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:
Jul. 20, 2010
Filed:
Jan. 10, 2006
Hiroaki JO, Suwa, JP;
Hiroaki Jo, Suwa, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A drive circuit of an electro-optical device comprising electro-optical elements of which each gray scale is controlled in accordance with a data signal output to a data line includes a reference current that generates unit generating reference current and a signal output unit that generates the data signal corresponding to a current value of the reference current generated by the reference current generating unit on the basis of gray-scale data and outputs the generated data signal to the data line. The reference current generating unit performs a refresh operation of setting the current value of the reference current to a predetermined value plural times.