US 12,266,306 B2
Display device including an emission driver for controlling an off period ratio based on dimming signal
Kyung-Woo Kim, Yongin-si (KR); Cheolmin Kim, Yongin-si (KR); and Sun-Koo Kang, Yongin-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed on Aug. 3, 2023, as Appl. No. 18/364,724.
Claims priority of application No. 10-2022-0165602 (KR), filed on Dec. 1, 2022.
Prior Publication US 2024/0185783 A1, Jun. 6, 2024
Int. Cl. G09G 3/3233 (2016.01)
CPC G09G 3/3233 (2013.01) [G09G 2300/0819 (2013.01); G09G 2300/0842 (2013.01); G09G 2310/08 (2013.01); G09G 2320/0626 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A display device comprising:
a display panel including pixels connected to emission lines;
a controller configured to receive a dimming signal and to generate an emission start signal, a first emission clock signal and a second emission clock signal; and
an emission driver configured to provide emission signals to the pixels through the emission lines in response to the emission start signal, the first emission clock signal and the second emission clock signal, wherein the controller is further configured to determine an off period ratio for the pixels in units of two or more frame periods in response to the dimming signal, and wherein the off period ratio corresponds to a ratio of a sum of widths of a plurality of off-level pulses of the emission start signal to a time length of the two or more consecutive frame periods.