公开(公告)号：US20180182298A1

公开(公告)日：2018-06-28

申请号：US15849407

申请日：2017-12-20

Applicant: LG Display Co., Ltd.

Inventor： SuHyuk JANG ,  Hyojin KIM ,  JaeWoo LEE ,  HyeJin KIM ,  Jinwon LEE ,  DaSol JUN

IPC: G09G3/3258 ,  G09G3/3266 ,  G09G3/3291 ,  G09G3/20

CPC classification number: G09G3/3258 ,  G09G3/2014 ,  G09G3/2077 ,  G09G3/3233 ,  G09G3/3266 ,  G09G3/3291 ,  G09G2320/0238 ,  G09G2320/0247 ,  G09G2320/0271 ,  G09G2320/0276 ,  G09G2320/064 ,  G09G2320/0673

Abstract: An organic light emitting display device which improves expression capability in a low luminance level region, wherein, when receiving a pulse width modulation value indicating a low luminance level region, the device changes the received pulse width modulation value into a pulse width modulation dimming value indicating a high luminance level region, and expresses a low luminance level region through a luminance level indicated by the pulse width modulation dimming value and a pulse width modulation dimming operation. Luminance in a low luminance level region is controlled through a pulse width modulation dimming value indicating a high luminance level region and a pulse width modulation dimming operation, so that it is possible to minutely control luminance in a low luminance level region and improve expression capability in a low luminance level region.