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. 07, 1999
Filed:
Feb. 27, 1997
Applicant:
Inventors:
York Liao, Kowloon, HK;
Hoi Sing Kwok, Kowloon, HK;
Assignee:
Varintelligent (BVI) Limited, Tortola, VG;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G / ;
U.S. Cl.
CPC ...
345 87 ; 345 92 ;
Abstract
The invention relates to an active matrix liquid crystal display device based on voltage control (non-zero driving voltage) of the birefringence (negative or positive) of the liquid crystal cell. In the device a ground (earth) plate comprises a piece of glass with a transparent conductive coating, such as indium tin oxide. A silicon wafer with integrated circuits on it has a coating of polymer for aligning liquid crystal molecules. The coated glass also has a coating for aligning the liquid crystal molecules.