Photosensitive display panel and photosensitive display device

Abstract

The utility model discloses a photosensitive display panel and a photosensitive display device. The photosensitive display panel includes: a display area, a wiring area surrounding the display area, and a bonding area located on a side of the wiring area away from the display area; a display panel, a packaging layer, and a photosensitive layer; the packaging layer is arranged on the surface of the light-emitting side of the display panel; the photosensitive layer is arranged on the surface of the packaging layer away from the display panel in a preset pattern; wherein the photosensitive layer is electrically connected to a driving chip in the bonding area. The technical solution of the embodiment of the utility model is conducive to improving the sensitivity of the photosensitive display panel in identifying the brightness of ambient light, improving the integrated structure performance of the photosensitive display panel, and improving the aesthetics of the screen.

Description

Technical Field

[0001] The utility model relates to the field of display technology, and in particular to a photosensitive display panel and a photosensitive display device. Background Art

[0002] Currently, display devices such as watches, mobile phones, tablets and monitors on the market all use light sensing modules to assist the screen in adjusting the display brightness to adapt to the ambient light during use.

[0003] However, since the light-receiving area of ​​the light-sensing module is small and easily blocked, the light-sensing module cannot accurately identify the brightness of the ambient light and cannot accurately adjust the brightness of the screen, resulting in a poor user experience. In addition, when using an ambient light sensor (ALS) module as a light-sensing module, it is necessary to set a hole in the entire machine body or screen to bury the ALS module, which will affect the performance of the entire machine's integrated structure and the aesthetics of the screen. Utility Model Content

[0004] The utility model provides a photosensitive display panel and a photosensitive display device, which can accurately identify the brightness of ambient light, thereby accurately adjusting the luminous brightness of the display panel and improving the aesthetics of the screen.

[0005] According to one aspect of the present invention, a photosensitive display panel is provided, comprising:

[0006] A display area, a wiring area surrounding the display area, and a bonding area located on a side of the wiring area away from the display area;

[0007] Display panel;

[0008] An encapsulation layer, the encapsulation layer being disposed on a surface of the light-emitting side of the display panel;

[0009] A photosensitive layer is disposed in a preset pattern on the entire surface of the packaging layer on a side away from the display panel; wherein the photosensitive layer is electrically connected to the driving chip in the bonding area.

[0010] Optionally, the display panel includes a light-emitting layer, the light-emitting layer includes a plurality of sub-pixels, and a pixel definition layer is provided between two adjacent sub-pixels;

[0011] The photosensitive layer includes a first photosensitive portion, the orthographic projection of the first photosensitive portion on the horizontal plane does not overlap with the orthographic projection of each sub-pixel on the horizontal plane, and the orthographic projection of the first photosensitive portion on the horizontal plane at least partially overlaps with the orthographic projection of the pixel definition layer on the horizontal plane.

[0012] Optionally, the photosensitive layer also includes a second photosensitive portion, which is arranged in the same layer as the first photosensitive portion, and the orthographic projection of the second photosensitive portion on the horizontal plane does not overlap with the orthographic projection of the first photosensitive portion on the horizontal plane, and the orthographic projection of the second photosensitive portion on the horizontal plane does not overlap with the orthographic projection of each sub-pixel on the horizontal plane.

[0013] Optionally, the photosensitive material of the second photosensitive portion is different from the photosensitive material of the first photosensitive portion.

[0014] Optionally, the first photosensitive portion or the second photosensitive portion includes any one of silicon, germanium, lead sulfide and indium gallium arsenide.

[0015] Optionally, the encapsulation layer includes glass or a thin film encapsulation layer; the thin film encapsulation layer includes an organic encapsulation layer and an inorganic encapsulation layer that are stacked.

[0016] Optionally, the photosensitive display panel further includes: a touch control component;

[0017] The touch control component is arranged between the packaging layer and the photosensitive layer; the touch control component includes a first protective layer, an electrode layer and a second protective layer which are stacked.

[0018] Optionally, an orthographic projection of the photosensitive layer on a horizontal plane at least partially overlaps with an orthographic projection of the electrode layer on a horizontal plane.

[0019] Optionally, the preset pattern of the photosensitive layer is the same as a pattern of the electrode layer.

[0020] According to another aspect of the present invention, a photosensitive display device is provided, comprising the photosensitive display panel as described in any embodiment of the first aspect.

[0021] The photosensitive display panel provided by the embodiment of the utility model is provided with a photosensitive layer on the surface of the side of the packaging layer away from the display panel by thin film deposition, so that the entire surface of the photosensitive layer is distributed in various places of the display panel, increasing the light receiving area of ​​the photosensitive layer, which is conducive to improving the sensitivity of the photosensitive display panel to identify the brightness of ambient light, and can effectively improve the situation where the ALS module is blocked. In addition, the photosensitive layer is formed on the surface of the packaging layer by thin film deposition, and there is no need to open a hole in the display panel, which is conducive to improving the integrated structure performance of the photosensitive display panel and improving the aesthetics of the screen.

[0022] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present utility model, nor are they intended to limit the scope of the present utility model. Other features of the present utility model will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 It is a schematic cross-sectional structure diagram of a photosensitive display panel provided according to an embodiment of the utility model;

[0025] Figure 2 is a schematic cross-sectional structure diagram of another photosensitive display panel provided according to an embodiment of the utility model;

[0026] Figure 3 is a schematic cross-sectional structure diagram of another photosensitive display panel provided according to an embodiment of the utility model;

[0027] Figure 4 is a schematic cross-sectional structure diagram of another photosensitive display panel provided according to an embodiment of the utility model;

[0028] Figure 5 is a schematic cross-sectional structure diagram of another photosensitive display panel provided according to an embodiment of the utility model;

[0029] Figure 6 It is a schematic diagram of a photosensitive display device provided according to an embodiment of the utility model. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0031] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0032] An embodiment of the utility model provides a photosensitive display panel. Figure 1 The schematic diagram of the cross-sectional structure of a photosensitive display panel provided by the embodiment of the utility model. The photosensitive display panel 00 comprises: a display area 01, a wiring area 02 surrounding the display area 01, and a bonding area 03 located on the side of the wiring area 02 away from the display area 01. Figure 1 As shown, the photosensitive display panel 00 includes: a display panel 10 , an encapsulation layer 20 and a photosensitive layer 30 .

[0033] The encapsulation layer 20 is disposed on the light-emitting side of the display panel 10 ; the photosensitive layer 30 is disposed in a preset pattern on the entire surface of the encapsulation layer 20 away from the display panel 10 ; wherein the photosensitive layer 30 is electrically connected to the driving chip in the bonding area 03 .

[0034] For example, the central area of ​​the photosensitive display panel 00 is the display area 01, the area outside and surrounding the display area 01 is the wiring area 02, and the position of the wiring area 02 close to the lower frame of the photosensitive display panel 00 is the bonding area 03. The bonding area 03 is provided with a driver chip, which is used to electrically connect with each driving wiring led out of the wiring area 02, so that the driver chip can control each sub-pixel in the photosensitive display panel 00 to emit light and turn off through the driving wiring. It should be noted that the driver chip is not in the bonding area. Figure 1 Shown in.

[0035] An encapsulation layer 20 is provided on the surface of the light-emitting side of the display panel 10, and the display panel 10 is protected by the encapsulation layer 20 to prevent water and oxygen in the outside air from entering the display panel 10, thereby damaging the luminous sub-pixels in the display panel 10. A photosensitive layer 30 is provided on the side of the encapsulation layer 20 away from the display panel 10. The photosensitive layer 30 can be disposed on the entire surface of the encapsulation layer 20 by a thin film deposition method, and the thin film deposited on the entire surface is patterned to obtain a photosensitive layer 30 with a preset pattern. The photosensitive layer 30 is electrically connected to the driver chip in the bonding area 03, so that the ambient light signal obtained by the photosensitive layer 30 is transmitted to the driver chip, so that the driver chip can control the luminous brightness of each sub-pixel in the display panel 10 according to the ambient light signal, thereby realizing accurate adjustment of the screen brightness.

[0036] Compared with the related art of setting up an ALS module by opening a hole in the display panel to identify the ambient light brightness, the photosensitive display panel 00 provided by the embodiment of the utility model deposits the entire surface of the photosensitive layer 30 on the surface of the encapsulation layer 20 by thin film deposition, thereby increasing the distribution area of ​​the photosensitive layer 30 on the display panel 10, thereby increasing the light receiving area of ​​the photosensitive layer 30, which is conducive to improving the sensitivity of identifying the ambient light brightness and can effectively improve the situation where the ALS module is blocked. In addition, the photosensitive layer 30 is formed by thin film deposition, and there is no need to open a hole in the display panel, thereby effectively improving the integrated structure performance of the photosensitive display panel and improving the aesthetics of the screen.

[0037] The photosensitive display panel 00 provided by the embodiment of the utility model is provided with a photosensitive layer 30 on the surface of the side of the packaging layer 20 away from the display panel 10 by thin film deposition, so that the entire surface of the photosensitive layer 30 is distributed in various places of the display panel 10, and the light receiving area of ​​the photosensitive layer 30 is increased, which is conducive to improving the sensitivity of the photosensitive display panel 00 in identifying the brightness of ambient light, and can effectively improve the situation where the ALS module is blocked. In addition, the photosensitive layer 30 is formed on the surface of the packaging layer 20 by thin film deposition, and there is no need to open a hole in the display panel 10, which is conducive to improving the integrated structure performance of the photosensitive display panel and improving the aesthetics of the screen.

[0038] Optionally, Figure 2 FIG. 1 is a cross-sectional structural diagram of another photosensitive display panel provided by an embodiment of the present utility model. Figure 2 As shown, the display panel 10 includes a light emitting layer 11 , the light emitting layer 11 includes a plurality of sub-pixels 111 , and a pixel definition layer 112 is disposed between two adjacent sub-pixels 111 .

[0039] The photosensitive layer 30 includes a first photosensitive portion 31 , the orthographic projection of the first photosensitive portion 31 on the horizontal plane does not overlap with the orthographic projection of each sub-pixel 111 on the horizontal plane, and the orthographic projection of the first photosensitive portion 31 on the horizontal plane at least partially overlaps with the orthographic projection of the pixel definition layer 112 on the horizontal plane.

[0040] The display panel 10 is provided with a light-emitting layer 11, and the light-emitting layer 11 includes a plurality of sub-pixels 111 distributed in a certain arrangement. Exemplarily, the plurality of sub-pixels 111 may be arranged in an array, or in a diamond arrangement or other arrangement, which is not limited here. A pixel definition layer 112 is provided in the same layer as the light-emitting layer 11, and a pixel definition layer 112 is provided between each two adjacent sub-pixels 111. The first photosensitive portion 31 in the photosensitive layer 30 has a certain preset pattern, and its orthographic projection on the horizontal plane can avoid the orthographic projection of each sub-pixel 111 in the light-emitting layer 11 on the horizontal plane, that is, the orthographic projection of the first photosensitive portion 31 on the horizontal plane does not overlap with the orthographic projection of each sub-pixel 111 on the horizontal plane. The orthographic projection of the first photosensitive portion 31 on the horizontal plane may partially overlap with the orthographic projection of the pixel definition layer 112 on the horizontal plane between each two adjacent sub-pixels 111, or may completely overlap with the orthographic projection of the pixel definition layer 112 on the horizontal plane, which is not limited here. That is, the orthographic projection of the position of the first photosensitive portion 31 set in a preset pattern on the horizontal plane does not block the orthographic projection of the sub-pixel 111 on the horizontal plane. By setting the first photosensitive portion 31 in this way, the first photosensitive portion 31 can avoid the light emitting position of each sub-pixel 111, so that the set first photosensitive portion 31 will not affect the display brightness of the display panel 10, and can accurately identify the brightness of ambient light of a specific wavelength.

[0041] Optionally, Figure 3 FIG. 1 is a cross-sectional structural diagram of another photosensitive display panel provided by an embodiment of the present utility model. Figure 3 As shown, the photosensitive layer 30 also includes a second photosensitive portion 32, and the second photosensitive portion 32 is arranged in the same layer as the first photosensitive portion 31, and the orthographic projection of the second photosensitive portion 32 on the horizontal plane does not overlap with the orthographic projection of the first photosensitive portion 31 on the horizontal plane, and the orthographic projection of the second photosensitive portion 32 on the horizontal plane does not overlap with the orthographic projection of each sub-pixel 111 on the horizontal plane.

[0042] Specifically, the photosensitive layer 30 may further include a second photosensitive portion 32, which is arranged in the same layer as the first photosensitive portion 31, and the orthographic projection of the second photosensitive portion 32 on the horizontal plane corresponds to different positions of the display panel 10 with the orthographic projection of the first photosensitive portion 31 on the horizontal plane, that is, the orthographic projection of the second photosensitive portion 32 on the horizontal plane does not overlap with the orthographic projection of the first photosensitive portion 31 on the horizontal plane. Exemplarily, the photosensitive material of the second photosensitive portion 32 is different from the photosensitive material of the first photosensitive portion 31, that is, two different photosensitive materials can be arranged in the same layer in the photosensitive layer 30 to sense ambient light of different wavelengths. Exemplarily, the first photosensitive portion 31 or the second photosensitive portion 32 includes any one of silicon, germanium, lead sulfide and gallium indium arsenide. For example, the photosensitive wavelength range of silicon material is 190-1100nm, the photosensitive wavelength range of germanium material is 400-1700nm, the photosensitive wavelength range of lead sulfide material is 800-2600nm, and the photosensitive wavelength range of gallium indium arsenide material is 1000-3500nm. In other words, the first photosensitive portion 31 and the second photosensitive portion 32 with different photosensitive materials can be respectively set at the positions of the pixels at different positions of the display panel 10 corresponding to the positions of the photosensitive layer 30, so that the brightness of ambient light of different wavelengths can be recognized at different positions of the photosensitive display panel 00, which is conducive to improving the recognition accuracy of the brightness of ambient light by the photosensitive display panel 00.

[0043] It should be noted that the first photosensitive portion 31 and the second photosensitive portion 32 provided in the photosensitive layer 30 with different photosensitive materials provided in this embodiment are not a limitation to the photosensitive display panel 00. Multiple photosensitive materials can also be provided in the same layer to form the photosensitive layer 30, which are all included in the protection scope of this embodiment.

[0044] Optionally, Figure 4 is a schematic cross-sectional structure diagram of another photosensitive display panel provided by an embodiment of the utility model. Figure 5 FIG. 1 is a cross-sectional structural diagram of another photosensitive display panel provided by an embodiment of the present utility model. Figure 4 and Figure 5 The encapsulation layer 20 includes glass 21 or a thin film encapsulation layer 22; the thin film encapsulation layer 22 includes an organic encapsulation layer 221 and an inorganic encapsulation layer 222 which are stacked.

[0045] For example, Figure 4 The glass 21 is used as the encapsulation layer 20 in the photosensitive display panel. Figure 4 The photosensitive display panel shown is packaged using hard screen packaging technology. Figure 5 The thin film encapsulation layer 22 is used as the encapsulation layer 20 in the photosensitive display panel. Figure 5 The photosensitive display panel shown is obtained by using thin film encapsulation technology.

[0046] The thin film encapsulation layer 22 includes an organic encapsulation layer 221 and an inorganic encapsulation layer 222 close to the display panel 10. For example, the organic encapsulation layer 221 can be formed by coating with organic ink, and at least one isolation column 223 is provided on the side of the bonding area 03 close to the wiring area 02 to prevent the ink from overflowing to the bonding area 03. Figure 5 The case where two isolation columns 223 are provided is shown, which is not limited here. The inorganic encapsulation layer 222 can be prepared by chemical vapor deposition using inorganic materials, and covers the surface of the organic encapsulation layer 221 and the isolation column 223. Since the compactness of organic materials is poor and the compactness of inorganic materials is good, covering the surface of the organic encapsulation layer 221 with an inorganic encapsulation layer 222 can effectively improve the encapsulation effect and protect the display panel from the influence of water and oxygen in the outside air.

[0047] Optionally, based on the above embodiments, continue to refer to Figure 4 and Figure 5 The photosensitive display panel also includes: a touch control component 40.

[0048] The touch control component 40 is disposed between the encapsulation layer 20 and the photosensitive layer 30 ; the touch control component 40 includes a first protective layer 41 , an electrode layer 42 , and a second protective layer 43 which are stacked.

[0049] Exemplarily, a touch control component 40 is provided between the encapsulation layer 20 and the photosensitive layer 30, so that the photosensitive display panel can realize a touch display function. A first protective layer 41, an electrode layer 42 and a second protective layer 43 are stacked in the touch control component 40. The electrode layer 42 is made of a conductive material, for example, a metal material or indium tin oxide. The electrode layer 42 is provided with a touch control circuit, and the touch control circuit is arranged in a certain pattern. The first protective layer 41 can be formed by the whole-surface deposition of an inorganic material, which is not limited here, so that the electrode layer 42 is prepared on the surface of the first protective layer 41. The second protective layer 43 can be formed by the whole-surface deposition of an organic material or an inorganic material, which is not limited here, so as to protect the formed electrode layer 42. Exemplarily, see Figure 5 The photosensitive display panel is made by thin film encapsulation technology, wherein the first protective layer 41 can flatten the surface of the encapsulation layer 20 to form an electrode layer 42; a support column 44 is arranged on the same layer as the electrode layer 42, and a second protective layer 43 covers the surface of the electrode layer 42 and the support column 44. Figure 4 The photosensitive display panel shown is prepared using hard screen packaging technology, wherein the first protective layer 41 and the second protective layer 43 can be made of silicon nitride (SiNx) material, and the electrode layer 42 also includes touch circuits arranged in a certain pattern. It should be noted that Figure 4The positional arrangement relationship of each film layer in the touch control component 40 is only schematically shown, and the arrangement of the electrode layer 42 in a specific pattern is not shown.

[0050] Optionally, based on the above embodiments, the orthographic projection of the photosensitive layer 30 on the horizontal plane and the orthographic projection of the electrode layer 42 on the horizontal plane at least partially overlap.

[0051] For example, taking a photosensitive display panel prepared by thin film encapsulation technology as an example, since the photosensitive layer 30 and the electrode layer 42 are arranged in a certain pattern, and the photosensitive layer 30 and the electrode layer 42 can avoid the position of each sub-pixel in the display panel 10 in the vertical direction, it is set that there is at least partial overlap between the orthographic projection of the photosensitive layer 30 on the horizontal plane and the orthographic projection of the electrode layer 42 on the horizontal plane, so that the photosensitive layer 30 with a photosensitivity function and the electrode layer 42 with a touch function will not affect the display brightness of the sub-pixel, thereby ensuring that the photosensitive display panel has a good display effect.

[0052] Optionally, based on the above embodiments, continue to refer to Figure 5 , the preset pattern of the photosensitive layer 30 is the same as the pattern of the electrode layer 42.

[0053] Exemplarily, the same mask can be used to sequentially prepare the electrode layer 42 and the photosensitive layer 30, so that the preset pattern of the photosensitive layer 30 is the same as the pattern of the electrode layer 42 in the touch component 40. This can reduce the number of masks used while ensuring that neither the photosensitive layer 30 nor the electrode layer 42 blocks the sub-pixels, which is beneficial in reducing the preparation cost of the photosensitive display panel.

[0054] The embodiment of the utility model also provides a photosensitive display device. Figure 6 Schematic diagram of a photosensitive display device provided by an embodiment of the utility model. Figure 6 As shown, the photosensitive display device includes the photosensitive display panel provided by any of the above embodiments, and the photosensitive display panel can be a mobile phone panel, etc. Among them, in the photosensitive display panel in the photosensitive display device, the photosensitive layer is arranged on the surface of the side of the packaging layer away from the display panel, and is electrically connected to the driving chip in the bonding area, so as to increase the light receiving area of ​​the photosensitive display panel, effectively improve the situation where the ALS module used in the related technology is blocked, and is conducive to improving the sensitivity of the photosensitive display panel to identify the brightness of ambient light. And by setting the photosensitive layer on the whole surface, there is no need to open holes in the display panel, which is conducive to improving the integrated structure performance of the photosensitive display panel and improving the aesthetics of the screen.

[0055] The above specific implementations do not constitute a limitation on the protection scope of the present utility model. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A photosensitive display panel, characterized in that: include: A display area, a wiring area surrounding the display area, and a bonding area located on a side of the wiring area away from the display area; Display panel; An encapsulation layer, the encapsulation layer being disposed on a surface of the light-emitting side of the display panel; A photosensitive layer is disposed in a preset pattern on the entire surface of the packaging layer on a side away from the display panel; wherein the photosensitive layer is electrically connected to the driving chip in the bonding area.

2. The photosensitive display panel according to claim 1, characterized in that: The display panel comprises a light-emitting layer, the light-emitting layer comprises a plurality of sub-pixels, and a pixel definition layer is arranged between two adjacent sub-pixels; The photosensitive layer includes a first photosensitive portion, the orthographic projection of the first photosensitive portion on the horizontal plane does not overlap with the orthographic projection of each sub-pixel on the horizontal plane, and the orthographic projection of the first photosensitive portion on the horizontal plane at least partially overlaps with the orthographic projection of the pixel definition layer on the horizontal plane.

3. The photosensitive display panel according to claim 2, characterized in that: The photosensitive layer also includes a second photosensitive portion, which is arranged on the same layer as the first photosensitive portion, and the orthographic projection of the second photosensitive portion on the horizontal plane does not overlap with the orthographic projection of the first photosensitive portion on the horizontal plane, and the orthographic projection of the second photosensitive portion on the horizontal plane does not overlap with the orthographic projection of each of the sub-pixels on the horizontal plane.

4. The photosensitive display panel according to claim 3, characterized in that: The photosensitive material of the second photosensitive portion is different from the photosensitive material of the first photosensitive portion.

5. The photosensitive display panel according to claim 4, characterized in that: The first photosensitive portion or the second photosensitive portion includes any one of silicon, germanium, lead sulfide and indium gallium arsenide.

6. The photosensitive display panel according to claim 1, characterized in that: The encapsulation layer comprises a glass or thin film encapsulation layer; the thin film encapsulation layer comprises an organic encapsulation layer and an inorganic encapsulation layer which are stacked.

7. The photosensitive display panel according to claim 6, characterized in that: Also includes: Touch components; The touch control component is arranged between the packaging layer and the photosensitive layer; the touch control component includes a first protective layer, an electrode layer and a second protective layer which are stacked.

8. The photosensitive display panel according to claim 7, characterized in that: The orthographic projection of the photosensitive layer on the horizontal plane and the orthographic projection of the electrode layer on the horizontal plane at least partially overlap.

9. The photosensitive display panel according to claim 7, characterized in that: The preset pattern of the photosensitive layer is the same as the pattern of the electrode layer.

10. A photosensitive display device, characterized in that: Comprising the photosensitive display panel as described in any one of claims 1-9.

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