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Transparent optical film comprising damage prevention layer having particles distributed therein

A technology of optical film and protective layer, which is applied in the field of light-transmitting optical film with a surface protective layer in which particles are distributed, and can solve problems such as irregular shape or picture, easy adhesion of impurities, and increased process defect rate

Active Publication Date: 2007-05-02
KOLON IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, when static electricity is generated due to friction during the handling process or assembly process, impurities are easy to adhere to the smooth surface arranged irregularly.
In the case that the prism structure or smooth surface is damaged or impurities adhere to it, the light will form an irregular shape or picture after passing through, and it will not be possible to display a uniform and clear image, which is the main reason for the increase in the defective rate of the process. one of the reasons

Method used

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  • Transparent optical film comprising damage prevention layer having particles distributed therein
  • Transparent optical film comprising damage prevention layer having particles distributed therein
  • Transparent optical film comprising damage prevention layer having particles distributed therein

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] 90 parts by weight of acrylic polyol and 10 parts by weight of isocyanate are used as solvents, dissolved in 300 parts by weight of methyl ethyl ketone and 200 parts by weight of toluene. Disperse 10 parts by weight of PMMA (polymethyl methacrylate) particles (average diameter of 5 microns, monodisperse particles) and 2 parts by weight of quaternary ammonium antistatic agent in the above solution. Afterwards, the obtained solution was coated on a surface with a thickness of 125 micrometers formed by a polyethylene terephthalate base film in a gravure manner, and dried at a temperature of 100° C. for 30 seconds to prepare a Sheet (Sheet), the sheet includes a protective layer including a portion with a thickness of 6 μm in which particles are distributed, and a portion with a thickness of 4 μm in which no particles are distributed.

[0059] On the opposite side of the protective layer of the plate, a mixture of 95 parts by weight of an acrylic-based ultraviolet curable r...

Embodiment 2

[0061] 90 parts by weight of acrylic polyol and 10 parts by weight of isocyanate are used as solvents, dissolved in 300 parts by weight of methyl ethyl ketone and 200 parts by weight of toluene. Disperse 20 parts by weight of PMMA particles (average diameter of 5 microns, monodisperse particles) and 2 parts by weight of quaternary ammonium-based antistatic agent in the above solution. The subsequent processing steps were carried out in the same manner as in Example 1 to produce an optical film.

Embodiment 3

[0063] 90 parts by weight of acrylic polyol and 10 parts by weight of isocyanate are used as solvents, dissolved in 300 parts by weight of methyl ethyl ketone and 200 parts by weight of toluene. Disperse 20 parts by weight of PMMA particles (average diameter of 5 microns, monodisperse particles) and 2 parts by weight of quaternary ammonium-based antistatic agent in the above solution.

[0064] Afterwards, different from the above-mentioned Example 1, one surface of a substrate film having a thickness of 125 micrometers formed of polyethylene terephthalate was coated in a gravure manner, and dried at a temperature of 100° C. After 30 seconds, a plate was produced, which included a protective layer including a portion having a thickness of 6 μm in which particles were distributed and a portion having a thickness of 2 μm in which no particles were distributed. In addition, on the opposite side of the protective layer of the plate, 95 parts by weight of acrylic-based ultraviolet c...

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Abstract

Disclosed herein is a transparent optical film, including an optically structured layer, which is a sheet formed of a transparent polymeric material and composed of a first surface having three-dimensional structures thereon and a second surface opposite the first surface, and a damage prevention layer formed on the second surface of the optically structured layer and composed of a transparent polymeric material and spherical organic or inorganic particles. The damage prevention layer has protruding surface portions formed by the particles protruding from the transparent polymeric material. The optical film of the current invention is advantageous because the prism structure and the opposite surface of the optical film are prevented from damage due to external impact, vibration and friction, and the attachment of impurities due to frictional static charges is prevented. Further, the front luminance and optical properties of the optical film are improved.

Description

[0001] current technology [0002] The present invention generally relates to an optical film suitable for a liquid crystal display device (LCD), in particular, the present invention relates to a transparent optical film suitable for a backlight module of a liquid crystal display device, so as to effectively improve the emission from the light source to the The use efficiency of the light of the liquid crystal display panel further improves the brightness of the picture generated on the screen, and displays a uniform high-quality picture on the entire screen. Background technique [0003] As human civilization evolves from an industrial society to a highly informationized society, electronic display devices that can display and convey various information groups are becoming more and more important as a medium. CRT (Cathode Ray Tube), which is currently widely used in electronic display devices, has been greatly restricted in the process of product enlargement due to its large ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1335F21V8/00
CPCG02B6/0038G02B6/0036Y10T428/24612A61B5/7475G06Q50/22
Inventor 金炫辰朴种旼金昌建金智圣郑雨澈
Owner KOLON IND INC