US 12,431,061 B2
Display device operated with variable refresh rate and method of driving the same
So-Jeong Kim, Paju-si (KR); Nak-Yoon Kim, Paju-si (KR); and Chan Park, Paju-si (KR)
Assigned to LG Display Co., Ltd., Seoul (KR)
Filed by LG Display Co., Ltd., Seoul (KR)
Filed on Nov. 22, 2023, as Appl. No. 18/517,050.
Claims priority of application No. 10-2022-0175894 (KR), filed on Dec. 15, 2022.
Prior Publication US 2024/0203319 A1, Jun. 20, 2024
Int. Cl. G09G 3/20 (2006.01); G09G 3/3258 (2016.01)
CPC G09G 3/2096 (2013.01) [G09G 3/3258 (2013.01); G09G 2300/0842 (2013.01); G09G 2310/08 (2013.01); G09G 2320/0252 (2013.01); G09G 2320/0261 (2013.01); G09G 2320/041 (2013.01); G09G 2330/021 (2013.01); G09G 2340/0435 (2013.01); G09G 2354/00 (2013.01); G09G 2360/18 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A display device, comprising:
a display panel configured to display an image based on a gate signal and a data signal;
a gate driving circuit configured to generate the gate signal based on a gate control signal;
a data driving circuit configured to generate the data signal based on a data control signal and an image data; and
a timing controlling circuit configured to:
generate the gate control signal, the data control signal, and the image data based on an image signal and a plurality of timing signals; and
transmit the gate control signal, the data control signal, and the image data with a variable refresh rate profile different based on a temperature,
wherein the variable refresh rate profile includes first, second, and third variable refresh rate profiles each having a refresh rate,
wherein the timing controlling circuit is configured to classify the temperature into low temperature, room temperature, and high temperature and operate with the first, second, and third variable refresh rate profiles in the low temperature, room temperature, and high temperature, respectively,
wherein the low temperature is lower than the room temperature,
wherein the high temperature is higher than the room temperature,
wherein each of the first, second, and third variable refresh rate profiles includes a plurality of frames, and
wherein the refresh rate of the plurality of frames of the second variable refresh rate profile is greater than the refresh rate of the plurality of frames of the first variable refresh rate profile by 1 Hz to 2 Hz.