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Patent Searching and Data


Title:
LIQUID CRYSTAL DISPLAY AND MANUFACTURING METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2012/093629
Kind Code:
A1
Abstract:
Disclosed is a photoaligned, horizontal alignment type liquid crystal display wherein decreases in the voltage holding ratio (VHR) have been suppressed; also disclosed is a manufacturing method of said liquid crystal display. The disclosed liquid crystal display is provided with a liquid crystal layer containing liquid crystal molecules with a pre-tilt angle of 5° or less, a first and a second substrate sandwiching the liquid crystal layer, a first oriented film arranged between the first substrate and the liquid crystal layer, and a second oriented film arranged between the second substrate and the liquid crystal layer. The first and the second substrates have a pair of electrodes arranged so as to generate an electric field in the liquid crystal layer, and at least one of the first and second orientation films is formed from an oriented film material capable of controlling the pre-tilt angle of the liquid crystal molecules to 5° or lower by means of a photoreaction mechanism other than photolysis. The oriented film material contains a polyimide with an imidization rate of 80% or greater, and the polyimide has side chains containing a functional group that absorbs ultraviolet light. The number of side chains is one for every one unit of the repeating structure of the polyimide.

Inventors:
MIZUSAKI MASANOBU
NAKANISHI YOUHEI
Application Number:
PCT/JP2011/080356
Publication Date:
July 12, 2012
Filing Date:
December 28, 2011
Export Citation:
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Assignee:
SHARP KK (JP)
MIZUSAKI MASANOBU
NAKANISHI YOUHEI
International Classes:
G02F1/1337; C08G73/10; C08J7/00
Domestic Patent References:
WO1996037807A11996-11-28
WO2010116551A12010-10-14
Foreign References:
JP2009520702A2009-05-28
JP2009037104A2009-02-19
JPH10206856A1998-08-07
JPH05341293A1993-12-24
Attorney, Agent or Firm:
YASUTOMI & Associates (JP)
Patent business corporation Yasutomi international patent firm (JP)
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Claims: