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:
Dec. 11, 2012
Filed:
Dec. 22, 2009
Seungchan Byun, Incheon, KR;
Jongmoo Kim, Seoul, KR;
Seungchan Byun, Incheon, KR;
Jongmoo Kim, Seoul, KR;
LG Display Co., Ltd., Seoul, KR;
Abstract
An organic light emitting diode display including a display panel having a plurality of data lines, a plurality of gate lines, and a plurality of pixels, a data drive circuit that converts input digital video data into data voltage with reference to gamma reference voltages and supplies the data voltage to the data lines, a gamma reference voltage generation circuit that generates the gamma reference voltages by dividing a high potential gamma power; and a gamma power adjusting circuit that adjusts display luminance by extracting a number of white pixels from the input digital video data and adjusting the output level of the high potential gamma power depending on the number of white pixels.