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. 04, 2008
Filed:
Mar. 22, 2005
Jun Maede, Kyoto, JP;
Shinichi Abe, Kyoto, JP;
Akio Fujikawa, Kyoto, JP;
Masanori Fujisawa, Kyoto, JP;
Jun Maede, Kyoto, JP;
Shinichi Abe, Kyoto, JP;
Akio Fujikawa, Kyoto, JP;
Masanori Fujisawa, Kyoto, JP;
Rohm Co., Ltd., Kyoto, JP;
Abstract
The output current from respective output terminals of a drive circuit (driver IC) of an organic EL display panel to respective column pins or data lines is sequentially selected by sequentially scanning a plurality of switch circuits by a switch scan circuit. The resultant output currents are converted into voltage values by resistors selected by a selector. Further, the converted voltage values sequentially generated according to the scanning of the switch scan circuit are outputted externally of the IC.