CN219478461U - Display panel and display device - Google Patents

Abstract

The application discloses a display panel and display device belongs to and shows technical field. The display panel may include: a substrate, a light emitting device, an adhesive layer, and a support layer. After the adhesive layer with light reflection property is arranged between the supporting layer and the substrate, the threshold voltage of the active layer in the thin film transistor positioned in the light sensing area and the threshold voltage of the active layer in the thin film transistor positioned outside the light sensing area of the display panel can drift. Therefore, the threshold voltage of the active layer in each thin film transistor in the display panel can be ensured to drift, and the brightness of the photosensitive area in the display panel is basically consistent with the brightness of other areas, so that the probability of uneven brightness of the display panel can be effectively reduced, and the display effect of the display panel is better.

Description

Display panel and display device

Technical Field

The present disclosure relates to the field of display technologies, and in particular, to a display panel and a display device.

Background

Along with the development of technology, more and more display devices not only integrate display panels capable of realizing display functions, but also integrate different kinds of sensors, and the display devices can realize corresponding functions through the sensors.

For example, a fingerprint recognition area may be provided in the display device, and a fingerprint sensor may be integrated at the fingerprint recognition area, through which a fingerprint of a user is sensed. Thus, the display device can verify the user fingerprint sensed by the fingerprint sensor, and after the user fingerprint passes the verification, the display device can be unlocked.

In order to increase the screen ratio of the display device, it is necessary to provide the fingerprint sensor on the backlight side of the display panel (i.e., the side opposite to the display surface in the display panel). However, when the fingerprint sensor is disposed at the backlight side of the display panel, the display effect of the display panel may be affected.

Disclosure of Invention

The embodiment of the application provides a display panel and a display device. The problem that when fingerprint sensor sets up in display panel's backlight side, can influence display panel's display effect can be solved, technical scheme is as follows:

in one aspect, there is provided a display panel including: a substrate, a light emitting device, an adhesive layer, and a support layer;

the light emitting device is positioned on one side of the substrate;

the support layer is positioned on the other side of the substrate and is provided with first light-passing holes which are distributed in a photosensitive area of the display panel;

the bonding layer has light reflection, and the bonding layer is located between the substrate and the supporting layer, one side of the bonding layer with the substrate deviates from one side of the light emitting device bonds, the other side of the bonding layer with the supporting layer is close to one side of the substrate bonds, the bonding layer has the second light through hole, the orthographic projection of the second light through hole on the substrate has the overlapping region with the orthographic projection of the first light through hole on the substrate.

Optionally, the orthographic projection of the first light through hole on the substrate is located in the orthographic projection of the second light through hole on the substrate.

Optionally, the adhesive layer is a color adhesive tape with light reflection.

Optionally, the adhesive layer includes: a transparent gel, and a plurality of reflective particles dispersed within the transparent gel.

Optionally, the display panel further includes: and the foam layer is positioned between the supporting layer and the substrate, and is provided with a third light through hole, and the orthographic projection of the third light through hole on the substrate and the orthographic projection of the first light through hole on the substrate have an overlapping area.

Optionally, when the adhesive layer is a color adhesive tape, the adhesive layer and the foam layer are an integral structure.

Optionally, the display panel further includes: the packaging layer is positioned on one side of the light-emitting device, which is away from the substrate, and the metal touch layer is positioned on one side of the packaging layer, which is away from the substrate.

Optionally, the display panel further includes: and the protective layer is positioned on one side of the substrate, which is away from the light-emitting device, and one side of the bonding layer is bonded with one side of the protective layer, which is away from the substrate.

In another aspect, there is provided a display apparatus including: the display panel and the photosensitive element are arranged on one side opposite to the display surface of the display panel, and the photosensitive surface of the photosensitive element faces to the photosensitive area of the display panel.

Optionally, the photosensitive element includes: at least one of a fingerprint sensor, a light sensor, and a distance sensor.

The beneficial effects that technical scheme that this application embodiment provided include at least:

a display panel, comprising: a substrate, a light emitting device, an adhesive layer, and a support layer. After the adhesive layer with light reflection property is arranged between the supporting layer and the substrate, the brightness of the photosensitive area in the display panel is basically consistent with the brightness of other areas, so that the probability of uneven brightness of the display panel can be effectively reduced, and the display effect of the display panel is better. In addition, the embodiment of the application can effectively reduce the design cost of the display panel on the premise of ensuring the good display effect of the display panel.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a conventional film structure of a display device;

fig. 2 is a light path diagram of light emitted from a light emitting device of a display panel in the display apparatus shown in fig. 1;

fig. 3 is a schematic diagram of a film structure of a display panel according to an embodiment of the present disclosure;

fig. 4 is a light path diagram of a display panel in a photosensitive area according to an embodiment of the present application;

fig. 5 is a light path diagram of a display panel provided in an embodiment of the present application in other areas except a photosensitive area;

fig. 6 is a schematic diagram of a film structure of another display panel according to an embodiment of the present disclosure;

fig. 7 is a schematic film structure of another display panel according to an embodiment of the disclosure;

fig. 8 is a schematic diagram of a film structure of another display panel according to an embodiment of the disclosure;

fig. 9 is a schematic diagram of a film structure of a display device according to an embodiment of the present application.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

Referring to fig. 1, fig. 1 is a schematic diagram of a film structure of a display device in the related art. The display device may include: a display panel 01, and a fingerprint sensor 02 located on the backlight side of the display panel 01.

The display panel 01 may generally include: a substrate 001, and a light emitting device 002, a pixel driving circuit 003, and a support layer 004 which are provided over the substrate 001. Wherein, the light emitting device 002 and the pixel driving circuit 003 are both positioned on one side of the substrate 001, and the support layer 004 is positioned on the other side of the substrate 001. Here, the support layer 004 may be adhered to the side of the substrate 001 facing away from the light emitting device 002, typically by a black light absorbing tape.

The light emitting device 002 may be electrically connected to a pixel driving circuit 003, and the pixel driving circuit 003 is configured to drive the light emitting device 002 to emit light. The pixel driving circuit 003 may generally include: at least one thin film transistor, which may typically be a top gate thin film transistor. The light emitting device 002 may be a top emission type light emitting device, that is, the light emitting device 002 may emit light toward a side facing away from the substrate 001 under the driving of the pixel driving circuit 003.

The display panel 01 of the display device generally has a fingerprint recognition area a, and the fingerprint sensor 02 located on the backlight side of the display panel 01 may face the fingerprint recognition area a of the display panel 01. Again because the support layer 004 is opaque. Therefore, in order for the fingerprint sensor 02 to normally receive light reflected by the user's finger, an opening 004a needs to be provided in the support layer 004. Thus, after a user places a finger in the fingerprint identification area a, the light emitting device 002 in the fingerprint identification area a in the display panel 01 can emit light with higher brightness under the driving of the pixel driving circuit 003, the light can be irradiated on the finger of the user and reflected to the display panel 01 by the finger, and after the light can pass through each film layer in the display panel 01 and the opening 004a of the supporting layer 004, the light is emitted to the fingerprint sensor 02, so that the fingerprint sensor 02 can determine the fingerprint shape of the user according to the received light.

As shown in fig. 1, the display panel 01 generally further needs to include: the metal touch layer 005 located at one side of the light emitting device 002 away from the substrate 001 can enable the display device to have a touch function through the metal touch layer 005. Referring to fig. 2, fig. 2 is a light path diagram of light emitted from a light emitting device of a display panel in the display apparatus shown in fig. 1. When the light emitting devices 002 emit light to a side away from the substrate 001, a portion of the light emitted by each light emitting device 002 may be reflected back into the display panel 01 by the metal touch layer 005.

However, after the openings 004a are formed in the support layer 004, some of the light reflected back to the display panel 01 toward the openings 004a may be totally reflected at the exposed interfaces of the display panel 01 from the openings 004a, and the totally reflected light may illuminate the active layer 0031 in the thin film transistor. Thus, the active layer 0031 in the thin film transistor is irradiated by light, so that the threshold voltage of the thin film transistor is shifted, and the electrical performance of the thin film transistor is seriously affected. For the light reflected back to the display panel 01 to be directed to the other area except the hole 004a, since the supporting layer 004 is adhered to the side of the substrate 001 away from the light emitting device 002 by the black light absorbing tape, the light is absorbed by the light absorbing tape, so that the light is not reflected any more. For this reason, the threshold voltage of the thin film transistor located in the fingerprint recognition region a in the display panel 00 may drift, but the threshold voltage of the thin film transistor located in other regions in the display panel 00 may not drift, and thus the luminance of the fingerprint recognition region a in the display panel 00 may be different from the luminance of other regions after long-term use, resulting in a problem that the luminance is not uniform in the display panel 00.

Referring to fig. 3, fig. 3 is a schematic diagram of a film structure of a display panel according to an embodiment of the disclosure. The display panel 000 may include: a substrate 100, a light emitting device 200, an adhesive layer 300, and a support layer 400.

The light emitting device 200 in the display panel 000 may be located at one side of the substrate 100, and the support layer 400 in the display panel 000 may be located at the other side of the substrate 100. That is, the light emitting device 200 and the support layer 400 are respectively located at opposite sides of the substrate 100. Here, the support layer 400 in the display panel 000 may be a metal support layer. For example, the support layer 400 may be copper foil. By arranging the support layer 400 on the back of the display panel 000, heat generated when the light emitting device 200 in the display panel 000 emits light can be guaranteed to be timely transferred to the support layer 400, and heat is dissipated through the support layer 400, so that the working temperature of the light emitting device 200 is low, and the service life of the light emitting device 200 can be effectively prolonged.

The support layer 400 in the display panel 000 may have a first light passing hole 400a. In this application, the display panel 000 generally has a photosensitive area a, and the first light-transmitting holes 400a of the support layer 400 may be distributed in the photosensitive area a of the display panel 000. Here, the display panel 000 may be mated with a light sensing device, which may be disposed at a side opposite to the display surface of the display panel 000, and the light sensing surface of the light sensing device may face the first light passing hole 400a of the support layer 400. Thus, after receiving the external light, the light-sensing area a of the display panel 000 may emit the external light to the light-sensing element through the first light-passing hole 400a of the supporting layer 400, so that the light-sensing element performs a corresponding function through light sensing.

For example, in the case where the photosensitive element disposed outside the display panel 100 is a fingerprint sensor, the photosensitive area a of the display panel 000 is a fingerprint recognition area, and the received external light is: the light emitted from the light emitting device 200 is reflected back by the finger of the user. In the case where the photosensitive element disposed outside the display panel is a distance sensor, the photosensitive area a of the display panel 000 is an area for passing infrared rays, and the received external light is: infrared light reflected back by an external object is included in infrared light emitted from the distance sensor. In the case where the photosensitive element disposed outside the display panel is a light sensor, the photosensitive area a of the display panel 000 is an area for passing visible light, and the received external light is: ambient light in the external environment. The following embodiments are each schematically described taking the photosensitive area a of the display panel 000 as a fingerprint recognition area as an example.

The adhesive layer 300 in the display panel 000 may have light reflection properties, and the adhesive layer 300 may be positioned between the substrate 100 and the support layer 400. Here, one side of the adhesive layer 300 may be adhered to a side of the substrate 100 facing away from the light emitting device 200, and the other side of the adhesive layer 300 may be adhered to a side of the support layer 400 adjacent to the substrate 100. The support layer 400 may be adhered to a side of the substrate 100 facing away from the light emitting device 200 by the adhesive layer 300. Here, the adhesive layer 300 may have the second light passing hole 300a, and the front projection of the first light passing hole 400a in the support layer 400 on the substrate 100 may have an overlapping area with the front projection of the second light passing hole 300a of the adhesive layer 300 on the substrate 100. That is, the second light passing hole 300a of the adhesive layer 300 may communicate with the first light passing hole 400a of the support layer 400.

In this case, since the orthographic projection of the first light passing hole 400a on the substrate 100 in the support layer 400 may have an overlapping area with the orthographic projection of the second light passing hole 300a on the substrate 100. Therefore, when the display panel 000 performs fingerprint recognition, the light reflected by the user's finger may sequentially pass through the second light passing hole 300a and the first light passing hole 400a and then be directed to the fingerprint sensor. Thus, the probability that light rays emitted to the fingerprint sensor are blocked by the adhesive layer 300 can be guaranteed to be lower, so that the intensity of the light rays of the fingerprint sensor can be guaranteed to be higher, and the fingerprint of a user can be accurately determined by the fingerprint sensor.

In the present application, the display panel 000 may further include: the pixel driving circuit 500 is located at one side of the substrate 200 and electrically connected to the light emitting device 200. The pixel driving circuit 500 is used to drive the light emitting device 200 to emit light, and the pixel driving circuit 500 may be located at a side of the light emitting device 200 near the substrate 100. Alternatively, the pixel driving circuit 500 generally includes at least one thin film transistor, which may be a top gate thin film transistor. The number of light emitting devices 200 and the number of pixel driving circuits 500 in the display panel are generally plural, and the plural light emitting devices 200 are in one-to-one correspondence with the plural pixel driving circuits 500, and each light emitting device 200 is electrically connected to the corresponding pixel driving circuit 500.

Optionally, as shown in fig. 3, the display panel 000 typically further needs to include: the metal touch layer 600 located at the side of the light emitting device 200 facing away from the substrate 001 can enable the display panel to have a touch function through the metal touch layer 600. Since the light emitting device 200 may be a top emission type light emitting device, it emits light toward a side facing away from the substrate 100 under the driving of the pixel driving circuit 500. Therefore, among the light emitted from the light emitting device 200, there is a possibility that a part of the light may be reflected by the metal touch layer 600 back to the display panel 000.

In this case, referring to fig. 4, fig. 4 is a light path diagram of a display panel in a photosensitive area according to an embodiment of the present application. Among the light emitted from the light emitting device 200 located in the photosensitive region a in the display panel 000, a portion of the light is reflected by the metal touch layer 600 toward the first light passing hole 400a of the support layer 400, and a portion of the light emitted toward the first light passing hole 400a of the support layer 400 is totally reflected at the exposed interface of the display panel 000 from the first light passing hole 400a, and the totally reflected light may be irradiated to the active layer in the thin film transistor located in the photosensitive region a, such that the threshold voltage of the active layer in the thin film transistor located in the photosensitive region a may drift.

Referring to fig. 5, fig. 5 is a light path diagram of a display panel in other areas except for a photosensitive area according to an embodiment of the present disclosure. Among the light emitted from the light emitting device 200 located outside the light sensing region a in the display panel 000, there is also a portion of the light reflected toward the support layer 400 by the metal touch layer 600. Since the adhesive layer 300 disposed between the support layer 400 and the substrate 100 has light reflectivity, the light emitted to the support layer 400 may be reflected by the adhesive layer 300, so that the reflected light may also be irradiated to the active layer in the thin film transistor located outside the photosensitive region a, and the threshold voltage of the active layer in the thin film transistor located outside the photosensitive region a may drift.

In this way, after the adhesive layer 300 having light reflection properties is provided between the support layer 400 and the substrate 100, the threshold voltage of the active layer in the thin film transistor located in the light sensing region a in the display panel 000 and the threshold voltage of the active layer in the thin film transistor located outside the light sensing region can be shifted. In this way, the threshold voltage of the active layer in each thin film transistor in the display panel 000 can be ensured to drift, and the brightness of the photosensitive area A in the display panel 00 and the brightness of other areas can be ensured to be basically consistent, so that the probability of uneven brightness of the display panel 000 can be effectively reduced, and the display effect of the display panel 000 is better. In addition, in the embodiment of the present application, only the adhesive layer 300 between the support layer 400 and the substrate 100 is replaced, and other film structures in the display panel 000 are not adjusted, so that the design cost of the display panel 000 can be effectively reduced on the premise of ensuring a good display effect of the display panel 000.

As shown in fig. 5, in other regions of the display panel 000 outside the photosensitive region a, most of the light emitted to the support layer 400 may be reflected by the adhesive layer 300. As shown in fig. 4, in the photosensitive area a of the display panel 000, only a portion of the light emitted to the first light-passing hole 400a of the supporting layer 400 is totally reflected at the exposed interface of the display panel 000 from the first light-passing hole 400a, and other light is transmitted through the first light-passing hole 400a. For this reason, in the light sensing region a of the display panel 000, the intensity of the light emitted from the light emitting device 200 is lower toward the active layer of the thin film transistor after being reflected by the metal touch layer 400 and again reflected by the exposed interface of the display panel 000 from the first light passing hole 400 a; in the other regions of the display panel 000 except the photosensitive region a, the intensity of the light emitted from the light emitting device 200, which is reflected by the metal touch layer 400 and again by the adhesive layer 300, is high toward the active layer in the thin film transistor.

However, since the photosensitive area a of the display panel 000 is a fingerprint recognition area, the light emitting device 200 in the photosensitive area a needs to emit light with high brightness when the display panel 000 performs fingerprint recognition. These high-brightness light rays can be reflected by the finger or the metal touch layer 400, and can be reflected again by the interface exposed from the first light-passing hole 400a in the display panel 000. Therefore, when the display panel 000 performs fingerprint recognition, the intensity of light directed to the active layer in the thin film transistor is strong.

For this reason, it is possible to ensure that the light received by the active layer in the thin film transistor located in the photosensitive region a substantially coincides with the light received by the active layer in the thin film transistor located in the other region outside the photosensitive region a. In this way, it is possible to ensure that the degree of threshold voltage shift of the active layer in each thin film transistor in the display panel is the same, so that the brightness of the display panel 000 in the photosensitive region a is substantially identical to the brightness of the other regions after long-term use.

In summary, the display panel provided in the embodiment of the present application includes: a substrate, a light emitting device, an adhesive layer, and a support layer. After the adhesive layer with light reflection property is arranged between the supporting layer and the substrate, the threshold voltage of the active layer in the thin film transistor positioned in the light sensing area and the threshold voltage of the active layer in the thin film transistor positioned outside the light sensing area of the display panel can drift. Therefore, the threshold voltage of the active layer in each thin film transistor in the display panel can be ensured to drift, and the brightness of the photosensitive area in the display panel is basically consistent with the brightness of other areas, so that the probability of uneven brightness of the display panel can be effectively reduced, and the display effect of the display panel is better. In addition, the embodiment of the application only replaces the bonding layer between the supporting layer and the substrate, but does not adjust other film layer structures in the display panel, and can effectively reduce the design cost of the display panel on the premise of ensuring the good display effect of the display panel.

In the present application, there are a number of possible implementation manners of the structural form of the adhesive layer 300 in the display panel 000:

in one possible implementation, the adhesive layer 300 may be a colored tape having light reflection. Since the colored tape is capable of reflecting the same color as the color of such a colored tape. Therefore, when light is irradiated onto the color tape when the substrate 100 and the support layer 400 are bonded by the color tape, light having the same color as that of the color tape among the light irradiated onto the color tape can be reflected toward the thin film transistor in the pixel driving circuit 500. The colored tape may be, for example, an orange tape.

In another possible implementation, the adhesive layer 300 may include: a transparent colloid, and a plurality of reflective particles dispersed in the transparent colloid. The transparent colloid may enable the adhesive layer 300 to have enough adhesive capability, so that the adhesive layer 300 can be better adhered to the substrate 100 and the supporting layer 400, and the reflective particles dispersed in the transparent colloid may enable the adhesive layer 300 to have stronger reflectivity, so that after the light irradiates on the adhesive layer 300, the light can be reflected by the reflective particles in the adhesive layer 300 to the thin film transistor in the pixel driving circuit 500.

In the embodiment of the present application, please refer to fig. 6, fig. 6 is a schematic diagram of a film structure of another display panel provided in the embodiment of the present application. The orthographic projection of the first light through hole 400a in the support layer 400 on the substrate 100 may be located within the orthographic projection of the second light through hole 300a of the adhesive layer 300 on the substrate 100. That is, the orthographic projection of the support layer 400 on the substrate 100 may cover the orthographic projection of the adhesive layer 300 on the substrate 100. In this case, it is ensured that light directed to the fingerprint sensor is not blocked by the adhesive layer 300.

Optionally, referring to fig. 7, fig. 7 is a schematic film structure of another display panel according to an embodiment of the present application. The display panel 000 may further include: a foam layer 700 located between the support layer 400 and the substrate 100. Since the foam layer 700 has elasticity, the foam layer 700 may play a role of buffering and damping the display panel. Here, the foam layer 700 may have a third light passing hole 700a, and an orthographic projection of the third light passing hole 700a on the substrate 100 may have an overlapping area with an orthographic projection of the first light passing hole 400a of the support layer 400 on the substrate 100. That is, the third light passing hole 700a of the foam layer 700 may communicate with the first light passing hole 400a. In this case, when the display panel 000 performs fingerprint recognition, light reflected by the user's finger may pass through the second light passing hole 300a, the third light passing hole 700a, and the first light passing hole 400a in order and then be directed to the fingerprint sensor.

For example, as shown in fig. 7, a foam layer 700 may be located between the adhesive layer 300 and the support layer 400. Here, the foam layer 700 may be a foam with a single-sided adhesive layer, and the foam layer 700 may be disposed at a side facing away from the substrate 100. In this way, the side of the foam layer 700 facing away from the substrate 100 may be directly bonded to the support layer 400, and the side of the foam layer 700 adjacent to the substrate 100 may be bonded to the substrate 100 by the bonding layer 300.

When the adhesive layer 300 is a color tape, the adhesive layer 300 and the foam layer 700 may be integrally formed. In this way, the overall thickness of the display panel 000 can be effectively reduced. For example, the adhesive layer 300 and the foam layer 700 may be made as an elastic color composite tape, one side of which may be adhered to the substrate 100, and the other side of which may be adhered to the support layer 400. Thus, not only the overall thickness of the display panel 000 can be ensured to be low, but also the manufacturing process of the display panel can be simplified, thereby reducing the manufacturing cost of the display panel.

In the embodiment of the present application, please refer to fig. 8, fig. 8 is a schematic diagram of a film structure of another display panel provided in the embodiment of the present application. The display panel 000 may further include: the protective layer 800 on the side of the substrate 100 facing away from the light emitting device, and the side of the adhesive layer 300 may be adhered to the side of the protective layer 800 facing away from the substrate 100. Here, the protective layer 800 may protect a side of the substrate 100 facing away from the light emitting device 200, so that during the manufacturing process of the display panel 000, a side of the substrate 100 facing away from the light emitting device 200 may not be scratched, and further it may be ensured that water oxygen in an external environment may not erode the light emitting device 200 from the back surface of the display panel.

Optionally, as shown in fig. 8, the display panel 000 may further include: the pixel defining layer 900 is located on a side of the pixel driving circuit 500 facing away from the substrate 100, and the pixel defining layer 900 is configured to define a plurality of pixel regions in the display panel 000, wherein each pixel region may have one light emitting device 200 distributed therein. In the present application, the Light Emitting device 200 in the display panel 000 may be an Organic Light-Emitting Diode (OLED) Light Emitting device. By way of example, the light emitting device 200 may include an anode 201, a light emitting layer 202, and a cathode 203, which are stacked. Among them, the light emitting device 200 may be electrically connected to the pixel driving circuit 500 through the anode 201. The anode 201 in the light emitting device 200 may be a metal electrode having light reflection properties, and the cathode 202 may be a transparent electrode having light transmission properties. In this way, when the pixel driving circuit 500 drives the light emitting device 200 to emit light, the light emitting device 200 may emit light toward a side facing away from the substrate 100.

In an embodiment of the present application, as shown in fig. 8, the display panel 000 may further include: the encapsulation layer 1000 is located on the side of the light emitting device 200 facing away from the substrate 100. The encapsulation layer 1000 is used for encapsulating the light emitting device 200, so as to prevent water and oxygen in the external environment from entering the light emitting device 200, thereby prolonging the service life of the light emitting device 200. Here, the metal touch layer 600 in the display panel 000 may be located at a side of the encapsulation layer 1000 facing away from the substrate 100.

Optionally, as shown in fig. 8, the display panel 000 may further include: a first buffer layer 110 and a second buffer layer 120 between the pixel driving circuit 500 and the substrate 100. Wherein the second buffer layer 120 is closer to the substrate 100 than the first buffer layer 110. The first buffer layer 110 may serve to balance charges and currents in the display panel 000, and the second buffer layer 120 may serve to prevent oxygen and water vapor pairs in the external environment from entering the display panel 000.

In the present application, the substrate 100 may be made of a double layer organic material, where the organic material may be a flexible material. In this way, the substrate 100 can be ensured to have better flexibility, so that the display panel 000 has better flexibility, and further the display panel 000 can be ensured to be integrated in a curved display device or a folded display device later.

In the above embodiments, the substrate 100 of the display panel 000 has two organic layers as an example. In other possible implementations, the substrate 100 in the display panel 000 may have multiple organic layers. The embodiments of the present application are not limited in this regard.

In summary, the display panel provided in the embodiment of the present application includes: a substrate, a light emitting device, an adhesive layer, and a support layer. After the adhesive layer with light reflection property is arranged between the supporting layer and the substrate, the threshold voltage of the active layer in each thin film transistor in the display panel can be ensured to drift, and further the brightness of the photosensitive area in the display panel is ensured to be basically consistent with the brightness of other areas, so that the probability of uneven brightness of the display panel can be effectively reduced, and the display effect of the display panel is better. In addition, the embodiment of the application only replaces the bonding layer between the supporting layer and the substrate, but does not adjust other film layer structures in the display panel, and can effectively reduce the design cost of the display panel on the premise of ensuring the good display effect of the display panel.

The embodiment of the application also provides a display device. Display device the display device may include the display device may be: electronic paper, mobile phone, tablet computer, television, display, notebook computer, digital photo frame, navigator or any product or component with display function such as a wearable device.

Referring to fig. 9, fig. 9 is a schematic diagram of a film structure of a display device according to an embodiment of the disclosure. The display device may include: a display panel 000 and a photosensitive element 010. The display panel 000 may be the display panel 000 shown in fig. 3, 6, 7, or 8. The photosensitive element 010 may be located at a side opposite to the display surface of the display panel 000, and the photosensitive surface of the photosensitive element 010 may face the photosensitive area a of the display panel.

For example, the front projection of the photosensitive element 010 onto the display panel 000 may be located within the opening 400a in the display panel 000. In this way, the photosensitive element 010 can sense light through the opening 400a in the display panel 000, so that the display device can realize a corresponding function.

In this application, the photosensitive element 010 may include: at least one of a fingerprint sensor, a light sensor, and a distance sensor.

For example, when the photosensitive element 010 is a fingerprint sensor, the light reflected by the finger of the user may be emitted to the photosensitive element 010 through the opening 400a, and the photosensitive element 010 may recognize the fingerprint of the user after receiving the light reflected by the finger of the user.

When the photosensitive element 010 is a distance sensor, the photosensitive element 010 can emit infrared light to the aperture 400a in the display panel 000, and the infrared light can be displayed outside the panel 000 through the aperture 400a. The infrared light may be reflected back to the distance sensor 010 by an external object (e.g., a human face) after passing through the display panel 000. Thus, the photosensitive element 010 can determine the distance from the external object based on the time of emitting infrared light and the time of receiving infrared light.

When the photosensitive element 010 is a light sensor, the photosensitive element 010 can receive the ambient light emitted from the outside and can detect the intensity of the ambient light.

It is noted that in the drawings, the size of layers and regions may be exaggerated for clarity of illustration. Moreover, it will be understood that when an element or layer is referred to as being "on" another element or layer, it can be directly on the other element or intervening layers may be present. In addition, it will be understood that when an element or layer is referred to as being "under" another element or layer, it can be directly under the other element or intervening layers or elements may be present. In addition, it will be understood that when a layer or element is referred to as being "between" two layers or elements, it can be the only layer between the two layers or elements, or more than one intervening layer or element may also be present. Like reference numerals refer to like elements throughout.

In this application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" refers to two or more, unless explicitly defined otherwise.

The foregoing description of the preferred embodiments is merely exemplary in nature and is in no way intended to limit the utility model, since it is intended that all modifications, equivalents, improvements, etc. that fall within the spirit and scope of the utility model.

Claims (10)

1. A display panel, comprising: a substrate (100), a light emitting device (200), an adhesive layer (300), and a support layer (400);

the light emitting device (200) is located at one side of the substrate (100);

the supporting layer (400) is positioned on the other side of the substrate (100), and the supporting layer (400) is provided with first light-passing holes (400 a), and the first light-passing holes (400 a) are distributed in a light-sensing area (A) of the display panel (000);

the bonding layer (300) has light reflection, the bonding layer (300) is located between the substrate (100) and the supporting layer (400), one side of the bonding layer (300) is bonded with one side of the substrate (100) away from the light emitting device (200), the other side of the bonding layer (300) is bonded with one side of the supporting layer (400) close to the substrate (100), the bonding layer (300) is provided with a second light through hole (300 a), and an overlapping area exists between the orthographic projection of the second light through hole (300 a) on the substrate (100) and the orthographic projection of the first light through hole (400 a) on the substrate (100).

2. The display panel according to claim 1, characterized in that the orthographic projection of the first light-passing hole (400 a) on the substrate (100) is located within the orthographic projection of the second light-passing hole (300 a) on the substrate (100).

3. The display panel according to claim 1, wherein the adhesive layer (300) is a colored adhesive tape having light reflection.

4. The display panel according to claim 1, wherein the adhesive layer (300) includes: a transparent gel, and a plurality of reflective particles dispersed within the transparent gel.

5. The display panel according to any one of claims 1 to 4, wherein the display panel (000) further comprises: and a foam layer (700) positioned between the support layer (400) and the substrate (100), wherein the foam layer (700) is provided with a third light-through hole (700 a), and the orthographic projection of the third light-through hole (700 a) on the substrate (100) and the orthographic projection of the first light-through hole (400 a) on the substrate (100) have overlapping areas.

6. The display panel according to claim 5, wherein when the adhesive layer (300) is a color tape, the adhesive layer (300) and the foam layer (700) are of a unitary structure.

7. The display panel according to any one of claims 1 to 4, wherein the display panel (000) further comprises: an encapsulation layer (1000) at a side of the light emitting device (200) facing away from the substrate (100), and a metal touch layer (600) at a side of the encapsulation layer (1000) facing away from the substrate (100).

8. The display panel according to any one of claims 1 to 4, wherein the display panel (000) further comprises: and a protective layer (800) positioned on one side of the substrate (100) away from the light emitting device (200), wherein one side of the bonding layer (300) is bonded with one side of the protective layer (800) away from the substrate (100).

9. A display device, comprising: the display panel (000) and the photosensitive element (010) according to any of claims 1 to 8, the photosensitive element (010) being located on a side opposite to a display surface of the display panel (000), the photosensitive surface of the photosensitive element (010) being directed towards a photosensitive area (a) of the display panel.

10. The display device according to claim 9, wherein the photosensitive element (010) includes: at least one of a fingerprint sensor, a light sensor, and a distance sensor.