Curved display screen fitting method

Abstract

The invention discloses a curved-surface display screen laminating method which comprises the following steps: setting one of protection areas as a to-be-laminated area, bending the protection area adjacent to the to-be-laminated area downwards relative to the to-be-laminated area, attaching a display module to the surface of the to-be-laminated area through an optical adhesive film to form a to-be-laminated body, placing a heat transfer panel on the top of the to-be-laminated body, and laminating the heat transfer panel on the surface of the to-be-laminated body. The heat transfer panel is pressed and covered by the pressing plate from top to bottom, and heat is transferred to the heat transfer panel at the same time. When the pressing step is executed, due to the fact that the warping part of the to-be-pressed body is located below the to-be-laminated area, the thickness of the heat transfer panel is not affected by the warping amount of the curved-surface panel, pressing of the to-be-pressed body can be achieved by arranging the thin heat transfer panel, the laminating efficiency of the curved-surface display screen can be improved, and the laminating quality of the curved-surface display screen is improved. The influence of the high temperature in the pressing process and the gravity of the heat transfer panel on the display module is small, the risk that the display module is damaged in the pressing process is reduced, the attaching yield of the curved-surface display screen is increased, and the manufacturing cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of display device preparation, and particularly relates to a method for attaching a curved display screen. Background Art

[0002] With the continuous development of display technology, curved display screens have been widely used in technical fields such as home appliances, vehicles, medical equipment, and electronic paper. A curved display screen usually includes a curved panel having a plurality of mutually curved regions, and a display module is attached to at least one region of the curved panel. The display module has the functions of displaying images and controlling.

[0003] In related technologies, during the process of attaching the display module to the curved panel, the curved panel warps upward, and one of the attachment areas of the display module and the curved panel is attached. A heat transfer panel is used to transfer heat to both of them, and a downward pressure is applied through a pressing member. For a curved panel with a large bending angle, a relatively thick heat transfer panel needs to be set to avoid interference between the pressing member and the curved panel during the downward pressing process. However, the relatively thick heat transfer panel has poor thermal conductivity, and the pressing time of the pressing member needs to be extended, resulting in damage to the display module due to high temperature during pressing. Moreover, the weight of the heat transfer panel is relatively large, which is likely to damage the display module, affecting the attachment yield and manufacturing cost of the curved display screen. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. For this purpose, the present invention provides a method for attaching a curved display screen, which can improve the attachment yield of the curved display screen and reduce the manufacturing cost of the curved display screen.

[0005] According to the method for attaching a curved display screen in an embodiment of the present invention, it includes: A curved panel is provided. The curved panel includes a plurality of protection areas, and adjacent protection areas are bent with each other. One of the protection areas in a planar state is set as the area to be attached, the area to be attached is set horizontally, and the protection area adjacent to the area to be attached is bent downward relative to the area to be attached; The display module is attached to the surface of the area to be attached through an optical adhesive film, and the display module, the optical adhesive film, and the area to be attached form a body to be pressed; The heat transfer panel is placed on the top of the body to be pressed, and the heat transfer panel is pressed from top to bottom by a pressing plate while heat is transferred to the heat transfer panel.

[0006] The method for attaching a curved display screen according to an embodiment of the present invention has at least the following beneficial effects: When the present invention performs the pressing and covering step, since the warped part of the object to be pressed is located below the area to be bonded, the thickness of the heat transfer panel is not affected by the warpage amount of the curved panel. By setting a thinner heat transfer panel, the pressing and covering of the object to be pressed can be achieved, which can shorten the pressing and covering time of the object to be pressed, improve the bonding efficiency of the curved display screen, and the display module is less affected by the high temperature during pressing and the gravity of the heat transfer panel, reducing the risk of damage to the display module during the pressing and covering process, improving the yield rate of the curved display screen bonding, and reducing the manufacturing cost.

[0007] According to some embodiments of the present invention, when the pressing plate presses and covers the heat transfer panel, the display module is located at the top of the area to be bonded.

[0008] According to some embodiments of the present invention, before the pressing plate presses and covers the object to be pressed, the object to be pressed is placed on the top of a flexible support member, and the bottom surface of the support member is not higher than the lowest point of the curved panel.

[0009] According to some embodiments of the present invention, the projection of the visible area of the display module on the horizontal plane does not exceed the projection of the support member on the horizontal plane, and the support member does not exceed the curved area between the area to be bonded and the adjacent protected area.

[0010] According to some embodiments of the present invention, at least two of the protected areas of the curved panel in a planar state are set as the areas to be bonded, and at least two objects to be pressed are formed. The top of the support member is provided with at least two support surfaces, and the bottom of each object to be pressed is supported by the support surface.

[0011] According to some embodiments of the present invention, at least two of the protected areas of the curved panel in a planar state are set as the areas to be bonded, and at least two objects to be pressed are formed. At least one protected area is provided between the two areas to be bonded, and the protected area is bent downward relative to the area to be bonded. The pressing plate simultaneously presses and covers at least two objects to be pressed; Alternatively, a plurality of curved panels and the pressing plate are provided, each curved panel is provided with an area to be bonded, and the plurality of pressing plates act simultaneously and respectively press and cover different objects to be pressed.

[0012] According to some embodiments of the present invention, the heights of different areas to be bonded are different; And / or, there is an included angle between different areas to be bonded.

[0013] According to some embodiments of the present invention, during the forming process of the object to be pressed, when at least one side of the optical adhesive film adheres to the display module or the area to be bonded, ultraviolet rays are irradiated on the optical adhesive film.

[0014] According to some embodiments of the present invention, when the pressing plate presses the object to be pressed, the optical adhesive film is heated and melted, and fills the gap between the display module and the area to be bonded.

[0015] According to some embodiments of the present invention, after the object to be pressed is formed, the object to be pressed is transferred to a vacuum hot pressing chamber, and the pressing plate in the vacuum hot pressing chamber is used to press the object to be pressed.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. Description of the Drawings

[0017] The present invention will be further described below in conjunction with the drawings and embodiments, where: Figure 1 is a schematic diagram of the bonding of a curved display screen in the prior art; Figure 2 is a schematic diagram of an embodiment of a curved panel; Figure 3 is a schematic diagram of the bonding of a curved display screen in the present invention; Figure 4 is a schematic diagram of the bonding of a curved display screen in another embodiment.

[0018] Reference Signs: Curved panel 10; Display module 20; Heat transfer panel 30; Curved panel 100; Protection area 110, Area to be bonded 110a; Display module 200; Optical adhesive film 300; Object to be pressed 400; Heat transfer panel 500; Pressing plate 600; Support member 700, Support surface 710, Transition surface 720. Detailed Description of the Embodiments

[0019] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0020] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0021] In the description of the present invention, the meaning of "several" is more than one, the meaning of "multiple" is more than two, and understandings such as "greater than", "less than", and "exceeding" do not include the corresponding number, while understandings such as "above", "below", and "within" include the corresponding number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0022] In the description of the present invention, unless otherwise clearly defined, words such as "arrangement", "installation", and "connection" should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0023] In the description of the present invention, the descriptions with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0024] Referring to Figure 1 in FIGS. (a) and (b), the curved surface panel of the curved surface display screen includes a plurality of mutually bent regions. When the curved surface display screen is attached in a traditional manner, the curved surface panel 10 warps upward, the display module 20 is attached to one of the attachment regions 11 of the curved surface panel 10, heat is transferred to both of them by the heat transfer panel 30, and a downward pressure is applied to the heat transfer panel 30 by the pressing member 40; however, when the bending angle of the curved surface panel 10 is relatively large, the heat transfer panel 30 needs to be set to a relatively large thickness to avoid interference between the pressing member 40 and the curved surface during the downward pressing process. For example, Figure 1 in, the height of the top surface of the heat transfer panel 30 needs to exceed the highest point where the curved surface panel 10 warps upward; however, the relatively thick heat transfer panel 30 has poor thermal conductivity, and the pressing time of the pressing member 40 needs to be extended to achieve stable pressing. However, long-term high-temperature pressing will damage the display module 20, resulting in poor display after the curved surface display screen is attached. Moreover, the relatively thick heat transfer panel 30 has a relatively large weight and is likely to crush the display module 20, resulting in a high rejection rate during the attachment process, affecting the attachment yield and manufacturing cost of the curved surface display screen.

[0025] Based on the above, referring to Figure 2 and Figure 3 , in the embodiments of the present application, a method for attaching a curved surface display screen (hereinafter referred to as the attachment method) is provided. The curved surface display screen can be an in-vehicle multi-screen, a control screen on the surface of a washing machine, an electronic ink screen, etc. The attachment method includes the following steps: A curved surface panel 100 is provided. The curved surface panel 100 can be used as a protection panel for a curved surface display screen, or directly used as a part of the appearance of a product after being installed on the corresponding product. Refer to Figure 2 , the curved surface panel 100 includes a plurality of protection areas 110. The adjacent protection areas 110 are bent with respect to each other and form a certain angle therebetween. This angle can be an acute angle, a right angle or an obtuse angle. It should be noted that the curved surface display screen has various forms. It is allowed that some of the protection areas 110 of the curved surface panel 100 are in a curved surface form itself. However, the protection area 110 in the curved surface form cannot be attached to the display module 200. Therefore, one of the protection areas 110 of the curved surface panel 100 in a planar state is set as the area to be attached 110a. The area to be attached 110a is set horizontally, and the protection area 110 adjacent to the area to be attached 110a is bent downward with respect to the area to be attached 110a.

[0026] Refer to Figure 3 , the display module 200 is attached to the surface of the area to be attached 110a through an optical adhesive film 300. The display module 200, the optical adhesive film 300 and the area to be attached 110a form a body to be pressed 400. The heat transfer panel 500 is placed on the top of the body to be pressed 400. The heat transfer panel 500 has a flat pressing surface, can be in close contact with the body to be pressed 400, and provides a uniform pressing force; then, the pressing plate 600 is used to press the heat transfer panel 500 from top to bottom, and at the same time, heat is transferred to the heat transfer panel 500. Through heat transfer, the heat transfer panel 500 transfers the heat to the body to be pressed 400. Under the pressing and heat conduction actions of the heat transfer panel 500, the area to be attached 110a is attached to the display module 200 smoothly and the edges are closed.

[0027] It should be noted that since the warped part of the body to be pressed 400 is located below the area to be attached 110a, the thickness of the heat transfer panel 500 is not affected by the warping amount of the curved surface panel 100. By setting a thinner heat transfer panel 500, the pressing of the body to be pressed 400 can be realized, which can shorten the pressing time of the body to be pressed 400, improve the attachment efficiency of the curved surface display screen, the display module 200 is less affected by the high temperature during pressing and the gravity of the heat transfer panel 500, reduce the risk of damage to the display module 200 during pressing, improve the yield rate of the attachment of the curved surface display screen, and reduce the manufacturing cost.

[0028] It should be noted that the display module 200 equipped with liquid crystal has high clarity and energy-saving effect. However, liquid crystal is sensitive to temperature and pressure. When the display module 200 is attached to the curved panel 100, in order to improve the flatness of the attachment and reduce the influence of high temperature on the liquid crystal, a flat heat transfer panel 500 is provided between the pressing plate 600 and the object to be pressed 400. The heat transfer panel 500 applies pressure and transfers heat to the object to be pressed 400. On the one hand, the heat transfer panel 500 provides a flat and uniform pressing force to the object to be pressed 400, so that the object to be pressed 400 is uniformly heated everywhere, and the attachment of the object to be pressed 400 is more flat. On the other hand, the display module 200 is indirectly in contact with the pressing plate 600 and does not directly bear high temperature, which can reduce the damage of liquid crystal caused by high temperature and thus avoid poor display of the curved display screen.

[0029] In an embodiment, the display module 200 is set as a hard screen without an air layer and without a backlight module. The optical adhesive film 300 is set as a UV-curable optically transparent thermal-melt adhesive film (Thermal-melt Optical Clear Adhesive, TOCA). When the pressing plate 600 presses on the heat transfer panel 500, the heat transfer panel 500 transfers heat to the object to be pressed 400. The optical adhesive film 300 is heated to a molten state and flows between the area to be attached 110a and the display module 200. At the same time, under the pressing action of the heat transfer panel 500, the optical adhesive film 300 discharges the bubbles between the area to be attached 110a and the display module 200 through flow, making the attachment between the display module 200 and the area to be attached 110a closer. In addition, the melting temperature of the adhesive film in TOCA is low, and the optical adhesive film 300 can be melted by using a lower pressing force and hot pressing temperature, with little damage to the liquid crystal in the display module 200. In an embodiment, the hot pressing temperature of the object to be pressed 400 is set to be less than 60 °C, such as 58 °C, 55 °C, 52 °C, 50 °C, 48 °C, etc.

[0030] The optical adhesive film 300 includes an adhesive layer and release layers attached to opposite sides of the adhesive layer. When attaching the display module 200 to the surface of the area to be attached 110a through the optical adhesive film 300, first tear off the release layer on one side of the optical adhesive film 300 to expose one side of the adhesive layer, and then attach the exposed side of the adhesive layer to the surface of one of the display module 200 and the area to be attached 110a. Then tear off the release layer on the other side of the optical adhesive film 300, and then attach the surface of the other of the display module 200 and the area to be attached 110a to form the object to be pressed 400.

[0031] In one embodiment of the present invention, during the forming process of the to-be-pressed assembly 400, when at least one side of the optical adhesive film 300 is not attached to the display module 200 or the to-be-bonded area 110a, ultraviolet rays are irradiated onto the optical adhesive film 300. By irradiating ultraviolet rays onto the optical adhesive film 300, the initiator in the adhesive layer is excited. After the initiator is triggered, the chemical bonds between the internal elements are opened, and the cross-linking reaction gradually begins. After the initiator of the bonding adhesive is triggered, no other curing steps need to be set.

[0032] Specifically, after the adhesive layer is attached to the display module 200 or the to-be-bonded area 110a, ultraviolet rays are irradiated onto the optical adhesive film 300. The step of irradiating ultraviolet rays onto the optical adhesive film 300 can be specifically set after one side of the adhesive layer is attached to the display module 200 or the to-be-bonded area 110a and before the release layer on the other side is peeled off, or after one side of the adhesive layer is attached to the display module 200 or the to-be-bonded area 110a and the release layer on the other side is peeled off, or after the two opposite sides of the adhesive layer are respectively attached to the display module 200 and the to-be-bonded area 110a.

[0033] It can be understood that before the initiator of the optical adhesive film 300 is triggered, it is not cross-linked and does not have adhesive force, but only has self-adhesive force. In one embodiment, the triggering step is set after both release layers are peeled off and before the two sides of the adhesive layer are respectively attached to the to-be-bonded area 110a and the display module 200, which can prevent the silicone oil on the release film from transferring to the adhesive layer during the triggering process, affecting the display effect of the curved display screen, and is also convenient for peeling off the release layer on the surface of the adhesive layer, preventing the release layer from taking away the adhesive layer during the peeling process, resulting in wrinkles in the adhesive layer and affecting the flatness of the subsequent attachment process, or causing glue overflow when the adhesive layer melts and flows.

[0034] The pressing of the to-be-pressed assembly 400 can be set to be carried out in a vacuum hot pressing chamber. First, the vacuum hot pressing chamber is made to have a vacuum atmosphere, and the bubbles inside the to-be-pressed assembly 400 flow outwards during the vacuum pumping process, so that the bubbles inside the to-be-pressed assembly 400 are discharged. Then, the pressing plate 600 in the vacuum hot pressing chamber is used to press the to-be-pressed assembly 400. The adhesive layer inside the to-be-pressed assembly 400 is heated and melted, flows, and spreads between the display module 200 and the to-be-bonded area 110a, so that the display module 200 and the to-be-bonded area 110a are attached flatly.

[0035] The forming process of the to-be-pressed assembly 400 is set to be carried out outside the vacuum hot pressing chamber, and then the to-be-pressed assembly 400 is transferred into the vacuum hot pressing chamber for pressing. The attachment process of the to-be-pressed assembly 400 is not restricted by the internal environment of the vacuum hot pressing chamber, which is convenient for operation. When attaching the adhesive layer to the display module 200 or the to-be-bonded area 110a, a squeegee or a roller can be used to push the adhesive layer, so that the adhesive layer is flatly attached to the surfaces of the display module 200 and the to-be-bonded area 110a, reducing the probability of wrinkles in the adhesive layer.

[0036] During the traditional lamination process, a layer of protective glass is provided on the display module 200 based on the traditional curved display screen. During the lamination process, a hot plate is used to contact the protective glass on the display module 200, and heat is transferred to the display module 200 through the protective glass. However, the heat transfer performance of the protective glass is poor, resulting in the display module 200 being easily damaged due to long-term heat and pressure. Based on this, in an embodiment of the present invention, when the pressing plate 600 presses the object to be laminated 400 through the heat transfer panel 500, the display module 200 is located at the top of the area to be laminated 110a, and the heat transfer panel 500 contacts the display module 200, directly transferring heat to the display module 200, which can quickly melt and flow the adhesive layer, shorten the pressing time, and improve the lamination efficiency of the curved display screen. In addition, in the present invention, the TOCA optical adhesive film 300 is used for attachment. The TOCA adhesive film has a low melting point and can quickly enter the molten state, causing little damage to the liquid crystal in the display module 200. Compared with the traditional OCA and water glue, it has a higher attachment efficiency and reduces the probability of display defects after attachment.

[0037] In addition, since the optical adhesive film 300 and the display module 200 are sequentially attached to the top of the area to be laminated 110a, and the protective area 110 adjacent to the area to be laminated 110a is bent downward compared to the area to be laminated 110a, when the optical adhesive film 300 and the display module 200 are attached to the area to be laminated 110a, the attachment jig (such as a squeegee, roller, etc.) is not restricted by the protective area 110 on the side of the area to be laminated 110a, making the forming of the object to be laminated 400 more convenient.

[0038] In one embodiment, multiple objects to be laminated 400 can be pressed simultaneously to attach the display module 200 to multiple areas of the curved panel 100 at the same time, forming a multi-screen for the curved display screen and improving the preparation efficiency of the curved display screen. Specifically, referring to Figure 3 , at least two flat protective areas 110 of the curved panel 100 are set as the areas to be laminated 110a, and at least two objects to be laminated 400 are formed. At least one protective area 110 is provided between the two areas to be laminated 110a, and the protective area 110 is bent downward relative to the two areas to be laminated 110a. Then, the pressing plate 600 can press at least two objects to be laminated 400 simultaneously, causing the optical adhesive films 300 in at least two objects to be laminated 400 to be heated and pressed simultaneously, completing the pressing of multiple objects to be laminated 400; and when the pressing plate 600 presses multiple objects to be laminated 400, since the protective areas 110 adjacent to the objects to be laminated 400 are all bent downward, the thickness of the heat transfer panel 500 is not affected by the warpage amount of the curved panel 100. By setting a thinner heat transfer panel 500, the pressing of the object to be laminated 400 can be achieved, which can shorten the pressing time of the object to be laminated 400, and the display module 200 is less affected by the high temperature during pressing and the gravity of the heat transfer panel 500.

[0039] Furthermore, in this embodiment, the forming process of multiple assemblies to be pressed 400 is set outside the vacuum hot pressing chamber. Among different assemblies to be pressed 400, the display module 200 can be attached to the top or bottom of the corresponding area to be bonded 110a. After the multiple assemblies to be bonded are formed, the curved surface panel 100 is placed into the vacuum hot pressing chamber to perform the pressing and covering step. In addition, in this embodiment, a pressing plate 600 can be provided. The pressing plate 600 is provided with multiple pressing and covering parts. The interval between adjacent pressing and covering parts and the position of the pressing and covering parts are adapted to the position and spacing of the assemblies to be pressed 400. Different pressing and covering parts on the pressing plate 600 respectively press and cover different assemblies to be pressed 400. In this case, a driving mechanism can be set to be connected to the pressing plate 600 and drive the pressing plate 600 to move up and down. One driving mechanism can realize the synchronous driving of multiple pressing and covering parts; alternatively, multiple pressing plates 600 are provided, and each pressing plate 600 respectively presses and covers different assemblies to be pressed 400. In this case, multiple driving mechanisms can be set, and each driving mechanism is connected to a pressing plate 600. The multiple driving mechanisms can simultaneously drive different pressing plates 600 to move synchronously, and different driving mechanisms can drive the corresponding pressing plates 600 to perform pressing and covering with different pressing and covering amounts; it should be noted that the pressing and covering amount refers to the downward feed amount during the pressing and covering process of the pressing plate 600.

[0040] Alternatively, in another embodiment, multiple curved surface panels 100 and pressing plates 600 are provided. Each curved surface panel 100 is provided with an area to be bonded 110a. The area to be bonded 110a on each curved surface panel 100 can form an assembly to be pressed 400 with a display module 200 and an optical adhesive film 300. When pressing and covering multiple assemblies to be pressed 400, the multiple pressing plates 600 act simultaneously, and different pressing plates 600 respectively press and cover different assemblies to be pressed 400 to simultaneously complete the pressing and covering of multiple assemblies to be pressed 400.

[0041] Further, for the case where the pressing plate 600 presses multiple objects to be pressed 400 at the same time, the heights of the areas to be bonded 110a in different objects to be pressed 400 are set differently, or there is an included angle between different areas to be bonded 110a to adapt to different forms of the curved surface panel 100. When different pressing parts of the same pressing plate 600 press objects to be pressed 400 with different heights, the heights of different pressing parts can be set differently, so that when the feed amount of the pressing plate 600 is the same, each pressing part can simultaneously contact the heat transfer panels 500 at the tops of different objects to be pressed 400, and the pressing amounts of different pressing parts on the corresponding objects to be pressed 400 are the same; when different pressing plates 600 press objects to be pressed 400 with different heights, different pressing plates 600 can be set to have different feed amounts, and different pressing plates 600 contact objects to be pressed 400 with different heights at different times respectively, but the pressing amounts of different pressing plates 600 on the corresponding objects to be pressed 400 are the same; when different pressing plates 600 press objects to be pressed 400 with an included angle, the included angle between adjacent pressing parts is the same as the included angle between the objects to be pressed 400, and the feed direction of the pressing plate 600 is perpendicular to the surface of the corresponding object to be pressed 400. Therefore, the feed directions of different pressing plates 600 have the same angle as the included angle between the objects to be pressed 400, and different pressing plates 600 can simultaneously press the corresponding objects to be pressed 400.

[0042] In an embodiment, referring to Figure 2 , before the pressing plate 600 presses the object to be pressed 400, the object to be pressed 400 is placed on the top of the flexible support member 700, and the bottom surface of the support member 700 is not higher than the lowest point of the curved surface panel 100. In this way, it can be ensured that during the process of the pressing plate 600 pressing the object to be pressed 400, the curved surface panel 100 is always above the bottom surface of the support member 700 and will not interfere with the platform below the support member 700; in addition, the support member 700 provides flexible support to the object to be pressed 400. During the process of the object to be pressed 400 being pressed, the support member 700 can undergo flexible deformation and absorb part of the pressure of the pressing plate 600 to perform pressing buffering, so as to avoid damage to the display module 200 caused by hard pressing.

[0043] Further, the projection of the visual area of the display module 200 onto the horizontal plane does not exceed the projection of the support member 700 onto the horizontal plane, and the support member 700 does not extend beyond the bending region between the area to be bonded 110a and the adjacent protection area 110. On the one hand, the entire visual area of the display module 200 is within the support range of the support member 700, avoiding the situation where the edge of the area to be pressed 400 is not closed or there are residual bubbles due to the lack of support in the visual area and the edge area of the visual area of the display module 200 during the pressing process of the area to be pressed 400. On the other hand, the support member 700 only supports the area where the area to be bonded 110a is located, and the transition area between the area to be bonded 110a and the adjacent protection area 110 is located on the outer peripheral side of the support member 700. Therefore, during the pressing process, the original bending angle between the area to be bonded 110a and the adjacent protection area 110 is retained, enabling the curved display screen to be formed into a preset curved shape.

[0044] In another embodiment, referring to Figure 3 , the support member 700 is arranged to support multiple areas to be pressed 400 simultaneously. That is, at least two of the protection areas 110 in a planar state of the curved panel 100 are set as the areas to be bonded 110a, thereby forming at least two areas to be pressed 400. At least two support surfaces 710 are provided on the top of the support member 700, and the bottom of each area to be pressed 400 is supported by the support surface 710. When the pressing plate 600 presses multiple areas to be pressed 400 simultaneously, the multiple areas to be pressed 400 are respectively supported by different support surfaces 710. And regardless of whether there is a height difference or an included angle between different areas to be pressed 400, since the support member 700 is flexible, it can absorb the pressure in all directions and at all positions through deformation to achieve pressing buffering.

[0045] In addition, a transition surface 720 is further provided on the top of the support member 700. The transition surface 720 is located between adjacent support surfaces 710. There is a protection area 110 between adjacent areas to be bonded 110a. When different areas to be pressed 400 are respectively supported by the corresponding support surfaces 710, the transition surface 720 is located below the protection area 110, and there is a gap between the transition surface 720 and the protection area 110 to avoid the displacement of different areas to be pressed 400 during the pressing process and prevent the bending angle between the protection area 110 and the area to be bonded 110a from changing during the pressing process.

[0046] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made without departing from the spirit of the present invention within the knowledge scope of those of ordinary skill in the art. In addition, the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

Claims

1. A method for attaching a curved display screen, characterized in that, Comprising: A curved surface panel is provided. The curved surface panel includes a plurality of protection areas. Adjacent protection areas are bent relative to each other. One of the protection areas in a planar state is set as the area to be adhered. The area to be adhered is horizontally arranged, and the protection area adjacent to the area to be adhered is bent downward relative to the area to be adhered; The display module is attached to the surface of the area to be adhered through an optical adhesive film. The display module, the optical adhesive film and the area to be adhered form a body to be pressed; The heat transfer panel is placed on the top of the body to be pressed, and the pressing plate presses the heat transfer panel from top to bottom, and at the same time transfers heat to the heat transfer panel.

2. The method for bonding a curved display screen according to claim 1, wherein When the pressing plate presses the heat transfer panel, the display module is located on the top of the area to be adhered.

3. The method for attaching a curved display screen according to claim 1, wherein Before the pressing plate presses the body to be pressed, the body to be pressed is placed on the top of a flexible support member, and the bottom surface of the support member is not higher than the lowest point of the curved surface panel.

4. The method for attaching a curved display screen according to claim 3, wherein The projection of the visible area of the display module on the horizontal plane does not exceed the projection of the support member on the horizontal plane, and the support member does not exceed the bending area between the area to be adhered and the adjacent protection area.

5. The method for bonding a curved display screen according to claim 3, wherein At least two of the protection areas in a planar state of the curved surface panel are set as the areas to be adhered, and at least two bodies to be pressed are formed. At least two support surfaces are provided on the top of the support member, and the bottom of each body to be pressed is supported by the support surface.

6. The method for bonding a curved display screen according to claim 1, wherein At least two of the protection areas in a planar state of the curved surface panel are set as the areas to be adhered, and at least two bodies to be pressed are formed. At least one protection area is provided between the two areas to be adhered. The protection area is bent downward relative to the area to be adhered, and the pressing plate presses at least two bodies to be pressed at the same time; Alternatively, a plurality of the curved surface panels and the pressing plates are provided. Each curved surface panel is provided with one area to be adhered, and the plurality of pressing plates act simultaneously and respectively press different bodies to be pressed.

7. The method for bonding a curved display screen according to claim 6, wherein The heights of different areas to be adhered are different; And / or, there is an included angle between different areas to be adhered.

8. The method for bonding a curved display screen according to claim 1, wherein During the forming process of the body to be pressed, when at least one side of the optical adhesive film is attached to the display module or the area to be adhered, ultraviolet rays are irradiated on the optical adhesive film.

9. The method for bonding a curved display screen according to claim 1, wherein The optical adhesive film is set such that when the pressing plate presses the body to be pressed, the optical adhesive film is heated and melted and fills the gap between the display module and the area to be adhered.

10. The method for attaching a curved display screen according to claim 1, wherein After the body to be pressed is formed, the body to be pressed is transferred to a vacuum hot pressing chamber, and the pressing plate in the vacuum hot pressing chamber presses the body to be pressed.

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