专利名称：Optical film, polarizing plate and liquid
crystal display device
发明人：Ikuko Ohgaru,Susumu Sugiyama,Yoichi
Maruyama
申请号：US11727607申请日：20070327
公开号：US20070231506A1公开日：20071004
专利附图：
摘要：An optical film, which has a photoelastic coefficient in a longitudinal directionand a photoelastic coefficient in a direction approximately orthogonal to the longitudinal
direction, wherein a value obtained by dividing smaller one of the two photoelasticcoefficients by greater one is 0.8 or below; an optical film, which has a value of 1.2 orabove obtained by dividing greater one of a velocity of sound in a longitudinal directionand a velocity of sound in a direction approximately orthogonal to the longitudinaldirection by smaller one; and an optical film, which has a coefficient of linear thermalexpansion in a longitudinal direction and a coefficient of linear thermal expansion in awidth direction approximately orthogonal to the longitudinal direction, wherein a valueobtained by dividing smaller one of the two coefficients of linear thermal expansion bygreater one is from 0.1 to 0.5.
申请人：Ikuko Ohgaru,Susumu Sugiyama,Yoichi Maruyama
地址：Minami-ashigara-shi JP,Minami-ashigara-shi JP,Minami-ashigara-shi JP
国籍：JP,JP,JP
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