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:
Nov. 24, 2009
Filed:
Dec. 01, 2004
Hiroaki JO, Suwa, JP;
Toshiyuki Kasai, Okaya, JP;
Hiroshi Horiuchi, Matsumoto, JP;
Takeshi Nozawa, Suwa, JP;
Hiroaki Jo, Suwa, JP;
Toshiyuki Kasai, Okaya, JP;
Hiroshi Horiuchi, Matsumoto, JP;
Takeshi Nozawa, Suwa, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
To correct brightness by measuring with accuracy and high speed variation of the brightness between pixels of an organic EL display. A first correction data memory stores a first correction data Dhy in a row direction, and a second correction data memory stores second correction data Dhx in a column direction. A first operation circuit generates a pixel correction data DH based on the first correction data Dhy and the second correction data Dhx. The pixel correction data DH is stored into a pixel correction data memory. Input gray scale data Din is corrected by the pixel correction data DH to output as output gray scale data Dout.