Title:
LAYERED POLARIZATION FILM, PHASE DIFFERENCE FILM, AND LIQUID CRYSTAL DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2007/100117
Kind Code:
A1
Abstract:
Provided is a liquid crystal device and in particular, a layered polarization film
capable of increasing an angle-of-view of the IPS mode and roll-to-roll bonding
a phase difference film and a polarization film. More specifically, the layered
polarization film includes: a negative substantially one-axis optical film
formed by a thermoplastic polymer having negative molecular polarization ratio
anisotropy, a positive optical film formed by a thermoplastic polymer having
positive molecular polarization ratio anisotropy, and a polarization film
which are layered in this order. A delay axis of the negative substantially one-axis
optical film is substantially parallel to a delay axis of the positive optical
film, and both axes substantially orthogonally intersect an absorption axis
of the polarization film. The main orientation direction of the polymer backbone
of the negative substantially one-axis optical film is positioned substantially
parallel to the absorption axis of the polarization film. The main orientation
direction of the polymer backbone of the positive optical film is positioned
substantially vertical to the polarization film.
Inventors:
UCHIYAMA AKIHIKO (JP)
ONO YUHEI (JP)
MATSUO JYUHO (JP)
ONO YUHEI (JP)
MATSUO JYUHO (JP)
Application Number:
PCT/JP2007/054116
Publication Date:
September 07, 2007
Filing Date:
February 26, 2007
Export Citation:
Assignee:
TEIJIN LTD (JP)
UCHIYAMA AKIHIKO (JP)
ONO YUHEI (JP)
MATSUO JYUHO (JP)
UCHIYAMA AKIHIKO (JP)
ONO YUHEI (JP)
MATSUO JYUHO (JP)
International Classes:
G02B5/30; G02F1/1335; G02F1/13363
Domestic Patent References:
| WO2006030797A1 | 2006-03-23 |
Foreign References:
| JP2005173584A | 2005-06-30 | |||
| JP2002221622A | 2002-08-09 | |||
| JP2001194668A | 2001-07-19 | |||
| JP2612196B2 | 1997-05-21 | |||
| JP2994013B2 | 1999-12-27 | |||
| JP2818983B2 | 1998-10-30 | |||
| JP3168850B2 | 2001-05-21 | |||
| JP2809712B2 | 1998-10-15 |
Other References:
YUKITA SAITOH ET AL., JAPANESE JOURNAL OF APPLIED PHYSICS, vol. 37, 1998, pages 4822 - 4828
J. CHEN ET AL., SOCIETY FOR INFORMATION DISPLAY '98 DIGEST, 1998, pages 315
MACROMOL. RAPID COMMMUN., vol. 20, 1999, pages 279
See also references of EP 1998196A4
J. CHEN ET AL., SOCIETY FOR INFORMATION DISPLAY '98 DIGEST, 1998, pages 315
MACROMOL. RAPID COMMMUN., vol. 20, 1999, pages 279
See also references of EP 1998196A4
Attorney, Agent or Firm:
MIHARA, Hideko (Property Center Limited 1-1, Uchisaiwaicho 2-chome, Chiyoda-k, Tokyo 11, JP)
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