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:
Sep. 25, 2007
Filed:
Dec. 19, 2002
Shinichi Ishizuka, Tsurugashima, JP;
Masami Tsuchida, Tsurugashima, JP;
Hideo Ochi, Tsurugashima, JP;
Tsuyoshi Sakamoto, Tsurugashima, JP;
Shinichi Ishizuka, Tsurugashima, JP;
Masami Tsuchida, Tsurugashima, JP;
Hideo Ochi, Tsurugashima, JP;
Tsuyoshi Sakamoto, Tsurugashima, JP;
Pioneer Corporation, Tokyo, JP;
Abstract
A display panel driving device and driving method for providing high quality images without irregular luminance even after long-time use. The value of the light-emission drive current flowing when causing each light-emission elements bearing each pixel to independently emit light in succession is measured, then the luminance is corrected for each input pixel data based on the above light-emission drive current values, associated with the pixels corresponding to the input pixel data. According to another aspect, the voltage value of the drive voltage is adjusted in such a manner that one value among each measured light-emission drive current value becomes equal to a predetermined reference current value. According to a further aspect, the current value is measured while an off-set current component corresponding to a leak current of the display panel is added to the current outputted from the drive voltage generator circuit and the resultant current is supplied to each of the pixel portions.