Display panel, display device, and method of manufacturing display panel

Abstract

The present application discloses a display panel, a display device, and a method for manufacturing a display panel, the display panel including a substrate, a first electrode layer, a pixel definition layer, and a second electrode layer, the first electrode layer being located on the substrate and including a first electrode; The pixel definition layer is located on a side of the first electrode layer facing away from the substrate and includes an isolation portion and a first opening surrounded by the isolation portion, at least a portion of the first electrode is exposed from the first opening, at least a portion of the second electrode layer is located on a side of the pixel definition layer facing away from the substrate, the second electrode layer includes a main portion and a hollow portion penetrating the main portion, and is provided so that the orthogonal projections of the hollow portion and the first electrode on the substrate do not overlap. In the manufacturing process of the display panel of the present application, the first electrode of the first electrode layer is used as a mask to form a hollow portion in the second electrode layer, thereby improving the light transmittance of the display panel.

Description

[Technical Field]

[0001] This application claims priority from Chinese Patent Application No. 202210960550.2, filed on August 9, 2022, entitled "Display Panel, Display Device and Method for Manufacturing Display Panel," the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the display field, and in particular to a display panel, a display device, and a method for manufacturing a display panel. [Background technology]

[0003] With the rapid development of electronic devices, users' requirements for screen occupancy rate are becoming higher and higher, and full-screen display of electronic devices is receiving more and more attention from the industry.

[0004] Conventional electronic devices, such as mobile phones and tablet computers, require the integration of a front camera, a handset, an infrared sensor, etc. In conventional technology, a notch or hole is provided in the display screen, allowing external light to enter the photosensitive element located below the screen through the notch or hole. However, these electronic devices are not truly full-screen and cannot display anything in every area of ​​the entire screen, for example, they cannot display an image in the area corresponding to the front camera. Summary of the Invention

[0005] The embodiments of the present application provide a display panel, a display device, and a method for manufacturing a display panel, in which at least a portion of the area is light-transmitting and displayable, facilitating under-screen integration of a photosensitive assembly.

[0006] An embodiment of a first aspect of the present application provides a display panel, the display panel including a substrate, a first electrode layer, a pixel definition layer, and a second electrode layer, the first electrode layer being located on the substrate and including a first electrode, the pixel definition layer being located on a side of the first electrode layer facing away from the substrate and including an isolation portion and a first opening surrounded by the isolation portion, at least a portion of the first electrode being exposed from the first opening, at least a portion of the second electrode layer being located on the side of the pixel definition layer facing away from the substrate, the second electrode layer including a main body portion and a hollow portion penetrating the main body portion, and being arranged so that orthogonal projections of the hollow portion and the first electrode on the substrate do not overlap.

[0020] An embodiment of a second aspect of the present application provides a display device including the display panel of any of the above embodiments.

[0021] An embodiment of a third aspect of the present application provides a method for manufacturing a display panel, the method comprising: forming a first conductive material layer on the substrate; layer forming a first electrode layer by patterning the first electrode layer, the first electrode layer including a first electrode; fabricating an insulating material layer on a side of the first electrode layer facing away from the substrate; patterning the insulating material layer to form a pixel definition layer, the pixel definition layer including an isolation portion and a first opening surrounded by the isolation portion, and at least a portion of the first electrode being exposed from the first opening; fabricating a second conductive material layer in the pixel definition layer; and performing a laser etching process on the second conductive material layer from the side of the substrate facing away from the first electrode layer to form a second electrode layer, the second electrode layer including a main body portion and a hollow portion penetrating the main body portion, and being arranged so that orthogonal projections of the hollow portion and the first electrode on the substrate do not overlap.

[0022] According to an embodiment of the present disclosure, the display panel includes a substrate, a first electrode layer disposed on the substrate, a pixel definition layer, and a second electrode layer. The first electrode layer includes a first electrode, and the second electrode layer includes a body portion and a hollow portion, such that the hollow portion does not overlap with the orthogonal projection of the first electrode on the substrate. In manufacturing the second electrode layer, the hollow portion can be formed by emitting laser light toward the second electrode layer from the side of the substrate away from the first electrode layer using the first electrode layer as a mask. Furthermore, by providing the hollow portion in the second electrode layer, the distribution area of ​​the body portion can be reduced, further improving the light transmittance of the display panel and enabling the integration of a photosensitive assembly on the non-display side of the display panel. Furthermore, one of the first and second electrode layers is disposed on one side of the pixel definition layer and the other on the other side of the pixel definition layer. The short distance between the first and second electrode layers prevents the edge of the body portion from folding back toward the hollow portion due to laser diffraction, thereby minimizing the impact on the packaging efficiency of the subsequent packaging process.

[0023] Therefore, in the manufacturing process of the display panel of the present embodiment, the first electrode layer is used as a mask to form a hollow in the second electrode layer, which improves the light transmittance of the display panel and facilitates under-screen integration of the photosensitive assembly. In addition, since the distance between the first electrode layer and the second electrode layer is short, it is possible to avoid the edge folding toward the hollow in the body due to laser diffraction, and thus avoid affecting the packaging effect in the subsequent packaging process. [Brief explanation of the drawings]

[0024] [Figure 1] 1 is a structural schematic diagram of a display panel according to an embodiment of the first aspect of the present application. [Figure 2] FIG. 2 is a cross-sectional view taken along line AA in FIG. [Figure 3] FIG. 2 is a cross-sectional view taken along line AA in FIG. 1 in another embodiment. [Figure 4] FIG. 2 is another cross-sectional view taken along line AA in FIG. [Figure 5] FIG. 2 is a cross-sectional view taken along line AA in FIG. 1 in yet another embodiment. [Figure 6] FIG. 2 is a partially enlarged schematic structural diagram of Q in FIG. [Figure 7] FIG. 2 is a cross-sectional view taken along line AA in FIG. 1 in yet another embodiment. [Figure 8] FIG. 2 is a partially enlarged structural schematic diagram of Q in FIG. 1 in yet another embodiment. [Figure 9] 10 is a flowchart of a method for manufacturing a display panel according to an embodiment of the third aspect of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0025] The following describes in detail the features and exemplary embodiments of each aspect of the present application. In order to clarify the objectives, technical solutions, and advantages of the present application, the present application will be described in more detail below with reference to the drawings and specific examples. It should be understood that the specific examples described herein are merely configured to illustrate the present application and are not configured to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the examples is provided merely to illustrate examples of the present application and to provide a better understanding of the present application.

[0026] For example, in electronic devices such as mobile phones and tablet computers, it is necessary to integrate a photosensitive assembly, such as a front camera, an infrared sensor, a proximity sensor, etc., on the side where the display panel is provided. In some embodiments, the electronic device has a light-transmitting display area, and the photosensitive assembly is provided behind the light-transmitting display area. When the photosensitive assembly is ensured to operate normally, a full-screen display of the electronic device can be realized.

[0027] In order to improve the light transmittance of the light-transmitting display area, some related arts employ a patterning process for the common electrode. By forming a hollow in the common electrode within the light-transmitting area of ​​the display panel, the light transmittance of the common electrode can be improved, and the light transmittance of the light-transmitting area of ​​the display panel can also be improved. In related arts, the patterning process for the common electrode is generally achieved by using a method such as laser ashing.

[0028] However, in related art, when patterning a common electrode by laser ashing, typically, an array film layer, a light-emitting layer, and a common electrode are formed on a substrate, and then a laser is irradiated onto the common electrode from the side of the substrate away from the array film layer, and a light-shielding metal layer in the array film layer is used as a mask to achieve laser etching and patterning of the common electrode. After laser etching and patterning of the common electrode, the edge of the common electrode is likely to fold back, which may affect subsequent processes such as thin-film packaging and affect the reliability of the packaging process.

[0029] In order to solve the above problems, embodiments of the present application provide a display panel, a display device, and a method for manufacturing a display panel. Hereinafter, each embodiment of the display panel, the display device, and the method for manufacturing a display panel will be described with reference to the drawings.

[0030] An embodiment of the present application provides a display panel, which may be an Organic Light Emitting Diode (OLED) display panel.

[0031] 1 and 2, FIG. 1 is a structural schematic diagram of a display panel 10 according to an embodiment of the first aspect of the present invention, and FIG. 2 is a cross-sectional view taken along line AA in FIG.

[0032] As shown in FIGS. 1 and 2, a display panel 10 according to an embodiment of the first aspect of the present invention includes a substrate 100, a first electrode layer 200, a pixel definition layer 300, and a second electrode layer 400. The first electrode layer 200 is located on the substrate 100, and the first electrode layer 200 includes a first electrode 210. The pixel definition layer 300 is located on a side of the first electrode layer 200 that is farther away from the substrate 100. The pixel definition layer 300 is surrounded by an isolation portion 310. and a first opening 320 formed by enclosing the first electrode 210, at least a portion of the first electrode 210 being exposed from the first opening 320, at least a portion of the second electrode layer 400 being located on a side of the pixel definition layer 300 facing away from the substrate 100, the second electrode layer 400 including a main body portion 410 and a hollow portion 420 penetrating the main body portion 410, the hollow portion 420 and the first electrode 210 being arranged so that their orthogonal projections on the substrate 100 do not overlap.

[0033] The present embodiment provides a display panel 10 including a substrate 100, a first electrode layer 200 provided on the substrate 100, a pixel defining layer 300, and a second electrode layer 400. The first electrode layer 200 includes a first electrode 210. The pixel defining layer 300 includes a first opening 320 and an isolation portion 310. A light-emitting unit (not shown) is provided in the first opening 320. The first electrode 210 is exposed through the first opening 320, so that the first electrode 210 can drive the light-emitting unit in the first opening 320 to emit light. The second electrode layer 400 includes a body portion 410 and a hollow portion 420. The hollow portion 420 and the first electrode 210 are arranged so that their orthogonal projections on the substrate 100 do not overlap, i.e., the hollow portion 420 and the first opening 320 are misaligned, thereby avoiding any adverse effect on the display effect of the display panel 10.

[0034] When manufacturing the second electrode layer 400 in the display panel 10 according to the present application, the first electrode layer 200 is used as a shielding layer, and for example, the first electrode 210 is used as a mask. A laser is emitted toward the second electrode layer 400 from the side of the substrate 100 that is away from the first electrode layer 200, and laser etching is performed on the second electrode layer 400 to form the hollow portion 420. Furthermore, by providing the hollow portion 420 in the second electrode layer 400, the distribution area of ​​the body portion 410 can be reduced, which further improves the light transmittance of the display panel 10 and allows a photosensitive assembly to be integrated on the non-display side of the display panel 10. In addition, one of the first electrode layer 200 and the second electrode layer 400 is provided on one side of the pixel definition layer 300, and the other is provided on the other side of the pixel definition layer 300, and the distance between the first electrode layer 200 and the second electrode layer 400 is short, which reduces or avoids the problem of the folding back of the edge of the body portion 410 toward the hollow portion 420 due to laser diffraction affecting the packaging effect of the subsequent packaging process, and ultimately the display effect of the display panel 10.

[0035] The display panel 10 according to the present invention has the following advantageous effects: By providing the hollow portion 420 in the second electrode layer 400, the distribution area of ​​the body portion 410 can be reduced, further improving the light transmittance of the display panel 10 and enabling the integration of a photosensitive assembly on the non-display side of the display panel 10. Furthermore, one of the first electrode layer 200 and the second electrode layer 400 is provided on one side of the pixel defining layer 300, and the other is provided on the other side of the pixel defining layer 300. The short distance between the first electrode layer 200 and the second electrode layer 400 prevents the edge of the body portion 410 from folding back toward the hollow portion 420 due to laser diffraction, thereby avoiding any adverse effects on the packaging effect in the subsequent packaging process.

[0036] The substrate 100 may be provided in various ways. For example, the substrate 100 may include a substrate and an array film layer provided on the substrate. Alternatively, the substrate 100 may be the substrate itself. Alternatively, the substrate 100 may further include a buffer layer and a support plate separated from the substrate.

[0037] The first electrode layer 200 is, for example, an anode layer, and the second electrode layer 400 is a cathode layer. When the light-emitting unit in the first opening 320 is driven to emit light by the first electrode layer 200 and the second electrode layer 400, the first electrode 210 in the first electrode layer 200 is an anode, and the main body 410 of the second electrode layer 400 is a cathode.

[0038] Preferably, the edge of the orthogonal projection of the first electrode 210 on the substrate 100 is located within the orthogonal projection of the isolation portion 310 on the substrate 100, and the orthogonal projection of each first opening 320 on the substrate 100 is located within the orthogonal projection of each first electrode 210 on the substrate 100, thereby increasing the contact area between the first electrode 210 and the light-emitting unit and improving the light-emitting effect.

[0039] Continuing to refer to FIG. 1, in some optional embodiments, the display panel 10 has a first display area AA1, a second display area AA2, and a non-display area surrounding the first display area AA1 and the second display area AA2, where the first display area AA1 and the second display area AA2 are display areas, and the light transmittance of the first display area AA1 is greater than the light transmittance of the second display area AA2.

[0040] In the present application, the light transmittance of the first display area AA1 is preferably 15% or more. To ensure that the light transmittance of the first display area AA1 is greater than 15%, even greater than 40%, or even higher, in this embodiment, the light transmittance of each functional film layer of the display panel 10 located in the first display area AA1 is greater than 80%, and at least some of the functional film layers are greater than 90%.

[0041] According to the display panel 10 of the embodiment of the present application, the light transmittance of the first display area AA1 is greater than that of the second display area AA2, and a photosensitive assembly can be integrated on the non-display side of the first display area AA1 of the display panel 10, thereby realizing under-screen integration of, for example, a camera's photosensitive assembly, and the first display area AA1 can display a screen, thereby increasing the display area of ​​the display panel 10 and realizing a full-screen design of the display device.

[0042] Preferably, the hollow portion 420 of the second electrode layer 400 may be located in the first display area AA1 to improve the light transmittance of the first display area AA1. In another embodiment, the hollow portion 420 of the second electrode layer 400 may be located simultaneously in the first display area AA1 and the second display area AA2 to improve the light transmittance of the entire display area. It can be understood that the embodiments provided herein may be provided in the first display area AA1 and / or the second display area AA2, and the specific provision may be made according to actual circumstances.

[0043] Referring to FIGS. 1 and 3, FIG. 3 is a cross-sectional view taken along line AA in FIG. 1 in another embodiment.

[0044] As shown in Figures 1 and 3, in some alternative embodiments, the pixel definition layer 300 further includes a second opening 330 extending through the pixel definition layer 300, and the orthogonal projection of the hollow portion 420 on the substrate 100 is located within the orthogonal projection of the second opening 330 on the substrate 100.

[0045] In these alternative embodiments, when fabricating the second electrode layer 400 on the pixel definition layer 300, a second conductive material layer is first formed on the pixel definition layer 300, and then the second conductive material layer is patterned to form the second electrode layer 400. The second conductive material layer can be deposited directly in the second opening 330, further reducing the distance between the second conductive material layer and the first electrode layer 200.

[0046] When the first electrode 210 is used to perform laser etching and ashing on the second conductive material layer, a hollow portion 420 can be formed in the region corresponding to the second opening 330, which can improve the problem of the edge of the body portion 410 that turns back upward toward the hollow portion 420. Specifically, the closer the distance, the smaller the diffraction and the better the laser focusing effect, which can improve the effect of the upward turning of the edge of the body portion 410 on the subsequent packaging process.

[0047] Preferably, when common layers such as a hole transport layer, a hole injection layer, an electron transport layer and an electron injection layer are fabricated in the pixel definition layer 300, these common layers are further provided between the first electrode 210 and the second conductive material layer.

[0048] 1, 3 and 4, Fig. 4 is a partially enlarged structural schematic diagram of Q in Fig. 1. In order to better illustrate the structure of the display panel 10 of the present application, Fig. 4 only shows the relative positional relationship between the first electrode layer 200 and the pixel definition layer 300.

[0049] As shown in Figures 1 and 3, in some alternative embodiments, at least a portion of the edge of the orthogonal projection of the first electrode 210 on the substrate 100 is located within the orthogonal projection of the second opening 330 on the substrate 100, i.e., at least a portion of the first electrode 210 extends from the side of the isolation portion 310 facing the substrate 100 into the second opening 330.

[0050] When the first electrode 210 is used to pattern the second electrode layer 400 to form the body portion 410, the shielding of the first electrode 210 results in the formation of an unetched body portion 410 in the area where the first electrode 210 is located. At least a part of the edge of the orthogonal projection of the first electrode 210 on the substrate 100 is located within the orthogonal projection of the second opening 330 on the substrate 100, which ensures that the edge of the body portion 410 facing the hollow portion 420 is located within the second opening 330, ensures that the distance between the edge of the body portion 410 and the first electrode 210 is short, and improves the problem of the edge of the body portion 410 facing the hollow portion 420 turning back upward.

[0051] 4 , the first electrode layer 200 further includes a second electrode 220, and the hollow portion 420 is provided so as not to overlap with the orthogonal projection of the second electrode 220 and the first electrode 210 on the substrate 100. By providing the second electrode 220, the first electrode layer 200 can better function as a mask in the process of laser ashing the second electrode layer 400 to form the hollow portion 420 without affecting the normal operation of the first electrode 210.

[0052] Preferably, in order to further reduce the distance between the second electrode 220 and the second electrode layer 400, a structure such as a common layer may not be provided between the second electrode 220 and the second electrode layer 400.

[0053] Referring to Figure 5, in some optional embodiments, at least a portion of the edge of the orthogonal projection of the second electrode 220 on the substrate 100 is located within the orthogonal projection of the second opening 330 on the substrate 100, i.e., at least a portion of the second electrode 220 extends from the side of the isolation portion 310 facing the substrate 100 into the second opening 330.

[0054] In these embodiments, when the second electrode layer 400 is patterned using the second electrode 220 to form the body portion 410, the shielding of the second electrode 220 results in the formation of an unetched body portion 410 in the area where the second electrode 220 is located. At least a part of the edge of the orthogonal projection of the second electrode 220 on the substrate 100 is located within the orthogonal projection of the second opening 330 in the substrate 100, which ensures that the edge of the body portion 410 facing the hollow portion 420 is located within the second opening 330, ensures that the distance between the edge of the body portion 410 and the second electrode 220 is short, and improves the problem of the edge of the body portion 410 facing the hollow portion 420 turning back upward.

[0055] Preferably, the maximum distance between the second electrode 220 and the body 410 in the thickness direction of the display panel 10 is 0.8 μm or less. By shortening the distance between the second electrode 220 and the body 410, the problem of the edge of the body 410 facing the hollow portion 420 turning back upward can be improved.

[0056] The first electrode 210 and the second electrode 220 are provided on the same layer, and the maximum distance between the second electrode 220 and the main body 410 in the thickness direction of the display panel 10 is 0.8 μm or less. Specifically, the distance between the second electrode 220 and the main body 410 in the thickness direction of the display panel 10 may be 200 nm, 500 nm, 800 nm, etc. By shortening the distance between the first electrode layer 200 and the main body 410, the problem of the edge of the main body 410 facing the hollow portion 420 turning back upward can be improved.

[0057] In some optional embodiments, the second electrode 220 and the first opening 320 are offset from each other, i.e., the orthogonal projection of the second electrode 220 on the substrate 100 does not overlap with the orthogonal projection of the first opening 320 on the substrate 100. This can prevent the second electrode 220 from affecting the light-emitting effect of the light-emitting unit in the first opening 320.

[0058] 4 and 5, in some optional embodiments, a gap 230 exists between the first electrode 210 and the second electrode 220, connecting the second electrode 220 and the body portion 410 of the second electrode layer 400 to each other, thereby preventing the first electrode 210 from being short-circuited to the body portion 410 of the second electrode layer 400 via the second electrode 220, and further improving the yield of the display panel 10. In addition, the provision of the second electrode 220 can also prevent laser heat from being conducted to the light-emitting unit via the first electrode 210, which would affect the display effect.

[0059] The size of the gap 230 may vary, preferably 0.5 μm to 10 μm in width. Specifically, the size of the gap 230 may be 0.5 μm, 1 μm, 5 μm, etc. This can prevent a short circuit between the second electrode 220 and the main body 410 caused by a gap 230 that is too small, and can also prevent a through hole from being formed in the second electrode layer 400 at the position corresponding to the gap 230 when the first electrode layer 200 is used as a mask caused by a gap 230 that is too large, which affects the overlapping area between the first electrode 210 and the second electrode layer 400 and the light-emitting effect of the light-emitting unit. Note that the width of the gap 230 refers to the dimension in the first direction X.

[0060] The first electrodes 210 and the second electrodes 220 may be disposed in various ways. For example, one second electrode 220 may be disposed between two adjacent first electrodes 210.

[0061] In another alternative embodiment, as shown in FIG. 6, the first electrodes 210 and the second electrodes 220 are arranged in one-to-one correspondence, and each second electrode 220 is arranged to surround each first electrode 210, forming an annular gap 230 around the periphery of each first electrode 210.

[0062] In these alternative embodiments, a second electrode 220 is provided corresponding to each first electrode 210, and a hollow portion 420 is formed between two adjacent second electrodes 220, thereby increasing the distribution area of ​​the hollow portion 420 and reducing the distribution area of ​​the body portion 410, thereby improving the light transmittance of the display panel 10. Furthermore, the second electrode 220 is provided to surround the first electrode 210, thereby preventing the hollow portion 420 from overlapping with the first electrode 210 and preventing the hollow portion 420 from affecting the light emission of the light-emitting unit within the first opening 320. The annular gap 230 ensures mutual insulation between the second electrode 220 and the first electrode 210, thereby preventing the first electrode 210 from being short-circuited to the body portion 410 of the second electrode layer 400 via the second electrode 220.

[0063] In some optional embodiments, as shown in FIG. 6, the isolation portions 310 and the first electrodes 210 are arranged in one-to-one correspondence, and the isolation portions 310 are annular, and the orthogonal projection of each gap 230 on the substrate 100 is located within the orthogonal projection of each isolation portion 310 on the substrate 100.

[0064] In these alternative embodiments, the isolation portions 310 are annular, and large second openings 330 can be formed between adjacent isolation portions 310, and the second electrodes 310 are close to each other. 220 The distribution area of ​​the second electrode layer 400 can be further increased, and the problem of laser diffraction returning upward from the edge of the body 410 can be better improved.

[0065] Furthermore, the orthogonal projection of each gap 230 on the substrate 100 is located within the orthogonal projection of each isolation portion 310 on the substrate 100, and the main body portion 410 of the second electrode layer 400 is located on the side of the isolation portion 310 that is away from the first electrode layer 200, thereby ensuring mutual insulation between the second electrode layer 400 and the first electrode 210.

[0066] Preferably, still referring to Figure 6, a second opening 330 is formed between two adjacent isolation portions 310, and the edges of the orthogonal projections of the second electrodes 220 located on opposite sides of the second opening 330 on the substrate 100 are located within the orthogonal projections of the second openings 330 on the substrate 100.

[0067] For example, when the first electrodes 210 are distributed in an array along the first direction X (the X direction in FIG. 6 ) and the second direction Y (the Y direction in FIG. 6 ), the second electrodes 220 are provided on both sides of the second opening 330 in the first direction X and on both sides of the second opening 330 in the second direction Y. The edges of the second electrodes 220 located on both sides of the second opening 330 in the first direction X when orthogonally projected onto the substrate 100 are located within the orthogonal projection of the second opening 330 on the substrate 100. That is, the edges of the second electrodes 220 located on both sides of the second opening 330 in the first direction X all extend into the second opening 330. Similarly, the edges of the second electrodes 220 located on both sides of the second opening 330 in the second direction Y all extend into the second opening 330, which further increases the distribution area of ​​the second electrode layer 400 and the second electrodes 220 that are close to each other, and can better alleviate the problem of laser diffraction causing the laser to turn back upward around the edge of the main body 410.

[0068] 1, 7 and 8, FIG. 7 is a cross-sectional view taken along line AA in FIG. 1 in another embodiment, and FIG. 8 is a partially enlarged schematic structural view taken along line Q in FIG. 1 in another embodiment.

[0069] As shown in Figures 1, 7 and 8, in some optional embodiments, the display panel 10 further includes a metal shielding layer 500, which is located on the side of the first electrode layer 200 away from the pixel definition layer 300, and the metal shielding layer 500 includes a shielding portion 510, and the orthogonal projection of the gap 230 on the substrate 100 is located within the orthogonal projection of the shielding portion 510 on the substrate 100, and the orthogonal projection of the hollow portion 420 on the substrate 100 and the orthogonal projection of the shielding portion 510 on the substrate 100 are arranged so as not to overlap.

[0070] It can be understood that the orthogonal projection of the gap 230 on the substrate 100 is located within the orthogonal projection of the shielding portion 510 on the substrate 100, so that the second conductive material layer corresponding to the position of the gap 230 can be effectively prevented from being ashed by laser etching. It can be understood that the substrate 100 in this embodiment can include an array film layer, and the metal shielding layer 500 can be any metal film layer as long as it can meet the above needs.

[0071] In an alternative embodiment, the orthogonal projections of at least some of the second openings 330 on the substrate 100 are located within the orthogonal projections of the shielding portions 510 on the substrate 100, such that the body portions 410 communicate with each other. Figure 8 shows a schematic diagram of the relative positions of the metal shielding layer 500, the first electrode layer 200 and the pixel defining layer 300.

[0072] In these alternative embodiments, by providing the metal shielding layer 500, when laser light is emitted toward the second electrode layer 400 on the side of the substrate 100 away from the first electrode layer 200, the shielding portions 510 of the metal shielding layer 500 block the laser light, and further, the second electrode layer 400 corresponding to the gaps 230 and at least some of the second openings 330 are left unetched, and the main portions 410 communicate with each other to form a full-surface electrode. Therefore, due to the presence of the shielding portions 510, the region where the shielding portions 510 are located can form at least some of the main portions 410 of the second electrode layer 400, and the hollow portions 420 of the second electrode layer 400 can be formed in the region where the shielding portions 510 are not located.

[0073] The phrase "the orthogonal projections of at least some of the second openings 330 on the substrate 100 are located within the orthogonal projections of the shielding portion 510 on the substrate 100" may include the orthogonal projections of some of the second openings 330 among the plurality of second openings 330 on the substrate 100 being located within the orthogonal projections of the shielding portion 510 on the substrate 100, or the orthogonal projections of at least some of the same second openings 330 on the substrate 100 being located within the orthogonal projections of the shielding portion 510 on the substrate 100. It is only necessary to ensure that the main body portions 410 are in communication with each other.

[0074] In another embodiment, the orthogonal projection of at least a portion of the second electrode 220 on the substrate 100 may be located within the orthogonal projection of the shielding portion 510 on the substrate 100, and such an installation method can ensure that the main body portions 410 are in communication with each other.

[0075] The shape of the shielding portion 510 may be arranged in various ways. In some select embodiments, still referring to FIG. 8 , the shielding portion 510 is a stripe-shaped first portion extending along the second direction Y, and includes a first portion 511 in which a plurality of first portions 511 are arranged side by side along the first direction X, and a second portion 512 extending along the first direction X and connected to the plurality of first portions 511 arranged side by side in the first direction X, wherein the orthogonal projection of at least a portion of the main body 410 on the substrate 100 is located within the orthogonal projection of the first portion 511 on the substrate 100, and for the plurality of gaps 230 and the plurality of second openings 330 arranged side by side along the second direction Y, the orthogonal projection of at least a portion of each gap 230 and each second opening 330 on the substrate 100 is located within the orthogonal projection of the same first portion 511 on the substrate 100.

[0076] The first portion 511 may have a regular strip-like structure such as a rectangle, or may have an irregular strip-like structure as long as it can extend along the second direction Y as a whole; here, the specific shape of the first portion 511 is not particularly limited.

[0077] In these alternative embodiments, the first portion 511 includes at least a portion of each gap 230 among the plurality of gaps 230 located in the same row (when the second direction Y is the row direction), and and complexThe first portion 511 can shield a portion of each of the second openings 330 among the plurality of second openings 330. Alternatively, the first portion 511 can shield at least a portion of each of the plurality of gaps 230 among the plurality of gaps 230 located in the same column (when the second direction Y is the column direction) and a portion of each of the plurality of second openings 330 among the plurality of second openings 330, thereby allowing the main body portions 410 in the same row or the same column to communicate with each other. By shielding the second portion 512, it is possible to form main body portions 410 with the same distribution area and the same size as the second portion 512, and further to connect the main body portions 410 in different positions to each other, thereby forming a common electrode over the entire surface.

[0078] There are several ways to set the position of the second portion 512. For example, when the display panel 10 has a first region and a second region surrounding at least a part of the first region, and the first portion 511 is located in the first region and the second portion 512 is located in the second region, the distribution area of ​​the main body 410 in the first region can be further reduced, thereby improving the light transmittance of the first region. The second region may be a non-display region or may be a second display region AA2, but is not limited thereto.

[0079] An embodiment of the second aspect of the present application further provides a display device including the display panel 10 of any of the embodiments of the first aspect. Since the display device according to the embodiment of the second aspect of the present application includes the display panel 10 of any of the embodiments of the first aspect, the display device according to the embodiment of the second aspect of the present application has the beneficial effects of the display panel 10 of any of the embodiments of the first aspect, and the description thereof will be omitted here.

[0080] 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 (abbreviated as PDA), tablet computers, e-books, televisions, door controls, smart landlines, and consoles.

[0081] 9, which is a flowchart of a method for manufacturing a display panel 10 according to an embodiment of the third aspect of the present application. The display panel 10 may be any of the display panels 10 according to the embodiment of the first aspect described above.

[0082] As shown in FIG. 9, with reference also to the display panel 10 shown in FIGS. 1 to 8, the manufacturing method of the display panel 10 includes the following steps.

[0083] In step S01, a first conductive material layer is formed on a substrate; layer A patterning process is performed on the substrate to form a first electrode layer including a first electrode.

[0084] In step S02, an insulating material layer is fabricated on a side of the first electrode layer away from the substrate, and a patterning process is performed on the insulating material layer to form a pixel definition layer, the pixel definition layer including an isolation portion and a first opening surrounded by the isolation portion, and at least a portion of the first electrode is exposed through the first opening.

[0085] Preferably, after step S02, the pixel definition layer 300 may be provided with a layer structure including a hole injection layer, a hole transport layer, a light-emitting unit, an electron transport layer and an electron injection layer.

[0086] In step S03, a second conductive material layer is fabricated on the pixel definition layer.

[0087] In step S04, a laser etching process is performed on the second conductive material layer from the side of the substrate away from the first electrode layer to form a second electrode layer, the second electrode layer including a main body portion and a hollow portion penetrating the main body portion, and is arranged so that the orthogonal projections of the hollow portion and the first electrode on the substrate do not overlap.

[0088] In the manufacturing method of the display panel 10 according to the embodiment of the present application, first, in step S01, the first electrode 210 is formed. The first electrode 210 can be used as a mask for patterning the second conductive material layer in step S03. The second conductive material layer in the area where the first electrode 210 is located is not etched, and the main body 410 of the second electrode layer 400 is formed. Next, in step S02, the pixel definition layer 300 is formed. The light-emitting unit can be disposed in the first opening 320. The first electrode 210 and the main body 410 of the second electrode layer 400 can drive the light-emitting unit to emit light. Since the first electrode 210 functions as a mask for patterning the second conductive material layer, the material of the second conductive material layer in the area where the first electrode 210 is not located is removed by laser etching. Therefore, the main body 410 of the second electrode layer 400 is arranged so that the orthogonal projection along the thickness direction of at least a portion of the main body 410 and the first electrode 210 overlap, and the orthogonal projection on the substrate 100 of the hollow portion 420 and the first electrode 210 do not overlap.

[0089] In some alternative embodiments, in step S02, the insulating material layer may be patterned to form the second opening 330. Because no light-emitting unit is provided within the second opening 330, if the pixel definition layer 300 includes common layers, such as a hole injection layer, a hole transport layer, an electron transport layer, and an electron injection layer, these common layers may be directly deposited on the first electrode 210 within the second opening 330. When the second conductive material layer is formed in step S03, a layer structure, such as a common layer, may be provided between the second conductive material layer and the first electrode 210, rather than a structure, such as the isolation portion 310, to further reduce the distance between the second conductive material layer and the first electrode 210 in the region where the second opening 330 is located. When the second conductive material layer is patterned in step S04 using the first electrode 210 as a mask, diffraction can be improved, and the yield of the subsequent packaging process can be avoided from being turned back above the edge of the body portion 410.

[0090] In some optional embodiments, the first electrode layer 200 further includes a second electrode 220, and is arranged so that the orthogonal projections of the hollow portion 420, the second electrode 220, and the first electrode 210 on the substrate 100 do not overlap, and at least a portion of the edge of the orthogonal projection of the second electrode 220 on the substrate 100 is located within the orthogonal projection of the second opening 330 on the substrate 100, and a gap 230 is further provided between the second electrode 220 and the first electrode 210 to prevent the main body portion 410 of the second electrode layer 400 from being short-circuited to the first electrode 210 via the second electrode 220.

[0091] In some alternative embodiments, before step S01, a metal shielding layer 500 may be formed, and the metal shielding layer 500 may include a shielding portion 510. Specifically, the orthogonal projection of the gap 230 on the substrate 100 may be located within the orthogonal projection of the shielding portion 510 on the substrate 100. Preferably, the orthogonal projection of the gap 230 and at least a portion of the second opening 330 on the substrate 100 may be located within the orthogonal projection of the shielding portion 510 on the substrate 100. Due to the presence of the shielding portion 510, when the second conductive material layer is patterned with a laser in step S04, the shielding portion 510 blocks the laser, thereby preventing the second conductive material layer in the region where the shielding portion 510 is located from being etched. Therefore, the hollow portion 420 is not formed in the region where the shielding portion 510 is located, and the orthogonal projection of the hollow portion 420 on the substrate 100 and the orthogonal projection of the shielding portion 510 on the substrate 100 do not overlap.

[0092] The shielding portion 510 may be provided at a plurality of positions, as long as the main body portions 410 can communicate with each other due to the presence of the shielding portion 510. As described above, the shielding portion 510 may include a first portion 511 and a second portion 512.

[0093] According to the above-described embodiments of the present application, these embodiments do not describe all details in detail, and the present invention is not limited to the above-described specific embodiments. From the above description, it is apparent that many modifications and variations are possible. This specification has selected and specifically described these embodiments in order to better understand the principles and practical applications of the present application, so that those skilled in the art can fully utilize the present application and modifications based on the present application. The present application is limited only by the claims and their full scope and equivalents.

Claims

1. a substrate, a first electrode layer, a pixel definition layer, and a second electrode layer; the first electrode layer is located on the substrate and includes a first electrode and a second electrode; the pixel definition layer is located on a side of the first electrode layer that is away from the substrate, and includes an isolation portion and a first opening that is surrounded by the isolation portion, and at least a portion of the first electrode is exposed through the first opening; at least a part of the second electrode layer is located on a side of the pixel definition layer that is away from the substrate, the second electrode layer includes a main body portion and a hollow portion that penetrates the main body portion, and is provided so that orthogonal projections of the hollow portion and the first electrode on the substrate do not overlap, the pixel definition layer is provided on the first electrode layer, the second electrode layer is provided on the pixel definition layer, and only the pixel definition layer is provided between the first electrode layer and the second electrode layer, the pixel definition layer further includes a second opening formed through the pixel definition layer, and an orthogonal projection of the hollow portion on the substrate is located within an orthogonal projection of the second opening on the substrate; an orthogonal projection of the second electrode on the substrate and an orthogonal projection of the first opening on the substrate do not overlap, A display panel, wherein at least a part of an edge of the second electrode in a normal projection on the substrate is located within the normal projection of the second opening on the substrate, and the main body portion extends to the second opening and is connected to the second electrode.

2. The display panel according to claim 1 , wherein at least a part of an edge of the first electrode in an orthogonal projection on the substrate is located within an orthogonal projection of the second opening on the substrate.

3. The hollow portion, the second electrode, and the first electrode The display panel according to claim 1 , wherein the orthogonal projections of the first and second substrates do not overlap.

4. a maximum distance between the second electrode and the main body in a thickness direction of the display panel is 0.8 μm or less; 4. The display panel of claim 3, wherein the second opening is formed between two adjacent isolation portions, and the edges of the second electrodes located on opposite sides of the second opening in the orthogonal projection on the substrate are located within the orthogonal projection of the second opening on the substrate.

5. The display panel according to claim 3 , wherein a gap exists between the first electrode and the second electrode.

6. the first electrodes and the second electrodes are provided in a one-to-one correspondence, and each of the second electrodes is provided to surround each of the first electrodes such that the annular gap is formed on the circumferential side of each of the first electrodes, The width of the gap is 0.5 μm to 10 μm, the isolation portions and the first electrodes are provided in a one-to-one correspondence, the isolation portions are annular, and an orthogonal projection of each of the gaps on the substrate is located within an orthogonal projection of each of the isolation portions on the substrate; 6. The display panel of claim 5, wherein the display panel further includes a metal shielding layer, the metal shielding layer being located on a side of the first electrode layer that is away from the pixel definition layer, the metal shielding layer including a shielding portion, the orthogonal projection of the gap on the substrate being located within the orthogonal projection of the shielding portion on the substrate, and the orthogonal projection of the hollow portion on the substrate and the orthogonal projection of the shielding portion on the substrate being arranged so as not to overlap.

7. an orthogonal projection of at least a portion of the second opening on the substrate is located within an orthogonal projection of the shielding portion on the substrate; The shielding portion is a first portion having a stripe shape extending along the second direction, the first portion being a plurality of first portions arranged side by side along the first direction; a second portion extending along the first direction and connected to a plurality of the first portions, an orthogonal projection of at least a portion of the main body portion on the substrate is located within an orthogonal projection of the first portion on the substrate; in the plurality of gaps and the plurality of second openings arranged side by side along the second direction, orthogonal projections of at least a portion of each of the gaps and each of the second openings on the substrate are located within orthogonal projections of the same first portion on the substrate, 7. The display panel of claim 6, wherein the display panel has a first region and a second region surrounding at least a portion of the first region, the first portion being located in the first region, and the second portion being located in the second region.

8. A display device comprising the display panel according to any one of claims 1 to 7.

9. Fabricating a first conductive material layer on a substrate, and patterning the first conductive material layer to form a first electrode layer, the first electrode layer including a first electrode and a second electrode; fabricating an insulating material layer on a side of the first electrode layer away from the substrate, and patterning the insulating material layer to form a pixel definition layer, the pixel definition layer including an isolation portion and a first opening surrounded by the isolation portion, and at least a portion of the first electrode being exposed through the first opening; fabricating a second conductive material layer on the pixel defining layer; forming a second electrode layer by performing a laser etching process on the second conductive material layer from a side of the substrate that is away from the first electrode layer, the second electrode layer including a main body portion and a hollow portion that penetrates the main body portion, and the hollow portion and the first electrode are provided so as not to overlap with each other when orthogonally projected on the substrate; only the pixel definition layer is provided between the first conductive material layer and the second conductive material layer; the pixel definition layer further includes a second opening formed through the pixel definition layer, and an orthogonal projection of the hollow portion on the substrate is located within an orthogonal projection of the second opening on the substrate; an orthogonal projection of the second electrode on the substrate and an orthogonal projection of the first opening on the substrate do not overlap, A method for manufacturing a display panel, wherein at least a part of an edge of the second electrode in a positive projection on the substrate is located within the positive projection of the second opening on the substrate, and the main body portion extends to the second opening and is connected to the second electrode.

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