Display panel, manufacturing method of display panel and display device

Abstract

The embodiment of the invention provides a display panel, a manufacturing method of the display panel and a display device. The display panel comprises a substrate, a pixel definition layer, a first electrode layer and a functional layer, the pixel defining layer is arranged on one side of the substrate and comprises a pixel limiting part and a plurality of limiting openings defined by the pixel limiting part, and the limiting openings comprise pixel openings and photosensitive openings adjacent to the pixel openings; the first electrode layer comprises a plurality of first electrodes arranged at intervals; the functional layer comprises a light-emitting structure located in the pixel opening and a light-sensing structure located in the light-sensing opening; wherein the pixel limiting part comprises a first side wall facing one side of the limiting opening, and the at least one first electrode covers at least part of the first side wall, so that emergent light of the light-emitting structure entering the photosensitive opening through the first side wall is reduced, the photosensitive precision of the photosensitive structure is improved, and the use performance of the display panel is improved.

Description

Technical Field

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

[0002] Flat panel display devices based on technologies such as Organic Light Emitting Diode (OLED) and Light Emitting Diode (LED) are widely used in various consumer electronic products such as mobile phones, televisions, laptop computers, and desktop computers due to advantages such as high image quality, power saving, thin body, and wide application range, and have become the mainstream in display devices.

[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, a manufacturing method of the 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, including: a substrate, a pixel definition layer, a first electrode layer, and a functional layer. The pixel definition layer is disposed on one side of the substrate. The pixel definition layer includes pixel defining portions and a plurality of defining openings surrounded by the pixel defining portions. The defining openings include pixel openings and photosensitive openings adjacent to the pixel openings. The first electrode layer and the pixel definition layer are disposed on the same side of the substrate and include a plurality of first electrodes arranged at intervals. The orthographic projection of each first electrode on the substrate and the orthographic projection of each defining opening on the substrate at least partially overlap. The functional layer includes a light emitting structure located in the pixel opening and a photosensitive structure located in the photosensitive opening. The pixel defining portion includes a first sidewall facing one side of the pixel opening and / or the photosensitive opening, and at least one first electrode covers at least a part of the first sidewall.

[0006] In an embodiment of the present application, the first electrode includes a first photosensitive electrode, at least a part of the first photosensitive electrode is located in the photosensitive opening, and the first photosensitive electrode covers at least a part of the first sidewall.

[0007] In an embodiment of the present application, at least one first photosensitive electrode covers a part of the first sidewall of the photosensitive opening facing the adjacent pixel opening.

[0008] In an embodiment of the present application, the material of the first photosensitive electrode includes a light shielding material.

[0009] In an embodiment of the present application, the material of the first photosensitive electrode includes silver or aluminum.

[0010] In an embodiment of the present application, the pixel defining portion includes a first surface on a side facing away from the substrate, and a part of the first photosensitive electrode extends from the photosensitive opening to the first surface.

[0011] In an embodiment of the present application, a first sidewall is disposed around the photosensitive opening, and the first photosensitive electrode covers the first sidewall.

[0012] In an embodiment of the present application, the photosensitive structure is located on a side of the first photosensitive electrode facing away from the substrate, and the photosensitive structure covers a side of the first photosensitive electrode facing away from the first sidewall.

[0013] In an embodiment of the present application, the photosensitive structure covers a side of the first photosensitive electrode facing away from the first surface.

[0014] In an embodiment of the present application, the photosensitive structure includes a first common portion and a photosensitive material layer disposed in a stacked manner.

[0015] In an embodiment of the present application, the light-emitting structure includes a second common portion and a light-emitting material layer disposed in a stacked manner, and the second common portion extends to the first surface and is connected to the first common portion.

[0016] In an embodiment of the present application, the display panel further includes an isolation portion, the isolation portion is disposed on a side of the pixel defining portion facing away from the substrate, the isolation portion encloses an isolation opening, and a positive projection of the isolation opening on the substrate at least partially overlaps with a positive projection of the first photosensitive electrode on the substrate.

[0017] In an embodiment of the present application, a positive projection of the first photosensitive electrode on the substrate is located within a positive projection of the isolation opening on the substrate.

[0018] In an embodiment of the present application, the isolation portion at least partially covers an edge of the first photosensitive electrode along a direction away from the photosensitive opening.

[0019] In an embodiment of the present application, the photosensitive structure includes a first common portion and a photosensitive material layer disposed in a stacked manner, and a positive projection of the photosensitive material layer on the substrate is located within a positive projection of the isolation opening on the substrate.

[0020] In an embodiment of the present application, the first common portion extends from within the isolation opening to cover a side of the isolation portion facing away from the substrate.

[0021] In an embodiment of the present application, the isolation portion includes a light-shielding material.

[0022] In an embodiment of the present application, the first electrode includes a first light-emitting electrode, at least a part of the first light-emitting electrode is located within the pixel opening, and the first light-emitting electrode covers at least a part of the first sidewall.

[0023] In an embodiment of the present application, at least one first light-emitting electrode covers a part of the first sidewall on a side of the pixel opening facing an adjacent photosensitive opening.

[0024] According to an embodiment of the present application, the material of the first light emitting electrode includes a light shielding material.

[0025] According to an embodiment of the present application, the material of the first light emitting electrode includes silver or aluminum.

[0026] According to an embodiment of the present application, the first side wall is disposed around the pixel opening, and the first light emitting electrode covers the first side wall.

[0027] According to an embodiment of the present application, the pixel defining portion includes a first surface on a side facing away from the substrate, a portion of the first light-emitting electrode is located in the pixel opening, and the first light-emitting electrode extends to the first surface; the light-emitting structure is located on a side of the first light-emitting electrode facing away from the substrate, and the light-emitting structure covers a side of the first light-emitting electrode facing away from the first side wall.

[0028] According to an embodiment of the present application, the light emitting structure covers a side of the first light emitting electrode away from the first surface;

[0029] According to an embodiment of the present application, the light emitting structure includes a second common portion and a light emitting material layer which are stacked.

[0030] According to an embodiment of the present application, the photosensitive structure includes a first common portion and a photosensitive material layer that are stacked, and the first common portion extends to the first surface and is connected to the second common portion.

[0031] According to an embodiment of the present application, the display panel further includes an isolation portion disposed on the side of the pixel defining portion away from the substrate, the isolation portion encloses an isolation opening, and the orthographic projection of the isolation opening on the substrate at least partially overlaps with the orthographic projection of the first light-emitting electrode on the substrate.

[0032] According to an embodiment of the present application, the isolation portion at least partially covers an edge of the first light emitting electrode along a direction away from the pixel opening.

[0033] According to an embodiment of the present application, the first sidewall includes a plurality of sub-sidewalls distributed around the pixel opening, and the first light emitting electrode covers a portion of the sub-sidewalls.

[0034] According to an embodiment of the present application, the pixel opening is arranged adjacent to the photosensitive opening, and the first light-emitting electrode covers a sub-side wall of the pixel opening facing the photosensitive opening.

[0035] According to an embodiment of the present application, the first sidewall includes four sub-sidewalls arranged around the pixel opening, and the first light emitting electrode covers one sub-sidewall.

[0036] In an embodiment of the present application, the display panel further includes a second electrode layer. The second electrode layer includes a second light-emitting electrode on the side of the light-emitting structure facing away from the substrate and a second photosensitive electrode on the side of the photosensitive structure facing away from the substrate. The second light-emitting electrode and the second photosensitive electrode are connected to each other on the side of the pixel defining portion facing away from the substrate.

[0037] In an embodiment of the present application, the display panel further includes a packaging layer, and the packaging layer is packaged on the side of the second electrode layer facing away from the substrate.

[0038] In an embodiment of the present application, the display panel further includes a connection electrode. The orthographic projection of the connection electrode on the substrate at least partially overlaps with the orthographic projection of the photosensitive opening and / or the pixel opening on the substrate, and the connection electrode is located between the first electrode and the substrate.

[0039] In an embodiment of the present application, the connection electrode is made of the same material as the first electrode.

[0040] An embodiment of the second aspect of the present application further provides a method for manufacturing a display panel, including:

[0041] Forming a pixel definition layer on one side of the substrate, patterning the pixel definition layer to form a pixel defining portion and a plurality of defining openings surrounded by the pixel defining portion. The defining openings include a pixel opening and a photosensitive opening, and the pixel defining portion includes a first sidewall facing one side of each defining opening;

[0042] Forming a first electrode layer on one side of the substrate and on the side of the pixel definition layer facing away from the substrate. The first electrode layer covers the first sidewall, and patterning the first electrode layer to form a first electrode located in at least a portion of the area where the defining openings are located, and at least one first electrode covers at least a portion of the first sidewall;

[0043] Forming a light-emitting structure in the pixel opening and a photosensitive structure in the photosensitive opening.

[0044] In an embodiment of the present application, before the step of forming a pixel definition layer on one side of the substrate, it includes:

[0045] Forming a first light-emitting electrode and a connection electrode arranged at intervals on one side of the substrate;

[0046] In the step of forming a pixel definition layer on one side of the substrate, it further includes: patterning the pixel definition layer to form a pixel defining portion and a plurality of defining openings surrounded by the pixel defining portion. The defining openings include a pixel opening and a photosensitive opening, and the pixel opening exposes at least a portion of the first light-emitting electrode, and the photosensitive opening exposes at least a portion of the connection electrode;

[0047] In the step of forming a first electrode layer on one side of the substrate and on the side of the pixel definition layer facing away from the substrate, it further includes: patterning the first electrode layer to form a first photosensitive electrode located in at least a portion of the area where the photosensitive openings are located, and at least one first photosensitive electrode covers at least a portion of the first sidewall.

[0048] In the embodiments of the present application, before forming the light-emitting structure in the pixel opening and the photosensitive structure in the photosensitive opening, the following steps are further included: forming an isolation portion on the side of the pixel defining portion facing away from the substrate, and the isolation portion covers the edge of the first photosensitive electrode along the direction away from the photosensitive opening.

[0049] The embodiments of the third aspect of the present application further provide a display device, including the display panel in any one of the embodiments of the first aspect above, or the display panel prepared by the manufacturing method in any one of the embodiments of the second aspect above.

[0050] In the embodiments of the present application, at least one first electrode may cover the first sidewall facing the pixel opening, and at least one first electrode may also cover the first sidewall facing the photosensitive opening, so as to reduce the light emitted by the light-emitting structure from passing through the first sidewall and entering the photosensitive opening, thereby improving the photosensitive accuracy of the photosensitive structure and thus improving the performance of the display panel. Description of the Drawings

[0051] 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 represent the same or similar features.

[0052] Figure 1 is a schematic structural diagram of a display panel provided by an embodiment of the present application;

[0053] Figure 2 is Figure 1 the cross-sectional view at AA in;

[0054] Figure 3 is Figure 1 the cross-sectional view at BB in;

[0055] Figure 4 is a schematic structural diagram of another display panel provided by an embodiment of the present application;

[0056] Figure 5 is a schematic structural diagram of another display panel provided by an embodiment of the present application;

[0057] Figure 6 is a schematic structural diagram of another display panel provided by an embodiment of the present application;

[0058] Figure 7 is a schematic structural diagram of another display panel provided by an embodiment of the present application;

[0059] Figure 8 is a schematic structural diagram of another display panel provided by an embodiment of the present application;

[0060] Figure 9It is a schematic structural diagram of another display panel provided by an embodiment of the present application;

[0061] Figure 10 It is a flowchart of a manufacturing method of a display panel provided by an embodiment of the present application;

[0062] Figures 11 to 12 It is a schematic diagram of the process of a manufacturing method of a display panel provided by an embodiment of the present application.

[0063] Description of reference numerals: 100, substrate; 200, pixel definition layer; 210, pixel defining part; 211, first side wall; 212, first surface; 213, sub-side wall; 220, defining opening; 221, pixel opening; 222, photosensitive opening; 300, first electrode layer; 310, first electrode; 311, first photosensitive electrode; 312, first light-emitting electrode; 313, connecting electrode; 410, light-emitting structure; 411, second common part; 412, light-emitting material layer; 420, photosensitive structure; 421, first common part; 422, photosensitive material layer; 500, isolation part; 510, isolation opening; 600, second electrode layer; 610, second light-emitting electrode; 620, second photosensitive electrode; 700, encapsulation layer. Detailed Description of the Invention

[0064] 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 description of the embodiments is merely provided to better understand 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.

[0065] 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.

[0066] The directional 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.

[0067] 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 200, a first electrode layer 300, and a functional layer. The pixel definition layer 200 is disposed on one side of the substrate 100. The pixel definition layer 200 includes pixel defining portions 210 and a plurality of defining openings 220 surrounded by the pixel defining portions 210. The defining openings 220 include pixel openings 221 and photosensitive openings 222 adjacent to the pixel openings 221. The first electrode layer 300 and the pixel definition layer 200 are disposed on the same side of the substrate 100 and include a plurality of first electrodes 310 arranged at intervals. The orthographic projection of each first electrode 310 on the substrate 100 and the orthographic projection of each defining opening 220 on the substrate 100 at least partially overlap. The functional layer includes a light-emitting structure 410 located in the pixel opening 221 and a photosensitive structure 420 located in the photosensitive opening 222. Wherein, the pixel defining portion 210 includes a first sidewall 211 facing one side of the pixel opening 221 and / or the photosensitive opening 222, and at least one first electrode 310 covers at least a part of the first sidewall 211.

[0068] In this embodiment, a plurality of defining openings 220 are surrounded by the pixel defining portions 210. The defining openings 220 include pixel openings 221 and photosensitive openings 222. Among them, a light-emitting structure 410 for emitting light is formed in the pixel openings 221, and a photosensitive structure 420 for photosensing is formed in the photosensitive openings 222. The first electrode layer 300 includes a plurality of first electrodes 310 arranged at intervals. The orthographic projection of a part of the first electrodes 310 on the substrate 100 and the orthographic projection of the pixel openings 221 on the substrate 100 at least partially overlap to drive the light-emitting structure 410, and the orthographic projection of another part of the first electrodes 310 on the substrate 100 and the orthographic projection of the photosensitive openings 222 on the substrate 100 at least partially overlap to drive the photosensitive structure 420. The pixel defining portion 210 includes a first sidewall 211 facing one side of the pixel opening 221 and / or the photosensitive opening 222, that is, the pixel defining portion 210 has a first sidewall 211 facing one side of the pixel opening 221 and a first sidewall 211 facing one side of the photosensitive opening 222. At least one first electrode 310 covers at least a part of the first sidewall 211, such as Figure 3As shown, at least one first electrode 310 may be the first sidewall 211 covering the side facing the pixel opening 221, such as Figure 2 As shown, at least one first electrode 310 may also be the first sidewall 211 covering the side facing the photosensitive opening 222, so as to reduce the outgoing light a of the light-emitting structure 410 from entering the photosensitive opening 222 through the first sidewall 211. The outgoing light a of the light-emitting structure 410 is transmitted through the first sidewall 211 to the first electrode 310 located in the photosensitive opening 222 to form a reflected light b, so as to improve the photosensitive accuracy of the photosensitive structure 420, thereby improving the use performance of the display panel.

[0069] Optionally, when the number of the first electrodes 310 is multiple, each first electrode 310 may cover the first sidewall 211 of each side facing the pixel opening 221, or each first electrode 310 may cover the first sidewall 211 of each side facing the photosensitive opening 222. Or, as Figure 4 As shown, each first electrode 310 may cover the first sidewall 211 of each side facing the pixel opening 221 and the photosensitive opening 222.

[0070] As Figure 2 As shown, in some optional embodiments, the first electrode 310 includes a first photosensitive electrode 311. At least part of the first photosensitive electrode 311 is located in the photosensitive opening 222, and the first photosensitive electrode 311 covers at least part of the first sidewall 211.

[0071] In these optional embodiments, the first electrode 310 includes a first photosensitive electrode 311. At least part of the first photosensitive electrode 311 is located in the photosensitive opening 222 to drive the photosensitive structure 420, and the first photosensitive electrode 311 covers at least part of the first sidewall 211 of the pixel defining portion 210 facing the photosensitive opening 222, so as to reduce the outgoing light of the light-emitting structure 410 from entering the photosensitive opening 222 through the first sidewall 211 and affecting the photosensitive accuracy of the photosensitive structure 420.

[0072] Optionally, as Figure 5 As shown, at least one first photosensitive electrode 311 covers part of the first sidewall 211 of the photosensitive opening 222 facing the adjacent pixel opening 221, so as to reduce the outgoing light of the light-emitting structure 410 from entering the photosensitive opening 222 through the first sidewall 211.

[0073] Optionally, the material of the first photosensitive electrode 311 includes a light-shielding material.

[0074] Optionally, the material of the first photosensitive electrode 311 includes a metal material.

[0075] Optionally, the material of the first photosensitive electrode 311 includes silver or aluminum, etc. Silver or aluminum has a low resistivity and has a good reflection effect on light.

[0076] As shown Figure 2 In some alternative embodiments, the pixel defining portion 210 includes a first surface 212 on a side facing away from the substrate 100, and the first photosensitive electrode 311 extends from the photosensitive opening 222 to the first surface 212.

[0077] In these alternative embodiments, the first photosensitive electrode 311 covers the first sidewall 211 of the pixel defining portion 210 facing the photosensitive opening 222 and extends along the first sidewall 211 to the first surface 212, which can increase the coverage area of the first photosensitive electrode 311 and improve the light shielding effect. Moreover, the first photosensitive electrode 311 extends to the first surface 212, thereby increasing the surface area of the first photosensitive electrode 311, and thus improving the ability of the first photosensitive electrode 311 to receive and reflect light. Optionally, as shown Figure 2 The first sidewall 211 is disposed around the photosensitive opening 222, the first photosensitive electrode 311 covers the first sidewall 211, and the first photosensitive electrode 311 covers all of the first sidewalls 211 of the pixel defining portion 210 facing the photosensitive opening 222, thereby improving the ability of the first photosensitive electrode 311 to receive and reflect light.

[0078] Optionally, as shown Figure 2 The photosensitive structure 420 is located on a side of the first photosensitive electrode 311 facing away from the substrate 100, and the photosensitive structure 420 covers a side of the first photosensitive electrode 311 facing away from the first sidewall 211, thereby increasing the coverage area of the photosensitive structure 420 and improving the photosensitivity of the photosensitive structure 420.

[0079] Optionally, as shown Figure 2 The photosensitive structure 420 covers a side of the first photosensitive electrode 311 facing away from the first surface 212, thereby further increasing the coverage area of the photosensitive structure 420 and improving the photosensitivity of the photosensitive structure 420.

[0080] Optionally, as shown Figure 2 The photosensitive structure 420 includes a first common portion 421 and a photosensitive material layer 422 which are stacked. The first common portion 421 is located on both sides of the photosensitive material layer 422 facing and away from the substrate 100.

[0081] Optionally, the first common portion 421 includes an electron injection layer and an electron transport layer which are stacked on one side of the photosensitive material layer 422, and the first common portion 421 further includes a hole injection layer and a hole transport layer which are stacked on the other side of the photosensitive material layer 422.

[0082] Optionally, as shown Figure 2As shown, the light emitting structure 410 includes a second common portion 411 and a light emitting material layer 412 which are stacked, and the second common portion 411 extends to the first surface 212 and is connected to the first common portion 421. The second common portion 411 is located on both sides of the light emitting material layer 412 facing and away from the substrate 100. The second common portion 411 includes an electron injection layer and an electron transport layer which are stacked and located on one side of the light emitting material layer 412, and the second common portion 411 also includes a hole injection layer and a hole transport layer which are stacked and located on the other side of the light emitting material layer 412. The first common portion 421 and the second common portion 411 include the same film layer, so that the first common portion 421 and the second common portion 411 can be prepared and formed in the same layer in the same process, and the second common portion 411 extends to the first surface 212 and is connected to the first common portion 421.

[0083] like Figure 2 As shown, in some optional embodiments, the display panel also includes an isolation portion 500, which is arranged on the side of the pixel defining portion 210 away from the substrate 100, and the isolation portion 500 encloses an isolation opening 510, and the orthographic projection of the isolation opening 510 on the substrate 100 at least partially overlaps with the orthographic projection of the first photosensitive electrode 311 on the substrate 100.

[0084] In these optional embodiments, the isolation portion 500 is disposed on the side of the pixel defining portion 210 away from the substrate 100, and the first photosensitive electrode 311 is surrounded by the isolation portion 500 to form an isolation opening 510, and the isolation portion 500 can reduce the emission of the light emitting structure 410 from the first photosensitive electrode 311, and the isolation portion 500 shields the edge tip of the first photosensitive electrode 311. In addition, in the evaporation process, the isolation portion 500 can reduce the friction between the substrate 100 and the metal mask during evaporation.

[0085] Optional, such as Figure 2 As shown, the orthographic projection of the first photosensitive electrode 311 on the substrate 100 is located within the orthographic projection of the isolation opening 510 on the substrate 100 , thereby improving the shielding effect of the isolation portion 500 on the outgoing light of the light emitting structure 410 directed toward the first photosensitive electrode 311 .

[0086] Optional, such as Figure 6 As shown, the isolation portion 500 covers the edge of the first photosensitive electrode 311 in a direction away from the photosensitive opening 222 , so that the isolation portion 500 can cover the edge tip of the first photosensitive electrode 311 .

[0087] Optional, such as Figure 2As shown, the photosensitive structure 420 includes a first common portion 421 and a photosensitive material layer 422 arranged in a stacked manner. The orthographic projection of the photosensitive material layer 422 on the substrate 100 is located within the orthographic projection of the isolation opening 510 on the substrate 100, so as to improve the shielding effect of the isolation portion 500 on the emitted light of the light-emitting structure 410 from hitting the photosensitive material layer 422.

[0088] Optionally, as Figure 2 shown, the first common portion 421 extends from within the isolation opening 510 to cover the side of the isolation portion 500 facing away from the substrate 100, so that it can be connected to the second common portion 411.

[0089] Optionally, the isolation portion 500 includes a light-shielding material, so as to improve the light shielding effect of the isolation portion 500.

[0090] As Figure 7 and Figure 8 shown, in some optional embodiments, the first electrode 310 includes a first light-emitting electrode 312. At least a part of the first light-emitting electrode 312 is located within the pixel opening 221, and the first light-emitting electrode 312 covers at least a part of the first sidewall 211.

[0091] In these optional embodiments, the first electrode 310 includes a first light-emitting electrode 312. At least a part of the first light-emitting electrode 312 is located within the pixel opening 221 to drive the light-emitting structure 410. Optionally, the first light-emitting electrode 312 covers at least a part of the first sidewall 211 of the pixel defining portion 210 facing the adjacent pixel opening 221, so as to reduce the emitted light of the light-emitting structure 410 from passing through the first sidewall 211 and entering the photosensitive opening 222, affecting the photosensitive accuracy of the photosensitive structure 420. Moreover, the first light-emitting electrode 312 can reflect part of the large-angle light emitted by the light-emitting structure 410, so as to reduce the large-angle light emission to form an anti-peeping screen. Optionally, the material of the first light-emitting electrode 312 includes a light-shielding material.

[0092] Optionally, the material of the first light-emitting electrode 312 includes a metal material.

[0093] Optionally, the material of the first light-emitting electrode 312 includes silver or aluminum, etc. Silver or aluminum has a low resistivity and has a good reflection effect on light.

[0094] Optionally, as Figure 3 shown, the first sidewall 211 is arranged to surround the pixel opening 221, the first light-emitting electrode 312 covers all of the first sidewall 211, and the first light-emitting electrode 312 can reflect part of the large-angle light emitted by the light-emitting structure 410, so as to reduce the large-angle light emission.

[0095] As Figure 3As shown, in some alternative embodiments, the pixel defining portion 210 includes a first surface 212 on a side facing away from the substrate 100. A part of the first light-emitting electrode 312 is located within the pixel opening 221, and the first light-emitting electrode 312 extends to the first surface 212. The light-emitting structure 410 is located on a side of the first light-emitting electrode 312 facing away from the substrate 100, and the light-emitting structure 410 covers a side of the first light-emitting electrode 312 facing away from the first sidewall 211.

[0096] In these alternative embodiments, the first light-emitting electrode 312 covers the first sidewall 211 on a side of the pixel defining portion 210 facing the pixel opening 221 and extends along the first sidewall 211 to the first surface 212, which can increase the coverage area of the first light-emitting electrode 312 and improve the display effect.

[0097] Optionally, as Figure 3 shown, the isolation portion 500 is disposed on a side of the pixel defining portion 210 facing away from the substrate 100. The isolation portion 500 encloses an isolation opening 510. A positive projection of the isolation opening 510 on the substrate 100 overlaps at least partially with a positive projection of the first light-emitting electrode 312 on the substrate 100. The isolation portion 500 shields the edge tip of the first light-emitting electrode 312. And during the evaporation process, the isolation portion 500 can reduce the friction between the substrate 100 and the metal mask.

[0098] Optionally, as Figure 9 shown, the isolation portion 500 covers an edge of the first light-emitting electrode 312 in a direction away from the pixel opening 221, so that the isolation portion 500 covers the edge tip of the first light-emitting electrode 312.

[0099] Optionally, as Figure 3 shown, the light-emitting structure 410 covers a side of the first light-emitting electrode 312 facing away from the first surface 212, further increasing the surface area of the light-emitting structure 410 and improving the display effect of the display panel.

[0100] As Figure 7 and Figure 8 shown, in some alternative embodiments, the first sidewall 211 includes a plurality of sub-sidewalls 213 distributed around the pixel opening 221, and the first light-emitting electrode 312 covers some of the sub-sidewalls 213.

[0101] In these alternative embodiments, the first light-emitting electrode 312 covers some of the sub-sidewalls 213, so as to reflect part of the large-angle light emitted by the light-emitting structure 410 within a certain range, so as to form a single-sided or multi-sided privacy screen.

[0102] Optionally, as Figure 7 and Figure 8As shown, the pixel opening 221 and the photosensitive opening 222 are arranged adjacent to each other. The first light-emitting electrode 312 covers the sub-sidewall 213 on the side of the pixel opening 221 facing the photosensitive opening 222, thereby reducing the light of the light-emitting structure 410 passing through the sub-sidewall 213 near the photosensitive opening 222, and thus reducing the light emitted by the light-emitting structure 410 passing through the sub-sidewall 213 and entering the photosensitive opening 222, which affects the photosensitive accuracy of the photosensitive structure 420.

[0103] Optionally, as Figure 7 and Figure 8 shown, the first sidewall 211 includes four sub-sidewalls 213 arranged around the pixel opening 221. The first light-emitting electrode 312 covers one sub-sidewall 213, thereby forming a single-sided privacy screen.

[0104] As Figure 2 shown, in some alternative embodiments, the display panel further includes a second electrode layer 600. The second electrode layer 600 includes a second light-emitting electrode 610 located on the side of the light-emitting structure 410 facing away from the substrate 100 and a second photosensitive electrode 620 located on the side of the photosensitive structure 420 facing away from the substrate 100. The second light-emitting electrode 610 and the second photosensitive electrode 620 are connected to each other on the side of the pixel defining portion 210 facing away from the substrate 100.

[0105] In these alternative embodiments, the second electrode layer 600 can be provided as a whole layer. The second electrode layer 600 includes a second light-emitting electrode 610 located on the side of the light-emitting structure 410 facing away from the substrate 100, and a second photosensitive electrode 620 located on the side of the photosensitive structure 420 facing away from the substrate 100. The second light-emitting electrode 610 and the second photosensitive electrode 620 are connected to each other on the side of the pixel defining portion 210 facing away from the substrate 100, thereby simplifying the production process.

[0106] Optionally, as Figure 2 shown, the display panel further includes a packaging layer 700. The packaging layer 700 is packaged on the side of the second electrode layer 600 facing away from the substrate 100, thereby reducing the entry of water, oxygen, etc. into the light-emitting structure 410 and the photosensitive structure 420.

[0107] As Figure 2 shown, in some alternative embodiments, the display panel further includes a connecting electrode 313. The orthographic projection of the connecting electrode 313 on the substrate 100 at least partially overlaps with the orthographic projection of the photosensitive opening 222 on the substrate 100. The connecting electrode 313 is located between the first electrode 310 and the substrate 100.

[0108] In these alternative embodiments, the first electrode 310 located at the photosensitive opening 222 can be electrically connected to the driving circuit in the substrate 100 through the connection electrode 313. Optionally, the connection electrode 313 is made of the same material as the first electrode 310. During the fabrication of the display panel, the first electrode 310 located in the area of the pixel opening 221 can be formed in the same process as the connection electrode 313. The connection electrode 313 is connected to the driving circuit of the substrate 100 through a via. Subsequently, the pixel definition layer 200 is fabricated and the photosensitive opening 222 and the pixel opening 221 are formed. The first electrode 310 is formed in the area of the photosensitive opening 222 so that the first electrode 310 is electrically connected to the driving circuit through the connection electrode 313.

[0109] In some other alternative embodiments, the orthographic projection of the connection electrode 313 on the substrate 100 overlaps at least partially with the orthographic projection of the pixel opening 221 on the substrate 100, and the connection electrode 313 is located between the first electrode 310 and the substrate 100.

[0110] In these alternative embodiments, the first electrode 310 located at the pixel opening 221 can be electrically connected to the driving circuit in the substrate 100 through the connection electrode 313. Optionally, the connection electrode 313 is made of the same material as the first electrode 310. During the fabrication of the display panel, the first electrode 310 located in the area of the photosensitive opening 222 can be formed in the same process as the connection electrode 313. The connection electrode 313 is connected to the driving circuit of the substrate 100 through a via. Subsequently, the pixel definition layer 200 is fabricated and the photosensitive opening 222 and the pixel opening 221 are formed. The first electrode 310 is formed in the area of the pixel opening 221 so that the first electrode 310 is electrically connected to the driving circuit through the connection electrode 313.

[0111] As Figure 4 shown, in still some other alternative embodiments, the orthographic projection of the connection electrode 313 on the substrate 100 overlaps at least partially with the orthographic projections of the pixel opening 221 and the photosensitive opening 222 on the substrate 100, and the connection electrode 313 is located between the first electrode 310 and the substrate 100.

[0112] Optionally, as Figure 2 shown, the substrate 100 includes a driving circuit, and the driving circuit includes a first thin-film transistor and a second thin-film transistor. The first thin-film transistor is electrically connected to the first electrode 310 located at the pixel opening 221, and the second thin-film transistor is electrically connected to the connection electrode 313. The first thin-film transistor is electrically connected to the first electrode 310 located at the pixel opening 221 to drive the light-emitting structure 410 to emit light, and the second thin-film transistor is electrically connected to the connection electrode 313 and electrically connected to the first electrode 310 located at the photosensitive opening 222 through the connection electrode 313 to drive the photosensitive structure 420.

[0113] The second aspect of the present application also provides a method for manufacturing a display panel. Figure 10 As shown, the following steps are included:

[0114] Step S01: Figure 11 As shown, a pixel definition layer 200 is formed on one side of the substrate 100, and the patterned pixel definition layer 200 forms a pixel defining portion 210 and a plurality of defining openings 220 enclosed by the pixel defining portion 210, the defining openings 220 include a pixel opening 221 and a photosensitive opening 222, and the pixel defining portion 210 includes a first side wall 211 facing one side of each defining opening 220.

[0115] Step S02: Figure 12 As shown, a first electrode layer 300 is formed on one side of the substrate 100 and on the side of the pixel definition layer 200 facing away from the substrate 100, the first electrode layer 300 covers the first side wall 211, and the patterned first electrode layer 300 forms a first electrode 310 located in an area where at least part of the opening 220 is defined, and at least one first electrode 310 covers at least part of the first side wall 211.

[0116] Step S03: Figure 2 As shown, a light emitting structure 410 is formed in the pixel opening 221 , and a photosensitive structure 420 is formed in the photosensitive opening 222 .

[0117] In these alternative embodiments, the pixel defining portion 210 includes a first sidewall 211 facing one side of the pixel opening 221, and the pixel defining portion 210 further includes a first sidewall 211 facing one side of the photosensitive opening 222. The material of the first electrode layer 300 is formed on one side of the substrate 100 and on the side of the pixel defining layer 200 facing away from the substrate 100, and the material of the first electrode layer 300 covers the first sidewall 211. The first electrode layer 300 is patterned to form a first electrode 310 located in the region where at least part of the defining opening 220 is located. The first electrode 310 may be located in each pixel opening 221 or each photosensitive opening 222, or the first electrode 310 may be located in each pixel opening 221 and each photosensitive opening 222. At least one first electrode 310 covers at least part of the first sidewall 211. The first electrode 310 may be a first light-emitting electrode 312 covering the first sidewall 211 facing one side of the pixel opening 221, or may be a first photosensitive electrode 311 covering the first sidewall 211 facing one side of the photosensitive opening 222, thereby reducing the outgoing light of the light-emitting structure 410 from passing through the first sidewall 211 and entering the photosensitive opening 222, so as to improve the photosensitive accuracy of the photosensitive structure 420, and thus improve the performance of the display panel. Optionally, the number of the first electrodes 310 is multiple. Each first electrode 310 may cover each first sidewall 211 facing one side of the pixel opening 221, or each first electrode 310 may cover each first sidewall 211 facing one side of the photosensitive opening 222. Or, each first electrode 310 may cover each first sidewall 211 facing one side of the pixel opening 221 and the photosensitive opening 222.

[0118] Optionally, as Figure 3 shown, the first electrode layer 300 is patterned to form a first light-emitting electrode 312 located in the pixel opening 221. The first light-emitting electrode 312 covers the first sidewall 211 of the pixel defining portion 210 facing one side of the pixel opening 221, thereby reducing the outgoing light of the light-emitting structure 410 from passing through the first sidewall 211 and entering the photosensitive opening 222.

[0119] Optionally, as Figure 2 shown, the first electrode layer 300 is patterned to form a first photosensitive electrode 311 located in the photosensitive opening 222. The first photosensitive electrode 311 covers the first sidewall 211 of the pixel defining portion 210 facing one side of the photosensitive opening 222, thereby reducing the outgoing light of the light-emitting structure 410 from passing through the first sidewall 211 and entering the photosensitive opening 222.

[0120] Optionally, as Figure 4As shown, the patterned first electrode layer 300 forms a first light-emitting electrode 312 located in the pixel opening 221 and a first photosensitive electrode 311 located in the photosensitive opening 222. The first light-emitting electrode 312 covers the first sidewall 211 of the pixel defining portion 210 facing the pixel opening 221, and the first photosensitive electrode 311 covers the first sidewall 211 of the pixel defining portion 210 on the side facing the photosensitive opening 222, thereby reducing the light emitted by the light-emitting structure 410 from passing through the first sidewall 211 and entering the photosensitive opening 222.

[0121] In some alternative embodiments, before step S01, it includes: as Figure 2 shown, a first light-emitting electrode 312 and a connection electrode 313 are formed on one side of the substrate 100 at intervals.

[0122] In step S01, it further includes: as Figure 2 shown, the patterned pixel definition layer 200 forms a pixel defining portion 210 and a plurality of defining openings 220 enclosed by the pixel defining portion 210. The defining openings 220 include a pixel opening 221 and a photosensitive opening 222. The pixel opening 221 exposes at least a part of the first light-emitting electrode 312, and the photosensitive opening 222 exposes at least a part of the connection electrode 313.

[0123] In step S02, it further includes: as Figure 2 shown, the patterned first electrode layer 300 forms a first photosensitive electrode 311 located in at least a part of the area where the photosensitive opening 222 is located, and at least one first photosensitive electrode 311 covers at least a part of the first sidewall 211.

[0124] In these alternative embodiments, the first photosensitive electrode 311 located in the photosensitive opening 222 can be electrically connected to the driving circuit in the substrate 100 through the connection electrode 313. Optionally, the connection electrode 313 is made of the same material as the first electrode 310. During the manufacturing process of the display panel, the first light-emitting electrode 312 located in the area where the pixel opening 221 is located can be formed in the same process as the connection electrode 313. The connection electrode 313 is connected to the driving circuit of the substrate 100 through a via. Subsequently, the pixel definition layer 200 is fabricated and the photosensitive opening 222 and the pixel opening 221 are formed. The first photosensitive electrode 311 is formed in the area where the photosensitive opening 222 is located so that the first photosensitive electrode 311 is electrically connected to the driving circuit through the connection electrode 313.

[0125] Optionally, before step S03, it further includes: as Figure 6 shown, an isolation portion 500 is formed on the side of the pixel defining portion 210 facing away from the substrate 100. The isolation portion 500 covers the edge of the first photosensitive electrode 311 in the direction away from the photosensitive opening 222, so that the isolation portion 500 covers the edge tip of the first photosensitive electrode 311.

[0126] An embodiment of the third aspect of the present application further provides a display device, including a display panel prepared by the manufacturing method of the display panel in any of the above-mentioned first aspect embodiments or the second aspect embodiments. Since the display device provided by the embodiment of the third aspect of the present application includes the display panel in any of the above-mentioned first aspect or second aspect embodiments, the display device provided by the embodiment of the third aspect of the present application has the beneficial effects of the display panel in any of the above-mentioned first aspect or second aspect embodiments, which will not be elaborated herein.

[0127] The display device in the embodiment 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 systems, smart landline phones, consoles, etc.

[0128] 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: include: substrate; A pixel definition layer is disposed on one side of the substrate, the pixel definition layer includes a pixel definition portion and a plurality of definition openings formed by the pixel definition portion, the definition openings include a pixel opening and a photosensitive opening adjacent to the pixel opening; A first electrode layer, disposed on the same side of the substrate as the pixel definition layer and comprising a plurality of first electrodes disposed at intervals, wherein an orthographic projection of each of the first electrodes on the substrate and an orthographic projection of each of the defined openings on the substrate at least partially overlap; The functional layer includes a light-emitting structure located in the pixel opening and a photosensitive structure located in the photosensitive opening; the pixel defining portion includes a first side wall facing the pixel opening and / or the photosensitive opening, and at least one of the first electrodes covers at least a portion of the first side wall.

2. The display panel according to claim 1, characterized in that: The first electrode comprises a first photosensitive electrode, at least a portion of the first photosensitive electrode is located in the photosensitive opening, and the first photosensitive electrode covers at least a portion of the first side wall; Preferably, at least one of the first photosensitive electrodes covers a portion of the first side wall of the photosensitive opening facing the adjacent pixel opening; Preferably, the material of the first photosensitive electrode includes a light-shielding material; Preferably, the material of the first photosensitive electrode includes silver or aluminum; Preferably, the pixel defining portion includes a first surface facing away from the substrate, and part of the first photosensitive electrode extends from the photosensitive opening to the first surface; Preferably, the first side wall is arranged around the photosensitive opening, and the first photosensitive electrode covers the first side wall; Preferably, the photosensitive structure is located on a side of the first photosensitive electrode away from the substrate, and the photosensitive structure covers a side of the first photosensitive electrode away from the first side wall; Preferably, the photosensitive structure covers a side of the first photosensitive electrode facing away from the first surface; Preferably, the photosensitive structure comprises a first common portion and a photosensitive material layer which are stacked; Preferably, the light emitting structure comprises a second common portion and a light emitting material layer which are stacked, and the second common portion extends to the first surface and is connected to the first common portion.

3. The display panel according to claim 2, characterized in that: The display panel further includes an isolation portion, the isolation portion is disposed on a side of the pixel defining portion away from the substrate, the isolation portion encloses an isolation opening, and an orthographic projection of the isolation opening on the substrate at least partially overlaps with an orthographic projection of the first photosensitive electrode on the substrate; Preferably, the orthographic projection of the first photosensitive electrode on the substrate is located within the orthographic projection of the isolation opening on the substrate; Preferably, the isolation portion at least partially covers an edge of the first photosensitive electrode along a direction away from the photosensitive opening; Preferably, the photosensitive structure comprises a first common portion and a photosensitive material layer which are stacked, and an orthographic projection of the photosensitive material layer on the substrate is located within an orthographic projection of the isolation opening on the substrate; Preferably, the first common portion extends from the isolation opening to cover a side of the isolation portion away from the substrate; Preferably, the isolation portion comprises a light-shielding material.

4. The display panel according to claim 1, characterized in that: The first electrode comprises a first light emitting electrode, at least a portion of the first light emitting electrode is located in the pixel opening, and the first light emitting electrode covers at least a portion of the first side wall; Preferably, at least one of the first light-emitting electrodes covers a portion of the first side wall of the pixel opening facing the adjacent photosensitive opening; Preferably, the material of the first light-emitting electrode includes a light-shielding material; Preferably, the material of the first light-emitting electrode includes silver or aluminum; Preferably, the first side wall is arranged around the pixel opening, and the first light emitting electrode covers the first side wall.

5. The display panel according to claim 4, characterized in that: The pixel defining portion includes a first surface facing away from the substrate, a portion of the first light emitting electrode is located in the pixel opening, and the first light emitting electrode extends to the first surface; The light emitting structure is located on a side of the first light emitting electrode away from the substrate, and the light emitting structure covers a side of the first light emitting electrode away from the first side wall; Preferably, the light-emitting structure covers a side of the first light-emitting electrode away from the first surface; Preferably, the light emitting structure comprises a second common portion and a light emitting material layer which are stacked; Preferably, the photosensitive structure comprises a first common portion and a photosensitive material layer which are stacked, wherein the first common portion extends to the first surface and is connected to the second common portion; Preferably, the display panel further comprises an isolation portion disposed on a side of the pixel defining portion away from the substrate, the isolation portion encloses an isolation opening, and an orthographic projection of the isolation opening on the substrate at least partially overlaps with an orthographic projection of the first light-emitting electrode on the substrate; Preferably, the isolation portion at least partially covers an edge of the first light-emitting electrode along a direction away from the pixel opening.

6. The display panel according to claim 4, characterized in that: The first side wall includes a plurality of sub-side walls distributed around the pixel opening, and the first light emitting electrode covers a portion of the sub-side walls; Preferably, the pixel opening is arranged adjacent to the photosensitive opening, and the first light-emitting electrode covers the sub-side wall of the pixel opening facing the photosensitive opening; Preferably, the first side wall includes four sub-side walls arranged around the pixel opening, and the first light emitting electrode covers one of the sub-side walls.

7. The display panel according to claim 1, characterized in that: The display panel further includes a second electrode layer, the second electrode layer including a second light-emitting electrode located at a side of the light-emitting structure away from the substrate and a second photosensitive electrode located at a side of the photosensitive structure away from the substrate, the second light-emitting electrode and the second photosensitive electrode being connected to each other at a side of the pixel defining portion away from the substrate; Preferably, the display panel further comprises an encapsulation layer, wherein the encapsulation layer is encapsulated on a side of the second electrode layer facing away from the substrate.

8. The display panel according to claim 1, characterized in that: The display panel further comprises a connecting electrode, the orthographic projection of the connecting electrode on the substrate at least partially overlaps with the orthographic projection of the photosensitive opening and / or the pixel opening on the substrate, and the connecting electrode is located between the first electrode and the substrate; Preferably, the connecting electrode is made of the same material as the first electrode.

9. A method for manufacturing a display panel, characterized in that: include: Forming a pixel definition layer on one side of the substrate, patterning the pixel definition layer to form a pixel definition portion and a plurality of definition openings enclosed by the pixel definition portion, wherein the definition openings include a pixel opening and a photosensitive opening, and the pixel definition portion includes a first side wall facing one side of each of the definition openings; A first electrode layer is formed on one side of the substrate and on a side of the pixel definition layer facing away from the substrate, the first electrode layer covers the first side wall, and the first electrode layer is patterned to form a first electrode located in at least a portion of the area where the defined opening is located, and at least one of the first electrodes covers at least a portion of the first side wall; A light emitting structure is formed in the pixel opening, and a photosensitive structure is formed in the photosensitive opening.

10. The manufacturing method according to claim 9, characterized in that: include: Before the step of forming a pixel definition layer on one side of the substrate, the method includes: Forming a first light-emitting electrode and a connecting electrode spaced apart on one side of the substrate; The step of forming a pixel definition layer on one side of the substrate further includes: patterning the pixel definition layer to form a pixel definition portion and a plurality of definition openings formed by the pixel definition portion, wherein the definition openings include a pixel opening and a photosensitive opening, wherein the pixel opening exposes at least a portion of the first light-emitting electrode, and the photosensitive opening exposes at least a portion of the connecting electrode; The step of forming a first electrode layer on one side of the substrate and on the side of the pixel definition layer facing away from the substrate further includes: patterning the first electrode layer to form a first photosensitive electrode located in at least a portion of the area where the photosensitive opening is located, at least one of the first photosensitive electrodes covers at least a portion of the first side wall; Preferably, the step of forming a light-emitting structure at the pixel opening and before forming a photosensitive structure at the photosensitive opening further includes: forming an isolation portion at the side of the pixel defining portion away from the substrate, the isolation portion at least partially covering an edge of the first photosensitive electrode along a direction away from the photosensitive opening.

11. A display device, characterized in that: A display panel comprising any one of claims 1 to 8, or a display panel prepared by the manufacturing method according to any one of claims 9 to 10.

Images