Display panel and method for manufacturing the same

Abstract

An embodiment of the present application discloses a display panel and a manufacturing method thereof. The display panel includes a display area and a non-display area located on one side of the display area. The display panel includes a first substrate, a driving circuit layer disposed on one side of the first substrate, a light-emitting device layer disposed on the side of the driving circuit layer away from the first substrate, a second substrate disposed on the side of the light-emitting device layer away from the driving circuit layer, and a stress release layer disposed on the side of the second substrate close to the light-emitting device layer. The stress release layer is disposed corresponding to the non-display area, and the stress release layer is provided with a recessed portion. When the display panel is bent, the recessed portion can play a role in releasing stress, avoid the film layer in the non-display area from breaking when the bending radius is small, improve the reliability of the display panel, and reduce the risk of display panel failure.

Description

Technical Field

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

[0002] OLED (Organic Light-Emitting Diode), also known as organic electroluminescent display and organic light-emitting semiconductor. Compared with the traditional liquid crystal display (LCD), the OLED display has excellent characteristics such as no need for a backlight source, low driving voltage, light weight and thinness, wide viewing angle, high contrast ratio, fast response rate, and bendability, and is widely used in display fields such as mobile phones, digital video cameras, DVD players, laptop computers, and televisions.

[0003] For a bendable display panel, in order to adjust the neutral plane of the non-display area of the display panel, the color filter layer is extended to the non-display area. However, when the non-display area of the display panel is bent multiple times, the color filter layer in the non-display area is prone to breakage, resulting in water vapor and oxygen entering the display area from the breakage, affecting the display effect of the display panel, reducing the reliability of the display panel, and restricting the development of flexible display technology. Summary of the Invention

[0004] Embodiments of the present application provide a display panel and a manufacturing method thereof, which can solve the technical problem that the film layer in the non-display area of the display panel is prone to breakage after being bent multiple times.

[0005] Embodiments of the present application provide a display panel, including a display area and a non-display area located on one side of the display area. The display panel includes:

[0006] A first substrate;

[0007] A driving circuit layer disposed on one side of the first substrate;

[0008] A light-emitting device layer disposed on the side of the driving circuit layer away from the first substrate;

[0009] A second substrate disposed opposite to the first substrate, with the driving circuit layer and the light-emitting device layer located between the first substrate and the second substrate; and

[0010] A stress release layer disposed on the side of the second substrate close to the first substrate, the stress release layer corresponding to the non-display area, and the stress release layer being provided with a recess.

[0011] Optionally, in some embodiments of the present application, the stress release layer includes a plurality of color resistance blocks arranged at intervals;

[0012] The recessed portion includes a plurality of first grooves extending in a first direction, and the plurality of first grooves are arranged in a second direction, where the first direction intersects the second direction;

[0013] A first groove is provided between two adjacent color resistance blocks arranged in the second direction.

[0014] Optionally, in some embodiments of the present application, the recessed portion further includes a plurality of second grooves extending in the second direction, and the plurality of second grooves are arranged in the first direction, and the first grooves and the second grooves are communicated;

[0015] A second groove is provided between two adjacent color resistance blocks arranged in the first direction.

[0016] Optionally, in some embodiments of the present application, the recessed portion further includes a via hole provided in the color resistance block.

[0017] Optionally, in some embodiments of the present application, the cross-sectional shape of the via hole is circular, elliptical or polygonal.

[0018] Optionally, in some embodiments of the present application, the color resistance block is selected from one or at least two stacked structures of a red color resistance, a green color resistance, and a blue color resistance.

[0019] Optionally, in some embodiments of the present application, the heights of two adjacent color resistance blocks are different.

[0020] Optionally, in some embodiments of the present application, the display panel further includes a packaging layer covering the light-emitting device layer, and the thickness of the non-display area of the first substrate is less than the thickness of the display area of the first substrate.

[0021] Optionally, in some embodiments of the present application, the driving circuit layer includes an active layer, a gate insulating layer provided on a side of the active layer away from the first substrate, a gate layer provided on a side of the gate insulating layer away from the active layer, a first insulating layer covering the gate and the active layer, and a source-drain metal layer provided on the first insulating layer;

[0022] The thickness of the portion of the first insulating layer corresponding to the non-display area is less than the thickness of the portion of the first insulating layer corresponding to the display area.

[0023] An embodiment of the present application further provides a method for manufacturing a display panel. The display panel includes a display area and a non-display area located on one side of the display area. The method for manufacturing the display panel includes the following steps:

[0024] A driving circuit layer and a light-emitting device layer are formed on a first substrate. The driving circuit layer is disposed on one side of the first substrate, and the light-emitting device layer is disposed on a side of the driving circuit layer away from the first substrate.

[0025] A stress release layer is formed on a second substrate. The stress release layer is disposed corresponding to the non-display area, and the stress release layer is provided with a recessed portion.

[0026] The second substrate is fixed to one side of the first substrate, and the driving circuit layer, the light-emitting device layer, and the stress release layer are located between the first substrate and the second substrate.

[0027] An embodiment of the present application adopts a display panel and a manufacturing method thereof. By providing a stress release layer with a recessed portion at a position corresponding to the non-display area of the second substrate, when the display panel is bent, the recessed portion can play a role in releasing stress, avoiding the film layer in the non-display area from breaking when the bending radius is small, preventing water vapor and oxygen from entering the display area from the break in the non-display area, improving the reliability of the display panel, and reducing the risk of display panel failure. Description of the Drawings

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for description in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0029] Figure 1 is a schematic cross-sectional structure diagram of the first display panel provided by the embodiment of the present application;

[0030] Figure 2 is a schematic top view structure of the second substrate provided by the embodiment of the present application Figure 1 ;

[0031] Figure 3 is a schematic top view structure of the second substrate provided by the embodiment of the present application Figure 2 ;

[0032] Figure 4 is a schematic top view structure of the second substrate provided by the embodiment of the present application Figure 3 ;

[0033] Figure 5 is a schematic top view structure of the second substrate provided by the embodiment of the present application Figure 4 ;

[0034] Figure 6 is a schematic cross-sectional structure diagram of the second display panel provided by the embodiment of the present application;

[0035] Figure 7 is a schematic cross-sectional structure diagram of a third display panel provided by an embodiment of the present application;

[0036] Figure 8 is a schematic flow chart of a method for manufacturing a display panel provided by an embodiment of the present application. Specific embodiments

[0037] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application. In addition, it should be understood that the specific embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless otherwise stated, the orientation terms such as "upper" and "lower" usually refer to the upper and lower in the actual use or working state of the device, specifically the drawing direction in the accompanying drawings; and "inner" and "outer" refer to the outline of the device.

[0038] An embodiment of the present application provides a display panel and a method for manufacturing the same. The following will be described in detail respectively. It should be noted that the description order of the following embodiments does not limit the preferred order of the embodiments.

[0039] Please refer to Figure 1 , an embodiment of the present application provides a display panel, including a display area 111 and a non-display area 112, and the non-display area 112 is provided on one side of the display area 111. In the embodiment of the present application, the non-display area 112 is provided on the periphery of the display area 111, that is, the non-display area 112 surrounds the display area 111. Of course, according to the selection of the actual situation and specific requirements, the non-display area 112 can be provided only on one side of the display area 111, and this is not uniquely limited here.

[0040] The display panel includes a first substrate 110, a driving circuit layer 120, and a light-emitting device layer 130. The driving circuit layer 120 is provided on one side of the first substrate 110, and the light-emitting device layer 130 is provided on the side of the driving circuit layer 120 away from the first substrate 110. In this embodiment, the light-emitting device layer 130 is electrically connected to the driving circuit layer 120, and the driving circuit layer 120 supplies power to the light-emitting device layer 130, thereby driving the light-emitting device layer 130 to emit light.

[0041] The display panel further includes a second substrate 210 and a stress release layer 231. The second substrate 210 is disposed opposite to the first substrate 110. The driving circuit layer 120 and the light-emitting device layer 130 are disposed between the first substrate 110 and the second substrate 210. The stress release layer 231 is disposed on a side of the second substrate 210 close to the first substrate 110. The stress release layer 231 corresponds to the non-display area 112, and the stress release layer 231 is provided with a recess 233.

[0042] In the display panel according to the embodiment of the present application, by providing the stress release layer 231 having the recess 233 at a position corresponding to the non-display area 112 of the second substrate 210, when the display panel is bent, the recess 233 can play a role in releasing stress, avoiding the film layer in the non-display area 112 from breaking when the bending radius is small, preventing water vapor and oxygen from entering the display area 111 from the break in the non-display area 112, improving the reliability of the display panel, and reducing the risk of display panel failure.

[0043] Specifically, as Figure 1 and Figure 2 shown, the recess 233 includes a plurality of first grooves 234 extending along the first direction X. The plurality of first grooves 234 are arranged along the second direction Y. The first direction X and the second direction Y intersect; the stress release layer 231 includes a plurality of color resist blocks 232. The plurality of color resist blocks 232 are spaced apart and arranged along the second direction Y. A first groove 234 is provided between two adjacent color resist blocks 232 arranged along the second direction Y. In this structure, when the display panel is bent along the second direction Y, the first grooves 234 can play an effect of releasing stress, avoiding the film layer in the non-display area 112 from breaking, effectively preventing water vapor and oxygen from entering the display area 111 from the break in the non-display area 112, improving the reliability of the display panel, and reducing the risk of display panel failure. In the embodiment of the present application, the first direction X and the second direction Y are perpendicularly arranged. Of course, according to the actual situation and specific requirements, the first direction X and the second direction Y can also intersect at other angles, which is not uniquely limited herein.

[0044] Specifically, the width of the first groove 234 is gradually expanded from the second substrate 210 towards the first substrate 110. In this structure, when the bending radius of the display panel is small, the first groove 234 can provide sufficient space for the color resist block 232 to move, and the first groove 234 can better release stress, thereby avoiding the film layer in the non-display area 112 from breaking, effectively preventing water vapor and oxygen from entering the display area 111 from the break in the non-display area 112, improving the reliability of the display panel, and reducing the risk of display panel failure.

[0045] Specifically, as Figure 1 and Figure 3As shown, the recessed portion 233 further includes a plurality of second grooves 235 extending along the second direction Y. The plurality of second grooves 235 are arranged along the first direction X. The first groove 234 and the second grooves 235 communicate with each other. A second groove 235 is provided between two adjacent color resistance blocks 232 arranged along the first direction X. In this structure, when the display panel is bent along the first direction X, the second grooves 235 can play a role in releasing stress, avoiding the film layer in the non-display area 112 from breaking, effectively preventing water vapor and oxygen from entering the display area 111 from the breakage in the non-display area 112, improving the reliability of the display panel, and reducing the risk of display panel failure. In this embodiment, the plurality of color resistance blocks 232 are arranged in an array along the first direction X and the second direction Y. Of course, according to the actual situation and specific requirements, the plurality of color resistance blocks 232 can also be distributed according to other rules, which is not uniquely limited herein.

[0046] Specifically, the width of the second groove 235 is gradually enlarged from the second substrate 210 towards the first substrate 110. In this structure, when the bending radius of the display panel is small, the second groove 235 can provide sufficient space for the movement of the color resistance blocks 232, and the second groove 235 can better release stress, thereby avoiding the film layer in the non-display area 112 from breaking, effectively preventing water vapor and oxygen from entering the display area 111 from the breakage in the non-display area 112, improving the reliability of the display panel, and reducing the risk of display panel failure.

[0047] Specifically, as Figure 1 、 Figure 4 and Figure 5 shown, the recessed portion 233 further includes via holes 236 provided in the color resistance blocks 232. In this structure, the via holes 236 can improve the deformation ability of the color resistance blocks 232, greatly improve the flexibility of the display panel, thereby avoiding the film layer in the non-display area 112 from breaking, effectively preventing water vapor and oxygen from entering the display area 111 from the breakage in the non-display area 112, improving the reliability of the display panel, and reducing the risk of display panel failure.

[0048] Specifically, the cross-sectional area of the via hole 236 is gradually enlarged from the second substrate 210 towards the first substrate 110. In this structure, when the bending radius of the display panel is small, the via hole 236 can provide sufficient space for the deformation of the color resistance blocks 232, and the via hole 236 can better release stress, thereby avoiding the film layer in the non-display area 112 from breaking, effectively preventing water vapor and oxygen from entering the display area 111 from the breakage in the non-display area 112, improving the reliability of the display panel, and reducing the risk of display panel failure.

[0049] Specifically, as Figure 4 and Figure 5As shown, the cross-sectional shape of the via 236 is circular. Of course, according to the actual situation and specific requirements, the cross-sectional shape of the via 236 can also be other shapes. For example, the cross-sectional shape of the via 236 can be elliptical or polygonal, and no special limitation is made here.

[0050] Specifically, as Figure 1 shown, the display panel further includes a color filter layer 230. The color filter layer 230 is disposed on one side of the second substrate 210 close to the light-emitting device layer 130. The color filter layer 230 is disposed corresponding to the display area 111. The color filter layer 230 includes a red color resist 237, a green color resist 238, and a blue color resist 239.

[0051] Specifically, as Figure 1 shown, the color resist block 232 is selected from a stacked structure of one or at least two of the red color resist 237, the green color resist 238, and the blue color resist 239. In this structure, when the color resist block 232 includes the red color resist 237, the red color resist 237 of the color resist block 232 and the red color resist 237 of the display area 111 can be formed simultaneously; when the color resist block 232 includes the green color resist 238, the green color resist 238 of the color resist block 232 and the green color resist 238 of the display area 111 can be formed simultaneously; when the color resist block 232 includes the blue color resist 239, the blue color resist 239 of the color resist block 232 and the blue color resist 239 of the display area 111 can be formed simultaneously, without the need to add a photomask and process for manufacturing the color resist block 232, and the manufacturing process is simple and flexibly adjustable.

[0052] As Figure 1 shown, in the display panel of the embodiment of the present application, the color resist block 232 is a stacked structure of the red color resist 237 and the green color resist 238. Of course, according to the actual situation and specific requirements, the color resist block 232 can include only one color resist. For example, the color resist block 232 can be the red color resist 237, the green color resist 238, or the blue color resist 239; the color resist block 232 can include two color resists. For example, the color resist block 232 can be a stacked structure including the red color resist 237 and the blue color resist 239, or the color resist block 232 can be a stacked structure including the green color resist 238 and the blue color resist 239, or the color resist block 232 can be a stacked structure including the red color resist 237 and the green color resist 238; the color resist block 232 can include three color resists. For example, the color resist block 232 can be a stacked structure including the red color resist 237, the green color resist 238, and the blue color resist 239, and no unique limitation is made here.

[0053] Specifically, as Figure 6As shown, the heights of two adjacent color filter blocks 232 are different. In this structure, when the display panel is bent, the adjacent color filter blocks 232 will not interfere with or squeeze each other, thus preventing the film layer in the non-display area 112 from breaking, effectively preventing water vapor and oxygen from entering the display area 111 through the break in the non-display area 112, improving the reliability of the display panel, and reducing the risk of display panel failure.

[0054] As Figure 6 shown, in the display panel of the embodiment of the present application, between two adjacent color filter blocks 232, one of the color filter blocks 232 includes a red color filter 237, and the other color filter block 232 includes a red color filter 237 and a green color filter 238. The present application adjusts the height difference between two adjacent color filter blocks 232 by adjusting the number of layers of the color filter. For example, between two adjacent color filter blocks 232, one of the color filter blocks 232 is one of a red color filter 237, a green color filter 238, and a blue color filter 239, and the other color filter block 232 is a stacked structure including two or three of a red color filter 237, a green color filter 238, and a blue color filter 239; or, between two adjacent color filter blocks 232, one of the color filter blocks 232 is a stacked structure including two of a red color filter 237, a green color filter 238, and a blue color filter 239, and the other color filter block 232 is a stacked structure including a red color filter 237, a green color filter 238, and a blue color filter 239.

[0055] Specifically, as Figure 1 , Figure 6 and Figure 7 shown, the display panel further includes a packaging layer 140 covering the light-emitting device layer 130. The packaging layer 140 is located on the side of the color filter layer 230 close to the light-emitting device layer 130. The thickness of the non-display area 112 of the first substrate 110 is less than the thickness of the display area 111 of the first substrate 110. In this structure, by making the thickness of the non-display area 112 of the first substrate 110 less than the thickness of the display area 111 of the first substrate 110, the part of the packaging layer 140 corresponding to the non-display area 112 can be adjusted to the neutral plane of the display panel, increasing the bending radius of the packaging layer 140 and preventing the packaging layer 140 from breaking when the display panel is bent. In this embodiment, by adding a stress release layer 231 in the non-display area 112, the part of the packaging layer 140 corresponding to the non-display area 112 can be adjusted to the neutral plane of the display panel, increasing the bending radius of the packaging layer 140 and preventing the packaging layer 140 from breaking when the display panel is bent.

[0056] Specifically, the encapsulation layer 140 includes a first inorganic layer 141, an organic layer 142, and a second inorganic layer 143. The first inorganic layer 141 covers one side of the light-emitting device layer 130 away from the driving circuit layer 120. The organic layer 142 covers one side of the first inorganic layer 141 away from the light-emitting device layer 130. The second inorganic layer 143 covers one side of the organic layer 142 away from the first inorganic layer 141, thereby preventing moisture and oxygen from eroding the light-emitting device layer 130 and the driving circuit layer 120, improving the reliability of the display panel, and reducing the risk of display panel failure.

[0057] Specifically, as Figure 1 , Figure 6 and Figure 7 shown, in the display panel of the embodiment of the present application, the display panel further includes a light-shielding layer 220, and the light-shielding layer 220 may but is not limited to a black matrix. The light-shielding layer 220 is disposed on one side of the second substrate 210 close to the light-emitting device layer 130. The light-shielding layer 220 is disposed corresponding to the display area 111 and the non-display area 112. The light-shielding layer 220 is provided with a plurality of accommodation grooves 221 corresponding to the display area 111. The accommodation grooves 221 penetrate through the light-shielding layer 220. The red color filter 237, the green color filter 238, and the blue color filter 239 in the display area 111 are disposed in the corresponding accommodation grooves 221. The stress release layer 231 (color filter block 232) is disposed on one side of the light-shielding layer 220 close to the light-emitting device layer 130.

[0058] Specifically, as Figure 1 , Figure 6 and Figure 7 shown, the driving circuit layer 120 includes a buffer layer 127, an active layer 121 disposed on the side of the buffer layer 127 away from the first substrate 110, a gate insulating layer 122 disposed on the side of the active layer 121 away from the first substrate 110, a gate layer 123 disposed on the side of the gate insulating layer 122 away from the active layer 121, a first insulating layer 124 covering the gate and the active layer 121, a source-drain metal layer 125 disposed on the first insulating layer 124, and a second insulating layer 126 disposed on the source-drain metal layer 125 and the first insulating layer 124; the thickness of the part of the first insulating layer 124 corresponding to the non-display area 112 is less than the thickness of the part of the first insulating layer 124 corresponding to the display area 111. In this structure, by making the thickness of the part of the first insulating layer 124 corresponding to the non-display area 112 less than the thickness of the part of the first insulating layer 124 corresponding to the display area 111, the part of the encapsulation layer 140 corresponding to the non-display area 112 can be adjusted to the neutral plane of the display panel, increasing the bending radius of the encapsulation layer 140 and preventing the encapsulation layer 140 from breaking when the display panel is bent.

[0059] Specifically, as Figure 1 , Figure 6 and Figure 7As shown in the figure, the light-emitting device layer 130 includes a plurality of OLED devices 131 disposed in the display area 111. The plurality of OLED devices 131 are arranged in an array, and each OLED device 131 is set corresponding to one of the red color resist 237, the green color resist 238, and the blue color resist 239 in the display area 111. In this embodiment, the OLED device 131 includes an anode 132 disposed on the second insulating layer 126, a light-emitting functional layer disposed on the anode 132, and a cathode disposed on the light-emitting functional layer. The anode 132 is electrically connected to the source-drain metal layer 125, and the driving circuit layer 120 energizes the OLED device 131 through the source-drain metal layer 125, so that there is a voltage difference between the anode 132 and the cathode, thereby driving the light-emitting functional layer of the OLED device 131 to emit light.

[0060] Specifically, the light-emitting functional layer includes a hole injection layer, a hole transport layer, a light-emitting layer, an electron transport layer, and an electron injection layer that are sequentially stacked in the direction from the anode 132 to the cathode. When there is a voltage difference between the anode 132 and the cathode, holes reach the light-emitting layer after passing through the hole injection layer and the hole transport layer in sequence, and electrons reach the light-emitting layer after passing through the electron injection layer and the electron transport layer in sequence. The holes and electrons combine in the light-emitting layer, and the energy generated by the combination excites the outermost electrons of the material, causing them to jump to the outer electron orbit. Since it is only excitation, the outermost electron orbit is unstable, and the outermost electrons will immediately return to the original orbit, thus releasing the excess energy in the form of light, thereby achieving light emission.

[0061] Please refer to Figure 8 and, in combination with Figures 1 to 7 , an embodiment of the present application further provides a manufacturing method of the above display panel. The display panel includes a display area 111 and a non-display area 112, and the non-display area 112 is disposed on one side of the display area 111. In the embodiment of the present application, the non-display area 112 is disposed on the periphery of the display area 111, that is, the non-display area 112 surrounds the display area 111. Of course, according to the actual situation and specific requirements, the non-display area 112 can be disposed only on one side of the display area 111, and this is not uniquely limited here. The manufacturing method of the display panel includes the following steps:

[0062] Step B1: Form the driving circuit layer 120 and the light-emitting device layer 130 on the first substrate 110. The driving circuit layer 120 is disposed on one side of the first substrate 110, and the light-emitting device layer 130 is disposed on the side of the driving circuit layer 120 away from the first substrate 110;

[0063] Step B2: Form a stress release layer 231 on the second substrate 210. The stress release layer 231 corresponds to the non-display area 112, and the stress release layer 231 is provided with a recess 233;

[0064] Step B3: Fix the second substrate 210 to one side of the first substrate 110. The driving circuit layer 120, the light-emitting device layer 130, and the stress relief layer 231 are located between the first substrate 110 and the second substrate 210. The second substrate 210 can be fixed to one side of the first substrate 110 by, but not limited to, a fixing adhesive 300. In this embodiment, the order of the above-mentioned Step B1 and Step B2 can be replaced and is not uniquely defined herein.

[0065] In the embodiment of the present application, a stress relief layer 231 having a recess 233 is provided at a position of the second substrate 210 corresponding to the non-display area 112. When the display panel is bent, the recess 233 can play a role in relieving stress, avoiding breakage of the stress relief layer 231 when the bending radius is small, preventing water vapor and oxygen from entering the display area 111 from the break of the stress relief layer 231, improving the reliability of the display panel, and reducing the risk of display panel failure.

[0066] Specifically, the above-mentioned Step B2 includes:

[0067] Step B21: Form a light-shielding layer 220 on the second substrate 210. The light-shielding layer 220 is provided corresponding to the display area 111 and the non-display area 112. The light-shielding layer 220 is provided with a plurality of accommodation grooves 221 corresponding to the display area 111, and the accommodation grooves 221 penetrate through the light-shielding layer 220.

[0068] Step B22: Form a color filter layer 230 and a stress relief layer 231 on the second substrate 210. The color filter layer 230 and the stress relief layer 231 are provided on a side of the light-shielding layer 220 close to the light-emitting device layer 130. The color filter layer 230 is provided corresponding to the display area 111, and the stress relief layer 231 is provided corresponding to the non-display area 112. The color filter layer 230 includes a red color resist 237, a green color resist 238, and a blue color resist 239 provided in the display area 111. The red color resist 237, the green color resist 238, and the blue color resist 239 in the display area 111 are provided in the corresponding accommodation grooves 221.

[0069] Specifically, in the above step B22, the stress relief layer 231 includes a plurality of color resistance blocks 232, and the plurality of color resistance blocks 232 are arranged at intervals. The color resistance blocks 232 are selected from one or at least two stacked structures of a red color resistance 237, a green color resistance 238, and a blue color resistance 239. In this setting, when the color resistance block 232 includes the red color resistance 237, the red color resistance 237 of the color resistance block 232 and the red color resistance 237 of the display area 111 can be formed simultaneously; when the color resistance block 232 includes the green color resistance 238, the green color resistance 238 of the color resistance block 232 and the green color resistance 238 of the display area 111 can be formed simultaneously; when the color resistance block 232 includes the blue color resistance 239, the blue color resistance 239 of the color resistance block 232 and the blue color resistance 239 of the display area 111 can be formed simultaneously, without the need to add a photomask and process for manufacturing the color resistance block 232, and the manufacturing process is simple and flexibly adjustable.

[0070] The above provides a detailed introduction to a display panel and a manufacturing method thereof provided by an embodiment of the present application. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those skilled in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. A display panel, characterized in that, It includes a display area and a non-display area located on one side of the display area. The display panel includes: A first substrate; A driving circuit layer disposed on one side of the first substrate; A light-emitting device layer disposed on the side of the driving circuit layer away from the first substrate; A second substrate disposed opposite to the first substrate, with the driving circuit layer and the light-emitting device layer located between the first substrate and the second substrate; and A stress release layer disposed on the second substrate and on the side of the second substrate close to the first substrate. The stress release layer corresponds to the non-display area and has a recess; Wherein, the stress release layer includes a plurality of color resist blocks arranged at intervals; The recess includes a plurality of first grooves extending in a first direction. The first grooves penetrate the stress release layer, and the width of the first grooves is gradually expanded from the second substrate towards the first substrate. The plurality of first grooves are arranged in a second direction, and the first direction and the second direction intersect; The first grooves are provided between two adjacent color resist blocks arranged in the second direction.

2. The display panel according to claim 1, wherein The recess further includes a plurality of second grooves extending in the second direction. The plurality of second grooves are arranged in the first direction, and the first grooves and the second grooves communicate with each other; The second grooves are provided between two adjacent color resist blocks arranged in the first direction.

3. The display panel according to claim 1, characterized in that, The recess further includes vias provided in the color resist blocks.

4. The display panel according to claim 3, wherein The cross-sectional shape of the via is circular, oval or polygonal.

5. The display panel according to claim 1, characterized in that, The color resist blocks are selected from one or at least two stacked structures of red color resist, green color resist and blue color resist.

6. The display panel according to claim 1, wherein The heights of two adjacent color resist blocks are different.

7. The display panel according to any one of claims 1 to 6, characterized in that, The display panel further includes a packaging layer covering the light-emitting device layer, and the thickness of the non-display area of the first substrate is less than the thickness of the display area of the first substrate.

8. The display panel according to claim 7, wherein The driving circuit layer includes an active layer, a gate insulating layer disposed on the side of the active layer away from the first substrate, a gate layer disposed on the side of the gate insulating layer away from the active layer, a first insulating layer covering the gate and the active layer, and a source-drain metal layer disposed on the first insulating layer; The thickness of the part of the first insulating layer corresponding to the non-display area is less than the thickness of the part of the first insulating layer corresponding to the display area.

9. A method for manufacturing a display panel, the display panel including a display area and a non-display area located on one side of the display area, characterized in that, The manufacturing method of the display panel includes the following steps: Form a driving circuit layer and a light-emitting device layer on the first substrate. The driving circuit layer is disposed on one side of the first substrate, and the light-emitting device layer is disposed on the side of the driving circuit layer away from the first substrate; A stress relief layer is formed on the second substrate. The stress relief layer is disposed corresponding to the non-display area, and the stress relief layer is provided with a recess; the stress relief layer includes a plurality of color resist blocks arranged at intervals; the recess includes a plurality of first grooves extending in a first direction, the first grooves penetrate through the stress relief layer, and the width of the first grooves is gradually enlarged from the second substrate towards the first substrate. The plurality of first grooves are arranged in a second direction, the first direction intersects with the second direction, and the first grooves are located between two adjacent color resist blocks arranged in the second direction; The second substrate is fixed to one side of the first substrate, and the driving circuit layer, the light-emitting device layer and the stress relief layer are located between the first substrate and the second substrate.

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