Title:
LIQUID CRYSTAL ALIGNMENT LAYER FORMING METHOD
Document Type and Number:
WIPO Patent Application WO/2004/072720
Kind Code:
A1
Abstract:
A liquid crystal alignment layer forming method comprises a step of coating a substrate with a liquid crystal aligning agent containing soluble polyimide and polyamic acid and a step of irradiating the substrate with polarized ultraviolet radiation. According to the invention, a liquid crystal alignment layer can be formed with excellent workability and with excellent uniformness and used for a liquid crystal display device with little stored charge. Therefore a liquid crystal display device having this liquid crystal alignment layer can continue to display an image of high contrast without causing image persistence because of the little charge storage. The invention is a high versatility technique leading to improvement of electrical characteristics, and further leading to improvement of the quality of image of any type of liquid crystal device including display devices such as of not only the TFT liquid crystal currently used in the mainstream, but also the VA liquid crystal and the IPS liquid crystal.
More Like This:
Inventors:
TAKI HIROTSUGU (JP)
IMAMURA TETSUYA (JP)
IMAMURA TETSUYA (JP)
Application Number:
PCT/JP2004/001388
Publication Date:
August 26, 2004
Filing Date:
February 10, 2004
Export Citation:
Assignee:
NISSAN CHEMICAL IND LTD (JP)
TAKI HIROTSUGU (JP)
IMAMURA TETSUYA (JP)
TAKI HIROTSUGU (JP)
IMAMURA TETSUYA (JP)
International Classes:
G02F1/1337; (IPC1-7): G02F1/1337
Foreign References:
| JP2000204250A | 2000-07-25 | |||
| JPH09297313A | 1997-11-18 | |||
| JPH08220541A | 1996-08-30 |
Attorney, Agent or Firm:
Senmyo, Kenji (38 Kanda-Higashimatsushitach, Chiyoda-ku Tokyo, JP)
Download PDF: