Structure for solving foam layering

Abstract

The utility model discloses a structure for solving foam layering, which comprises a foam body, one side of the foam body is used for being adhered to a display screen, the other side of the foam body is used for being adhered to a backlight, the foam body is formed by splicing four double-sided adhesive tapes in a square shape, release films are adhered to the two sides of the foam body, and the two sides of the foam body are respectively provided with an adhesive tape. And non-viscous areas are arranged at four corners, relative to the foam body, of the release film on one side, used for being attached to the display screen, of the foam body. The structure has the effect of avoiding the layering phenomenon of the foam body caused by the foam body when the high-viscosity first release film is torn off.

Description

Technical Field

[0001] The utility model relates to the technical field of foam, in particular to a structure for solving the delamination of foam. Background Art

[0002] A display module generally includes a cover plate, a display screen and a backlight. To solve the mura problem, a foam tape is usually directly used between the backlight and the display screen. The foam has a certain elasticity to relieve the mura caused by the unevenness of the lower surface of the display screen. Mura refers to the uneven brightness of the display. When the foam comes in, release films need to be attached to both sides. Since the release film has adhesiveness, it is easy to cause the delamination of the foam when tearing off the release film on the foam, thus damaging the structure of the foam. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a structure for solving the delamination of foam.

[0004] The purpose of the utility model is realized by the following technical solutions:

[0005] A structure for solving the delamination of foam, comprising: a foam body, one side of the foam body is used for pasting with the display screen, the other side of the foam body is used for pasting with the backlight, the foam body is formed by splicing four double-sided adhesives into a square shape, release films are attached to both sides of the foam body, and non-adhesive areas are provided at the four corners of the release film on the side of the foam body for attaching to the display screen relative to the foam body.

[0006] In one implementation, both the upper and lower sides of the foam body are provided with adhesive glue, and the adhesive glue on the upper and lower sides of the foam body is used for attaching to the display screen and the backlight respectively.

[0007] In one implementation, the side of the foam body for pasting with the display screen is provided with weak adhesive glue, and the side of the foam body for pasting with the backlight is provided with strong adhesive glue.

[0008] In one implementation, the release films on both sides of the foam body are respectively a first release film and a second release film. The first release film is located on the side away from the foam body of the weak adhesive glue, and the second release film is located on the side away from the foam body of the strong adhesive glue.

[0009] In one implementation, both the side of the first release film facing the weak adhesive glue and the side of the second release film facing the strong adhesive glue are provided with adhesiveness.

[0010] In one embodiment, the side of the first release film facing the weakly adhesive glue has strong adhesion, the side of the second release film facing the strongly adhesive glue has weak adhesion, and the non-adhesive area is arranged on the side of the first release film facing the foam body.

[0011] In one embodiment, the non-adhesive area is arranged in a rectangular shape and covers the joint of two adjacent double-sided adhesives.

[0012] In one embodiment, the non-adhesive area is arranged at the corner of the non-adhesive area facing the foam body, and the two outer edges of the non-adhesive area are flush with the two outer edges of the corner of the foam body respectively.

[0013] In one embodiment, both the first release film and the second release film extend outwards with a tearing handle.

[0014] In one embodiment, a light-absorbing layer for absorbing light is arranged between the foam body and the strongly adhesive glue on one side thereof, and the light-absorbing layer is made of a black light-absorbing material.

[0015] Compared with the prior art, the present utility model has at least the following advantages:

[0016] A structure for solving the delamination of the foam in the present utility model sets non-adhesive areas at the four corners of the foam body on the first release film on the side where the foam body is adhered to the display screen. The non-adhesive areas prevent the four corners of the foam body from being lifted due to the strong adhesion of the first release film when the first release film is torn off, thus preventing the delamination of the foam body and not damaging the structure of the foam body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required to be used in the embodiments will be briefly introduced below.

[0018] Figure 1 It is a schematic diagram of the stacked structure of a structure for solving the delamination of the foam provided by the present utility model;

[0019] Figure 2 It is a schematic diagram of the structure of the foam body in a structure for solving the delamination of the foam provided by the present utility model;

[0020] Figure 3 It is a schematic diagram of the structure of the first release film in a structure for solving the delamination of the foam provided by the present utility model.

[0021] BRIEF DESCRIPTION OF THE DRAWINGS: 10. Foam body; 11. Double-sided adhesive; 12. Weakly adhesive glue; 13. Strongly adhesive glue; 20. First release film; 21. Non-adhesive area; 30. Second release film; 40. Tearing handle; 50. Light-absorbing layer. Detailed Implementation Manner

[0022] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings.

[0023] A structure for solving the problem of foam layer separation, referring to Figure 1 , includes a foam body 10. One side of the foam body 10 is used for pasting with the display screen, and the other side of the foam body 10 is used for pasting with the backlight. The foam body 10 is pasted between the display screen and the backlight, and can absorb the deformation from the backlight to reduce the problem of uneven brightness of the display screen caused by the deformation of the display screen.

[0024] Referring to Figure 1 and Figure 2 , the foam body 10 is a spliced double-sided adhesive 11 with a four-corner splicing structure, and the foam body 10 is formed by splicing four double-sided adhesives 11 into a square shape. Release films are attached to both sides of the foam body 10. Since the foam body 10 is formed by four-corner splicing, the connections at the four corners of the foam body 10 are not stable. When the release film is torn off, a force will be generated at the splicing joints of the four corners of the foam body 10, which is likely to cause the foam body 10 to be delaminated. Therefore, non-adhesive areas 2 It is provided at the four corners of the foam body 10.

[0025] Referring to Figure 1 , both the upper and lower sides of the foam body 10 are provided with adhesive gums for respectively fitting with the display screen and the backlight. The side of the foam body 10 pasted with the display screen is provided with a weak adhesive gum 12, and the side of the foam body 10 pasted with the backlight is provided with a strong adhesive gum 13.

[0026] Referring to Figure 1 and Figure 3 , the release films on both sides of the foam body 10 are respectively a first release film 20 and a second release film 30. The first release film 20 is located on the side of the weak adhesive gum 12 on the upper side of the foam body 10 away from the foam body 10, and the first release film 20 is used to protect the weak adhesive gum 12 that is not pasted with the display screen. The second release film 30 is located on the side of the strong adhesive gum 13 on the lower side of the foam body 10 away from the foam body 10, and the second release film 30 is used to protect the strong adhesive gum 13 that is not pasted with the backlight.

[0027] Further, referring to Figure 1 , both the side of the first release film 20 facing the weak adhesive gum 12 and the side of the second release film 30 facing the strong adhesive gum 13 are provided with adhesiveness, so that the first release film 20 and the second release film can be pasted on the foam body 10.

[0028] Further, referring to Figure 1, one side of the first release film 20 facing the weak adhesive 12 has strong adhesion, and one side of the second release film 30 facing the strong adhesive 13 has weak adhesion. Since the weak adhesive 12 of the foam body 10 is pasted to the display screen, when the first release film 20 has strong adhesion, when tearing off the first release film 20, the four corners of the foam body 10 may be lifted, causing the foam body 10 to delaminate. Therefore, non-adhesive areas 21 are provided at the four corners of the first release film 20 facing the foam body 10.

[0029] Refer to Figure 1 and Figure 3 , the non-adhesive areas 21 are arranged in a rectangle, and the non-adhesive areas 21 cover the splicing parts of two adjacent double-sided adhesives 11. The non-adhesive areas 21 are arranged facing the corners of the foam body 10, and the two outer edges of the non-adhesive areas 21 are flush with the two outer edges of the corners of the foam body 10 respectively. The non-adhesive areas 21 prevent the four corners of the foam body 10 from being lifted due to the strong adhesion of the first release film 20 when tearing off the first release film 20, thus preventing the delamination of the foam body 10 and not damaging the structure of the foam body 10.

[0030] Furthermore, refer to Figure 3 , on one side of the first release film 20 and the second release film 30, there are tear handles 40 extending outwards, and the tear handles 40 are used to facilitate the tearing off of the first release film 20 and the second release film 30.

[0031] Furthermore, refer to Figure 1 , between the foam body 10 and the strong adhesive 13 on one side of it, there is a light-absorbing layer 50 for light absorption. The light-absorbing layer 50 is made of a black light-absorbing material, such as nano-carbon black material. The light-absorbing layer 50 is used to prevent the light of the backlight from leaking out from the four side edges, thus affecting the display of the display screen.

[0032] On the first release film 20 on the side where the foam body 10 is pasted to the display screen, non-adhesive areas 21 are provided at the four corners of the foam body 10. The non-adhesive areas 21 prevent the four corners of the foam body 10 from being lifted due to the strong adhesion of the first release film 20 when tearing off the first release film 20, thus preventing the delamination of the foam body 10 and not damaging the structure of the foam body 10.

[0033] The above embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. A structure for solving the delamination of foam, characterized in that, Including: A foam body (10), one side of the foam body (10) is used for pasting with a display screen, the other side of the foam body (10) is used for pasting with a backlight, the foam body (10) is formed by splicing four double-sided adhesives (11) into a square shape, release films are attached to both sides of the foam body (10), and non-adhesive areas (21) are provided at the four corners of the foam body (10) relative to the release film on the side where the foam body (10) is used for attaching to the display screen.

2. The structure for solving the problem of foam delamination according to claim 1, wherein, Both the upper and lower sides of the foam body (10) are provided with adhesive gums, and the adhesive gums on the upper and lower sides of the foam body (10) are used for fitting with the display screen and the backlight respectively.

3. The structure for solving the problem of foam delamination according to claim 2, wherein One side of the foam body (10) for pasting with the display screen is provided with a weak adhesive gum (12), and one side of the foam body (10) for pasting with the backlight is provided with a strong adhesive gum (13).

4. A structure for solving the delamination of the foam according to claim 3, characterized in that, The release films on both sides of the foam body (10) are respectively a first release film (20) and a second release film (30), the first release film (20) is located on the side of the weak adhesive gum (12) away from the foam body (10), and the second release film (30) is located on the side of the strong adhesive gum (13) away from the foam body (10).

5. A structure for solving the delamination of the foam according to claim 4, characterized in that, Both the side of the first release film (20) facing the weak adhesive gum (12) and the side of the second release film (30) facing the strong adhesive gum (13) are provided with adhesiveness.

6. The structure for solving the delamination of the foam according to claim 5, wherein The side of the first release film (20) facing the weak adhesive gum (12) has strong adhesiveness, the side of the second release film (30) facing the strong adhesive gum (13) has weak adhesiveness, and the non-adhesive area (21) is provided on the side of the first release film (20) facing the foam body (10).

7. The structure for solving the problem of foam delamination according to claim 6, characterized in that, The non-adhesive area (21) is arranged in a rectangular shape, and the non-adhesive area (21) covers the splicing part of two adjacent double-sided adhesives (11).

8. A structure for solving the delamination of the foam according to claim 7, characterized in that, The non-adhesive area (21) is provided opposite to the corner of the foam body (10), and the two outer edges of the non-adhesive area (21) are respectively flush with the two outer edges of the corner of the foam body (10).

9. A structure for solving the delamination of the foam, as described in claim 4, characterized in that, Both the first release film (20) and the second release film (30) extend outwards with a tearing handle (40).

10. A structure for solving the delamination of the foam according to claim 3, characterized in that, An absorbent layer (50) for light absorption is provided between the foam body (10) and the strong adhesive gum (13) on one side thereof, and the absorbent layer (50) is made of a black light-absorbing material.

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