US 12,190,784 B2
Display device for reducing flicker and electronic device comprising same
Juseok Lee, Suwon-si (KR); Minwoo Lee, Suwon-si (KR); and Seoyoung Lee, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Nov. 8, 2022, as Appl. No. 17/983,049.
Application 17/983,049 is a continuation of application No. PCT/KR2021/005170, filed on Apr. 23, 2021.
Prior Publication US 2023/0075226 A1, Mar. 9, 2023
Int. Cl. G09G 3/20 (2006.01)
CPC G09G 3/2096 (2013.01) [G09G 2310/06 (2013.01); G09G 2320/0247 (2013.01); G09G 2320/064 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A display device comprising:
a display panel; and
a display driving circuit configured to control the display panel and including a light emitting control driver to input a light emitting signal for controlling a brightness of the display panel into the display panel,
wherein the display driving circuit is further configured to:
input a light emitting control signal including a plurality of pulses to the light emitting control driver, to control the light emitting signal,
change an operating frequency of the light emitting control signal at a target time point from a first frequency in a first frame prior to the target time point to a second frequency in a second frame after the target time point, and
adjust pulse widths, which correspond to at least two pulses of the plurality of pulses included in the light emitting control signal, to differ from each other, in the second frame subsequent to the first frame, when a duty-ratio difference between a specific duty ratio and a target duty ratio is equal to or greater than a reference value, and
wherein the target duty ratio is calculated based on a last low level pulse among the plurality of pulses in the first frame and a first high level pulse right after the last low level pulse among the plurality of pulses in the second frame.