Resin sheet, liquid crystal cell substrate, liquid crystal display device, substrate for an electroluminescence display device, electroluminescence display device, and a substrate for a solar cell

a technology of liquid crystal cells and substrates, applied in the direction of synthetic resin layered products, identification means, instruments, etc., can solve the problems of plastic substrates posing a problem of misalignment and relatively low mechanical strength, so as to suppress thermal shrinkage and expansion, improve impact resistance, and prevent misalignment of electrodes

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a technology of liquid crystal cells and substrates, applied in the direction of synthetic resin layered products, identification means, instruments, etc., can solve the problems of plastic substrates posing a problem of misalignment and relatively low mechanical strength, so as to suppress thermal shrinkage and expansion, improve impact resistance, and prevent misalignment of electrodes

US20070042168A1Inactive Publication Date: 2007-02-22NITTO DENKO CORP

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Examples

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example 1

[0082] An epoxy resin liquid was prepared by stirring and mixing: 35.9 parts by weight (hereinafter referred only to parts) of 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexane carboxylate represented by the following formula (3) and 10.1 parts of a dicyclopentadiene type epoxy resin (“EXA-7230”, trade name (epoxy equivalent of 259); manufactured by Dainippon Ink And Chemicals, Incorporated) represented by the following formula (4); as a curing agent, 52.9 parts of methylnadic anhydride; and as a curing accelerator, 1.1 parts of tetra-n-butylphosphonium o,o-diethylphosphorodithioate represented by the following formula (5).

[0083] Then, the aforesaid epoxy resin liquid was impregnated into a glass fiber cloth-like material (“NEA2116F S136”, trade name; manufactured by Nitto Boseki Co., Ltd., a refractive index of 1.513, a thickness of 90 μm), and left to stand for 60 minutes under a condition of a reduced pressure (200 Pa).

[0084] Then, a hard-coat layer having a thickness of 2 μm was...

example 2

[0087] A resin sheet was prepared in the same manner as in Example 1 except that, of the resins for forming an overcoat layer, the other oxetane resin (“ARON OXETANE OXT-121”, trade name; manufactured by Toagosei Co., Ltd.) was used as an oxetane resin.

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PUM

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Abstract

There is provided a resin sheet that achieves improvement in lightweight, low-profile and high impact characteristics, suppresses thermal shrinkage and expansion and is excellent in light transparency so as to prevent the display quality or the like of a display device from being deteriorated, as well as a substrate for a display device, a display device and a substrate for a solar cell, each having the aforesaid resin sheet. A resin sheet includes a cured resin layer containing a glass fiber cloth-like material and an overcoat layer laminated on the cured resin layer to have a surface roughness Rt of 200 nm or less, and is structured to have a haze value of 10% or lower.

Description

FIELD OF THE INVENTION [0001] The present invention relates mainly to a resin sheet suitable for use in a display device, as well as a substrate for a display device, a display device and a substrate for a solar cell, each including the resin sheet. BACKGROUND OF THE INVENTION [0002] For liquid crystal display devices, electroluminescence display devices and the like, it is proposed to use plastic substrates in place of conventional glass substrates for progress in making displays lightweight, low-profile and high impact. Whilst substrates of the above type are required to have a low coefficient of thermal expansion, plastic substrates may pose a problem of causing misalignment when forming, for example, electrodes or color filters, due to thermal shrinkage and expansion, since plastic has a higher coefficient of linear expansion than glass. [0003] Although those of various active matrix driving types are recently used especially in the field of liquid crystal display devices thanks...

Claims

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Application Information

Patent Timeline

22 Feb 2007

Publication

US20070042168A1

IPC: D04H13/00; B32B5/28; B32B27/04; B32B27/12; G02F1/1333; G09F9/30; G09F9/35; H01L27/32; H01L31/0392; H01L51/50; H05B33/02; H05B33/14

CPC: B32B27/12; G02F1/133305; Y10T428/249924; Y10T428/1086; B32B2307/538; B32B2038/0076; B32B2457/202; B32B2305/72

Inventors: HARADA, TADAAKI; AKADA, YUUZOU