US 9,812,088 B2
Display device including gray scale corrector and driving method thereof
Ik Hyun Ahn, Yongin (KR); Yoon Gu Kim, Yongin (KR); Bong Im Park, Yongin (KR); Seon Ki Kim, Yongin (KR); and Ah Young Son, Yongin (KR)
Assigned to Samsung Display Co., Ltd., Yongin, Gyeonggi-do (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin, Gyeonggi-Do (KR)
Filed on Dec. 11, 2013, as Appl. No. 14/103,035.
Claims priority of application No. 10-2013-0092058 (KR), filed on Aug. 2, 2013.
Prior Publication US 2015/0035866 A1, Feb. 5, 2015
Int. Cl. G09G 5/10 (2006.01); G09G 3/36 (2006.01)
CPC G09G 5/10 (2013.01) [G09G 3/3648 (2013.01); G09G 2300/0426 (2013.01); G09G 2310/0205 (2013.01); G09G 2310/0251 (2013.01); G09G 2320/0233 (2013.01); G09G 2320/0238 (2013.01); G09G 2320/0252 (2013.01); G09G 2320/0271 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A display device, comprising:
a display panel including a plurality of pixels;
a signal controller to process input image signals to generate output image signals; and
a data driver to convert the output image signals into data voltages to be applied to the display panel, wherein the signal controller includes:
a corrector to perform gray scale correction when gray scale values of input image signals for one dot are not all 0, the corrector to correct the gray scale values of the input image signals to a gray scale value greater than 0 gray scale value when the gray scale values of the input image signals for the pixels of the one dot are 0, and the output image signals based on the corrected gray scale values of the input image signals, and
a correction avoidance determiner to output the input image signals for the pixels of the one dot as output image signals without being corrected by the corrector when the gray scale values of the input image signals for the pixels of the one dot are all 0, wherein the pixels for the one dot are to output different colors of light, and wherein the correction avoidance determiner is to:
receive the corrected gray scale values of the input image signals and the input image signals, and
output the input image signals for the one dot as the output image signals when the gray scale values of the input image signals for the pixels of the one dot are all 0.