Display panel, manufacturing method of display panel and electronic device
Patent Information
- Application Number
- CN202510519185.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-23
- Publication Date
- 2026-10-23
AI Technical Summary
然而，在应用超薄柔性玻璃(Ultra Thin Glass，UTG)的折叠产品中，超薄柔性玻璃(Ultra Thin Glass，UTG)与其他膜层之间存在边缘断差，容易导致失效风险
[0030]本申请实施例提供一种显示面板、显示面板的制作方法及电子设备，通过将柔性玻璃层嵌入保护层，并使保护层覆盖柔性玻璃层的至少部分侧面，可以避免盖板与显示屏体之间存在断差，使柔性玻璃层不受弯折时应力的影响，降低其破裂的风险，从而提高显示面板的可靠性。
Smart Images
Figure CN122967543A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of display panel technology, and more specifically, to a display panel, a method for manufacturing the display panel, and an electronic device. Background Technology
[0002] With the development of display technology, foldable products have gradually become a trend. Among them, ultra-thin flexible glass (UTG) is widely used in foldable products due to its unique physical properties and user experience advantages. However, in foldable products using ultra-thin flexible glass (UTG), there is an edge discontinuity between the ultra-thin flexible glass and other film layers, which can easily lead to failure risks. Summary of the Invention
[0003] In order to overcome the above-mentioned shortcomings in the prior art, the purpose of this application is to provide a display panel, the display panel comprising:
[0004] A display screen body, the display screen body including a light-emitting surface and a backlight surface, the light-emitting surface and the backlight surface being disposed opposite to each other;
[0005] The first adhesive layer is located on the light-emitting surface side of the display screen body;
[0006] A protective layer is located on the side of the first adhesive layer away from the display screen body;
[0007] A flexible glass layer is located on the side of the protective layer away from the display body, and the flexible glass layer is at least partially embedded in the protective layer; the flexible glass layer includes a first side facing the display body, a second side away from the display body, and at least one side connecting the first side and the second side, and the protective layer covers at least a portion of the side of the flexible glass layer;
[0008] The second adhesive layer is located on the side of the flexible glass layer away from the display screen body;
[0009] A cover plate, the cover plate being located on the side of the second adhesive layer away from the flexible glass layer.
[0010] In one possible implementation, the flexible glass layer includes a first surface facing the display body, a second surface away from the display body, and a plurality of side surfaces connecting the first surface and the second surface, and the protective layer covers at least a portion of the first surface and the plurality of side surfaces of the flexible glass layer.
[0011] In one possible implementation, the light transmittance and / or haze of the protective layer are the same as those of the cover plate.
[0012] In one possible implementation, the protective layer has a storage modulus of less than 300 MPa at -20°C.
[0013] In one possible implementation, the material of the protective layer includes a polymer material.
[0014] In one possible implementation, the materials of the first adhesive layer and the second adhesive layer include optical adhesive.
[0015] Another object of this application is to provide a method for manufacturing a display panel, the method comprising:
[0016] A display screen body is provided, the display screen body including a light-emitting surface and a backlight surface, the light-emitting surface and the backlight surface being disposed opposite to each other;
[0017] A first adhesive layer is provided on the light-emitting surface side of the display screen body;
[0018] A protective layer and a flexible glass layer are disposed on the side of the first adhesive layer away from the display screen body, the flexible glass layer being at least partially embedded in the protective layer; the flexible glass layer includes a first surface facing the display screen body, a second surface away from the display screen body, and at least one side surface connecting the first surface and the second surface, the protective layer covering at least a portion of the side surface of the flexible glass layer;
[0019] A second adhesive layer is provided on the side of the flexible glass layer away from the display screen body;
[0020] A cover plate is provided on the side of the second adhesive layer away from the flexible glass layer.
[0021] In one possible implementation, prior to the step of forming a protective layer and a flexible glass layer on the side of the first adhesive layer away from the display body, the method further includes:
[0022] Place the flexible glass layer on the support platform, with the second side of the flexible glass layer facing the support platform;
[0023] The protective layer is applied to the first surface and at least one side surface of the flexible glass layer using a slot coating technique.
[0024] The protective layer is then cured and molded.
[0025] Preferably, the thickness of the protective layer coated on the first surface and at least one side surface of the flexible glass layer ranges from 10 micrometers to 20 micrometers.
[0026] In one possible implementation, after the step of providing a cover plate on the side of the second adhesive layer away from the flexible glass layer, the method further includes:
[0027] The edges of the display panel are cut to remove at least a portion of the display body, the first adhesive layer, the protective layer, the second adhesive layer, and the cover plate from the edges of the display panel.
[0028] Another object of this application is to provide an electronic device, the electronic device including the display panel provided in this application or the display panel manufactured by the method of manufacturing the display panel provided in this application.
[0029] Compared with the prior art, this application has the following beneficial effects:
[0030] This application provides a display panel, a method for manufacturing the display panel, and an electronic device. By embedding a flexible glass layer into a protective layer and having the protective layer cover at least a portion of the sides of the flexible glass layer, a gap between the cover plate and the display screen can be avoided, so that the flexible glass layer is not affected by stress during bending, reducing the risk of breakage and thus improving the reliability of the display panel. Attached Figure Description
[0031] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0032] Figure 1 This is a schematic diagram of the structure of a display panel in the prior art;
[0033] Figure 2 This is one of the structural schematic diagrams of the display panel provided in the embodiments of this application;
[0034] Figure 3 This is a second schematic diagram of the structure of the display panel provided in the embodiments of this application;
[0035] Figure 4 This is the third schematic diagram of the structure of the display panel provided in the embodiments of this application;
[0036] Figure 5 One of the flowcharts illustrating a method for manufacturing a display panel according to an embodiment of this application;
[0037] Figure 6 One of the schematic diagrams illustrating the manufacturing process of the display panel provided in the embodiments of this application;
[0038] Figure 7 A second schematic flowchart illustrating a method for manufacturing a display panel according to an embodiment of this application;
[0039] Figure 8 This is the second schematic diagram illustrating the manufacturing process of the display panel provided in the embodiments of this application.
[0040] Icons: 100 - Display screen body; 110 - Light-emitting surface; 120 - Backlight surface; 200 - First adhesive layer; 300 - Protective layer; 400 - Flexible glass layer; 410 - First side; 420 - Second side; 430 - Side; 500 - Second adhesive layer; 600 - Cover plate; 700 - Supporting platform. Detailed Implementation
[0041] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0042] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
[0043] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0044] In the description of this application, it should be noted that the terms "center," "upper," "lower," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In addition, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0045] It should be noted that, where there is no conflict, different features in the embodiments of this application can be combined with each other.
[0046] The inventor discovered through research that... (Please refer to...) Figure 1In foldable products, due to the material differences between the Ultra Thin Glass (UTG) and the cover plate 600', it is not possible to cut both the Ultra Thin Glass (UTG) and the cover plate 600' simultaneously when cutting the edge of the display panel. Therefore, there will be a gap between the cover plate 600' and the display body 100', which can easily lead to delamination or breakage during the testing of the display panel, resulting in the failure of the display panel test.
[0047] In view of this, this embodiment provides a solution that can solve the above problems. The solution provided in this embodiment will be described in detail below.
[0048] Please refer to Figure 2 , Figure 2 Example: A schematic diagram of the structure of the display panel provided in this embodiment. The display panel may include a display screen body 100, a first adhesive layer 200, a protective layer 300, a flexible glass layer 400, a second adhesive layer 500, and a cover plate 600 stacked in sequence.
[0049] The display screen body 100 may include a light-emitting surface 110 and a backlight surface 120, which are disposed opposite to each other. The light-emitting surface 110 can be used to emit light. For example, the shape of the display screen body 100 may be rectangular.
[0050] The first adhesive layer 200 can be located on one side of the light-emitting surface 110 of the display screen body 100, and the first adhesive layer 200 can be used to bond the display screen body 100 and the protective layer 300.
[0051] The protective layer 300 can be located on the side of the first adhesive layer 200 away from the display screen body 100, and the protective layer 300 can be used to protect the flexible glass layer 400.
[0052] In this embodiment, the size of the protective layer 300 can be matched with the size of the display screen body 100, that is, the orthographic projection of the protective layer 300 on the display screen body 100 can completely cover the light-emitting surface 110 of the display screen body 100.
[0053] The flexible glass layer 400 may be located on the side of the protective layer 300 away from the display body 100, and the flexible glass layer 400 may be at least partially embedded in the protective layer 300. The flexible glass layer 400 may include a first surface 410 facing the display body 100, a second surface 420 away from the display body 100, and at least one side surface 430 connecting the first surface 410 and the second surface 420, and the protective layer 300 may cover at least a portion of the side surface 430 of the flexible glass layer 400.
[0054] In this embodiment, the size of the protective layer 300 can be larger than the size of the flexible glass layer 400. That is, the orthographic projection of the protective layer 300 on the display screen body 100 can completely cover the orthographic projection of the flexible glass layer 400 on the display screen body 100, ensuring that it can cover the edge of the flexible glass layer 400. The protective layer 300 can cover only one side 430 of the flexible glass layer 400 and protect that side 430. The flexible glass layer 400 may include ultra-thin flexible glass (UTG), and the thickness of the flexible glass layer 400 can be 30 micrometers to 50 micrometers.
[0055] In the above design, since the flexible glass layer 400 is embedded in the protective layer 300 and the protective layer 300 can cover the side 430 of the flexible glass layer 400, the protective layer 300 can protect the edge of the flexible glass layer 400, so that the flexible glass layer 400 is not affected by the stress when bending, and the risk of its breakage is reduced.
[0056] It should be noted that the protective layer 300 may cover only one side 430 of the flexible glass layer 400, or it may cover multiple sides 430 of the flexible glass layer 400. The specific adjustment can be made according to actual needs, and no specific limitation is made here.
[0057] The second adhesive layer 500 can be located on the side of the flexible glass layer 400 away from the display screen body 100, and the second adhesive layer 500 can be used to bond the flexible glass layer 400 and the cover plate 600.
[0058] The cover plate 600 can be located on the side of the second adhesive layer 500 away from the flexible glass layer 400. The cover plate 600 can be used to cover and protect the flexible glass layer 400, prevent external impacts and scratches, and improve the durability of the display panel.
[0059] In this embodiment, the orthographic projection of the cover plate 600 on the display screen body 100 can completely cover the orthographic projection of the flexible glass layer 400 on the display screen body 100.
[0060] Based on the above design, in the display panel provided in this embodiment, by embedding the flexible glass layer 400 into the protective layer 300 and making the protective layer 300 cover at least part of the side surface 430 of the flexible glass layer 400, a gap between the cover plate 600 and the display screen body 100 can be avoided, so that the flexible glass layer 400 is not affected by the stress when bending, reducing the risk of its breakage, thereby improving the reliability of the display panel.
[0061] In one possible implementation, please refer to Figure 3The flexible glass layer 400 may include a first surface 410 facing the display body 100, a second surface 420 away from the display body 100, and a plurality of side surfaces 430 connecting the first surface 410 and the second surface 420. The protective layer 300 covers at least a portion of the first surface 410 and the plurality of side surfaces 430 of the flexible glass layer 400.
[0062] In this embodiment, the protective layer 300 can completely cover the first surface 410 and multiple side surfaces 430 of the flexible glass layer 400, and expose the second surface 420 of the flexible glass layer 400. The surface of the protective layer 300 away from the display screen body 100 can be flush with the second surface 420 of the flexible glass layer 400. That is, in the direction perpendicular to the display screen body 100, the height of the surface of the protective layer 300 away from the display screen body 100 relative to the first adhesive layer 200 can be equal to the height of the second surface 420 of the flexible glass layer 400 relative to the first adhesive layer 200. Please refer to... Figure 4 If the height of the surface of the protective layer 300 away from the display body 100 relative to the first adhesive layer 200 is less than the height of the second surface 420 of the flexible glass layer 400 relative to the first adhesive layer 200, then the thickness of the second adhesive layer 500 needs to be increased to ensure a tight bond between the cover plate 600 and the flexible glass layer 400. Therefore, by setting the surface of the protective layer 300 away from the display body 100 to be flush with the second surface 420 of the flexible glass layer 400, the thickness of the second adhesive layer 500 can be reduced, thereby reducing the overall thickness of the display panel and improving the bending performance of the display panel.
[0063] For example, the flexible glass layer 400 can be in the shape of a cuboid, and the protective layer 300 can completely cover one bottom surface and four sides 430 of the cuboid.
[0064] In the above design, by setting a protective layer 300 to completely cover the first surface 410 and multiple sides 430 of the flexible glass layer 400, it is possible to ensure that the flexible glass layer 400 is protected during bending, effectively preventing cracks caused by edge stress concentration and extending the service life of the display panel.
[0065] In addition, by embedding the flexible glass layer 400 into the protective layer 300, the flexible glass layer 400 is covered by the protective layer 300, which can increase the adhesion between the flexible glass layer 400 and other film layers, thereby reducing the risk of delamination during the testing process.
[0066] In one possible implementation, the light transmittance and / or haze of the protective layer 300 may be the same as that of the cover plate 600.
[0067] In this embodiment, both the protective layer 300 and the cover plate 600 have a light transmittance greater than 90%, and both have a haze of less than 1%. This ensures that light emitted from the light-emitting surface 110 of the display screen 100 can pass through the protective layer 300 and the cover plate 600, reducing light loss and improving display performance. Furthermore, the consistent optical properties of the protective layer 300 and the cover plate 600 result in more uniform light propagation, further enhancing the user experience.
[0068] In some cases, the material of the cover plate 600 can be colorless polyimide (CPI), which has high light transmittance and low haze.
[0069] It should be noted that the material of the cover plate 600 is not limited to transparent polyimide (CPI), but can also be other materials with high light transmittance and low haze, such as optical grade polycarbonate (PC), etc., without specific limitations here.
[0070] In one possible implementation, the energy storage modulus of the protective layer 300 at -20°C can be less than 300 MPa.
[0071] In this embodiment, the energy storage modulus represents the ability of the protective layer 300 to store elastic deformation energy under dynamic mechanical loads, reflecting its rigidity or elasticity. A lower energy storage modulus indicates better flexibility of the protective layer 300 and a stronger ability to adapt to low-temperature environments. The energy storage modulus of the protective layer 300 at low temperatures (-20°C) is less than 300 MPa, indicating that it still possesses good flexibility and is not prone to brittleness at low temperatures, thus ensuring the stability and reliability of the display panel at low temperatures (-20°C). Therefore, when the display panel is subjected to bending tests at low temperatures (-20°C), its failure risk can be reduced.
[0072] In one possible implementation, the protective layer 300 may be made of a polymer material. In some examples, the material of the protective layer 300 may be highly transparent thermoplastic polyurethane (TPU). Transparent thermoplastic polyurethane (TPU) has excellent flexibility and can maintain good performance in low-temperature environments, reducing material deformation caused by temperature changes, thereby ensuring the stability and reliability of the display panel under extreme temperatures. Furthermore, transparent thermoplastic polyurethane also has high light transmittance and low haze characteristics, which can ensure light transmission efficiency and effectively improve the optical performance of the display panel.
[0073] It should be noted that the material of the protective layer 300 is not limited to highly transparent thermoplastic polyurethanes (TPU), but can also be other transparent polymer materials with the same properties, such as polycarbonate (PC), etc., without specific limitations here.
[0074] In one possible implementation, the materials of the first adhesive layer 200 and the second adhesive layer 500 may include optically clear adhesive (OCA).
[0075] In this embodiment, the first adhesive layer 200 and the second adhesive layer 500 are made of the same material. Both the first adhesive layer 200 and the second adhesive layer 500 can be transparent materials with high light transmittance. For example, both the first adhesive layer 200 and the second adhesive layer 500 can be optically clear adhesive (OCA). Optically clear adhesive (OCA) has high light transmittance, ensuring that light emitted from the light-emitting surface 110 of the display panel 100 can pass through the first adhesive layer 200 and the second adhesive layer 500, avoiding light path loss. Simultaneously, optically clear adhesive (OCA) has high bonding strength, effectively achieving adhesion between the film layers, fixing the materials of each layer, preventing interlayer separation, and further improving the overall structural stability of the display panel.
[0076] It should be noted that the materials of the first adhesive layer 200 and the second adhesive layer 500 are not limited to optically clear adhesive (OCA), but can also be other transparent adhesive materials with high light transmittance and strong adhesion, such as acrylic adhesives, etc., which are not specifically limited here.
[0077] This application also provides a method for manufacturing a display panel, please refer to... Figure 5 The method for manufacturing a display panel may include the following steps.
[0078] Step S110: A display screen body 100 is provided, the display screen body 100 includes a light-emitting surface 110 and a backlight surface 120, the light-emitting surface 110 and the backlight surface 120 are arranged opposite to each other.
[0079] In this embodiment, please refer to Figure 6 The display screen body 100 may include a light-emitting surface 110 and a backlight surface 120 disposed opposite to each other, and the light-emitting surface 110 may be used to emit light. For example, the shape of the display screen body 100 may be rectangular.
[0080] Step S120: A first adhesive layer 200 is provided on one side of the light-emitting surface 110 of the display screen body 100.
[0081] In this embodiment, please refer again. Figure 6 In step S110, a first adhesive layer 200 can be applied to the light-emitting surface 110 of the display body 100, and the application should be uniform so that the thickness of the first adhesive layer 200 is consistent in the direction perpendicular to the display body 100, thereby ensuring that the first adhesive layer 200 can effectively bond the display body 100 and the protective layer 300.
[0082] It should be noted that during the coating process of the first adhesive layer 200, the ambient temperature and humidity need to be controlled to prevent the formation of bubbles and improve the display effect.
[0083] The first adhesive layer 200 can be a transparent material with high light transmittance. For example, the first adhesive layer 200 can be optically clear adhesive (OCA). Optically clear adhesive (OCA) has high light transmittance, which can ensure that light emitted from the light-emitting surface 110 of the display body 100 can pass through the first adhesive layer 200, avoiding light path loss. At the same time, optically clear adhesive (OCA) has high bonding strength, which can effectively achieve the bonding between the display body 100 and the protective layer 300, prevent interlayer separation, and further improve the overall structural stability of the display panel.
[0084] In step S130, a protective layer 300 and a flexible glass layer 400 are disposed on the side of the first adhesive layer 200 away from the display screen body 100, wherein the flexible glass layer 400 is at least partially embedded in the protective layer 300; the flexible glass layer 400 includes a first surface 410 facing the display screen body 100, a second surface 420 away from the display screen body 100, and at least one side surface 430 connecting the first surface 410 and the second surface 420, wherein the protective layer 300 covers at least a portion of the side surface 430 of the flexible glass layer 400.
[0085] In this embodiment, please refer again. Figure 6A protective layer 300 and a flexible glass layer 400 can be provided on the side of the first adhesive layer 200 set in step S120 away from the display screen body 100. The protective layer 300 can cover only one side 430 of the flexible glass layer 400, or it can cover multiple sides 430 of the flexible glass layer 400, which can be adjusted according to actual needs. The protective layer 300 can be used to protect the edge of the flexible glass layer 400, so that the flexible glass layer 400 is not affected by the stress when bent, reducing its risk of breakage. The flexible glass layer 400 may include ultra-thin flexible glass (UTG), and the thickness of the flexible glass layer 400 can be 30 micrometers to 50 micrometers.
[0086] Specifically, the surface of the protective layer 300 away from the display body 100 can be flush with the second surface 420 of the flexible glass layer 400. That is, in the direction perpendicular to the display body 100, the height of the surface of the protective layer 300 away from the display body 100 relative to the first adhesive layer 200 can be equal to the height of the second surface 420 of the flexible glass layer 400 relative to the first adhesive layer 200. If the height of the surface of the protective layer 300 away from the display body 100 relative to the first adhesive layer 200 is less than the height of the second surface 420 of the flexible glass layer 400 relative to the first adhesive layer 200, then the thickness of the second adhesive layer 500 needs to be increased to ensure a tight bond between the cover plate 600 and the flexible glass layer 400. Therefore, by setting the surface of the protective layer 300 away from the display body 100 to be flush with the second surface 420 of the flexible glass layer 400, the thickness of the second adhesive layer 500 can be reduced, thereby reducing the overall thickness of the display panel and improving the bending performance of the display panel.
[0087] In addition, the size of the protective layer 300 can be larger than that of the flexible glass layer 400 and match the size of the display body 100. This facilitates subsequent edge cutting and ensures the stability of the overall structure.
[0088] To ensure that light emitted from the light-emitting surface 110 of the display panel 100 can pass through the protective layer 300, the protective layer 300 can be made of a material with high light transmittance and low haze. For example, the light transmittance of the protective layer 300 can be greater than 90%, and the haze can be less than 1%, thereby reducing light loss and improving display performance. Furthermore, to ensure the stability and reliability of the display panel under low-temperature conditions (-20℃), the energy storage modulus of the protective layer 300 at -20℃ can be less than 300MPa. This allows the protective layer 300 to maintain good flexibility and prevent brittleness under low-temperature conditions, reducing the risk of failure when the display panel is subjected to bending tests at -20℃. In some cases, the protective layer 300 can be made of highly transparent thermoplastic polyurethanes (TPU). TPU not only possesses excellent light transmittance, ensuring efficient light transmission and effectively improving the optical performance of the display panel, but also exhibits excellent flexibility, maintaining good performance in low-temperature environments and ensuring the stability and reliability of the display panel at low temperatures (-20°C).
[0089] In the above design, since the flexible glass layer 400 is embedded in the protective layer 300 and the protective layer 300 can cover the side surface 430 of the flexible glass layer 400, the protective layer 300 can protect the edges of the flexible glass layer 400, preventing it from being affected by stress during bending and reducing the risk of breakage. Furthermore, the protective layer 300 can also increase the adhesion between the flexible glass layer 400 and other film layers, thereby reducing the risk of delamination during testing.
[0090] Step S140: A second adhesive layer 500 is provided on the side of the flexible glass layer 400 away from the display screen body 100.
[0091] In this embodiment, please refer again. Figure 6 A second adhesive layer 500 can be coated on the side of the flexible glass layer 400 away from the display screen body 100 set in step S130. The thickness of the second adhesive layer 500 in the direction perpendicular to the display screen body 100 can be adjusted according to the height difference between the protective layer 300 and the flexible glass layer 400, so that the protective layer 300 can be tightly bonded to the flexible glass layer 400.
[0092] The material of the second adhesive layer 500 can be the same as that of the first adhesive layer 200. In some examples, the material of the second adhesive layer 500 can also be optically clear adhesive (OCA). Optically clear adhesive (OCA) has high light transmittance, which can ensure that light emitted from the light-emitting surface 110 of the display body 100 can pass through the second adhesive layer 500, avoiding light path loss. At the same time, optically clear adhesive (OCA) has high bonding strength, which can effectively achieve the bonding between the flexible glass and the cover plate 600, prevent interlayer separation, and further improve the overall structural stability of the display panel.
[0093] Step S150: A cover plate 600 is provided on the side of the second adhesive layer 500 away from the flexible glass layer 400.
[0094] In this embodiment, please refer again. Figure 6 The cover plate 600 can be attached to the side of the second adhesive layer 500 set in step S140 away from the flexible glass layer 400. The orthographic projection of the cover plate 600 on the display screen body 100 can completely cover the orthographic projection of the flexible glass layer 400 on the display screen body 100. The cover plate 600 can protect the flexible glass layer 400, prevent external impacts and impurities from entering, and extend the service life of the display panel.
[0095] The cover plate 600 has a light transmittance of greater than 90% and a haze of less than 1%. This ensures that light emitted from the light-emitting surface 110 of the display screen 100 can pass through the cover plate 600, reducing light loss and improving display performance. In some cases, the cover plate 600 can be made of transparent polyimide (Colorless Polyimide, CPI).
[0096] Based on the above design, by setting a protective layer 300 and a flexible glass layer 400 on the side of the first adhesive layer 200 away from the display screen body 100, and embedding the flexible glass layer 400 into the protective layer 300, so that the protective layer 300 covers at least part of the side surface 430 of the flexible glass layer 400, it is possible to avoid a gap between the cover plate 600 and the display screen body 100, so that the flexible glass layer 400 is not affected by stress when bent, reducing its risk of breakage, thereby improving the reliability of the display panel.
[0097] In one possible implementation, please refer to Figure 7 Before the step of setting the protective layer 300 and the flexible glass layer 400 on the side of the first adhesive layer 200 away from the display body 100, the method of manufacturing the display panel may also include the following steps.
[0098] Step S210: Place the flexible glass layer 400 on the support platform 700, with the second surface 420 of the flexible glass layer 400 facing the support platform 700.
[0099] In this embodiment, the flexible glass layer 400 can be placed on the support platform 700, with the second surface 420 of the flexible glass layer 400 in contact with the support platform 700. Both the first surface 410 and the second surface 420 of the flexible glass layer 400, which are disposed opposite to each other, are provided with a base film. The base film can completely cover the first surface 410 and the second surface 420 of the flexible glass layer 400, and can be used to protect the flexible glass layer 400 during processing, preventing scratches and contamination. When the flexible glass layer 400 is placed on the support platform 700, the base film located on the second surface 420 of the flexible glass layer 400 can contact the surface of the support platform 700.
[0100] Step S220: Apply the protective layer 300 to the first surface 410 and at least one side surface 430 of the flexible glass layer 400 using a slot coating technique.
[0101] In this embodiment, please refer to Figure 8 After the flexible glass layer 400 is placed on the support platform 700, the bottom film of the first surface 410 of the flexible glass layer 400 can be removed. Then, a protective layer material can be applied to the first surface 410 of the flexible glass layer 400 using a slot coating technique. The fluidity of the protective layer material can be used to cover at least one side 430 of the flexible glass layer 400, thereby protecting the edge of the flexible glass layer 400 from external forces and reducing the risk of breakage.
[0102] Slot coating technology offers high-precision coating capabilities and high material utilization, minimizing waste of protective layer material. Furthermore, slot coating does not require contact with the object surface, effectively preventing contamination. When applying protective layer material using slot coating technology, slot coating equipment can be used. This equipment mainly consists of a feeding unit, a coating unit, nozzles, a control system, and a nozzle fixing device. The feeding unit may include a storage tank, a delivery pump, and a filter. The coating unit may include a valve system for controlling the coating gap, a pressure control system, and a coating head. The nozzle can be made of stainless steel and is used to quickly and accurately spray liquid onto the target location. The control system can precisely control the coating thickness and coating distance using computer or other control equipment, and determine the spray volume based on the required coating thickness. The nozzle fixing device is used to fix the nozzle position. During slot coating, the protective layer material is extruded from the nozzle under pressure and transferred to the first surface 410 of the flexible glass layer 400, forming the protective layer 300.
[0103] Specifically, when coating the first surface 410 of the flexible glass layer 400 with a protective layer material, the thickness of the coated protective layer material can range from 10 micrometers to 20 micrometers. This allows the protective layer 300 to protect the side surface 430 of the flexible glass layer 400 and also prevents a decrease in display performance due to excessive thickness of the protective layer 300. For example, the thickness of the coated protective layer material can include 10 micrometers, 12 micrometers, 13 micrometers, 14 micrometers, 15 micrometers, 16 micrometers, 17 micrometers, 18 micrometers, 19 micrometers, and 20 micrometers, etc.
[0104] Step S230: The protective layer 300 is cured and molded.
[0105] In this embodiment, the protective layer 300 formed in step S220 can be cured and molded so that the protective layer 300 covers the first surface 410 and edge of the flexible glass layer 400.
[0106] Specifically, during the curing and molding process of the protective layer 300, the curing and molding process can be carried out by either static waiting or baking, depending on the specific material of the protective layer 300.
[0107] It should be noted that the curing and molding process of the protective layer 300 is not limited to static waiting or baking. Various methods such as ultraviolet irradiation and hot air circulation can also be used. The specific method can be selected according to the material of the protective layer 300, and no specific limitation is made here.
[0108] After the protective layer 300 is cured and molded, the protective layer 300 and the flexible glass layer 400 can be first bonded to the display screen body 100, and then the cover plate 600 can be bonded to the flexible glass layer 400. When bonding the cover plate 600 to the flexible glass layer 400, the bottom film on the second side 420 of the flexible glass layer 400 can be removed first.
[0109] In one possible implementation, after the cover plate 600 is provided on the side of the second adhesive layer 500 away from the flexible glass layer 400, the edge of the display panel can be cut to remove at least a portion of the display body 100, the first adhesive layer 200, the protective layer 300, the second adhesive layer 500, and the cover plate 600 from the edge of the display panel.
[0110] In this embodiment, the edge area of the display panel can be provided with a cutting line. When cutting the edge of the display panel, the cutting can be carried out along the cutting line in one piece to ensure that the cutting edge is neat.
[0111] For example, the edges of the display panel can be cut using laser cutting.
[0112] The cutting line does not intersect with the flexible glass layer 400. Therefore, when cutting the edge of the display panel, the flexible glass layer 400 will not be cut. Only the edges of the display body 100, the first adhesive layer 200, the protective layer 300, the second adhesive layer 500, and the cover plate 600 will be cut. This ensures that the flexible glass layer 400 will not be damaged during the cutting process and avoids the gap between the cover plate 600 and the display body 100, preventing the display panel from failing during bending.
[0113] After cutting, the display panel can be subjected to a bending test to verify its bending resistance. Compared with the constant-speed dynamic bending in the prior art, this embodiment can use variable-frequency bending and intermittent bending to simulate various bending situations in actual use, improving the comprehensiveness and accuracy of the test, thereby more comprehensively evaluating the reliability of the display panel.
[0114] This application also provides an electronic device, which may include the display panel provided in this application or a display panel manufactured using the method described in this application. The electronic device may include devices with display functions such as monitors, video walls, mobile phones, tablets, laptops, and televisions.
[0115] In summary, the embodiments of this application provide a display panel, a method for manufacturing the display panel, and an electronic device. By embedding a flexible glass layer into a protective layer and having the protective layer cover at least a portion of the sides of the flexible glass layer, a gap between the cover plate and the display screen can be avoided, the flexible glass layer is not affected by stress during bending, and its risk of breakage is reduced, thereby improving the reliability of the display panel.
[0116] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0117] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.
Claims
1. A display panel, characterized in that, The display panel includes: A display screen body, the display screen body including a light-emitting surface and a backlight surface, the light-emitting surface and the backlight surface being disposed opposite to each other; The first adhesive layer is located on the light-emitting surface side of the display screen body; A protective layer is located on the side of the first adhesive layer away from the display screen body; A flexible glass layer is located on the side of the protective layer away from the display body, and the flexible glass layer is at least partially embedded in the protective layer; the flexible glass layer includes a first side facing the display body, a second side away from the display body, and at least one side connecting the first side and the second side, and the protective layer covers at least a portion of the side of the flexible glass layer; The second adhesive layer is located on the side of the flexible glass layer away from the display screen body; A cover plate, the cover plate being located on the side of the second adhesive layer away from the flexible glass layer.
2. The display panel according to claim 1, characterized in that, The flexible glass layer includes a first surface facing the display body, a second surface away from the display body, and a plurality of side surfaces connecting the first surface and the second surface, and the protective layer covers at least a portion of the first surface and the plurality of side surfaces of the flexible glass layer.
3. The display panel according to claim 1, characterized in that, The light transmittance and / or haze of the protective layer are the same as those of the cover plate.
4. The display panel according to claim 1, characterized in that, The energy storage modulus of the protective layer at -20°C is less than 300 MPa.
5. The display panel according to claim 1, characterized in that, The protective layer is made of polymer materials.
6. The display panel according to claim 1, characterized in that, The materials of the first adhesive layer and the second adhesive layer include optical adhesive.
7. A method for manufacturing a display panel, characterized in that, The method includes: A display screen body is provided, the display screen body including a light-emitting surface and a backlight surface, the light-emitting surface and the backlight surface being disposed opposite to each other; A first adhesive layer is provided on the light-emitting surface side of the display screen body; A protective layer and a flexible glass layer are disposed on the side of the first adhesive layer away from the display screen body, the flexible glass layer being at least partially embedded in the protective layer; the flexible glass layer includes a first surface facing the display screen body, a second surface away from the display screen body, and at least one side surface connecting the first surface and the second surface, the protective layer covering at least a portion of the side surface of the flexible glass layer; A second adhesive layer is provided on the side of the flexible glass layer away from the display screen body; A cover plate is provided on the side of the second adhesive layer away from the flexible glass layer.
8. The method for manufacturing a display panel according to claim 7, characterized in that, Before the step of depositing the protective layer and flexible glass layer on the side of the first adhesive layer away from the display body, the method further includes: Place the flexible glass layer on the support platform, with the second side of the flexible glass layer facing the support platform; The protective layer is applied to the first surface and at least one side surface of the flexible glass layer using a slot coating technique. The protective layer is then cured and molded. Preferably, the thickness of the protective layer coated on the first surface and at least one side surface of the flexible glass layer ranges from 10 micrometers to 20 micrometers.
9. The method for manufacturing a display panel according to claim 7, characterized in that, After the step of providing a cover plate on the side of the second adhesive layer away from the flexible glass layer, the method further includes: The edges of the display panel are cut to remove at least a portion of the display body, the first adhesive layer, the protective layer, the second adhesive layer, and the cover plate from the edges of the display panel.
10. An electronic device, characterized in that, The electronic device includes a display panel manufactured by the method of manufacturing the display panel according to any one of claims 1-6 or any one of claims 7-9.