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:
Mar. 09, 2021
Filed:
Oct. 16, 2018
Applicant:
Samsung Display Co., Ltd., Yongin-si, KR;
Inventor:
Hansin Lim, Hwaseong-si, KR;
Assignee:
Samsung Display Co., Ltd., Yongin-si, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G 3/3233 (2016.01); H01L 51/50 (2006.01);
U.S. Cl.
CPC ...
G09G 3/3233 (2013.01); H01L 51/50 (2013.01); G09G 2320/0242 (2013.01); G09G 2320/0276 (2013.01); G09G 2320/0666 (2013.01); G09G 2320/0693 (2013.01); G09G 2330/028 (2013.01); G09G 2360/145 (2013.01);
Abstract
An organic light emitting display device includes a display panel, a gamma reference voltage generator, and a gamma voltage generator. The gamma reference voltage generator provides the data voltage having a predetermined voltage level to the display panel, changes brightness of the display panel by sequentially reducing the data voltage, determines a critical voltage by comparing a changing amount of the brightness to a predetermined reference changing amount of the brightness, and determines the gamma reference voltage based on the critical.