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:
Oct. 03, 1989
Filed:
Jul. 19, 1988
Applicant:
Inventor:
Munehiro Shinabe, Tokorozawa, JP;
Assignee:
Citizen Watch Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358241 ; 358236 ; 340784 ;
Abstract
First and second driving pulses, which are different in shape, are alternately applied to each pixel of a liquid crystal matrix display panel. Each driving pulse comprises a high voltage portion and a low voltage portion. By changing the width of the high voltage portion, a half tone is obtained in a picture. The high voltage portion of the first driving pulse is formed along a leading edge of the pulse, and the high voltage portion of the second driving pulse is formed along a trailing edge of the pulse to offset capacitance noise caused by capacitive connections between data and scanning electrodes of the display panel.