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:
Sep. 06, 1983
Filed:
May. 21, 1981
Toshio Tatsumichi, Ando, JP;
Hiroshi Kawarada, Hirakata, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A method is provided for the preparation of an electrode substrate for use in a liquid display device utilizing perpendicular alignment of liquid crystal and dichroic dye molecules. In the improved method, a base substrate bearing an electrode film is coated with an insulating film on the surface which contacts the liquid crystal. The insulating film is rubbed with cloth in a fixed direction and following the rubbing treatment, the rubbed surface is treated with a silane surfactant so that when the electrode substrate is employed in a liquid crystal display device, the liquid crystal and dye molecules are arranged in the direction of the major axes thereof in substantially perpendicular orientation at constant tilt angles in the same direction on the interface with said electrode substrate.