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Phase retardation film and liquid crystal display device including the same

一种相位延迟膜、液晶显示器的技术，应用在仪器、光学、非线性光学等方向，能够解决单层相位延迟膜没有再使用性等问题，达到优越视角性能和耐久性、良好耐久性、改善视角性质的效果

Inactive Publication Date: 2005-12-28
SUMITOMO CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, single-layer phase retardation films made from styrene-based polymers are not sufficiently reusable.

Method used

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  • Phase retardation film and liquid crystal display device including the same
  • Phase retardation film and liquid crystal display device including the same

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0047] Polarizing plate / adhesive / phase retardation film / adhesive / liquid crystal element / adhesive / polarizing plate;

example 2

[0049] polarizing plate / adhesive / liquid crystal element / adhesive / phase retardation film / adhesive / polarizing plate; and

example 3

[0051] Polarizing plate / adhesive / phase retardation film / adhesive / liquid crystal element / adhesive / phase retardation film / adhesive / polarizing plate.

[0052] As an adhesive for bonding the phase retardation film and a polarizing plate (hereinafter referred to as "first adhesive"), an adhesive for bonding the phase retardation film to a liquid crystal element base material (hereinafter referred to as "first adhesive"), second adhesive") and adhesives for bonding liquid crystal elements to polarizing plates, adhesives including acrylic resins, epoxy resins, polyurethane resins, silicone resins, butyral resins, etc., because they have Transparency and satisfactory use. From the viewpoint of durability of a liquid crystal display in which the phase retardation film of the present invention has an outer layer formed of a non-styrene polymer material, each of the first and second adhesives is preferably an adhesive containing a single copolymer, the copolymer The product has a glass ...

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PUM

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Abstract

Disclosed is a phase retardation film comprising two outer layers facing each other and an inner layer interposed between the two outer layers, each of the outer layers being formed of a non-styrene polymer material, and the inner layer being formed of a tape A polymer material having a negative characteristic birefringence is formed, wherein the phase retardation film has a negative characteristic birefringence and a haze of 0-1%. A liquid crystal display including the phase retardation film is also disclosed.

Description

technical field [0001] The present invention relates to a phase retardation film and a liquid crystal display containing the phase retardation film. Background technique [0002] In recent years, liquid crystal displays (LCDs) have been used as information displays such as portable phones, personal digital assistants (PDAs), The use of personal computers and television monitors has rapidly increased day by day. With the development of LCD technology, various modes of LCDs have been proposed. These proposals are intended to address LCD issues with respect to response rate, contrast and viewing angle. However, these LCDs still suffer from narrow viewing angles compared to cathode ray tubes (CRTs), in other words, LCDs have greater viewing angle dependence. Therefore, various schemes for viewing angle compensation have been proposed. [0003] As one of the measures for viewing angle compensation, liquid crystal elements capable of substantially magnifying the viewing angle ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B1/08G02B5/30G02F1/1335G02F1/13363
CPCG02B5/3083G02F1/133634G02F1/13363
Inventor 日野享子铃木俊彦高畑弘明黑田龙磨
Owner SUMITOMO CHEM CO LTD