Display panel and display device

Abstract

The embodiment of the invention provides a display panel and a display device. The display panel comprises a substrate, a pixel definition layer, a light-emitting layer and a photosensitive layer, the pixel definition layer is arranged on one side of the substrate, the pixel definition layer comprises a first pixel definition part and a second pixel definition part, the first pixel definition part is encircled to form a first opening, and the second pixel definition part is encircled to form a second opening; the light-emitting layer comprises a light-emitting unit located in the first opening; the photosensitive layer comprises a photosensitive unit located in the second opening; wherein the second pixel limiting part is located on the side, away from the substrate, of the first pixel limiting part, or the second pixel limiting part is located on the side, close to the substrate, of the first pixel limiting part. The light-emitting unit and the light-sensing unit are arranged on different layers, so that large-angle light or transverse light of the light-emitting unit can be reduced to the light-sensing unit, and the light-sensing precision of the light-sensing unit is improved.

Description

Technical Field

[0001] The present application relates to the technical field of display devices, and in particular to a display panel and a display device. Background Art

[0002] Organic Light Emitting Diode (OLED) and flat-panel display devices based on technologies such as Light Emitting Diode (LED) have been widely used in various consumer electronic products such as mobile phones, televisions, laptops, and desktop computers due to their advantages such as high image quality, power saving, thin body, and wide range of applications, becoming the mainstream display device.

[0003] However, the performance of current display products needs to be improved. Summary of the Invention

[0004] Embodiments of the present application provide a display panel and a display device, aiming to improve the performance of the display panel.

[0005] An embodiment of the first aspect of the present application provides a display panel, comprising: a substrate, a pixel definition layer, a light-emitting layer and a photosensitive layer; the pixel definition layer is arranged on one side of the substrate, the pixel definition layer comprises a first pixel defining portion, a second pixel defining portion, a first opening formed by the first pixel defining portion and a second opening formed by the second pixel defining portion; the light-emitting layer comprises a light-emitting unit located in the first opening; the photosensitive layer comprises a photosensitive unit located in the second opening; wherein the second pixel defining portion is located on a side of the first pixel defining portion away from the substrate, or the second pixel defining portion is located on a side of the first pixel defining portion close to the substrate.

[0006] According to an embodiment of the present application, the photosensitive unit includes a first photosensitive electrode, a photosensitive structure, and a second photosensitive electrode that are sequentially stacked in a direction away from the substrate.

[0007] According to an embodiment of the present application, the display panel further includes a driving circuit layer, which is disposed on a side of the pixel definition layer facing the substrate, and the first photosensitive electrode is electrically connected to the driving circuit layer.

[0008] According to an embodiment of the present application, the light-emitting unit includes a first electrode, a light-emitting structure, and a second electrode stacked in sequence in a direction away from the substrate, and the first electrode is electrically connected to the driving circuit layer.

[0009] According to an embodiment of the present application, the second electrode is electrically connected to the second photosensitive electrode.

[0010] In an embodiment of the present application, the orthographic projection of the first pixel defining portion on the substrate at least partially overlaps with the orthographic projection of the second pixel defining portion on the substrate, and the orthographic projection of the first opening on the substrate and the orthographic projection of the second opening on the substrate are arranged in a staggered manner.

[0011] In an embodiment of the present application, the second pixel defining portion is disposed on the side of the first pixel defining portion away from the substrate, the first photosensitive electrode is disposed on the side of the first pixel defining portion away from the substrate, and the first photosensitive electrode via is connected to the driving circuit layer.

[0012] In an embodiment of the present application, a first connection electrode is disposed between the driving circuit layer and the first pixel defining portion, the first connection electrode is connected between the driving circuit layer and the first photosensitive electrode, and the first electrode and the first connection electrode are disposed on the same layer and spaced apart.

[0013] In an embodiment of the present application, the first pixel defining portion is provided with a first via, and the first photosensitive electrode is electrically connected to the first connection electrode through the first via.

[0014] In an embodiment of the present application, at least a part of the first photosensitive electrode is exposed to the second opening, and at least a part of the photosensitive structure and the second photosensitive electrode are located within the second opening.

[0015] In an embodiment of the present application, the second pixel defining portion includes a first sub-portion and a second sub-portion, the first sub-portion and the second sub-portion enclose to form the second opening, the second sub-portion has a first sidewall facing the second opening, and along the direction away from the substrate, the first sidewall is inclined towards the second opening.

[0016] In an embodiment of the present application, the second sub-portion has a first surface on the side away from the substrate and a second surface on the side facing the substrate, and the orthographic projection of the second surface on the substrate is located within the orthographic projection of the first surface on the substrate.

[0017] In an embodiment of the present application, the cross-sectional shape of the second sub-portion along the thickness direction of the display panel is an inverted trapezoid.

[0018] In an embodiment of the present application, the light-emitting unit includes a first common portion, the first common portion is disposed between the light-emitting structure and the first electrode, and / or, the first common portion is disposed between the light-emitting structure and the second electrode; the photosensitive unit includes a second common portion, the second common portion is disposed between the photosensitive structure and the first photosensitive electrode, and / or, the second common portion is disposed between the photosensitive structure and the second photosensitive electrode; the first common portion is located within the first opening and extends to the side of the first pixel defining portion away from the substrate, the second common portion is located within the second opening, one end of the second common portion extends to the first sidewall of the second sub-portion facing the second opening, and the other end of the second common portion extends to cover at least a part of the first sub-portion and connect to the first common portion.

[0019] In an embodiment of the present application, the first common part and / or the second common part includes at least one of a hole injection layer, a hole transport layer, an electron injection layer, or an electron transport layer.

[0020] In an embodiment of the present application, the light-emitting unit includes a first light-emitting unit and a second light-emitting unit. The distance between the photosensitive unit and the first light-emitting unit is less than the distance between the photosensitive unit and the second light-emitting unit. The second sub-part is disposed on the side of the photosensitive unit facing the first light-emitting unit.

[0021] In an embodiment of the present application, the emitted light of the first light-emitting unit is green, and the emitted light of the second light-emitting unit is red or blue.

[0022] In an embodiment of the present application, the photosensitive unit is used to sense green light.

[0023] In an embodiment of the present application, the second common part is connected to the first common part of the second light-emitting unit.

[0024] In an embodiment of the present application, a plurality of first light-emitting units are arranged at intervals along a first direction. The first light-emitting unit includes a first side and a second side that are oppositely arranged along a second direction. The photosensitive unit is disposed on the first side or the second side of the first light-emitting unit. Each second sub-part extends along the first direction and is located between the first sub-part and the first light-emitting unit. The first direction and the second direction intersect.

[0025] In an embodiment of the present application, two adjacent second sub-parts along the first direction are connected.

[0026] In an embodiment of the present application, along the first direction, the photosensitive units are alternately arranged on the first side and the second side of the first light-emitting unit.

[0027] In an embodiment of the present application, the light-emitting unit further includes a third light-emitting unit. The distance between the photosensitive unit and the first light-emitting unit is less than the distance between the photosensitive unit and the third light-emitting unit. The emitted light of the second light-emitting unit is one of red or blue, and the emitted light of the third light-emitting unit is the other of red or blue.

[0028] In an embodiment of the present application, the first pixel defining part is disposed on the side of the second pixel defining part away from the substrate. The light-transmitting opening formed by surrounding the first pixel defining part is in communication with the second opening.

[0029] In an embodiment of the present application, a second connection electrode is disposed between the driving circuit layer and the second pixel defining part. The second connection electrode is connected between the driving circuit layer and the first electrode. The first photosensitive electrode is in the same layer as the second connection electrode and is spaced apart from it.

[0030] In an embodiment of the present application, the positive projection of the second connection electrode on the substrate at least partially overlaps with the positive projection of the second pixel defining portion on the substrate. The second pixel defining portion is provided with a second via hole, and the second connection electrode is electrically connected to the first electrode through the second via hole.

[0031] In an embodiment of the present application, the second pixel defining portion includes a third sub - portion and a fourth sub - portion. The third sub - portion and the fourth sub - portion enclose a second opening. The fourth sub - portion has a second side wall facing the second opening. Along the direction away from the substrate, the second side wall is inclined towards the second opening.

[0032] In an embodiment of the present application, the light - emitting unit includes a first common portion. The first common portion is disposed between the light - emitting structure and the first electrode, and / or the first common portion is disposed between the light - emitting structure and the second electrode. The photosensitive unit includes a second common portion. The second common portion is disposed between the photosensitive structure and the first photosensitive electrode, and / or the second common portion is disposed between the photosensitive structure and the second photosensitive electrode. The first common portion is located within the first opening and extends to the side of the first pixel defining portion away from the substrate. The second common portion is located within the second opening. One end of the second common portion extends to the second side wall of the fourth sub - portion facing the second opening, and the other end of the second common portion extends to cover at least a part of the second side wall of the third sub - portion facing the second opening and is connected to the first common portion.

[0033] In an embodiment of the present application, the light - emitting unit includes a first light - emitting unit and a second light - emitting unit. The distance between the photosensitive unit and the first light - emitting unit is less than the distance between the photosensitive unit and the second light - emitting unit. The fourth sub - portion is disposed on the side of the photosensitive unit facing the first light - emitting unit.

[0034] In an embodiment of the present application, the emitted light of the first light - emitting unit is green, and the emitted light of the second light - emitting unit is red or blue.

[0035] In an embodiment of the present application, the photosensitive unit is used to sense green light.

[0036] In an embodiment of the present application, the second common portion is connected to the first common portion of the second light - emitting unit.

[0037] In an embodiment of the present application, a plurality of first light - emitting units are arranged at intervals along a first direction. The first light - emitting unit includes a first side and a second side that are oppositely disposed along a second direction. The photosensitive unit is disposed on the first side or the second side of the first light - emitting unit. Each fourth sub - portion extends along the first direction and is located between the third sub - portion and the first light - emitting unit. The first direction and the second direction intersect.

[0038] In an embodiment of the present application, two adjacent fourth sub - portions along the first direction are connected.

[0039] In an embodiment of the present application, along the first direction, the photosensitive units are alternately arranged on the first side and the second side of the first light-emitting unit.

[0040] In an embodiment of the present application, the light-emitting unit further includes a third light-emitting unit. The distance between the photosensitive unit and the first light-emitting unit is less than the distance between the photosensitive unit and the third light-emitting unit. The light emitted by the second light-emitting unit is one of red or blue, and the light emitted by the third light-emitting unit is the other of red or blue.

[0041] An embodiment of the second aspect of the present application further provides a display device, including the display panel in any one of the above first aspects.

[0042] In an embodiment of the present application, the light-emitting unit and the photosensitive unit are not arranged on the same layer, which can reduce the large-angle light or lateral light of the light-emitting unit from hitting the photosensitive unit, thereby improving the photosensitive accuracy of the photosensitive unit. Moreover, it can reduce the space occupied by the photosensitive unit in the light-emitting unit, which is beneficial to increasing the number of first openings, so as to increase the number of light-emitting units and improve the performance of the display panel. Description of the Drawings

[0043] By reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings, other features, objects, and advantages of the present application will become more apparent, wherein the same or similar reference numerals denote the same or similar features.

[0044] Figure 1 is a schematic structural diagram of a display panel provided by an embodiment of the present application;

[0045] Figure 2 is Figure 1 the cross-sectional view at AA in

[0046] Figure 3 is a schematic structural diagram of another display panel provided by an embodiment of the present application;

[0047] Figure 4 is Figure 3 the cross-sectional view at AA in

[0048] Figure 5 is a schematic partial structural diagram of the light-emitting unit provided by an embodiment of the present application;

[0049] Figure 6 is a schematic partial structural diagram of the photosensitive unit provided by an embodiment of the present application.

[0050] Description of reference numerals in the drawings: 100, substrate; 200, first pixel defining portion; 201, first via hole; 210, first opening; 300, light-emitting unit; 301, first light-emitting unit; 302, second light-emitting unit; 303, third light-emitting unit; 310, first electrode; 320, light-emitting structure; 330, second electrode; 340, second connection electrode; 400, photosensitive layer; 410, photosensitive unit; 411, first photosensitive electrode; 412, photosensitive structure; 413, second photosensitive electrode; 414, first connection electrode; 420, second pixel defining portion; 421, first sub-portion; 422, second sub-portion; 423, first side wall; 424, first surface; 425, second surface; 430, second opening; 440, light-transmitting opening; 450, second via hole; 461, third sub-portion; 462, fourth sub-portion; 463, second side wall; 500, driving circuit layer; 600, common layer; 610, first common portion; 620, second common portion; X, first direction; Y, second direction. Detailed implementation manners

[0051] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In the following detailed description, many specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to those skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present application by showing examples of the present application. In the drawings and the following description, at least some of the well-known structures and technologies are not shown in order to avoid unnecessarily obscuring the present application; and, for clarity, the dimensions of some structures may be exaggerated. In addition, the features, structures, or characteristics described below may be combined in any suitable manner in one or more embodiments.

[0052] In the description of the present application, it should be noted that unless otherwise specified, the meaning of "a plurality of" is two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0053] The orientation terms used in the following description are all the directions shown in the figures, and do not limit the specific structure of the embodiments of the present application. In the description of the present application, it should also be noted that unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0054] As Figures 1 to 4 shown, a display panel provided by an embodiment of the first aspect of the present application includes: a substrate 100, a pixel definition layer, a light-emitting layer, and a photosensitive layer 400. The pixel definition layer is disposed on one side of the substrate 100. The pixel definition layer includes a first pixel defining portion 200, a second pixel defining portion 420, a first opening 210 surrounded by the first pixel defining portion 200, and a second opening 430 surrounded by the second pixel defining portion 420. The light-emitting layer includes a light-emitting unit 300 located in the first opening 210. The photosensitive layer 400 includes a photosensitive unit 410 located in the second opening 430. The second pixel defining portion 420 is located on the side of the first pixel defining portion 200 away from the substrate 100, or the second pixel defining portion 420 is located on the side of the first pixel defining portion 200 close to the substrate 100.

[0055] In this embodiment, the first pixel defining portion 200 encloses the first opening 210, and the light-emitting unit 300 is located in each first opening 210. The first pixel defining portion 200 can reduce the light crosstalk between different light-emitting units 300 and improve the display effect of the display panel. The photosensitive layer 400 includes a photosensitive unit 410, and the photosensitive unit 410 can convert the optical signal of the reflected light formed by the light-emitting unit 300 irradiating the organism into an electrical signal, thereby realizing photosensitive functions such as biometric information recognition. The photosensitive layer 400 includes a photosensitive unit 410 located in the second opening 430. The second pixel defining portion 420 is located on the side of the first pixel defining portion 200 away from the substrate 100, or the second pixel defining portion 420 is located on the side of the first pixel defining portion 200 close to the substrate 100, that is, the light-emitting unit 300 and the photosensitive unit 410 are not arranged on the same layer, which can reduce the large-angle light or lateral light N of the light-emitting unit 300 irradiating the photosensitive unit 410, thereby improving the photosensitive accuracy of the photosensitive unit 410. And it can reduce the space occupied by the photosensitive unit 410 in the light-emitting unit 300, thereby facilitating increasing the number of the first openings 210 to increase the number of the light-emitting units 300 and improve the performance of the display panel.

[0056] As Figure 2As shown, in some alternative embodiments, the photosensitive unit 410 includes a first photosensitive electrode 411, a photosensitive structure 412, and a second photosensitive electrode 413 that are sequentially stacked in a direction away from the substrate 100.

[0057] In these alternative embodiments, the first photosensitive electrode 411 and the second photosensitive electrode 413 are used to drive the photosensitive structure 412 to sense light.

[0058] Optionally, as Figure 2 and Figure 4 shown, the display panel further includes a driving circuit layer 500 disposed on a side of the pixel defining layer facing the substrate 100, and the first photosensitive electrode 411 is electrically connected to the driving circuit layer 500. The display panel may be formed by sequentially stacking the substrate 100, the driving circuit layer 500, the first pixel defining portion 200, and the second pixel defining portion 420. The display panel may also be formed by sequentially stacking the substrate 100, the driving circuit layer 500, the second pixel defining portion 420, and the first pixel defining portion 200. The driving circuit layer 500 is electrically connected to the first photosensitive electrode 411 for transmitting an electrical signal.

[0059] Optionally, as Figure 2 and Figure 4 shown, the light emitting unit 300 includes a first electrode 310, a light emitting structure 320, and a second electrode 330 that are sequentially stacked in a direction away from the substrate 100, and the first electrode 310 is electrically connected to the driving circuit layer 500. The first electrode 310 and the second electrode 330 are used to drive the light emitting structure 320 to emit light, and the driving circuit layer 500 is connected to the first electrode 310 for transmitting an electrical signal to the first electrode 310. The light emitting unit 300 and the photosensitive unit 410 are not disposed on the same layer, which can reduce the lateral crosstalk of the reflected light M emitted from the light emitting structure 320 to the second electrode 330 to the photosensitive unit 410, thereby improving the photosensitive accuracy. Part of the light emitted by the light emitting structure 320 passes through the second electrode 330 after multiple reflections between the first electrode 310 and the second electrode 330. Part of the large-angle reflected light M reflected by the second electrode 330 laterally passes through the first pixel defining portion 200. The light emitting unit 300 and the photosensitive unit 410 are not disposed on the same layer, which can reduce the lateral crosstalk of the reflected light M emitted from the light emitting structure 320 to the second electrode 330 to the photosensitive unit 410, thereby improving the photosensitive accuracy.

[0060] As Figure 2 shown, in some alternative embodiments, the second electrode 330 is electrically connected to the second photosensitive electrode 413.

[0061] In these alternative embodiments, the second electrode 330 is electrically connected to the second photosensitive electrode 413 to form a planar electrode, thereby enabling the light emitting unit 300 to emit light normally and the photosensitive unit 410 to sense light normally.

[0062] Optionally, as Figure 2 shown, the orthographic projection of the first pixel defining portion 200 on the substrate 100 and the orthographic projection of the second pixel defining portion 420 on the substrate 100 at least partially overlap, and the orthographic projection of the first opening 210 on the substrate 100 and the orthographic projection of the second opening 430 on the substrate 100 are misaligned, which can reduce the crosstalk of the emitted light of the light emitting unit 300 to the photosensitive unit 410 and improve the photosensitive accuracy of the photosensitive unit 410.

[0063] As Figure 2 shown, in some alternative embodiments, the second pixel defining portion 420 is disposed on a side of the first pixel defining portion 200 away from the substrate 100, and the first photosensitive electrode 411 is disposed on a side of the first pixel defining portion 200 away from the substrate 100, and the first photosensitive electrode 411 is connected to the driving circuit layer 500 through a via.

[0064] In these alternative embodiments, the substrate 100, the first pixel defining portion 200, and the second pixel defining portion 420 are sequentially stacked, and the side of the light emitting layer away from the substrate 100 is the light emitting surface of the display panel. The photosensitive layer 400 is disposed on a side of the first pixel defining portion 200 away from the substrate 100, so that the photosensitive layer 400 is closer to the light emitting surface of the display panel, thereby improving the photosensitive accuracy of the photosensitive layer 400. The first photosensitive electrode 411 is formed on a side of the first pixel defining portion 200 away from the substrate 100, reducing the interference of the first photosensitive electrode 411 on the light emission of the light emitting unit 300 and reducing the interference of the light emission of the light emitting unit 300 on the photosensitive accuracy of the photosensitive unit 410. The substrate 100, the driving circuit layer 500, the first pixel defining portion 200, and the second pixel defining portion 420 are sequentially stacked, and the distance between the photosensitive unit 410 and the driving circuit layer 500 is larger, which can reduce the parasitic capacitance generated between the driving circuit layer 500 and the photosensitive unit 410 and is beneficial to improving the signal amount of the photosensitive unit 410.

[0065] As Figure 2 shown, in some alternative embodiments, a first connection electrode 414 is disposed between the driving circuit layer 500 and the first pixel defining portion 200. The first connection electrode 414 is connected between the driving circuit layer 500 and the first photosensitive electrode 411, and the first electrode 310 and the first connection electrode 414 are in the same layer and are spaced apart.

[0066] In these alternative embodiments, the first photosensitive electrode 411 is connected to the driving circuit layer 500 through the first connection electrode 414, and the first electrode 310 and the first connection electrode 414 are in the same layer and are spaced apart. On the one hand, the risk of short circuit between the first electrode 310 and the first connection electrode 414 can be reduced, and the first electrode 310 can be formed in the same process step as the first connection electrode 414, thereby simplifying the process.

[0067] Optionally, asFigure 2 As shown, the orthographic projection of the first connection electrode 414 on the substrate 100 and the orthographic projection of the first pixel defining portion 200 on the substrate 100 at least partially overlap. The first pixel defining portion 200 is provided with a first via 201, and the first photosensitive electrode 411 is electrically connected to the first connection electrode 414 through the first via 201.

[0068] As Figure 2 shown, in some alternative embodiments, at least a portion of the first photosensitive electrode 411 is exposed in the second opening 430, and at least a portion of the photosensitive structure 412 and the second photosensitive electrode 413 are located within the second opening 430.

[0069] In these alternative embodiments, the photosensitive unit 410 is formed in the second opening 430, and the orthographic projection of at least a portion of the first photosensitive electrode 411 on the substrate 100 is located within the orthographic projection of the second opening 430 on the substrate 100, so that the first photosensitive electrode 411 and the second photosensitive electrode 413 drive the photosensitive structure 412 located within the second opening.

[0070] As Figure 2 shown, in some alternative embodiments, the second pixel defining portion 420 includes a first sub-portion 421 and a second sub-portion 422. The first sub-portion 421 and the second sub-portion 422 enclose the second opening 430. The second sub-portion 422 has a first sidewall 423 facing the second opening 430. Along the direction away from the substrate 100, the first sidewall 423 is inclined toward the second opening 430.

[0071] In these alternative embodiments, the first sub-portion 421 and the second sub-portion 422 jointly enclose the second opening 430, that is, the first sub-portion 421 and the second sub-portion 422 are distributed around the circumferential side of the photosensitive unit 410. Along the direction away from the substrate 100, the first sidewall 423 of the second sub-portion 422 facing the second opening 430 is inclined toward the second opening 430, forming an inward concavity on the side of the second sub-portion 422 facing the second opening 430. When the photosensitive unit 410 is formed, the material of the photosensitive unit 410 is disconnected at the first sidewall 423 of the second sub-portion 422, reducing the carrier crosstalk between the photosensitive unit 410 and the light-emitting unit 300.

[0072] Optionally, as Figure 2 shown, the second sub-portion 422 has a first surface 424 on the side away from the substrate 100 and a second surface 425 on the side facing the substrate 100. The orthographic projection of the second surface 425 on the substrate 100 is located within the orthographic projection of the first surface 424 on the substrate 100, so that the first sidewall 423 of the second sub-portion 422 facing the second opening 430 is inclined toward the second opening 430.

[0073] Optionally, as Figure 2As shown, the cross-sectional shape of the second sub-portion 422 along the thickness direction of the display panel is an inverted trapezoid.

[0074] Optionally, the material of the second sub-portion 422 includes a negative photoresist. When patterning the negative photoresist to form the second sub-portion 422, the negative photoresist is exposed. The side of the negative photoresist away from the substrate 100 is closer to the exposure light source, and the degree of cross-linking reaction is greater than that of the side of the negative photoresist facing the substrate 100. When developing with a developer, the degree of dissolution of the side of the negative photoresist away from the substrate 100 by the developer is less than that of the side of the negative photoresist facing the substrate 100, so that the first side wall 423 of the second sub-portion 422 facing the second opening 430 is inclined.

[0075] Optionally, as Figure 2 shown, the light-emitting unit 300 includes a first common portion 610, the first common portion 610 is disposed between the light-emitting structure 320 and the first electrode 310, and / or, the first common portion 610 is disposed between the light-emitting structure 320 and the second electrode 330; the photosensitive unit 410 includes a second common portion 620, the second common portion 620 is disposed between the photosensitive structure 412 and the first photosensitive electrode 411, and / or, the second common portion 620 is disposed between the photosensitive structure 412 and the second photosensitive electrode 413; the first common portion 610 is located in the first opening 210 and extends to the side of the first pixel defining portion 200 away from the substrate 100, the second common portion 620 is located in the second opening 430, one end of the second common portion 620 extends to the first side wall 423 of the second sub-portion 422 facing the second opening 430, and the other end of the second common portion 620 extends to cover at least part of the first sub-portion 421 and connect to the first common portion 610.

[0076] As Figure 2 and Figure 5 shown, the first common portion 610 is located on the side of the light-emitting structure 320 facing the substrate 100 and / or on the side away from the substrate 100, and the first common portion 610 extends through the first opening 210 to the side of the first pixel defining portion 200 away from the substrate 100. As Figure 2 and Figure 6 shown, the second common portion 620 is located on the side of the photosensitive structure 412 facing the substrate 100 and / or on the side away from the substrate 100. One end of the second common portion 620 extends to the first side wall 423 of the second sub-portion 422 facing the second opening 430, so that one end of the second common portion 620 is spaced apart from the first common portion 610, reducing the carrier crosstalk between the first common portion 610 and the second common portion 620 on the second sub-portion 422. The other end of the second common portion 620 extends to cover at least part of the first sub-portion 421 and connect to the first common portion 610.

[0077] Optionally, the first common part 610 includes at least one of a hole injection layer, a hole transport layer, an electron injection layer, or an electron transport layer.

[0078] Optionally, the second common part 620 includes at least one of a hole injection layer, a hole transport layer, an electron injection layer, or an electron transport layer.

[0079] As Figure 1 and Figure 2 As shown, in some alternative embodiments, the light-emitting unit 300 includes a first light-emitting unit 301 and a second light-emitting unit 302. The distance between the photosensing unit 410 and the first light-emitting unit 301 is less than the distance between the photosensing unit 410 and the second light-emitting unit 302. The second sub-part 422 is disposed on the side of the photosensing unit 410 facing the first light-emitting unit 301.

[0080] In these alternative embodiments, the photosensing unit 410 is closer to the first light-emitting unit 301. Thus, when the reflected light reaches the photosensing unit 410, the carriers generated by the second common part 620 are likely to crosstalk to the first common part 610 within the first opening 210 where the first light-emitting unit 301 is located, causing the first light-emitting unit 301 to emit light. By disposing the second sub-part 422 on the side of the photosensing unit 410 facing the first light-emitting unit 301, the first common part 610 of the first light-emitting unit 30I and the second common part 620 are disconnected at the second sub-part 422, reducing the crosstalk of the carriers generated by the second common part 620 to the first common part 610 within the first opening 210 where the first light-emitting unit 301 is located.

[0081] Optionally, the emitted light of the first light-emitting unit 301 is green, and the emitted light of the second light-emitting unit 302 is red or blue. The brightness of the emitted light of the green first light-emitting unit 301 is greater than the brightness of the emitted light of the second light-emitting unit 302. The brightness of the reflected light from the first light-emitting unit 301 to the organism is relatively high. By disposing the photosensing unit 410 closer to the first light-emitting unit 301, the photosensing unit 410 can receive reflected light with a greater brightness, improving the photosensing accuracy of the photosensing unit 410. Optionally, the photosensing unit 410 is used to sense green light. In the display panel, the proportion of green pixels is higher, that is, the proportion of the first light-emitting unit 301 is higher than that of the second light-emitting unit 302, and the proportion of the first light-emitting unit 301 is higher than that of the third light-emitting unit 303. The photosensing unit 410 relies on green light data, which can improve the photosensing accuracy of the photosensing unit.

[0082] Optionally, as Figure 2 shown, the second common part 620 is connected to the first common part 610 of the second light-emitting unit 302.

[0083] As Figure 1As shown, in some alternative embodiments, a plurality of first light-emitting units 301 are arranged at intervals along a first direction X. The first light-emitting unit 301 includes a first side and a second side that are oppositely arranged along a second direction Y. The photosensitive unit 410 is disposed on the first side or the second side of the first light-emitting unit 301. Each second sub-part 422 extends along the first direction X and is located between the first sub-part 421 and the first light-emitting unit 301. The first direction X intersects the second direction Y.

[0084] In these alternative embodiments, the photosensitive unit 410 is disposed on the first side or the second side of each first light-emitting unit 301 along the second direction Y. The distance between the photosensitive unit 410 and the adjacent first light-emitting unit 301 is small, and carrier crosstalk is likely to occur. The second sub-part 422 is disposed between the photosensitive unit 410 and the first light-emitting unit 301 and extends along the first direction X, so that the adjacent two first common parts 610 and second common parts 620 are arranged at intervals, reducing carrier crosstalk.

[0085] Optionally, as Figure 1 shown, two adjacent second sub-parts 422 are connected along the first direction X to enhance the partitioning effect of the second sub-part 422 and facilitate the preparation of the second sub-part 422. Two adjacent second sub-parts 422 extend along the first direction X and are connected to each other, so as to form a plurality of second sub-parts 422 connected in sequence and extending along the first direction X, enhancing the isolation effect of the second sub-part 422.

[0086] Optionally, as Figure 1 shown, along the first direction X, the photosensitive units 410 are alternately arranged on the first side and the second side of the first light-emitting unit 301, that is, the photosensitive units 410 corresponding to two adjacent first light-emitting units 301 are located on different sides of the first light-emitting unit 301 along the second direction Y, so that the first light-emitting units 301 can be evenly arranged, improving the display uniformity of the display panel, and enabling the photosensitive units 410 to be evenly distributed, improving the photosensitive effect of the photosensitive units 410.

[0087] Optionally, as Figure 1 shown, the light-emitting unit 300 further includes a third light-emitting unit 303. The distance between the photosensitive unit 410 and the first light-emitting unit 301 is less than the distance between the photosensitive unit 410 and the third light-emitting unit 303. The light emitted by the second light-emitting unit 302 is one of red or blue, and the light emitted by the third light-emitting unit 303 is the other of red or blue.

[0088] As Figure 3 and Figure 4As shown, in some alternative embodiments, the first pixel defining portion 200 is disposed on a side of the second pixel defining portion 420 away from the substrate 100. A light-transmitting opening 440 formed by surrounding the first pixel defining portion 200 is in communication with the second opening 430.

[0089] In these alternative embodiments, the substrate 100, the second pixel defining portion 420, and the first pixel defining portion 200 are sequentially stacked. The light-emitting direction of the light-emitting unit 300 in the first opening 210 is toward the side away from the substrate 100, thereby reducing the crosstalk of the large-angle light or the lateral light N of the light-emitting unit 300 to the photosensitive unit 410.

[0090] Optionally, as Figure 4 shown, the light-transmitting opening 440 formed by surrounding the first pixel defining portion 200 is in communication with the second opening 430. The photosensitive unit 410 can convert the optical signal of the reflected light formed by the light-emitting unit 300 irradiating the living body into an electrical signal, thereby realizing photosensitive functions such as biological information recognition. The reflected light is irradiated onto the photosensitive unit 410 in the second opening 430 through the light-transmitting opening 440.

[0091] As Figure 4 shown, in some alternative embodiments, a second connection electrode 340 is disposed between the driving circuit layer 500 and the second pixel defining portion 420. The second connection electrode 340 is connected between the driving circuit layer 500 and the first electrode 310. The first photosensitive electrode 411 and the second connection electrode 340 are in the same layer and are spaced apart.

[0092] In these alternative embodiments, the first electrode 310 is connected to the driving circuit layer 500 through the second connection electrode 340. The first photosensitive electrode 411 and the second connection electrode 340 are in the same layer and are spaced apart. On the one hand, the risk of short circuit between the first photosensitive electrode 411 and the second connection electrode 340 can be reduced, and the first photosensitive electrode 411 can be formed in the same process step as the second connection electrode 340, thereby simplifying the process.

[0093] Optionally, as Figure 4 shown, the positive projection of the second connection electrode 340 on the substrate 100 at least partially overlaps the positive projection of the second pixel defining portion 420 on the substrate 100. The second pixel defining portion 420 is provided with a second via 450. The second connection electrode 340 is electrically connected to the first electrode 310 through the second via 450. The second connection electrode 340 is disposed on a side of the second pixel defining portion 420 facing the substrate 100, and the first electrode 310 is disposed on a side of the second pixel defining portion 420 away from the substrate 100. The second pixel defining portion 420 is provided with a second via 450, and the first electrode 310 is electrically connected to the second connection electrode 340 through the second via 450.

[0094] As Figure 4 shown, in some alternative embodiments, the second pixel defining portion 420 includes a third sub-portion 461 and a fourth sub-portion 462. The third sub-portion 461 and the fourth sub-portion 462 surround and define a second opening 430. The fourth sub-portion 462 has a second sidewall 463 facing one side of the second opening 430. Along the direction away from the substrate 100, the second sidewall 463 is inclined towards the second opening 430.

[0095] In these alternative embodiments, the third sub-portion 461 and the fourth sub-portion 462 jointly surround and define the second opening 430, that is, the third sub-portion 461 and the fourth sub-portion 462 are distributed around the peripheral side of the photosensitive unit 410. Along the direction away from the substrate 100, the second sidewall 463 of the fourth sub-portion 462 facing one side of the second opening 430 is inclined towards the second opening 430, forming a concave on the side of the fourth sub-portion 462 facing the second opening 430. When forming the photosensitive unit 410, the material of the photosensitive unit 410 is disconnected at the second sidewall 463 of the fourth sub-portion 462, reducing the carrier crosstalk between the photosensitive unit 410 and the light-emitting unit 300.

[0096] As Figure 4 and Figure 6 shown, in some alternative embodiments, the light-emitting unit 300 includes a first common portion 610. The first common portion 610 is disposed between the light-emitting structure 320 and the first electrode 310, and / or the first common portion 610 is disposed between the light-emitting structure 320 and the second electrode 330. The photosensitive unit 410 includes a second common portion 620. The second common portion 620 is disposed between the photosensitive structure 412 and the first photosensitive electrode 411, and / or the second common portion 620 is disposed between the photosensitive structure 412 and the second photosensitive electrode 413. The first common portion 610 is located within the first opening 210 and extends to the side of the first pixel defining portion 200 away from the substrate 100. The second common portion 620 is located within the second opening 430. One end of the second common portion 620 extends to the second sidewall 463 of the fourth sub-portion 462 facing the second opening 430, and the other end of the second common portion 620 extends to cover at least part of the second sidewall 463 of the third sub-portion 461 facing the second opening 430 and is connected to the first common portion 610.

[0097] In these alternative embodiments, the second sidewall 463 of the fourth sub-portion 462 facing the second opening 430 is inclined towards the second opening 430, so that one end of the second common portion 620 is spaced from the first common portion 610, reducing the carrier crosstalk generated by the first common portion 610 and the second common portion 620 on the fourth sub-portion 462. The other end of the second common portion 620 extends to cover at least part of the third sub-portion 461 and is connected to the first common portion 610.

[0098] Optionally, as Figure 3 and Figure 4 shown, the light-emitting unit 300 includes a first light-emitting unit 301 and a second light-emitting unit 302. The distance between the photosensitive unit 410 and the first light-emitting unit 301 is smaller than the distance between the photosensitive unit 410 and the second light-emitting unit 302. The fourth sub-part 462 is disposed on the side of the photosensitive unit 410 facing the first light-emitting unit 301.

[0099] Optionally, the emitted light of the first light-emitting unit 301 is green, the emitted light of the second light-emitting unit 302 is red or blue, and the photosensitive unit 410 is used to sense green light.

[0100] Optionally, as Figure 4 shown, the second common part 620 is connected to the first common part 610 of the second light-emitting unit 302.

[0101] As Figure 3 shown, in some alternative embodiments, a plurality of first light-emitting units 301 are arranged at intervals along the first direction X. The first light-emitting unit 301 includes a first side and a second side that are oppositely arranged along the second direction Y. The photosensitive unit 410 is disposed on the first side or the second side of the first light-emitting unit 301. Each fourth sub-part 462 extends along the first direction X and is located between the third sub-part 461 and the first light-emitting unit 301. The first direction X and the second direction Y intersect.

[0102] In these alternative embodiments, the photosensitive unit 410 is disposed on the first side or the second side of each first light-emitting unit 301 along the second direction Y. The distance between the photosensitive unit 410 and the adjacent first light-emitting unit 301 is small, and carrier crosstalk is likely to occur. The fourth sub-part 462 is disposed between the photosensitive unit 410 and the first light-emitting unit 301 and extends along the first direction X, so that the adjacent first common parts 610 and the second common parts 620 are arranged at intervals, reducing carrier crosstalk.

[0103] Optionally, as Figure 3 shown, two adjacent fourth sub-parts 462 along the first direction X are connected to improve the isolation effect of the fourth sub-part 462 and facilitate the preparation of the fourth sub-part 462. Two adjacent fourth sub-parts 462 extend along the first direction X and are connected to each other, so as to form a plurality of fourth sub-parts 462 that are connected in sequence and extend along the first direction X, improving the isolation effect of the fourth sub-part 462.

[0104] An embodiment of the second aspect of the present application further provides a display device, including the display panel of any one of the above-mentioned first aspect embodiments. Since the display device provided by the embodiment of the second aspect of the present application includes the display panel of any one of the above-mentioned first aspect embodiments, the display device provided by the embodiment of the second aspect of the present application has the beneficial effects of the display panel of any one of the above-mentioned first aspect embodiments, which will not be elaborated here.

[0105] The display device in the embodiments of the present application includes, but is not limited to, devices with display functions such as mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, access control devices, smart landline phones, and consoles.

[0106] Although the present application has been described with reference to the preferred embodiments, various improvements can be made to it and components therein can be replaced with equivalents without departing from the scope of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A display panel, characterized in that, Comprising: A substrate; A pixel definition layer disposed on one side of the substrate, the pixel definition layer including a first pixel defining portion, a second pixel defining portion, a first opening formed by enclosing the first pixel defining portion, and a second opening formed by enclosing the second pixel defining portion; A light-emitting layer including a light-emitting unit located in the first opening; A photosensitive layer including a photosensitive unit located in the second opening; Wherein, the second pixel defining portion is located on the side of the first pixel defining portion away from the substrate, or the second pixel defining portion is located on the side of the first pixel defining portion close to the substrate.

2. The display panel according to claim 1, wherein The photosensitive unit includes a first photosensitive electrode, a photosensitive structure, and a second photosensitive electrode that are sequentially stacked in a direction away from the substrate; Preferably, the display panel further includes a driving circuit layer disposed on the side of the pixel definition layer facing the substrate, and the first photosensitive electrode is electrically connected to the driving circuit layer; Preferably, the light-emitting unit includes a first electrode, a light-emitting structure, and a second electrode that are sequentially stacked in a direction away from the substrate, and the first electrode is electrically connected to the driving circuit layer; Preferably, the second electrode is electrically connected to the second photosensitive electrode; Preferably, the orthographic projection of the first pixel defining portion on the substrate at least partially overlaps with the orthographic projection of the second pixel defining portion on the substrate, and the orthographic projection of the first opening on the substrate and the orthographic projection of the second opening on the substrate are arranged in a staggered manner.

3. The display panel according to claim 2, characterized in that, The second pixel defining portion is disposed on the side of the first pixel defining portion away from the substrate, the first photosensitive electrode is disposed on the side of the first pixel defining portion away from the substrate, and the first photosensitive electrode is connected to the driving circuit layer through a via hole; Preferably, a first connection electrode is disposed between the driving circuit layer and the first pixel defining portion, the first connection electrode is connected between the driving circuit layer and the first photosensitive electrode, and the first electrode and the first connection electrode are in the same layer and are spaced apart; Preferably, the first pixel defining portion is provided with a first via hole, and the first photosensitive electrode is electrically connected to the first connection electrode through the first via hole.

4. The display panel according to claim 3, characterized in that, At least a part of the first photosensitive electrode is exposed in the second opening, and at least a part of the photosensitive structure and the second photosensitive electrode are located in the second opening.

5. The display panel according to claim 4, wherein, The second pixel defining portion includes a first sub-portion and a second sub-portion, the first sub-portion and the second sub-portion enclose the second opening, and the second sub-portion has a first side wall on the side facing the second opening, and along the direction away from the substrate, the first side wall is inclined towards the second opening; Preferably, the second sub-portion has a first surface on the side away from the substrate and a second surface on the side facing the substrate, and the orthographic projection of the second surface on the substrate is located within the orthographic projection of the first surface on the substrate; Preferably, the cross-sectional shape of the second sub-portion along the thickness direction of the display panel is an inverted trapezoid; Preferably, the light-emitting unit includes a first common portion, which is arranged between the light-emitting structure and the first electrode, and / or, the first common portion is arranged between the light-emitting structure and the second electrode; the photosensitive unit includes a second common portion, which is arranged between the photosensitive structure and the first photosensitive electrode, and / or, the second common portion is arranged between the photosensitive structure and the second photosensitive electrode; the first common portion is located in the first opening and extends to the side of the first pixel defining portion facing away from the substrate, the second common portion is located in the second opening, one end of the second common portion extends to the first side wall of the second sub-portion facing the second opening, and the other end of the second common portion extends to cover at least a portion of the first sub-portion and connect to the first common portion; Preferably, the first common portion and / or the second common portion includes at least one of a hole injection layer, a hole transport layer, an electron injection layer or an electron transport layer.

6. The display panel according to claim 5, characterized in that, The light-emitting unit includes a first light-emitting unit and a second light-emitting unit, the distance between the photosensitive unit and the first light-emitting unit is smaller than the distance between the photosensitive unit and the second light-emitting unit, and the second sub-unit is arranged on a side of the photosensitive unit facing the first light-emitting unit; Preferably, the light emitted by the first light emitting unit is green, and the light emitted by the second light emitting unit is red or blue; Preferably, the photosensitive unit is used to sense green light; Preferably, the second common portion is connected to the first common portion of the second light-emitting unit.

7. The display panel according to claim 6, wherein A plurality of first light-emitting units are arranged at intervals along a first direction, the first light-emitting unit includes a first side and a second side oppositely disposed along a second direction, the photosensitive unit is disposed on the first side or the second side of the first light-emitting unit, each second sub-section extends along the first direction and is located between the first sub-section and the first light-emitting unit, and the first direction and the second direction intersect; Preferably, two adjacent second sub-sections along the first direction are connected; Preferably, along the first direction, the photosensitive units are alternately arranged on the first side and the second side of the first light emitting unit; Preferably, the light-emitting unit also includes a third light-emitting unit, the distance between the photosensitive unit and the first light-emitting unit is smaller than the distance between the photosensitive unit and the third light-emitting unit, the light emitted by the second light-emitting unit is one of red or blue, and the light emitted by the third light-emitting unit is the other of red or blue.

8. The display panel according to claim 2, characterized in that, The first pixel defining portion is disposed on a side of the second pixel defining portion facing away from the substrate, and the first pixel defining portion encloses a light-transmitting opening, the light-transmitting opening being in communication with the second opening; Preferably, a second connecting electrode is provided between the driving circuit layer and the second pixel defining portion, the second connecting electrode is connected between the driving circuit layer and the first electrode, and the first photosensitive electrode and the second connecting electrode are in the same layer and spaced apart. Preferably, a positive projection of the second connection electrode on the substrate at least partially overlaps a positive projection of the second pixel defining portion on the substrate. The second pixel defining portion is provided with a second via hole, and the second connection electrode is electrically connected to the first electrode through the second via hole.

9. The display panel according to claim 8, wherein The second pixel defining portion includes a third sub-portion and a fourth sub-portion. The third sub-portion and the fourth sub-portion enclose the second opening. The fourth sub-portion has a second sidewall facing the second opening. Along a direction away from the substrate, the second sidewall is inclined towards the second opening. Preferably, the light-emitting unit includes a first common portion disposed between the light-emitting structure and the first electrode, and / or the first common portion is disposed between the light-emitting structure and the second electrode. The photosensitive unit includes a second common portion disposed between the photosensitive structure and the first photosensitive electrode, and / or the second common portion is disposed between the photosensitive structure and the second photosensitive electrode. The first common portion is located within the first opening and extends to a side of the first pixel defining portion away from the substrate. The second common portion is located within the second opening. One end of the second common portion extends to the second sidewall of the fourth sub-portion facing the second opening, and the other end of the second common portion extends to cover at least a part of the second sidewall of the third sub-portion facing the second opening and is connected to the first common portion. Preferably, the light-emitting unit includes a first light-emitting unit and a second light-emitting unit. A distance between the photosensitive unit and the first light-emitting unit is less than a distance between the photosensitive unit and the second light-emitting unit. The fourth sub-portion is disposed on a side of the photosensitive unit facing the first light-emitting unit. Preferably, the emitted light of the first light-emitting unit is green, and the emitted light of the second light-emitting unit is red or blue. Preferably, the photosensitive unit is configured to sense green light. Preferably, the second common portion is connected to the first common portion of the second light-emitting unit. Preferably, a plurality of the first light-emitting units are arranged at intervals along a first direction. The first light-emitting unit includes a first side and a second side oppositely disposed along a second direction. The photosensitive unit is disposed on the first side or the second side of the first light-emitting unit. Each of the fourth sub-portions extends along the first direction and is located between the third sub-portion and the first light-emitting unit. The first direction intersects the second direction. Preferably, two adjacent fourth sub-portions along the first direction are connected to each other. Preferably, along the first direction, the photosensitive units are alternately arranged on the first side and the second side of the first light-emitting unit. Preferably, the light-emitting unit further includes a third light-emitting unit. A distance between the photosensitive unit and the first light-emitting unit is less than a distance between the photosensitive unit and the third light-emitting unit. The emitted light of the second light-emitting unit is one of red or blue, and the emitted light of the third light-emitting unit is the other of red or blue.

10. A display device, characterized in that, A display panel including any one of claims 1-9.

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