Title:
液晶表示装置
Document Type and Number:
Japanese Patent JP4774415
Kind Code:
B2
Abstract:
The purpose of the present invention provides a transparent film which almost has no optical anisotropy, almost no difference of the physical characteristics between the machine direction and the direction being perpendicular to the transparent film, with small change of the optical anisotropy or the aspect dimension cause of the changes of temperature and humidity. A excellent liquid crystal display device is also provided thereby which neither optical leakage nor the tone change etc. would not be carried out, even if the environmental change of the temperature and humidity occurred. The solution of the present application is a transparent film which the elastic modulus of elongation in the machine direction is 2.4×109 to 4.9×109 N/m2 the elastic modulus of elongation in the direction being perpendicular to the machine direction is 2.3×109 to 4.7×109 N/m2 ; and the ratio of the elastic modulus of elongation in the machine direction / the elastic modulus of elongation in the direction being perpendicular to the machine direction is 0.80 to 1.36; the retardation value Re in plane of the film is less than 20; and the absolute value of the retardation value Rth in the thickness direction of the film is less than 25. Further, the present invention also relates to a optical compensation film by using the transparent film mentioned above, a polarizing plate, and a liquid crystal display device.
Inventors:
Gen Nakayama
Yosuke Nishiura
Itochu
Yosuke Nishiura
Itochu
Application Number:
JP2008076733A
Publication Date:
September 14, 2011
Filing Date:
March 24, 2008
Export Citation:
Assignee:
FUJIFILM Corporation
International Classes:
G02B5/30; C08J5/18; G02F1/1335; G02F1/13363
Domestic Patent References:
| JP2002207211A | ||||
| JP2002328233A | ||||
| JP2004004641A | ||||
| JP2001247717A | ||||
| JP4145311B2 |
Attorney, Agent or Firm:
Takeshi Takamatsu
Kiyozumi Yazawa
Kiyozumi Yazawa