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:
Jul. 27, 1993
Filed:
Aug. 18, 1992
Nobuyuki Itoh, Tenri, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
The invention presents a liquid crystal display device characterized by forming pixel elements of transparent electrodes on the confronting surface of a pair of light-transmissive substrates, forming insulating films followed by orientation films on the light-transmissive substrates, and filling the gap of the light-transmissive substrates with liquid crystal. At least on one of the light-transmissive substrates, insulation films of different materials contact the orientation film in the pixel portions and non-pixel portions, or the insulation film is formed only in the pixel portions. According to the invention, therefore, the asymmetricity of liquid crystal molecular orientation is weak in the pixel portions, and a bistable memory effect may be obtained. Further, in the non-pixel portions the orientation asymmetricity is intensified, so that a uniform clarity may be obtained.