Anti-dazzle film and manufacturing method therefor

An anti-glare film and anti-glare layer technology, applied in coatings, instruments, electrical components, etc., can solve the problems of reducing glare, easy to produce glare, difficult anti-glare, etc., and achieve both anti-glare and glare resistance, Excellent haze and sharpness, and the effect of suppressing blurring of characters

Active Publication Date: 2014-05-07
DAICEL CHEM IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] But, with regard to the anti-glare film of patent document 3 and 4, in the resolution higher than 150ppi high-definition display device (for example: have the liquid crystal display device of 200ppi above resolution or organic EL display device etc.), cannot maintain Anti-glare while reducing glare
In particular, there is a tendency that the farther the distance between the display surface and the anti-glare layer is, the easier it is to generate glare. However, as for the protection or protective film of the display device (the film that is pasted on the display surface by the user after purchase), due to the junction layer, etc., therefore, it is far away from the display surface, and it is difficult to suppress glare
Moreover, in high-definition display devices, organic EL panels are prone to glare due to the high luminous intensity of pixels, and it is difficult to achieve anti-glare properties and suppress blurring of characters at the same time. The anti-glare films of Patent Documents 3 and 4 cannot achieve both of the above characteristics.

Method used

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  • Anti-dazzle film and manufacturing method therefor
  • Anti-dazzle film and manufacturing method therefor
  • Anti-dazzle film and manufacturing method therefor

Examples

Experimental program
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Embodiment 1

[0184] An acrylic resin having a polymerizable unsaturated group in the side chain [made by adding 3,4-epoxycyclohexenyl methacrylate to a part of the carboxyl group of (meth)acrylic acid-(meth)acrylate copolymer The compound; "CYCLOMER P (ACA) 320M" manufactured by Daicel Co., Ltd., solid content: 49.6% by weight] 5.65 parts by weight, cellulose acetate propionate (degree of acetylation = 2.5%, degree of propionylation = 46%, poly Styrene-equivalent number average molecular weight: 75,000; "CAP-482-20" manufactured by Eastman Co., Ltd.) 1.2 parts by weight, polyfunctional acrylic UV-curable compound ("DPHA" manufactured by Daicel-Cytec Co., Ltd., viscosity: 5250 mPa·s) 4 Parts by weight, 2.77 parts by weight of an acrylic UV curable compound ("PET1A" manufactured by Daicel-Cytec, viscosity 1100mPa·s), and 0.53 parts by weight of a photoinitiator ("IRGACURE907" manufactured by BASF Corporation) were dissolved in methyl ethyl ketone (MEK ) in a mixed solvent of 25 parts by weig...

Embodiment 2

[0188] Acrylic resin [CYCLOMER P (ACA) 320M] 5.65 parts by weight, 1.2 parts by weight of cellulose acetate propionate (CAP-482-20), multifunctional acrylic UV curable compound ( DPHA) 6 parts by weight, 0.77 parts by weight of acrylic UV-curable compound containing silicone ("EB1360" manufactured by Daicel-Cytec Co., Ltd., viscosity: 2100 mPa·s), and 0.53 parts by weight of photoinitiator (IRGACUR907) were dissolved In a mixed solvent of 25 parts by weight of MEK and 12.15 parts by weight of 1-butanol. After casting this solution on a PET film (A4300) with a thickness of 100 μm using a wire-wound paint bar #24, it was placed in an oven at 90°C for 2 minutes to evaporate the solvent and form a coating with a thickness of about 7 μm . Then, the coating was irradiated with ultraviolet light from a high-pressure mercury lamp (manufactured by Eyegraphics) for about 10 seconds to perform UV curing.

[0189] Observation by reflection laser microscope, the results are as follows ...

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Abstract

The invention provides an anti-dazzle film with good balance between haze and clearness. When the anti-dazzle film is arranged on a highly-fine display device, the anti-dazzle property can be improved, dazzle can be greatly inhibited, and character indistinction can be prevented. Long and thin projection parts of a total length of greater than 100[mu]m are formed on the surface of an anti-dazzle layer of the anti-dazzle film when various resin constituents are separated from each other. More than one the abovementioned long and thin projection parts exist in every one square millimeter on the surface of the anti-dazzle layer. The abovementioned long and thin projection parts form a joint continuous phase structure, and the average diameter of meshes of the joint continuous phase structure is around from 1[mu]m to 70[mu]m. The anti-dazzle film has a transmission image definition of 70-100%, a haze of 10-40% and a total light transmissivity of 70-100%. The transmission image definition is detected using a mapping measuring instrument of an optical slit 0.5mm wide.

Description

technical field [0001] The present invention relates to an antiglare film suitable for preventing glare on display surfaces of various display devices and reflection of external light sources and a method for producing the same. Background technique [0002] In order to prevent the reflection of the outside scene on the display surface of liquid crystal display devices, organic electroluminescent (EL) display devices, etc., usually by coating the mixture of particles and binder resin or curable resin on the base material and forming Anti-glare properties are exhibited by preventing regular reflections with fine unevenness. However, for a high-definition display device with a fine pixel size, image quality degradation such as glare on the screen, blurred characters, etc., may occur with the conventional size of surface irregularities. That is, in the case of a high-definition display device, the size of the existing surface unevenness is close to the pixel size of the high-d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B1/11G02B5/02G02B1/04
CPCG02F1/1335G02B5/02C08L101/00H01L2224/02215H01L2221/6834H10K50/844H10K50/84H10K71/00
Inventor 林正树横山将史高桥启司
Owner DAICEL CHEM IND LTD
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