Display panel, display device

Abstract

The present disclosure relates to a display panel, a display device. The display panel comprises a substrate substrate and a pixel definition layer; the substrate substrate is provided with an opening hole arranged close to a first frame, the substrate substrate has a display area, the display area surrounds the opening hole, the display area comprises a first display area arranged between the opening hole and the first frame, and a second display area arranged outside the first display area; the pixel definition layer is arranged on one side of the substrate substrate, the pixel definition layer is provided with a plurality of pixel openings arranged in an array, and adjacent pixel openings are separated by a pixel definition part. By increasing the area of the pixel definition part of the first display area per unit area, increasing the flow rate of the fluid in the first display area, shortening the flow leveling time of the fluid in the first display area, the flatness of the packaging layer can be improved, the surface quality of the packaging layer is improved, and then the flatness of the display panel is improved, and the user experience is improved.

Description

Display panel, display device Technical Field

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

[0002] Smart terminal products often have holes punched in the display screen for front-facing devices or other components. To improve screen-to-body ratio and display effect, holes are usually punched in the top of the display screen, resulting in a very narrow display area at the top of the screen, making packaging difficult, and causing uneven flatness between the display area at the top of the screen and other areas. Summary of the Invention

[0003] Therefore, it is necessary to provide a display panel and display device that can improve flatness in response to the above-mentioned technical problems.

[0004] In a first aspect, this disclosure provides a display panel, comprising:

[0005] A substrate having an opening near a first border, the substrate having a display area surrounding the opening, the display area including a first display area disposed between the opening and the first border, and a second display area disposed outside the first display area;

[0006] A pixel definition layer is disposed on one side of the substrate. The pixel definition layer has a plurality of pixel openings arranged in an array, and adjacent pixel openings are separated by pixel defining portions.

[0007] The aforementioned display panel, by increasing the area of ​​the pixel limiting portion of the first display area per unit area, increases the flow rate of the fluid in the first display area and shortens the leveling time of the fluid in the first display area, thereby improving the flatness of the encapsulation layer, enhancing the surface quality of the encapsulation layer, and thus improving the flatness of the display panel and the user experience.

[0008] In one embodiment, it further includes:

[0009] Multiple support pillars are spaced apart on the pixel defining portion, and the density of the support pillars in the first display area is less than the density of the support pillars in the second display area.

[0010] Preferably, the ratio of the density of the support columns in the first display area to the density of the support columns in the second display area is 1:2 to 1:5.

[0011] Preferably, the ratio of the density of the support columns in the first display area to the density of the support columns in the second display area is 1:4.

[0012] In this way, by reducing the density of the support pillars in the first display area, the area of ​​the pixel-defining portion of the first display area per unit area is made larger, reducing the obstruction encountered by the fluid in the first display area, thereby increasing the flow rate of the fluid in the first display area and improving the flatness of the encapsulation layer.

[0013] In one embodiment, the pixel opening includes a first pixel opening in the first display area and a second pixel opening in the second display area, wherein the area of ​​the first pixel opening is smaller than the area of ​​the second pixel opening.

[0014] In this way, by reducing the size of the first pixel opening in the first display area, the area of ​​the pixel limiting portion of the first display area with the same unit area is made larger, thereby increasing the flow rate of fluid in the first display area and improving the flatness of the encapsulation layer.

[0015] In one embodiment, the pixel defining portion of the first display area is further provided with a strip-shaped groove, the groove being disposed between the openings of the first pixels in adjacent rows, or the groove being disposed between the openings of the first pixels in adjacent columns;

[0016] Preferably, the distance between adjacent pixel openings in the first display area is greater than the distance between pixel openings in the second display area.

[0017] In this way, a groove is added to the pixel limiting part of the first display area. The groove guides the fluid to flow to the first display area, increases the flow rate of the fluid in the first display area, and shortens the leveling time of the fluid in the first display area. This can improve the flatness of the encapsulation layer, improve the surface quality of the encapsulation layer, and thus improve the display effect of the display panel and enhance the user experience.

[0018] In one embodiment, the groove is disposed between the first pixel openings of adjacent rows, and the groove extends along the row direction.

[0019] In one embodiment, the groove is disposed between the openings of the first pixels in adjacent columns, and the groove extends along the column direction.

[0020] In one embodiment, in the row direction, the sum of the length of the first pixel opening and the distance between adjacent first pixel openings is equal to the sum of the length of the second pixel opening and the distance between adjacent second pixel openings; and / or,

[0021] In the column direction, the sum of the length of the first pixel opening and the distance between adjacent first pixel openings is equal to the sum of the length of the second pixel opening and the distance between adjacent second pixel openings.

[0022] This reduces the difficulty of manufacturing pixel units, and consequently reduces the difficulty and cost of manufacturing display panels.

[0023] In one embodiment, the display panel further includes:

[0024] Multiple pixel units are arrayed on the substrate, and the multiple pixel units are arranged in a one-to-one correspondence with the multiple pixel openings.

[0025] In one embodiment, the display panel further includes:

[0026] An organic encapsulation layer is disposed on the side of the pixel definition layer away from the substrate, and the encapsulation layer is formed by inkjet printing on the first display area and the second display area.

[0027] Preferably, the display panel further includes a first inorganic encapsulation layer, which is disposed between the organic encapsulation layer and the pixel definition layer.

[0028] In this way, during the process of inkjet printing to form the encapsulation layer, the flow rate of ink in the first display area is increased, the time required for ink to level in the first display area is shortened, the flatness of the encapsulation layer in the first display area is improved, and thus the display effect of the display panel is improved and the user experience is enhanced.

[0029] In a second aspect, this disclosure provides a display device, the display device comprising a display panel as described in the first aspect, or the display device comprising a display panel manufactured by the method for manufacturing a display panel as described in the second aspect.

[0030] The aforementioned display device, by increasing the area of ​​the pixel limiting portion of the first display area per unit area, increases the flow rate of the fluid in the first display area and shortens the leveling time of the fluid in the first display area, thereby improving the flatness of the encapsulation layer, enhancing the surface quality of the encapsulation layer, and thus improving the flatness of the display panel and enhancing the user experience. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments or conventional technologies of this disclosure, the accompanying drawings used in the description of the embodiments or conventional technologies will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 is a schematic diagram of a display panel provided in one embodiment.

[0033] Figure 2 is a cross-sectional view of a display panel provided in one embodiment.

[0034] Figure 3 is a partial enlarged view of area A in Figure 1 of a display panel according to an embodiment.

[0035] Figure 4 is a partial enlarged view of region AA in Figure 3 provided in an embodiment.

[0036] Figure 5 is a partial enlarged view of region B in Figure 4 provided in an embodiment.

[0037] Figure 6 is a partial enlarged view of area A in Figure 1 of a display panel of another embodiment.

[0038] Figure 7 is a partial enlarged view of area A in Figure 1 of a display panel of another embodiment.

[0039] Figure 8 is a partial enlarged view of region A in Figure 1 of a display panel according to another embodiment.

[0040] Figure 9 is a process flow diagram of a method for manufacturing a display panel according to an embodiment.

[0041] Explanation of reference numerals in the attached figures:

[0042] 100, Display panel; 10, Substrate; 10a, First frame; 200, Display area; 101, First display area; 102, Second display area; 11, Opening; 20, Pixel definition layer; 21, Pixel opening; 211, First pixel opening; 212, Second pixel opening; 22, Pixel limiting part; 30, Support post; 40, Pixel unit; 50, Encapsulation layer; 60, Groove. Detailed Implementation

[0043] To facilitate understanding of this disclosure, a more complete description will now be given with reference to the accompanying drawings, in which preferred embodiments of the present disclosure are shown. However, this disclosure may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that a thorough and complete understanding of the disclosure will be achieved.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0045] Furthermore, the accompanying drawings are not drawn to a 1:1 scale, and the relative dimensions of the components are shown in the drawings only as examples and not necessarily to actual scale.

[0046] As described in the background section, smart terminal products commonly use a long, narrow punch-hole design at the top of the display to house front-facing cameras, infrared sensors, and facial recognition (FACE ID) modules. This punch-hole is typically located near the top of the display, resulting in a narrow display area above it. During the encapsulation process, methods such as inkjet printing (IJP), PECVD, screen printing, or flash evaporation are commonly used to create the encapsulation layer. Inkjet printing uses low-viscosity ink, relying on natural ink leveling to form the encapsulation layer. Because the display area above the punch-hole is narrow, ink flow is difficult, leading to long leveling times and poor flatness, negatively impacting the user experience.

[0047] Based on the above reasons, this disclosure provides a display panel and a display device that, by increasing the area of ​​the pixel limiting portion of the first display area per unit area, increases the flow rate of the fluid in the first display area and shortens the leveling time of the fluid in the first display area, thereby improving the flatness of the encapsulation layer, enhancing the surface quality of the encapsulation layer, and thus improving the flatness of the display panel and enhancing the user experience.

[0048] In a first aspect, embodiments of this disclosure provide a display panel 100, which may include a flexible display panel with only display function, or a flexible display panel with touch function. The flexible display panel may, for example, be a flexible OLED (Organic Light-Emitting Diode) display panel, a flexible liquid crystal display (LCD) panel, or other types of flexible display panels.

[0049] Specifically, referring to Figures 1, 2, 3, 6, 7, and 8, the display panel 100 includes a substrate 10 and a pixel definition layer 20. The substrate 10 can be flexible polyimide (PI), rigid glass, or a thin metal sheet, etc. This embodiment will not discuss substrates 10 made of other materials in detail; those skilled in the art can select different types of materials according to actual needs. The substrate 10 has an opening 11 located near the first border 10a. This opening 11 can be a through-hole or a blind hole. It can be understood that a through-hole is a hole that penetrates the substrate 10, and the depth of the through-hole is equal to the thickness of the substrate 10; a blind hole is a hole that does not penetrate the substrate 10, and the depth of the blind hole is less than the thickness of the substrate 10.

[0050] The substrate 10 has a display area 200, which surrounds the opening 11. The display area 200 includes a first display area 101 disposed between the opening 11 and the first frame 10a, and a second display area 102 disposed outside the first display area 101. The opening 11 can be a circular hole, a square hole, an elongated hole, etc., and the opening 11 can be a regular hole or an irregular hole. In this embodiment, other shapes of openings 11 will not be discussed in detail. Those skilled in the art can select different shapes or sizes according to actual needs. The substrate 10 includes at least three borders, typically four. An opening 11 is disposed near a first border 10a, and the distance between the opening 11 and the first border 10a is less than the distance between the opening 11 and other borders. The width of the first display area 101 is less than the width of the second display area 102. A pixel definition layer 20 is disposed on one side of the substrate 10. The pixel definition layer 20 has an array of multiple pixel openings 21, with pixel defining portions 22 between each pixel opening 21, and adjacent pixel openings 21 are separated by the pixel defining portions 22. Specifically, in the row direction, the pixel openings 21 within the first display area 101 are all located between the two opposite sides of the opening 11 in the row direction.

[0051] The area of ​​the pixel limiting portion 22 of the first display area 101 per unit area is larger than the area of ​​the pixel limiting portion 22 of the second display area 102 per unit area.

[0052] The aforementioned display panel 100, by increasing the area of ​​the pixel limiting portion 22 of the first display area 101 per unit area, increases the flow rate of the fluid in the first display area 101 and shortens the leveling time of the fluid in the first display area 101, thereby improving the flatness of the encapsulation layer 50, enhancing the surface quality of the encapsulation layer 50, and thus improving the flatness of the display panel 100 and enhancing the user experience.

[0053] In one embodiment, referring to Figures 1, 2, 3, and 4, the display panel 100 further includes a plurality of support pillars 30, which are spaced apart from the pixel limiting portion 22. The density of the support pillars 30 in the first display area 101 is less than the density of the support pillars 30 in the second display area 102.

[0054] The support pillars 30 are used to adjust the flow rate of fluid in the display area 200. A dense arrangement of the support pillars 30 results in greater resistance to fluid leveling, a slower leveling rate, and a longer leveling time. Conversely, a sparse arrangement of the support pillars 30 results in less resistance to fluid leveling, a faster leveling rate, and a shorter leveling time. By reducing the density of the support pillars 30 in the first display area 101, the area of ​​the pixel-defining portion 22 in the first display area 101 is increased to a larger area per unit area. This reduces the resistance encountered by the fluid flowing in the first display area 101, thereby increasing the fluid flow rate in the first display area 101. This makes the fluid flow rates in the first display area 101 and the second display area 102 similar, improving the flatness of the encapsulation layer 50.

[0055] Preferably, the ratio of the arrangement density of the support pillars 30 in the first display area 101 to the arrangement density of the support pillars 30 in the second display area 102 is 1:2 to 1:5. For example, the ratio of the arrangement density of the support pillars 30 in the first display area 101 to the arrangement density of the support pillars 30 in the second display area 102 is 1:2, 1:2.2, 1:2.5, 1:2.7, 1:2.9, 1:3, 1:3.2, 1:3.5, 1:3.7, 1:3.9, 1:4, 1:4.2, 1:4.5, 1:4.7, 1:4.9, or 1:5.

[0056] In this way, by reasonably setting the density of the support columns 30 in the first display area 101 and the second display area 102, the flow rate of the fluid in the first display area 101 and the second display area 102 is made similar, the time required for the fluid to level in the first display area 101 and the second display area 102 is shortened, and the flatness of the encapsulation layer 50 is improved.

[0057] Preferably, the ratio of the density of the support pillars 30 in the first display area 101 to the density of the support pillars 30 in the second display area 102 is 1:4. This ensures that the fluid flows at the same rate in both the first and second display areas 101 and 102, and that the fluid takes the same time to level out in both areas. This results in higher flatness and better surface quality of the display panel 100, further enhancing the user experience.

[0058] In one embodiment, referring to Figures 1, 2, 6, 7, and 8, the pixel opening 21 includes a first pixel opening 211 disposed in the first display area 101 and a second pixel opening 212 disposed in the second display area 102. The area of ​​the first pixel opening 211 is smaller than the area of ​​the second pixel opening 212. Thus, the area of ​​the pixel limiting portion 22 between adjacent first pixel openings 211 is larger than the area of ​​the pixel limiting portion 22 between adjacent second pixel openings 212. In this way, by reducing the area of ​​the first pixel openings 211 in the first display area 101, the area of ​​the pixel limiting portion 22 in the first display area 101 of the same unit area is made larger, increasing the flow rate of fluid in the first display area 101 and improving the flatness of the encapsulation layer 50.

[0059] In one embodiment, referring to Figures 7 and 8, the pixel defining portion 22 of the first display area 101 is further provided with a strip-shaped groove 60. The groove 60 is disposed between the openings 211 of the first pixels in adjacent rows, or between the openings 211 of the first pixels in adjacent columns. The groove 60 has a guiding function, which can increase the flow rate of fluid in the first display area 101, so that the flow rate of fluid in the first display area 101 and the second display area 102 tends to be consistent.

[0060] In one example, referring to Figure 7, the groove 60 is disposed between the first pixel openings 211 of adjacent rows, and the groove 60 extends along the row direction. In another example, referring to Figure 8, the groove 60 is disposed between the first pixel openings 211 of adjacent columns, and the groove 60 extends along the column direction. In yet another example, the groove 60 is disposed between the first pixel openings 211 of adjacent columns, and also between the first pixel openings 211 of adjacent rows.

[0061] In this way, by reducing the size of the first pixel opening 211 of the first display area 101, the width of the pixel limiting portion 22 of the first display area 101 is increased. A groove 60 is added to the pixel limiting portion 22 of the first display area 101. The groove 60 guides the fluid to flow into the first display area 101, increases the flow rate of the fluid in the first display area 101, and shortens the leveling time of the fluid in the first display area 101. This can improve the flatness of the encapsulation layer 50, enhance the surface quality of the encapsulation layer 50, and thus improve the display effect of the display panel 100 and enhance the user experience.

[0062] In one embodiment, referring to Figures 4 and 5, in the row direction, the sum of the length of the first pixel opening 211 and the distance d1 between adjacent first pixel openings 211 is equal to the sum of the length of the second pixel opening 212 and the distance between adjacent second pixel openings 212; and / or, in the column direction, the sum of the length of the first pixel opening 211 and the distance between adjacent first pixel openings 211 is equal to the sum of the length of the second pixel opening 212 and the distance between adjacent second pixel openings 212.

[0063] In the row direction, the sum of the length of the first pixel opening 211 and the distance d2 between adjacent first pixel openings 211 is the dimension of the pixel unit 40 of the first display area 101 in the row direction. The sum of the length of the second pixel opening 212 and the distance between adjacent second pixel openings 212 is the dimension of the pixel unit 40 of the second display area 102 in the row direction.

[0064] In the column direction, the sum of the length of the first pixel opening 211 and the distance between adjacent first pixel openings 211 is the dimension of the pixel unit 40 of the first display area 101 in the column direction. The sum of the length of the second pixel opening 212 and the distance between adjacent second pixel openings 212 is the dimension of the pixel unit 40 of the second display area 102 in the column direction.

[0065] In this way, the pixel units 40 of the first display area 101 and the second display area 102 are the same size, which reduces the manufacturing difficulty of the pixel units 40 and reduces the manufacturing difficulty and cost of the display panel 100.

[0066] In one embodiment, referring to FIG2, the display panel 100 further includes a plurality of pixel units 40 arrayed on the substrate 10, and the plurality of pixel units 40 are arranged in a one-to-one correspondence with a plurality of pixel openings 21.

[0067] In one embodiment, referring to FIG2, the display panel 100 further includes an organic encapsulation layer 50, which is disposed on the side of the pixel definition layer 20 away from the substrate 10. The organic encapsulation layer 50 is formed by inkjet printing to level the first display area 101 and the second display area 102.

[0068] In this way, during the process of inkjet printing to form the organic encapsulation layer 50, the flow rate of ink in the first display area 101 is increased, the time required for ink to level in the first display area 101 is shortened, the flatness of the organic encapsulation layer 50 in the first display area 101 is improved, thereby enhancing the display effect of the display panel 100 and improving the user experience.

[0069] Preferably, the display panel 100 further includes a first inorganic encapsulation layer (not shown in the figure), which is disposed between the organic encapsulation layer 50 and the pixel definition layer 20.

[0070] Based on the same inventive concept, this disclosure provides a method for manufacturing a display panel. Referring to FIG9, the method for manufacturing a display panel includes:

[0071] Step S11: Provide a substrate 10. The substrate 10 has an opening 11 disposed near the first border 10a. The substrate 10 has a display area 200 surrounding the opening 11. The display area 200 includes a first display area 101 disposed between the opening 11 and the first border 10a, and a second display area 102 disposed outside the first display area 101.

[0072] The substrate 10 can be flexible polyimide (PI), rigid glass, or a thin metal sheet, etc. This application embodiment will not discuss other materials of the substrate 10 in detail; those skilled in the art can select different types of materials according to actual needs.

[0073] The opening 11 can be a circular hole, a square hole, an elongated hole, etc., and can be a regular hole or an irregular hole. This application embodiment will not discuss other shapes of openings 11 in detail here; those skilled in the art can select different shapes or sizes according to actual needs. The substrate 10 includes at least three borders, typically four. The opening 11 is disposed near the first border 10a, and the distance between the opening 11 and the first border 10a is less than the distance between the opening 11 and other borders. The width of the first display area 101 is less than the width of the second display area 102.

[0074] Step S12: A pixel definition layer 20 is formed on one side of the substrate 10. A plurality of pixel openings 21 in an array are formed in the pixel definition layer 20. Pixel limiting portions 22 are provided between the pixel openings 21, and adjacent pixel openings 21 are separated by the pixel limiting portions 22. The area of ​​the pixel limiting portion 22 per unit area of ​​the first display area 101 is larger than the area of ​​the pixel limiting portion 22 per unit area of ​​the second display area 102.

[0075] The above-described method for manufacturing a display panel increases the area of ​​the pixel limiting portion 22 of the first display area 101 per unit area, increases the flow rate of the fluid in the first display area 101, and shortens the leveling time of the fluid in the first display area 101. This improves the flatness of the organic encapsulation layer 50, enhances the surface quality of the organic encapsulation layer 50, and thus improves the flatness of the display panel 100 and enhances the user experience.

[0076] In one embodiment, step S12: After forming a pixel definition layer 20 on one side of the substrate 10, and after forming a plurality of pixel openings 21 of an array in the pixel definition layer 20, the fabrication method further includes:

[0077] Step S13: A plurality of support pillars 30 are formed at intervals in the pixel limiting portion 22, and the density of the support pillars 30 in the first display area 101 is less than the density of the support pillars 30 in the second display area 102.

[0078] In this way, by reducing the density of the support pillars 30 in the first display area 101, the area of ​​the pixel limiting portion 22 of the first display area 101 with the same unit area is made larger, reducing the obstruction encountered by the fluid in the first display area 101, thereby increasing the flow rate of the fluid in the first display area 101 and improving the flatness of the organic encapsulation layer 50.

[0079] Preferably, the ratio of the arrangement density of the support pillars 30 in the first display area 101 to the arrangement density of the support pillars 30 in the second display area 102 is 1:2-1:5; for example, the ratio of the arrangement density of the support pillars 30 in the first display area 101 to the arrangement density of the support pillars 30 in the second display area 102 is 1:2, 1:2.2, 1:2.5, 1:2.7, 1:2.9, 1:3, 1:3.2, 1:3.5, 1:3.7, 1:3.9, 1:4, 1:4.2, 1:4.5, 1:4.7, 1:4.9 or 1:5.

[0080] In this way, by reasonably setting the density of the support columns 30 in the first display area 101 and the second display area 102, the flow rate of the fluid in the first display area 101 and the second display area 102 is made similar, the time required for the fluid to level in the first display area 101 and the second display area 102 is shortened, and the flatness of the organic encapsulation layer 50 is improved.

[0081] Preferably, the ratio of the density of the support pillars 30 in the first display area 101 to the density of the support pillars 30 in the second display area 102 is 1:4. This ensures that the fluid flows at the same rate in both the first and second display areas 101 and 102, and that the fluid takes the same time to level out in both areas. This results in higher flatness and better surface quality of the display panel 100, further enhancing the user experience.

[0082] In one embodiment, step S12, which forms an array of pixel openings 21 in the pixel definition layer 20, includes:

[0083] Step S121: A first pixel opening 211 is formed in the first display area 101, and a second pixel opening 212 is formed in the second display area 102. The size of the first pixel opening 211 is smaller than the size of the second pixel opening 212, and the size of the pixel limiting portion 22 between adjacent first pixel openings 211 is larger than the size of the pixel limiting portion 22 between adjacent second pixel openings 212.

[0084] In this way, by reducing the size of the first pixel opening 211 of the first display area 101, the area of ​​the pixel limiting portion 22 of the first display area 101 of the same unit area is made larger, thereby increasing the flow rate of fluid in the first display area 101 and improving the flatness of the organic encapsulation layer 50.

[0085] Preferably, after forming the first pixel opening 211 in the first display area 101 and the second pixel opening 212 in the second display area 102 in step S121, the method further includes:

[0086] Step S122: A groove 60 is formed between the first pixel openings 211 of adjacent rows in the first display area 101, or a groove 60 is formed between the first pixel openings 211 of adjacent columns in the first display area 101.

[0087] In one example, the recess 60 is located between the first pixel openings 211 of adjacent rows. In another example, the recess 60 is located between the first pixel openings 211 of adjacent columns.

[0088] In this way, by reducing the size of the first pixel opening 211 of the first display area 101, the area of ​​the pixel limiting portion 22 of the first display area 101 is made larger for the same unit area, thereby increasing the flow rate of fluid in the first display area 101 and improving the flatness of the organic encapsulation layer 50. Furthermore, by reducing the size of the first pixel opening 211 of the first display area 101, the width of the pixel limiting portion 22 of the first display area 101 is increased. A groove 60 is added to the pixel limiting portion 22 of the first display area 101, which guides the fluid to flow into the first display area 101, increasing the flow rate of fluid in the first display area 101 and shortening the leveling time of fluid in the first display area 101. This can improve the flatness of the organic encapsulation layer 50, enhance the surface quality of the organic encapsulation layer 50, and thus improve the display effect of the display panel 100 and enhance the user experience.

[0089] In one embodiment, before forming the pixel definition layer 20, step S12 forms an array of multiple pixel units 40 on the substrate 10. The pixel definition layer 20 is formed on the multiple pixel units 40. The multiple pixel units 40 are configured to correspond one-to-one with multiple pixel openings 21, and each pixel opening 21 exposes its corresponding pixel unit 40.

[0090] Preferably, the pixel unit 40 located in the first display area 101 has the same size as the pixel unit 40 located in the second display area 102.

[0091] In this way, the pixel units 40 of the first display area 101 and the second display area 102 are the same size, which reduces the manufacturing difficulty of the pixel units 40 and reduces the manufacturing difficulty and cost of the display panel 100.

[0092] Preferably, after step S12, the preparation method further includes:

[0093] Step S15: An organic encapsulation layer 50 is formed on the side of the pixel definition layer 20 away from the substrate 10 by inkjet printing. The organic encapsulation layer 50 is leveled in the first display area 101 and the second display area 102.

[0094] In this way, the pixel units 40 of the first display area 101 and the second display area 102 are the same size, reducing the manufacturing difficulty of the pixel units 40 and reducing the manufacturing difficulty and cost of the display panel 100. During the inkjet printing process to form the organic encapsulation layer 50, the flow rate of ink in the first display area 101 is increased, the time required for ink to level in the first display area 101 is shortened, and the flatness of the organic encapsulation layer 50 in the first display area 101 is improved, thereby improving the display effect of the display panel 100 and enhancing the user experience.

[0095] Based on the descriptions of the above embodiments, more specific embodiments are described below in detail.

[0096] Example 1:

[0097] This embodiment provides a method for manufacturing a display panel, the method comprising:

[0098] S101: A substrate 10 is provided. The substrate 10 has an opening 11 disposed near the first border 10a. The substrate 10 has a display area 200 surrounding the opening 11. The display area 200 includes a first display area 101 disposed between the opening 11 and the first border 10a, and a second display area 102 disposed outside the first display area 101.

[0099] S102: A plurality of pixel units 40 arrayed on a substrate 10, and a pixel definition layer 20 formed on the plurality of pixel units 40;

[0100] S103: A pixel definition layer 20 is formed on the side of the plurality of pixel units 40 away from the substrate 10. A plurality of pixel openings 21 in an array are formed on the pixel definition layer 20. The plurality of pixel units 40 are arranged in a one-to-one correspondence with the plurality of pixel openings 21. Each pixel opening 21 exposes its corresponding pixel unit 40. A pixel limiting portion 22 is provided between the pixel openings 21. The area of ​​the pixel limiting portion 22 of the first display area 101 per unit area is greater than the area of ​​the pixel limiting portion 22 of the second display area 102 per unit area.

[0101] S104: A plurality of support pillars 30 are formed at intervals in the pixel limiting portion 22, and the arrangement density of the support pillars 30 in the first display area 101 is less than the arrangement density of the support pillars 30 in the second display area 102.

[0102] Preferably, the ratio of the density of the support columns 30 in the first display area 101 to the density of the support columns 30 in the second display area 102 is 1:2-1:5;

[0103] Preferably, the ratio of the density of the support columns 30 in the first display area 101 to the density of the support columns 30 in the second display area 102 is 1:4.

[0104] S105: An organic encapsulation layer 50 is formed on the side of the pixel definition layer 20 away from the substrate 10 by inkjet printing. The organic encapsulation layer 50 is leveled in the first display area 101 and the second display area 102.

[0105] The above-described method for manufacturing a display panel reduces the density of the support pillars 30 in the first display area 101, thereby increasing the area of ​​the pixel limiting portion 22 of the first display area 101 per unit area, reducing the obstruction encountered by the fluid in the first display area 101, and thus increasing the flow rate of the fluid in the first display area 101 and improving the flatness of the organic encapsulation layer 50.

[0106] Example 2:

[0107] This embodiment provides a method for manufacturing a display panel, the method comprising:

[0108] S201: A substrate 10 is provided. The substrate 10 has an opening 11 disposed near the first border 10a. The substrate 10 has a display area 200 surrounding the opening 11. The display area 200 includes a first display area 101 disposed between the opening 11 and the first border 10a, and a second display area 102 disposed outside the first display area 101.

[0109] S202: A plurality of pixel units 40 arrayed on the substrate 10, and a pixel definition layer 20 formed on the plurality of pixel units 40;

[0110] S203: A pixel definition layer 20 is formed on the side of the plurality of pixel units 40 away from the substrate 10. A plurality of pixel openings 21 in an array are formed on the pixel definition layer 20. The plurality of pixel units 40 are arranged in a one-to-one correspondence with the plurality of pixel openings 21. Each pixel opening 21 exposes its corresponding pixel unit 40. A pixel limiting portion 22 is provided between the pixel openings 21. The pixel opening 21 includes a first pixel opening 211 provided in the first display area 101 and a second pixel opening 212 provided in the second display area 102. The size of the pixel limiting portion 22 between adjacent first pixel openings 211 is larger than the size of the pixel limiting portion 22 between adjacent second pixel openings 212.

[0111] S204: A groove 60 is formed between the first pixel openings 211 of adjacent rows in the first display area 101, or a groove 60 is formed between the first pixel openings 211 of adjacent columns in the first display area 101.

[0112] S205: An organic encapsulation layer 50 is formed on the side of the pixel definition layer 20 away from the substrate 10 by inkjet printing. The organic encapsulation layer 50 is leveled in the first display area 101 and the second display area 102.

[0113] The above-described method for manufacturing a display panel reduces the size of the first pixel opening 211 in the first display area 101 and increases the distance between the first pixel openings 211 in adjacent rows or columns, thereby forming a groove 60 between the first pixel openings 211 in adjacent rows or columns. The groove 60 guides fluid to flow into the first display area 101, increasing the flow rate of the fluid in the first display area 101 and shortening the leveling time of the fluid in the first display area 101. This improves the flatness of the organic encapsulation layer 50, enhances the surface quality of the organic encapsulation layer 50, and thus improves the display effect of the display panel 100 and enhances the user experience.

[0114] Based on the same inventive concept, this disclosure provides a display device, which includes a display panel 100 as described in the first aspect, or a display panel 100 manufactured by the method for manufacturing a display panel as described in the second aspect.

[0115] It is understood that the display device in the embodiments of this disclosure can be any product or component with display function, such as OLED display device, QLED display device, electronic paper, mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, navigator, wearable device, Internet of Things device, etc., and the embodiments disclosed in this disclosure do not limit this.

[0116] The above-described display device increases the area of ​​the pixel limiting portion 22 of the first display area 101 per unit area, increases the flow rate of the fluid in the first display area 101, and shortens the leveling time of the fluid in the first display area 101. This improves the flatness of the encapsulation layer 50, enhances the surface quality of the encapsulation layer 50, and further improves the flatness of the display panel 100 and enhances the user experience.

[0117] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the appended claims.

Claims

1. A display panel, characterized in that, include: The substrate has an opening near a first border and a display area surrounding the opening. The display area includes a first display area between the opening and the first border, and a second display area outside the first display area. A pixel definition layer is disposed on one side of the substrate and has a plurality of pixel openings arranged in an array, with adjacent pixel openings separated by pixel defining portions. A plurality of support pillars are spaced apart from the pixel defining portions. The density of the support pillars in the first display area is less than the density of the support pillars in the second display area. The ratio of the density of the support pillars in the first display area to the density of the support pillars in the second display area is 1:2 to 1:

5.

2. The display panel according to claim 1, characterized in that, The ratio of the density of the support columns in the first display area to the density of the support columns in the second display area is 1:

4.

3. The display panel according to claim 1, characterized in that, The pixel opening includes a first pixel opening in the first display area and a second pixel opening in the second display area, wherein the area of ​​the first pixel opening is smaller than the area of ​​the second pixel opening.

4. The display panel according to claim 3, characterized in that, The pixel defining portion of the first display area is further provided with a strip-shaped groove, which is disposed between the openings of the first pixels in adjacent rows, or between the openings of the first pixels in adjacent columns.

5. The display panel according to claim 4, characterized in that, The distance between adjacent pixel openings in the first display area is greater than the distance between pixel openings in the second display area.

6. The display panel according to claim 4, characterized in that, The groove is located between the openings of the first pixel in adjacent rows, and the groove extends along the row direction.

7. The display panel according to claim 4, characterized in that, The groove is disposed between the openings of the first pixels in adjacent columns, and the groove extends along the column direction.

8. The display panel according to claim 4, characterized in that, In the row direction, the sum of the length of the first pixel opening and the distance between adjacent first pixel openings is equal to the sum of the length of the second pixel opening and the distance between adjacent second pixel openings; and / or, in the column direction, the sum of the length of the first pixel opening and the distance between adjacent first pixel openings is equal to the sum of the length of the second pixel opening and the distance between adjacent second pixel openings.

9. The display panel according to any one of claims 1-8, characterized in that, The display panel further includes: a plurality of pixel units arrayed on the substrate, wherein the plurality of pixel units are arranged in a one-to-one correspondence with the plurality of pixel openings.

10. The display panel according to any one of claims 1-8, characterized in that, The display panel further includes an organic encapsulation layer disposed on the side of the pixel definition layer away from the substrate, the encapsulation layer being formed by inkjet printing on the first display area and the second display area.

11. The display panel according to claim 10, characterized in that, The display panel further includes a first inorganic encapsulation layer, which is disposed between the organic encapsulation layer and the pixel definition layer.

12. A display device, characterized in that, The display device includes a display panel as claimed in any one of claims 1-11.

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