Multilayer optical laminating film

By introducing a combined structure of composite film group, outer coating, adhesive film, light-insulating film and edge-enveloping film into the optical bonding film, the light leakage problem during the adhesion process of optical bonding film is solved, and the astigmatism on the side is reduced and the stability of the optical component is improved.

CN223304376UActive Publication Date: 2025-09-05SUZHOU DONGSHAN NEW MATERIAL TECH CO LTD
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Patent Information

Application Number
CN202422456548.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-11
Publication Date
2025-09-05
Estimated Expiration
2034-10-11

AI Technical Summary

Technical Problem

Optical bonding films are prone to light leakage during pasting, which affects their performance.

Method used

The combined structure of composite film group, outer cover film, adhesive film, light-insulating film and edge-enveloping film is adopted. The light-insulating film is made of an opaque material and is wrapped around the outside of the composite film group, outer cover film and adhesive film. The release film designed with convex strips is easy to tear off and reduces the light transmittance on the sides.

Benefits of technology

It effectively reduces the astigmatism on the side of the optical bonding film and improves the stability and durability of the optical components.

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Abstract

The utility model discloses a multilayer optical laminating film, which relates to the field of optical films and comprises a composite film group, an outer laminating film, an adhesive film and a light insulation film, the outer laminating film is connected to the top of the composite film group, the adhesive film is connected to the bottom of the composite film group, the light insulation film is connected to the exteriors of the composite film group, the outer laminating film and the adhesive film, and an edge covering film is connected to the exterior of the light insulation film. The first release film is connected to the side, away from the composite film set, of the outer covering film, the second release film is connected to the side, away from the composite film set, of the adhesive film, and one side of the first release film and one side of the second release film are both connected with protruding strips. According to the utility model, the composite film group, the outer covering film, the adhesive film, the light insulation film and the edge covering film are matched for use, the light insulation film and the edge covering film are connected and sleeved outside the composite film group, the outer covering film and the adhesive film, and the light insulation film is made of a light-proof material; therefore, the astigmatism of the edge side of the optical laminating film consisting of the composite film group, the outer laminating film, the adhesive film, the light isolating film and the edge covering film is reduced.
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Description

Technical Field

[0001] The utility model relates to the field of optical films, in particular to a multi-layer optical bonding film. Background Art

[0002] Optical bonding film is a material used for bonding and encapsulating optical components. It can provide good optical performance stability and maintain no color change or degradation for a long time. At the same time, it has sufficient strength and adhesion to ensure the stability and durability of optical components.

[0003] Optical bonding films are usually used for display screens or lenses. When the optical bonding films are pasted on the display screens or lenses, light leakage usually occurs on the sides of the optical bonding films due to the light transmittance of the optical bonding films, thereby affecting the performance of the optical bonding films. Utility Model Content

[0004] The purpose of the present invention is to provide a multi-layer optical bonding film to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions: a multi-layer optical bonding film, comprising:

[0006] A composite membrane group, an outer covering membrane and an adhesive membrane, wherein the outer covering membrane is connected to the top of the composite membrane group and the adhesive membrane is connected to the bottom of the composite membrane group;

[0007] A light-isolating film and an edge-wrapping film, wherein the light-isolating film is connected to the outside of the composite film group, the outer covering film and the adhesive film, and the edge-wrapping film is connected to the outside of the light-isolating film;

[0008] A first release film and a second release film, wherein the first release film is connected to the side of the outer film facing away from the composite film group, and the second release film is connected to the side of the adhesive film facing away from the composite film group, and one side of the first release film and the second release film are both connected with a convex strip.

[0009] Preferably, the composite membrane group comprises:

[0010] a first base film and a first diffusion film, wherein the first diffusion film is connected to the outside of the first base film;

[0011] A second base film and a first prism film, wherein the first prism film is connected to the outside of the second base film.

[0012] Preferably, the first base film is located on the side of the second base film away from the first prism film, the first diffusion film is located on the side of the second base film facing the first base film, and the first prism film is located on the side of the second base film facing the outer cover film.

[0013] Preferably, the composite membrane group comprises:

[0014] a third base film and a second prism film, wherein the second prism film is connected to an exterior of the third base film;

[0015] A fourth base film and a second diffusion film, wherein the second diffusion film is connected to one side of the fourth base film.

[0016] Preferably, the third base film is located on the side of the fourth base film away from the outer film, the second diffusion film is located on the side of the fourth base film facing the outer film, and the second prism film is located on the side of the third base film facing the fourth base film.

[0017] Preferably, the composite membrane group comprises:

[0018] a fifth base film and a third prism film, wherein the third prism film is connected to the outside of the fifth base film;

[0019] a sixth base film and a third diffusion film, wherein the third diffusion film is connected to the outside of the sixth base film.

[0020] Preferably, the third prism film is located on the side of the fifth base film facing away from the adhesion film, the sixth base film is located on the side of the fifth base film facing the third prism film, and the third diffusion film is located on the side of the sixth base film facing the third prism film.

[0021] The technical effects and advantages of this utility model are:

[0022] The utility model utilizes the coordinated use of a composite film group, an outer covering film, an adhesive film, a light-isolating film and an edge-wrapping film. The light-isolating film and the edge-wrapping film are connected and sleeved on the outside of the composite film group, the outer covering film and the adhesive film, and the light-isolating film is made of an opaque material, thereby reducing the astigmatism of the edge of the optical bonding film composed of the composite film group, the outer covering film, the adhesive film, the light-isolating film and the edge-wrapping film. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0024] Figure 2 This is a partial front view of the internal structure of the first embodiment of the present invention.

[0025] Figure 3 This is a partial front view of the internal structure of the second embodiment of the present invention.

[0026] Figure 4 This is a partial front view of the internal structure of the third embodiment of the present invention.

[0027] In the figure: 1. Composite film group; 11. First base film; 12. First diffusion film; 13. Second base film; 14. First prism film; 15. Third base film; 16. Second prism film; 17. Fourth base film; 18. Second diffusion film; 19. Fifth base film; 110. Third prism film; 111. Sixth base film; 112. Third diffusion film; 2. Outer coating film; 3. Adhesive film; 4. Light-isolating film; 5. Edge film; 6. First release film; 7. Second release film; 8. Raised strips. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Example 1

[0030] The utility model provides Figure 1-2 The multilayer optical bonding film shown includes a composite film group 1, an outer covering film 2, an adhesive film 3, a light-isolating film 4, an edge film 5, a first release film 6 and a second release film 7. The outer covering film 2 is connected to the top of the composite film group 1, the adhesive film 3 is connected to the bottom of the composite film group 1, the light-isolating film 4 is connected to the outside of the composite film group 1, the outer covering film 2 and the adhesive film 3, and the edge film 5 is connected to the outside of the light-isolating film 4. The light-isolating film 4 is made of an opaque material, so that the light-isolating film 4 and the edge film 5 are wrapped around the outside of the composite film group 1, the outer covering film 2 and the adhesive film 3, which can reduce the transmittance of the outer edges of the composite film group 1, the outer covering film 2 and the adhesive film 3. The composite film group 1, the outer covering film 2, the adhesive film 3, the light-isolating film 4 and the edging film 5 can be optically optical, and the overall shape of the composite film group 1, the outer covering film 2, the adhesive film 3, the light-isolating film 4 and the edging film 5 can be circular or square, the first release film 6 is connected to the side of the outer covering film 2 facing away from the composite film group 1, the second release film 7 is connected to the side of the adhesive film 3 facing away from the composite film group 1, and one side of the first release film 6 and the second release film 7 are connected with a convex strip 8, the first release film 6 and the second release film 7 can protect the outer covering film 2 and the adhesive film 3, and when the composite film group 1, the outer covering film 2, the adhesive film 3, the light-isolating film 4 and the edging film 5 are in use, the convex strip 8 can be used to tear off the first release film 6 and the second release film 7.

[0031] Furthermore, the composite film group 1 includes a first base film 11, a first diffusion film 12, a second base film 13 and a first prism film 14. The first diffusion film 12 is connected to the outside of the first base film 11, and the first prism film 14 is connected to the outside of the second base film 13. The first base film 11 is located on the side of the second base film 13 away from the first prism film 14, the first diffusion film 12 is located on the side of the second base film 13 facing the first base film 11, the first prism film 14 is located on the side of the second base film 13 facing the outer film 2, and the first prism film 14 is located on the outside of the first diffusion film 12. The first prism film 14 and the first diffusion film 12 are both made of resin material.

[0032] Example 2

[0033] The utility model provides Figure 3 The multilayer optical bonding film shown includes a composite film group 1, an outer covering film 2, an adhesive film 3, a light-isolating film 4, an edge film 5, a first release film 6 and a second release film 7. The outer covering film 2 is connected to the top of the composite film group 1, the adhesive film 3 is connected to the bottom of the composite film group 1, the light-isolating film 4 is connected to the outside of the composite film group 1, the outer covering film 2 and the adhesive film 3, and the edge film 5 is connected to the outside of the light-isolating film 4. The light-isolating film 4 is made of an opaque material, so that the light-isolating film 4 and the edge film 5 are wrapped around the outside of the composite film group 1, the outer covering film 2 and the adhesive film 3, which can reduce the transmittance of the outer edges of the composite film group 1, the outer covering film 2 and the adhesive film 3. The composite film group 1, the outer covering film 2, the adhesive film 3, the light-isolating film 4 and the edging film 5 can be optically optical, and the overall shape of the composite film group 1, the outer covering film 2, the adhesive film 3, the light-isolating film 4 and the edging film 5 can be circular or square, the first release film 6 is connected to the side of the outer covering film 2 facing away from the composite film group 1, the second release film 7 is connected to the side of the adhesive film 3 facing away from the composite film group 1, and one side of the first release film 6 and the second release film 7 are connected with a convex strip 8, the first release film 6 and the second release film 7 can protect the outer covering film 2 and the adhesive film 3, and when the composite film group 1, the outer covering film 2, the adhesive film 3, the light-isolating film 4 and the edging film 5 are in use, the convex strip 8 can be used to tear off the first release film 6 and the second release film 7.

[0034] Furthermore, the composite film group 1 includes a third base film 15, a second prism film 16, a fourth base film 17 and a second diffusion film 18. The second prism film 16 is connected to the outside of the third base film 15, and the second diffusion film 18 is connected to one side of the fourth base film 17. The third base film 15 is located on the side of the fourth base film 17 away from the outer film 2, the second diffusion film 18 is located on the side of the fourth base film 17 facing the outer film 2, and the second prism film 16 is located on the side of the third base film 15 facing the fourth base film 17, that is, the second diffusion film 18 is located on the outside of the second prism film 16, and the second diffusion film 18 and the second prism film 16 are both made of resin material.

[0035] Example 3

[0036] The utility model provides Figure 4The multilayer optical bonding film shown includes a composite film group 1, an outer covering film 2, an adhesive film 3, a light-isolating film 4, an edge film 5, a first release film 6 and a second release film 7. The outer covering film 2 is connected to the top of the composite film group 1, the adhesive film 3 is connected to the bottom of the composite film group 1, the light-isolating film 4 is connected to the outside of the composite film group 1, the outer covering film 2 and the adhesive film 3, and the edge film 5 is connected to the outside of the light-isolating film 4. The light-isolating film 4 is made of an opaque material, so that the light-isolating film 4 and the edge film 5 are wrapped around the outside of the composite film group 1, the outer covering film 2 and the adhesive film 3, which can reduce the transmittance of the outer edges of the composite film group 1, the outer covering film 2 and the adhesive film 3. The composite film group 1, the outer covering film 2, the adhesive film 3, the light-isolating film 4 and the edging film 5 can be optically optical, and the overall shape of the composite film group 1, the outer covering film 2, the adhesive film 3, the light-isolating film 4 and the edging film 5 can be circular or square, the first release film 6 is connected to the side of the outer covering film 2 facing away from the composite film group 1, the second release film 7 is connected to the side of the adhesive film 3 facing away from the composite film group 1, and one side of the first release film 6 and the second release film 7 are connected with a convex strip 8, the first release film 6 and the second release film 7 can protect the outer covering film 2 and the adhesive film 3, and when the composite film group 1, the outer covering film 2, the adhesive film 3, the light-isolating film 4 and the edging film 5 are in use, the convex strip 8 can be used to tear off the first release film 6 and the second release film 7.

[0037] Furthermore, the composite film group 1 includes a fifth base film 19, a third prism film 110, a sixth base film 111 and a third diffusion film 112. The third prism film 110 is connected to the outside of the fifth base film 19, and the third diffusion film 112 is connected to the outside of the sixth base film 111. The third prism film 110 is located on the side of the fifth base film 19 facing away from the adhesive film 3, the sixth base film 111 is located on the side of the fifth base film 19 facing the third prism film 110, and the third diffusion film 112 is located on the side of the sixth base film 111 facing the third prism film 110, that is, the third prism film 110 and the third diffusion film 112 are arranged opposite to each other, and the third prism film 110 and the third diffusion film 112 are made of resin material.

[0038] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multilayer optical bonding film, characterized in that: include: A composite membrane group (1), an outer covering membrane (2) and an adhesive membrane (3), wherein the outer covering membrane (2) is connected to the top of the composite membrane group (1), and the adhesive membrane (3) is connected to the bottom of the composite membrane group (1); A light-isolating film (4) and an edge-wrapping film (5), wherein the light-isolating film (4) is connected to the outside of the composite film group (1), the outer covering film (2) and the adhesive film (3), and the edge-wrapping film (5) is connected to the outside of the light-isolating film (4); A first release film (6) and a second release film (7), wherein the first release film (6) is connected to the side of the outer covering film (2) facing away from the composite film group (1), and the second release film (7) is connected to the side of the adhesive film (3) facing away from the composite film group (1), and one side of each of the first release film (6) and the second release film (7) is connected to a convex strip (8).

2. The multilayer optical bonding film according to claim 1, characterized in that: The composite membrane group (1) comprises: A first base film (11) and a first diffusion film (12), wherein the first diffusion film (12) is connected to the outside of the first base film (11); A second base film (13) and a first prism film (14), wherein the first prism film (14) is connected to the outside of the second base film (13).

3. The multilayer optical bonding film according to claim 2, characterized in that: The first base film (11) is located on the side of the second base film (13) facing away from the first prism film (14), the first diffusion film (12) is located on the side of the second base film (13) facing the first base film (11), and the first prism film (14) is located on the side of the second base film (13) facing the outer covering film (2).

4. The multilayer optical bonding film according to claim 1, characterized in that: The composite membrane group (1) comprises: a third base film (15) and a second prism film (16), wherein the second prism film (16) is connected to the outside of the third base film (15); A fourth base film (17) and a second diffusion film (18), wherein the second diffusion film (18) is connected to one side of the fourth base film (17).

5. The multilayer optical bonding film according to claim 4, characterized in that: The third base film (15) is located on the side of the fourth base film (17) facing away from the outer film (2), the second diffusion film (18) is located on the side of the fourth base film (17) facing the outer film (2), and the second prism film (16) is located on the side of the third base film (15) facing the fourth base film (17).

6. The multilayer optical bonding film according to claim 1, characterized in that: The composite membrane group (1) comprises: a fifth base film (19) and a third prism film (110), wherein the third prism film (110) is connected to the outside of the fifth base film (19); A sixth base film (111) and a third diffusion film (112), wherein the third diffusion film (112) is connected to the outside of the sixth base film (111).

7. The multilayer optical bonding film according to claim 6, characterized in that: The third prism film (110) is located on the side of the fifth base film (19) facing away from the adhesive film (3), the sixth base film (111) is located on the side of the fifth base film (19) facing the third prism film (110), and the third diffusion film (112) is located on the side of the sixth base film (111) facing the third prism film (110).