US 12,087,237 B2
Display device and method of driving the same
Jaehoon Lee, Seoul (KR); and Kyoungho Lim, Hwaseong-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Apr. 10, 2023, as Appl. No. 18/132,904.
Application 18/132,904 is a continuation of application No. 17/377,239, filed on Jul. 15, 2021, granted, now 11,657,765.
Claims priority of application No. 10-2020-0120255 (KR), filed on Sep. 18, 2020.
Prior Publication US 2023/0245625 A1, Aug. 3, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G09G 3/3275 (2016.01)
CPC G09G 3/3275 (2013.01) [G09G 2310/0272 (2013.01); G09G 2320/046 (2013.01)] 27 Claims
OG exemplary drawing
 
1. A display device comprising:
a display panel to display an image;
a panel driver to drive the display panel; and
a controller to control driving of the panel driver,
wherein the controller comprises a first circuit to receive frame data during an active period of a frame having the active period and a variable blank period, to shift a position of the frame data in response to a shift start signal to generate shift data, and to provide the shift data to the panel driver, and a second circuit to count the variable blank period based on a reference clock to generate a count value of the frame, to compare a cumulative value obtained by cumulating the count value with a predetermined reference value, and to determine the activation time point of the shift start signal according to the compared result.