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Optical slice and backlight unit using it

An optical sheet, backlight unit technology, applied in optical components, optics, nonlinear optics, etc., to achieve the effect of easy installation, ensuring anti-adhesion function, and preventing damage

Active Publication Date: 2013-08-14
KEIWA INCORPORATED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, even in the optical sheet provided with the above-mentioned damage prevention layer, due to the presence of tiny beads for preventing adhesion, damage to other optical sheets cannot be sufficiently prevented. Damage to flakes, etc.
In addition, in the case where the anti-blocking curable resin composition is used to form irregularities on the surface, if the surface irregularities are too small, the adhesion prevention performance will be insufficient. In addition, if the above-mentioned anti-blocking curable resin composition is used to improve the brightness of the optical sheet. When the coating film of the curable resin composition that sticks to the block is thinner, the unevenness formed becomes finer, and the anti-adhesion performance becomes more insufficient

Method used

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  • Optical slice and backlight unit using it
  • Optical slice and backlight unit using it
  • Optical slice and backlight unit using it

Examples

Experimental program
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Effect test

Embodiment

[0089] The present invention will be described in detail below based on the examples, but the present invention should not be limitedly interpreted based on the description of the examples.

Synthetic example 1

[0090] (Synthesis Example 1 [Synthesis of Unsaturated Double Bond-Containing Acrylic Copolymer (A-1)])

[0091] 100 parts by mass of propylene glycol monomethyl ether was placed in a 2 L reaction container equipped with a stirrer, a thermometer, a nitrogen introduction tube, a cooler, and a dropping funnel, and nitrogen substitution was performed, followed by heating to 110°C. Next, a mixture consisting of 50 parts by mass of isobornyl methacrylate, 1 part by mass of methyl methacrylate, and 3 parts by mass of methacrylic acid, and tert-butyl peroxide as a polymerization initiator were dropped at the same time for three hours. A mixture consisting of 0.5 parts by mass of 2-ethylhexanoate and 20 parts by mass of propylene glycol monomethyl ether. After completion of the dropping, the reaction was carried out at 110° C. for 1 hour. Then, a mixture consisting of 0.1 parts by mass of t-butyl peroxy-2-ethylhexanoate and 5 parts by mass of propylene glycol monomethyl ether was dr...

Synthetic example 2

[0093] (Synthesis Example 2 [Synthesis of Acrylic Copolymer (A-2)])

[0094] 100 parts by mass of propylene glycol monomethyl ether was placed in a 2 L reaction vessel equipped with a stirrer, a thermometer, a nitrogen introduction tube, a cooler, and a dropping funnel, and after nitrogen substitution, the mixture was heated to 110°C. Next, a mixture consisting of 50 parts by mass of isobornyl methacrylate, 1 part by mass of methyl methacrylate, and 3 parts by mass of methacrylic acid, and tert-butyl peroxide as a polymerization initiator were dropped at the same time for three hours. A mixture consisting of 3 parts by mass of 2-ethylhexanoate and 20 parts by mass of propylene glycol monomethyl ether. It reacted at 110 degreeC for 30 minutes after completion|finish of dripping. Thus, an acrylic copolymer (A-2) was obtained. The number average molecular weight of the acrylic copolymer (A-2) was 3000, the weight average molecular weight was 5500, the SP value was 10.1, and T...

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Abstract

The invention provides an optical slice and a backlight unit using the optical slice, wherein the optical slice can prevent adhesion with other optical slices laminated at the back side of the slice, and can also prevent damages to surfaces of other optical slices and the like. The optical slice of the invention comprises a transparent matrix material layer, an optical layer laminated on one sideof one surface of the matrix material layer, and an adhesion-preventing layer laminated on one side of the other surface of the matrix material layer, wherein the whole surface of the adhesion-preventing layer has a micro concave-convex shape and the adhesion-preventing layer is composed of various phase-separation resins and has a double-island structure which has a regional phase dispersed in amatrix phase and a granular phase dispersed in the regional phase. The main material in the matrix of the adhesion-preventing layer is urethane (methyl) acrylate resin; the main material of the regional phase is (methyl) acrylate resin; and the main material of the granular phase is (methyl) acrylate resin.

Description

Technical field [0001] The invention involves a optical thin piece and a backlight unit using the optical thin sheet, which has a good optical sheet to prevent adhesion and prevent damage function. Background technique [0002] LCD display device is widely used in screen display devices such as television and personal computers. It is mainly divided into a projection of direct viewing display screens and viewing of images mapped on the screen.The intuitive LCD display device includes the transmission type of the light of the transmitted backlight, the reflection type of reflected light using natural light and indoor light without a backlight, and in a bright place for the reflex type and in the dark place for the transmitted semi -semi -semi -transmitted type to the transmitted semi -semi -semi -transmitted type.Transmitted type.On the other hand, the projection LCD display device includes the front shape of the front screen that maps the image to the front screen and the rear t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/02G02B1/10G02F1/13357B32B27/14B32B3/30C08L75/14C08L33/00
Inventor 野中忠幸原田贤一
Owner KEIWA INCORPORATED
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