US 12,148,397 B2
Display device and operation method therefor
Eunkwang Jang, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 18/550,357
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Dec. 14, 2021, PCT No. PCT/KR2021/018928
§ 371(c)(1), (2) Date Sep. 13, 2023,
PCT Pub. No. WO2022/231088, PCT Pub. Date Nov. 3, 2022.
Claims priority of application No. 10-2021-0054962 (KR), filed on Apr. 28, 2021.
Prior Publication US 2024/0169936 A1, May 23, 2024
Int. Cl. G09G 3/34 (2006.01); G09G 3/20 (2006.01)
CPC G09G 3/3406 (2013.01) [G09G 3/2003 (2013.01); G09G 2300/0842 (2013.01); G09G 2320/0247 (2013.01); G09G 2320/0626 (2013.01); G09G 2320/0673 (2013.01); G09G 2360/16 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A display device comprising:
a display panel including a plurality of pixels;
a backlight unit configured to provide a light to the display panel; and
a processor is configured to:
when a refresh rate of the image signal is changed, obtain a brightness compensation value suitable for the changed refresh rate, and
apply a RGB data value suitable for the obtained brightness compensation value to each pixel,
wherein if the brightness compensation value of the image signal is not changed, in a state in which a luminance control value of the backlight unit is fixed, a first luminance change range measured according to the change of the refresh rate is larger than a second luminance change range,
if the brightness compensation value of the image signal is changed in a state in which the luminance control value of the backlight unit is fixed, the second luminance change range is measured according to the change of the refresh rate.