CN210605046U

CN210605046U - Composite prism film

Info

Publication number: CN210605046U
Application number: CN201921762122.9U
Authority: CN
Inventors: 丁利明; 白为为; 翟才金
Original assignee: Changzhou Huawei Advanced Material Co Ltd
Current assignee: Changzhou Huawei Advanced Material Co Ltd
Priority date: 2019-10-21
Filing date: 2019-10-21
Publication date: 2020-05-22
Anticipated expiration: 2029-10-21

Abstract

The utility model provides a composite prism membrane, includes first optical film, second optical film, and first optical film lower surface is provided with the adhesion layer, and first optical film includes first prism structure layer, first basement membrane layer, first back structural layer, is equipped with the diffusion particle in the first back structural layer, and second optical film includes second prism structure layer, second basement membrane layer, second back structural layer, and adhesion layer is passed and first back structural layer is inserted in second prism structure layer top. The second prism structural layer can assemble backlight light to the center, and first prism structural layer can further assemble light to the center, has promoted display brightness. The first back structure layer provided with the diffusion particles can correct light, reduce glare and increase the visual angle. The top of the second prism structure layer is inserted into the first back structure layer, so that the bonding effect is improved, the composite prism film is not easy to delaminate and peel in subsequent cutting, assembling and using, and the cutting yield and the module assembling yield are improved.

Description

Composite prism film

Technical Field

The utility model relates to a prism membrane especially relates to a compound prism membrane.

Background

The liquid crystal module industry has been developed as a new display industry, and the market demand of liquid crystal modules has increased year by year. The liquid crystal display technology is widely applied to display equipment such as mobile phones, tablet computers, displays and televisions. In order to ensure the image effect of the liquid crystal module, a plurality of optical films, such as prism films, diffusion films, microlens films, etc., must be used in the backlight module. In recent years, with the increasing demand for cost reduction and structure simplification of liquid crystal modules, microlens optical films with functions of diffusion films and brightness enhancement films and double-layer composite prism films with better brightness enhancement effects are successively introduced in the market to meet different liquid crystal module design requirements.

At present, a common method for compounding prism films is to stick two prism films together through an adhesive to form one compound prism film, but the stuck film has the problems of peeling, layering and the like due to low adhesive strength during subsequent cutting, assembly and use, so that the conditions of low film cutting yield, poor liquid crystal module picture and low module assembly yield are caused. Meanwhile, the defects of glare, low visual angle and the like can occur.

Disclosure of Invention

The utility model discloses follow-up cutting, equipment to the complex film that exists among the prior art, during the use because adhesive strength is not high and can produce and peel off, layering scheduling problem, cause the diaphragm to cut the condition appearance that the yield is on the low side, the liquid crystal module picture appears harmfully, module equipment yield is low. Simultaneously, the defects of glare, low visual angle and the like can occur, and a novel composite prism film is provided.

In order to solve the technical problem, the utility model discloses a following technical scheme realizes:

the utility model provides a composite prism membrane, includes first optical film, second optical film, first optical film lower surface is provided with the adhesion layer, first optical film passes through the adhesion layer with the second optical film is connected, first optical film includes first prism structural layer, first base film layer, first back structural layer, be provided with the diffusion particle in the structural layer of first back, the lower surface of first back structural layer with the adhesion layer is connected, the second optical film includes second prism structural layer, second base film layer, second back structural layer, second prism structural layer top is passed the adhesion layer inserts in the structural layer of first back.

The adhesion layer is arranged to combine the first optical film and the second optical film to form a composite film, and the formed composite film has high color gamut and high brightness enhancement effect. The second prism structural layer can assemble backlight light to the center to very big promotion shows luminance, and first prism structural layer can further assemble light to the center simultaneously, thereby has further promoted and has shown luminance. The first back structure layer provided with the diffusion particles can correct light rays into a uniform surface light source so as to achieve the effect of optical diffusion, reduce glare and increase the visual angle. The top of the second prism structure layer penetrates through the adhesion layer and is inserted into the first back structure layer, so that the bonding effect is improved, the composite prism film is not prone to layering, stripping and other problems in subsequent cutting, assembling and using, and the cutting yield and the module assembling yield are improved.

Preferably, in the composite prism film, the thickness of the first back structure layer is 2 to 8 μm, and the haze of the lower surface of the first back structure layer is 5% to 60%.

The thickness of the first back structure layer with the thickness of 2-8 microns is effectively reduced under the condition that the penetrability of light is not influenced, and the light is more uniform due to the haze of the lower surface of the first back structure layer with the thickness of 5% -60%.

Preferably, in the composite prism film, the depth d of the second prism structure layer inserted into the first back structure layer is 1 to 5 μm.

The insertion depth d of 1-5 mu m enhances the bonding strength to the maximum extent under the condition of not influencing the luminance of the composite prism film, reduces the thickness of the composite prism film to the maximum extent, enables the composite prism film not to be layered or peeled off easily in subsequent cutting, assembling and using, and improves the cutting yield and the module assembling yield.

Preferably, in the composite prism film, the adhesive layer is made of any one of acrylate resin, urethane acrylate resin, polyester acrylate resin and epoxy acrylate resin, and the thickness of the adhesive layer is 1-10 μm.

The materials are used as the forming materials of the adhesion layer, so that the adhesion effect between the first optical film and the second optical film can be effectively guaranteed on the premise that the light penetrability is not influenced, and the thickness of the composite prism film is reduced to the greatest extent by the thickness of the adhesion layer of 1-10 micrometers under the condition that the adhesion effect between the first optical film and the second optical film is not influenced.

Preferably, in the composite prism film, the first base film layer is made of polyethylene terephthalate, and the thickness of the first base film layer is 38-300 μm.

The polyethylene glycol terephthalate is selected as the material of the first base film layer, so that the first prism structure layer can be effectively borne on the premise of not influencing the penetrability of light, the first base film layer with the thickness of 38-300 mu m can effectively reduce the thickness of the composite prism film on the premise of not influencing the penetrability of light.

Preferably, in the composite prism film, an included angle a between two side edges of the prism of the first prism structure layer is 70 to 100 °.

The included angle a between two side edges of the first prism structure layer is set to be 70-100 degrees so as to obtain the optimal brightness enhancement effect, and therefore the display brightness of the screen is further improved.

Preferably, in the composite prism film, the second prism structure layer is made of acrylate resin, epoxy acrylic resin, polyurethane acrylic resin, polyester acrylic resin or polyether acrylic resin.

The second layer prism structure layer is made of the materials, and can be quickly cured and formed through UV curing, the materials are high in refractive index, high in light source penetration rate, good in excellent performances such as fullness, gloss, hardness, solvent resistance and weather resistance, and free of color change and yellowing during high-temperature baking, and the performance quality of products is further improved.

Preferably, in the composite prism film, the second back structure layer is made of acrylate or acrylic resin.

The second back structure layer is used as a terminal application part and is in direct contact with the diffusion sheet or the diffusion plate, the second back structure layer and the diffusion sheet or the diffusion plate are in mutual touch friction in the using process, and the materials can effectively reduce scratch damage and protect products.

Preferably, in the composite prism film, an included angle between the prism direction of the first prism structure layer and the prism direction of the second prism structure layer is 45 ° to 135 °.

The included angle between the trend of the prism in the first prism structure layer and the trend of the prism in the second prism structure layer is set to be 45-135 degrees, so that a better brightening effect can be brought, and the design requirements of more customers can be met.

Preferably, in the composite prism film, an included angle of 90 ° is formed between the prism direction of the first prism structure layer and the prism direction of the second prism structure layer.

The brightening effect brought by the selection of the angle is optimal.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a partially enlarged view of a portion a of fig. 1.

Detailed Description

The invention will be described in further detail with reference to the accompanying drawings 1-2 and the detailed description, which are not intended to limit the invention:

example 1

As shown in fig. 1 and 2, a composite prism film includes a first optical film 1 and a second optical film 3, wherein an adhesion layer 2 is disposed on a lower surface of the first optical film 1, the first optical film 1 is connected to the second optical film 3 through the adhesion layer 2, the first optical film 1 includes a first prism structure layer 11, a first base film layer 12, and a first back structure layer 13, diffusion particles 14 are disposed in the first back structure layer 13, a lower surface of the first back structure layer 13 is connected to the adhesion layer 2, the second optical film 3 includes a second prism structure layer 31, a second base film layer 32, and a second back structure layer 33, and a top of the second prism structure layer 31 passes through the adhesion layer 2 and is inserted into the first back structure layer 13.

When the prism structure is used, light sequentially passes through the second back structure layer 33, the second base film layer 32, the second prism structure layer 31, the adhesion layer 2, the first back structure layer 13 and the first base film layer 12, and finally is emitted from the first prism structure layer 11. The first back structure layer 13 provided with the diffusion particles 14 can modify light into a uniform surface light source to achieve an optical diffusion effect, reduce glare and increase a visual angle. The top of the second prism structure layer 31 penetrates through the adhesion layer 2 and is inserted into the first back structure layer 13, so that the adhesive strength is greatly improved, the composite prism film is not easy to delaminate and peel in subsequent cutting, assembling and using, and the cutting yield and the module assembling yield are improved.

Preferably, the thickness of the first back structure layer 13 is 2 to 8 μm, and the haze of the lower surface of the first back structure layer 13 is 5% to 60%.

Preferably, the second prism structure layer 31 is inserted into the first rear structure layer 13 to a depth d of 1 to 5 μm.

Preferably, the material of the adhesive layer 2 is any one of acrylate resin, urethane acrylate resin, polyester acrylate resin and epoxy acrylate resin, and the thickness of the adhesive layer 2 is 1-10 μm.

Preferably, the material of the first base film layer 12 is polyethylene terephthalate, and the thickness of the first base film layer 12 is 38 to 300 μm.

Preferably, an included angle a between two side edges of the prism of the first prism structure layer 11 is 70 to 100 °.

Preferably, the second prism structure layer 31 is made of acrylate resin, epoxy acrylic resin, polyurethane acrylic resin, polyester acrylic resin or polyether acrylic resin.

Preferably, the material of the second back structure layer 33 is acrylate or acrylic resin.

Preferably, the prism direction of the first prism structure layer 11 and the prism direction of the second prism structure layer 31 form an included angle of 45 ° to 135 °.

Preferably, the prism direction of the first prism structure layer 11 and the prism direction of the second prism structure layer 31 form an included angle of 90 °.

In short, the above description is only a preferred embodiment of the present invention, and all the equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the present invention.

Claims

1. A composite prismatic film comprising a first optical film (1), a second optical film (3), characterized in that: the lower surface of the first optical film (1) is provided with an adhesion layer (2), the first optical film (1) is connected with the second optical film (3) through the adhesion layer (2), the first optical film (1) comprises a first prism structure layer (11), a first base film layer (12) and a first back structure layer (13), diffusion particles (14) are arranged in the first back structure layer (13), the lower surface of the first back structure layer (13) is connected with the adhesion layer (2), the second optical film (3) comprises a second prism structure layer (31), a second base film layer (32) and a second back structure layer (33), and the top of the second prism structure layer (31) penetrates through the adhesion layer (2) and is inserted into the first back structure layer (13).

2. A composite prismatic film as recited in claim 1, wherein: the thickness of the first back structure layer (13) is 2-8 mu m, and the haze of the lower surface of the first back structure layer (13) is 5% -60%.

3. A composite prismatic film as recited in claim 1, wherein: the second prism structure layer (31) is inserted into the first back structure layer (13) to a depth d of 1-5 μm.

4. A composite prismatic film as recited in claim 1, wherein: the adhesive layer (2) is made of any one of acrylate resin, polyurethane acrylate resin, polyester acrylate resin and epoxy acrylate resin, and the thickness of the adhesive layer (2) is 1-10 mu m.

5. A composite prismatic film as recited in claim 1, wherein: the first base film layer (12) is made of polyethylene terephthalate, and the thickness of the first base film layer (12) is 38-300 mu m.

6. A composite prismatic film as recited in claim 2, wherein: the included angle a between two side edges of the prism of the first prism structure layer (11) is 70-100 degrees.

7. A composite prismatic film as recited in claim 1, wherein: the second prism structure layer (31) is made of acrylate resin, epoxy acrylic resin, polyurethane acrylic resin, polyester acrylic resin or polyether acrylic resin.

8. A composite prismatic film as recited in claim 1, wherein: the second back structure layer (33) is made of acrylate or acrylic resin.

9. A composite prismatic film as recited in claim 1, wherein: the prism direction of the first prism structure layer (11) and the prism direction of the second prism structure layer (31) form an included angle of 45-135 degrees.

10. A composite prismatic film as recited in claim 9, wherein: the prism direction of the first prism structure layer (11) and the prism direction of the second prism structure layer (31) form an included angle of 90 degrees.