Display panel and display device

Abstract

An embodiment of the present application provides a display panel and a display device, the display panel comprising: a substrate; a pixel electrode layer provided on the substrate, the pixel electrode layer including a plurality of pixel electrodes distributed in an array; and a pixel definition layer located on the side of the pixel electrode layer away from the substrate, the pixel definition layer including a plurality of first isolation parts distributed at intervals, the first isolation parts being annular, the pixel aperture being defined to be surrounded by the first isolation parts, and the edge of the first orthogonal projection of each pixel electrode on the substrate being located within the second orthogonal projection of each first isolation part on the substrate. The first isolation parts have low light transmittance and can block a part of the light passing between two adjacent pixel electrodes, so that the first isolation parts can improve the diffraction situation between two adjacent anodes, and further improve the display effect of the display panel.

Description

[Technical field]

[0001] This application claims priority to Chinese Patent Application No. 202110880383.6, entitled "Display Panel and Display Device," filed on August 2, 2021, the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the technical field of display devices, and in particular to a display panel and a display device. [Background technology]

[0003] With the rapid development of electronic devices, users have higher and higher requirements for screen occupancy, and full-screen display of electronic devices has been increasingly paid attention to by the industry. In the field of smartphones, products are being pursued to have a higher screen occupancy. For example, conventional electronic devices such as mobile phones, tablet computers, etc. need to integrate a front camera, a handset, an infrared sensing element, etc. In the conventional technology, a notch or a hole is made in the display panel, so that external light can enter the light-sensitive element located below the screen through the notch or hole on the screen. However, none of these electronic devices are truly full-screen, and cannot display in each area of ​​the entire screen, for example, the screen cannot be displayed in the corresponding area of ​​the front camera.

[0004] Therefore, under-screen photosensitive assembly technology emerged in a timely manner. However, due to the diffraction effect caused by the periodic pixel arrangement of the display panel itself, the phenomenon of star-burst appears when strong light is irradiated. Photosensitive element This affects the imaging quality. Summary of the Invention [Problem to be solved by the invention]

[0005] The embodiments of the present application provide a display panel and a display device, which aims to improve the display effect of the display panel. [Means for solving the problem]

[0006] An embodiment of a first aspect of the present application provides a display panel comprising a substrate, a pixel electrode layer provided on the substrate and including a plurality of pixel electrodes arranged in an array, and a pixel definition layer located on a side of the pixel electrode layer away from the substrate, the pixel definition layer including a plurality of spaced apart first isolation portions, the first isolation portions being annular, a pixel aperture being defined by being surrounded by the first isolation portions, and an edge of a first orthogonal projection of each pixel electrode on the substrate being located within a second orthogonal projection of each first isolation portion on the substrate.

[0007] According to an embodiment of the first aspect of the present application, the pixel definition layer further comprises second isolated portions filled between adjacent first isolated portions, and the light transmittance of the first isolated portions is smaller than the light transmittance of the second isolated portions.

[0008] An embodiment of the second aspect of the present application further provides a display device including a display panel according to any one of the embodiments of the first aspect.

[0009] JPEG0007634697000001.jpg71170

[0010] In a display panel according to an embodiment of the present application, the display panel includes a substrate, a pixel electrode layer, and a pixel definition layer. The pixel electrode layer includes a plurality of pixel electrodes arranged in an array, and the pixel electrodes drive the display panel to display. The pixel definition layer includes a plurality of first isolation portions arranged at intervals, and a pixel aperture is formed surrounded by the first isolation portions. An edge of a first orthogonal projection of each pixel electrode on the substrate is located within a second orthogonal projection of each first isolation portion on the substrate, that is, a gap between two adjacent first isolation portions is located within a gap between two adjacent pixel electrodes. In addition, since the light transmittance of the first isolation portion is low and the first isolation portion can block a part of a light beam passing between two adjacent pixel electrodes, the first isolation portion is for example Two adjacent anodes The pixel electrode Therefore, the diffraction condition between the light-emitting diodes can be improved, and the display effect of the display panel can be further improved. [Brief description of the drawings]

[0011] [Figure 1] 1 is a structural schematic diagram of a display panel according to an embodiment of the first aspect of the present application. [Diagram 2] FIG. 2 is a partially enlarged schematic diagram of the structure I in FIG. [Diagram 3] FIG. 3 is a cross-sectional view taken along line AA in FIG. [Figure 4] 2 is a schematic planar structure diagram of a pixel electrode and a first isolation portion in a display panel according to an embodiment of the first aspect of the present application. FIG. [Diagram 5] 3 is a structural schematic diagram of a first isolation portion in a display panel according to an embodiment of the first aspect of the present application. FIG. [Figure 6] A coordinate reference diagram is shown. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] For a better understanding of the present application, a display panel and a display device according to an embodiment of the present application will be described in detail below with reference to FIGS.

[0013] 1, the display panel 10 includes a display area AA and a non-display area NA surrounding the display area AA. In other embodiments, the display panel 10 does not need to include the non-display area NA.

[0014] Optionally, the display area AA includes a first display area and a second display area, where the light transmittance of the first display area is greater than that of the second display area, and the first display area is used to realize a light-transmitting display function of the display panel 10. A photosensitive element can be provided on the backlight side of the display panel 10, and the photosensitive element can obtain light information through the first display area.

[0015] As shown in Fig. 2 to Fig. 4, a display panel 10 according to an embodiment of the first aspect of the present application includes a substrate 100, a pixel electrode layer 200 provided on the substrate 100, and a pixel definition layer 300 located on the side of the pixel electrode layer 200 away from the substrate 100. The pixel electrode layer 200 has a plurality of pixel electrodes 210 arranged in an array. The pixel definition layer 300 includes a plurality of first isolation portions 310 arranged at intervals, the first isolation portions 310 being annular and surrounding the first isolation portions 310 to define a pixel aperture 320, and an edge of a first orthogonal projection 211 of each pixel electrode 210 on the substrate 100 is located within a second orthogonal projection 311 of each first isolation portion 310 on the substrate 100.

[0016] As shown in Fig. 4, the left side of the P axis in Fig. 4 shows a schematic planar structure of the pixel electrode 210, i.e., the schematic distribution structure of the first orthogonal projection 211. The right side of the P axis in Fig. 4 shows a schematic planar structure of the first isolation portion 310, i.e., the schematic distribution structure of the second orthogonal projection 311.

[0017] In the display panel 10 according to the embodiment of the present application, the display panel 10 includes a substrate 100, a pixel electrode layer 200, and a pixel definition layer 300. The pixel electrode layer 200 includes a plurality of pixel electrodes 210 arranged in an array, and the pixel electrodes 210 are used to drive the display panel 10 for display. The pixel definition layer 300 includes a plurality of first isolation portions 310 arranged at intervals, and a pixel opening 320 is formed by being surrounded by the first isolation portions 310. An edge of a first orthogonal projection 211 of each pixel electrode 210 on the substrate 100 is located within a second orthogonal projection 311 of each first isolation portion 310 on the substrate 100, i.e., a gap between two adjacent first isolation portions 310 is located within a gap between two adjacent pixel electrodes 210. In addition, the first isolation portion 310 has a low light transmittance and can block a part of the light passing between two adjacent pixel electrodes 210. Therefore, the first isolation portion 310 has a low light transmittance and can block a part of the light passing between two adjacent pixel electrodes 210. for example Two adjacent anodes The pixel electrode This can improve the diffraction situation between the light emitting diodes 11 and 12, and further improve the display effect of the display panel 10.

[0018] Optionally, the light transmittance of the first isolation portion 310 is less than 70%, i.e., the light transmittance of the first isolation portion 310 is low; for example Two adjacent anodes The pixel electrode Therefore, the diffraction situation between the light-emitting diodes 12 and 13 can be improved, and the display effect of the display panel 10 can be further improved.

[0019] Furthermore, in the embodiment of the present application, there is no need to change the shape of the pixel opening 320, and no need to add a new film layer, which simplifies the manufacturing method of the display panel 10 and improves the manufacturing efficiency of the display panel 10.

[0020] The substrate 100 includes, for example, a base material 110 and a driving element layer 120 provided on the base material 110, where the driving element layer 120 includes structures such as a driving circuit. Optionally, the display panel 10 further includes a second electrode layer located on a side of the pixel definition layer 300 away from the substrate 100, where the second electrode layer includes, for example, a common electrode 500. Optionally, the display panel 10 further includes a sealing layer 600 located on a side of the common electrode 500 away from the pixel definition layer 300.

[0021] In some optional embodiments, the pixel definition layer 300 further includes a second isolation portion 330, the second isolation portion 330 being filled between adjacent first isolation portions 310, and the light transmittance of the first isolation portion 310 being smaller than the light transmittance of the second isolation portion 330.

[0022] In these optional embodiments, the second isolation portion 330 is provided to ensure the flatness of the surface of the pixel definition layer 300 away from the substrate 100, and further ensure the flatness of the common electrode 500, thereby improving problems such as poor contact of the common electrode 500 caused by the unevenness of the pixel definition layer 300. In addition, the light transmittance of the second isolation portion 330 is greater than that of the first isolation portion 310, and the high light transmittance of the second isolation portion 330 improves the light transmittance of the display panel 10, making it easier for the photosensitive assembly to obtain light information on the backlight side of the display panel 10.

[0023] Optionally, as shown in Fig. 3, the display panel 10 further includes light-emitting units 400 with different emission colors, each of which is located in each pixel opening 320. Optionally, the light-emitting units 400 are arranged in rows and columns along a row direction (X direction in Fig. 2) and a column direction (Y direction in Fig. 2). Each light-emitting unit 400, together with a corresponding pixel electrode 210 and a common electrode 500, constitutes a sub-pixel, and the pixel electrode 210 and the common electrode 500 cooperate to drive the light-emitting unit 400 to emit light.

[0024] In some alternative embodiments, as shown in Figures 4 and 5, the second orthogonal projection 311 includes a second inner edge 312 facing the pixel aperture 320 and a second outer edge 313 away from the pixel aperture 320, and each of the second outer edges 313 is surrounded by an isolated region, and the isolated region in which at least two light-emitting units 400 of the same color are located has a different size. basis This is an isolated area in which the orthogonal projection of the light-emitting unit 400 on the plate 100 is located.

[0025] In these alternative embodiments, the first orthogonal projection 211 and the light-emitting unit 400 are both located within the isolated region. color Since the sizes of the isolated regions of the light emitting units 400 are different, the light diffraction phenomenon between the light emitting units 400 of the same color can be improved, and the display effect of the display panel 10 can be further improved.

[0026] 3 and 4 , in some optional embodiments, the first orthogonal projection 211 has a first outer edge 212, and in the isolation region and the first orthogonal projection 211 located therein, there is a first distance D1 between the second outer edge 313 and the first outer edge 212, and the first distance D1 is greater than 0. This can ensure that the first isolation portion 310 can better cover the edge of the pixel electrode 210, and the first isolation portion 310 can block at least a part of the light passing through the gap between two adjacent pixels, so as to better improve the diffraction problem between two adjacent pixel electrodes 210, and improve the display effect of the display panel 10.

[0027] Optionally, the first spacing D1 corresponding to at least two pixel electrodes 210 is different. The first spacing D1 corresponding to a pixel electrode 210 is the distance between a first outer edge 212 of a first orthogonal projection 211 of the pixel electrode 210 on the substrate 100 and a second outer edge 313 of a second orthogonal projection 311 of a first isolation portion 310 provided around the pixel electrode 210 on the substrate 100.

[0028] In these optional embodiments, when the first distances D1 corresponding to at least two pixel electrodes 210 are different and the shapes and sizes of the at least two pixel electrodes 210 are identical, it is still possible to avoid the shapes and sizes of the first isolation portions 310 corresponding to the at least two pixel electrodes 210 from being identical, and further to avoid the formation of regular slits between adjacent first isolation portions 310, thereby improving the diffraction phenomenon and enhancing the display effect of the display panel 10.

[0029] In some alternative embodiments, the first distance D1 corresponding to at least two light-emitting units 400 of the same color is different. The first distance D1 corresponding to the light-emitting unit 400 is the distance between the first outer edge 212 and the second outer edge 313 in the first orthogonal projection 211 of the pixel electrode 210 located on the side of the light-emitting unit 400 facing the substrate 100 and the second orthogonal projection 311 of the first isolation portion 310 provided around the pixel electrode 210.

[0030] In these optional embodiments, the same-color light-emitting units 400 refer to the light-emitting units 400 having the same light-emitting color. Because the first intervals D1 corresponding to the same-color light-emitting units 400 are different, the light diffraction situation between the same-color light-emitting units 400 can be improved, and the display effect of the display panel 10 can be improved.

[0031] Optionally, the first intervals D1 corresponding to two adjacent light-emitting units 400 of the same color are different. Generally, when the pixel electrodes 210 corresponding to the same light-emitting units 400 have the same shape and size, and the first intervals D1 corresponding to two adjacent light-emitting units 400 of the same color are different, the diffraction of light between the pixel electrodes 210 corresponding to the two adjacent light-emitting units 400 of the same color can be improved, and the display effect of the display panel 10 can be improved.

[0032] The two adjacent light-emitting units 400 of the same color may be two light-emitting units 400 of the same color adjacent in the row direction, or two light-emitting units 400 of the same color adjacent in the column direction, or may include two light-emitting units 400 of the same color adjacent in the row direction as well as two light-emitting units 400 of the same color adjacent in the column direction.

[0033] As shown in Figures 2 to 4, a combination of multiple different light-emitting units 400 constitutes a repeat unit 400a, and the display panel 10 includes multiple repeat units 400a arranged in an array, i.e., the pixel array structure of the display panel 10 is obtained by translating the repeat units 400a in the row and column directions.

[0034] In some alternative embodiments, the first intervals D1 corresponding to the light-emitting units 400 in at least two repeat units 400a are different. The first intervals D1 corresponding to the light-emitting units 400 in the repeat unit 400a are the distance between the first outer edge 212 of the first orthogonal projection 211 of the pixel electrode 210 located on the side of each light-emitting unit 400 in the repeat unit 400a facing the substrate 100, and the second outer edge 313 of the second orthogonal projection 311 of the first isolation portion 310 surrounding the pixel electrode 210. The first intervals D1 corresponding to the light-emitting units 400 in the at least two repeat units 400a may be different from one or more light-emitting units 400 in the at least two repeat units 400a, or may be different from all the first intervals D1 corresponding to the light-emitting units 400 in the at least two repeat units 400a.

[0035] Optionally, when the first spacing D1 corresponding to each light-emitting unit 400 in one repeat unit 400a is equal, the process difficulty can be reduced, the manufacturing difficulty of the display panel 10 can be reduced, and the manufacturing of the display panel 10 can be facilitated.

[0036] Optionally, when the first spacing D1 corresponding to the light-emitting units 400 in adjacent repeat units 400a is different, the diffraction problem between two adjacent repeat units 400a can be improved, and the display effect of the display panel 10 can be improved.

[0037] Here, the two adjacent repeat units 400a may be two repeat units 400a adjacent in the row direction, or may be two repeat units 400a adjacent in the column direction, or may include two repeat units 400a adjacent in the row direction as well as two repeat units 400a adjacent in the column direction.

[0038] Referring to FIG. 5, the position of the pixel electrode 210 is indicated by a dashed line in FIG.

[0039] 2 and 5, in some optional embodiments, the shapes of the isolation regions corresponding to at least two pixel electrodes 210 are different, so as to better improve the diffraction problem between the pixel electrodes 210 and improve the display effect. As shown in FIG. 5, the shape of the isolation region may be a pentagon, a hexagon, a circle, an ellipse, a rectangle, a square, a combination thereof, etc.

[0040] In some optional embodiments, the shapes of the isolated regions corresponding to the light-emitting units 400 in the at least two repeat units 400a are different. The isolated regions corresponding to the light-emitting units 400 in the repeat unit 400a refer to the isolated regions in which each light-emitting unit 400 is located in the repeat unit 400a. The different isolated regions corresponding to the light-emitting units 400 in the at least two repeat units 400a may mean that the isolated regions in which one or more light-emitting units 400 are located in the at least two repeat units 400a are different, or may mean that the isolated regions in which all light-emitting units 400 in the at least two repeat units 400a are located are different.

[0041] Optionally, the shapes of the isolated regions corresponding to the respective light emitting units 400 in the repeat unit 400a are the same, that is, the shapes of the isolated regions in which the respective light emitting units 400 in the repeat unit 400a are located are the same, which reduces the process difficulty, reduces the manufacturing difficulty of the display panel 10, and facilitates the manufacturing of the display panel 10.

[0042] Since the shapes of the isolated regions corresponding to the light emitting units 400 in the adjacent repeat units 400a are different, the diffraction problem between two adjacent repeat units 400a can be improved, and the display effect of the display panel 10 can be improved.

[0043] In some optional embodiments, the isolated regions in which at least two light-emitting units 400 of the same color are located have different shapes. For example, the isolated regions in which two adjacent light-emitting units 400 of the same color are located have different shapes, which can improve the diffraction problem between the pixel electrodes 210 corresponding to the two adjacent light-emitting units 400, and improve the display effect of the display panel 10.

[0044] As an optional embodiment, for example, the first interval D1 in the display panel 10 has two, three or more values. For example, the first interval D1 has nine values, which are x1, x2, x3, x4, x5, x6, x7, x8 and x9, and x1, x2, x3, x4, x5, x6, x7, x8 and x9 are not equal to each other. Optionally, the first intervals D1 corresponding to the light-emitting units 400 in the nine adjacent repeat units 400a are respectively taken as the above x1, x2, x3, x4, x5, x6, x7, x8 and x9, and the first isolated portions 310 corresponding to the light-emitting units 400 in the nine repeat units 400a are taken as a set, and the pixel definition layer 300 includes a plurality of sets of the first isolated portions 310. The nine adjacent repeat units 400a may be arranged in sequence along the row direction, or in sequence along the column direction, or in three rows and three columns. Alternatively, the first intervals D1 corresponding to the nine adjacent light-emitting units 400 of the same color are respectively taken as x1, x2, x3, x4, x5, x6, x7, x8 and x9, and the first isolated portions 310 corresponding to the nine light-emitting units 400 are regarded as one set, and the pixel definition layer 300 includes a plurality of sets of the first isolated portions 310. The nine adjacent light-emitting units 400 may be arranged in sequence along the row direction, or in sequence along the column direction, or in three rows and three columns.

[0045] As another selectable embodiment, for example, the shape of the isolated region in the display panel 10 is two, three or more, for example, the shape of the isolated region is nine, respectively s1, s2, s3, s4, s5, s6, s7, s8 and s9, and s1, s2, s3, s4, s5, s6, s7, s8 and s9 respectively represent different shapes. And the shapes of s1, s2, s3, s4, s5, s6, s7, s8 and s9 are not equal. Optionally, the shapes of the isolated regions corresponding to the light-emitting units 400 in the nine adjacent repeat units 400a are respectively s1, s2, s3, s4, s5, s6, s7, s8 and s9, respectively, and the first isolated portions 310 corresponding to the light-emitting units 400 in the nine repeat units 400a are a set, and the pixel definition layer 300 includes a plurality of sets of the first isolated portions 310. The nine adjacent repeat units 400a may be arranged in sequence along the row direction, or in sequence along the column direction, or in three rows and three columns. Alternatively, the first intervals D1 corresponding to the nine adjacent light-emitting units 400 of the same color are respectively taken as s1, s2, s3, s4, s5, s6, s7, s8 and s9, and the first isolated portions 310 corresponding to the nine light-emitting units 400 are one set, and the pixel definition layer 300 includes a plurality of sets of the first isolated portions 310. The nine adjacent light-emitting units 400 may be arranged in sequence along the row direction, or in sequence along the column direction, or in three rows and three columns.

[0046] An embodiment of the second aspect of the present application further provides a display device including the display panel 10 according to any one of the embodiments of the first aspect. Since the display device according to the embodiment of the second aspect of the present application includes the display panel 10 according to any one of the embodiments of the first aspect, the display device according to the embodiment of the second aspect of the present application has the beneficial effects of the display panel 10 according to any one of the embodiments of the first aspect, and the description thereof will be omitted here.

[0047] The display device in the embodiments of the present application may include, but is not limited to, devices with display capabilities, such as mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, door controls, smart landlines, and consoles.

[0048] Optionally, the display device further includes a photosensitive assembly spaced apart from the pixel electrodes 210. Light diffraction between adjacent pixel electrodes 210 affects the light information acquired by the photosensitive assembly.

[0049] Referring to FIG. 6, FIG. 6 shows a coordinate reference diagram.

[0050] JPEG0007634697000002.jpg105170

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[0059] Although the present invention has been described above with reference to the preferred embodiments, various improvements are possible without departing from the scope of the present application, and some of the components may be replaced with equivalents. In particular, as long as there is no structural contradiction, the technical features mentioned in each embodiment may be arbitrarily combined. The present application is not limited to the specific embodiments disclosed above, but includes all aspects falling within the scope of the claims.

Claims

1. A substrate; a pixel electrode layer provided on the substrate and including a plurality of pixel electrodes arranged in an array; a pixel definition layer located on a side of the pixel electrode layer away from the substrate; the pixel definition layer includes a plurality of spaced apart first isolation portions, the first isolation portions are annular, a pixel aperture is defined by being surrounded by the first isolation portions, and an edge of a first orthogonal projection of each of the pixel electrodes on the substrate is located within a second orthogonal projection of each of the first isolation portions on the substrate; A display panel further comprising a plurality of light-emitting units having different light-emitting colors, each of the light-emitting units being located in a corresponding one of the pixel openings, the second orthogonal projections including a second inner edge facing the pixel opening and a second outer edge away from the pixel opening, each of the second outer edges surrounding the corresponding one of the second outer edges forming an isolation region, and the isolation regions in which at least two of the light-emitting units of the same color are located have different sizes.

2. The display panel according to claim 1 , wherein the first isolation portion has a light transmittance of 70% or less.

3. 2. The display panel of claim 1, wherein the pixel definition layer further includes a second isolation portion filled between adjacent first isolation portions, and the light transmittance of the first isolation portion is smaller than the light transmittance of the second isolation portion.

4. The display panel according to claim 1 , wherein the light transmittance of the first isolation portion is 20% to 70%.

5. The first orthogonal projection has a first outer edge, and in the isolated region and the first orthogonal projection located within the isolated region, the first outer edge and the second outer edge have a first distance D1 between them, the first distance D1 is greater than 0, and the first distances D1 corresponding to at least two of the pixel electrodes are different; 2. The display panel of claim 1, wherein a plurality of the light-emitting units of different colors are combined to form a repeat unit, the display panel includes a plurality of the repeat units arranged in an array, and the first spacing D1 corresponding to the light-emitting units in at least two of the repeat units is different.

6. A display panel as described in claim 5, wherein the first spacing D1 corresponding to the light-emitting units in adjacent repeating units is different.

7. The display panel of claim 5 , wherein the first intervals D1 corresponding to at least two of the light-emitting units of the same color are different.

8. The display panel according to claim 7 , wherein the first intervals D1 corresponding to two adjacent light-emitting units of the same color are different from each other.

9. 6. The display panel of claim 5, wherein a plurality of the light-emitting units of different colors are combined to form a repeat unit, the display panel includes a plurality of the repeat units arranged in an array, and the shapes of the isolated regions corresponding to the light-emitting units in at least two of the repeat units are different.

10. A display panel as described in claim 9, wherein the shapes of the isolation regions corresponding to the light-emitting units in adjacent repeating units are different.

11. The display panel of claim 5 , wherein the isolated regions in which at least two of the light-emitting units of the same color are located have different shapes.

12. The display panel of claim 11 , wherein the isolated regions in which two adjacent light-emitting units of the same color are located are different in shape.

13. A display device comprising the display panel according to claim 1 .

14.

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