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. 29, 2009
Filed:
Aug. 18, 2006
Jae-sung Lee, Suwon-si, KR;
Choon-yul OH, Suwon-si, KR;
Jae-Sung Lee, Suwon-si, KR;
Choon-Yul Oh, Suwon-si, KR;
Samsung Mobile Display Co., Ltd., Yongin, KR;
Abstract
An organic light emitting display (OLED) device having an automatic brightness control apparatus that can control the luminance of the OLED device according to the brightness of ambient light. The OLED device includes a light sensor adapted to sense ambient light and produce an output voltage corresponding to the ambient light. The automatic brightness control apparatus is adapted to adjust a gamma value to the output voltage and output a gamma reference voltage. The automatic brightness control apparatus is adapted to sense a change in the ambient light by synchronizing the output voltage of the light sensor with a vertical synchronization (Vsync) signal. Accordingly, the gamma value varies with the brightness of the ambient light so that the luminance of the OLED device is controlled according to the brightness of the ambient light.