Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
FILM, PROTECTIVE FILM FOR POLARIZER AND POLARIZING PLATE
Document Type and Number:
Japanese Patent JP2002328232
Kind Code:
A
Abstract:

To obtain an optical film in which a phase difference is hardly caused but the development of the phase difference and its wavelength dependence can be controlled by changing the composition ratio.

The film has ≤3 nm phase difference for the light at 515 nm wavelength and ≤5 nm phase difference in the thickness direction for the light at 515 nm wavelength. The value (A) defined by A=Re(442)-Re(780), wherein Re(442) is the phase difference for the light at 442 nm wavelength and Re(780) is the phase difference for the light at 780 nm wavelength, ranges from -3 nm to 3 nm.


Inventors:
HIKITA TOSHIHIKO
Application Number:
JP2001134928A
Publication Date:
November 15, 2002
Filing Date:
May 02, 2001
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
KANEGAFUCHI CHEMICAL IND
International Classes:
G02B5/30; C08F210/00; C08F222/40; C08J5/18; C08L23/02; C08L35/02; (IPC1-7): G02B5/30; C08F210/00; C08F222/40; C08J5/18; C08L23/02; C08L35/02
Domestic Patent References:
JP2000080240A2000-03-21
JPH0659122A1994-03-04