Title:
PRODUCTION OF LIQUID CRYSTAL ELEMENT
Document Type and Number:
Japanese Patent JPH04204915
Kind Code:
A
Abstract:
PURPOSE:To obtain a pretilt angle of liquid crystal with good reproducibility and little changes with time by rubbing method by allowing a resin film to react with a liquid having small surface tension after rubbing so as to decrease the surface free energy of the polymer which constitutes the resin film. CONSTITUTION:A resin for polyamic acid-base oriented film is applied with a spinner to cover transparent electrodes 3, 4 which are finely worked on the main surfaces of the substrates 1, 2, and heated to obtain a resin film. Then this resin film is rubbed, and dipped in or exposed to such a liquid having small surface tension such as octane, nonane, decane, alkylbenzene, etc., and then dried to form oriented films 5, 6. Then the main surfaces of substrates 1, 2 are stuck to face to each other at a specified distance and sealed, into which a liquid crystal compsn. is injected to form a liquid crystal element. Thereby, a pretilt angle of the required liquid crystal can be stably supplied and the obtd. element has good display qualities.
Inventors:
YAMAZOE HIROSHI
Application Number:
JP34046790A
Publication Date:
July 27, 1992
Filing Date:
November 30, 1990
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
G02F1/13; G02F1/1337; (IPC1-7): G02F1/13; G02F1/1337
Attorney, Agent or Firm:
Yoshihiro Morimoto