Display substrate and display device

Abstract

The display substrate of the present disclosure comprises a base material (1), an organic electroluminescent display layer (2), a touch layer (3), a polarizing plate (4), and a cover plate (5) laminated in this order on the base material (1), the organic electroluminescent display layer (2) and the touch layer (3) being bonded together by a first adhesive layer (6), and the polarizing plate (4) and the cover plate (5) being bonded together by a second adhesive layer (7), the display substrate comprises a camera mounting area (102) and a display area (101) surrounding it, a camera (12) is attached to the side of the base material (1) away from the organic electroluminescent display layer (2) and is located within the camera mounting area (102), at least a light-emitting layer is not provided in a region of the organic electroluminescent display layer (2) corresponding to the camera mounting area (102), and a first opening (41) is opened in a region of the polarizing plate (4) corresponding to the camera mounting area (102). The display device of the present disclosure includes the above-described display substrate, and further includes a camera (12) provided on the side of the base material (1) of the display substrate away from the organic electroluminescent display layer (2) and located within the camera mounting area (102).

Description

Technical Field

[0001] Embodiments of the present disclosure belong to the field of display technology, and specifically relate to a display substrate and a display device.

Background Art

[0002] Currently, AMOLED (Active-matrix organic light-emitting diode) screen modules have become the mainstream for realizing full screens. As one of the new full-screen forms, making holes to install a camera on the full screen is being increasingly accepted by more consumers.

Summary of the Invention

Problems to be Solved by the Invention

[0003] Embodiments of the present disclosure provide a display substrate and a display device.

Means for Solving the Problems

[0004] In a first aspect, embodiments of the present disclosure include a substrate, an organic electroluminescence display layer, a touch layer, a polarizer, and a cover plate sequentially laminated on the substrate. The organic electroluminescence display layer and the touch layer are adhered by a first adhesive layer, and the polarizer and the cover plate are adhered by a second adhesive layer. The display substrate includes a display area and a camera mounting area. The display area surrounds the camera mounting area, and a camera is mounted on a side of the substrate away from the organic electroluminescence display layer. The display substrate is located within the camera mounting area, and at least a light-emitting layer is not provided in an area of the organic electroluminescence display layer corresponding to the camera mounting area, and a first opening is provided in an area of the polarizer corresponding to the camera mounting area.

[0005] In some embodiments, the second adhesive layer is filled in the first opening, and the surface of the second adhesive layer on the side away from the polarizing plate is flat.

[0006] In some embodiments, in a region corresponding to the camera mounting area of the organic electroluminescence display layer, a pixel driving circuit provided on the substrate is provided.

[0007] In some embodiments, the first adhesive layer is in contact with the pixel driving circuit in the camera mounting area, and the surface of the first adhesive layer on the side away from the organic electroluminescence display layer is flat.

[0008] In some embodiments, in a region corresponding to the camera mounting area of the organic electroluminescence display layer, one or more insulating layers provided on the substrate are provided.

[0009] In some embodiments, the first adhesive layer is in contact with the insulating layer in the camera mounting area, and the surface of the first adhesive layer on the side away from the organic electroluminescence display layer is flat.

[0010] In some embodiments, a packaging layer is further provided between the organic electroluminescence display layer and the first adhesive layer for packaging the organic electroluminescence display layer.

[0011] In some embodiments, a light-shielding layer is provided on the cover plate on the side close to the polarizing plate or on the side away from the polarizing plate of the cover plate, and the orthographic projection of the light-shielding layer on the substrate covers the edge of the camera mounting area.

[0012] In some embodiments, the substrate, the touch layer, and the cover plate are all light-transmissive.

[0013] In some embodiments, transparent adhesive materials are used for both the first adhesive layer and the second adhesive layer.

[0014] In a second aspect, embodiments of the present disclosure provide a display device including the above-described display substrate, further including a camera provided on a side of the substrate of the display substrate away from the organic electroluminescence display layer and located in a camera mounting area.

[0015] In some embodiments, a heat dissipation layer is further provided on a side of the substrate of the display substrate away from the organic electroluminescence display layer, and a second opening is formed in an area of the heat dissipation layer corresponding to the camera mounting area of the display substrate.

[0016] In some embodiments, a third adhesive layer provided in the second opening and a fixing plate provided on a side of the third adhesive layer away from the substrate and whose orthographic projection onto the substrate is located within the second opening are further provided. The camera is fixed to the fixing plate and is located on a side of the fixing plate away from the display substrate.

[0017] In some embodiments, the distance between the plate surface of the fixing plate away from the substrate and the substrate is equal to the thickness of the heat dissipation layer.

[0018] In some embodiments, the distance between the plate surface of the fixing plate away from the substrate and the substrate is greater than the thickness of the heat dissipation layer.

Brief Description of the Drawings

[0019] The drawings are used to provide a further understanding of the embodiments of the present disclosure, form a part of the specification, and are used together with the embodiments of the present disclosure to explain the present disclosure, but do not limit the present disclosure. By describing detailed exemplary embodiments with reference to the drawings, the above and other features and advantages will become more apparent to those skilled in the art.

[0020]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Mode for Carrying Out the Invention

[0021] For those skilled in the art to better understand the technical solutions of the embodiments of the present disclosure, the display substrate and the display device according to the embodiments of the present disclosure will be further described in detail below in combination with the drawings and specific embodiments.

[0022] Hereinafter, the embodiments of the present disclosure will be more fully described with reference to the drawings. However, the presented embodiments should not be construed as being limited to the embodiments described in the present disclosure and can be embodied in different forms. Rather, these embodiments are provided to make the present disclosure thorough and complete and to fully enable those skilled in the art to understand the scope of the present disclosure.

[0023] The embodiments of the present disclosure are not limited to the embodiments shown in the drawings and include modifications to the arrangements formed based on the manufacturing process. Therefore, the areas illustrated in the drawings have schematic attributes, and the shapes of the areas shown in the figures illustrate the specific shapes of the areas but are not intended to be limiting.

[0024] FIG. 1 is a schematic diagram of the hole-opening design in a conventional AMOLED full screen. In the AMOLED full screen, a heat dissipation layer 13, a substrate 1, an organic electroluminescence display layer 2, a first adhesive layer 6, a touch layer 3, a polarizer 4, and a second adhesive layer 7 that are sequentially laminated all have holes opened at the camera mounting positions, and only the cover plate 5 provided on the second adhesive layer 7 does not have a hole opened, and a camera 12 is mounted in the opened hole. In this design, since light is scattered and reflected by the edges of the hole-opening positions of each film layer, a light leakage phenomenon occurs, which has a great impact on the shooting effect of the camera 12. In addition, after the camera 12 is mounted in this hole, the force becomes uneven, and a phenomenon that black dots are generated at the corresponding position of the display screen during display is likely to occur, affecting the display effect of the display screen.

[0025] FIG. 2 is another schematic diagram of the hole-opening design in a conventional AMOLED full screen. In this design, holes are opened only at positions corresponding to the camera mounting positions of the heat dissipation layer 13, the polarizer 4, and the second adhesive layer 7, and the camera 12 is mounted in the hole of the heat dissipation layer 13. In this design, since a sealed space is formed at the hole-opening positions of the polarizer 4 and the second adhesive layer 7, during the high-pressure defoaming process in the manufacturing process, a pressure difference occurs between the sealed space and the outside, resulting in a concave defect at the camera mounting position on the back surface of the AMOLED display screen.

[0026] Furthermore, in FIG. 2, the camera 12 is mounted on the substrate 1 exposed by the hole-opening of the heat dissipation layer 13. Since the camera 12 is in the concave portion, light is scattered and reflected by the edge of the hole-opening position of the heat dissipation layer 13, causing the edge of the captured image of the camera 12 to become blurred and the effect to be inferior. In addition, after the camera 12 is mounted in this concave portion, uneven force occurs, and a phenomenon that black dots are generated at the corresponding position of the display screen during display is likely to occur, affecting the display effect of the display screen.

[0027] In view of the problems in the above prior art, namely, light leakage caused by the camera being attached to holes formed in a plurality of stacked film layers of an AMOLED full screen, and the phenomenon that black dots are likely to occur during display, embodiments of the present disclosure provide a display substrate and a display device.

[0028] As shown in FIG. 3, an embodiment of the present disclosure provides a display substrate including a substrate 1, an organic electroluminescence display layer 2 sequentially stacked on the substrate 1, a touch layer 3, a polarizing plate 4, and a cover plate 5. The organic electroluminescence display layer 2 and the touch layer 3 are adhered by a first adhesive layer 6, and the polarizing plate 4 and the cover plate 5 are adhered by a second adhesive layer 7. The display substrate includes a display area 101 and a camera mounting area 102. The display area 101 surrounds the camera mounting area 102. The camera is mounted on the side away from the organic electroluminescence display layer 2 of the substrate 1 and is located within the camera mounting area 102. At least a light-emitting layer is not provided in the area of the organic electroluminescence display layer 2 corresponding to the camera mounting area 102, and a first opening 41 is formed in the area of the polarizing plate 4 corresponding to the camera mounting area 102.

[0029] Here, the organic electroluminescence display layer 2 includes a pixel driving circuit, an anode, a light-emitting layer, and a cathode. The light-emitting layer is provided sandwiched between the anode and the cathode to form a sandwich structure. The anode is connected to the pixel driving circuit, the cathode is connected to the ground terminal, and the light-emitting layer can emit light by being driven by the pixel driving circuit to realize the display of the display substrate. The camera mounting area 102 is used for mounting a camera. To ensure that the camera can capture images normally, all film layers on the display substrate can transmit light in the area corresponding to the camera mounting area 102. Since the light-emitting layer in the organic electroluminescence display layer 2 emits light when driven and may affect the camera's shooting, a light-emitting layer cannot be provided in the camera mounting area 102. In the camera mounting area 102, other film layers in the organic electroluminescence display layer 2 may or may not be provided.

[0030] Since the light-emitting layer of the organic electroluminescence display layer 2 can emit light during display, it affects the image capture of the camera in the camera mounting area 102. Since the polarizing plate 4 greatly affects the light transmittance of the light rays on the display substrate, a first opening 41 is formed in the area of the polarizing plate 4 corresponding to the camera mounting area 102. Also, since at least the light-emitting layer is not provided in the area of the organic electroluminescence display layer 2 corresponding to the camera mounting area 102, the camera shooting light rays in the camera mounting area 102 of the display substrate can be smoothly transmitted, and the requirements for the light transmittance of camera shooting can also be met. As a result, the camera can be normally photographed. Further, in the camera mounting area 102 of the display substrate, an opening is formed only in the polarizing plate 4, and since the camera is mounted on the side away from the organic electroluminescence display layer 2 of the base material 1, compared with the design of making holes in each film layer of the display substrate in the prior art shown in FIG. 1, since the camera is not located in the recessed hole, the occurrence of the phenomenon that the light rays are scattered and reflected at the edge of the opened hole can be avoided. Furthermore, the light leakage phenomenon in the camera mounting area 102 can be avoided, ensuring the shooting effect of the camera. Also, since the camera is not located in the recessed hole, after the camera is mounted, the phenomenon of uneven force does not occur in the camera mounting area 102, thereby avoiding the phenomenon that the display device generates black dots during display and ensuring the display effect of the display substrate.

[0031] In some embodiments, the second adhesive layer 7 fills the first opening 41, and the surface of the second adhesive layer 7 on the side away from the polarizing plate 4 is flat. By providing it in this way, a sealed space is not formed between the second adhesive layer 7 and the cover plate 5 in the camera mounting area 102 and between the polarizing plate 4 and the cover plate 5, and for the hole-opening design in the full-screen as shown in FIG. 2, it is possible to avoid the formation of recess defects in the camera mounting area 102 on the back surface of the base material 1 of the display substrate during the manufacturing process. Since a transparent adhesive material is used for the second adhesive layer 7, the second adhesive layer 7 fills the first opening 41 of the polarizing plate 4 and has almost no influence on the transmission of the shooting light rays of the camera.

[0032] In some embodiments, in a region corresponding to the camera mounting area 102 of the organic electroluminescence display layer 2, a pixel driving circuit 8 provided on the substrate 1 is provided. Here, since light-transmissive materials are adopted for each film layer (for example, the gate electrode, gate insulating layer, source electrode, drain electrode, active layer, etc.) in the pixel driving circuit 8, it has almost no influence on the transmission of the photographing light rays of the camera.

[0033] Here, the first adhesive layer 6 is in contact with the pixel driving circuit 8 in the camera mounting area 102, and the surface of the first adhesive layer 6 on the side away from the organic electroluminescence display layer 2 is flat. By providing it in this way, a sealed space is not formed between the first adhesive layer 6 and the touch layer 3 and between the pixel driving circuit 8 and the touch layer 3 in the camera mounting area 102, and for the hole-opening design in the full screen as shown in FIG. 2, it is possible to avoid the formation of a dent defect in the camera mounting area 102 on the back surface of the substrate 1 of the display substrate in the manufacturing process. Since a transparent adhesive material is adopted for the first adhesive layer 6, the first adhesive layer 6 has almost no influence on the transmission of the photographing light rays of the camera.

[0034] In some embodiments, as shown in FIG. 4, in a region corresponding to the camera mounting area 102 of the organic electroluminescence display layer 2, one or more insulating layers 9 provided on the substrate 1 are provided. Here, each insulating layer 9 is a transparent organic insulating layer or a transparent inorganic insulating layer extending from the display area 101 of the display substrate to the camera mounting area 102. Since light-transmissive materials are adopted for each insulating layer 9, it has almost no influence on the transmission of the photographing light rays of the camera.

[0035] Here, the first adhesive layer 6 is in contact with the insulating layer 9 in the camera mounting area 102, and the surface of the first adhesive layer 6 on the side away from the organic electroluminescence display layer 2 is flat. By providing it in this way, an airtight space is not formed between the first adhesive layer 6 and the touch layer 3 and between the insulating layer 9 and the touch layer 3 in the camera mounting area 102, and for the hole-opening design in the full screen as shown in FIG. 2, it is possible to avoid the formation of recess defects on the back surface of the base material 1 of the display substrate in the camera mounting area 102 during the manufacturing process. Since a transparent adhesive material is adopted for the first adhesive layer 6, the first adhesive layer 6 has almost no influence on the transmission of the shooting light of the camera.

[0036] In some embodiments, as shown in FIG. 5, the display substrate is provided between the organic electroluminescence display layer 2 and the first adhesive layer 6, and further includes a packaging layer 10 for packaging the organic electroluminescence display layer 2. Here, the packaging layer 10 may be configured by laminating a transparent organic film and a transparent inorganic film. In the camera mounting area 102, the packaging layer 10 has almost no influence on the transmission of the shooting light of the camera.

[0037] In some embodiments, as shown in FIG. 3, the cover plate 5 is provided with a light-shielding layer 11 located on the side close to the polarizing plate 4 of the cover plate 5, and the orthographic projection of the light-shielding layer 11 on the base material 1 covers the edge of the camera mounting area 102. The installation of the light-shielding layer 11 can shield the light leakage in the edge area of the camera mounting area 102, thereby ensuring that no light leakage occurs in the edge area of the camera mounting area 102, and further ensuring the display effect of the display substrate and the shooting effect of the camera.

[0038] Here, a black ink material is adopted for the light-shielding layer 11. Note that the light-shielding layer 11 may be located on the side away from the polarizing plate 4 of the cover plate 5.

[0039] In this embodiment, the base material 1, the touch layer 3, and the cover plate 5 are all light-transmissive. Thereby, the camera mounting area 102 does not affect the transmission of the shooting light rays of the camera. Here, the base material 1 and the cover plate 5 may adopt flexible materials, whereby a flexible display substrate can be realized.

[0040] The display substrate according to the above embodiment opens a first opening in the area corresponding to the camera mounting area of the polarizing plate, and at least the light-emitting layer is not provided in the area corresponding to the camera mounting area of the organic electroluminescence display layer. Thereby, the camera shooting light rays in the camera mounting area of the display substrate can be smoothly transmitted, and the requirements for the light transmittance of camera shooting can be satisfied. Thereby, the camera can be normally photographed. Further, in the camera mounting area of the display substrate, an opening is provided only in the polarizing plate, and the camera is mounted on the side away from the organic electroluminescence display layer of the base material. Therefore, compared with the design of making holes in each film layer of the display substrate in the prior art, since the camera is not located in the recessed hole, the occurrence of the phenomenon that light rays are scattered and reflected at the edge of the opened hole can be avoided. Furthermore, the light leakage phenomenon in the camera mounting area can be avoided, and the shooting effect of the camera is ensured. Also, since the camera is not located in the recessed hole, after the camera is mounted, the phenomenon of uneven force does not occur in the camera mounting area. Thereby, the phenomenon that the display device generates black spots during display is avoided, and the display effect of the display substrate is ensured.

[0041] As shown in FIG. 6, an embodiment of the present disclosure further provides a display device including the display substrate in the above embodiment, and further including a camera 12 provided on the side away from the organic electroluminescence display layer 2 of the base material 1 in the display substrate and located in the camera mounting area 102.

[0042] In some embodiments, the display device further includes a heat dissipation layer 13 provided on a side of the organic electroluminescence display layer 2 of the base material 1 on the display substrate away from the organic electroluminescence display layer 2. A second opening 130 is formed in a region of the heat dissipation layer 13 corresponding to the camera mounting area 102 of the display substrate. A heat dissipation sponge or a metal heat dissipation material is used for the heat dissipation layer 13. The installation of the second opening 130 in the heat dissipation layer 13 can avoid the heat dissipation layer 13 from blocking the shooting light of the camera 12, thereby ensuring that the camera 12 can shoot normally.

[0043] In some embodiments, the display device further includes a third adhesive layer 14 provided in the second opening 130, and a fixing plate 15 provided on a side of the third adhesive layer 14 away from the base material 1 and whose orthographic projection on the base material 1 is located within the second opening 130. The camera 12 is fixed on the fixing plate 15, and the camera 12 is located on a side of the fixing plate 15 away from the display substrate. Here, a transparent adhesive is used for the third adhesive layer 14. A transparent glass plate is used for the fixing plate 15. The installation of the third adhesive layer 14 and the fixing plate 15 has almost no influence on the transmission of the shooting light of the camera 12, so it does not affect the normal shooting of the camera 12.

[0044] In some embodiments, the distance between the plate surface of the fixing plate 15 away from the base material 1 and the base material 1 is equal to the thickness of the heat dissipation layer 13. By providing it in this way, with respect to the camera mounting position shown in FIG. 2, the camera 12 can be prevented from being located in a recessed hole, so that the phenomenon of light scattering and reflection at the edge of the opened hole can be avoided. Furthermore, the phenomenon that the edge of the captured image of the camera 12 is blurred can be avoided, ensuring the shooting effect of the camera 12. Also, since the camera 12 is not located in a recessed hole, after the camera 12 is mounted, the phenomenon of uneven force does not occur in the camera mounting area 102, thereby avoiding the phenomenon that the display device generates black dots during display and ensuring the display effect of the display device.

[0045] In some embodiments, as shown in FIG. 7, the distance between the plate surface of the fixed plate 15 away from the base material 1 and the base material 1 is greater than the thickness of the heat dissipation layer 13. By providing it in this way, similarly to the camera mounting position shown in FIG. 2, the camera 12 can be prevented from being located in the recessed hole, so that the occurrence of the phenomenon that light rays are scattered and reflected at the edge of the opened hole can be avoided. Furthermore, the phenomenon that the edge of the captured image of the camera 12 is blurred can be avoided, ensuring the imaging effect of the camera 12. Also, since the camera 12 is not located in the recessed hole, after the camera 12 is mounted, the phenomenon of uneven force does not occur in the camera mounting area 102, thereby avoiding the phenomenon that the display device generates black dots during display and ensuring the display effect of the display device.

[0046] The display device according to the embodiment of the present disclosure can not only ensure the normal imaging of the camera by adopting the above display substrate, but also avoid the light leakage phenomenon in the camera mounting area, ensuring the imaging effect of the camera. Also, after the camera is mounted on this display device, the phenomenon of uneven force does not occur, thereby avoiding the phenomenon that the display device generates black dots during display and ensuring the display effect of the display device.

[0047] The display device according to the embodiment of the present disclosure may be any product or component having a display function such as an OLED panel, an OLED TV, a display, a mobile phone, a navigation device, etc.

[0048] It should be understood that the above embodiments are merely exemplary embodiments adopted to explain the principle of the present disclosure, and the present disclosure is not limited thereto. Those skilled in the art can make various modifications and improvements without departing from the spirit and essence of the present disclosure, and these modifications and improvements are also regarded as within the protection scope of the present disclosure.

Description of Reference Numerals

[0049] 1 Base material 2 Organic electroluminescence display layer 3 Touch layer 4 Polarizer 5 Cover Plate 6 First Adhesive Layer 7 Second Adhesive Layer 8 Pixel Driving Circuit 9 Insulating Layer 10 Package Layer 11 Light-Shielding Layer 12 Camera 13 Heat Dissipation Layer 14 Third Adhesive Layer 15 Fixed Plate 41 First Opening 101 Display Area 102 Camera Mounting Area

Claims

1. A display device comprising a substrate, an organic electroluminescence display layer, a touch layer, a polarizing plate, and a cover plate sequentially laminated on the substrate, wherein the organic electroluminescence display layer and the touch layer are adhered by a first adhesive layer, and the polarizing plate and the cover plate are adhered by a second adhesive layer, the display device having a display area and a camera mounting area, the display area surrounding the camera mounting area, a camera being mounted on a side of the substrate away from the organic electroluminescence display layer, and the display device further comprising a display substrate located within the camera mounting area, wherein at least a light-emitting layer is not provided in a region of the organic electroluminescence display layer corresponding to the camera mounting area, and a first opening is formed in a region of the polarizing plate corresponding to the camera mounting area, a camera provided on a side of the display substrate away from the organic electroluminescence display layer of the substrate and located within the camera mounting area, a heat dissipation layer provided on a side of the display substrate away from the organic electroluminescence display layer of the substrate, and a second opening is formed in a region of the display substrate corresponding to the camera mounting area, a third adhesive layer provided in the second opening, a fixing plate provided on a side of the third adhesive layer away from the substrate and the orthographic projection of which on the substrate is located within the second opening, further comprising, wherein the camera is fixed to the fixing plate and the camera is located on a side of the fixing plate away from the display substrate.

2. The display device according to claim 1, wherein the second adhesive layer fills the first opening and the surface of the second adhesive layer away from the polarizing plate is flat.

3. The display device according to claim 1, wherein a pixel driving circuit provided on the substrate is provided in a region of the organic electroluminescence display layer corresponding to the camera mounting area.

4. The display device according to claim 3, wherein the first adhesive layer is in contact with the pixel driving circuit in the camera mounting area and the surface of the first adhesive layer away from the organic electroluminescence display layer is flat.

5. The display device according to claim 1, wherein one or more insulating layers provided on the base material are provided in a region corresponding to the camera mounting area of the organic electroluminescence display layer.

6. The display device according to claim 5, wherein the first adhesive layer is in contact with the insulating layer in the camera mounting area, and the surface of the first adhesive layer on the side away from the organic electroluminescence display layer is flat.

7. The display device according to claim 1, further comprising a package layer provided between the organic electroluminescence display layer and the first adhesive layer for packaging the organic electroluminescence display layer.

8. The display device according to claim 1, wherein a light-shielding layer is provided on the cover plate on the side close to or away from the polarizing plate of the cover plate, and the orthographic projection of the light-shielding layer on the base material covers the edge of the camera mounting area.

9. The display device according to claim 1, wherein the base material, the touch layer, and the cover plate all transmit light.

10. The display device according to claim 1, wherein transparent adhesive materials are adopted for both the first adhesive layer and the second adhesive layer.

11. The display device according to claim 1, wherein the distance between the plate surface of the fixing plate away from the base material and the base material is equal to the thickness of the heat dissipation layer.

12. The display device according to claim 1, wherein the distance between the plate surface of the fixing plate away from the base material and the base material is greater than the thickness of the heat dissipation layer.

Images