CN-121995562-A - Anti-glare polarizer capable of inhibiting flash point, manufacturing method and display device

CN121995562ACN 121995562 ACN121995562 ACN 121995562ACN-121995562-A

Abstract

The utility model provides an inhibit flash point formula anti-dazzle polaroid, including from the top down superimposed third protection film, haze function gluing agent layer, first protection film, upside first gluing agent layer, polarizing film layer, downside first gluing agent layer, second protection film, second gluing agent layer, release film, haze function gluing agent layer includes diffusion particle and matrix, diffusion particle evenly distributed in the matrix, diffusion particle is configured into solid sphere, haze function gluing agent layer's haze value is 5%. About.70%, haze function gluing agent layer's thickness is 5 μm≤D≤50 μm, diffusion particle's particle diameter d=1 μm ~50 μm, and diffusion particle's refractive index is different with the refractive index of matrix, diffusion particle is one of organic particle and inorganic particle. The polaroid provided by the invention can inhibit the negative effect of flash point generated by matching the anti-dazzle polaroid with a high-pixel-density display.

Inventors

YANG SISHENG
ZHANG JIANJUN
GUO XIANG
WEI YICHAO
HAO XIANG
LI HANYU
TANG WENXUE
Yin Lingyuan
LI XIAOTING
DUAN JICHENG

Assignees

深圳市三利谱光电技术有限公司

Dates

Publication Date: 20260508
Application Date: 20260316

Claims (10)

1. The anti-glare polaroid capable of inhibiting flash point is characterized by comprising a polarizing film layer (1), an upper first adhesive layer (2) coated on the upper surface of the polarizing film layer (1), a lower first adhesive layer (3) coated on the lower surface of the polarizing film layer (1), a first protective film (4) compounded on the upper side of the polarizing film layer (1) through the upper first adhesive layer (2), a second protective film (5) compounded on the lower side of the polarizing film layer (1) through the lower first adhesive layer (3), a second adhesive layer (6) coated on the lower surface of the second protective film (5), a release film (7) compounded on the lower side of the second protective film (5) through the second adhesive layer (6), a haze functional adhesive layer (8) coated on the upper surface of the first protective film (4) and a third protective film (9) compounded on the upper side of the first protective film (4) through the haze functional adhesive layer (8); The adhesive used by the haze functional adhesive layer (8) is pressure-sensitive adhesive, the haze functional adhesive layer (8) comprises diffusion particles (10) and a matrix (82), the diffusion particles (10) are uniformly distributed in the matrix (82), the diffusion particles (10) are configured into solid spheres, the haze value of the haze functional adhesive layer (8) is 5% -70%, and the thickness of the haze functional adhesive layer (8) is 5 mu m or less and D or less than 50 mu m; the particle diameter d=1-50 mu m of the diffusion particles (10), the refractive index of the diffusion particles (10) is different from that of the matrix, the diffusion particles (10) are one or more of polymethyl methacrylate particles, polybutyl methacrylate particles, polystyrene particles, polycarbonate particles and acrylic-styrene copolymer particles, and the inorganic particles are one or more of silicon dioxide particles, titanium dioxide particles, barium sulfate particles, zinc dioxide particles, silicon carbide particles, silicon nitride particles, aluminum oxide particles, calcium sulfate particles, calcium carbonate particles, potassium titanate particles and aluminum borate particles.
2. The anti-glare polarizer of claim 1, wherein the refractive index n=1.49 to 1.54 of the organic fine particles of polymethyl methacrylate, poly-n-butyl methacrylate, or acrylic-styrene copolymer.
3. The anti-glare polarizer of claim 1, wherein the refractive index n=1.58 to 1.59 of the organic fine polystyrene particles or the polycarbonate particles has an actual particle size distribution of 4 to 6%, and the flash point is medium.
4. The anti-glare polarizer of claim 1, wherein the refractive index n=1.46 to 1.59 of the fine silica particles or fine alumina particles is inorganic particles.
5. The anti-glare polarizer of claim 1, wherein the spatial frequency v of the diffusing particles (10) satisfies 0.25 μm -1 ≤v≤1.2μm -1 .
6. The method for manufacturing a flash point suppressing type antiglare polarizer according to claim 1, comprising the steps of: step S1, coating an upper first adhesive layer (2) on the lower surface of a first protective film (4), coating a lower first adhesive layer (3) on the upper surface of a second protective film (5), and then respectively compounding the first protective film (4) and the second protective film (5) on the upper side and the lower side of a polarizing film layer (1); Step S2, coating a second adhesive layer (6) on the upper surface of the release film (7), and compounding the release film (7) coated with the second adhesive layer (6) on the lower side of the second protection film (5); And S3, coating the haze functional adhesive layer (8) mixed with the diffusion particles (10) on the upper surface of the first protective film (4), and compounding the first protective film (4) coated with the haze functional adhesive layer (8) with the third protective film (9).
7. The method for manufacturing the anti-glare polaroid with flash point inhibition according to claim 6, wherein in the step S1, the upper side first adhesive layer (2) and the lower side first adhesive layer (3) are uniformly coated on the joint surfaces of the first protective film (4) and the second protective film (5) through a precise slit coating head, pre-curing is carried out under the condition of pre-heating pressure, the solvent in the upper side first adhesive layer (2) and the lower side first adhesive layer (3) volatilizes more than 60%, the first protective film (4) and the second protective film (5) coated with the adhesive are synchronously fed into a compounding station in a roll-to-roll mode, the polarized film layer (1) between the two is at a 95 ℃ oven temperature, the precise polaroid structure is formed by the first protective film (4), the polarized film layer (1) and the second protective film (5) under the condition of 0.5MPa compounding rolling, and the basic three-layer lamination process is completed through the steps and related three-layer compound film structure.
8. The method for manufacturing the anti-glare polaroid with flash point type according to claim 6, wherein in the step S2, a second adhesive layer (6) with viscosity of 800mPa.s is uniformly coated on a silicone oil release surface of a release film (7) in a slit coating mode, a coating gap of 2.6mm and a coating speed of 20m/min are set, so that the thickness of an adhesive layer is precisely controlled to be 16 mu m+/-1 mu m, then the release film (7) coated with the second adhesive layer (6) is immediately pre-cured through a heating oven, the adhesive surface is in a dry state, the solvent residue is reduced to 0.8%, the release film (7) and a second protective film (5) attached to the outside of a polarizing film layer (1) are precisely aligned and compounded in a roll-to-roll mode, the second protective film (5) is synchronously fed into a compound press roll under the condition of 150N reverse tension, the compound press roll is completed under the compound speed condition of 20m/min, after the compound press roll is completed, the multilayer structure is attached to 32 ℃ at the temperature, the humidity of 65% RH is cured, the second adhesive layer (7) is completely attached to the polarizing film (6) in a curing environment, and a finished adhesive (7) is completely attached to the side of the adhesive layer (7) through a first adhesive layer (7) in a curing step) and a finished adhesive (3), and a finished adhesive (step) is completely-finished at the side is formed, and the adhesive layer (7) is attached to the second adhesive layer (7 layer (a side layer) and a side layer (a layer) (has).
9. The method for manufacturing the anti-glare polaroid with flash point inhibition according to claim 6, wherein in the step S3, a haze functional adhesive layer (8) with viscosity of 800mPa.s and a haze value of 65% is uniformly coated on the outer side surface of a first protective film (4) through a precise slit coating or micro gravure coating mode, a slit coating head coating gap and a coating speed are set, parameters such as an adhesive layer thickness or parameters such as the number of micro gravure rollers of the micro gravure coating head, a gravure depth and a coating speed are set, the thickness of a dried adhesive layer is controlled to be 5-50 mu m, a heating oven is used for pre-curing, the adhesive surface is enabled to reach a dry state, the solvent residue is reduced to be 0.8%, after the coating is completed, the multilayer structure is kept stand and cured for 4-7 days in a humidity environment of 32 ℃ and 65% RH, the haze functional adhesive layer (8) is fully crosslinked, the first protective film (4) coated with the haze functional adhesive layer (8) is subjected to a composite process of laminating the adhesive layer at a composite temperature of 20-20 MPa at a composite temperature of the composite film of the two layers and a relative humidity of 20 ℃ under a relative temperature of the composite process conditions of 150N and the three protective films subjected to alkaline pre-treatment or the three protective films subjected to the alkaline pre-treatment, finally, the step of curing the haze functional adhesive layer is finished, and the nine-layer composite polaroid finished coiled material which is formed by a release film (7), a second adhesive layer (6), a second protective film (5), a lower side first adhesive layer (3), a polarizing film layer (1), an upper side first adhesive layer (2), a first protective film (4), a haze functional adhesive layer (8) and a third protective film (9) is finally obtained.
10. A display device comprising the anti-glare polarizer of any one of claims 1 to 5.

Description

Anti-glare polarizer capable of inhibiting flash point, manufacturing method and display device Technical Field The invention relates to the field of polaroids, in particular to a flash point-inhibiting anti-dazzle polaroid, a manufacturing method and a display device. Background The glare of the screen is caused by the visual disturbance ‌ formed by the reflection of light on the surface of the screen, which reduces the contrast and color saturation of the display contents and causes visual fatigue. Especially in outdoor situations, the glare often leaves the person unable to recognize what is displayed on the display screen. The polarizer for the display commonly used is usually coated with a layer of coating with particles on a protective film on one side of a polarizing film, so that the polarizer can realize an anti-dazzle effect. The glare is scattered by the microstructure of the protective film on the polarizing film, so that the glare can be effectively reduced. The particle-bearing coating (scattering layer) on the protective film, while effective in reducing glare, is accompanied by a new negative effect "flash point" (flash point) that negatively affects the edges and details of the image frame to the presented image, thereby reducing the sharpness of the displayed image. The flash point is the result of refractive, diffractive and scattering optical interactions between the pixel array of the display screen and the polarizer anti-glare layer. The higher pixel density of the display screen (the current partial product is more than 500 PPI) is combined with the scattering anti-dazzle layer on the surface of the display polaroid, so that the negative effect of flash point can be more obvious when the display screen is directly seen. With the change of the observation direction and the position, the brightness, the color and the position of the flash point are changed. This negative effect is exacerbated as the industry evolves to increase the resolution (pixel density) of the display. Therefore, in order to suppress the negative effect of the flash point on the display screen, the corresponding anti-glare polarizer needs to be matched with the display with the corresponding pixel density, so that the flash point is suppressed to achieve a better display effect. The effect of inhibiting flash point of the anti-dazzle polaroid matched with a display with high pixel density in the current market cannot meet the related requirements. Disclosure of Invention The invention aims to solve the technical problems of overcoming the defects in the prior art and providing an anti-dazzle polaroid capable of inhibiting flash points, a manufacturing method and a display device. In order to solve the technical problems, the invention provides a flash point-inhibiting anti-dazzle polaroid, which comprises a polarizing film layer, an upper first adhesive layer coated on the upper surface of the polarizing film layer, a lower first adhesive layer coated on the lower surface of the polarizing film layer, a first protective film compounded on the upper side of the polarizing film layer through the upper first adhesive layer, a second protective film compounded on the lower side of the polarizing film layer through the lower first adhesive layer, a second adhesive layer coated on the lower surface of the second protective film, a release film compounded on the lower side of the second protective film through the second adhesive layer, a haze functional adhesive layer coated on the upper surface of the first protective film and a third protective film compounded on the upper side of the first protective film through the haze functional adhesive layer; The adhesive used in the haze functional adhesive layer is pressure-sensitive adhesive, the haze functional adhesive layer comprises diffusion particles and a matrix, the diffusion particles are uniformly distributed in the matrix, the diffusion particles are configured into solid spheres, the haze value of the haze functional adhesive layer is 5% -70%, and the thickness of the haze functional adhesive layer is 5 mu m or less and D or less and 50 mu m or less; The particle diameter d=1-50 μm, and the refractive index of the diffusion particles is different from that of the matrix, the diffusion particles are one of organic particles and inorganic particles, wherein the organic particles are one or more of polymethyl methacrylate particles, polybutyl methacrylate particles, polystyrene particles, polycarbonate particles and acrylic-styrene copolymer particles, and the inorganic particles are one or more of silicon dioxide particles, titanium dioxide particles, barium sulfate particles, zinc dioxide particles, silicon carbide particles, silicon nitride particles, aluminum oxide particles, calcium sulfate particles, calcium carbonate particles, potassium titanate particles and aluminum borate particles. The above-mentioned technical means is further defined in that the refract