US 12,067,931 B2
Display device and method for driving the display device
Hyongdo Choi, Anseong-si (KR); Hyangwon Moon, Yongin-si (KR); and Yun-Nam Kim, Suwon-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-Si (KR)
Filed by Samsung Display Co., Ltd., Yongin-Si (KR)
Filed on Mar. 2, 2023, as Appl. No. 18/116,788.
Claims priority of application No. 10-2022-0028134 (KR), filed on Mar. 4, 2022.
Prior Publication US 2023/0282159 A1, Sep. 7, 2023
Int. Cl. G09G 3/32 (2016.01)
CPC G09G 3/32 (2013.01) [G09G 2300/0842 (2013.01); G09G 2310/027 (2013.01); G09G 2320/0233 (2013.01); G09G 2320/0276 (2013.01); G09G 2320/0673 (2013.01); G09G 2330/021 (2013.01); G09G 2330/028 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A display device comprising:
a controller configured to receive an input image signal and a dimming value, to convert the input image signal into image data and the dimming value into a dimming control signal, and to output the dimming control signal;
a reference voltage generator comprising a voltage generation unit generating a first gamma reference voltage and a second gamma reference voltage, and a voltage correction unit receiving the dimming control signal, outputting a correction reference voltage by correcting the second gamma reference voltage based on the dimming control signal and outputting the first gamma reference voltage without correcting the first reference voltage;
a data driver configured to receive the correction reference voltage, to generate gamma voltages based on the correction reference voltage, to convert the image data into data voltages based on the gamma voltages, and to output the data voltages; and
a display panel receiving the data voltages, the display panel including a plurality of pixels.