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Title:
CHOLESTERIC LIQUID CRYSTAL OPTICAL BODY AND ITS MANUFACTURING METHOD
Document Type and Number:
Japanese Patent JP2010015170
Kind Code:
A
Abstract:

To provide a reflective polarizer which has reduced absorption for transmission polarization, and uniformly operates over a wide wavelength range.

An optical body is formed using cholesteric liquid crystal materials. At least two different coating compositions containing cholesteric liquid crystal material are coated on a substrate. At least a portion of each coating composition is allowed to interdiffuse so as to generate a change in pitch along a thickness dimension of the optical body. This optical body is used, for example, as a reflective polarizer in an optical display.


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Inventors:
OUDERKIRK ANDREW J
MUNTER JOHN D
KAMMIN MARVIN R
Application Number:
JP2009219235A
Publication Date:
January 21, 2010
Filing Date:
September 24, 2009
Export Citation:
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Assignee:
THREE M INNOVATIVE PROPERTIES
International Classes:
G02B5/30; G02F1/1335
Domestic Patent References:
JP2001056484A2001-02-27
JPH11242117A1999-09-07
JPH11264907A1999-09-28
JPH10206638A1998-08-07
JPH10213709A1998-08-11
JPH11194217A1999-07-21
JP2000193962A2000-07-14
JP2000147250A2000-05-26
JP2002361769A2002-12-18
JPH1144816A1999-02-16
Foreign References:
US2761791A1956-09-04
Attorney, Agent or Firm:
Atsushi Aoki
Takashi Ishida
Tetsuji Koga
Nagasaka Tomoyasu
Yoshihiro Kobayashi
Atsushi Ebiya



 
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