US 11,915,639 B2
Display device and method for driving the same
Taehoon Kim, Yongin-si (KR); Seon Young Choi, Yongin-si (KR); Sangan Kwon, Yongin-si (KR); Soon-Dong Kim, Yongin-si (KR); Jin-Wook Yang, Yongin-si (KR); and Changnoh Yoon, Yongin-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Gyeonggi-do (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Feb. 12, 2023, as Appl. No. 18/108,626.
Claims priority of application No. 10-2022-0080395 (KR), filed on Jun. 30, 2022.
Prior Publication US 2024/0005846 A1, Jan. 4, 2024
Int. Cl. G09G 3/32 (2016.01)
CPC G09G 3/32 (2013.01) [G09G 2310/0267 (2013.01); G09G 2330/021 (2013.01); G09G 2380/02 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A display device comprising:
a display panel including a plurality of pixels;
a driving controller, which receives an input image signal and a control signal, and outputs a voltage control signal;
a voltage generator, which generate a first voltage and a second voltage in response to the voltage control signal; and
a scan driving circuit, which receives the first voltage and the second voltage and provides a plurality of scan signals to the plurality of pixels,
wherein the display panel is divided into a first display region, which is driven at a first operating frequency, and a second display region, which is driven at a second operating frequency,
wherein the second display region includes a boundary region adjacent to the first display region and a non-boundary region opposite to the first display region with respect to the boundary region, and
wherein the driving controller outputs the voltage control signal, such that the first voltage in a first high voltage level and the second voltage in a first low voltage level are generated when the first display region is driven,
wherein the driving controller outputs the voltage control signal, such that the first voltage in a second high voltage level lower than the first high voltage level and the second voltage in a second low voltage level higher than the first low voltage level are generated, when the non-boundary region of the second display region is driven, and
wherein the driving controller outputs the voltage control signal to generate the first voltage in a third high voltage level between the first high voltage level and the second high voltage level, and the second voltage in a third low voltage level between the first low voltage level and the second low voltage level, when the boundary region of the second display region is driven.