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.

公开(公告)号：US20180190218A1

公开(公告)日：2018-07-05

申请号：US15846062

申请日：2017-12-18

Applicant: LG Display Co., Ltd.

Inventor： SuHyuk JANG ,  JaeWoo LEE ,  HyeJin KIM ,  KyoungKoo LEE ,  Jinwon LEE ,  Hyojin KIM

IPC: G09G3/36

Abstract: A display device, a driving controller, and a driving method provide a fail-safe function. The operating states of driving-related circuits are monitored, and depending on the result of the monitoring, abnormal driving is rapidly and accurately normalized. The performance of display driving and the quality of displayed images are improved.

公开(公告)号：US20170169765A1

公开(公告)日：2017-06-15

申请号：US15377505

申请日：2016-12-13

Applicant: LG DISPLAY CO., LTD.

Inventor： Jinwon LEE ,  Suhyuk JANG ,  Hyojin KIM

IPC: G09G3/3258

CPC classification number: G09G3/3258 ,  G09G3/20 ,  G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2310/0251 ,  G09G2310/0262 ,  G09G2310/027 ,  G09G2310/08 ,  G09G2320/0204 ,  G09G2320/0233 ,  G09G2320/0247 ,  G09G2320/043 ,  G09G2330/025 ,  G09G2330/028 ,  G09G2330/06

Abstract: Provided are a display device and a method of controlling a power integrated circuit (PIC) thereof. The display device in one embodiment includes a controller for generating a switch pulse signal synchronized with an input image and initializing the switch pulse signal during a frame blank period in which the input image is not present; and a power integrated circuit (PIC) driven according to the switch pulse signal to generate power of a display panel. A duty ratio of the switch pulse signal is aligned to be greater than 0 and equal to or less than 3% during an alignment period set within a frame blank period, compared with a normal period. Thus, a change in the duty ratio of the switch pulse signal within the frame blank period is controlled to be minimized to prevent a degradation of image quality due to the variation of power.

公开(公告)号：US20170124960A1

公开(公告)日：2017-05-04

申请号：US15331100

申请日：2016-10-21

Applicant: LG DISPLAY CO., LTD.

Inventor： Hyojin KIM ,  Suhyuk JANG ,  Jeonga LEE ,  Jinwon LEE

IPC: G09G3/3291 ,  G09G3/3266 ,  H01L51/52

CPC classification number: G09G3/3291 ,  G09G3/3233 ,  G09G3/3266 ,  G09G2310/08 ,  G09G2320/041 ,  G09G2330/021 ,  G09G2330/028 ,  H01L51/529

Abstract: A power control device includes a temperature sensing unit sensing a temperature of a display panel and outputting a temperature sensing value, a timing controller generating a power control signal, and a power management integrated circuit (PMIC) adjusting a voltage level of high potential driving power to be applied to the display panel on a basis of the power control signal. When a voltage level of VDDEL is adjusted using a S-wire interface scheme, VDDEL is adjusted when the power control signal satisfies a preset condition, whereby an influence of noise is excluded and a stable output may be obtained.