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. 10, 1990
Filed:
Oct. 11, 1988
Applicant:
Inventors:
Tadashi Ohta, Suwa, JP;
Jun Sugiyama, Suwa, JP;
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F / ; G09G / ;
U.S. Cl.
CPC ...
350333 ; 350332 ; 340784 ;
Abstract
A method of driving an electro-optical device having a plurality of scan lines, data lines and pixels in which data written into and stored within the plurality of pixels is erased from the pixels sequentially rather than at the same time. A plurality of pulses supplied on the scan and data lines during the erasing period produces an erasing period for each scan line which is substantially the same. The effective voltage value of signal waveforms during the erasing period is less than the absolute magnitude of a holding signal waveform which maintains the data in the pixels until the erasing period begins.