Display panel and manufacturing method thereof

Abstract

The invention discloses a display panel and a manufacturing method thereof, the display panel comprises a cover plate, a display substrate and a packaging adhesive layer, and a display area comprises a first area, a first buffer area and a second area which are connected in sequence; the packaging adhesive layer comprises a first sub-part, a second sub-part and a first buffer part, the first sub-part is located in the first area, the second sub-part is located in the second area, the first buffer part is located in the first buffer area, and the height from the side, away from the display substrate, of the first sub-part to the panel of the display substrate is a first height; the height from the side, away from the display substrate, of the second sub-part to the plate surface of the display substrate is a second height, the difference value between the first height and the second height is a first height difference, and the absolute value of the first height difference is larger than 0; a first included angle smaller than or equal to 2 degrees is formed between the face, away from the display substrate, of the first buffer part and the plate face of the display substrate. According to the invention, dark fringes at a gap between two adjacent regions in a display picture can be weakened, and the display effect is improved.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel and a manufacturing method thereof. Background Art

[0002] During the manufacturing process of an OLED display panel, droplets of frame glue and encapsulant form on the cover glass. The encapsulant droplets are evenly distributed on the cover, with the frame glue surrounding them. The cover glass is then pressed onto the display substrate. During the pressing process, the encapsulant droplets diffuse, filling the gap between the cover glass and the display substrate, forming an encapsulant layer.

[0003] To save production time, the production of the same display panel uses multiple nozzles to squeeze out droplets of encapsulant in different areas of the cover glass. However, there will be errors in the amount of dripping between different nozzles. When there is a difference in the amount of dripping of the nozzles in two adjacent areas of the cover glass, the thickness of the encapsulant layer corresponding to the area with more dripping is thicker, and the thickness of the encapsulant layer corresponding to the area with less dripping is thinner, making the slope angle of the upper surface of the gap between the two adjacent areas in the encapsulant layer steeper. When the light emitted by the display substrate passes through the gap, due to the large slope angle of the upper surface of the gap, part of the light will be reflected by the upper surface of the gap, causing dark lines to appear in the gap between the two adjacent areas of the display screen, affecting the display effect.

[0004] Therefore, it is necessary to propose a new technical solution to solve the above technical problems. Summary of the Invention

[0005] The purpose of the present application is to provide a display panel and a manufacturing method thereof, which can reduce the dark lines in the gap between two adjacent areas in the display image and improve the display effect.

[0006] To solve the above problems, the technical solutions of this application are as follows:

[0007] In a first aspect, the present application proposes a display panel, comprising:

[0008] cover;

[0009] A display substrate comprising a display area, wherein the display area comprises a first area, a first buffer area, and a second area connected in sequence; and

[0010] an encapsulation adhesive layer disposed between the display substrate and the cover plate, the encapsulation adhesive layer comprising a first sub-portion, a second sub-portion, and a first buffer portion connecting the first sub-portion and the second sub-portion, the first sub-portion being located in the first region, the second sub-portion being located in the second region, the first buffer portion being located in the first buffer region, a first height being a height from a side of the first sub-portion away from the display substrate to a surface of the display substrate, a second height being a height from a side of the second sub-portion away from the display substrate to a surface of the display substrate, a first height being a difference between the first height and the second height, and an absolute value of the first height difference being greater than 0;

[0011] Wherein, a surface of the first buffer portion away from the display substrate forms a first angle with the panel surface of the display substrate, and the first angle is less than or equal to 2 degrees.

[0012] In one embodiment of the present application, the first angle is less than or equal to 1 degree.

[0013] In one embodiment of the present application, the width of the first buffer portion is in a range of 5 mm to 80 mm, and the width direction of the first buffer portion is the arrangement direction of the first area and the second area.

[0014] In one embodiment of the present application, the absolute value of the first height difference is less than or equal to 4 micrometers.

[0015] In one embodiment of the present application, the first angle is in the range of 0.0001 degrees to 2 degrees.

[0016] In one embodiment of the present application, the display area further includes a third area and a second buffer area, the third area is located on a side of the second area away from the first area, and the second buffer area connects the third area and the second area;

[0017] The encapsulation glue layer further includes a third sub-portion and a second buffer portion, the second buffer portion connecting the third sub-portion and the second sub-portion, the third sub-portion being located in the third region, the second buffer portion being located in the second buffer region, a third height being a height from a side of the third sub-portion away from the display substrate to a surface of the display substrate, a second height difference being a difference between the third height and the second height, and an absolute value of the second height difference being less than or equal to an absolute value of the first height difference;

[0018] Wherein, a surface of the second buffer portion away from the display substrate forms a second angle with the panel surface of the display substrate, and the second angle is smaller than or equal to the first angle.

[0019] In one embodiment of the present application, a height from a portion of the cover plate located in the first area to the surface of the display substrate is a fourth height, a height from a portion of the cover plate located in the second area to the surface of the display substrate is a fifth height, a difference between the fourth height and the fifth height is a third height difference, and an absolute value of the third height difference is greater than 0;

[0020] A surface of the cover plate away from the display substrate forms a third angle with the plate surface of the display substrate, and the third angle is less than or equal to 2 degrees.

[0021] In a second aspect, the present application proposes a method for manufacturing a display panel, comprising the following steps:

[0022] Providing a display substrate, the display substrate comprising a display area, the display area comprising a first area, a first buffer area, and a second area connected in sequence;

[0023] forming a plurality of first filling droplets on a portion of the cover plate located in the first area and a portion located in the first buffer area, and forming a second filling droplet on a portion of the cover plate located in the second area and a portion located in the first buffer area, wherein the volume of the first filling droplet is a first volume, the volume of the second filling droplet is a second volume, the difference between the first volume and the second volume is a first volume difference, and the absolute value of the first volume difference is greater than 0;

[0024] The cover plate and the display substrate are pressed together, and the first filling droplet and the second filling droplet form an encapsulation glue layer. The encapsulation glue layer includes a first sub-portion, a second sub-portion, and a first buffer portion connecting the first sub-portion and the second sub-portion. The first sub-portion is located in the first area, the second sub-portion is located in the second area, the first buffer portion is located in the first buffer area, the height from the side of the first sub-portion away from the display substrate to the board surface of the display substrate is a first height, the height from the side of the second sub-portion away from the display substrate to the board surface of the display substrate is a second height, the difference between the first height and the second height is a first height difference, the absolute value of the first height difference is greater than 0, and the side of the first buffer portion away from the display substrate forms a first angle with the board surface of the display substrate, and the first angle is less than or equal to 2 degrees.

[0025] In one embodiment of the present application, the steps of forming a plurality of first filling droplets on a portion of the cover plate located in the first zone and a portion located in the first buffer zone, and forming a second filling droplet on a portion of the cover plate located in the second zone and a portion located in the first buffer zone include:

[0026] At least one first droplet column is formed in the first buffer zone, and at least one second droplet column is formed in the first buffer zone. The first droplet column includes a plurality of first filling droplets spaced apart along a first direction, and the second droplet column includes a plurality of second filling droplets spaced apart along the first direction. The first droplet column and the second droplet column are alternately arranged along a second direction. The first filling droplets in the first droplet column and the second filling droplets in the second droplet column are staggered in the first direction, and the first direction intersects with the second direction.

[0027] In one embodiment of the present application, the display area further includes a third area and a second buffer area, the third area is located on a side of the second area away from the first area, and the second buffer area connects the third area and the second area;

[0028] The step of forming a second filling droplet on the portion of the cover plate located in the second zone and the portion located in the first buffer zone comprises:

[0029] forming a second filling droplet on a portion of the cover plate located in the first buffer zone, a portion located in the second zone, and a portion located in the second buffer zone;

[0030] Before pressing the cover plate and the display substrate together, the method further includes the following steps:

[0031] forming a plurality of third filling droplets on a portion of the cover plate located in the third zone and a portion located in the second buffer zone, wherein the volume of the third filling droplets is a third volume, the difference between the third volume and the second volume is a second volume difference, and the absolute value of the second volume difference is greater than or equal to 0;

[0032] In the step of pressing the cover plate and the display substrate, after pressing, the first filling droplet, the second filling droplet, and the third filling droplet are filled between the display substrate and the cover plate to form the encapsulation glue layer, and the encapsulation glue layer also includes a third sub-portion and a second buffer portion connecting the second sub-portion and the third sub-portion, the third sub-portion is located in the third area, the second buffer portion is located in the second buffer area, the height from the side of the third sub-portion away from the display substrate to the board surface of the display substrate is a third height, the difference between the third height and the second height is a second height difference, the absolute value of the second height difference is less than or equal to the absolute value of the first height difference, and the side of the second buffer portion away from the display substrate forms a second angle with the board surface of the display substrate, and the second angle is less than or equal to the first angle.

[0033] In the present application, the encapsulation adhesive layer includes a first sub-section and a second sub-section that are adjacently arranged. The first sub-section and the second sub-section form a first height difference, and the absolute value of the first height difference is greater than 0. The present application sets a first buffer section between the first sub-section and the second sub-section, and sets the first angle formed by the side of the first buffer section away from the display substrate and the board surface of the display substrate to be less than or equal to 2 degrees. Compared with the structure in the related art in which the upper surface at the gap has a larger slope angle, the present application sets the first angle to be less than or equal to 2 degrees, which can reduce the reflection of the light emitted from the display substrate by the side of the first buffer section away from the display substrate, so that the intensity of the light emitted from the first buffer section is similar to the intensity of the light emitted from the first sub-section and the intensity of the light emitted from the second sub-section, which can reduce the dark lines in the gap between two adjacent areas in the display image and improve the display effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is a schematic diagram of a display panel in the related art;

[0035] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0036] Figure 3 is a schematic diagram of an embodiment of a display panel of the present application;

[0037] Figure 4 yes Figure 3 Enlarged view of point C in the middle;

[0038] Figure 5 yes Figure 3 Enlarged view of point E in the middle;

[0039] Figure 6 is a flow chart of a method for manufacturing a display panel of the present application;

[0040] Figure 7 yes Figure 6 FIG. 1 is a schematic diagram of step S20 in the flowchart of the method for manufacturing a display panel of the present application. DETAILED DESCRIPTION

[0041] The meanings of the terms used in this specification and claims correspond to those commonly understood by persons of ordinary skill in the art to which this application belongs. The terms used in this specification and claims are intended solely to facilitate the description and understanding of this application and are not intended to limit this application to the narrow interpretations of the specific terms used in the specification and claims.

[0042] In related art, during the manufacturing process of an organic light emitting diode (OLED) display panel 100', droplets of a border glue 40' and an encapsulating glue are formed on a cover glass (CG). The encapsulating glue droplets are evenly distributed on the cover glass, with the border glue 40' surrounding the encapsulating glue droplets. The cover glass is then pressed onto a display substrate 20'. During the pressing process, the encapsulating glue droplets diffuse, filling the gap between the cover glass and the display substrate 20', forming an encapsulating glue layer 30'.

[0043] In order to save production time, the production of the same display panel 100' will use multiple nozzles at the same time to extrude droplets of encapsulant in different areas of the cover plate. However, there will be errors in the dripping amount between different nozzles. Even if the nozzles are corrected and measured, the errors cannot be eliminated. This is because during the correction process, the instrument used for correction will have instrument errors. During the measurement process, readings will also produce reading errors. Due to the existence of instrument errors and reading errors, the dripping amount of different nozzles cannot be guaranteed to be absolutely the same. When the error value of the dripping amount exceeds 3%, the adjacent areas of the encapsulant layer 30' will cause a steeper step difference in the morphology. Among them, the dripping amount refers to the volume of each drop of liquid dripped, rather than the difference in the number of droplets dripped.

[0044] See also Figure 1 When there is a difference in the dripping amount of the nozzles in two adjacent areas of the cover plate, the thickness of the encapsulation adhesive layer 30' corresponding to the area B1 with a larger dripping amount is thicker, and the thickness of the encapsulation adhesive layer 30' corresponding to the area B2 with a smaller dripping amount is thinner. Figure 2 , resulting in a steeper slope angle of the upper surface of the gap B3 between two adjacent regions in the encapsulation adhesive layer 30'. When light emitted from the display substrate 20' passes through the gap B3, part of the light will be reflected by the upper surface of the gap B3 due to the larger slope angle of the upper surface of the gap B3. This causes dark lines to appear in the gap B3 between two adjacent regions in the display image, affecting the display effect.

[0045] See also Figure 3 The present application proposes a display panel 100 , including a cover plate 10 , a display substrate 20 and an encapsulation adhesive layer 30 .

[0046] The display substrate 20 includes a display area AA. The display area AA includes a first area AA1, a first buffer area D1, and a second area AA2 that are sequentially connected.

[0047] The encapsulation layer 30 is disposed between the display substrate 20 and the cover plate 10. The encapsulation layer 30 includes a first sub-portion 31, a second sub-portion 32, and a first buffer portion 33 connecting the first and second sub-portions 31 and 32. The first sub-portion 31 is located in the first area AA1. The second sub-portion 32 is located in the second area AA2. The first buffer portion 33 is located in the first buffer area D1.

[0048] The height from the side of the first sub-portion 31 away from the display substrate 20 to the surface of the display substrate 20 is a first height H1. The height from the side of the second sub-portion 32 away from the display substrate 20 to the surface of the display substrate 20 is a second height H2. The difference between the first height H1 and the second height H2 is a first height difference, and the absolute value of the first height difference is greater than 0.

[0049] See also Figure 4 , wherein a surface of the first buffer portion 33 away from the display substrate 20 forms a first angle X1 with the surface of the display substrate 20. The first angle X1 is less than or equal to 2 degrees.

[0050] In the present application, the encapsulating adhesive layer 30 includes a first sub-portion 31 and a second sub-portion 32 disposed adjacent to each other. A first height difference is formed between the first sub-portion 31 and the second sub-portion 32, and the absolute value of the first height difference is greater than 0. The present application provides a first buffer portion 33 between the first sub-portion 31 and the second sub-portion 32, and sets the first angle X1 formed between the surface of the first buffer portion 33 facing away from the display substrate 20 and the surface of the display substrate 20 to be less than or equal to 2 degrees. Compared to related art structures in which the upper surface of the gap B3 has a larger slope angle T, the present application sets the first angle X1 to be less than or equal to 2 degrees. This reduces the reflection of light emitted from the display substrate 20 by the side of the first buffer portion 33 facing away from the display substrate 20, thereby ensuring that the intensity of light emitted from the first buffer portion 33 is similar to that of the light emitted from the first sub-portion 31 and the second sub-portion 32. This reduces dark lines between adjacent areas of the display image and improves the display effect.

[0051] Optionally, the display panel 100 further includes a frame adhesive layer 40 . The frame adhesive layer 40 is located between the display substrate 20 and the cover plate 10 . The frame adhesive layer 40 is disposed around the periphery of the encapsulation adhesive layer 30 .

[0052] Optionally, the value of the first angle X1 can be 0.0001 degree, 0.0002 degree, 0.0003 degree, 0.0004 degree, 0.0005 degree, 0.0006 degree, 0.0007 degree, 0.0008 degree, 0.0009 degree, 0.0010 degree, 0.0011 degree, 0.0012 degree, 0.0013 degree, 0.00 14 degrees, 0.0015 degrees, 0.0016 degrees, 0.0017 degrees, 0.0018 degrees, 0.0019 degrees, 0.0020 degrees, 0.0021 degrees, 0.0022 degrees, 0.0023 degrees, 0.0024 degrees, 0.0025 degrees, 0.0026 degrees, 0.0027 degrees, 0.0028 degrees, 0.0029 degrees, 0 0.0030 degrees, 0.0031 degrees, 0.0032 degrees, 0.0033 degrees, 0.0034 degrees, 0.0035 degrees, 0.0036 degrees, 0.0037 degrees, 0.0038 degrees, 0.0039 degrees, 0.0040 degrees, 0.0041 degrees, 0.0042 degrees, 0.0043 degrees, 0.0044 degrees, 0.004 5 degrees, 0.0046 degrees, 0.0047 degrees, 0.0048 degrees, 0.0049 degrees, 0.0050 degrees, 0.0051 degrees, 0.0052 degrees, 0.0053 degrees, 0.0054 degrees, 0.0055 degrees, 0.0056 degrees, 0.0057 degrees, 0.0058 degrees, 0.0059 degrees, 0.0060 degrees, 0. 0.0061 degrees, 0.0062 degrees, 0.0063 degrees, 0.0064 degrees, 0.0065 degrees, 0.0066 degrees, 0.0067 degrees, 0.0068 degrees, 0.0069 degrees, 0.0070 degrees, 0.0071 degrees, 0.0072 degrees, 0.0073 degrees, 0.0074 degrees, 0.0075 degrees, 0.0076 degrees degrees, 0.0077 degrees, 0.0078 degrees, 0.0079 degrees, 0.0080 degrees, 0.0081 degrees, 0.0082 degrees, 0.0083 degrees, 0.0084 degrees, 0.0085 degrees, 0.0086 degrees, 0.0087 degrees, 0.0088 degrees, 0.0089 degrees, 0.0090 degrees, 0.0091 degrees, 0.0 0.092 degrees, 0.0093 degrees, 0.0094 degrees, 0.0095 degrees, 0.0096 degrees, 0.0097 degrees, 0.0098 degrees, 0.0099 degrees, 0.01 degrees, 0.02 degrees, 0.03 degrees, 0.04 degrees, 0.05 degrees, 0.06 degrees, 0.07 degrees, 0.08 degrees, 0.09 degrees, 0.10 degrees, 0.1 1 degree, 0.12 degrees, 0.13 degrees, 0.14 degrees, 0.15 degrees, 0.16 degrees, 0.17 degrees, 0.18 degrees, 0.19 degrees, 0.20 degrees, 0.21 degrees, 0.22 degrees, 0.23 degrees, 0.24 degrees, 0.25 degrees, 0.26 degrees, 0.27 degrees, 0.28 degrees, 0.29 degrees, 0.30 degrees, 0.31 degrees, 0.32 degrees, 0.33 degrees, 0.34 degrees, 0.35 degrees, 0.36 degrees, 0.37 degrees, 0.38 degrees, 0.39 degrees, 0.40 degrees, 0.41 degrees, 0.42 degrees, 0.43 degrees, 0.44 degrees, 0.45 degrees, 0.46 degrees, 0.47 degrees, 0.48 degrees, 0.49 degrees, 0.50 degrees, 0.51 degrees, 0.52 degrees, 0.53 degrees, 0.54 degrees, 0.55 degrees, 0.56 degrees, 0.57 degrees, 0.58 degrees, 0.59 degrees, 0.60 degrees, 0.61 degrees, 0.62 degrees, 0.63 degrees, 0.64 degrees, 0.65 degrees, 0.66 degrees, 0.67 degrees, 0.68 degrees, 0.69 degrees, 0.70 degrees, 0.71 degrees, 0.72 degrees, 0.73 degrees, 0.74 degrees, 0.75 degrees, 0.76 degrees, 0.77 degrees, 0.78 degrees, 0.79 degrees, 0.80 degrees, 0.81 degrees, 0.82 degrees, 0.83 degrees, 0.84 degrees, 0.85 degrees, 0.86 degrees, 0.87 degrees, 0.88 degrees, 0.89 degrees, 0.90 degrees, 0.91 degrees, 0.92 degrees, 0.93 degrees, 0.94 degrees, 0.95 degrees, 0.96 degrees, 0.97 degrees, 0.98 degrees, 0.99 degrees, 1.0 degrees, 1.1 degrees, 1.2 degrees, 1.3 degrees, 1.4 degrees, 1.5 degrees, 1.6 degrees, 1.7 degrees, 1.8 degrees, 1.9 degrees, 2 degrees, etc.

[0053] In this embodiment, as the first angle X1 decreases, the reflection effect of the side of the first buffer portion 33 away from the display substrate 20 on the light emitted from the display substrate 20 is also weakened, so that the intensity of the light emitted from the first buffer portion 33 is similar to the intensity of the light emitted from the adjacent first sub-portion 31 and the second sub-portion 32, which can reduce the dark lines in the gap between two adjacent areas in the display image and improve the display effect.

[0054] Optionally, the display substrate 20 includes a substrate and a light-emitting device layer, wherein the substrate is arranged opposite to the cover plate 10. The light-emitting device layer is provided on the side of the substrate close to the cover plate 10. Optionally, the light-emitting device layer can be formed by an organic light-emitting diode (OLED), the light-emitting device layer can also be formed by a quantum dot light-emitting diode (QLED), and the light-emitting device layer can also be formed by a micro light-emitting diode (Micro LED) or a sub-millimeter light-emitting diode (Mini LED). The light-emitting device layer is not limited here. In order to avoid redundancy, the subsequent embodiments are described by taking the light-emitting device layer consisting of an organic light-emitting diode as an example.

[0055] Optionally, the first angle X1 is less than or equal to 1 degree.

[0056] In this embodiment, by further reducing the first included angle X1 , the reflection effect of the light emitted from the display substrate 20 on the side of the first buffer portion 33 away from the display substrate 20 is weakened.

[0057] Optionally, a width F of the first buffer portion 33 is in a range of 5 mm to 80 mm, and a width direction Y of the first buffer portion 33 is an arrangement direction of the first area AA1 and the second area AA2 .

[0058] In this embodiment, by increasing the width F of the first buffer portion 33 , the first angle X1 can be reduced while the value of the first height difference remains unchanged.

[0059] In the related art, the width of the gap B3 between two adjacent areas is in the range of 0.007 mm to 0.02 mm. In the present application, the width F of the first buffer portion 33 located between the first sub-portion 31 and the second sub-portion 32 is in the range of 5 mm to 80 mm. That is, the width F of the first buffer portion 33 of the present application is at least 250 times the width of the gap B3 in the related art. By setting the width F of the first buffer portion 33 to be in the range of 5 mm to 80 mm, the angle of the first angle X1 is greatly reduced in the present application, which can reduce the reflection effect of the side of the first buffer portion 33 away from the display substrate 20 on the light emitted from the display substrate 20, thereby reducing the dark lines between the first sub-portion 31 and the second sub-portion 32 in the display image and improving the display effect.

[0060] Optionally, the width F of the first buffer portion 33 can be 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, 7.5 mm, 8 mm, 8.5 mm, 9 mm, 9.5 mm, 10 mm, 10.5 mm, 11 mm, 11.5 mm, 12 mm, 12.5 mm, 13 mm, 13.5 mm, 14 mm, 14.5 mm, 15 mm, 15.5 mm, 16 mm, 16.5 mm, 17 mm, 17.5 mm, 18 mm, 18.5 mm, 19 mm, 20 mm, 21 mm, 22 mm, 23 mm, 24 mm, 25 mm, 26 mm, 27 mm, 28 mm, 29 mm, 30 mm, 31 mm, 32 mm, 33 mm, 34 mm, 35 mm, 36 mm, 37 mm, 38 mm, 39 mm, 40 mm, 41 mm, 42 mm, 43 mm mm, 19 mm, 19.5 mm, 20 mm, 20.5 mm, 21 mm, 21.5 mm, 22 mm, 22.5 mm, 23 mm, 23.5 mm, 24 mm, 24.5 mm, 25 mm, 25.5 mm, 26 mm, 26.5 mm, 27 mm, 27.5 mm, 28 mm, 28.5 mm, 29 mm, 29.5 mm, 30 mm, 30.5 mm, 31 mm, 31.5 mm, 32 mm, 32.5 mm, 33 mm, 3 3.5mm, 34mm, 34.5mm, 35mm, 35.5mm, 36mm, 36.5mm, 37mm, 37.5mm, 38mm, 38.5mm, 39mm, 39.5mm, 40mm, 40.5mm, 41mm, 41.5mm, 42mm, 42.5mm, 43mm, 43.5mm, 44mm, 44.5mm, 45mm, 45.5mm, 46mm, 46.5mm, 47mm, 47.5mm, 48mm , 48.5 mm, 49 mm, 49.5 mm, 50 mm, 51 mm, 52 mm, 53 mm, 54 mm, 55 mm, 56 mm, 57 mm, 58 mm, 59 mm, 60 mm, 61 mm, 62 mm, 63 mm, 64 mm, 65 mm, 66 mm, 67 mm, 68 mm, 69 mm, 70 mm, 71 mm, 72 mm, 73 mm, 74 mm, 75 mm, 76 mm, 77 mm, 78 mm, 79 mm, 80 mm, etc. As the width F of the first buffer portion 33 increases, the first angle X1 can be reduced, thereby reducing the reflection effect of the light emitted from the display substrate 20 on the side of the first buffer portion 33 away from the display substrate 20.

[0061] Furthermore, since the angle of the first angle X1 is relatively small, the angle of the first angle X1 can be reduced to a large extent, thereby weakening the reflection effect of the side of the first buffer portion 33 away from the display substrate 20 on the light emitted from the display substrate 20, thereby weakening the dark lines between the first sub-portion 31 and the second sub-portion 32 in the display screen and improving the display effect.

[0062] Optionally, the absolute value of the first height difference is less than or equal to 4 microns.

[0063] In the present application, the reason for the first height difference is that during the manufacturing process of the display panel 100, the first nozzle is used to print droplets of the first sub-section 31 on the portion of the cover plate 10 corresponding to the first area AA1, and the second nozzle is used to print droplets of the second sub-section 32 on the portion of the cover plate 10 corresponding to the second area AA2. Due to the different dripping amounts of the first nozzle and the second nozzle, when the droplets are cured to form the encapsulation glue layer 30, a first height difference is formed between the first sub-section 31 and the second sub-section 32. Before the first nozzle and the second nozzle are printed, the first nozzle and the second nozzle are corrected and measured. After correction and measurement, the volume difference between the dripping amount of the first nozzle and the dripping amount of the second nozzle can be controlled within 4 microns, that is, the absolute value of the first height difference between the first sub-section 31 and the second sub-section 32 formed after curing can be controlled within a range of less than or equal to 4 microns.

[0064] In this embodiment, as the first height difference decreases, the first angle X1 can be reduced while the width F of the first buffer portion 33 remains unchanged.

[0065] In this embodiment, the volume of the droplet can be adjusted to reduce the volume of each droplet, thereby reducing the volume error between the first nozzle and the second nozzle. By controlling the absolute value of the first height difference to be less than or equal to 4 microns, the first angle X1 can be reduced, thereby reducing the reflection effect of the side of the first buffer portion 33 away from the display substrate 20 on the light emitted from the display substrate 20.

[0066] Optionally, the first height difference is in the range of 0.7 μm to 4 μm. The value of the first height difference can be 0.7 μm, 0.8 μm, 0.9 μm, 1.0 μm, 1.1 μm, 1.2 μm, 1.3 μm, 1.4 μm, 1.5 μm, 1.6 μm, 1.7 μm, 1.8 μm, 1.9 μm, 2.0 μm, 2.1 μm, 2.2 μm, 2.3 μm, 2.4 μm, 2.5 μm, 2.6 μm, 2.7 μm, 2.8 μm, 2.9 μm, 3.0 μm, 3.1 μm, 3.2 μm, 3.3 μm, 3.4 μm, 3.5 μm, 3.6 μm, 3.7 μm, 3.8 μm, 3.9 μm, 4 μm, etc. In this embodiment, when the first height difference is larger, the volume of a single droplet from the first nozzle and the second nozzle will be larger, which can improve production efficiency. When the first height difference is small, the error in the single dripping amount of the first nozzle and the second nozzle is small, and the first angle X1 formed is also small, which can better reduce the reflection effect of the side of the first buffer portion 33 away from the display substrate 20 on the light emitted from the display substrate 20, thereby reducing the dark lines between the first sub-portion 31 and the second sub-portion 32 in the display screen and improving the display effect.

[0067] On the other hand, the intensity of light emitted by the display substrate 20 will vary after passing through different parts of the encapsulation layer 30. This is because, after the light passes through the first sub-section 31 and the second sub-section 32, the intensity of the light passing through the thinner of the first sub-section 31 and the second sub-section 32 is higher, while the intensity of the light passing through the thicker of the first sub-section 31 and the second sub-section 32 is lower. Therefore, if the value of the first height difference formed between the first sub-section 31 and the second sub-section 32 is too large, the portion of the display corresponding to the first sub-section 31 and the second sub-section 32 will show a phenomenon of bright and dark images, affecting the display effect. Therefore, by limiting the first height difference to less than or equal to 4 microns, this phenomenon of bright and dark images can be reduced in this embodiment, making the brightness of the display uniform from the perspective of the naked eye and improving the display effect.

[0068] Optionally, the first angle X1 is greater than or equal to 0.0001 degrees.

[0069] In one embodiment, the width F of the first buffer portion 33 is 80 mm, and the first height difference is 0.7 μm. Through measurement and calculation, it can be found that the first angle X1 is 0.0005 degrees.

[0070] In one embodiment, the width F of the first buffer portion 33 is 80 mm, and the first height difference is 4 microns. Through measurement and calculation, it can be found that the first angle X1 is 0.0020 degrees.

[0071] In one embodiment, the width F of the first buffer portion 33 is 40 mm, and the first height difference is 0.7 μm. Through measurement and calculation, it can be found that the first angle X1 is 0.0010 degrees.

[0072] In one embodiment, the width F of the first buffer portion 33 is 40 mm, and the first height difference is 4 microns. Through measurement and calculation, it can be found that the first angle X1 is 0.0057 degrees.

[0073] In one embodiment, the width F of the first buffer portion 33 is 5 mm, and the first height difference is 0.7 μm. Through measurement and calculation, it can be found that the first angle X1 is 0.008 degrees.

[0074] In one embodiment, the width F of the first buffer portion 33 is 5 mm, and the first height difference is 4 μm. Through measurement and calculation, it can be found that the first angle X1 is 0.045 degrees.

[0075] Furthermore, the first angle X1 is within a range of 0.0001 to 2 degrees. Within this range, as the first angle X1 decreases, the reflection effect of the side of the first buffer portion 33 away from the display substrate 20 on the light emitted from the display substrate 20 can be further reduced, thereby reducing the dark lines between the first sub-portion 31 and the second sub-portion 32 in the display image and improving the display effect.

[0076] Furthermore, the first angle X1 is in the range of 0.0005 degrees to 0.045 degrees.

[0077] See also Figure 5 Optionally, the display area AA further includes a third area AA3 and a second buffer area D2. The third area AA3 is located on a side of the second area AA2 away from the first area AA1. The second buffer area D2 connects the third area AA3 and the second area AA2.

[0078] The encapsulation layer 30 also includes a third sub-portion 34 and a second buffer portion 35. The second buffer portion 35 connects the third sub-portion 34 and the second sub-portion 32. The third sub-portion 34 is located in the third area AA3. The second buffer portion 35 is located in the second buffer area D2. The height from the side of the third sub-portion 34 away from the display substrate 20 to the surface of the display substrate 20 is a third height H3. The difference between the third height H3 and the second height H2 is a second height difference. The absolute value of the second height difference is less than or equal to the absolute value of the first height difference.

[0079] A surface of the second buffer portion 35 away from the display substrate 20 forms a second angle X2 with the surface of the display substrate 20. The second angle X2 is smaller than or equal to the first angle X1.

[0080] In this embodiment, when the width F of the second buffer portion 35 is the same as the width F of the first buffer portion 33, the absolute value of the second height difference is less than or equal to the absolute value of the first height difference, thereby making the second angle X2 less than or equal to the first angle X1. Because the second angle X2 is less than the first angle X1, the side of the second buffer portion 35 facing away from the display substrate 20 further reduces the reflection effect on light emitted from the display substrate 20 compared to the first buffer portion 33, thereby further reducing the dark streaks between the second sub-portion 32 and the third sub-portion 34 in the display image, thereby improving the display quality.

[0081] Optionally, the thickness of the cover plate 10 is in the range of 0.1 mm to 2 mm. The thickness of the cover plate 10 can be 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1.0 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, 2.0 mm, etc.

[0082] In this embodiment, the cover plate 10 may be made of glass. Since the cover plate 10 is relatively thin, it can be attached to the surface of the packaging adhesive layer 30 away from the display substrate 20 .

[0083] Optionally, the height from the portion of the cover plate 10 located in the first area AA1 to the surface of the display substrate 20 is a fourth height H4. The height from the portion of the cover plate 10 located in the second area AA2 to the surface of the display substrate 20 is a fifth height H5. The difference between the fourth height H4 and the fifth height H5 is a third height difference. The absolute value of the third height difference is greater than 0.

[0084] A surface of the cover plate 10 away from the display substrate 20 forms a third angle with the surface of the display substrate 20. The third angle is less than or equal to 2 degrees.

[0085] In this embodiment, since the cover plate 10 is relatively thin, it can be attached to the surface of the encapsulation layer 30 away from the display substrate 20. Therefore, the morphology of different parts of the cover plate 10 is related to the morphology of the encapsulation layer 30 thereunder.

[0086] See also Figure 6 , the present application also proposes a method for manufacturing a display panel 100, comprising the following steps:

[0087] Step S10 : providing a display substrate 20 , wherein the display substrate 20 includes a display area AA, and the display area AA includes a first area AA1 , a first buffer area D1 , and a second area AA2 connected in sequence.

[0088] In step S10, the display substrate 20 includes a substrate and a light-emitting device layer. The light-emitting device layer is disposed on one side of the substrate. When the substrate is a rigid substrate, the substrate material is glass. When the substrate is a flexible substrate, the substrate material is polyimide. The area of ​​the substrate where the light-emitting device layer is disposed is the display area AA.

[0089] See also Figure 7 Step S20: forming a plurality of first filling droplets P1 on the portion of the cover plate 10 located in the first area AA1 and the portion located in the first buffer zone D1, and forming a second filling droplet P2 on the portion of the cover plate 10 located in the second area AA2 and the portion located in the first buffer zone D1, wherein the volume of the first filling droplet P1 is a first volume, the volume of the second filling droplet P2 is a second volume, the difference between the first volume and the second volume is a first volume difference, and the absolute value of the first volume difference is greater than 0.

[0090] In step S20 , the number of first filling droplets P1 per unit area of ​​the portion of the cover plate 10 located in the first area AA1 is equal to the number of second filling droplets P2 per unit area of ​​the portion of the cover plate 10 located in the second area AA2 .

[0091] Before forming the first and second filling droplets P1, P2 on the cover plate 10, the first and second nozzles must be calibrated and metered. Taking the calibration and metering method for the first nozzle as an example, the specific calibration and metering method is as follows: 50 drops of filling liquid are added to a beaker, and the weight is measured using a high-precision balance. The average weight is then compared with the set single filling droplet. If the comparison result is too large, the droplet amount of the first nozzle is corrected in the negative direction. If the comparison result is too small, the droplet amount of the first nozzle is corrected in the positive direction.

[0092] However, there will be errors in the dripping amount between different nozzles. Even if the nozzles are corrected and measured, the errors cannot be eliminated. This is because during the correction process, the instrument used for correction will have instrument errors. During the measurement process, the readings will also have reading errors. Due to the existence of instrument errors and reading errors, the dripping amounts of different nozzles cannot be guaranteed to be absolutely the same. When the error value of the dripping amount of the first nozzle and the second nozzle exceeds 3%, it will cause a steeper step difference in the adjacent areas of the encapsulation glue layer 30. The dripping amount refers to the volume of each drop of filling droplet dripped, rather than the difference in the number of filling droplets dripped. In the subsequent process, the first nozzle drips the first filling droplet P1, and the volume of the first filling droplet P1 is the first volume. The second nozzle drips the second filling droplet P2, and the volume of the second filling droplet P2 is the second volume. The difference between the first volume and the second volume is the first volume difference, and the absolute value of the first volume difference is greater than 0.

[0093] After calibrating and metering the first and second nozzles, the first nozzle forms multiple first filling droplets P1 on the portion of the cover plate 10 located in the first area AA1 and the first buffer zone D1. The second nozzle forms second filling droplets P2 on the portion of the cover plate 10 located in the second area AA2 and the first buffer zone D1. In this step, the first nozzle prints the first area AA1 and the first buffer zone D1, while the second nozzle prints the second area AA2 and the first buffer zone D1. There is an overlap between the first and second nozzle printing areas, which constitutes the first buffer zone D1. The first and second nozzles can print simultaneously or at different times. Simultaneous printing improves production efficiency.

[0094] Step S30: Pressing the cover plate 10 and the display substrate 20 together, the first filling droplet P1 and the second filling droplet P2 form an encapsulation adhesive layer 30, the encapsulation adhesive layer 30 includes a first sub-portion 31, a second sub-portion 32, and a first buffer portion 33 connecting the first sub-portion 31 and the second sub-portion 32, the first sub-portion 31 is located in the first area AA1, the second sub-portion 32 is located in the second area AA2, the first buffer portion 33 is located in the first buffer zone D1, the height from the side of the first sub-portion 31 away from the display substrate 20 to the board surface of the display substrate 20 is a first height H1, the height from the side of the second sub-portion 32 away from the display substrate 20 to the board surface of the display substrate 20 is a second height H2, the difference between the first height H1 and the second height H2 is a first height difference, the absolute value of the first height difference is greater than 0, and the side of the first buffer portion 33 away from the display substrate 20 forms a first angle X1 with the board surface of the display substrate 20, and the first angle X1 is less than or equal to 2 degrees.

[0095] In step S30, because the number of first filling droplets P1 per unit area on the portion of the cover plate 10 located in the first area AA1 is equal to the number of second filling droplets P2 per unit area on the portion of the cover plate 10 located in the second area AA2, and a first volume difference exists between the first filling droplets P1 and the second filling droplets P2, after the encapsulation adhesive layer 30 is formed, a first height difference exists between the corresponding first sub-portion 31 and the second sub-portion 32. The first buffer portion 33 is located between the first sub-portion 31 and the second sub-portion 32. The surface of the first buffer portion 33 facing away from the display substrate 20 forms a first angle X1 with the surface of the display substrate 20, and the first angle X1 is less than or equal to 2 degrees. This small first angle X1 reduces the reflection effect of the surface of the first buffer portion 33 facing away from the display substrate 20 on light emitted from the display substrate 20, thereby reducing dark lines between the first sub-portion 31 and the second sub-portion 32 in the displayed image and improving the display quality.

[0096] Optionally, the steps of forming a plurality of first filling droplets P1 on a portion of the cover plate 10 located in the first area AA1 and a portion located in the first buffer area D1, and forming a second filling droplet P2 on a portion of the cover plate 10 located in the second area AA2 and a portion located in the first buffer area D1 include:

[0097] At least one first droplet column J1 is formed in the first buffer zone D1, and at least one second droplet column J2 is formed in the first buffer zone D1. The first droplet column J1 includes a plurality of first filling droplets P1 spaced apart along the first direction Z1, and the second droplet column J2 includes a plurality of second filling droplets P2 spaced apart along the first direction Z1. The first droplet column J1 and the second droplet column J2 are alternately arranged along the second direction Z2. The first filling droplets P1 of the first droplet column J1 and the second filling droplets P2 of the second droplet column J2 are alternately arranged in the first direction Z1, and the first direction Z1 intersects with the second direction Z2.

[0098] In this embodiment, at least one first droplet column J1 is formed in the first buffer zone D1 by a first nozzle, and at least one second droplet column J2 is formed in the first buffer zone D1 by a second nozzle. The staggered arrangement of the first and second droplet columns J1 and J2 allows the first filling droplets P1 in the odd-numbered columns and the second filling droplets P2 in the even-numbered columns to be vertically staggered. During the lamination process, this facilitates rapid diffusion of the first and second filling droplets P1 and P2 in the first buffer zone D1, thereby forming a flat surface on the side of the first buffer portion 33 facing away from the display substrate 20. This reduces the reflection effect of the side of the first buffer portion 33 facing away from the display substrate 20 on light emitted from the display substrate 20, thereby reducing the dark lines between the first sub-portion 31 and the second sub-portion 32 in the displayed image and improving the display quality.

[0099] Optionally, the step of forming a plurality of first filling droplets P1 in the first area AA1 of the cover plate 10 includes:

[0100] A plurality of third droplet columns and a fourth droplet column are formed in the first area AA1 through the first nozzle, the third droplet column includes a plurality of first filling droplets P1 spaced apart along the first direction Z1, the fourth droplet column includes a plurality of first filling droplets P1 spaced apart along the first direction Z1, the third droplet column and the fourth droplet column are alternately arranged along the second direction Z2, the second direction Z2 intersects with the first direction Z1, and the first filling droplets P1 of the first droplet column J1 and the first filling droplets P1 of the second droplet column J2 are staggered in the first direction Z1.

[0101] In this embodiment, the staggered arrangement of the third and fourth droplet columns allows the first filling droplets P1 in the odd-numbered columns to be vertically staggered with the first filling droplets P1 in the even-numbered columns. This facilitates rapid diffusion of the first filling droplets P1 within the first area AA1 during the lamination process, thereby forming a flat surface on the side of the first sub-section 31 facing away from the display substrate 20. This reduces the reflection effect of the side of the first sub-section 31 facing away from the display substrate 20 on the light emitted from the display substrate 20, thereby reducing the likelihood of dark lines appearing in the first sub-section 31 in the displayed image and improving the display quality.

[0102] Optionally, the step of forming a second filling droplet P2 in the second area AA2 of the cover plate 10 includes:

[0103] A plurality of fifth and sixth droplet columns are formed in the second area AA2 through the first nozzle, the fifth droplet column includes a plurality of second filling droplets P2 spaced apart along the first direction Z1, the sixth droplet column includes a plurality of second filling droplets P2 spaced apart along the first direction Z1, the fifth droplet column and the sixth droplet column are alternately arranged along the second direction Z2, and the second filling droplets P2 of the fifth droplet column and the second filling droplets P2 of the sixth droplet column are staggered in the first direction Z1.

[0104] In this embodiment, the staggered arrangement of the fifth and sixth droplet columns allows the second filling droplets P2 in the odd-numbered columns to be vertically staggered with the second filling droplets P2 in the even-numbered columns. This facilitates rapid diffusion of the second filling droplets P2 within the second area AA2 during the lamination process, thereby forming a flat surface on the side of the second sub-section 32 facing away from the display substrate 20. This reduces the reflection effect of the side of the second sub-section 32 facing away from the display substrate 20 on light emitted from the display substrate 20, thereby reducing the likelihood of dark lines appearing in the second sub-section 32 on the displayed image and improving the display quality.

[0105] Optionally, the display area AA further includes a third area AA3 and a second buffer area D2 , the third area AA3 is located on a side of the second area AA2 away from the first area AA1 , and the second buffer area D2 connects the third area AA3 and the second area AA2 .

[0106] Optionally, the step of forming a second filling droplet on the portion of the cover plate located in the second zone and the portion located in the first buffer zone includes:

[0107] A second filling droplet is formed on a portion of the cover plate located in the first buffer zone, a portion located in the second zone, and a portion located in the second buffer zone.

[0108] Before pressing the cover plate 10 and the display substrate 20 together, the following steps are also included:

[0109] A plurality of third filling droplets P3 are formed on the portion of the cover plate 10 located in the third area AA3 and on the portion located in the second buffer zone. The volume of the third filling droplet P3 is a third volume. The difference between the third volume and the second volume is a second volume difference. The absolute value of the second volume difference is greater than or equal to 0.

[0110] In the step of laminating the cover plate 10 and the display substrate 20, after lamination, the first filling droplet P1, the second filling droplet P2, and the third filling droplet P3 are filled between the display substrate 20 and the cover plate 10 to form an encapsulation adhesive layer 30. The encapsulation adhesive layer 30 also includes a third sub-portion 34 and a second buffer portion 35 connecting the second sub-portion 32 and the third sub-portion 34. The third sub-portion 34 is located in the third area AA3, and the second buffer portion 35 is located in the second buffer portion D2. The height from the side of the third sub-portion 34 away from the display substrate 20 to the board surface of the display substrate 20 is a third height H3. The difference between the third height H3 and the second height H2 is a second height difference. The absolute value of the second height difference is less than or equal to the absolute value of the first height difference. The side of the second buffer portion 35 away from the display substrate 20 forms a second angle X2 with the board surface of the display substrate 20. The second angle X2 is less than or equal to the first angle X1.

[0111] In this embodiment, when the width F of the second buffer portion 35 is the same as the width F of the first buffer portion 33, the absolute value of the second height difference is less than or equal to the absolute value of the first height difference, thereby making the second angle X2 less than or equal to the first angle X1. Because the second angle X2 is less than the first angle X1, the side of the second buffer portion 35 facing away from the display substrate 20 further reduces the reflection effect on light emitted from the display substrate 20 compared to the first buffer portion 33, thereby further reducing the dark streaks between the second sub-portion 32 and the third sub-portion 34 in the display image, thereby improving the display quality.

[0112] The above describes in detail the specific embodiments of the present application. The above embodiments disclosed in this application are merely preferred embodiments of the present application. Those skilled in the art will appreciate that many variations and improvements can be made without departing from the spirit of the present application. These variations and improvements fall within the scope of protection defined by the claims of this application.

Claims

1. A display panel, characterized in that: include: cover; The display substrate includes a display area, wherein the display area includes a first area, a first buffer area, and a second area connected in sequence; as well as an encapsulation adhesive layer disposed between the display substrate and the cover plate, the encapsulation adhesive layer comprising a first sub-portion, a second sub-portion, and a first buffer portion connecting the first sub-portion and the second sub-portion, the first sub-portion being located in the first region, the second sub-portion being located in the second region, the first buffer portion being located in the first buffer region, a first height being a height from a side of the first sub-portion away from the display substrate to a surface of the display substrate, a second height being a height from a side of the second sub-portion away from the display substrate to a surface of the display substrate, a first height being a difference between the first height and the second height, and an absolute value of the first height difference being greater than 0; Wherein, a surface of the first buffer portion away from the display substrate forms a first angle with the panel surface of the display substrate, and the first angle is less than or equal to 2 degrees.

2. The display panel according to claim 1, wherein The first angle is less than or equal to 1 degree.

3. The display panel according to claim 2, wherein: The width of the first buffer portion is in a range of 5 mm to 80 mm, and the width direction of the first buffer portion is an arrangement direction of the first area and the second area.

4. The display panel according to claim 3, wherein: An absolute value of the first height difference is less than or equal to 4 micrometers.

5. The display panel according to claim 1, wherein: The first angle is in the range of 0.0001 degrees to 2 degrees.

6. The display panel according to any one of claims 1 to 5, wherein: The display area further includes a third area and a second buffer area, the third area is located on a side of the second area away from the first area, and the second buffer area connects the third area and the second area; The encapsulation glue layer further includes a third sub-portion and a second buffer portion, the second buffer portion connecting the third sub-portion and the second sub-portion, the third sub-portion being located in the third region, the second buffer portion being located in the second buffer region, a third height being a height from a side of the third sub-portion away from the display substrate to a surface of the display substrate, a second height difference being a difference between the third height and the second height, and an absolute value of the second height difference being less than or equal to an absolute value of the first height difference; Wherein, a surface of the second buffer portion away from the display substrate forms a second angle with the panel surface of the display substrate, and the second angle is smaller than or equal to the first angle.

7. The display panel according to any one of claims 1 to 5, wherein: A height from a portion of the cover plate located in the first area to the surface of the display substrate is a fourth height, a height from a portion of the cover plate located in the second area to the surface of the display substrate is a fifth height, a difference between the fourth height and the fifth height is a third height difference, and an absolute value of the third height difference is greater than 0; A surface of the cover plate away from the display substrate forms a third angle with the plate surface of the display substrate, and the third angle is less than or equal to 2 degrees.

8. A method for manufacturing a display panel, characterized in that: The following steps are involved: Providing a display substrate, the display substrate comprising a display area, the display area comprising a first area, a first buffer area, and a second area connected in sequence; forming a plurality of first filling droplets on a portion of the cover plate located in the first area and a portion located in the first buffer area, and forming a second filling droplet on a portion of the cover plate located in the second area and a portion located in the first buffer area, wherein the volume of the first filling droplet is a first volume, the volume of the second filling droplet is a second volume, the difference between the first volume and the second volume is a first volume difference, and the absolute value of the first volume difference is greater than 0; The cover plate and the display substrate are pressed together, and the first filling droplet and the second filling droplet form an encapsulation glue layer. The encapsulation glue layer includes a first sub-portion, a second sub-portion, and a first buffer portion connecting the first sub-portion and the second sub-portion. The first sub-portion is located in the first area, the second sub-portion is located in the second area, the first buffer portion is located in the first buffer area, the height from the side of the first sub-portion away from the display substrate to the board surface of the display substrate is a first height, the height from the side of the second sub-portion away from the display substrate to the board surface of the display substrate is a second height, the difference between the first height and the second height is a first height difference, the absolute value of the first height difference is greater than 0, and the side of the first buffer portion away from the display substrate forms a first angle with the board surface of the display substrate, and the first angle is less than or equal to 2 degrees.

9. The method for manufacturing a display panel according to claim 8, wherein: The steps of forming a plurality of first filling droplets on a portion of the cover plate located in the first zone and a portion located in the first buffer zone, and forming a second filling droplet on a portion of the cover plate located in the second zone and a portion located in the first buffer zone include: At least one first droplet column is formed in the first buffer zone, and at least one second droplet column is formed in the first buffer zone. The first droplet column includes a plurality of first filling droplets spaced apart along a first direction, and the second droplet column includes a plurality of second filling droplets spaced apart along the first direction. The first droplet column and the second droplet column are alternately arranged along a second direction. The first filling droplets in the first droplet column and the second filling droplets in the second droplet column are staggered in the first direction, and the first direction intersects with the second direction.

10. The method for manufacturing a display panel according to any one of claims 8 to 9, wherein: The display area further includes a third area and a second buffer area, the third area is located on a side of the second area away from the first area, and the second buffer area connects the third area and the second area; The step of forming a second filling droplet on the portion of the cover plate located in the second zone and the portion located in the first buffer zone comprises: forming a second filling droplet on a portion of the cover plate located in the first buffer zone, a portion located in the second zone, and a portion located in the second buffer zone; Before pressing the cover plate and the display substrate together, the method further includes the following steps: forming a plurality of third filling droplets on a portion of the cover plate located in the third zone and a portion located in the second buffer zone, wherein the volume of the third filling droplets is a third volume, the difference between the third volume and the second volume is a second volume difference, and the absolute value of the second volume difference is greater than or equal to 0; In the step of pressing the cover plate and the display substrate, after pressing, the first filling droplet, the second filling droplet, and the third filling droplet are filled between the display substrate and the cover plate to form the encapsulation glue layer, and the encapsulation glue layer also includes a third sub-portion and a second buffer portion connecting the second sub-portion and the third sub-portion, the third sub-portion is located in the third area, the second buffer portion is located in the second buffer area, the height from the side of the third sub-portion away from the display substrate to the board surface of the display substrate is a third height, the difference between the third height and the second height is a second height difference, the absolute value of the second height difference is less than or equal to the absolute value of the first height difference, and the side of the second buffer portion away from the display substrate forms a second angle with the board surface of the display substrate, and the second angle is less than or equal to the first angle.

Images