Manufacturing method of display panel, display panel and display device

Abstract

The invention provides a manufacturing method of a display panel, the display panel and a display device, and relates to the technical field of display. The manufacturing method comprises the following steps: providing a display substrate, wherein the display substrate comprises a display area and a bending area; forming a polarization layer on the display area on one side of the display substrate; forming an optical adhesive layer on one side, deviating from the display substrate, of the polarizing layer; one side, close to the bending area, of the polarizing layer on the display substrate is coated with protective glue, the protective glue covers the bending area and at least part of the display area, and the protective glue is cured to form a protective layer. According to the manufacturing method provided by the invention, the phenomenon that bubbles are generated between the film layers in the manufacturing process of the display panel is improved.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of display, in particular, to a manufacturing method of display panel, display panel and display device. BACKGROUND

[0002] Organic Electro luminescent Display (OLED) gradually becomes the mainstream in the display field due to its low power consumption, high color saturation, wide viewing angle, thin thickness, flexible implementation and other excellent performances, and can be widely applied to terminal products such as smart phones, tablet computers and televisions.

[0003] However, in the manufacturing process of the current display panel, there is a phenomenon of bubbles generated between film layers, which seriously affects the yield of the display panel.

[0004] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present disclosure, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0005] The purpose of the present disclosure is to provide a manufacturing method of display panel, display panel and display device, which improves the phenomenon of bubbles generated between film layers in the manufacturing process of the display panel.

[0006] According to one aspect of the present disclosure, a manufacturing method of display panel is provided, which comprises:

[0007] providing a display substrate, the display substrate comprising a display area and a bending area;

[0008] forming a polarizing layer on the display area on one side of the display substrate;

[0009] forming an optical adhesive layer on the side of the polarizing layer away from the display substrate;

[0010] applying a protective adhesive on the side of the polarizing layer on the display substrate close to the bending area, the protective adhesive covering the bending area and at least part of the display area, and performing a curing process on the protective adhesive to form a protective layer.

[0011] In an exemplary embodiment of the present disclosure, after forming the polarizing layer on the display area on one side of the display substrate, before forming the optical adhesive layer on the side of the polarizing layer away from the display substrate, the manufacturing method further comprises:

[0012] cutting the display substrate and the polarizing layer to form the display substrate and the polarizing layer in a predetermined shape.

[0013] In an exemplary embodiment of the present disclosure, a polarized substrate protection film is provided on the polarized layer, and the polarized substrate protection film is removed before forming the optical adhesive layer.

[0014] In an exemplary embodiment of the present disclosure, an optical adhesive layer is formed on the side of the polarized layer facing away from the display substrate, comprising:

[0015] An optical adhesive substrate is provided, comprising an optical adhesive layer and a first optical adhesive protection film and a second optical adhesive protection film on both sides of the optical adhesive layer.

[0016] A glue repellent is sprayed on one side of the optical adhesive substrate.

[0017] The second optical adhesive protection film is removed, the optical adhesive layer is arranged on the side of the polarized layer facing away from the display substrate, and the optical adhesive layer and the side of the first optical adhesive protection film sprayed with the glue repellent are directed towards the bending area.

[0018] In an exemplary embodiment of the present disclosure, the side edges of the optical adhesive layer and the first optical adhesive protection film directed towards the bending area are flush.

[0019] In an exemplary embodiment of the present disclosure, the first optical adhesive protection film is removed after the protective layer is formed.

[0020] In an exemplary embodiment of the present disclosure, in the direction of the display area towards the bending area, the optical adhesive layer exceeds the polarized layer, and the protective adhesive fills the gap between the part of the optical adhesive layer exceeding the polarized layer and the display substrate.

[0021] In an exemplary embodiment of the present disclosure, the distance of the optical adhesive layer exceeding the polarized layer is 0.1mm-0.2mm.

[0022] In an exemplary embodiment of the present disclosure, the manufacturing method further comprises:

[0023] A cover plate layer is attached on the side of the optical adhesive layer and the protective layer facing away from the display substrate.

[0024] In an exemplary embodiment of the present disclosure, the display substrate further comprises a binding area, the binding area is located on both sides of the bending area with the display area; the protective layer covers the bending area and at least part of the display area and at least part of the binding area.

[0025] According to another aspect of the present disclosure, a display panel is provided, which is manufactured by the above manufacturing method.

[0026] According to still another aspect of the present disclosure, a display device is provided, which includes the display panel described above.

[0027] The manufacturing method of the display panel provided by the present disclosure forms the optical adhesive layer on the polarizing layer, and then applies the protective adhesive on the side of the display substrate close to the bending area of the polarizing layer, thereby avoiding the formation of a protective adhesive step at the edge of the polarizing layer adjacent to the protective adhesive due to the siphoning phenomenon of the protective adhesive and the polarizing layer, and further avoiding the formation of bubbles at the edge of the polarizing layer adjacent to the protective adhesive due to the optical adhesive layer, effectively improving the phenomenon of bubbles generated between film layers during the manufacturing process of the display panel. Even if the protective adhesive is siphoned onto the optical adhesive layer to cause bubbles, the bubbles are relatively far away from the display area and are easy to hide below the ink of the cover plate layer, thereby improving the production yield of the display panel.

[0028] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and are not limiting to the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0029] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the disclosure. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained from these drawings without creative labor for those skilled in the art.

[0030] Figure 1 A schematic diagram of the display substrate attached with the polarizing layer in the related art provided by the present disclosure;

[0031] Figure 2 A cross-sectional schematic diagram of Figure 1 ;

[0032] Figure 3 A schematic diagram of the display substrate after applying the protective adhesive in Figure 1 ;

[0033] Figure 4 A cross-sectional schematic diagram of Figure 3 ;

[0034] Figure 5 A schematic diagram of the display substrate after laser cutting;

[0035] Figure 6 A cross-sectional schematic diagram of Figure 5 ;

[0036] Figure 7 A schematic diagram of the polarizing substrate after removing the protective film in Figure 5 ;

[0037] Figure 8 A cross-sectional schematic diagram of Figure 7a cross-sectional view of the display panel after the optical adhesive layer is attached;

[0038] Figure 9 is a cross-sectional view of the display panel after the optical adhesive layer is attached; Figure 7 is a cross-sectional view of the display panel after the optical adhesive layer is attached;

[0039] Figure 10 is a cross-sectional view of the display panel after the optical adhesive layer is attached; Figure 9 is a cross-sectional view of the display panel after the optical adhesive layer is attached;

[0040] Figure 11 is a cross-sectional view of the display panel after the optical adhesive layer is attached;

[0041] Figure 12 is a cross-sectional view of the display panel after the optical adhesive layer is attached;

[0042] Figure 13 is a cross-sectional view of the display panel after the optical adhesive layer is attached;

[0043] Figure 14 is a flow chart of a manufacturing method of a display panel according to an embodiment of the present disclosure.

[0044] Figure 15 is a cross-sectional view of the display panel after the optical adhesive layer is attached;

[0045] Figure 16 is a cross-sectional view of the display panel after the optical adhesive layer is attached;

[0046] Figure 17 is a cross-sectional view of the display panel after the optical adhesive layer is attached;

[0047] Figure 18 is a cross-sectional view of the display panel after the optical adhesive layer is attached. DETAILED DESCRIPTION

[0048] Example embodiments now will be described more fully hereinafter with reference to the accompanying drawings. Example embodiments, may, however, be implemented in many different forms and should not be construed as limited to the implementations set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the scope of example embodiments to those skilled in the art. Like reference numerals refer to like elements throughout the figures, and thus description of the same will not be repeated.

[0049] Although relative terms such as "up" and "down" are used in this specification to describe the relative relationship of one component of an icon to another, these terms are used only for convenience, such as according to the orientation of the examples shown in the accompanying drawings. It is understood that if the device of the icon is flipped upside down, the component described as "up" will become the component described as "down." When a structure is "up" of another structure, it may mean that the structure is integrally formed on the other structure, or that the structure is "directly" mounted on the other structure, or that the structure is "indirectly" mounted on the other structure through another structure.

[0050] The terms “a,” “one,” “the,” and “the” are used to indicate the existence of one or more elements / components / etc.; the terms “including” and “having” are used to indicate an open-ended inclusion and to mean that there may be other elements / components / etc. in addition to the listed elements / components / etc.; the terms “first” and “second” are used only as markers and are not a limitation on the number of objects.

[0051] Currently, with the development of OLED products, they are trending towards thinner and ultra-narrower bezel designs. Therefore, the thickness of the OCA (Optical Coating A) layer needs to be minimized, but thinner OCA inks result in reduced ink separation and bubble resistance. Simultaneously, due to the narrower bezels, the MCL (Modifier Cladding Layer) inevitably overlaps with the POL (Polarizing Layer). After the POL protective film is removed, MCL steps are easily formed. These steps cause the OCA bonding bubbles to become larger, making subsequent debubbling processes ineffective.

[0052] like Figures 1 to 8 As shown, the side of the display substrate 10' closest to the bending area is coated with MCL30', the bending area is connected to the circuit board 40', and the bending area is equipped with IC50'; after the POL protective film 22' on POL21' is removed, MCL30' will extend beyond the plane of POL21' to form a step. Figure 9 and Figure 10 As shown, OCA bubbles are easily formed during the subsequent OCA61′ attachment process. Specifically, as... Figures 11 to 13 As shown, during the coating of MCL30′, due to the siphon effect, MCL30′ will rise to the surface of POL21′, forming an MCL step with a thickness equivalent to that of the POL protective film 22′ after the POL protective film 22′ is removed. Typically, the thickness of the POL protective film 22′ is 50 μm. Because of the step in MCL30′, subsequent adhesion of OCA61′ and OCA protective film 62′ is prone to generating air bubbles.

[0053] The thickness of the OCA61' is different, and the width of the bubbles generated is also different. When the thickness of the OCA61' is 150 μm, the width of the bubbles is about 200 μm; when the thickness of the OCA61' is reduced to 100 μm, the width of the bubbles increases to 500 μm. The wider the bubbles are when the OCA61' is attached, the more difficult it is to remove them subsequently, and the wider the bubbles are, the closer they are to the display area, and the more difficult it is to block them with ink.

[0054] To solve the above technical problems, embodiments of the present disclosure provide a manufacturing method of a display panel, as shown in Figure 14 The manufacturing method comprises the following steps:

[0055] In step S100, a display substrate is provided, and the display substrate comprises a display area and a bending area.

[0056] In step S200, a polarizing layer is formed on the display area on one side of the display substrate.

[0057] In step S300, an optical adhesive layer is formed on the side of the polarizing layer away from the display substrate.

[0058] In step S400, a protective adhesive is coated on the side of the display substrate close to the bending area of the polarizing layer, the protective adhesive covers the bending area and at least part of the display area, and the protective adhesive is subjected to a curing process to form a protective layer.

[0059] The manufacturing method of the display panel provided by the present disclosure avoids the formation of a protective adhesive step at the edge of the polarizing layer adjacent to the protective adhesive due to the siphoning phenomenon of the protective adhesive and the polarizing layer, thereby avoiding the formation of bubbles in the optical adhesive layer at the edge of the polarizing layer adjacent to the protective adhesive, effectively improving the phenomenon of bubbles generated between film layers during the manufacturing process of the display panel. Even if the protective adhesive siphons onto the optical adhesive layer to cause bubbles, the distance of the bubbles from the display area is relatively far, and the bubbles can be easily hidden below the ink of the cover layer, thereby improving the production yield of the display panel.

[0060] In the following, each step in the manufacturing method of the display panel provided by the embodiments of the present disclosure will be described in detail.

[0061] In step S100, a display substrate is provided, and the display substrate comprises a display area and a bending area.

[0062] Specifically, the display panel can be an organic light emitting diode (OLED) flexible display panel. Due to its flexible characteristics, the Pad Bending process can be used to directly bend the flexible panel part to the back of the flexible panel to connect with the circuit board (Chip On Flex, COF), that is, the display substrate 10 comprises a display area AA and a bending area WZ.

[0063] The display substrate 10 can include a substrate, a driving functional layer, a display functional layer, and an encapsulation layer.

[0064] The substrate can be made of an organic material, such as Polymethylmethacrylate (PMMA), Polyvinyl alcohol (PVA), Polyvinylphenol (PVP), Polyether sulfone (PES), polyimide, polyamide, polyacetal, Poly carbonate (PC), Polyethylene terephthalate (PET), Polyethylene naphthalate (PEN), or a combination thereof. In addition, the substrate can be made of a flexible material, such as polyimide (PI).

[0065] The driving functional layer is disposed on the substrate and includes a plurality of pixel driving circuits and a plurality of signal lines for providing electrical signals to the pixel driving circuits. Each pixel driving circuit includes at least a transistor TFT and a conductive structure for connecting the transistor TFT. For example, the driving functional layer includes an active layer disposed on the substrate, a gate insulating layer covering the substrate and the active layer, a gate layer disposed on the gate insulating layer, an interlayer dielectric layer covering the gate layer and the gate insulating layer, a source / drain electrode layer disposed on the interlayer dielectric layer, and a first via hole penetrating through the interlayer dielectric layer and the gate insulating layer to connect the source / drain electrode layer and the active layer. In addition, the driving functional layer further includes a planarization layer covering the source / drain electrode layer and the interlayer dielectric layer.

[0066] The display functional layer includes an anode disposed on the planarization layer and connected to the source / drain electrode layer through a via hole penetrating through the planarization layer. A pixel defining layer in the display functional layer covers the planarization layer and part of the anode. The pixel defining layer has a plurality of pixel openings, and the anode in the pixel openings is not covered by the pixel defining layer. The display functional layer further includes a light-emitting layer disposed in the pixel openings and a cathode covering the pixel defining layer and the light-emitting layer. When a first voltage is applied to the anode and a second voltage is applied to the cathode through the driving functional layer, the light-emitting layer in the pixel openings emits light under the pressure difference between the first voltage and the second voltage. The anode, the light-emitting layer, and the cathode corresponding to one pixel opening form a pixel unit.

[0067] The encapsulation layer is located on the pixel defining layer. The encapsulation layer may include a first encapsulation layer, a second encapsulation layer, and a third encapsulation layer. For example, a first encapsulation layer can be formed on the side of the light-emitting layer away from the substrate using physical vapor deposition (PVD) or chemical vapor deposition (CVD). Then, a second encapsulation layer can be formed on the side of the first encapsulation layer away from the light-emitting layer using inkjet printing. Finally, a third encapsulation layer can be formed on the side of the second encapsulation layer away from the first encapsulation layer using PVD or CVD. The second encapsulation layer can be an organic encapsulation layer, while the first and third encapsulation layers can be inorganic encapsulation layers. By setting multiple inorganic encapsulation layers, the ability of the encapsulation layer to block water and oxygen can be improved, and by setting organic encapsulation layers, planarization can be achieved. For example, the inner and outer inorganic encapsulation layers can be made of inorganic materials such as silicon nitride (SiN). The organic encapsulation layer can be made of curable (e.g., photocurable or thermocurable) organic materials; for example, the organic encapsulation layer can be made of at least one of epoxy resin-based organic materials, acrylate-based organic materials, and silicone-based materials. Furthermore, the packaging structure may include not only the aforementioned internal inorganic packaging layer, external inorganic packaging layer, and organic packaging layer, but may also include other inorganic and organic packaging layers, which may be stacked alternately. This disclosure does not impose any restrictions on this.

[0068] Among them, such as Figure 15 As shown, the display substrate 10 has undergone a thinning process in the bending region WZ, for example, by forming a recess on the substrate, thereby improving the bending performance of the display substrate 10 in the bending region WZ.

[0069] In step S200, a polarizing layer is formed on the display area on one side of the display substrate 10.

[0070] Specifically, in OLED display devices, if a polarizer (POL) is provided on the bending region WZ of the display substrate 10 during bending, the polarizer is more prone to breakage during small-radius bending. Therefore, if... Figure 15 As shown, the polarizer is only set on the display area AA.

[0071] Among them, such as Figure 15 As shown, a polarizing substrate protective film 22 is provided on the polarizer to protect the polarizer before the protective adhesive 30 is applied.

[0072] The manufacturing method further includes, after forming a polarizing layer 21 on the display area AA on one side of the display substrate 10, and before forming an optical adhesive layer 61 on the side of the polarizing layer 21 away from the display substrate 10, cutting the display substrate 10 and the polarizing layer 21 to form a display substrate 10 and the polarizing layer 21 of a preset shape.

[0073] In step S300, an optical adhesive layer is formed on the side of the polarizing layer away from the display substrate.

[0074] Specifically, as shown in Figure 16 , an optical adhesive layer 61 is formed on the side of the polarizing layer 21 away from the display substrate 10, and the cover plate layer is subsequently attached through the optical adhesive layer 61.

[0075] Among them, as shown in Figure 16 , the optical adhesive layer 61 is provided with a first optical adhesive protective film 62, which protects the optical adhesive layer 61 before the process of attaching the cover plate layer, thereby improving the effect of subsequently attaching the cover plate layer.

[0076] Among them, as shown in Figure 16 , in the direction of the display area AA towards the bending area WZ, the optical adhesive layer 61 exceeds the polarizing layer 21. For example, the distance between the optical adhesive layer 61 and the polarizing layer 21 is 0.1mm-0.2mm, such as 0.10mm, 0.11mm, 0.12mm, 0.13mm, 0.14mm, 0.15mm, 0.16mm, 0.17mm, 0.18mm, 0.19mm, 0.20mm, etc. The present disclosure does not list them one by one here; of course, the distance between the optical adhesive layer 61 and the polarizing layer 21 can also be less than 0.1mm or greater than 0.2mm.

[0077] Among them, as shown in Figure 16 , since the optical adhesive layer 61 needs to be cut before being set to match the shape of the display substrate 10 after cutting, the cut optical adhesive layer 61 and the first optical adhesive protective film 62 are flush on the side edge towards the bending area WZ, that is, the distance between the optical adhesive layer 61 and the polarizing layer 21 is the same as the distance between the first optical adhesive protective film 62 and the polarizing layer 21.

[0078] Among them, as shown in Figure 17 , before forming the optical adhesive layer 61 on the side of the polarizing layer 21 away from the display substrate 10, an optical adhesive base material is provided, which includes the optical adhesive layer 61 and the first optical adhesive protective film 62 and the second optical adhesive protective film 63 on both sides of the optical adhesive layer 61; the other side of the optical adhesive layer 61 is protected by the second optical adhesive protective film 63. Among them, the first optical adhesive protective film 62 is a heavy film, and the second optical adhesive protective film 63 is a light film.

[0079] Before applying the protective adhesive 30, a repellent agent is sprayed onto one side of the optical adhesive substrate using a spraying device 70. The repellent agent is an immiscible liquid with the protective adhesive 30; for example, glycerin, which is immiscible with acrylic adhesive, is sprayed to improve the adsorption phenomenon between the protective adhesive 30 and the optical adhesive layer 61. The first optical adhesive protective film 62 and the second optical adhesive protective film 63 form a protective layer for the optical adhesive layer 61 when the repellent agent is sprayed onto the optical adhesive substrate, preventing the repellent agent from being sprayed onto the upper and lower surfaces of the optical adhesive layer 61.

[0080] After spraying the adhesive repellent, the second protective film is removed, and the optical adhesive layer 61 is placed on the side of the polarizing layer 21 facing away from the display substrate 10, with the side of the optical adhesive layer 61 and the first optical adhesive protective film 62 with the adhesive repellent sprayed facing the bending area WZ. By applying the adhesive repellent before placing the optical adhesive layer 61 on the polarizing layer 21, the adhesive repellent material is avoided from being sprayed directly onto the polarizing layer 21, thus preventing the presence of adhesive repellent between the protective adhesive 30 and the polarizing layer 21. This ensures a tight bond between the protective adhesive 30 and the polarizing layer 21, reducing the risk of tearing of the protective adhesive 30 during subsequent bending.

[0081] In step S400, a protective adhesive is applied to the side of the polarization layer on the display substrate near the bending area. The protective adhesive covers the bending area and at least part of the display area, and the protective adhesive is cured to form a protective layer.

[0082] Specifically, such as Figure 18 As shown, a protective adhesive 30 is coated on the side of the polarizing layer 21 on the display substrate 10 near the bending region WZ, and the protective adhesive 30 covers the bending region WZ and at least part of the display region AA.

[0083] Among them, such as Figure 18 As shown, the protective adhesive 30 fills the gap between the portion of the optical adhesive layer 61 that extends beyond the polarizing layer 21 and the display substrate 10.

[0084] Typically, to improve the strength of the bent portion on the display substrate 10, a protective material is coated onto the bent area WZ to enhance its strength. This protective material is, for example, MCL (Micro Coating Layer) adhesive. Because MCL adhesive is fluid before curing, conventional processes can cause it to exhibit a suction effect with adjacent film layers, resulting in MCL steps.

[0085] In this application, since the optical adhesive layer 61 and the first optical adhesive protective film 62 are sprayed with a repellent agent on the side facing the bending area WZ, the siphon effect between the protective adhesive 30 and the optical adhesive layer 61 and the first optical adhesive protective film 62 is improved when the protective adhesive 30 is applied, thus preventing the protective adhesive 30 from being siphoned onto the first optical adhesive protective film 62.

[0086] Further, since the optical adhesive layer 61 and the first optical adhesive protective film 62 are arranged after the protective adhesive 30 is coated, the height of the functional film layer (polarizing layer 21 + optical adhesive layer 61 + first optical adhesive protective film 62) is relatively increased, so that it is more difficult for the protective adhesive 30 to be siphoned onto the first optical adhesive protective film 62.

[0087] In addition, even if the protective adhesive 30 is siphoned onto the first optical adhesive protective film 62, since the optical adhesive layer 61 exceeds the polarizing layer 21, the step generated by siphoning of the protective layer is relatively closer to the side of the bending area WZ of the polarizing layer 21, that is, the bubble is farther away from the display area AA, and is more likely to be hidden below the ink of the cover layer.

[0088] Specifically, after the protective adhesive 30 is coated on the side of the polarizing layer 21 close to the bending area WZ of the display substrate 10, the coated protective adhesive 30 is then subjected to a curing treatment, and the protective layer is formed after the curing treatment. The curing treatment can be a photocuring treatment process or a high-temperature curing treatment process, and the corresponding curing treatment process is selected according to the coated protective adhesive 30, which is not limited in the present disclosure.

[0089] The display substrate 10 further includes a binding area BD located on both sides of the bending area WZ with the display area AA, and the protective layer covers the bending area WZ and at least part of the display area AA and at least part of the binding area BD, so as to improve the protection effect of the bending area WZ and achieve the enhancement of the strength of the bending area WZ.

[0090] The display substrate 10 is bound and connected with a chip on film (COF) through the binding area BD, and a chip (IC) can be arranged on the binding area BD.

[0091] Specifically, after the protective layer is formed, the first optical adhesive protective film 62 on the optical adhesive layer 61 can be removed, and then the cover layer is attached to the optical adhesive layer 61.

[0092] The cover layer is, for example, a glass cover (CG).

[0093] It should be noted that although the steps of the method in the present disclosure are described in a specific order in the accompanying drawings, this does not require or imply that the steps must be performed in this specific order, or that all the steps shown must be performed to achieve the desired results. In addition or alternatively, some steps can be omitted, a plurality of steps can be combined into one step, and / or one step can be divided into a plurality of steps, etc.

[0094] Embodiments of the present disclosure also provide a display panel manufactured by the manufacturing method of the above-mentioned embodiments. The display panel can be an organic light emitting display panel, of course, can also be a liquid crystal display panel, and the type thereof is not specially limited herein. The display panel can be used in a watch, a mobile phone, a tablet computer or other terminal device, and the beneficial effects thereof can refer to the beneficial effects of the above-mentioned manufacturing method, and will not be described in detail herein.

[0095] Embodiments of the present disclosure also provide a display device comprising the display panel described above. The display device can be, for example, a watch, a mobile phone, a tablet computer or other terminal device, and the beneficial effects thereof can refer to the beneficial effects of the above-mentioned manufacturing method, and will not be described in detail herein.

[0096] Other embodiments of the present disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses or adaptations of the present disclosure following the general principles thereof and including such departures from the present disclosure that come within known use or custom in the art. The specification and examples are to be regarded as illustrative only, and the true scope and spirit of the present disclosure are indicated by the appended claims.

Claims

1. A method for manufacturing a display panel, characterized in that, include: A display substrate is provided, the display substrate including a display area and a bending area; A polarizing layer is formed on the display area on one side of the display substrate; An optical adhesive layer is formed on the side of the polarizing layer opposite to the display substrate; A protective adhesive is applied to the side of the polarizing layer on the display substrate near the bending area, the protective adhesive covering the bending area and at least part of the display area, and the protective adhesive is cured to form a protective layer.

2. The manufacturing method according to claim 1, characterized in that, After forming a polarizing layer on the display area on one side of the display substrate, and before forming an optical adhesive layer on the side of the polarizing layer facing away from the display substrate, the manufacturing method further includes: The display substrate and the polarizing layer are cut to form the display substrate and the polarizing layer of a preset shape.

3. The manufacturing method according to claim 1, characterized in that, The polarizing layer is provided with a polarizing substrate protective film, which is removed before the optical adhesive layer is formed.

4. The manufacturing method according to claim 1, characterized in that, An optical adhesive layer is formed on the side of the polarizing layer opposite to the display substrate, comprising: An optical adhesive substrate is provided, the optical adhesive substrate comprising an optical adhesive layer and a first optical adhesive protective film and a second optical adhesive protective film located on both sides of the optical adhesive layer; A repellent agent is sprayed onto one side of the optical adhesive substrate; Remove the second optical adhesive protective film, place the optical adhesive layer on the side of the polarizing layer away from the display substrate, and make the side of the optical adhesive layer and the first optical adhesive protective film coated with the adhesive repellent face the bending area.

5. The manufacturing method according to claim 4, characterized in that, The optical adhesive layer is flush with the edge of the first optical adhesive protective film facing the bending area.

6. The manufacturing method according to claim 4, characterized in that, After the protective layer is formed, the first optical adhesive protective film is removed.

7. The manufacturing method according to claim 1, characterized in that, In the direction from the display area toward the bending area, the optical adhesive layer extends beyond the polarizing layer, and the protective adhesive fills the gap between the portion of the optical adhesive layer extending beyond the polarizing layer and the display substrate.

8. The manufacturing method according to claim 7, characterized in that, The optical adhesive layer extends beyond the polarizing layer by 0.1 mm to 0.2 mm.

9. The manufacturing method according to claim 1, characterized in that, The manufacturing method further includes: A cover plate layer is attached to the side of the optical adhesive layer and the protective layer that is away from the display substrate.

10. The manufacturing method according to claim 1, characterized in that, The display substrate further includes a bonding area, which is located on both sides of the bending area, along with the display area; the protective layer covers the bending area, at least a portion of the display area, and at least a portion of the bonding area.

11. A display panel, characterized in that, The display panel is manufactured by the manufacturing method according to any one of claims 1 to 10.

12. A display device, characterized in that, Includes the display panel as described in claim 11.

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