Display module, preparation method of display module and display device

Abstract

The application discloses a display module, a preparation method of the display module and a display device. The display module comprises a display panel, a cover plate and a buffer layer. The display panel comprises a light-out side and a backlight side arranged oppositely along the thickness direction of the display panel. The display panel further comprises a main area and a plurality of corner areas. The main area comprises a plurality of curved edges, which are curved from the light-out side to the backlight side. The corner areas are regions where adjacent curved edges intersect, and the corner areas are also curved from the light-out side to the backlight side. The cover plate is arranged on the light-out side of the display panel and is a curved cover plate. The buffer layer comprises a first buffer part and a second buffer part. The first buffer part is attached to the main area on the backlight side of the display panel, and the second buffer part is attached to the corner area on the backlight side of the display panel. The thickness of the first buffer part is the same as that of the second buffer part, and there is a gap between the first buffer part and the second buffer part, thereby improving the performance of the display panel.

Description

Technical Field

[0001] This application belongs to the field of display technology, and in particular relates to a display module, a method for preparing the display module, and a display device. Background Technology

[0002] Organic light-emitting diode (OLED) and flat panel display devices based on light-emitting diode (LED) technologies are widely used in various consumer electronics products such as mobile phones, televisions, laptops, and desktop computers due to their advantages such as high image quality, energy saving, thin body and wide range of applications, becoming the mainstream of display devices.

[0003] However, the performance of current OLED display products needs to be improved. Summary of the Invention

[0004] The purpose of this application is to provide a display module, a method for manufacturing the display module, and a display device that can improve the performance of the display panel.

[0005] The first aspect of this application provides a display module, which includes a display panel, a cover plate, and a buffer layer. The display panel includes a light-emitting side and a backlight side disposed opposite to each other along its thickness direction. The display panel also includes a main body area and multiple corner areas. The main body area includes multiple curved edges, which are curved from the light-emitting side to the backlight side. The corner areas are the areas where adjacent curved edges intersect, and the corner areas are also curved from the light-emitting side to the backlight side. The cover plate is disposed on the light-emitting side of the display panel and is a curved cover plate. The buffer layer includes a first buffer portion and a second buffer portion. The first buffer portion is attached to the main body area on the backlight side of the display panel, and the second buffer portion is attached to the corner areas on the backlight side of the display panel. The first buffer portion and the second buffer portion have the same thickness, and there is a gap between the first buffer portion and the second buffer portion.

[0006] In some embodiments, there are multiple second buffer portions, and the multiple second buffer portions are respectively attached to multiple corner regions in a one-to-one correspondence.

[0007] In some embodiments, the display module further includes a polarizing layer disposed between the display panel and the cover plate.

[0008] In some embodiments, the display module further includes an optical adhesive layer disposed between the display panel and the cover plate.

[0009] In some embodiments, the optical adhesive layer includes a first optical adhesive portion and a second optical adhesive portion, wherein the first optical adhesive portion is attached to the main body area of ​​the display panel and the second optical adhesive portion is attached to the corner area of ​​the display panel.

[0010] Preferably, the thickness of the second optical adhesive portion gradually decreases in the direction away from the first optical adhesive portion.

[0011] In some embodiments, the display module further includes a support layer disposed between the display panel and the buffer layer.

[0012] Secondly, this application also provides a method for manufacturing a display module, comprising the following steps:

[0013] A second buffer portion is attached to the corner area of ​​the backlight side of the display panel; wherein, the display panel includes a light-emitting side and a backlight side arranged opposite to each other along its own thickness direction, the display panel also includes a main body area and multiple corner areas, the main body area includes multiple curved edges, the curved edges are curved in the direction from the light-emitting side to the backlight side, the corner areas are the areas where adjacent curved edges intersect, and the corner areas are also curved in the direction from the light-emitting side to the backlight side;

[0014] A cover plate is attached to the light-emitting side of the display panel; the cover plate is a curved cover plate.

[0015] A first buffer portion is attached to the main body area on the backlight side of the display panel; wherein the first buffer portion and the second buffer portion have the same thickness and there is a gap between the first buffer portion and the second buffer portion.

[0016] In some embodiments, the step of attaching the second buffer portion to the corner region on the backlight side of the display panel further includes:

[0017] The edge of the carrier membrane is clamped using a clamping structure;

[0018] The display panel is placed on the carrier film.

[0019] In some embodiments, the clamping structure includes a first clamping member and a second clamping member, the first clamping member being used to clamp the edge of the main body area of ​​the display panel, and the second clamping member being used to clamp the corner area of ​​the display panel.

[0020] Preferably, the clamping structure further includes a control device and a drive device connected to each other. The drive device is connected to the second clamping member and is used to drive the second clamping member to move along the thickness direction of the display panel.

[0021] Preferably, the driving device includes multiple driving components, each of which is connected to the second clamping component in a corresponding manner.

[0022] Thirdly, embodiments of this application also provide a display device, including a display module as described in any of the above embodiments or a display module prepared by the preparation method of any of the above embodiments.

[0023] This application provides a display module, a method for manufacturing the display module, and a display device. By attaching a first buffer portion to the main body area of ​​the backlight side of the display panel and a second buffer portion to the corner area of ​​the backlight side of the display panel, the corner area is also supported by the first buffer portion. Furthermore, the first and second buffer portions have the same thickness and a gap exists between them. When the display module is attached to the housing, the second buffer portion can reduce the stress in the corner area, thereby preventing wrinkles from appearing in the corner area of ​​the display panel, which is beneficial for full-screen display and improves the performance of the display panel. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a partial structural schematic diagram of a display module provided in some embodiments of this application;

[0026] Figure 2 Top view of a display panel provided in some embodiments of this application;

[0027] Figure 3 A cross-sectional schematic diagram of a display panel provided in some embodiments of this application;

[0028] Figure 4 This is a top view of a display module provided in some embodiments of this application;

[0029] Figures 5-7 This is a schematic diagram illustrating the manufacturing process of the display module provided in some embodiments of this application;

[0030] Figure 8 Schematic diagrams of the carrier membrane and clamping structure provided in some embodiments of this application;

[0031] Figure 9 This is a schematic diagram of a carrier membrane, clamping structure, and driving device provided in some embodiments of this application.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1000, Display module; 100, Display panel; S1, Light-emitting side; S2, Backlight side; AA, Main body area; AA1, Curved edge; NA, Corner area; 10, Substrate; 11, Substrate; 12, Driving circuit layer; 20, Light-emitting device layer; 21, Light-emitting unit; 22, Pixel definition layer; 221, Pixel limiting part; 222, Pixel opening; 30, Encapsulation layer; 31, First encapsulation sub-layer; 32, Second encapsulation sub-layer; 33, Third encapsulation sub-layer; 40, Optical adhesive layer; 41, First optical adhesive part; 42, Second optical adhesive part; 200, Cover plate; 300, Buffer layer; 310, First buffer part; 320, Second buffer part; 400, Polarizing layer; 500, Support layer; 600, Clamping structure; 610, First clamping member; 620, Second clamping member; 700, Carrier film; 800, Driving device; 810, Driving component. Detailed Implementation

[0034] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to illustrate the principles of this application by way of example, but should not be used to limit the scope of this application, that is, this application is not limited to the described embodiments.

[0035] In the description of this application, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationships, are 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, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. "Vertical" is not vertical in the strict sense, but within the allowable tolerance range. "Parallel" is not parallel in the strict sense, but within the allowable tolerance range.

[0036] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0037] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. It should also be noted in the description of this application that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0038] With the continuous development of modern display technology, curved screens, with their unique visual experience and stylish appearance, have gradually become a mainstream trend in the display field. However, curved screen display panels face numerous technical challenges in their manufacturing process. For curved screen panels, the corner areas are subject to stress during lamination, leading to material structural instability and wrinkling in these areas. This results in parts of the corners not displaying, preventing full-screen display. The wrinkling problem at the corners of curved screens severely restricts the performance improvement of display panels and the realization of full-screen display, thus reducing the overall performance of the display panel.

[0039] This application provides a display module, which can be an organic light-emitting diode (OLED) display module, or other types of display modules, such as micro light-emitting diode (Micro-LED) or quantum light-emitting diode (QLED) display modules.

[0040] Please refer to the following: Figure 1 and Figure 2The first aspect of this application provides a display module 1000, which includes a display panel 100, a cover plate 200, and a buffer layer 300. The display panel 100 includes a light-emitting side S1 and a backlight side S2 disposed opposite to each other along its thickness direction. The display panel 100 also includes a main body region AA and a plurality of corner regions NA. The main body region AA includes a plurality of curved edges AA1, which are curved from the light-emitting side S1 to the backlight side S2. The corner regions NA are the areas where adjacent curved edges AA1 intersect. The corner regions NA are light-emitting... The side S1 is also curved towards the backlight side S2; the cover plate 200 is disposed on the light-emitting side S1 of the display panel 100, and the cover plate 200 is a curved cover plate 200; the buffer layer 300 includes a first buffer part 310 and a second buffer part 320. The first buffer part 310 is attached to the main body area AA of the backlight side S2 of the display panel 100, and the second buffer part 320 is attached to the corner area NA of the backlight side S2 of the display panel 100. The first buffer part 310 and the second buffer part 320 have the same thickness, and there is a gap between the first buffer part 310 and the second buffer part 320.

[0041] The display panel 100 is divided into a light-emitting side S1 and a backlight side S2 along its thickness direction. The light-emitting side S1 is responsible for presenting image information to the user, while the backlight side S2 provides the light source and support for the display. The panel also includes a main area AA and a corner area NA. The multiple curved edges AA1 of the main area AA curve from the light-emitting side S1 to the backlight side S2. This curved design can widen the user's viewing angle and enhance the visual immersion, but it also makes the panel more prone to stress during the bonding process. As the intersection of adjacent curved edges AA1, the corner area NA experiences more pronounced stress concentration. In traditional display modules 1000, the corner area NA lacks effective support and stress dispersion mechanisms, making it highly susceptible to material structural instability, which can lead to wrinkles and cause some areas to malfunction.

[0042] like Figure 3As shown, the display panel 100 generally includes a substrate 10, a light-emitting device layer 20, and an encapsulation layer 30 from the backlight side S2 to the light-emitting side S1. The substrate 10 includes a substrate 11 and a driving circuit layer 12 disposed on the substrate 11. The substrate 11 can be a rigid substrate 11 made of materials such as glass or plastic, or a flexible substrate 11 made of materials such as polyethersulfone (PES), polyacrylate (PAR), polyetherimide (PEI), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyarylate, polyimide (PI), polycarbonate (PC), or cellulose acetate propionate (CAP). The driving circuit layer 12 is provided with a driving circuit for controlling the light emission of the light-emitting device layer 20. The driving circuit layer 12 is generally composed of inorganic film layers such as metal layer, semiconductor layer (active layer) and insulating layer 127. By patterning these inorganic film layers, a driving circuit that controls the light emission of the light-emitting device layer 20 can be formed. There are many ways to implement the specific circuit structure, which will not be described in detail here.

[0043] The light-emitting device layer 20 may include a plurality of spaced-apart light-emitting units 21, which may include light-emitting units 21 of different colors. For example, it may include blue light-emitting units 21, red light-emitting units 21, and green light-emitting units 21 arranged at intervals. In addition, each pixel unit may also have four or more light-emitting units 21, in addition to the above three colors of light-emitting units 21, plus light-emitting units 21 of other colors such as white. Each light-emitting unit 21 includes a first electrode, a light-emitting layer, and a second electrode stacked in sequence, with the first electrode disposed on the substrate 10. The light-emitting layer includes a light-emitting material layer, a hole transport layer, and an electron transport layer, etc. When the first electrode 211 and the second electrode are energized, electrons and holes migrate from the electron transport layer and the hole transport layer to the light-emitting material layer, respectively, and meet in the light-emitting material layer to form excitons that excite the light-emitting molecules, thereby generating visible light to achieve the purpose of display. One of the first electrode and the second electrode can serve as the anode of the light-emitting layer and the other as the cathode of the light-emitting layer. In this embodiment, the first electrode is used as the anode of the light-emitting layer and the second electrode is used as the cathode of the light-emitting layer for illuminating purposes.

[0044] The light-emitting device layer 20 may further include a pixel definition layer 22, which includes a pixel limiting portion 221 and a pixel opening 222 formed by the pixel limiting portion 221, with the light-emitting unit 21 located within the pixel opening 222. The pixel limiting layer can reduce crosstalk between the light-emitting units 21 and improve the display effect of the display panel 100.

[0045] Optionally, the display panel 100 may further include an encapsulation layer 30, which is disposed on the side of the light-emitting device layer 20 facing away from the substrate 10. The encapsulation layer 30 may include a first encapsulation sub-layer 31, a second encapsulation sub-layer 32, and a third encapsulation sub-layer 33 arranged sequentially in a direction away from the substrate 10. The first encapsulation sub-layer 31 and the third encapsulation sub-layer 33 may include inorganic materials such as silicon oxide, silicon nitride, or silicon oxynitride, while the second encapsulation sub-layer 32 may include organic materials. The first encapsulation sub-layer 31 can protect each light-emitting unit 21 from the influence of the external environment (such as air and water), preventing air and moisture from penetrating into the interior of the display panel 100, thus extending the lifespan and stability of the light-emitting unit 21. The first encapsulation sub-layer 31 can also prevent impurities and harmful substances from entering the display panel 100, thereby ensuring the performance and quality of the display panel 100. The organic material of the second encapsulation sub-layer 32 has unique flexibility and good adhesion. Compared with inorganic materials, organic materials can better adapt to the slight deformations that the display panel 100 may undergo in different environments, and will not crack due to bending or thermal expansion and contraction of the panel. The combination of multiple encapsulation film layers, namely the first encapsulation sublayer 31, the second encapsulation sublayer 32, and the third encapsulation sublayer 33, further improves the encapsulation effect of the display panel 100.

[0046] The cover plate 200 in this embodiment is a curved cover plate 200, adapted to the curved shape of the display panel 100. The cover plate 200 has a physical protective function, resisting scratches and impacts during daily use and protecting the display panel 100 from external damage. In terms of bonding process, the curved cover plate 200 is tightly bonded to the display panel 100, which helps to reduce optical interference caused by air gaps and improve the clarity and contrast of the displayed image.

[0047] The first buffer portion 310 is attached to the main body area AA of the backlight side S2 of the display panel 100. Its main function is to provide uniform support for the main body area AA, disperse the stress generated when the main body area AA is subjected to external force, and ensure the display stability of the main body area AA. The second buffer portion 320 is attached to the corner area NA. Since the stress is concentrated in the corner area NA, the second buffer portion 320 can provide more support and stress buffering for the corner area NA. Moreover, the first buffer portion 310 and the second buffer portion 320 have the same thickness. The same thickness ensures that the entire backlight side S2 of the display panel 100 is subjected to uniform force during the bonding process, avoiding local stress concentration caused by the difference in thickness of the buffer layer 300. In addition, there is a gap between the first buffer portion 310 and the second buffer portion 320, which provides deformation space for the corner area NA when subjected to stress. When the corner area NA is squeezed by external force, the material can deform moderately in the gap area, thereby releasing stress and preventing material structure instability and wrinkling caused by excessive stress concentration.

[0048] The cover plate 200 can be made of materials such as glass, polycarbonate, or polymethyl methacrylate. The buffer layer 300 can be made of materials such as foam or silicone. For example, polyurethane foam is lightweight and has excellent cushioning properties. Its porous structure allows it to absorb energy through the compression and rebound of its pores when subjected to external forces, thus effectively buffering stress. Silicone has good elasticity and flexibility, and its Shore hardness range is wide, which can be selected according to the specific needs of the display module 1000. When faced with external impact, silicone can effectively absorb and disperse stress through its own elastic deformation.

[0049] The first buffer portion 310 and the second buffer portion 320 can be made of the same material to facilitate manufacturing and ensure uniform stress distribution. The second buffer portion 320 can be attached first, followed by the first buffer portion 310.

[0050] In this embodiment, the first buffer portion 310 is attached to the main body area AA of the backlight side S2 of the display panel 100, and the second buffer portion 320 is attached to the corner area NA of the backlight side S2 of the display panel 100, so that the corner area NA is also supported by the first buffer portion 310. Moreover, the first buffer portion 310 and the second buffer portion 320 have the same thickness, and there is a gap between the first buffer portion 310 and the second buffer portion 320. When the display module 1000 is attached to the housing, the second buffer portion 320 can reduce the stress in the corner area NA, thereby preventing wrinkles from appearing in the corner area NA of the display panel 100, which is beneficial for full-screen display and improves the performance of the display panel 100.

[0051] In some embodiments, there are multiple second buffer portions 320, and the multiple second buffer portions 320 are respectively attached to multiple corner regions NA in a one-to-one correspondence.

[0052] For example, if the display panel 100 is rectangular and has four corner areas NA, then a second buffer portion 320 is provided in each corner area NA. The second buffer portion 320 can be designed as an arc-shaped structure that matches the curved shape of the corner area NA, and its bottom surface is closely attached to the backlight side S2 curved surface of the corner area NA, thereby creating an effective stress buffer barrier in the corner area NA.

[0053] The second buffer portion 320, with its own elasticity and flexibility, deforms when subjected to stress, dispersing and absorbing the stress concentrated at the corner. Since each second buffer portion 320 is independently set and precisely fitted to its corresponding corner, they can independently cope with stresses of different directions and magnitudes experienced at their respective corners. For example, when the display panel 100 is bonded to the housing of the display device, the second buffer portion 320 in the corner region NA of the display panel 100 will diffuse the stress to the surrounding area through its own compression, twisting, and other deformations. Simultaneously, the gap between it and the first buffer portion 310 provides a certain deformation space for the material in the corner region NA, preventing material structural instability and wrinkling due to excessive stress concentration.

[0054] In this embodiment of the application, a second buffer portion 320 is provided in each corner region NA, which facilitates the full-screen display of the display panel 100.

[0055] In some embodiments, the display module 1000 further includes a polarizing layer 400 disposed between the display panel 100 and the cover plate 200.

[0056] The primary function of the polarizing layer 400 is to filter light, polarizing it in a specific direction. The light emitted by the display panel 100 is natural light vibrating in various directions. The polarizing layer 400 has a special molecular structure that allows only light vibrating in a specific direction to pass through, while blocking light from other directions. In conjunction with the display panel 100 and the cover plate 200, the polarizing layer 400 can precisely control the light. For example, in an organic light-emitting diode (OLED) display module 1000, the polarizing layer 400 can also reduce reflection and improve contrast.

[0057] The polarizing layer 400 effectively blocks unpolarized light from the ambient light, reducing the reflection of ambient light on the surface of the display panel 100, thereby improving image contrast. In strong light environments, such as when exposed to direct sunlight outdoors, a screen without the polarizing layer 400 will result in a blurry image due to reflected light, while the display module 1000 with the polarizing layer 400 can better present clear and vivid images.

[0058] In some embodiments, the display module 1000 further includes an optical adhesive layer 40 disposed between the display panel 100 and the cover plate 200.

[0059] An optical adhesive layer 40 is disposed on the side of the polarizing layer 400 facing away from the display panel 100. The optical adhesive layer 40 firmly bonds the display panel 100 and the cover plate 200 together, forming a stable structure for the entire display module 1000. It fills the tiny gaps between them, ensuring a tight fit and preventing loosening of components due to external impacts or long-term use, thereby improving the reliability and durability of the display module 1000. The optical adhesive can have an optical refractive index that matches that of the display panel 100 and the cover plate 200, effectively reducing light reflection at the interface between different media. When light is emitted from the display panel 100, passes through the optical adhesive layer 40, and reaches the cover plate 200, the reflection of light is significantly reduced due to the refractive index transition of the optical adhesive layer 40. More light can pass through the cover plate 200 and reach the human eye, thereby improving the screen's transmittance and making the image appear brighter and clearer.

[0060] like Figure 4 As shown, in some embodiments, the optical adhesive layer 40 includes a first optical adhesive portion 41 and a second optical adhesive portion 42. The first optical adhesive portion 41 is attached to the main body area AA of the display panel 100, and the second optical adhesive portion 42 is attached to the corner area NA of the display panel 100.

[0061] Through the precise adhesion and excellent optical performance of the first optical adhesive part 41 to the main body area AA, the light transmission efficiency of the main body of the display panel 100 is ensured. The second optical adhesive part 42, specially designed for the corner area NA, can better fill the gaps at the corner, making the corner structure more stable. During external impacts or long-term use, the corner area NA is less prone to loosening, deformation, or detachment, thus improving the structural stability and reliability of the entire display module 1000. The corner area NA is a region where stress concentration is prone to occur on the display panel 1000; the second optical adhesive part 42 can disperse and buffer the stress on the corner. When the display module 1000 is bonded to the housing, the second optical adhesive part 42 can absorb some of the stress, reducing the risk of wrinkles in the display panel 100 caused by stress.

[0062] Preferably, the thickness of the second optical adhesive portion 42 gradually decreases in the direction away from the first optical adhesive portion 41.

[0063] To ensure a secure bond and good optical performance between the NA display panel 100 and the cover plate 200 in the corner area, it is often necessary to increase the amount of optical adhesive, i.e., thicken the second optical adhesive portion 42. However, when traditional uniform thickness optical adhesive is used for corner bonding, air can easily remain inside the adhesive layer due to the irregular shape and uneven surface of the corner, forming air bubbles during the bonding process.

[0064] This embodiment employs a thickness gradient design, utilizing principles of fluid mechanics and pressure distribution. During the bonding process, the second optical adhesive portion 42, with its gradually decreasing thickness, flows from the thicker end to the thinner end under pressure. This flow effectively fills gaps and uneven areas in the corner region NA, while gradually expelling air from the thinner end. Compared to a uniform thickness adhesive layer, the thickness gradient adhesive layer provides a more uniform pressure distribution during bonding, making it easier to expel air and effectively preventing bubble formation.

[0065] This embodiment reduces the probability of air bubbles forming in the corner region NA. By using an optical adhesive layer with a gradually varying thickness, air can be more fully expelled during the bonding process, ensuring a tight, bubble-free bond between the display panel 100 and the cover plate 200 in the corner region NA. Because bonding bubbles are eliminated, light passing through the optical adhesive layer 40 in the corner region NA will not experience scattering, refraction, or other abnormal phenomena due to the presence of bubbles, thus ensuring uniform light transmission.

[0066] In some embodiments, the display module 1000 further includes a support layer 500 disposed between the display panel 100 and the buffer layer 300.

[0067] The support layer 500 is located between the display panel 100 and the buffer layer 300. It is typically made of a material with a certain strength and rigidity, such as high-strength plastic, thin metal sheet, or composite material. The support layer 500 directly supports the display panel 100 and works in conjunction with the buffer layer 300 to provide a stable structure for the display module 1000. The support layer 500 effectively improves the overall structural strength of the display module 1000, allowing it to maintain a stable shape and structure under external forces. For example, in mobile devices such as mobile phones and tablets, the support layer 500 ensures that the display module 1000 can withstand a certain degree of external force without damage during daily use, such as when held, placed, or accidentally dropped, thereby extending the lifespan of the display module 1000. Because the support layer 500 directly contacts and supports the display panel 100, it prevents the display panel 100 from cracking or pixel damage due to excessive localized stress. Especially for some thin and light display panels 100, the support layer 500 plays a more important role in preventing damage during assembly and use, ensuring the normal display function of the display panel 100, and improving display quality.

[0068] Secondly, this application also provides a method for manufacturing a display module 1000, comprising the following steps:

[0069] like Figure 5As shown, in step S10, a second buffer portion 320 is attached to the corner region NA of the backlight side S2 of the display panel 100; wherein, the display panel 100 includes a light-emitting side S1 and a backlight side S2 disposed opposite to each other along its own thickness direction, and the display panel 100 also includes a main body region AA and a plurality of corner regions NA. The main body region AA includes a plurality of curved edges AA1, which are curved from the light-emitting side S1 to the backlight side S2. The corner region NA is the region where adjacent curved edges AA1 intersect, and the corner region NA is also curved from the light-emitting side S1 to the backlight side S2.

[0070] A high-precision die-cutting process can be used to cut the buffer material (such as foam, silicone, etc.) into a shape that matches the height of the curved surface of the corner area NA according to a pre-designed curved surface model. The attachment process can be carried out with the help of automated attachment equipment, using a vision positioning system to accurately capture the position and contour of the corner area NA, ensuring that the curved surface of the second buffer part 320 fits the corner area NA. At the same time, before attachment, the corner area NA of the display panel 100 can be cleaned to remove surface dust, impurities, etc., to enhance the adhesion between the second buffer part 320 and the display panel 100.

[0071] By pre-attaching the second buffer portion 320 to the corner region NA, targeted support and buffering structures can be provided for the corner in advance. During subsequent manufacturing steps and use of the display module 1000, the second buffer portion 320 can effectively disperse the stress borne by the corner region NA, reduce the risk of material structure instability due to stress concentration, and thus reduce the probability of wrinkling in the corner region NA.

[0072] like Figure 6 As shown, in step S20, a cover plate 200 is attached to the light-emitting side S1 of the display panel 100; wherein, the cover plate 200 is a curved cover plate 200.

[0073] The selected curved cover plate 200 must match the curved shape of the light-emitting side S1 of the display panel 100 to ensure the overall aesthetics and optical performance after bonding. The cover plate 200 can be bonded using a vacuum bonding process. First, the display panel 100 and cover plate 200 are fixed to their respective positions on a vacuum bonding machine. The vacuum environment eliminates air interference, ensuring no air bubbles are generated during bonding. Then, optical adhesive is evenly applied to the light-emitting side S1 of the display panel 100 to ensure uniform light transmission and display effect. Next, under vacuum, the cover plate 200 is slowly lowered and bonded to the display panel 100, with pressure applied to ensure the optical adhesive fully fills the tiny gaps between the display panel 100 and the cover plate 200, achieving a tight bond. After bonding, a curing process can be performed. Depending on the characteristics of the optical adhesive, heating or ultraviolet irradiation can be used to rapidly cure the adhesive, enhancing the connection strength between the display panel 100 and the cover plate 200.

[0074] After the cover plate 200 is attached, the appearance of the display module 1000 is completely protected, which can resist physical damage such as scratches and collisions from the outside world, and at the same time effectively prevent dust, moisture and other substances from entering the interior of the display module 1000, thus protecting the display panel 100.

[0075] like Figure 7 As shown, in S30, a first buffer portion 310 is attached to the main body area AA of the backlight side S2 of the display panel 100; wherein, the first buffer portion 310 and the second buffer portion 320 have the same thickness, and there is a gap between the first buffer portion 310 and the second buffer portion 320.

[0076] After completing the corner area NA buffer and cover plate 200 attachment, this step involves attaching the first buffer portion 310 to the main body area AA of the backlight side S2 of the display panel 100. The first buffer portion 310 and the second buffer portion 320 have the same thickness, and there is a gap between them, which can achieve uniform support and stress distribution for the display panel 100.

[0077] When attaching the first buffer portion 310, automated equipment can be used. The equipment first cuts the material of the first buffer portion 310 according to the size and shape of the main body area AA of the display panel 100, ensuring a perfect fit. During the attachment process, the movement of the robotic arm is precisely controlled to accurately place the first buffer portion 310 in a predetermined position, ensuring that the gap between it and the second buffer portion 320 meets design requirements. Simultaneously, to ensure a tight fit between the first buffer portion 310 and the main body area AA of the display panel 100, the surface of the main body area AA can be cleaned and treated before attachment to enhance adhesion.

[0078] In some embodiments, prior to the step of attaching the second buffer portion 320 to the corner region NA of the backlight side S2 of the display panel 100, the method further includes:

[0079] like Figure 8 As shown, S40 uses a clamping structure 600 to clamp the edge of the carrier film 700.

[0080] The carrier film 700 plays a supporting and protective role in the processing of the display panel 100. In this step, a clamping structure 600 is used to secure the edges of the carrier film 700. The clamping structure 600 may have adjustable grippers that can be adjusted according to the size and shape of the carrier film 700 to ensure stable clamping of the edges of the carrier film 700. For example, on an automated production line, the clamping structure 600 can be a pneumatically or electrically driven mechanical fixture, with precise control of the gripper movements achieved through a precise control system.

[0081] By clamping the edge of the carrier film 700 with the clamping structure 600, stable support can be provided for the carrier film 700, keeping it flat and fixed during subsequent placement of the display panel 100 and other processing steps. This helps ensure the positional accuracy of the display panel 100 on the carrier film 700, avoiding any impact on the processing quality of the display panel 100 due to movement or deformation of the carrier film 700. Simultaneously, stable clamping also helps improve the automation level and production efficiency of the production process.

[0082] S50, Place the display panel 100 on the carrier film 700.

[0083] After the carrier film 700 is fixed in place by the clamping structure 600, the display panel 100 can be placed on the carrier film 700. The placement process allows control over the position and orientation of the display panel 100 to ensure it accurately falls within a predetermined area of ​​the carrier film 700. For example, a visual positioning system can be used to assist in this operation. A camera captures image information of the display panel 100 and the carrier film 700, and a computer analyzes the images to precisely control the movement of a robotic arm or other handling device, ensuring the display panel 100 is placed smoothly and accurately on the carrier film 700. To prevent air bubbles or impurities from forming between the display panel 100 and the carrier film 700 during placement, the surfaces of both the display panel 100 and the carrier film 700 can be cleaned before placement to ensure good adhesion between them.

[0084] Placing the display panel 100 on the carrier film 700 provides a stable support platform for the display panel 100. The carrier film 700 can buffer the external vibrations and impacts on the display panel 100, reducing damage to the display panel 100. At the same time, the carrier film 700 can also prevent the display panel 100 from directly contacting the processing equipment or workbench surface, avoiding scratches or contamination of the surface. In addition, since the carrier film 700 is fixed by the clamping structure 600, the position and orientation of the display panel 100 can be controlled after it is placed on it, which is beneficial for subsequent processing operations on the display panel 100, such as attaching the second buffer part 320 to the corner area NA of the backlight side S2, thereby improving the accuracy and reliability of the entire display module 1000 manufacturing process.

[0085] In some embodiments, the clamping structure 600 includes a first clamping member 610 and a second clamping member 620. The first clamping member 610 is used to clamp the edge of the main body region AA of the display panel 100, and the second clamping member 620 is used to clamp the corner region NA of the display panel 100.

[0086] The first clamping member 610 is mainly used to clamp the edge of the main body area AA of the display panel 100, providing a uniform and stable clamping force. The first clamping member 610 can have a large area and a smooth clamping surface, which fits tightly against the edge of the main body area AA, ensuring that no scratches or indentations are caused to the surface of the main body area AA during the clamping process.

[0087] The clamping surface of the second clamping member 620 typically adopts an arc-shaped or irregularly shaped structure that adapts to the corner curved surface, enabling it to closely fit the corner curved surface and achieve precise clamping. In addition, the second clamping member 620 can also have a certain elastic buffering function, which can absorb some energy through its own elastic deformation when subjected to external impact, further protecting the corner area NA.

[0088] In this embodiment, the positional stability of the display panel 100 during processing is improved by clamping it with the first clamping member 610 and the second clamping member 620. Whether attaching the buffer part, the cover plate 200, or performing other complex processing techniques, the display panel 100 can remain fixed, avoiding processing errors caused by positional displacement.

[0089] like Figure 9 As shown, preferably, the clamping structure 600 further includes a control device and a drive device 800 connected to each other. The drive device 800 is connected to the second clamping member 620 and is used to drive the second clamping member 620 to move along the thickness direction of the display panel 100.

[0090] The drive device 800 can be a cylinder, hydraulic cylinder, or motor, etc. The control device can issue commands to the drive device 800 through a preset program or real-time sensor data to ensure that the second clamping member 620 can fit the corner curved surface of the display panel 100, and adjust the pressure as needed during the fitting process to avoid air bubbles caused by uneven pressure.

[0091] Before the attachment process of the display panel 100 begins, the control device determines the movement path of the second clamping member 620 and the working parameters of the carrier film 700 control unit based on the parameter information of the display panel 100. The drive device 800 drives the second clamping member 620 to move to the initial position, so as to smoothly clamp and fix the display panel 100.

[0092] During the application of the optical adhesive layer 40 or the cover plate 200, as the bonding process progresses, the second clamping member 620, under the action of the driving device 800, gradually moves upward or downward along the thickness direction of the display panel 100. During this process, the control units at the four corners of the carrier film 700 monitor the status of the corner areas NA in real time. When signs of air bubbles are detected in a corner, the control unit immediately adjusts the support characteristics of the carrier film 700 in that corner area NA, such as reducing local pressure to allow the air bubbles to escape. Simultaneously, the control unit feeds back the abnormal information to the control device, which then adjusts the action of the driving device 800, slowing down the movement speed of the second clamping member 620 at the corresponding corner or fine-tuning the pressure, working in conjunction with the carrier film 700 control unit to eliminate the air bubbles.

[0093] Preferably, the drive device 800 includes a plurality of drive members 810, and the plurality of drive members 810 are respectively connected to the second clamping member 620 in a one-to-one correspondence.

[0094] The carrier film 700 has driving components 810 added at its four corners, and these driving components 810 can work independently. Each control unit can be equipped with functional modules such as pressure regulation and temperature control. Taking pressure regulation as an example, during the four-curve bonding process, the control unit can sense the pressure distribution of the NA in the corner area in real time and make dynamic adjustments according to the preset pressure curve. For example, when it is detected that the NA pressure in a certain corner area is too high and may cause air bubbles to remain, the control unit will control the moving component at that position to move, reducing the supporting pressure of the carrier film 700 at the corresponding corner position, so that the display panel 100 and the cover plate 200 can expel air more smoothly during bonding; if the pressure is too low, the control unit will control the moving component at that position to move in the opposite direction to appropriately increase the pressure and ensure a tight bond.

[0095] Thirdly, embodiments of this application also provide a display device, including a display module 1000 as described in any of the above embodiments or a display module 1000 prepared by the preparation method of any of the above embodiments.

[0096] Since the display device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0097] The display device can be any device with display function, such as mobile devices such as mobile phones, tablets, laptops, handheld computers, in-vehicle electronic devices, wearable devices, ultra-mobile personal computers (UMPCs), netbooks, or personal digital assistants (PDAs), as well as non-mobile devices such as personal computers (PCs), televisions (TVs), ATMs, or self-service machines.

[0098] While the embodiments disclosed in this application are as described above, the content is merely for the purpose of facilitating understanding of this application and is not intended to limit the invention. Any person skilled in the art to which this application pertains may make any modifications and changes in form and detail of the implementation without departing from the spirit and scope disclosed in this application; however, the scope of protection of this application shall still be determined by the scope defined in the appended claims.

[0099] The above description is merely a specific embodiment of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, substitutions for other connection methods described above can be made by referring to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application.

Claims

1. A display module, characterized in that, include: The display panel includes a light-emitting side and a backlight side arranged opposite to each other along its own thickness direction. The display panel also includes a main body area and multiple corner areas. The main body area includes multiple curved edges. The curved edges are curved in the direction from the light-emitting side to the backlight side. The corner areas are the areas where adjacent curved edges intersect. The corner areas are also curved in the direction from the light-emitting side to the backlight side. A cover plate is disposed on the light-emitting side of the display panel, and the cover plate is a curved cover plate; The buffer layer includes a first buffer portion and a second buffer portion. The first buffer portion is attached to the main body area on the backlight side of the display panel, and the second buffer portion is attached to the corner area on the backlight side of the display panel. The first buffer portion and the second buffer portion have the same thickness, and there is a gap between the first buffer portion and the second buffer portion.

2. The display module according to claim 1, characterized in that, The number of the second buffer parts is multiple, and the multiple second buffer parts are respectively attached to the multiple corner regions one by one.

3. The display module according to claim 1, characterized in that, The display module also includes a polarizing layer, which is disposed between the display panel and the cover plate.

4. The display module according to claim 1, characterized in that, The display module also includes an optical adhesive layer, which is disposed between the display panel and the cover plate.

5. The display module according to claim 4, characterized in that, The optical adhesive layer includes a first optical adhesive portion and a second optical adhesive portion, wherein the first optical adhesive portion is attached to the main body area of ​​the display panel and the second optical adhesive portion is attached to the corner area of ​​the display panel; Preferably, the thickness of the second optical adhesive portion gradually decreases in the direction away from the first optical adhesive portion.

6. The display module according to claim 1, characterized in that, The display module also includes a support layer, which is disposed between the display panel and the buffer layer.

7. A method for manufacturing a display module, characterized in that, Includes the following steps: A second buffer portion is attached to the corner region of the backlight side of the display panel; wherein, the display panel includes a light-emitting side and a backlight side disposed opposite to each other along its own thickness direction, the display panel also includes a main body region and a plurality of corner regions, the main body region includes a plurality of curved edges, the curved edges are curved in the direction from the light-emitting side to the backlight side, the corner regions are the regions where adjacent curved edges intersect, and the corner regions are also curved in the direction from the light-emitting side to the backlight side; A cover plate is attached to the light-emitting side of the display panel; wherein the cover plate is a curved cover plate. A first buffer portion is attached to the main body area on the backlight side of the display panel; wherein the first buffer portion and the second buffer portion have the same thickness, and there is a gap between the first buffer portion and the second buffer portion.

8. The preparation method according to claim 7, characterized in that, The step of attaching the second buffer portion to the corner area on the backlight side of the display panel includes the following prior to the step of attaching the second buffer portion: The edge of the carrier membrane is clamped using a clamping structure; The display panel is placed on the carrier film.

9. The preparation method according to claim 8, characterized in that, The clamping structure includes a first clamping member and a second clamping member. The first clamping member is used to clamp the edge of the main body area of ​​the display panel, and the second clamping member is used to clamp the corner area of ​​the display panel. Preferably, the clamping structure further includes a control device and a driving device connected to each other. The driving device is connected to the second clamping member and is used to drive the second clamping member to move along the thickness direction of the display panel. Preferably, the driving device includes a plurality of driving components, each of which is connected to the second clamping component in a one-to-one correspondence.

10. A display device, characterized in that, The display module includes any one of the display modules as described in any one of claims 1-6 or the display module prepared by the preparation method as described in any one of claims 7-9.

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