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

Abstract

The present application discloses a display panel, a display device and a method for manufacturing a display panel, wherein the display panel comprises: an array substrate, comprising a first driving circuit; a first electrode layer, located on one side of the array substrate, the first electrode layer comprising a first electrode distributed in an array; a transparent conductive layer, comprising a first transparent electrode stacked with the first electrode, and a first transparent lead for connecting the first transparent electrode with the corresponding first driving circuit; a pixel definition layer, comprising an isolation portion and a first pixel opening formed by the isolation portion, the first electrode being located in the first pixel opening, and at least a portion of the edge of the first electrode being spaced from the isolation portion. The present application can improve the light transmittance of the display panel and facilitate the under-screen integration of the photosensitive component.

Description

Technical Field

[0001] 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 Art

[0002] With the rapid development of electronic devices, users have higher and higher requirements for screen-to-body ratio, making the full-screen display of electronic devices receive more and more attention in the industry.

[0003] Traditional electronic devices such as mobile phones and tablets need to integrate front cameras, receivers, and infrared sensors. In the prior art, notches or holes can be made on the display screen, and external light can enter the photosensitive element below the screen through the notches or holes on the screen. However, these electronic devices are not true full screens and cannot display in all areas of the entire screen. For example, the area corresponding to the front camera cannot display images. Summary of the invention

[0004] The embodiments of the present application provide a display panel, a display device, and a method for manufacturing a display panel, so as to achieve that at least a partial area of ​​the display panel is light-transmissive and displayable, thereby facilitating under-screen integration of photosensitive components.

[0005] An embodiment of the first aspect of the present application provides a display panel, comprising: an array substrate, comprising a first driving circuit; a first electrode layer, located on one side of the array substrate, the first electrode layer comprising first electrodes distributed in an array; a transparent conductive layer, comprising a first transparent electrode stacked with the first electrode, and a first transparent lead for connecting the first transparent electrode with the corresponding first driving circuit; a pixel definition layer, comprising an isolation portion and a first pixel opening formed by the isolation portion, the first electrode being located in the first pixel opening, and at least a portion of an edge of the first electrode being spaced apart from the isolation portion.

[0006] According to an implementation of the first aspect of the present application, the display panel also includes a planarization layer located between the array substrate and the first electrode layer; the first transparent electrode is arranged on the side of the first electrode facing away from the planarization layer, and the orthographic projection of the first electrode on the array substrate is located within the orthographic projection of its corresponding first transparent electrode on the array substrate.

[0007] According to any of the aforementioned embodiments of the first aspect of the present application, the first transparent electrode includes a first planar portion, a second planar portion, and an inclined portion connecting the first planar portion and the second planar portion, the first planar portion and the first electrode are both arranged on a surface of the planarization layer facing away from the substrate, and the second planar portion and the first electrode overlap;

[0008] A portion of the first planar portion is located between the isolation portion and the planarization layer.

[0009] According to any of the aforementioned embodiments of the first aspect of the present application, the display panel includes a first display area and a second display area, the transmittance of the first display area is greater than the transmittance of the second display area, the first pixel opening is located in the first display area, the pixel definition layer also includes a second pixel opening located in the second display area, the first electrode layer also includes a second electrode located in the second display area, and the first driving circuit is located in the second display area.

[0010] According to any of the aforementioned embodiments of the first aspect of the present application, the second pixel opening is larger than the first pixel opening.

[0011] According to any of the aforementioned embodiments of the first aspect of the present application, each second electrode is arranged corresponding to each second pixel opening, and the orthographic projection area of ​​the second electrode on the array substrate is larger than the area of ​​the corresponding second pixel opening.

[0012] According to any of the aforementioned embodiments of the first aspect of the present application, at least part of the first driving circuit is connected to at least two first transparent electrodes.

[0013] According to any of the aforementioned embodiments of the first aspect of the present application, the material of the first electrode includes at least one of magnesium and silver.

[0014] According to any of the aforementioned embodiments of the first aspect of the present application, the first electrode includes a first indium tin oxide layer, a first metal silver layer, and a second indium tin oxide layer which are sequentially stacked in a direction away from the planarization layer.

[0015] According to any of the aforementioned embodiments of the first aspect of the present application, the material of the first transparent electrode includes indium tin oxide.

[0016] According to any of the aforementioned embodiments of the first aspect of the present application, the transparent conductive layer is an indium tin oxide layer.

[0017] An embodiment of a second aspect of the present application provides a display device, which includes a display panel according to any of the above embodiments.

[0018] An embodiment of a third aspect of the present application provides a method for preparing a display panel, including:

[0019] A planarization layer is prepared on an array substrate, wherein the array substrate comprises a first driving circuit;

[0020] A transparent conductive layer is prepared on the array substrate, wherein the transparent conductive layer includes a first transparent electrode stacked with the first electrode and a first transparent lead connecting the first transparent electrode and a corresponding first driving circuit;

[0021] A pixel definition layer is further prepared on the array substrate, wherein the pixel definition layer includes an isolation portion and a first pixel opening formed by the isolation portion, wherein the first electrode is located at the first pixel opening, and at least a portion of an edge of the first electrode is spaced from the isolation portion;

[0022] A first light emitting unit is prepared in the first pixel opening.

[0023] In the display panel provided in the embodiment of the present application, the display panel includes an array substrate, a first electrode layer arranged on one side of the array substrate, a transparent conductive layer and a pixel definition layer. The first electrode layer includes a first electrode. The transparent conductive layer includes a first transparent electrode and a first transparent lead, the first transparent lead is used to connect the first transparent electrode and the first driving circuit, the first transparent electrode and the first electrode are stacked, so the first electrode can be electrically connected to the first driving circuit through the first transparent electrode and the first transparent lead, so that the first driving circuit can drive the first electrode. The pixel definition layer includes a first pixel opening formed by the isolation portion, the first pixel opening is used to set the light-emitting unit, and the first driving circuit can make the first light-emitting unit emit light by driving the first electrode. The first transparent electrode and the first transparent lead can ensure the transmittance of the display panel, which is convenient for the under-screen integration of the photosensitive component. The first electrode can ensure the microcavity effect and improve the display effect of the display panel. At least part of the edge of the first electrode is spaced from the isolation portion, that is, the area of ​​the first electrode is small, and the gap between the edge of the first electrode and the isolation portion can improve the transmittance of the display panel without changing the area of ​​the first pixel opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Other features, objects and advantages of the present application will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings, in which the same or similar reference numerals represent the same or similar features and the accompanying drawings are not drawn to scale.

[0025] Figure 1 is a schematic top view of a display panel provided according to an embodiment of the present application;

[0026] Figure 2 Figure 1 A partial magnified view of the middle Q region in one example;

[0027] Figure 3 yes Figure 2 Sectional view at the middle BB;

[0028] Figure 4 yes Figure 3 A schematic diagram of the local enlarged structure at position I in the middle;

[0029] Figure 5 is a top view of a partial layer structure of a display panel provided by another embodiment of the present application;

[0030] Figure 6 yes Figure 5 Schematic diagram of the local enlarged structure

[0031] Figure 7is a schematic top view of a display device provided in an embodiment of the present application;

[0032] Figure 8 yes Figure 7 Sectional view along the mid-DD direction;

[0033] Fig. 9 It is a schematic flow chart of a method for preparing a display panel provided in an embodiment of the present application.

[0034] Description of reference numerals:

[0035] 100, display panel; 200, photosensitive component; S1, first surface; S2, second surface;

[0036] 10. array substrate; 110. first driving circuit; 120. second driving circuit;

[0037] 20. Planarization layer;

[0038] 30. first electrode layer; 310. first electrode; 320. second electrode;

[0039] 40, transparent conductive layer; 410, first transparent electrode; 411, first plane portion; 412, second plane portion; 413, inclined portion; 420, first transparent lead;

[0040] 50, pixel definition layer; 510, isolation portion; K1, first pixel opening; 520, first light emitting unit; K2, second pixel opening; 530, second light emitting unit;

[0041] 60, first sub-pixel; 70, second sub-pixel; 80, second transparent lead;

[0042] 910, a third electrode; 920, a fourth electrode;

[0043] AA1, first display area; AA2, second display area; NA, non-display area. DETAILED DESCRIPTION

[0044] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain 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 embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0045] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0046] It should be understood that when describing the structure of a component, when a layer or a region is referred to as being "on" or "over" another layer or another region, it may mean that it is directly on the other layer or another region, or that other layers or regions are included between it and the other layer or another region. Moreover, if the component is turned over, the layer or a region will be "below" or "beneath" another layer or another region.

[0047] On electronic devices such as mobile phones and tablet computers, it is necessary to integrate photosensitive components such as a front camera, an infrared light sensor, a proximity light sensor, etc. on one side of the display panel. In some embodiments, a light-transmitting display area can be provided on the above electronic device, and the photosensitive component can be provided on the back of the light-transmitting display area, so as to realize full-screen display of the electronic device while ensuring the normal operation of the photosensitive component.

[0048] The light-transmitting display area includes sub-pixels so that the light-transmitting display area can display. In order to improve the transmittance of the light-transmitting display area, a light-transmitting material (such as indium tin oxide) is selected to prepare the pixel electrode of the sub-pixel in the light-transmitting display area. If the pixel electrode is directly prepared using a light-transmitting material, the microcavity effect of the light-transmitting display area will be extremely low, and the low luminous efficiency of the sub-pixel will cause the difference between the luminous brightness of the light-transmitting display area and the luminous brightness of the main display area to be too large. Therefore, the applicant shrinks the pixel electrode in the light-transmitting display area to ensure the transmittance of the light-transmitting display area. With this solution, when the luminous brightness of the sub-pixels in the main display area and the light-transmitting display area is the same, the current density of the pixel electrode in the light-transmitting display area will be greater than the current density on the pixel electrode in the main display area, resulting in a decrease in the life of the pixel electrode in the light-transmitting display area.

[0049] In order to solve the above problems, the embodiments of the present application provide a display panel, a display device and a method for manufacturing the display panel. The embodiments of the display panel and the display device will be described below in conjunction with the accompanying drawings.

[0050] An embodiment of the present application provides a display panel, which may be an organic light emitting diode (OLED) display panel.

[0051] See also Figures 1 to 3 , Figure 1 is a schematic top view of a display panel 100 provided according to an embodiment of the present application. Figure 2 Figure 1 A partial magnified view of the mid-Q region in one example. Figure 3 yes Figure 2 Cross-sectional view at the middle BB.

[0052] like Figures 1 to 3 As shown, the display panel 100 provided by the embodiment of the first aspect of the present application includes an array substrate 10, a planarization layer 20, a first electrode layer 30, a transparent conductive layer 40 and a pixel definition layer 50: the array substrate 10 includes a first driving circuit 110; the planarization layer 20 is located on one side of the array substrate 10; the first electrode layer 30 is located on the side of the planarization layer 20 away from the array substrate 10, and the first electrode layer 30 includes first electrodes 310 distributed in an array. The transparent conductive layer 40 includes a first transparent electrode 410 stacked with the first electrode 310, and a first transparent lead 420 for connecting the first transparent electrode 410 with the corresponding first driving circuit 110. The pixel definition layer 50 includes an isolation portion 510 and a first pixel opening K1 formed by the isolation portion 510. The first electrode 310 is located in the first pixel opening K1, and at least part of the edge of the first electrode 310 is spaced from the isolation portion 510.

[0053] Optionally, a first light emitting unit 520 is disposed in each first pixel opening K1.

[0054] In the display panel 100 provided in the embodiment of the present application, the display panel 100 includes an array substrate 10, a planarization layer 20 disposed on one side of the array substrate 10, a first electrode layer 30, a transparent conductive layer 40 and a pixel definition layer 50. The first electrode layer 30 includes a first electrode 310. The transparent conductive layer 40 includes a first transparent electrode 410 and a first transparent lead 420. The first transparent lead 420 is used to connect the first transparent electrode 410 and the first driving circuit 110. The first transparent electrode 410 and the first electrode layer 30 are stacked, so that the first electrode 310 can be electrically connected to the first driving circuit 110 through the first transparent electrode 410 and the first transparent lead 420, so that the first driving circuit 110 can drive the first electrode 310. The pixel definition layer 50 includes a first pixel opening K1 formed by the isolation portion 510. The first pixel opening K1 is used to set a light-emitting unit. The first driving circuit 110 can make the first light-emitting unit 520 emit light by driving the first electrode 310. The first transparent electrode 410 and the first transparent lead 420 can improve the light transmittance of the display panel 100, and facilitate the under-screen integration of the photosensitive component. The first electrode 310 can ensure the microcavity effect and improve the display effect of the display panel 100. At least part of the edge of the first electrode 310 is spaced from the isolation part 510, that is, the area of ​​the first electrode 310 is small, and the gap between at least part of the edge of the first electrode 310 and the isolation part 510 can improve the light transmittance of the display panel 100 when the area of ​​the first pixel opening K1 remains unchanged.

[0055] There are many ways to set the array substrate 10. Optionally, the array substrate 10 includes a substrate, which can be made of a light-transmitting material such as glass or polyimide (PI). The array substrate 10 can also include a support layer located on the side of the substrate away from the active layer, and the support layer can include a steel plate layer and / or a foam layer. A buffer layer and other layer structures can also be set between the substrate and the active layer.

[0056] Optionally, the orthographic projection area of ​​the first electrode 310 on the array substrate 10 is smaller than the orthographic projection area of ​​the corresponding first pixel opening K1 on the array substrate 10. It can be understood that along the thickness direction of the pixel definition layer 500, the cross-section of the first pixel opening K1 is not equal. Here, the orthographic projection of the first pixel opening K1 on the array substrate 10 can be understood as the opening size at the minimum cross-section of the first pixel opening K1, that is, the end of the first pixel opening K1 facing the planarization layer 20. Therefore, when the orthographic projection area of ​​the first electrode 310 on the array substrate 10 is smaller than the orthographic projection area of ​​the corresponding first pixel opening K1 on the array substrate 10, at least part of the edge of the first electrode 310 is spaced from the inner wall surface of the isolation portion 510 facing the first pixel opening K1.

[0057] Optionally, the first transparent lead 420 passes through the planarization layer 20 and is connected to the first driving circuit 110. That is, the planarization layer 20 includes a via hole disposed therethrough, and the first transparent lead 420 is connected to the first driving circuit 110 through the via hole on the planarization layer 20.

[0058] Optionally, the display panel 100 also includes a second transparent lead 80, which is located on the side of the planarization layer 20 facing the array substrate 10, and a via is opened on the planarization layer 20, and the second transparent lead 80 and the first transparent lead 420 are connected through the via on the planarization layer 20, and the second transparent lead 80 is connected between the first driving circuit 110 and the first transparent lead 420.

[0059] In some optional embodiments, such as Figures 4 to 6 As shown, the first transparent electrode 410 is disposed on the side of the first electrode 310 away from the planarization layer 20, and the orthographic projection of the first pixel opening K1 on the substrate is located within the orthographic projection of the corresponding first transparent electrode 410 on the array substrate 10. Optionally, the orthographic projection area of ​​the first transparent electrode 410 on the array substrate 10 is larger than the orthographic projection area of ​​the corresponding first pixel opening K1 on the array substrate 10.

[0060] like Figure 6 As shown, since the area of ​​the first electrode 310 is small, the first electrode 310 and the inner wall surface of the isolation portion 510 facing the first pixel opening K1 are arranged at intervals, and at least part of the first transparent electrode 410 is in direct contact with the surface of the planarization layer 20 in the first pixel opening K1. In the direction from the edge to the center of the first pixel opening K1, the first transparent electrode 410 extends from the surface of the planarization layer 20 to the side of the first electrode 310, and then part of the first transparent electrode 410 is located on the side of the first electrode 310 away from the planarization layer 20 and is stacked with the first electrode 310. Therefore, at least part of the first transparent electrode 410 can form an inclined surface covering the side of the first electrode 310 in the first pixel opening K1, which can increase the surface area of ​​the first transparent electrode 410 facing the first pixel opening K1, and further increase the contact area between the first transparent electrode 410 and the light-emitting unit in the first pixel opening K1, thereby improving the light-emitting effect and ensuring the display effect of the display panel 100.

[0061] In some optional embodiments, such as Figure 3 and Figure 4As shown, the first transparent electrode 410 includes a first plane portion 411, a second plane portion 412, and an inclined portion 413 connecting the first plane portion 411 and the second plane portion 412. The first plane portion 411 and the first electrode 310 are both arranged on a surface of the planarization layer 20 facing away from the substrate, and the second plane portion 412 overlaps the first electrode 310. Part of the first plane portion 411 is located between the isolation portion 510 and the planarization layer 20. Optionally, due to the existence of the inclined portion 413, the first plane portion 411 and the second plane portion 412 are arranged at intervals in the orthographic projection of the array substrate 10.

[0062] In these optional embodiments, the portion of the first transparent electrode 410 covering the side of the first electrode 310 forms an inclined portion 413, the portion of the first transparent electrode 410 overlapping the first electrode 310 is the second plane portion 412, and the portion of the first transparent electrode 410 located on the outer peripheral side of the first electrode 310 is the first plane portion 411. The first plane portion 411 and the second plane portion 412 are connected to each other through the inclined portion 413, and the orthographic projections of the first plane portion 411 and the second plane portion 412 are arranged at intervals, which can increase the surface area of ​​the first transparent electrode 410 facing the first pixel opening K1.

[0063] Optionally, part of the first plane portion 411 is located in the first pixel opening K1. The surface area of ​​the first transparent electrode 410 facing the first pixel opening K1 can be increased, thereby increasing the contact area between the first transparent electrode 410 and the first light-emitting unit 520. By setting the first transparent electrode 410, the area of ​​the first electrode 310 can be appropriately reduced, thereby improving the light transmittance of the area where the first electrode 310 is located.

[0064] In some embodiments, please refer to Figure 1 and Figure 2 The display panel 100 has a first display area AA1, a second display area AA2, and a non-display area NA surrounding the first display area AA1 and the second display area AA2, and the transmittance of the first display area AA1 is greater than the transmittance of the second display area AA2.

[0065] Herein, it is preferred that the transmittance of the first display area AA1 is greater than or equal to 15%. To ensure that the transmittance of the first display area AA1 is greater than 15%, even greater than 40%, or even higher, the transmittance of each functional film layer of the display panel 100 in this embodiment is greater than 80%, and even the transmittance of at least some functional film layers is greater than 90%.

[0066] According to the display panel 100 of the embodiment of the present application, the transmittance of the first display area AA1 is greater than the transmittance of the second display area AA2, so that the display panel 100 can integrate the photosensitive component 200 on the back of the first display area AA1, and realize the under-screen integration of the photosensitive component 200 of the camera, for example. At the same time, the first display area AA1 can display the picture, thereby increasing the display area of ​​the display panel 100 and realizing the full-screen design of the display device.

[0067] Optionally, the first transparent electrode 410, the first transparent lead 420, the first pixel opening K1 and the first electrode 310 are located in the first display area AA1 to improve the transmittance of the first display area AA1, facilitate the integration of photosensitive components under the screen in the first display area AA1, and improve the display effect of the first display area AA1.

[0068] In some optional embodiments, such as Figure 3 As shown, the pixel definition layer 50 further includes a second pixel opening K2 located in the second display area AA2, and the second pixel opening K2 is larger than the first pixel opening K1. Optionally, a second light emitting unit 530 is disposed in the second pixel opening K2.

[0069] The first light-emitting unit 520 and the second light-emitting unit 530 are sub-pixel units of the same color. In an optional embodiment, the orthographic projection area of ​​the second pixel opening K2 on the array substrate 10 is greater than the orthographic projection area of ​​the first pixel opening K1 on the array substrate 10. Since the area of ​​the first pixel opening K1 is small, the area of ​​the first electrode 310 disposed in the first pixel opening K1 is also small, which can improve the transmittance of the first display area AA1. In addition, even if the size of the first pixel opening K1 and the size of the first electrode 310 are both small, since the first pixel opening K1 is correspondingly provided with the first transparent electrode 410, the surface area of ​​the first transparent electrode 410 facing the first pixel opening K1 is large, that is, the inclined portion 413 increases the actual contact area between the first transparent electrode 410 and the first light-emitting unit 520, improves the light-emitting effect of the first light-emitting unit 520, improves the brightness difference between the first light-emitting unit 520 and the second light-emitting unit 530, and then improves the display difference between the first display area AA1 and the second display area AA2, and improves the display effect of the display panel 100.

[0070] In some optional embodiments, such as Figure 3As shown, the first electrode layer 30 further includes a second electrode 320 located in the second display area AA2, each second electrode 320 is arranged corresponding to each second pixel opening K2, and the orthographic projection area of ​​the second electrode 320 on the array substrate 10 is larger than the corresponding area of ​​the corresponding second pixel opening K2. Part of the second electrode 320 is located between the pixel definition layer 50 and the planarization layer 20, ensuring that no planarization layer 20 is exposed from the second pixel opening K2, which can increase the distribution area of ​​the second electrode 320 in the second pixel opening K2 and improve the luminous efficiency of the second light-emitting unit 530.

[0071] Since the orthographic projection area of ​​the second electrode 320 is larger than the orthographic projection area of ​​the second pixel opening K2, and the orthographic projection area of ​​the second pixel opening K2 is larger than the orthographic projection area of ​​the first pixel opening K1, and the first electrode 310 is smaller than the orthographic projection area of ​​the first pixel opening K1 where it is located, the orthographic projection area of ​​the second electrode 320 used to drive the same color light-emitting unit on the array substrate 10 is larger than the orthographic projection area of ​​the first electrode 310 on the array substrate 10.

[0072] Optional, please continue to Figure 2 and Figure 3 The display panel 100 further includes a first sub-pixel 60 located in the first display area AA1 and a second sub-pixel 70 located in the second display area AA2. The first sub-pixel 60 includes the above-mentioned first electrode 310, the first light-emitting unit 520 and the third electrode 910, and the third electrode 910 is located on a side of the first light-emitting unit 520 away from the first electrode 310. The first electrode 310 and the third electrode 910 are used to interact with each other to make the first light-emitting unit 520 emit light.

[0073] As described above, the display panel 100 further includes a second transparent lead 80 connecting the first transparent lead 420 and the first driving circuit 110. Figure 2 Only one second transparent lead 80 is shown to connect the first driving circuit 110 and a first sub-pixel 60 for illustration, and other second transparent leads 80 are not shown, but are not limited to one first driving circuit 110 connecting one first sub-pixel 60, and one first driving circuit 110 can also be connected to multiple first sub-pixels 60.

[0074] like Figure 2As shown, the position of one of the first driving circuits 110 is exemplarily depicted, which is electrically connected to the corresponding first sub-pixel 60. The number of the first driving circuits 110 can be multiple, and they are respectively electrically connected to the corresponding first sub-pixels 60 through the first transparent leads 420. In some embodiments, the circuit structure of the first driving circuit 110 is any one of a 2T1C circuit, a 7T1C circuit, a 7T2C circuit, or a 9T1C circuit. Herein, "2T1C circuit" refers to a first driving circuit 110 including two thin film transistors (T) and one capacitor (C) in the first driving circuit 110, and other "7T1C circuits", "7T2C circuits", "9T1C circuits", etc. are analogous.

[0075] Optional, please continue to Figure 2 and Figure 3 The array substrate 10 further includes a second driving circuit 120, which is connected to the second sub-pixel 70 and is used to drive the second sub-pixel 70 to emit light. The second sub-pixel 70 includes a second electrode 320, a second light-emitting unit 530, and a fourth electrode 920 located on a side of the second light-emitting unit 530 away from the second electrode 320. The fourth electrode 920 and the third electrode 910 can be interconnected as a surface electrode. The second driving circuit 120 and the second electrode 320 are connected to each other.

[0076] In some optional embodiments, such as Figure 3 and Figure 5 As shown, the first driving circuit 110 is connected to at least two first transparent electrodes 410, which can simplify the structure and number of the first driving circuit 110, reduce the number of first transparent leads 420 or second transparent leads 80, and improve the transmittance of the first display area AA1.

[0077] Optionally, the first driving circuit 110 is located in the second display area AA2, and the first driving circuit 110 used to drive the first sub-pixel 60 in the first display area AA1 to display is located in the second display area AA2, which can further reduce the distribution area of ​​the metal material in the first display area AA1 and improve the transmittance of the first display area AA1.

[0078] In some embodiments, the material of the first electrode 310 includes at least one of magnesium and silver.

[0079] In some embodiments, the first electrode 310 is stacked in sequence in a direction away from the planarization layer 20, including a first indium tin oxide layer, a first metal silver layer, and a second indium tin oxide layer. By arranging the first indium tin oxide layer on the side of the first metal silver layer facing the planarization layer 20, the adhesion ability of the first electrode 310 can be improved, so that the first electrode 310 can be stably attached to the planarization layer 20. The second indium tin oxide layer is arranged on the side of the first metal silver layer away from the planarization layer 20, and the second indium tin oxide layer can provide protection for the first metal silver layer to prevent the silver material in the first metal silver layer from undergoing oxidation reaction. The first metal silver layer can improve the reflection effect of the first electrode 310, thereby improving the reflection effect of the first electrode 310 and improving the microcavity effect.

[0080] In some embodiments, the material of the first transparent electrode 410 includes indium tin oxide. For example, the first transparent electrode 410 is an indium tin oxide layer, so that the first transparent electrode 410 has good light transmittance.

[0081] Exemplarily, the display panel 100 may further include an encapsulation layer and a polarizer and a cover plate located above the encapsulation layer. The cover plate may also be directly arranged above the encapsulation layer without the need for a polarizer, or at least a cover plate may be directly arranged above the encapsulation layer of the first display area AA1 without the need for a polarizer, so as to avoid the polarizer affecting the amount of light collected by the photosensitive element arranged below the corresponding first display area AA1. Of course, a polarizer may also be arranged above the encapsulation layer of the first display area AA1.

[0082] The present application also provides a display device, which may include the display panel 100 of any of the above embodiments. The following description will be made by taking a display device of an embodiment as an example, in which the display device includes the display panel 100 of the above embodiment.

[0083] Figure 7 A schematic top view of a display device according to an embodiment of the present application is shown. Figure 8 Show Figure 7 In the display device of this embodiment, the display panel 100 may be the display panel 100 of one of the above embodiments, and the display panel 100 has a first display area AA1 and a second display area AA2, and the transmittance of the first display area AA1 is greater than the transmittance of the second display area AA2.

[0084] The display panel 100 includes a first surface S1 and a second surface S2 opposite to each other, wherein the first surface S1 is a display surface. The display device further includes a photosensitive component 200, which is located on the second surface S2 side of the display panel 100 and corresponds to the first display area AA1.

[0085] The photosensitive component 200 may be an image acquisition device for acquiring external image information. In the present embodiment, the photosensitive component 200 is a complementary metal oxide semiconductor (CMOS) image acquisition device. In some other embodiments, the photosensitive component 200 may also be a charge-coupled device (CCD) image acquisition device or other forms of image acquisition devices. It is understandable that the photosensitive component 200 may not be limited to an image acquisition device. For example, in some embodiments, the photosensitive component 200 may also be an infrared sensor, a proximity sensor, an infrared lens, a floodlight sensing element, an ambient light sensor, and a dot projector or other optical sensor. In addition, the display device may also integrate other components on the second surface S2 of the display panel 100, such as a handset, a speaker, and the like.

[0086] According to the display device of the embodiment of the present application, the transmittance of the first display area AA1 is greater than the transmittance of the second display area AA2, so that the display panel 100 can integrate the photosensitive component 200 on the back side of the first display area AA1, realizing under-screen integration of the photosensitive component 200 of the image acquisition device, for example. At the same time, the first display area AA1 can display the picture, thereby increasing the display area of ​​the display panel 100 and realizing a full-screen design of the display device.

[0087] According to the display device of the embodiment of the present application, the first transparent lead 420 connects the first transparent electrode 410 and the first driving circuit 110, and the first transparent electrode 410 and the first electrode layer 30 are stacked, so the first electrode 310 can be electrically connected to the first driving circuit 110 through the first transparent electrode 410 and the first lead, so that the first driving circuit 110 can drive the first electrode 310. The pixel definition layer 50 includes a first pixel opening K1 formed by the isolation portion 510, and the first pixel opening K1 is used to set the light-emitting unit. The first driving circuit 110 can make the first light-emitting unit 520 emit light by driving the first electrode 310. The first transparent electrode 410 can improve the light transmittance of the display panel 100, so that at least part of the area of ​​the display panel 100 can be light-transmitting and displayable, which is convenient for the under-screen integration of the photosensitive component. The first electrode 310 can ensure the microcavity effect and improve the display effect of the display panel 100. The orthographic projection area of ​​the first electrode 310 on the array substrate 10 is smaller than the orthographic projection area of ​​the corresponding first pixel opening K1 on the array substrate 10 , that is, the area of ​​the first electrode 310 is small, which can ensure the light transmittance of the display panel 100 .

[0088] See also Fig. 9 , Fig. 9It is a schematic flow chart of a method for preparing a display panel 100 provided in an embodiment of the present application. The display panel 100 may be the display panel 100 provided in any of the above-mentioned first aspect embodiments.

[0089] like Fig. 9 Please also refer to Figures 1 to 6 , the method for preparing the display panel 100 includes:

[0090] Step S01 : preparing a first electrode layer 30 on an array substrate 10 , wherein the first electrode layer 30 includes first electrodes 310 distributed in an array, and the array substrate 10 includes a first driving circuit 110 .

[0091] Optionally, when a planarization layer 20 is further disposed between the array substrate 10 and the first electrode layer 30 , in step S01 , the planarization layer 20 is first prepared on the array substrate 10 , and then the first electrode layer 30 is prepared on the planarization layer 20 .

[0092] Step S02 : preparing a transparent conductive layer 40 on the array substrate 10 , wherein the transparent conductive layer 40 includes a first transparent electrode 410 stacked with the first electrode 310 , and a first transparent lead 420 connecting the first transparent electrode 410 and the corresponding first driving circuit 110 .

[0093] Step S03: Continue to prepare the pixel definition layer 50 on the array substrate 10, the pixel definition layer 50 includes an isolation portion 510 and a first pixel opening K1 formed by the isolation portion 510, the first electrode 310 is located in the first pixel opening K1, and the orthographic projection area of ​​the first electrode 310 on the array substrate 10 is smaller than the orthographic projection area of ​​the corresponding first pixel opening K1 on the array substrate 10.

[0094] Step S04: preparing a first light emitting unit 520 in the first pixel opening K1.

[0095] In the display panel 100 prepared by the method provided in the embodiment of the present application, the first transparent lead 420 connects the first transparent electrode 410 and the first driving circuit 110, and the first transparent electrode 410 and the first electrode layer 30 are stacked, so the first electrode 310 can be electrically connected to the first driving circuit 110 through the first transparent electrode 410 and the first lead, so that the first driving circuit 110 can drive the first electrode 310. The pixel definition layer 50 includes a first pixel opening K1 formed by the isolation portion 510, and the first pixel opening K1 is used to set the light-emitting unit. The first driving circuit 110 can make the first light-emitting unit 520 emit light by driving the first electrode 310. The first transparent electrode 410 can improve the light transmittance of the display panel 100, so that at least part of the area of ​​the display panel 100 can be light-transmitting and displayable, which is convenient for the under-screen integration of the photosensitive component. The first electrode 310 can ensure the microcavity effect and improve the display effect of the display panel 100. The orthographic projection area of ​​the first electrode 310 on the array substrate 10 is smaller than the orthographic projection area of ​​the corresponding first pixel opening K1 on the array substrate 10 , that is, the area of ​​the first electrode 310 is small, which can ensure the light transmittance of the display panel 100 .

[0096] Optionally, when the display panel 100 includes a first display area AA1 and a second display area AA2, and the first sub-pixel 60 is located in the first display area AA1, an interconnect structure can be formed in the first display area AA1, and the interconnect structure is connected between the first electrodes 310 of multiple first sub-pixels 60 and the same first driving circuit 110 to reduce the wiring area and improve the transmittance of the first display area AA1.

[0097] According to the embodiments of the present application as above, these embodiments do not describe all the details in detail, nor do they limit the invention to specific embodiments. Obviously, many modifications and changes can be made based on the above description. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present application, so that those skilled in the art can make good use of the present application and the modifications based on the present application. The present application is only limited by the claims and their full scope and equivalents.

Claims

1. A display panel, characterized in that: include: An array substrate comprises a first driving circuit; A first electrode layer, located at one side of the array substrate, the first electrode layer comprising first electrodes distributed in an array; The transparent conductive layer includes a first transparent electrode stacked with the first electrode and a first transparent lead for connecting the first transparent electrode and a corresponding first driving circuit; The pixel definition layer includes an isolation portion and a first pixel opening formed by the isolation portion, the first electrode is located in the first pixel opening, and the first electrode is spaced from the edge of the isolation portion on the orthographic projection of the substrate at least part of the edge of the orthographic projection of the array substrate. Among them, the first transparent electrode includes a first planar portion, a second planar portion and an inclined portion connecting the first planar portion and the second planar portion, the first planar portion is located on the outer peripheral side of the first electrode, the inclined portion covers the side surface of the first electrode, and the second planar portion covers the surface of the first electrode away from the array substrate.

2. The display panel according to claim 1, characterized in that: The display panel also includes a planarization layer located between the array substrate and the first electrode layer; the first transparent electrode is arranged on a side of the first electrode away from the planarization layer, and the orthographic projection of the first electrode on the array substrate is located within the orthographic projection of its corresponding first transparent electrode on the array substrate.

3. The display panel according to claim 2, characterized in that: The first planar portion and the first electrode are both disposed on a surface of the planarization layer facing away from the substrate, and a portion of the first planar portion is located between the isolation portion and the planarization layer.

4. The display panel according to claim 1, characterized in that: The display panel comprises a first display area and a second display area, the light transmittance of the first display area is greater than the light transmittance of the second display area, and the first pixel opening is located in the first display area; The pixel definition layer further includes a second pixel opening located in the second display area; The first electrode layer further includes a second electrode located in the second display area; The first driving circuit is located in the second display area.

5. The display panel according to claim 4, characterized in that: The second pixel opening is larger than the first pixel opening.

6. The display panel according to claim 4, characterized in that: Each of the second electrodes is arranged corresponding to each of the second pixel openings, and an orthographic projection area of ​​the second electrode on the array substrate is larger than an area of ​​the corresponding second pixel opening.

7. The display panel according to claim 1, characterized in that: At least part of the first driving circuit is connected to at least two of the first transparent electrodes.

8. The display panel according to claim 1, characterized in that: The material of the first electrode includes at least one of magnesium and silver.

9. The display panel according to claim 8, characterized in that: The display panel further includes a planarization layer between the array substrate and the first electrode layer, and the first electrode includes a first indium tin oxide layer, a first metal silver layer, and a second indium tin oxide layer sequentially stacked in a direction away from the planarization layer.

10. The display panel according to claim 8, characterized in that: The material of the first transparent electrode includes indium tin oxide.

11. The display panel according to claim 8, characterized in that: The transparent conductive layer is an indium tin oxide layer.

12. A display device comprising the display panel according to any one of claims 1 to 11.

13. A method for preparing a display panel, characterized in that: include: A first electrode layer is prepared on an array substrate, wherein the first electrode layer includes a plurality of first electrodes distributed in an array, and the array substrate includes a first driving circuit; A transparent conductive layer is prepared on an array substrate, wherein the transparent conductive layer includes a first transparent electrode stacked with a first electrode, and a first transparent lead connecting the first transparent electrode and a corresponding first driving circuit, wherein the first transparent electrode includes a first plane portion, a second plane portion, and an inclined portion connecting the first plane portion and the second plane portion, wherein the first plane portion is located at an outer peripheral side of the first electrode, the inclined portion covers a side surface of the first electrode, and the second plane portion covers a surface of the first electrode away from the array substrate; A pixel definition layer is further prepared on the array substrate, wherein the pixel definition layer includes an isolation portion and a first pixel opening formed by the isolation portion, the first electrode is located at the first pixel opening, and at least a portion of an edge of an orthographic projection of the array substrate of the first electrode is spaced from the orthographic projection of the isolation portion of the array substrate; A first light emitting unit is prepared in the first pixel opening.

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