagation direction of the first light L incident on the light emitting area AA2 from the first side M, so that the first light L exits from the light transmitting area AA1 after changing the propagation direction, thereby implementing perfect combination of an object and a multimedia display image, presenting an intuitive image, enabling the display content to have expressive power, bringing better visual effect to the user, further improving the light transmittance of the display module 000, and enabling an image which is originally on the first side M of the display module 000 and possibly shielded by the light emitting area AA2 (a non-light transmitting area) to be seen, further, the object image (or the scene image on the back of the display module 000) of the first side M of the display module 000 observed by the user can be more comprehensive, and a better transparent display effect can be realized. Moreover, since the light path conversion structure 20 is disposed in the light emitting area AA2 of the display module 000, the light transmittance of the display module 000 can be improved without affecting the normal display of the display module 000.

It can be understood that the light transmissive area AA1 of this embodiment only includes transparent material, does not include the metal of shading to walk the line etc. to can avoid the scattering of metal walking the line to light, can also improve the light transmittance of light transmissive area AA1, make the image of the first side M that sees through display module 000 clearer, improve transparent display effect.

It should be noted that the display module 000 of the present embodiment includes, but is not limited to, the above structure, and may also include other structures capable of implementing a display function, and in the specific implementation, the setting structure of the display module capable of implementing a transparent display effect in the related art may be referred to for understanding, and the details of the embodiment are not repeated herein.

It should be further noted that, in the embodiment, the specific shape and structure of the light path conversion structure 20 are not specifically limited, and may be a geometric structure as shown in fig. 2, or may be other shape and structure, and only needs to be disposed within the light emitting area AA2, and the propagation direction of the first light L can be changed, so that the first light L finally exits from the light transmitting area AA 1.

In some alternative embodiments, please refer to fig. 1 and fig. 3 in combination, fig. 3 is another schematic cross-sectional structure diagram along a-a' direction in fig. 1, the display module 000 in this embodiment further includes a substrate 30 and a control circuit layer 40, in a direction Z perpendicular to a plane of the display module 000, the substrate 30 and the control circuit layer 40 are both located on a side of the light emitting element 10 facing the light path conversion structure 20, the control circuit layer 40 is located between the substrate 30 and the light emitting element 10, and the light emitting element 10 is electrically connected to the control circuit layer 40.

The embodiment explains that the display module 000 may further include a substrate 30 and a control circuit layer 40, optionally, the substrate 30, the control circuit layer 40 and the light emitting element 10 may all be film structures of a display panel, and in a direction Z perpendicular to a plane of the display module 000, the substrate 30 and the control circuit layer 40 are both located on a side of the light emitting element 10 facing the light path conversion structure 20, that is, the substrate 30 and the control circuit layer 40 are both located on a side of the light emitting element 10 away from the light emitting surface E thereof, the substrate 30 may be at least used as a carrier substrate of a display panel including the control circuit layer 40 and the light emitting element 10, and the optional substrate 30 may be made of a transparent material. The control circuit layer 40 is located between the substrate 30 and the light emitting device 10, the light emitting device 10 is electrically connected to the control circuit layer 40, the control circuit layer 40 is used for setting a driving circuit electrically connected to the light emitting device 10 and capable of driving the light emitting device 10 to emit light, such as a driving transistor of a pixel driving circuit, a signal routing structure, and the like, in this embodiment, the specific structure of the control circuit layer 40 is not specifically limited, and only when the control circuit layer 40 is made of an opaque material, the made structures are located within the range of the light emitting region AA2, so that the transmittance of the light transmitting region AA1 is prevented from being affected.

It should be understood that, in the embodiment, only the substrate 30 and the control circuit layer 40 are located on the side of the light emitting element 10 facing the light path conversion structure 20 in the direction Z perpendicular to the plane of the display module 000, the control circuit layer 40 is located between the substrate 30 and the light emitting element 10, for the specific location of the light path conversion structure 20 (for example, the light path conversion structure 20 may be located outside the display panel including the substrate 30, the control circuit layer 40, and the light emitting element 10, or the light path conversion structure 20 may be located between the substrate 30 and the control circuit layer 40, or the light path conversion structure 20 may also be located between the control circuit layer 40 and the light emitting element 10, as shown in fig. 3, etc.), the embodiment is not particularly limited, and only needs to satisfy that the light path conversion structure 20 is located on the side away from the light emitting surface E of the light emitting element 10, the first light L incident to the light emitting region AA2 from the first side M needs to pass through the light path conversion structure 20 first, and then emitted from the light-transmitting area AA 1.

In some alternative embodiments, as shown in fig. 3, the optical path conversion structure 20 is disposed between the substrate base plate 30 and the light emitting element 10 in a direction Z perpendicular to the plane of the display module 000. This embodiment explains that when the optical path conversion structure 20 is located on the side away from the light emitting surface E of the light emitting element 10 in the direction Z perpendicular to the plane of the display module 000, the optical path conversion structure 20 may be disposed between the substrate 30 and the light emitting element 10, that is, the optical path conversion structure 20 may be a partial film layer in the display panel structure, so that the optical path conversion structure 20 may be packaged and molded together with the structure of the display panel itself including the substrate 30, the control circuit layer 40, and the light emitting element 10.

Alternatively, as shown in fig. 4, fig. 4 is another schematic cross-sectional structure view along the direction a-a' in fig. 1, the control circuit layer 40 includes a first organic layer 401, and the light path conversion structure 20 and the first organic layer 401 are disposed in the same layer and material.

This embodiment explains that when the optical path conversion structure 20 is disposed between the substrate 30 and the light emitting device 10, since the light emitting device 10 is electrically connected to the control circuit layer 40, and the control circuit layer 40 is disposed with a conductive film (e.g. a conductive film for manufacturing a gate G, a source S, a drain D, various signal traces, etc. of a driving transistor), an insulating organic film is required, and the manufacturing material of the optical path conversion structure 20 only needs to satisfy a good optical path transmission effect, so the material of the organic film can be used as the manufacturing material of the optical path conversion structure 20, that is, the control circuit layer 40 can at least include a first organic layer 401 (or a first organic layer 401 formed by stacking a plurality of organic insulating sub-layers, which is illustrated as an example in fig. 4 by taking the first organic layer 401 as an organic insulating layer between the gate G and the source S/drain D), the optical path conversion structure 20 is disposed with the same layer as the first organic layer 401, by making the first organic layer 401 into the geometric shape of each optical path conversion structure 20, the first organic layer 401 of the multiplexing display module 000 itself can be used as a making film layer of the optical path conversion structure 20, which is beneficial to the overall thinning of the display module 000.

It should be noted that, when the first organic layer 401 is manufactured into the geometric shape of each optical path conversion structure 20, as shown in fig. 4, the position of the light-transmitting area AA1 of the first organic layer 401 may be an empty space F, and fig. 4 is only for illustrating the optical path conversion structure 20 clearly, the empty space F of the first organic layer 401 at the position of the light-transmitting area AA1 is illustrated to be large, and the thicknesses of the layers of the display module 000 in actual implementation are all thin, that is, the thickness of the optical path conversion structure 20 in the direction Z perpendicular to the plane of the display module 000 is also thin, so that the empty space F of the first organic layer 401 at the position of the light-transmitting area AA1 in actual implementation is small, and even if the empty space does not affect the laying flatness of the other layers of the display module 000. Or, even if there is slight unevenness in the subsequent film layer laying due to the empty space F, the unevenness can be adjusted by other film layer structures of the display module 000, such as the encapsulation layer, to meet the requirement of process flatness.

In some alternative embodiments, as shown in fig. 5, fig. 5 is another schematic cross-sectional view along the direction a-a' in fig. 1, in this embodiment, the empty space F of the first organic layer 401 at the position of the light-transmitting area AA1 may be further filled with other materials that do not affect the exit angle of light and can only transmit light (the light-transmitting material in the empty space F is shown by a diagonal stripe pattern in the figure), so as to further improve the flatness of the film layer.

In some alternative embodiments, please refer to fig. 1 and fig. 6 in combination, fig. 6 is another schematic cross-sectional view along the direction a-a' in fig. 1, in this embodiment, in the direction Z perpendicular to the plane of the display module 000, the optical path conversion structure 20 is located on the side of the substrate 30 away from the control circuit layer 40.

The embodiment explains that the display module 000 may further include a substrate base plate 30 and a control circuit layer 40, the substrate base plate 30, the control circuit layer 40 and the light emitting element 10 may all be film structures of a display panel, and in a direction Z perpendicular to a plane where the display module 000 is located, the optical path conversion structure 20 may be located on one side of the substrate base plate 30 away from the control circuit layer 40, that is, the optical path conversion structure 20 is a structure disposed outside the display panel, so that it is not necessary to change an original process of the display panel, it is only necessary to separately manufacture the optical path conversion structures 20 of a plurality of geometric shapes on one side of the substrate base plate 30 of the manufactured display panel away from the control circuit layer 40, which is beneficial to reducing the overall process difficulty of the display module 000.

In some alternative embodiments, please refer to fig. 1 and fig. 7 in combination with fig. 8, fig. 7 is another schematic cross-sectional structure diagram along direction a-a' in fig. 1, fig. 8 is a schematic light path transmission diagram of the light path conversion structure in fig. 7, in this embodiment, the light path conversion structure 20 includes a first surface 20A and a second surface 20B connected to each other, the first surface 20A faces the light emitting element 10, the second surface 20B is located on a side of the first surface 20A facing away from the light emitting element 10, the first surface 20A is parallel to a plane where the display module 000 is located, and an angle between the second surface 20B and the first surface 20A is α, α ≦ 45 °;

as shown in fig. 7 and 8, the first surface 20A is provided with a total reflection film 501, and the total reflection film 501 reflects the first light L incident from the second surface 20B side to the first surface 20A;

the second surface 20B is provided with a transflective film 502, the transflective film 502 enables the first light L incident from the first side M to be transmitted through the transflective film 502 and incident to the first surface 20A, and the first light L incident from the first surface 20A side to the second surface 20B is reflected.

The embodiment explains that the specific structure of the light path conversion structure 20 may be a geometric triangle structure, where the light path conversion structure 20 includes a first surface 20A and a second surface 20B connected to each other, the first surface 20A faces the light emitting element 10, the second surface 20B is located on a side of the first surface 20A facing away from the light emitting element 10, and the first surface 20A is parallel to a plane where the display module 000 is located (i.e. the first surface 20A is parallel to a plane where the substrate 30 is located), and an angle α between the second surface 20B and the first surface 20A is α, α ≦ 45 °, at least, the first surface 20A and the second surface 20B of the light path conversion structure 20 may form a triangle angle, and since the first surface 20A is parallel to the plane where the substrate 30 is located, the second surface 20B may be understood as an inclined plane of the light path conversion structure 20 in a geometric shape. In this embodiment, the total reflection film 501 is further disposed on the first surface 20A, and the transflective film 502 is disposed on the second surface 20B, optionally, the total reflection film 501 may be completely attached to the first surface 20A or plated on the first surface 20A by using a plating process, and the transflective film 502 may be completely attached to the second surface 20B or plated on the second surface 20B by using a plating process. When the first light L of the first side M enters the light emitting region AA2, the first light L firstly passes through the transflective film 502 of the second surface 20B and enters the first surface 20A inside the optical path conversion structure 20, and after the first light L entering the first surface 20A from the second surface 20B side is reflected by the total reflection film 501 attached to the first surface 20A, and the first light L reflected by the transflective film 502 may directly exit to the light-transmitting area AA1 through another surface of the optical path conversion structure 20 with a triangular geometry, and the second light L reflected by the transflective film 502 still exits to the total reflection film 501 of the first surface 20A and is reflected again, and the light path is changed and finally exits to the light-transmitting area AA1 through the transflective film 502 of the second surface 20B. It can be understood that the first light L may finally exit from the light transmitting area AA1 after being reflected between the total reflection film 501 and the semi-reflective and semi-transparent film 502 inside the light path conversion structure 20 for multiple times, fig. 8 of this embodiment is only an exemplary illustration of a light path transmission structure diagram of the first light L entering from each direction of the first side M to the second surface 20B inside the light path conversion structure 20 and finally exiting to the light transmitting area AA1, but is not limited to the light path transmission structure, and in a specific implementation, as much of the first light L may exit from the light transmitting area AA1 by controlling an included angle α between the second surface 20B and the first surface 20A, an extending area of the second surface 20B and the first surface 20A. In the embodiment, the total reflection film 501 is disposed on the first surface 20A of the optical path conversion structure 20, and the semi-reflective and semi-transparent film 502 is disposed on the second surface 20B, so that light emitted to the middle of the light emitting region AA2 (i.e. light with a positive viewing angle relative to the light emitting region AA2, and the first light L parallel to the direction Z) is more easily changed in transmission direction by the optical path conversion structure 20 of the structure, and is finally reflected for multiple times and emitted to the light transmissive region AA 1.

In this embodiment, an included angle α between the second surface 20B and the first surface 20A is set to be less than or equal to 45 °, so that the first light L transmitted through the transflective film 502 can be reflected by the total reflection film 501 of the first surface 20A to the transflective film 502 of the second surface 20B again after passing through the second surface 20B (inclined plane) of the angle α, and then reflected by the transflective film 502 to the light-transmitting area AA1 to be emitted, thereby preventing the first light L from being unable to be emitted from the light-emitting side N of the display module 000 when the included angle α is greater than 45 °.

As shown in fig. 9, fig. 9 is a schematic diagram of optical path transmission when an included angle α 'between the first surface 20A' and the second surface 20B 'is greater than 45 °, and a first light L' transmitted through the transflective film 502 'passes through the second surface 20B' (inclined surface) with a larger angle α ', and is directly reflected by the total reflection film 501' of the first surface 20A ', and exits from the first side M', instead of exiting from the light exit side N 'of the display module 000 to be seen by a user, so that when the included angle α' is greater than 45 degrees, the light transmittance of the light transmissive area AA1 of the display module 000 is rather reduced.

In this embodiment, the included angle α between the second surface 20B and the first surface 20A is limited to be less than or equal to 45 °, so that the first light L reflected by the transflective film 502 can be emitted from the light-emitting side N of the display module 000 through the second surface 20B (inclined plane) at the angle and observed by a user, which is beneficial to improving the transparent display effect. Moreover, in the present embodiment, the transflective film and the total reflection film are integrated on the same optical conversion structure, so that part of the light emitted to the light emitting region can be emitted from the light transmitting region, and while the transparent display effect is improved, the included angle α between the second surface 20B and the first surface 20A is less than or equal to 45 °, which means that the thickness of the whole optical path conversion structure 20 is as thin as possible in the direction Z perpendicular to the plane of the display module 000, thereby facilitating the realization of the thin design of the whole display module 000.

It should be noted that, the optical path conversion structure 20 of the present embodiment may be made of glass or an organic material such as plastic, and only needs to satisfy that the first surface 20A is provided with the total reflection film 501, and the second surface 20B is provided with the semi-reflective and semi-permeable film 502, so that the first light L is finally emitted to the light-transmitting area AA1 from the other surface of the optical path conversion structure 20 except the first surface 20A and the second surface 20B after multiple reflections of the semi-reflective and semi-permeable film 502 and the total reflection film 501. It is understood that the material of the total reflection film 501 in this embodiment is not particularly limited, and may be a metal reflection film or a structure made of other materials; in this embodiment, the material of the semi-reflective and semi-permeable film 502 is not specifically limited, and may be made of plastic, adhesive, rubber or other materials, or made of any one metal of silver, aluminum, molybdenum, copper, titanium, and chromium, or an alloy of any two or more of them, and only needs to satisfy the requirement of realizing the semi-reflective and semi-permeable effect.

Optionally, the thickness of the light path conversion structure 20 in the direction Z perpendicular to the plane of the display module 000 may be several to several tens of micrometers, so that the first light L can be reflected back and forth on the first surface 20A and the second surface 20B for multiple times and finally emitted from the light transmissive area AA1, and meanwhile, the thickness of the light path conversion structure 20 is prevented from affecting the overall thickness of the display module 000.

In some alternative embodiments, please refer to fig. 1, fig. 7, fig. 8, fig. 10 and fig. 11 in combination, fig. 10 is a schematic cross-sectional view of a direction from a-a' in fig. 1, fig. 11 is a schematic optical path transmission diagram of the optical path conversion structure in fig. 10, in this embodiment, the total reflection film 501 reflects the light P incident on the first surface 20A from the light emitting device 10 side by the total reflection film 501.

This embodiment explains that due to the reflection action of the total reflection film 501, the light P incident from the light emitting element 10 side to the first surface 20A, that is, the light (which can be understood as the outgoing light of the light emitting element 10) incident from the light outgoing side N of the display module 000 to the first surface 20A, can be reflected back to the light emitting area AA2 by the total reflection film 501, which is beneficial to improving the light extraction efficiency of the light emitting element 10 and improving the display effect of the display module 000 realized by the light emitting element 10.

In some alternative embodiments, please refer to fig. 1, fig. 7 and fig. 8 in combination with fig. 12 and fig. 13, in which fig. 12 is a schematic view of another cross-sectional structure from a-a' in fig. 1, fig. 13 is a schematic view of optical path transmission of the optical path conversion structure in fig. 12, in this embodiment, the optical path conversion structure 20 further includes a third surface 20C, the third surface 20C is connected to the first surface 20A and the second surface 20B, respectively, and the third surface 20C is an exit surface of the first light L;

the included angle between the third surface 20C and the first surface 20A is beta, and beta is more than or equal to 90 degrees; where β is an angle formed by the third surface 20C and the first surface 20A toward the second surface 20B.

This embodiment explains that the light path conversion structure 20 in a geometric triangle shape includes a third surface 20C in addition to a first surface 20A parallel to the plane of the substrate base plate 3 and a second surface 20B connected to the first surface 20A, the third surface 20C is respectively connected to the first surface 20A and the second surface 20B, and the third surface 20C is used as an exit surface for the first light L, that is, the first light L after multiple reflections inside the light path conversion structure 20 finally exits to the light transmissive region AA1 through the third surface 20C. In this embodiment, an included angle β between the third surface 20C and the first surface 20A is greater than or equal to 90 °, β is an included angle formed by the third surface 20C and the first surface 20A and facing the second surface 20B, that is, the included angle β between the third surface 20C and the first surface 20A may be a right angle (as shown in fig. 7 and fig. 8) or an obtuse angle (as shown in fig. 12 and fig. 13), so that the third surface 20C can face the light emitting side N of the display module 000 as much as possible, and the second surface 20B has more reflective areas facing the light emitting side N of the display module 000, which is beneficial for enabling the first light L incident on the first side M to exit from the light transmitting area AA1 on the light emitting side N of the display module 000 through the third surface 20C after being reflected by the transflective film 502 of the second surface 20B for multiple times in the light path conversion structure 20, so as to prevent the first light L from exiting from the first side M, and further, the light transmittance of the light-transmitting area AA1 can be improved. Moreover, in the embodiment, the included angle β between the third surface 20C and the first surface 20A is an obtuse angle, so that the transparent display effect is improved, and at the same time, the thickness of the whole optical path conversion structure 20 in the direction Z perpendicular to the plane of the display module 000 can be made as thin as possible (it can be understood that the optical path conversion structure 20 is compressed relatively flat), thereby being beneficial to implementing the thin design of the whole display module 000.

Optionally, as shown in fig. 7 and 8, an included angle β between the third surface 20C and the first surface 20A may be a right angle, that is, the third surface 20C is perpendicular to the plane of the display module 000, so as to reduce the difficulty of the manufacturing process, and fully utilize the space of the light emitting region AA2, so as to prevent the light path conversion structure 20 from blocking the light entering the light transmissive region AA1, which affects the transparent display effect.

In some alternative embodiments, please refer to fig. 1, fig. 14 and fig. 15 in combination, fig. 14 is a schematic view of another cross-sectional structure along the direction of a-a' in fig. 1, fig. 15 is a schematic view of optical path transmission of the optical path conversion structure in fig. 14, in this embodiment, the optical path conversion structure 20 further includes a third surface 20C, the third surface 20C is connected to the first surface 20A and the second surface 20B, respectively, and the third surface 20C is an exit surface of the first light L; the third surface 20C is an arc surface, and the third surface 20C protrudes in a direction away from the second surface 20B to form an arc surface.

The present embodiment further explains that the third surface 20C of the light path conversion structure 20 may be an arc surface formed by protruding in a direction away from the second surface 20B, that is, the third surface 20C is used as an exit surface of the first light L, and in a case that the first light L after multiple reflections inside the light path conversion structure 20 finally exits to the light transmissive area AA1 through the third surface 20C, the third surface 20C may be designed as an arc surface, so that the exit surface of the first light L of the light path conversion structure 20 is similar to a lens surface, and further the transmission direction of the first light L may be further changed when the first light L exits to the light transmissive area AA1 from the third surface 20C, so as to achieve a better exit angle from the light transmissive area AA1, and ensure that the first light L is seen by a user on the light exit side N of the display module 000.

It is understood that the curvature of the arc surface of the third surface 20C is not particularly limited in this embodiment, and it is only necessary that the arc surface of the third surface 20C can have a lens-like effect, and the direction of the first light L exiting from the light transmissive area AA1 is changed to be better observed by the user.

In some alternative embodiments, please refer to fig. 1 and fig. 16 in combination, fig. 16 is another schematic cross-sectional structure diagram along the direction a-a' in fig. 1, in this embodiment, in the direction X parallel to the plane of the display module 000, at least two light path conversion structures 20 are included between two adjacent light-transmissive areas AA1, and third surfaces 20C of two light path conversion structures 20 between two adjacent light-transmissive areas AA1 are away from each other.

This embodiment explains that at least two light path conversion structures 20 may be correspondingly disposed on one light emitting region AA2 of the display module 000, that is, at least two light path conversion structures 20 are disposed between two adjacent light transmissive regions AA1 in a direction X parallel to a plane of the display module 000, and third surfaces 20C of two light path conversion structures 20 between two adjacent light transmissive regions AA1 are away from each other, as shown in fig. 16, in two light path conversion structures 20 disposed between two adjacent light transmissive regions AA1, the third surface 20C of one light path conversion structure 20 is closer to one light transmissive region AA1, and the third surface 20C of the other light path conversion structure 20 is closer to the other light transmissive region AA1, so that at least two light path conversion structures 20 may be disposed in one light emitting region AA2, so that first light L emitted from the two third surfaces 20C is respectively guided into the two adjacent light transmissive regions AA1, making the transparent display more uniform.

Optionally, in fig. 16 of the present embodiment, only two light path conversion structures 20 are included between two adjacent light transmission regions AA1 for example, but not limited to this number, four light path conversion structures 20 may be further included between two adjacent light transmission regions AA1, the four light path conversion structures 20 may be disposed around a light emitting region AA2, and third surfaces 20C of at least two of the four light path conversion structures 20 face the light transmission region AA1 closest thereto, so that the transparent display effect may be further more uniform.

Optionally, as shown in fig. 17 and fig. 18, fig. 17 is another schematic cross-sectional structure view from a-a 'direction in fig. 1, and fig. 18 is another schematic cross-sectional structure view from a-a' direction in fig. 1, in this embodiment, at least two light path converting structures 20 between two adjacent light transmitting areas AA1 may be an integrated structure, that is, at least two light path converting structures 20 corresponding to the same light emitting area AA2 may be an integrated structure, which is favorable for reducing the manufacturing difficulty and improving the manufacturing efficiency.

It should be understood that, in this embodiment, the shape of the at least two light path conversion structures 20 of the integral structure located between two adjacent light transmission regions AA1 is not specifically limited, and may be the structure of the light path conversion structure 20 shown in fig. 17 or fig. 18, or may be other shapes integrally formed, and this embodiment is not specifically limited, and only needs to satisfy that the exit surface of the first light L, that is, the third surface 20C, faces toward the light transmission region AA1 adjacent thereto.

Optionally, as shown in fig. 19, fig. 19 is a schematic view of a partially enlarged planar structure of the display module according to the embodiment of the present invention (it can be understood that, in order to clearly illustrate the structure of the embodiment, transparency filling is performed in fig. 19), a light emitting region AA2 between two adjacent light transmitting regions AA1 may further include a whole annular structure formed by a plurality of light path converting structures 20, and the third surface 20C of each light path converting structure 20 faces the direction of the light transmitting region AA1 as much as possible, so that the transparent display effect of the light transmitting region AA1 in each direction is more uniform.

In some alternative embodiments, please refer to fig. 1 and fig. 20 in combination, fig. 20 is a schematic cross-sectional view along the direction of a-a' in fig. 1, in this embodiment, the plurality of light emitting elements 10 at least include a first light emitting element 101 and a second light emitting element 102, and the light emitting efficiency of the first light emitting element 101 is greater than that of the second light emitting element 102;

the plurality of optical path conversion structures 20 at least include a first optical path conversion structure 201 and a second optical path conversion structure 202, and in a direction Z perpendicular to the plane of the display module 000, the first optical path conversion structure 201 overlaps with the first light emitting element 101, and the second optical path conversion structure 202 overlaps with the second light emitting element 102;

an included angle between the third surface 20C of the first light path conversion structure 201 and the first surface 20A is β 1, an included angle between the third surface 20C of the second light path conversion structure 202 and the first surface 20A is β 2, and β 1 is less than β 2.

This embodiment explains that the light path conversion structures 20 corresponding to the light emitting elements 10 with different light emitting colors may have different structures, that is, a plurality of different light path conversion structures 20 may be designed differently. Since the display module 000 generally includes a plurality of light emitting elements 10 with different light emitting colors to realize a color display, the light emitting elements with different light emitting colors have different light emitting efficiencies, for example, the light emitting efficiency of the blue light emitting element is much smaller than the light emitting efficiencies of the red light emitting element and the green light emitting element. In this embodiment, the plurality of light emitting elements 10 at least include a first light emitting element 101 and a second light emitting element 102, the light emitting efficiency of the first light emitting element 101 is greater than that of the second light emitting element 102, the optional first light emitting element 101 may be one of a red light emitting element or a green light emitting element, the second light emitting element 102 may be a blue light emitting element, or other embodiments may also be adopted, and this embodiment is not particularly limited. Since the light emitting efficiency of the second light emitting element 102 is low, the image display effect of the corresponding position of the second light emitting element 102 is relatively low. Therefore, in the embodiment, the included angle β 1 between the third surface 20C of the first light path conversion structure 201 corresponding to the position of the first light emitting element 101 and the first surface 20A is smaller than the included angle β 2 between the third surface 20C of the second light path conversion structure 202 corresponding to the position of the second light emitting element 102 and the first surface 20A, so that the first light L reflected by the second surface 20B of the second light path conversion structure 202 is more, that is, the light emitting effect emitted from the third surface 20C to the light transmissive region AA1 is better, more first light L can be reflected by the second surface 20B formed by the larger included angle β 2 and emitted from the third surface 20C with a larger range, that is, more first light L is emitted from the light transmissive region AA1 at the position corresponding to the second light emitting element 102, which is favorable for improving the light emitting effect of transparent display at the position corresponding to the second light emitting element 102 with a lower light emitting efficiency, the experience satisfaction of the user can be improved.

It can be understood that, in this embodiment, a specific angle between the third surface 20C of the first light path conversion structure 201 and the first surface 20A is β 1, and an angle between the third surface 20C of the second light path conversion structure 202 and the first surface 20A is β 2 is not specifically limited, and only when the specific angle is greater than or equal to 90 °, the second light emitting element 102 with low light emitting efficiency may correspond to the second light path conversion structure 202, the first light emitting element 101 with high light emitting efficiency corresponds to the first light path conversion structure 201, and the included angle β 1 is smaller than the included angle β 2.

In some alternative embodiments, please refer to fig. 16 and 21 in combination, fig. 21 is another schematic plane structure diagram of a display module according to an embodiment of the present invention (it can be understood that, for clarity, transparency filling is performed in fig. 21 to illustrate the structure of the optical path conversion structure 20 in this embodiment), in a direction parallel to the plane of the display module 000, a plurality of optical path conversion structures 20 are connected to each other;

the light path conversion structure 20 is disposed around the light transmissive area AA1 in a direction Z perpendicular to the plane of the display module 000.

This embodiment further illustrates that the light path conversion structures 20 located in the light emitting areas AA2 may be connected to each other to form an integral structure, and the light path conversion structures 20 connected to each other are disposed around the light transmissive area AA1, so that they can be manufactured simultaneously in the manufacturing process, which is beneficial to improving the manufacturing efficiency.

In some optional embodiments, please refer to fig. 22, where fig. 22 is a schematic plane structure diagram of a display device according to an embodiment of the present invention, a display device 111 according to the embodiment includes a display module 000 according to the above embodiment of the present invention, and a specific structure of the display module 000 has been described in detail in the above embodiments, and is not repeated herein. Of course, the display device 111 shown in fig. 22 is only a schematic illustration, and the display device may be any electronic device with a transparent display function, such as a showcase, smart glasses, a vehicle-mounted display screen, a mobile phone, a tablet computer, a notebook computer, and the like, and the invention is not limited thereto. The display device 111 provided in the embodiment of the present invention has the beneficial effects of the display module 000 provided in the embodiment of the present invention, and specific descriptions of the display module 000 in the above embodiments may be specifically referred to, and this embodiment is not described herein again.

According to the embodiment, the display module and the display device provided by the invention at least realize the following beneficial effects:

the luminous area of the display module provided by the invention can realize picture display through the luminous elements with different luminous colors, the light-transmitting area can transmit ambient light to enable a user to watch a scene at the backlight side (the first side) of the display module, the light path conversion structure is arranged in the luminous area to change the transmission direction of first light rays incident into the luminous area from the first side, the first light rays are emitted from the light-transmitting area after changing the transmission direction, a real object and a multimedia display picture are perfectly combined to present a visual picture, the display content has expressive force, the user is provided with better visual effect, meanwhile, the light transmittance of the display module can be further improved, an image which is possibly shielded by the luminous area (a non-light-transmitting area) at the first side of the display module originally can be seen, and further an object image (or a scene picture at the back of the display module) at the first side of the display module observed by the user can be more comprehensive, and a better transparent display effect is realized. And because the light path conversion structure is arranged in the luminous area of the display module, the light transmittance of the display module can be improved on the basis of not influencing the normal display picture of the display module.

Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.