公开(公告)号：US10395596B2

公开(公告)日：2019-08-27

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 ,  G09G3/20 ,  G09G3/3291 ,  G09G3/3233

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：US10062324B2

公开(公告)日：2018-08-28

申请号：US15299982

申请日：2016-10-21

Applicant: LG DISPLAY CO., LTD.

Inventor： Hyojin Kim ,  Suhyuk Jang ,  Hyejin Kim

IPC: G09G3/3291 ,  G09G3/3225

CPC classification number: G09G3/3225 ,  G09G2300/0452 ,  G09G2320/041 ,  G09G2320/045 ,  G09G2320/0626 ,  G09G2360/16

Abstract: A display device is disclosed in which a luminance control device includes a temperature sensor that detects a temperature of a display device; an average picture level part that calculates an average picture level, which defines an average brightness of an image input into the display device; and a luminance control part that generates a temperature-dependent peak luminance, which varies with temperature and average picture level, based on a top gain curve defining how a maximum luminance decreases as the temperature of the display device rises and a bottom gain curve defining how a minimum luminance decreases as the temperature of the display device rises, wherein the luminance control part fixes the temperature-dependent peak luminance at a specific luminance level, regardless of changes in average picture level, at a specific temperature in a high-temperature range which is higher than a room-temperature range.

公开(公告)号：US11521556B2

公开(公告)日：2022-12-06

申请号：US16598562

申请日：2019-10-10

Applicant: LG DISPLAY CO., LTD.

Inventor： Jinwon Lee ,  Suhyuk Jang ,  Hyojin Kim

IPC: G09G3/3275 ,  G09G5/39

Abstract: A channel control unit and a display device using the same are provided. The channel control unit can include a data driver that converts pixel data into data voltages and supplies the data voltages to data lines, and an ineffective channel controller that receives channel data, generates dummy data during an ineffective channel section indicated by the channel data, and sends the dummy data to the data driver.

公开(公告)号：US10217413B2

公开(公告)日：2019-02-26

申请号：US15360147

申请日：2016-11-23

Applicant: LG DISPLAY CO., LTD.

Inventor： Jeonga Lee ,  Suhyuk Jang ,  Jiwoong Park ,  Seokjun Kang ,  Jinwon Lee ,  Hyojin Kim ,  Junhwan Park

IPC: G09G3/20 ,  G09G3/3233 ,  G09G3/3258 ,  G09G3/3275

Abstract: Disclosed are an organic light emitting display and a method of driving the same. A charging circuit supplies charging voltages to organic light emitting diodes included in the plurality of subpixels, wherein a different charging voltage is supplied to at least one of the organic light emitting diodes. The data driver supplies data signals to data lines of the plurality of subpixels.

公开(公告)号：US09954014B2

公开(公告)日：2018-04-24

申请号：US15245944

申请日：2016-08-24

Applicant: LG DISPLAY CO., LTD.

Inventor： Soyoung Noh ,  Jinchae Jeon ,  Seungchan Choi ,  Junho Lee ,  Youngjang Lee ,  Sungbin Ryu ,  Kitae Kim ,  Bokyoung Cho ,  Jeanhan Yoon ,  Uijin Chung ,  Jihye Lee ,  Eunsung Kim ,  Hyunsoo Shin ,  Kyeongju Moon ,  Hyojin Kim ,  Wonkyung Kim ,  Jeihyun Lee ,  Soyeon Je

IPC: H01L27/12 ,  H01L27/32 ,  H01L49/02 ,  H01L29/417 ,  H01L29/786

CPC classification number: H01L27/1248 ,  H01L27/1225 ,  H01L27/1251 ,  H01L27/1255 ,  H01L27/1288 ,  H01L27/3258 ,  H01L27/3262 ,  H01L28/60 ,  H01L29/41733 ,  H01L29/78675 ,  H01L29/7869

Abstract: A thin film transistor substrate having two different types of thin film transistors on the same substrate, and a display using the same are discussed. The thin film transistor substrate can include a substrate, a first thin film transistor (TFT), a second TFT, a first storage capacitor electrode, an oxide layer, a nitride layer, a second storage capacitor electrode, a planar layer and a pixel electrode. The first TFT is disposed in a first area, the second TFT is disposed in a second area, and the first storage capacitor electrode is disposed in a third area on the substrate respectively. The oxide layer covers the first and second TFTs, and exposes the first storage capacitor electrode. The nitride layer is disposed on the oxide layer and covers the first storage capacitor electrode. The second storage capacitor electrode overlaps with the first storage capacitor electrode on the nitride layer. The planar layer covers the first and second TFTs, and the second storage capacitor electrode. The pixel electrode is disposed on the planar layer.

公开(公告)号：US20170154577A1

公开(公告)日：2017-06-01

申请号：US15360147

申请日：2016-11-23

Applicant: LG DISPLAY CO., LTD.

Inventor： Jeonga Lee ,  Suhyuk Jang ,  Jiwoong Park ,  Seokjun Kang ,  Jinwon Lee ,  Hyojin Kim ,  Junhwan Park

IPC: G09G3/3258 ,  G09G3/20 ,  G09G3/3275

CPC classification number: G09G3/3258 ,  G09G3/2003 ,  G09G3/3233 ,  G09G3/3275 ,  G09G2310/0248 ,  G09G2310/0251 ,  G09G2310/0297 ,  G09G2320/0242 ,  G09G2320/0295 ,  G09G2320/043 ,  G09G2320/045 ,  G09G2330/028

Abstract: Disclosed are an organic light emitting display and a method of driving the same. A charging circuit supplies charging voltages to organic light emitting diodes included in the plurality of subpixels, wherein a different charging voltage is supplied to at least one of the organic light emitting diodes. The data driver supplies data signals to data lines of the plurality of subpixels.

公开(公告)号：US09928783B2

公开(公告)日：2018-03-27

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: G09G3/32 ,  G09G3/3291 ,  G09G3/3266 ,  H01L51/52 ,  G09G3/3233

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.

公开(公告)号：US10453406B2

公开(公告)日：2019-10-22

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 ,  G09G3/00 ,  G09G3/20

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：US10134337B2

公开(公告)日：2018-11-20

申请号：US15377505

申请日：2016-12-13

Applicant: LG DISPLAY CO., LTD.

Inventor： Jinwon Lee ,  Suhyuk Jang ,  Hyojin Kim

IPC: G09G3/20 ,  G09G3/3258 ,  G09G3/3233

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.