Display panel and display device

Abstract

Embodiments of the present application provide a display panel and a display device. In the display panel, a pixel definition layer is at least arranged in a first display area, and infrared light transmittance of the pixel definition layer is greater than or equal to a preset value. Even if the pixel definition layer is arranged in a second display area, the second display area can still transmit infrared light. Thus, both PLP technology and under-display electronic component technology can be adopted simultaneously.

Description

Display panel and display device Technical Field

[0001] This application relates to the field of display technology, and in particular to a display panel and display device. Background Technology

[0002] OLED (Organic Light-Emitting Diode) displays are widely used due to their advantages such as self-emission, wide color gamut, low power consumption, and the ability to achieve flexible displays. To improve screen-to-body ratio, existing OLED displays place electronic components under the display panel, allowing the panel to receive light from these components while they are in normal operation. Under-display technology uses a pixel definition layer with high transmittance. Simultaneously, to improve transmittance and reduce thickness, existing OLED displays employ PLP (Polishless Panel) technology. PLP technology uses color filters instead of polarizers to increase transmittance and reduce thickness. However, PLP technology typically uses a pixel definition layer with lower transmittance to reduce reflection. As can be seen from the above analysis, there is a conflict between the transmittance of the pixel definition layer used in under-display technology and that used in PLP technology.

[0003] Therefore, existing OLED display devices have the technical problem of not being able to simultaneously employ PLP technology and under-display electronic component technology. Invention Overview

[0004] This application provides a display panel and a display device to solve the technical problem that existing OLED display devices cannot simultaneously employ PLP technology and under-display electronic component technology.

[0005] In a first aspect, embodiments of this application provide a display panel, the display panel including a display area, the display area including a first display area and a second display area corresponding to the location of electronic components, the display panel including:

[0006] Substrate;

[0007] A planarization layer is disposed on one side of the substrate;

[0008] A pixel definition layer is disposed on the side of the planarization layer away from the substrate;

[0009] Wherein, the visible light transmittance of the pixel definition layer is less than the visible light transmittance of the planarization layer, the pixel definition layer is at least disposed in the first display area, and the infrared light transmittance of the pixel definition layer is greater than or equal to a preset value.

[0010] Secondly, embodiments of this application provide a display device, which includes a display panel as described in any of the above embodiments. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0013] Figure 1 is a plan view of the display panel provided in an embodiment of this application.

[0014] Figure 2 is a first cross-sectional schematic diagram of the display panel provided in an embodiment of this application.

[0015] Figure 3 is a second cross-sectional schematic diagram of the display panel provided in an embodiment of this application.

[0016] Figure 4 is a film layer stacking diagram of the second display area of ​​the display panel in Figures 2, 3, and 9.

[0017] Figure 5 is a film layer stacking diagram of the first display area of ​​the display panel in Figures 2 and 3.

[0018] Figure 6 is a third cross-sectional schematic diagram of the display panel provided in the embodiment of this application.

[0019] Figure 7 is a fourth cross-sectional schematic diagram of the display panel provided in the embodiment of this application.

[0020] Figure 8 is a film layer stacking diagram of the display panel shown in Figures 6 and 7.

[0021] Figure 9 is a fifth cross-sectional schematic diagram of the display panel provided in the embodiment of this application.

[0022] Figure 10 is a film layer stacking diagram of the first display area of ​​the display panel in Figure 9.

[0023] Figure 11 is a sixth cross-sectional schematic diagram of the display panel provided in the embodiment of this application.

[0024] Figure 12 is a schematic diagram of the display device provided in an embodiment of this application. Embodiments of the present invention

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0026] In the description of this application, it should be understood that the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, and "at least one" can mean one, two, or more, unless otherwise explicitly specified. In the description of this application, "perpendicular" means completely perpendicular to 90° or almost completely perpendicular, for example, the range of included angles between 80° and 100° is considered perpendicular. Similarly, "parallel" means completely parallel or almost completely parallel, for example, the range of completely parallel angles between 10° is considered parallel.

[0027] To illustrate the principle behind the technical problem addressed in this application, embodiments of this application provide some comparative display devices. It is understood that these comparative display devices should not be considered prior art in the embodiments of this application. In some comparative display devices, to increase the screen-to-body ratio, under-display electronic components are used, meaning the electronic components are placed under the display screen. To improve the light-gathering effect of the electronic components, the film layer in the area where the electronic components are placed is removed. However, this results in the area where the electronic components are placed being undisplayed. To enable display in the area where the electronic components are placed, some comparative display devices do not remove the film layer in the area of ​​the electronic components. Instead, they use light-transmitting conductive layers for transition or to replace the metal film layer, increasing the light transmittance of the area where the electronic components are placed. Furthermore, to further increase the light transmittance of the area where the electronic components are placed, a pixel definition layer with high transmittance is used. In other contrast display devices, PLP (Polishless Panel) technology is used to improve transmittance and reduce thickness. However, in PLP-based devices, the absence of a polarizer leads to higher reflectivity. To address this, some devices employ pixel definition layers with lower transmittance to reduce reflection. But as the analysis above shows, PLP-based devices use pixel definition layers with lower transmittance, while under-display electronic components (IDCPC) devices use pixel definition layers with higher transmittance. Therefore, there are currently no contrast display devices that simultaneously employ both PLP and IDCPC technologies. Thus, existing OLED displays face the technical challenge of not being able to simultaneously utilize both PLP and IDCPC technologies.

[0028] This application provides a display panel and a display device to solve the above-mentioned technical problems.

[0029] Figure 1 is a plan view of the display panel provided in an embodiment of this application. Figure 2 is a first cross-sectional view of the display panel provided in an embodiment of this application. Figure 3 is a second cross-sectional view of the display panel provided in an embodiment of this application. Figure 4 is a film layer stacking diagram of the second display area of ​​the display panel in Figures 2, 3, and 9. Figure 5 is a film layer stacking diagram of the first display area of ​​the display panel in Figures 2 and 3. Figure 6 is a third cross-sectional view of the display panel provided in an embodiment of this application. Figure 7 is a fourth cross-sectional view of the display panel provided in an embodiment of this application. Figure 8 is a film layer stacking diagram of the display panel in Figures 6 and 7. Figure 9 is a fifth cross-sectional view of the display panel provided in an embodiment of this application. Figure 10 is a film layer stacking diagram of the first display area of ​​the display panel in Figure 9. Figure 11 is a sixth cross-sectional view of the display panel provided in an embodiment of this application. Figure 12 is a schematic diagram of the display device provided in an embodiment of this application.

[0030] As shown in Figures 1 to 11, this application embodiment provides a display panel 1, which includes a display area 101. The display area 101 includes a first display area 101a and a second display area 101b corresponding to the position of electronic components. The display panel 1 includes a substrate 11, a planarization layer 14 and a pixel definition layer 152. The planarization layer 14 is disposed on one side of the substrate 11, and the pixel definition layer 152 is disposed on the side of the planarization layer 14 away from the substrate 11.

[0031] The visible light transmittance of the pixel definition layer 152 is less than that of the planarization layer 14. The pixel definition layer 152 is disposed at least within the first display area 101a. The infrared light transmittance of the pixel definition layer 152 is greater than or equal to a preset value.

[0032] This application provides a display panel 1. By having a pixel definition layer 152 disposed at least within a first display area 101a, the reflectivity of the first display area 101a can be reduced, thereby enabling the use of PLP technology. Furthermore, the infrared light transmittance of the pixel definition layer 152 is greater than or equal to a preset value. Even if the pixel definition layer 152 is disposed within a second display area 101b, the second display area 101b can still transmit infrared light. Thus, when an electronic component that receives infrared light is disposed within the second display area 101b, the electronic component can operate normally, thereby enabling the simultaneous use of PLP technology and under-display electronic component technology.

[0033] Specifically, both the first display area 101a and the second display area 101b can display normally. For example, both the first display area 101a and the second display area 101b can achieve pure color light display or colored light display.

[0034] Specifically, Figure 1 in this embodiment illustrates the case where the second display area 101b is located on the upper side of the display area 101, but this embodiment is not limited to this. The second display area 101b can be located on the left, right, lower, or middle side of the display area. Figure 1 in this embodiment illustrates the case where there is only one second display area 101b, but this embodiment is not limited to this. There can be multiple second display areas 101b, or the second display area 101b and the first display area 101a can be alternately arranged in the entire display area 101. Figure 1 in this embodiment illustrates the case where the second display area 101b is circular, but this embodiment is not limited to this. The second display area 101b can be rectangular, square, trapezoidal, or other shapes.

[0035] Specifically, as shown in Figure 1, the display panel 1 may further include a non-display area 102. The non-display area 102 may surround the display area 101, but this embodiment is not limited to this. The non-display area 102 may be disposed on one side, two sides, or three sides of the display area 101, and the non-display area 102 may be bent to the back side of the display panel. The non-display area 102 may include an upper border area (not shown), a left border area (not shown), a right border area (not shown), and a lower border area (not shown). The left and right border areas may include gate driving circuit setting areas, and the lower border area may include a bonding area. However, this embodiment is not limited to this. The gate driving circuit area may be disposed on one side of the display area, and correspondingly, the gate driving circuit is disposed on one side of the display area.

[0036] Specifically, infrared light has a wavelength greater than or equal to 760 nanometers (the wavelength range of infrared light may vary depending on the definition of visible light; for example, the wavelength range of visible light is 380 to 780 nanometers, and correspondingly, the wavelength of infrared light can be defined as greater than or equal to 780 nanometers). In other words, infrared light is light that cannot be directly seen, i.e., it is a type of invisible light. Correspondingly, visible light transmittance refers to the transmittance of visible light, while infrared light transmittance refers to the transmittance of infrared light.

[0037] Specifically, the electronic components in the embodiments of this application can be electronic components that receive infrared light, such as face recognition sensors.

[0038] Specifically, the preset value can be any value from 1% to 100%, with preset values ​​of 1%, 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 94%, 95%, and 100%.

[0039] For example, taking an infrared wavelength of 940 nanometers as an example, the infrared transmittance of the pixel definition layer can be greater than or equal to 94%.

[0040] Specifically, it is understood that by setting the pixel definition layer at least within the first display area and using the pixel definition layer to block light, the reflection of external light can be reduced, and the reflectivity can be lowered. This allows the display panel to adopt PLP technology, that is, a color filter layer is set on the side of the pixel definition layer away from the substrate to replace the polarizer. At the same time, since the pixel definition layer can transmit infrared light, even if the pixel definition layer is set within the second display area, infrared light can still be transmitted within the second display area, allowing electronic components to function normally. Electronic components can be placed under the display panel, that is, under-display electronic component technology can be adopted, thus simultaneously employing PLP technology and under-display electronic component technology.

[0041] In some embodiments, as shown in Figures 1 to 5 and Figures 7 to 10, the display panel 1 further includes a pixel defining layer 153. The visible light transmittance of the pixel defining layer 153 is greater than that of the pixel defining layer 152. The pixel defining layer 153 is at least disposed within the second display area 101b. By including the pixel defining layer 153 in the display panel 1, where the visible light transmittance of the pixel defining layer 153 is greater than that of the pixel defining layer 152, and where the pixel defining layer 153 is at least disposed within the second display area 101b, the visible light transmittance of the second display area can be improved. When electronic components function using visible light or using both visible and infrared light, the second display area can transmit visible light, thereby enabling the electronic components to function normally.

[0042] Specifically, for some electronic components, such as facial recognition sensors, visible light and infrared light may be required to achieve facial recognition. Therefore, by increasing the visible light transmittance and infrared light transmittance of the second display area through a pixel-limiting layer, the electronic components can operate normally, and the second display area can be displayed normally. This allows the setting area of ​​the electronic components on the display panel to be displayed normally, and PLP technology can be used to set the electronic components under the display panel.

[0043] Specifically, the infrared light transmittance of the pixel-defined layer is greater than or equal to a preset value.

[0044] In some embodiments, as shown in Figures 2, 3, 4, 9, and 10, the display panel 1 includes a plurality of pixel units 21, and each pixel unit 21 includes a plurality of sub-pixel units with different luminous colors (e.g., a first sub-pixel unit 211, a second sub-pixel unit 212, and a third sub-pixel unit 213).

[0045] Within the second display area 101b, the pixel defining layer 153 is disposed around the sub-pixel units, and the pixel defining layer 153 is continuous between two adjacent sub-pixel units. By distributing the pixel defining layer around the sub-pixel units within the second display area, and ensuring the continuity of the pixel defining layer between two adjacent sub-pixel units, the visible light transmittance within the second display area is high, and the pixel defining layer can transmit infrared light, thereby enabling the normal operation of electronic components.

[0046] Specifically, as shown in Figures 2, 3, 4, and 9, the pixel electrode layer 151 includes multiple pixel electrodes. In the second display area 101b, a pixel limiting layer 153 is provided between adjacent pixel electrodes, which can improve the visible light transmittance of the second display area 101b. The pixel limiting layer can transmit infrared light, so that the electronic components can work normally when they need visible light and infrared light to perform their functions.

[0047] Specifically, in the embodiments of this application, when a pixel definition layer or a pixel limitation layer is provided on the pixel electrode layer, the pixel definition layer or the pixel limitation layer will cover part of the pixel electrode layer, which is not shown in some of the accompanying drawings.

[0048] In some embodiments, as shown in FIG2 and FIG9, the display panel 1 further includes a pixel electrode layer 151, and the pixel defining layer 153 is also disposed in the first display area 101a. The pixel defining layer 153 is disposed between the pixel defining layer 152 and the planarization layer 14.

[0049] Within the first display area 101a, the pixel defining layer 153 is disposed around the sub-pixel unit, and the pixel defining layer 153 is continuous between two adjacent sub-pixel units. The width of the overlap between the projection of the pixel defining layer 152 on the substrate 11 and the projection of the pixel electrode layer 151 on the substrate 11 is greater than the width of the overlap between the projection of the pixel defining layer 153 on the substrate 11 and the projection of the pixel electrode layer 151 on the substrate 11. By distributing the pixel defining layer around the sub-pixel unit within the first display area, the pixel defining layer can be configured to completely surround the pixel electrode, avoiding display abnormalities caused by the lack of surrounding the pixel electrode. Furthermore, since the pixel defining layer is disposed within the first display area, and the pixel defining layer is disposed between the pixel defining layer and the planarization layer, the pixel defining layer can absorb and block external light, reducing the reflectivity of the display panel, thereby balancing the low reflectivity of the display panel and the high transmittance of the area where electronic components are located.

[0050] Specifically, as shown in Figures 4, 9, and 10, Figure 4 shows that within the second display area 101b, the display panel 1 includes multiple driving islands 12a and at least one high-transmittance area 12b. Each driving island 12a includes multiple pixel driving circuits, which are connected to each sub-pixel unit. For example, one driving island 12a includes three pixel driving circuits, which are connected to eight sub-pixel units. The number of traces in each high-transmittance area 12b is relatively small, thereby improving the light-gathering effect of electronic components.

[0051] Specifically, as shown in Figures 4 and 5, pixel unit 21 includes a first sub-pixel unit 211, a second sub-pixel unit 212, and a third sub-pixel unit 213. The first sub-pixel unit 211 and the third sub-pixel unit 213 are alternately arranged in the same row and in the same column. The first sub-pixel unit 211 and the second sub-pixel unit 212 are arranged in two adjacent rows and in two adjacent columns.

[0052] Specifically, the emission colors of the first sub-pixel unit 211, the second sub-pixel unit 212, and the third sub-pixel unit 213 can be red, green, and blue, respectively. However, the embodiments of this application are not limited to this. The emission colors of the first sub-pixel unit 211, the second sub-pixel unit 212, and the third sub-pixel unit 213 can be red, green, and blue, or green, red, blue, and red, or blue, green, and red. Alternatively, the emission color of at least one sub-pixel unit can be white.

[0053] As shown in Figure 4, the pixel limiting layer 153 is disposed in the second display area 101b. From the boundary 153a of the pixel limiting layer 153, it can be seen that the pixel limiting layer 153 has an opening in the area corresponding to each sub-pixel unit, and the pixel limiting layer 153 is continuous between each sub-pixel unit.

[0054] As shown in Figure 10, both the pixel limiting layer 153 and the pixel defining layer 152 are disposed within the first display area 101a. From the boundaries 152a of the pixel defining layer 152 and 153a of the pixel limiting layer 153, it can be seen that the area of ​​the overlapping portion of the projection of the pixel defining layer onto the substrate and the projection of the pixel electrode layer onto the substrate is greater than the area of ​​the overlapping portion of the projection of the pixel limiting layer onto the substrate and the projection of the pixel electrode layer onto the substrate. This allows the pixel limiting layer to define the opening of the sub-pixel, reducing the reflection of light by the pixel electrode and other conductive layers, and reducing the reflectivity of the display panel. Furthermore, the pixel limiting layer 153 has openings in the areas corresponding to each sub-pixel unit, and the pixel defining layer 152 also has openings in the areas corresponding to each sub-pixel unit, and the pixel defining layer 152 is continuous between each sub-pixel unit.

[0055] Specifically, compared to forming a pixel definition layer and a pixel limiting layer in the first and second display areas respectively to surround the pixel electrodes, which is impossible to complete the film formation of the two layers within a predetermined time due to process limitations, this embodiment first sets a pixel limiting layer in the first display area to surround the pixel electrodes. This allows the film formation of the pixel limiting layer to be completed within a predetermined time, and the pixel limiting layer can surround the pixel electrodes. Then, forming the pixel definition layer can reduce the reflectivity of the display panel, thereby balancing the visible light transmittance of the electronic component placement area, the low reflectivity of the display panel, and the stability of the pixel electrodes.

[0056] In some embodiments, as shown in Figures 2, 3, and 5, within the first display area 101a, the pixel definition layer 152 is disposed around the sub-pixel units, and the pixel definition layer 152 is continuous between adjacent sub-pixel units. By distributing the pixel definition layer around the sub-pixel units within the first display area, and ensuring the pixel definition layer is continuous between adjacent sub-pixel units, the reflectivity of the display panel can be reduced through the pixel definition layer. Furthermore, since the pixel definition layer and the pixel definition layer do not need to be stacked, the thickness of the display panel is reduced.

[0057] Specifically, as shown in Figures 2 and 3, it can be seen that in the first display area 101a, the pixel definition layer 152 is arranged around the sub-pixel unit, and in the second display area 101b, the pixel limiting layer 153 is arranged around the sub-pixel unit.

[0058] Specifically, as shown in Figure 2, the display panel 1 also includes a support pillar 154, which is disposed on the side of the pixel definition layer 152 away from the substrate 11 at the junction of the first display area 101a and the second display area 101b, and is disposed between the pixel definition layer 152 and the pixel limiting layer 153.

[0059] Specifically, as shown in Figure 3, at the junction of the first display area 101a and the second display area 101b, the pixel limiting layer 153 and the pixel defining layer 152 are in contact.

[0060] Specifically, as shown in Figures 4 and 5, the areas of the first, second, and third sub-pixel units can be unequal. Specifically, the area of ​​the third sub-pixel unit 213 can be larger than the area of ​​the first sub-pixel unit 211, and the area of ​​the first sub-pixel unit 211 can be larger than the area of ​​the second sub-pixel unit 212. Furthermore, the area of ​​the first sub-pixel unit within the first display area can be greater than or equal to the area of ​​the first sub-pixel unit within the second display area, the area of ​​the second sub-pixel unit within the first display area can be greater than or equal to the area of ​​the second sub-pixel unit within the second display area, and the area of ​​the third sub-pixel unit within the first display area can be greater than or equal to the area of ​​the third sub-pixel unit within the second display area.

[0061] Specifically, as shown in Figure 5, the pixel definition layer 152 is set within the first display area 101a. From the boundary 152a of the pixel definition layer 152, it can be seen that the pixel definition layer 152 has openings in the areas corresponding to each sub-pixel unit, and the pixel definition layer 152 is continuous between each sub-pixel unit.

[0062] In some embodiments, as shown in Figures 6, 7, and 8, the pixel definition layer 152 is further disposed within the second display area 101b. By disposing the pixel definition layer 152 within the second display area, the reflectivity of the second display area can be reduced, further lowering the reflectivity of the display panel.

[0063] In some embodiments, as shown in FIG6, FIG7 and FIG8, the display panel 1 includes a plurality of pixel units 21, and each pixel unit 21 includes a plurality of sub-pixel units with different light emission colors;

[0064] Within the second display area 101b, the pixel definition layer 152 includes a plurality of pixel definition portions 152b, each of which surrounds a sub-pixel unit, with adjacent pixel definition portions 152b spaced apart. By including a plurality of pixel definition portions within the pixel definition layer of the second display area, with each pixel definition portion surrounding a sub-pixel unit and adjacent pixel definition portions spaced apart, the reflectivity of the second display area can be reduced through the pixel definition portions, and a material with high transmittance can be disposed between adjacent pixel definition portions, thereby improving the visible light transmittance of the second display area.

[0065] Specifically, as shown in Figure 8, a pixel definition section 152b is provided around each sub-pixel unit. From the boundary 152a of the pixel definition layer 152, it can be seen that each pixel definition section 152b only needs to cover the pixel electrode. A material with high transmittance can be provided between adjacent pixel definition sections 152b to improve the visible light transmittance of the second display area.

[0066] In some embodiments, as shown in Figures 7 and 8, the display panel 1 further includes a pixel defining layer 153. The visible light transmittance of the pixel defining layer 153 is greater than that of the pixel defining layer 152. Within the second display area 101b, the pixel defining layer 153 is disposed between adjacent pixel defining portions 152b. By disposing the pixel defining layer 153 between adjacent pixel defining portions 152b, the visible light transmittance of the second display area can be improved, and the pixel defining layer can fill the area between the pixel defining layers, facilitating the formation of subsequent film layers.

[0067] Specifically, as shown in Figures 7 and 8, it can be seen that in the second display area 101b, the pixel definition layer 153 fills between adjacent pixel definition portions 152b, and in the first display area 101a, the pixel definition layer 152 is arranged around the sub-pixel unit, and the pixel definition layer 152 is continuous between adjacent sub-pixel units.

[0068] In some embodiments, as shown in Figures 6 and 8, the display panel 1 further includes a support pillar 154. The visible light transmittance of the support pillar 154 is greater than that of the pixel definition layer 152. The support pillar 154 is disposed on the side of the pixel definition layer 152 away from the substrate 11, and is disposed between adjacent pixel definition portions 152b. By making the visible light transmittance of the support pillar greater than that of the pixel definition layer, and by disposing the support pillar between adjacent pixel definition portions, the visible light transmittance of the second display area can be improved. Furthermore, the support pillar can fill the area between adjacent pixel definition portions without the need for additional film layers, thus reducing process steps.

[0069] Specifically, the infrared light transmittance of the support column is greater than or equal to a preset value.

[0070] Specifically, as shown in Figures 6 and 8, it can be seen that within the second display area 101b, the support pillar 154 is disposed between two adjacent pixel definition portions 152b, and the support pillar 154 is continuous between two adjacent pixel definition portions 152b, thereby improving the visible light transmittance of the second display area.

[0071] Specifically, as shown in Figure 8, the areas of the first sub-pixel unit 211, the second sub-pixel unit 212, and the third sub-pixel unit 213 are different, and the areas of the multiple pixel definition portions 152b surrounding the first sub-pixel unit 211, the second sub-pixel unit 212, and the third sub-pixel unit are not equal.

[0072] In some embodiments, as shown in FIG11, the display panel 1 includes a plurality of pixel units 21, and each pixel unit 21 includes a plurality of sub-pixel units with different emitting colors.

[0073] Within the display area 101, the pixel definition layer 152 is disposed around the sub-pixel units, and the pixel definition layer 152 is continuous between adjacent sub-pixel units. By distributing the pixel definition layer around the sub-pixel units and ensuring its continuity between adjacent sub-pixel units, the electronic components can function normally when only infrared light is required, eliminating the need for a pixel definition layer, reducing process steps, and the pixel definition layer can also reduce the reflectivity of the display panel.

[0074] Specifically, as shown in Figure 11, the pixel definition layer 152 is set across the entire surface and has an opening in the area of ​​the corresponding sub-pixel unit. The planar design of the pixel definition layer 152 in the first display area and the second display area can be seen in Figures 5 and 4 respectively. It is only necessary to change the display limiting layer in Figure 4 to the pixel definition layer.

[0075] In some embodiments, as shown in FIG11, the display panel 1 further includes a support pillar 154, the material of which is the same as the material of the pixel definition layer 152. By making the material of the support pillar the same as the material of the pixel definition layer, the support pillar and the pixel definition layer can be formed simultaneously, reducing the number of process steps.

[0076] Specifically, as shown in Figures 6, 7, and 11, when setting the pixel definition layer in the second display area 101b, the pixel definition layer and support pillars can be formed simultaneously through a semi-transparent photomask, reducing process steps and improving the manufacturing effect of the display panel.

[0077] In some embodiments, as shown in Figures 2, 3, 6, 7, and 9, the display panel 1 further includes a support pillar 154, the material of which is the same as the material of the pixel defining layer 153. By making the material of the support pillar the same as the material of the pixel defining layer 153, the pixel defining layer and the support pillar can be formed simultaneously, reducing process steps, and the support pillar has a higher visible light transmittance, improving the light-gathering effect of the electronic components.

[0078] Specifically, as shown in Figures 2 and 3, when a pixel limiting layer 153 is set in the second display area 101b and a pixel definition layer 152 is set in the first display area 101a, the pixel definition layer 152 can be formed first, and then the pixel limiting layer and the support pillar can be formed simultaneously, reducing the number of process steps.

[0079] In some embodiments, as shown in FIG3, the display panel 1 further includes a support post 154. The support post 154 is disposed on the side of the pixel definition layer 152 away from the substrate 11. The support post 154 includes a first portion 154a and a second portion 154b. The first portion 154a is disposed between the second portion 154b and the pixel definition layer 152. The width L1 of the first portion 154a is greater than the width L2 of the second portion 154b. By including a first portion and a second portion in the support post, and making the width of the first portion greater than the width of the second portion, the contact area between the support post and the pixel definition layer is larger, resulting in a higher adhesion effect between the support post and the pixel definition layer, thus preventing the support post from falling off.

[0080] Specifically, the pixel defining layer, planarization layer, and support pillars can be made of the same material, which is a resin with good visible light transmittance, such as at least one of polyacrylate resin, epoxy resin, phenolic resin, polyamide resin, polyimide resin, unsaturated polyester resin, polyphenylene ether resin, polyphenylene sulfide resin, benzocyclobutene, and silica-based organic materials.

[0081] Specifically, the pixel definition layer can be made of the same material as the support pillar, which is a material with low visible light transmittance and high infrared light transmittance.

[0082] In some embodiments, as shown in FIG2, the display panel 1 further includes a color filter layer 17, which is disposed on the side of the pixel definition layer 152 away from the planarization layer 14. By including a color filter layer in the display panel, there is no need to provide a polarizer, which can reduce the thickness of the display panel and improve the transmittance of the display panel. Furthermore, since the pixel definition layer is disposed at least in the first display area, the reflectivity of the display panel can be reduced. The pixel definition layer can also transmit infrared light, thereby enabling the normal function of electronic components, thus simultaneously employing PLP technology and under-display electronic component technology.

[0083] Specifically, as shown in Figure 2, the display panel 1 also includes a driving circuit layer 12, a light-emitting functional layer 155, and an encapsulation layer 16. The driving circuit layer 12 includes a light-shielding layer 121, a blocking layer 122, a buffer layer 123, a first active layer 124, a first gate insulating layer 125, a first gate layer 126, a second gate insulating layer 127, a second gate layer 128, a first interlayer insulating layer 129, a second active layer 131, a third gate insulating layer 132, a third gate layer 133, a second interlayer insulating layer 134, a first source-drain layer 135, a second source-drain layer 136, and a planarization layer 14. The planarization layer 14 includes a first planarization layer 141, a second planarization layer 142, and a third planarization layer 143.

[0084] Specifically, the materials of the first active layer and the second active layer can be different. For example, the material of the first active layer is silicon semiconductor, specifically low-temperature polycrystalline silicon, and the material of the second active layer can be oxide semiconductor, specifically metal oxide semiconductor, such as indium gallium zinc oxide.

[0085] Specifically, the light-emitting functional layer 155 includes a light-emitting material layer and a common electrode layer. Some of the film layers in the light-emitting material layer can be disposed within the opening of the pixel definition layer or the pixel limiting layer. Some of the film layers in the light-emitting material layer can be disposed as a whole layer, and the common electrode layer can be disposed as a whole layer.

[0086] Specifically, the encapsulation layer 16 can be disposed between the color filter layer 17 and the light-emitting functional layer 155.

[0087] Specifically, the color filter layer 17 may include a first color resist, a second color resist, and a third color resist, respectively disposed corresponding to the first sub-pixel unit, the second sub-pixel unit, and the third sub-pixel unit. The first color resist, the second color resist, and the third color resist may be red, green, and blue, respectively, and the transmitted color of the first color resist, the second color resist, and the third color resist may be the same as the emitted color of the first sub-pixel unit, the second sub-pixel unit, and the third sub-pixel unit, respectively. The color filter layer may also include a black matrix.

[0088] Specifically, for the boundary area between the first display area 101a and the second display area 101b, when a pixel definition layer 152 is set in the first display area 101a and a pixel limiting layer 153 is set in the second display area 101b, either a pixel definition layer 152 or a pixel limiting layer 153 can be set in the boundary area, or a support pillar can be set; when both the first display area 101a and the second display area 101b have a pixel limiting layer 153, and a pixel definition layer 152 is set in the first display area 101a, a pixel limiting layer 153 can be set in the boundary area; when a pixel definition layer 152 is set in the first display area 101a and a ring-shaped pixel definition layer 152 is set in the second display area 101b, a pixel limiting layer 153 or a support pillar with high transmittance can be set in the boundary area.

[0089] Specifically, the above embodiments have described the display panel in detail from aspects such as the film layer structure and materials of the display panel. It is understood that when there is no conflict between the embodiments, the embodiments can be combined. For example, the display panel further includes a pixel defining layer, the visible light transmittance of the pixel defining layer is greater than the visible light transmittance of the pixel defining layer, the pixel defining layer is at least disposed in the second display area, the pixel defining layer is also disposed in the second display area, the display panel further includes a support pillar, the support pillar is disposed on the side of the pixel defining layer away from the substrate, the support pillar includes a first part and a second part, the first part is disposed between the second part and the pixel defining layer, and the width of the first part is greater than the width of the second part.

[0090] Meanwhile, this application provides a display device, which includes a display panel as described in any of the above embodiments.

[0091] Specifically, as shown in Figure 12, the display device 3 includes a display panel 1 and an electronic component 31, which is disposed in the second display area 101b.

[0092] Specifically, the electronic component can be a facial recognition sensor.

[0093] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0094] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0095] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0096] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A display panel comprising a display area, the display area including a first display area and a second display area corresponding to the location of electronic components, the display panel comprising: Substrate; A planarization layer is disposed on one side of the substrate; A pixel definition layer is disposed on the side of the planarization layer away from the substrate; Wherein, the visible light transmittance of the pixel definition layer is less than the visible light transmittance of the planarization layer, the pixel definition layer is at least disposed in the first display area, and the infrared light transmittance of the pixel definition layer is greater than or equal to a preset value.

2. The display panel according to claim 1, wherein, The display panel further includes a pixel defining layer, the visible light transmittance of which is greater than that of the pixel defining layer, and the pixel defining layer is disposed at least within the second display area.

3. The display panel according to claim 2, wherein, The display panel includes multiple pixel units, and each pixel unit includes multiple sub-pixel units with different luminous colors; Within the second display area, the pixel defining layer is disposed around the sub-pixel unit, and the pixel defining layer is continuous between two adjacent sub-pixel units.

4. The display panel according to claim 3, wherein, The display panel further includes a pixel electrode layer, and the pixel defining layer is also disposed within the first display area. The pixel defining layer is disposed between the pixel definition layer and the planarization layer. Within the first display area, the pixel defining layer is disposed around the sub-pixel unit, and the pixel defining layer is continuous between two adjacent sub-pixel units. The width of the overlap between the projection of the pixel defining layer on the substrate and the projection of the pixel electrode layer on the substrate is greater than the width of the overlap between the projection of the pixel defining layer on the substrate and the projection of the pixel electrode layer on the substrate.

5. The display panel according to claim 3, wherein, Within the first display area, the pixel definition layer is disposed around the sub-pixel unit, and the pixel definition layer is continuous between two adjacent sub-pixel units.

6. The display panel according to claim 1, wherein, The pixel definition layer is also disposed within the second display area.

7. The display panel according to claim 6, wherein, The display panel includes multiple pixel units, and each pixel unit includes multiple sub-pixel units with different luminous colors; Within the second display area, the pixel definition layer includes multiple pixel definition sections, each of which is arranged around a sub-pixel unit, and adjacent pixel definition sections are spaced apart.

8. The display panel according to claim 7, wherein, The display panel further includes a pixel defining layer, the visible light transmittance of which is greater than that of the pixel defining layer. In the second display area, the pixel defining layer is disposed between adjacent pixel defining portions.

9. The display panel according to claim 7, wherein, The display panel further includes a support pillar, the visible light transmittance of which is greater than that of the pixel definition layer. The support pillar is disposed on the side of the pixel definition layer away from the substrate and is disposed between adjacent pixel definition portions.

10. The display panel according to claim 6, wherein, The display panel includes multiple pixel units, and each pixel unit includes multiple sub-pixel units with different luminous colors; Within the display area, the pixel definition layer is arranged around the sub-pixel unit, and the pixel definition layer is continuous between two adjacent sub-pixel units.

11. The display panel according to claim 6, wherein, The display panel also includes support pillars, the support pillars being made of the same material as the pixel definition layer.

12. The display panel according to claim 1, wherein, The display panel further includes a support pillar disposed on the side of the pixel definition layer away from the substrate. The support pillar includes a first part and a second part, the first part being disposed between the second part and the pixel definition layer, and the width of the first part being greater than the width of the second part.

13. The display panel according to claim 1, wherein, The display panel further includes a color filter layer, which is disposed on the side of the pixel definition layer away from the planarization layer.

14. A display device comprising a display panel, the display panel including a display area, the display area including a first display area and a second display area corresponding to the location of electronic components, the display panel comprising: Substrate; A planarization layer is disposed on one side of the substrate; A pixel definition layer is disposed on the side of the planarization layer away from the substrate; Wherein, the visible light transmittance of the pixel definition layer is less than the visible light transmittance of the planarization layer, the pixel definition layer is at least disposed in the first display area, and the infrared light transmittance of the pixel definition layer is greater than or equal to a preset value.

15. The display device according to claim 14, wherein, The display panel further includes a pixel defining layer, the visible light transmittance of which is greater than that of the pixel defining layer, and the pixel defining layer is disposed at least within the second display area.

16. The display device according to claim 15, wherein, The display panel includes multiple pixel units, and each pixel unit includes multiple sub-pixel units with different luminous colors; Within the second display area, the pixel defining layer is disposed around the sub-pixel unit, and the pixel defining layer is continuous between two adjacent sub-pixel units.

17. The display device according to claim 16, wherein, The display panel further includes a pixel electrode layer, and the pixel defining layer is also disposed within the first display area. The pixel defining layer is disposed between the pixel definition layer and the planarization layer. Within the first display area, the pixel defining layer is disposed around the sub-pixel unit, and the pixel defining layer is continuous between two adjacent sub-pixel units. The width of the overlap between the projection of the pixel defining layer on the substrate and the projection of the pixel electrode layer on the substrate is greater than the width of the overlap between the projection of the pixel defining layer on the substrate and the projection of the pixel electrode layer on the substrate.

18. The display device according to claim 16, wherein, Within the first display area, the pixel definition layer is disposed around the sub-pixel unit, and the pixel definition layer is continuous between two adjacent sub-pixel units.

19. The display device according to claim 14, wherein, The pixel definition layer is also disposed within the second display area.

20. The display device according to claim 19, wherein, The display panel includes multiple pixel units, and each pixel unit includes multiple sub-pixel units with different luminous colors; Within the second display area, the pixel definition layer includes multiple pixel definition sections, each of which is arranged around a sub-pixel unit, and adjacent pixel definition sections are spaced apart.

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