Title:
ORIENTATED FILM HAVING PORES
Document Type and Number:
WIPO Patent Application WO/1998/005984
Kind Code:
A1
Abstract:
An orientated film which has a characteristic that the scattering degree of light is varied with the incident angle of the light and which is useful for the improvement of image quality on a liquid crystal display, particularly, for a view angle improving film by which a view angle can be widened. The orientated film is made of thermoplastic polymer and has a number of fine pores which contribute to the above mentioned scattering characteristic. A film made of thermoplastic polymer is stretched in one direction under the conditions of temperature and draw ratio under which grooves are produced in the surface of the film in a direction perpendicular to the drawing direction.
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Inventors:
UCHIYAMA AKIHIKO (JP)
YATABE TOSHIAKI (JP)
YATABE TOSHIAKI (JP)
Application Number:
PCT/JP1997/002700
Publication Date:
February 12, 1998
Filing Date:
August 04, 1997
Export Citation:
Assignee:
TEIJIN LTD (JP)
UCHIYAMA AKIHIKO (JP)
YATABE TOSHIAKI (JP)
UCHIYAMA AKIHIKO (JP)
YATABE TOSHIAKI (JP)
International Classes:
B29C55/04; B29D7/01; B32B17/10; G02B5/02; G02F1/1335; (IPC1-7): G02B5/02; B32B7/02; B32B17/10; C08J9/00; G02B5/30; G02F1/1335
Foreign References:
| JPH08160206A | 1996-06-21 | |||
| JPH08262208A | 1996-10-11 | |||
| JPH06298957A | 1994-10-25 | |||
| JPH04296819A | 1992-10-21 | |||
| JPH07209637A | 1995-08-11 | |||
| JPS5981625A | 1984-05-11 | |||
| JPH0876112A | 1996-03-22 | |||
| JPH07104127A | 1995-04-21 | |||
| JPH07104272A | 1995-04-21 | |||
| JPH09127501A | 1997-05-16 | |||
| JPH0887009A | 1996-04-02 |
Other References:
See also references of EP 0859246A4
Attorney, Agent or Firm:
Maeda, Sumihiro (Intellectual Property Dept. 1-1, Uchisaiwaicho 2-Chom, Chiyoda-ku Tokyo 100, JP)
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