Attaching pad and attaching device

Abstract

The utility model discloses a fitting pad and a fitting device, the fitting pad is made of an elastic material, the fitting pad comprises a fitting surface and a base surface which are oppositely arranged, in a plane view of the fitting pad, the edge of a pattern of the fitting surface is provided with four vertex angles, and the pattern of the fitting surface is provided with a central point; the central point is used for fitting the middle part of the flexible screen and the middle part of the curved surface cover plate; the four vertex angles are used for fitting the four corners of the flexible screen and the four corners of the curved surface cover plate; a concave part is formed between two adjacent vertex angles which are arranged at intervals along the edge of the pattern of the fitting pad; wherein the distance from the part of the binding surface at the central point to the base surface is greater than the distance from the part of the binding surface at the vertex angle to the base surface. According to the application, the fitting effect of the flexible screen and the curved surface cover plate can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a fitting pad and a fitting device. BACKGROUND

[0002] With the continuous development of the mobile phone industry, users have increasingly strong demand for narrower mobile phone screen frames. Since there is a need for circuit arrangement in the non-light-emitting area around the screen, the frame of the screen itself cannot be infinitely reduced, and therefore four-curved screens have emerged.

[0003] However, in the production process of the four-curved screen, the traditional order of fitting the flexible screen and the curved cover plate is as follows: first, fitting the middle part of the flexible screen and the middle part of the curved cover plate; second, fitting the four edges of the flexible screen and the four edges of the curved cover plate; and finally, fitting the four corners of the flexible screen and the four corners of the curved cover plate. However, when fitting the four corners of the flexible screen and the four corners of the curved cover plate, the four corners of the flexible screen cannot be tightly fitted with the four corners of the curved cover plate, that is, the four corners of the flexible screen are wrinkled like the edges of a beer bottle cap, which affects the fitting effect.

[0004] Therefore, it is necessary to provide a new technical solution to solve the above technical problems. CONTENT OF THE INVENTION

[0005] The present application aims to provide a fitting pad and a fitting device, which can improve the fitting effect of the flexible screen and the curved cover plate.

[0006] To solve the above problems, the technical solution of the present application is as follows:

[0007] In a first aspect, the present application provides a fitting pad, which is made of an elastic material and includes a fitting surface and a base surface arranged oppositely. In the plan view of the fitting pad, the edge of the pattern of the fitting surface has four corners, and the pattern of the fitting surface has a center point.

[0008] The center point is used to fit the middle part of the flexible screen and the middle part of the curved cover plate.

[0009] The four corners are used to fit the four corners of the flexible screen and the four corners of the curved cover plate.

[0010] A recess is formed between two adjacent corners arranged along the edge of the pattern of the fitting pad.

[0011] In addition, the distance from the part of the fitting surface located at the center point to the base surface is greater than the distance from the part of the fitting surface located at the corners to the base surface.

[0012] In an embodiment of the present application, in the plan view of the gasket, the edge of the pattern of the gasket surface further has four side edges, two ends of the side edges are connected to two adjacent top corners, and the middle part of the side edges is recessed towards the center point, forming the recessed part, and the side edges are used to fit the four edges of the flexible screen and the four edges of the curved cover plate.

[0013] In the plan view of the gasket, the four side edges enclose the edge of the pattern of the gasket surface.

[0014] In an embodiment of the present application, in the plan view of the gasket, the pattern of the gasket has a first symmetry axis and a second symmetry axis intersecting at the center point, and the first symmetry axis and the second symmetry axis divide the gasket into four deformation parts, the bottom surfaces of the four deformation parts are connected to form the base surface, and the top surfaces of the four deformation parts are connected to form the gasket surface.

[0015] In an embodiment of the present application, in the plan view of the gasket, the first symmetry axis and the second symmetry axis are perpendicular to each other, and the pattern of the gasket is a symmetric pattern about the center point.

[0016] In an embodiment of the present application, the deformation part includes a ridge part extending from the center point to the top corner, and the thickness of the ridge part decreases from the center point to the top corner.

[0017] In an embodiment of the present application, among the four top corners, two top corners diagonally arranged correspond to two ridge parts forming a first connecting ridge, and the other two top corners diagonally arranged correspond to two ridge parts forming a second connecting ridge, the thickness of the first connecting ridge decreases from the middle part of the first connecting ridge to the two ends of the first connecting ridge, and the thickness of the second connecting ridge decreases from the middle part of the second connecting ridge to the two ends of the second connecting ridge.

[0018] In the plan view of the gasket, the first connecting ridge and the second connecting ridge intersect at the center point, and the pattern formed by the first connecting ridge and the second connecting ridge is symmetric about the center point.

[0019] In an embodiment of the present application, the four side edges include two first side edges and two second side edges, the length of the first side edge is greater than the length of the second side edge.

[0020] The middle part of the first side edge is recessed towards the center point and forms a first inner recessed corner.

[0021] The middle part of the second side is concave towards the center point and forms a second inner concave angle, and the angle of the first inner concave angle is greater than the angle of the second inner concave angle.

[0022] In an embodiment of the present application, the first side includes two first straight sides connected to each other, the first straight sides are connected to adjacent one of the top corners, and the connection part of the two first straight sides forms the middle part of the first side, and the connection part of the two first straight sides is concave towards the center point and forms the first inner concave angle.

[0023] The second side includes two second straight sides connected to each other, the second straight sides are connected to adjacent one of the top corners, and the connection part of the two second straight sides forms the middle part of the second side, and the connection part of the two second straight sides is concave towards the center point and forms the second inner concave angle.

[0024] In one of the deformation parts, the first straight side and the second straight side connected to the top corner corresponding to the deformation part form the edge of the deformation part.

[0025] In an embodiment of the present application, in one of the deformation parts, the top surface of the ridge part is formed with a ridge line, the ridge line extends along the direction from the center point to the top corner, and the distance from the ridge line to the base surface at the part of the center point is greater than the distance from the ridge line to the base surface at the part of the top corner.

[0026] The first curve is formed between the ridge line and the first straight side, the second curve is formed between the ridge line and the second straight side, and the curvature of the first curve is greater than the curvature of the second curve.

[0027] In an embodiment of the present application, the second curve includes a first connecting surface, a second connecting surface and a third connecting surface connected to each other, the first connecting surface, the second connecting surface and the third connecting surface are arranged along the direction from the center point to the second straight side, and the first connecting surface is located between the second connecting surface and the first curve.

[0028] The first connecting surface forms a first inclination angle with the base surface, the second connecting surface forms a second inclination angle with the base surface, the third connecting surface forms a third inclination angle with the base surface, the first inclination angle is smaller than the second inclination angle, and the second inclination angle is smaller than the third inclination angle.

[0029] In an embodiment of the present application, one end of the second connecting surface extends to the top corner, and in the plan view of the gasket, the pattern of the part of the second connecting surface extending to the top corner is a rounded corner.

[0030] In an embodiment of the present application, the second curved surface further comprises a fourth connecting surface connected to a side of the third connecting surface away from the second connecting surface, the second straight edge comprises a first sub-edge and a second sub-edge connected to each other, the first sub-edge is formed as an edge of the third connecting surface, and the second sub-edge is formed as an edge of the fourth connecting surface.

[0031] In an embodiment of the present application, the fourth connecting surface forms a fourth inclination angle with the base surface, and the third inclination angle is smaller than the fourth inclination angle.

[0032] In an embodiment of the present application, the conforming pad further comprises a peripheral surface connecting the conforming surface and the base surface, the peripheral surface comprises four side surfaces connected to each other in a head-to-tail manner, one of the side surfaces is connected to two adjacent top corners, and a middle portion of the side surface is recessed towards a center of the conforming pad.

[0033] In an embodiment of the present application, in the first configuration of the conforming pad, a distance from the conforming surface at the center point to the base surface is a first distance, a distance from the conforming surface at the top corner to the base surface is a second distance, and a difference between the first distance and the second distance is a first difference.

[0034] In the second configuration of the conforming pad, a distance from the conforming surface at the center point to the base surface is a third distance, a distance from the conforming surface at the top corner to the base surface is a fourth distance, and a difference between the first distance and the second distance is a second difference, the second difference being smaller than the first difference.

[0035] In an embodiment of the present application, the conforming pad is capable of being deformed from the first configuration to the second configuration under the action of a pressure along a thickness direction of the conforming pad.

[0036] In the process of deforming the conforming pad from the first configuration to the second configuration, a difference between the distance from the conforming surface at the center point to the base surface and the distance from the conforming surface at the top corner to the base surface is reduced.

[0037] In an embodiment of the present application, in the second configuration of the conforming pad, a distance between the middle portion of the side edge and the center point is a first distance.

[0038] In the third configuration of the conforming pad, a distance between the middle portion of the side edge and the center point is a second distance, the second distance being greater than the first distance.

[0039] In an embodiment of the present application, the conforming pad is capable of being deformed from the second configuration to the third configuration under the action of a pressure along a thickness direction of the conforming pad.

[0040] During the process of the bonding pad deforming from the second form to the third form, the distance from the middle of the side to the center point decreases.

[0041] In one embodiment of this application, in the third form of the bonding pad,

[0042] In a plan view of the bonding pad, the pattern on the side is a straight line shape.

[0043] Secondly, this application proposes a bonding device for bonding a flexible screen to a curved cover plate, the bonding device comprising:

[0044] An adhesive pad, made of an elastic material, includes an adhesive surface and a base surface disposed opposite to each other. In a plan view of the adhesive pad, the edge of the pattern on the adhesive surface has four apex corners, and the pattern on the adhesive surface has a center point. The center point is used to adhere the center of the flexible screen to the center of the curved cover plate. The four apex corners are used to adhere the four corners of the flexible screen to the four corners of the curved cover plate. A recess is formed between two adjacent apex corners spaced apart along the edge of the pattern on the adhesive pad. The distance from the portion of the adhesive surface located at the center point to the base surface is greater than the distance from the portion of the adhesive surface located at the apex corners to the base surface.

[0045] A traction membrane, used to support the flexible screen, is disposed between the bonding pad and the curved cover plate;

[0046] The center point is set to correspond to the middle of the flexible screen and the middle of the curved cover plate, and the four apex corners are set to correspond to the four corners of the flexible screen and the four corners of the curved cover plate.

[0047] In the present application, since the material of the fitting pad is an elastic material, the fitting pad will deform when subjected to external force. In the process of fitting the flexible screen and the curved cover plate through the fitting pad, pressure is applied to the base surface of the fitting pad away from the flexible screen, and the fitting of the middle part of the flexible screen and the middle part of the curved cover plate is first completed through the center point of the fitting surface. The fitting pad will deform in the process of being subjected to pressure, so that the four corners of the fitting surface are in contact with the four corners of the flexible screen, and the fitting of the four corners of the flexible screen and the four corners of the curved cover plate is completed. The design of the recessed part can ensure that the fitting step of the four corners of the flexible screen and the four corners of the curved cover plate is in advance, so that the four corners of the flexible screen and the four corners of the curved cover plate with larger fitting area compensation requirements are first fitted, and then the fitting of the four edges of the flexible screen and the four edges of the curved cover plate is completed. Thus, the deformation of the flexible screen in the fitting process can be distributed to the four edges of the flexible screen which are fitted later. Since the size of the four edges of the flexible screen is larger than the size of the four corners of the flexible screen, the present application can distribute the deformation of the flexible screen as much as possible, reduce the possibility of wrinkles on the four corners of the flexible screen, and thus improve the fitting effect of the flexible screen and the curved cover plate. BRIEF DESCRIPTION OF DRAWINGS

[0048] Figure 1 is a schematic view of an embodiment of the fitting device of the present application;

[0049] Figure 2 is another view of the fitting device of the present application shown in Figure 1

[0050] Figure 3 is a schematic view of an embodiment of the fitting pad of the present application;

[0051] Figure 4 is a plan view of the fitting pad shown in Figure 3

[0052] Figure 5 is a sectional view of the K-K' section line of the fitting pad of the present application shown in Figure 4

[0053] Figure 6 is a schematic view of an embodiment of the deformation part of the present application. DETAILED DESCRIPTION

[0054] The meanings of the terms used in the present specification and claims correspond to the meanings commonly understood by those of ordinary skill in the art to which the present application belongs. The terms used in the present specification and claims are only for the purpose of facilitating the description and understanding of the present application, and are not intended to limit the present application to the narrow interpretation of the specific terms used in the specification and claims.

[0055] Please refer to Figure 1 ​​​The application provides a fitting device 1000. The fitting device 1000 is used for fitting a flexible screen 300 and a curved cover plate 200. The fitting device 1000 comprises a traction film 400 and a fitting pad 100. The traction film 400 is used for bearing the flexible screen 300 and is arranged between the fitting pad 100 and the curved cover plate 200. The center point O of the fitting surface P1 of the fitting pad 100 is arranged in correspondence with the middle part of the flexible screen 300 and the middle part of the curved cover plate 200, and the four top corners C of the fitting surface P1 of the fitting pad 100 are arranged in correspondence with the four corners of the flexible screen 300 and the four corners of the curved cover plate 200.

[0056] Please refer to Figure 2 In the fitting process, the traction film 400 bears the flexible screen 300 and is arranged close to the curved cover plate 200, and the fitting pad 100 is arranged below the traction film 400 and abuts against the traction film 400, so as to fit the flexible screen 300 and the curved cover plate 200. First, the center point O of the fitting surface P1 is high, and the pressure applied to the base surface P2 of the fitting pad 100 along the thickness direction Z of the fitting pad 100 can first complete the fitting of the middle part of the flexible screen 300 and the middle part of the curved cover plate 200. Since the material of the fitting pad 100 is an elastic material, the fitting pad 100 will be deformed in the process of applying pressure to the fitting pad 100. After deformation, the four top corners C of the fitting surface P1 abut against the four corners of the traction film 400, and the pressure applied to the base surface P2 of the fitting pad 100 along the thickness direction Z of the fitting pad 100 can complete the fitting of the four corners of the flexible screen 300 and the four corners of the curved cover plate 200. After the fitting of the four corners of the flexible screen 300 and the four corners of the curved cover plate 200 is completed, the pressure applied to the base surface P2 of the fitting pad 100 along the thickness direction Z of the fitting pad 100 can make the side edges L of the fitting surface P1 become straight edge patterns, so as to complete the fitting of the four edges of the flexible screen 300 and the four edges of the curved cover plate 200.

[0057] Please refer to Figure 3 The application provides a fitting pad 100. The material of the fitting pad 100 is an elastic material. The fitting pad 100 comprises a fitting surface P1 and a base surface P2 arranged oppositely.

[0058] In the plan view of the fitting pad 100, the edge of the pattern of the fitting surface P1 has four top corners C, and the pattern of the fitting surface P1 has a center point O. The center point O is used for fitting the middle part of the flexible screen 300 and the middle part of the curved cover plate 200. The four top corners C are used for fitting the four corners of the flexible screen 300 and the four corners of the curved cover plate 200. Adjacent two top corners C arranged along the edge of the pattern of the fitting pad 100 form a recess D. The distance H1 from the part of the fitting surface P1 located at the center point O to the base surface P2 is greater than the distance H2 from the part of the fitting surface P1 located at the top corner C to the base surface P2.

[0059] In the embodiment, the material of the fitting pad 100 is elastic, and the fitting pad 100 deforms when subjected to external force. In the process of fitting the flexible screen 300 and the curved cover plate 200 through the fitting pad 100, the pressure is applied to the base surface P2 of the fitting pad 100 away from the flexible screen 300, and the fitting of the middle part of the flexible screen 300 and the middle part of the curved cover plate 200 is first completed through the center point O of the fitting surface P1. The fitting pad 100 deforms in the process of being subjected to the pressure, so that the four top corners C of the fitting surface P1 are in contact with the four corners of the flexible screen 300, and the fitting of the four corners of the flexible screen 300 and the four corners of the curved cover plate 200 is completed. The design of the recessed part D can ensure that the fitting step of the four corners of the flexible screen 300 and the four corners of the curved cover plate 200 is in advance, so that the four corners of the flexible screen 300 and the four corners of the curved cover plate 200 that have a larger compensation requirement are first fitted, and then the fitting of the four edges of the flexible screen 300 and the four edges of the curved cover plate 200 is performed after the fitting of the four corners of the flexible screen 300 and the four corners of the curved cover plate 200 is completed. Thus, the deformation of the flexible screen 300 in the fitting process can be distributed to the four edges of the flexible screen 300 that are fitted later. Since the size of the four edges of the flexible screen 300 is greater than the size of the four corners of the flexible screen 300, the embodiment can distribute the deformation of the flexible screen 300 as evenly as possible, reduce the possibility of wrinkles on the four corners of the flexible screen 300, and thus improve the fitting effect of the flexible screen 300 and the curved cover plate 200.

[0060] Optionally, in the first mode of the fitting pad 100, the distance from the part of the fitting surface P1 located at the center point O to the base surface P2 is a first distance. The distance from the part of the fitting surface P1 located at the top corner C to the base surface P2 is a second distance. The difference between the first distance and the second distance is a first difference.

[0061] In the second mode of the fitting pad 100, the distance from the part of the fitting surface P1 located at the center point O to the base surface P2 is a third distance. The distance from the part of the fitting surface P1 located at the top corner C to the base surface P2 is a fourth distance. The difference between the first distance and the second distance is a second difference. The second difference is less than the first difference.

[0062] In the second mode of the fitting pad 100, the distance from the part of the fitting surface P1 located at the center point O to the base surface P2 is a third distance. The distance from the part of the fitting surface P1 located at the top corner C to the base surface P2 is a fourth distance. The difference between the first distance and the second distance is a second difference. The second difference is less than the first difference.

[0063] In the first mode of the bonding pad 100, the center point O of the bonding surface P1 abuts against the middle part of the traction film 400 to bond the middle part of the flexible screen 300 and the middle part of the curved cover plate 200. During the bonding process, the base surface P2 of the bonding pad 100 needs to be continuously subjected to the pressure along the thickness direction Z of the bonding pad 100, so that the middle part of the flexible screen 300 is closely bonded to the middle part of the curved cover plate 200, and air bubbles are avoided between the middle part of the flexible screen 300 and the middle part of the curved cover plate 200, thereby affecting the bonding effect.

[0064] When the pressure along the thickness direction Z of the bonding pad 100 is applied to the base surface P2, the bonding pad 100 is deformed from the first state to the second mode. In the second mode, since the second difference is smaller than the first difference, at this time, the four corners C of the bonding surface P1 can abut against the four corners of the traction film 400, and the base surface P2 of the bonding pad 100 in the second mode needs to be continuously subjected to the pressure along the thickness direction Z of the bonding pad 100, so that the four corners of the flexible screen 300 are closely bonded to the four corners of the curved cover plate 200.

[0065] Optionally, in the plan view of the bonding pad 100, the edge of the pattern of the bonding surface P1 also has four side edges L. The two ends of the side edge L are connected to the adjacent two corners C. The middle part of the side edge L is recessed towards the direction of the center point O. The recessed part D is formed. The side edge L is used to bond the four edges of the flexible screen 300 and the four edges of the curved cover plate 200. In the plan view of the bonding pad 100, the four side edges L enclose the edge of the pattern of the bonding surface P1.

[0066] Optionally, in the second mode of the bonding pad 100, the distance from the middle part of the side edge L to the center point O is a first distance.

[0067] In the third mode of the bonding pad 100, the distance from the middle part of the side edge L to the center point O is a second distance, and the second distance is greater than the first distance.

[0068] Wherein, the bonding pad 100 can be deformed from the second mode to the third mode under the action of the pressure along the thickness direction Z of the bonding pad 100. In the process of deforming the bonding pad 100 from the second mode to the third mode, the distance from the middle part of the side edge L to the center point O is reduced.

[0069] Optionally, in the third mode of the bonding pad 100, in the plan view of the bonding pad 100, the pattern of the side edge L is a straight line shape.

[0070] In this embodiment, after the middle part of the flexible screen 300 and the middle part of the curved cover plate 200 are bonded, and the four corners of the flexible screen 300 and the four corners of the curved cover plate 200 are bonded, the bonding of the four edges of the flexible screen 300 and the four edges of the curved cover plate 200 needs to be realized.

[0071] In the embodiment, the conforming pad 100 can be deformed from the second shape to a third shape when a pressure along the thickness direction Z of the conforming pad 100 is applied to the base surface P2 of the conforming pad 100 in the second shape. In the third shape, the second distance is greater than the first distance, the recessed portion D of the conforming surface P1 is reduced, and the four sides L of the conforming surface P1 can abut against the four edges of the traction film 400. The sides L of the conforming surface P1 are in a linear shape and are arranged corresponding to the four edges of the flexible screen 300 and the four edges of the curved cover plate 200. The pressure along the thickness direction Z of the conforming pad 100 is continuously applied to the base surface P2 of the conforming pad 100 in the third shape, so that the four edges of the flexible screen 300 are tightly attached to the four edges of the curved cover plate 200.

[0072] Since the conforming step of the four edges of the flexible screen 300 and the four edges of the curved cover plate 200 is after the conforming step of the four corners of the flexible screen 300 and the four corners of the curved cover plate 200, the deformation of the flexible screen 300 during the conforming process can be distributed to the four edges of the flexible screen 300 that are conformed later, so that the conforming effect is improved and wrinkles of the four corners of the flexible screen 300 are avoided.

[0073] Optionally, the conforming pad 100 further comprises a peripheral surface connecting the conforming surface P1 and the base surface P2, and the peripheral surface comprises four side surfaces P3 connected in a head-to-tail manner, one side surface P3 connecting two adjacent top corners C, and a middle portion of the side surface P3 being recessed towards the center of the conforming pad 100.

[0074] In the present application, one side surface P3 corresponds to one side L.

[0075] Please refer to Figure 4 Optionally, the four sides L include two first sides L1 and two second sides L2. The length of the first side L1 is greater than the length of the second side L2. A middle portion of the first side L1 is recessed towards the center point O and forms a first inner recessed corner A1. A middle portion of the second side L2 is recessed towards the center point O and forms a second inner recessed corner A2. The angle of the first inner recessed corner A1 is greater than the angle of the second inner recessed corner A2.

[0076] In the embodiment, in a state where no pressure is applied to the conforming pad 100 or the conforming pad 100 is before being deformed from the first shape to the third shape, the middle portions of the four sides L of the conforming surface P1 are recessed towards the center point O. In the recessed state of the side L, the side L of the conforming pad 100 can avoid abutting against the traction film 400, so that the conforming step of the four edges of the flexible screen 300 and the four edges of the curved cover plate 200 is after the conforming step of the four corners of the flexible screen 300 and the four corners of the curved cover plate 200.

[0077] The length of the first side L1 is greater than the length of the second side L2. The first side L1 corresponds to the long side of the flexible screen 300, and the second side L2 corresponds to the short side of the flexible screen 300. In the process of deforming the fitting pad 100 from the first form to the third form, the distance from the middle of the side L to the center point O gradually increases, and the first concave angle and the second concave angle also gradually increase. When the fitting pad 100 is deformed to the third form, the first inner concave angle A1 and the second inner concave angle A2 are both increased to 180 degrees, the first side L1 is parallel to the long side of the flexible screen 300, and the second side L2 is parallel to the short side of the flexible screen 300. The fitting of the four edges of the flexible screen 300 and the four edges of the curved cover plate 200 is started.

[0078] Because the length of the first side L1 is different from the length of the second side L2, in order to ensure that the first side L1 and the second side L2 can form straight edges at the same time in the third form, complete the fitting of the four edges of the flexible screen 300 and the four edges of the curved cover plate 200, it is necessary to set the angle of the first inner concave angle A1 to be greater than the angle of the second inner concave angle A2.

[0079] Optionally, the first side L1 includes two first straight sides L1a connected with each other. The first straight side L1a is connected with an adjacent vertex C. The connection of the two first straight sides L1a forms the middle of the first side L1. The connection of the two first straight sides L1a is recessed towards the direction of the center point O and forms the first inner concave angle A1.

[0080] The second side L2 includes two second straight sides L2a connected with each other. The second straight side L2a is connected with an adjacent vertex C. The connection of the two second straight sides L2a forms the middle of the second side L2. The connection of the two second straight sides L2a is recessed towards the direction of the center point O and forms the second inner concave angle A2.

[0081] In the embodiment, before the fitting pad 100 is not subjected to pressure or the fitting pad 100 is deformed from the first form to the third form, the connection of the two first straight sides L1a and the connection of the two second straight sides L2a are recessed towards the direction of the center point O.

[0082] In the third mode of the bonding pad 100, the two first straight edges L1a of the same first side edge L1 extend along the long edge direction of the flexible screen 300, and the two second straight edges L2a of the same second side edge L2 extend along the short edge direction of the flexible screen 300. In the plan view of the bonding pad 100, the pattern of the two first straight edges L1a of the same first side edge L1 is a straight line shape, and the pattern of the two second straight edges L2a of the same second side edge L2 is a straight line shape. The two first straight edges L1a in the straight line shape can realize the bonding of the long edge of the flexible screen 300 and the long edge of the curved cover plate 200, and the two second straight edges L2a in the straight line shape can realize the bonding of the short edge of the flexible screen 300 and the short edge of the curved cover plate 200. The first straight edge L1a and the second straight edge L2a can improve the bonding effect of the four edges of the flexible screen 300 and the four edges of the curved cover plate 200, and make the deformation of the flexible screen 300 be distributed to the four edges of the flexible screen 300.

[0083] Referring to Figure 4 Optionally, in the plan view of the bonding pad 100, the pattern of the bonding pad 100 has a first symmetry axis and a second symmetry axis intersecting at the center point O. The first symmetry axis and the second symmetry axis divide the bonding pad 100 into four deformation portions 10. The bottom surfaces of the four deformation portions 10 are connected to form a base surface P2. The top surfaces of the four deformation portions 10 are connected to form a bonding surface P1.

[0084] Optionally, in one deformation portion 10, a first straight edge L1a and a second straight edge L2a connected to a top corner C corresponding to the deformation portion 10 form an edge of the deformation portion 10.

[0085] In the embodiment, the design of the four deformation portions can make the overall deformation of the bonding pad 100 more uniform, and in the process of using the bonding pad 100 to bond the flexible screen 300 and the curved cover plate 200, the phenomenon that the local flexible screen 300 is bonded in advance or delayed is avoided, thereby improving the overall bonding effect of the flexible screen 300 and the curved cover plate 200.

[0086] Referring to Figure 4 Optionally, in the plan view of the bonding pad 100, the first symmetry axis and the second symmetry axis are perpendicular to each other, and the pattern of the bonding pad 100 is a pattern symmetrical about the center point O.

[0087] In the embodiment, since the pattern of the bonding pad 100 is a central symmetric pattern in the plan view of the bonding pad 100, the overall deformation of the bonding pad 100 is more uniform, the four corners of the flexible screen 300 are bonded at the same time, the phenomenon that a certain corner of the flexible screen 300 is bonded in advance or delayed is avoided, and bubbles or wrinkles are further improved, thereby improving the overall bonding effect of the flexible screen 300 and the curved cover plate 200.

[0088] Optionally, the deformation part 10 comprises a ridge 11 extending from the center point O to the top corner C, and the thickness of the ridge 11 decreases from the center point O to the top corner C.

[0089] In the embodiment, the design of the ridge 11 can make the contact and fitting area of the flexible screen 300 and the curved cover plate 200 present a trend of expanding from the middle to the top corner C, avoiding the phenomenon that the four edges of the flexible screen 300 are fitted with the four edges of the curved cover plate 200 before the four corners of the flexible screen 300 are fitted with the four corners of the curved cover plate 200, and then the four edges of the flexible screen 300 are fitted with the four edges of the curved cover plate 200 after the four corners of the flexible screen 300 are fitted with the four corners of the curved cover plate 200, so as to distribute the deformation of the flexible screen 300 to the four edges of the flexible screen 300 which are fitted later, reduce the possibility of wrinkles on the four corners of the flexible screen 300, and improve the fitting effect.

[0090] Optionally, referring to Figure 5 In the four top corners C, the two ridges 11 corresponding to the two top corners C arranged at opposite angles form a first connecting ridge 12, and the two ridges 11 corresponding to the other two top corners C arranged at opposite angles form a second connecting ridge. The thickness of the first connecting ridge 12 decreases from the middle of the first connecting ridge 12 to the two ends of the first connecting ridge 12. The thickness of the second connecting ridge decreases from the middle of the second connecting ridge to the two ends of the second connecting ridge.

[0091] In the plan view of the fitting pad 100, the first connecting ridge 12 and the second connecting ridge intersect at the center point O. The pattern formed by the first connecting ridge 12 and the second connecting ridge is symmetrical about the center point O.

[0092] In the embodiment, in the plan view of the fitting pad 100, since the first connecting ridge 12 and the second connecting ridge are a central symmetric pattern symmetrical about the center point O, in the fitting process of the fitting pad 100 extruding the flexible screen 300 and the curved cover plate 200, the middle of the flexible screen 300 and the middle of the curved cover plate 200 will first be in contact and fitted, and then the contact and fitting area of the flexible screen 300 and the curved cover plate 200 will present an X-shaped pattern and expand outward until the four corners of the flexible screen 300 are fitted with the four corners of the curved cover plate 200, and then the four edges of the flexible screen 300 are fitted with the four edges of the curved cover plate 200 as the fitting pad 100 is continuously extruded. By this way, the four corners of the flexible screen 300 and the four corners of the curved cover plate 200 which have relatively large compensation requirements are first fitted, and then the deformation of the flexible screen 300 is distributed to the four edges of the flexible screen 300 which are fitted later, reducing the possibility of wrinkles on the four corners of the flexible screen 300 and improving the fitting effect.

[0093] Optionally, referring to Figure 5In the deformation part 10, the top surface of the ridge 11 is formed with a ridge line M. The ridge line M extends in the direction from the center point O to the top corner C. The distance from the ridge line M at the center point O to the base surface P2 is greater than the distance from the ridge line M at the top corner C to the base surface P2. The first curved surface Q1 is formed between the ridge line M and the first straight side L1a. The second curved surface Q2 is formed between the ridge line M and the second straight side L2a. The curvature of the first curved surface Q1 is greater than the curvature of the second curved surface Q2.

[0094] In the present embodiment, since the long side length of the flexible screen 300 is inconsistent with the short side length of the flexible screen 300, in order to make the first side L1 and the second side L2 realize the long side of the flexible screen 300 and the short side of the flexible screen 300 and the long side of the curved cover plate 200 and the short side of the curved cover plate 200 after the deformation of the adhesive pad 100 to the third state, the curvature of the first curved surface Q1 is greater than the curvature of the second curved surface Q2, so that the four sides of the flexible screen 300 are simultaneously attached, the deformation of the flexible screen 300 is distributed to the four sides of the flexible screen 300, the deformation of the flexible screen 300 is only distributed on the short side of the flexible screen 300 or the long side of the flexible screen 300, and the attachment effect is improved.

[0095] Please refer to Figure 6 , the second curved surface Q2 includes a first connecting surface Q2a, a second connecting surface Q2b and a third connecting surface Q2c connected with each other. The first connecting surface Q2a, the second connecting surface Q2b and the third connecting surface Q2c are arranged in the direction from the center point O to the second straight side L2a. The first connecting surface Q2a is located between the second connecting surface Q2b and the first curved surface Q1.

[0096] Among them, the first connecting surface Q2a forms a first inclination angle with the base surface P2. The second connecting surface Q2b forms a second inclination angle with the base surface P2. The third connecting surface Q2c forms a third inclination angle with the base surface P2. The first inclination angle is smaller than the second inclination angle. The second inclination angle is smaller than the third inclination angle.

[0097] In the present embodiment, the region of the flexible screen 300 corresponding to the first connecting surface Q2a close to the center point O and having a small angle of the first inclination angle is first attached with the curved cover plate 200; the region of the flexible screen 300 corresponding to the second connecting surface Q2b at a moderate distance from the center point O and having a moderate angle of the second inclination angle is then attached with the curved cover plate 200; and the region of the flexible screen 300 corresponding to the third connecting surface Q2c far away from the center point O and having a large angle of the third inclination angle is finally attached with the curved cover plate 200. Thus, the air between the flexible screen 300 and the curved cover plate 200 is discharged in stages from the center point O to the top corner C, so that air bubbles are avoided between the flexible screen 300 and the curved cover plate 200 after attachment, and the attachment effect is improved.

[0098] Optionally, one end of the second connecting surface Q2b extends to the top corner C, and in the plan view of the bonding pad 100, the pattern of the portion of the second connecting surface Q2b extending to the top corner C is a rounded corner.

[0099] In this embodiment, since the four corners of the curved cover plate 200 are designed as rounded corners, when the pattern of the portion of the second connecting surface Q2b extending to the top corner C is a rounded corner, the fitting effect of the four corners of the flexible screen 300 and the four corners of the curved cover plate 200 can be improved, and wrinkles can be avoided.

[0100] Optionally, the second curved surface Q2 further comprises a fourth connecting surface Q2d. The fourth connecting surface Q2d is connected to the side of the third connecting surface Q2c away from the second connecting surface Q2b. The second straight edge L2a comprises a first subsegment and a second subsegment connected to each other. The first subsegment is formed as an edge of the third connecting surface Q2c. The second subsegment is formed as an edge of the fourth connecting surface Q2d. The fourth connecting surface Q2d forms a fourth inclined angle with the base surface P2, and the third inclined angle is smaller than the fourth inclined angle.

[0101] In this embodiment, the fourth connecting surface Q2d corresponds to the area of the flexible screen 300 where the camera hole is arranged. By finally fitting the fourth connecting surface Q2d, the air between the flexible screen 300 and the curved cover plate 200 is squeezed out from the fourth connecting surface Q2d, and the fitting effect of the flexible screen 300 and the curved cover plate 200 is improved.

[0102] The specific embodiments of the present application are described in detail above. The above-described embodiments disclosed by the present application are only preferred embodiments of the present application. Those skilled in the art can make many modifications and improvements without departing from the concept of the present application. These modifications and improvements fall within the scope of the claims of the present application.

Claims

1. A gasket, the material of which is an elastic material, characterized in that, The fitting pad comprises a fitting surface and a base surface arranged oppositely, and an edge of a pattern of the fitting surface has four vertexes in a plan view of the fitting pad; The center point is used for fitting the middle part of the flexible screen and the middle part of the curved cover plate; The four vertexes are used for fitting the four corners of the flexible screen and the four corners of the curved cover plate; A recess is formed between two adjacent vertexes arranged along the edge of the pattern of the fitting pad; The distance from the part of the fitting surface at the center point to the base surface is greater than the distance from the part of the fitting surface at the vertex to the base surface.

2. The conformable pad of claim 1, wherein, In the plan view of the fitting pad, the edge of the pattern of the fitting surface also has four sides, two ends of the side are connected to two adjacent vertexes, and the middle part of the side is recessed towards the center point, forming the recess, and the side is used for fitting the four sides of the flexible screen and the four sides of the curved cover plate; In the plan view of the fitting pad, the four sides enclose the edge of the pattern of the fitting surface.

3. The conformable gasket of claim 2, wherein, In the plan view of the fitting pad, the pattern of the fitting pad has a first symmetry axis and a second symmetry axis intersecting at the center point, and the first symmetry axis and the second symmetry axis divide the fitting pad into four deformation parts, the bottom surfaces of the four deformation parts are connected to form the base surface, and the top surfaces of the four deformation parts are connected to form the fitting surface.

4. The conformable gasket of claim 3, wherein, In the plan view of the fitting pad, the first symmetry axis and the second symmetry axis are perpendicular to each other, and the pattern of the fitting pad is a pattern symmetrical about the center point.

5. The conformable gasket of claim 4, wherein, The deformation part comprises a ridge part extending from the center point to the vertex, and the thickness of the ridge part decreases from the center point to the vertex.

6. The conformable gasket of claim 5, wherein, Among the four vertexes, two ridge parts corresponding to two vertexes arranged at opposite angles form a first connecting ridge, and two ridge parts corresponding to two vertexes arranged at opposite angles form a second connecting ridge, the thickness of the first connecting ridge decreases from the middle part of the first connecting ridge to the two ends of the first connecting ridge, and the thickness of the second connecting ridge decreases from the middle part of the second connecting ridge to the two ends of the second connecting ridge; In the plan view of the fitting pad, the first connecting ridge and the second connecting ridge intersect at the center point, and the pattern formed by the first connecting ridge and the second connecting ridge is symmetrical about the center point.

7. The conformable gasket of claim 5, wherein, The four sides comprise two first sides and two second sides, the length of the first side is greater than the length of the second side; The middle part of the first side is recessed towards the center point and forms a first inner recessed corner; The middle part of the second side is recessed towards the center point and forms a second inner recessed corner, and the angle of the first inner recessed corner is greater than the angle of the second inner recessed corner.

8. The conformable gasket of claim 7, wherein, The first side edge comprises two first straight edges connected with each other, the first straight edges are connected with adjacent top corners, and the connection part of the two first straight edges forms a middle part of the first side edge, and the connection part of the two first straight edges is recessed towards the center point and forms the first inner recessed corner; The second side edge comprises two second straight edges connected with each other, the second straight edges are connected with adjacent top corners, and the connection part of the two second straight edges forms a middle part of the second side edge, and the connection part of the two second straight edges is recessed towards the center point and forms the second inner recessed corner; In one of the deformation parts, the first straight edge and the second straight edge connected with the top corner corresponding to the deformation part form an edge of the deformation part.

9. The conformable gasket of claim 8, wherein, In one of the deformation parts, a ridge line is formed on the top surface of the ridge part, the ridge line extends from the center point to the top corner, and the distance from the ridge line to the base surface at the part of the center point is greater than the distance from the ridge line to the base surface at the part of the top corner. The first curve is formed between the ridge line and the first straight edge, the second curve is formed between the ridge line and the second straight edge, and the curvature of the first curve is greater than the curvature of the second curve.

10. The conformable gasket of claim 9, wherein, The second curve comprises a first connecting surface, a second connecting surface and a third connecting surface connected with each other, the first connecting surface, the second connecting surface and the third connecting surface are arranged from the center point to the second straight edge, and the first connecting surface is located between the second connecting surface and the first curve. The first connecting surface forms a first inclination angle with the base surface, the second connecting surface forms a second inclination angle with the base surface, the third connecting surface forms a third inclination angle with the base surface, the first inclination angle is smaller than the second inclination angle, and the second inclination angle is smaller than the third inclination angle.

11. The conformable gasket of claim 10, wherein, One end of the second connecting surface extends to the top corner, and in the plan view of the adhesive pad, the pattern of the part of the second connecting surface extending to the top corner is a rounded corner.

12. The conformable gasket of claim 10, wherein, The second curve further comprises a fourth connecting surface connected to the side of the third connecting surface away from the second connecting surface, the second straight edge comprises a first sub-segment and a second sub-segment connected with each other, the first sub-segment forms an edge of the third connecting surface, and the second sub-segment forms an edge of the fourth connecting surface. The fourth connecting surface forms a fourth inclination angle with the base surface, and the third inclination angle is smaller than the fourth inclination angle.

13. The conformable gasket of any of claims 1-12, wherein, The adhesive pad further comprises a peripheral surface connecting the adhesive surface and the base surface, the peripheral surface comprises four side surfaces connected in a loop, one side surface connects adjacent two top corners, and the middle part of the side surface is recessed towards the center of the adhesive pad.

14. The conformable gasket of any of claims 2-12, wherein, In the first mode of the adhesive pad, the distance from the adhesive surface at the part of the center point to the base surface is a first distance, the distance from the adhesive surface at the part of the top corner to the base surface is a second distance, and the difference between the first distance and the second distance is a first difference. In the second form of the conforming pad, a distance from the conforming surface at the center point to the base is a third distance, a distance from the conforming surface at the top corner to the base is a fourth distance, a difference between the first distance and the second distance is a second difference, and the second difference is less than the first difference; wherein the conforming pad is deformable from the first form to the second form under a pressure along a thickness direction of the conforming pad; In the process of deforming the conforming pad from the first form to the second form, a difference between the distance from the conforming surface at the center point to the base and the distance from the conforming surface at the top corner to the base decreases.

15. The conformable gasket of claim 14, wherein, In the second form of the conforming pad, a distance from the center point to a middle portion of the side edge is a first distance; In the third form of the conforming pad, a distance from the center point to the middle portion of the side edge is a second distance, and the second distance is greater than the first distance; wherein the conforming pad is deformable from the second form to the third form under a pressure along a thickness direction of the conforming pad; In the process of deforming the conforming pad from the second form to the third form, the distance from the center point to the middle portion of the side edge decreases.

16. The conformable gasket of claim 15, wherein, In the third form of the conforming pad, In a plan view of the conforming pad, the pattern of the side edge is a straight line shape.

17. An application device characterized by comprising: The conforming device is used for conforming a flexible screen and a curved cover plate, and the conforming device comprises: The conforming pad according to any one of claims 1-16; and A traction film is arranged between the conforming pad and the curved cover plate, and is used for carrying the flexible screen. The center point is arranged corresponding to a middle portion of the flexible screen and a middle portion of the curved cover plate, and the four top corners are arranged corresponding to four corners of the flexible screen and four corners of the curved cover plate.

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