Title:
OPTICAL LAMINATE FOR FRONT SURFACE OF IN-CELL TOUCH PANEL LIQUID CRYSTAL ELEMENT AND IN-CELL TOUCH PANEL LIQUID CRYSTAL DISPLAY DEVICE USING SAME
Document Type and Number:
WIPO Patent Application WO/2014/069377
Kind Code:
A1
Abstract:
Provided is an optical laminate for the front surface of an in-cell touch panel liquid crystal element that makes it possible to achieve a thin shape while maintaining essential function and that is capable of preventing clouding in a liquid crystal screen. The optical laminate comprises a phase difference plate, a polarizing film, and a transparent substrate in this order and additionally comprises a conductive layer. The transparent substrate has optical anisotropy that disrupts linear polarized light emitted from the polarizing film. The phase difference plate, the polarizing film, and the transparent substrate are laminated either with no other layers therebetween or with only the conductive layer therebetween, and the thickness of the optical laminate is 32-300 µm.
Inventors:
TSUNEKAWA MASAYUKI (JP)
Application Number:
PCT/JP2013/079038
Publication Date:
May 08, 2014
Filing Date:
October 25, 2013
Export Citation:
Assignee:
DAINIPPON PRINTING CO LTD (JP)
International Classes:
G02B5/30; B32B7/023; G02F1/1333; G02F1/13363; G06F3/041; G06F3/042
Foreign References:
| JP2011133881A | 2011-07-07 | |||
| JP2004227010A | 2004-08-12 |
Attorney, Agent or Firm:
OHTANI, Tamotsu et al. (JP)
Tamotsu Otani (JP)
Tamotsu Otani (JP)
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