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. 13, 1994
Filed:
Apr. 28, 1993
Applicant:
Inventors:
Assignee:
Matsushita Electric Industrial Co. Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F / ;
U.S. Cl.
CPC ...
359 59 ; 359 54 ; 359 58 ;
Abstract
Pixel electrodes in the periphery of a thin film transistor array (peripheral part of the display screen) of an active matrix type liquid crystal display device are directly electrically shortcircuited with signal lines, whereby an alternating current signal is always applied to the pixel electrodes without being passed through a thin film transistor as a switching element. Thereby the liquid crystal arranged on the peripheral part of the display screen is driven in a static state resulting in a high stability against the display characteristics.