The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 15, 1998
Filed:
Feb. 19, 1997
Applicant:
Inventors:
Assignees:
Sharp Kabushiki Kaisha, Osaka, JP;
DERA, Hants, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F / ; G02F / ;
U.S. Cl.
CPC ...
349126 ; 349134 ;
Abstract
An electrode substrate is placed on a stage heated at temperature in a range of from 50.degree. to 200.degree. C. in such a manner that an alignment film of the electrode substrate faces upwards. Thereafter, a rubbing treatment is applied by a roller having the rubbing cloth wound therearound by moving a stage while rubbing the surface of the alignment film by rotating the roller in a state where the electrode substrate is sufficiently heated. Here, as the alignment film is softened by the described heat treatment, the rubbing process is facilitated. This permits a uniform C2 orientation without defects to be achieved in smectic liquid crystals.