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:
Apr. 05, 1994
Filed:
Jun. 10, 1992
Applicant:
Inventors:
Takaaki Iemoto, Takaichi, JP;
Koji Kumada, Tenri, JP;
Takashi Ohnishi, Tenri, JP;
Hideki Yakushigawa, Ikoma, JP;
Assignee:
Sharp Kabushiki Kaisha, Osaka, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G09G / ;
U.S. Cl.
CPC ...
345 92 ; 359 57 ;
Abstract
A drive circuit for a display apparatus having a display section including a pixel, a switching element connected to the pixel and a scanning electrode connected to the switching element, and a pixel electrode and a counter electrode being provided on opposite sides of the pixel, includes a circuit for applying a first oscillating voltage to the counter electrode, and for applying a second oscillating voltage having the same phase and the same amplitude as the first oscillating voltage to the scanning electrode during a period when the switching element is to be in off-state.