公开(公告)号：US20210193047A1

公开(公告)日：2021-06-24

申请号：US17130362

申请日：2020-12-22

Applicant: LG Display Co., Ltd.

Inventor： Yong-Chul KWON ,  Sung-Hoon KIM

IPC: G09G3/3258 ,  G09G3/3275

Abstract: An electroluminescence display device lowers peak brightness of a screen image based on a preset peak luminance control (PLC) curve as an average picture level (APL) of the image is increased. The electroluminescence display device includes a memory and a timing controller. The memory stores an ELVDD reference profile for defining EVDD adjusting levels for adjusting a high-potential pixel voltage applied to pixels of the screen image in units of 1 image frame and an MDATA reference profile for defining Max data adjusting values for adjusting image data applied to the pixels of the screen image in the units of 1 image frame, for matching target peak brightness for each preset APL section with the PLC curve. The timing controller calculates an EVDD adjusting value and a Max data adjusting value of a first image frame based on an analysis result of image data of the first image frame and information stored in the memory and modulates image data of the first image frame based on the Max data adjusting value.

公开(公告)号：US20180190238A1

公开(公告)日：2018-07-05

申请号：US15856900

申请日：2017-12-28

Applicant: LG Display Co., Ltd.

Inventor： Dong-Won PARK ,  Jang-Hwan KIM ,  Jong-Min PARK ,  Joon- Hee LEE ,  Yong-Chul KWON

IPC: G09G5/00 ,  G09G3/20

CPC classification number: G09G5/008 ,  G09G3/2092 ,  G09G3/2096 ,  G09G3/3685 ,  G09G2310/0243 ,  G09G2310/0297 ,  G09G2330/021 ,  G09G2330/06 ,  G09G2370/045 ,  G09G2370/08 ,  G09G2370/10

Abstract: The present disclosure relates to a display interface device which can increase display information transmission efficiency and reduce power consumption and EMI, in which a transmission part transmits clock edge information included in a data packet of each channel at a different timing from clock edge information included in data packets of other channels. A reception part detects a clock edge of each channel from the data packet transmitted through each channel, generates an internal clock signal of each channel, synchronized with the detected clock edge, corrects a delay of each channel depending on a result of a logical operation performed on a delayed clock edge of a channel and a clock edge of another channel to further generate an internal clock signal of each channel, and restores the display information from the data packet of each channel using the internal clock signal of each channel.

公开(公告)号：US20210201784A1

公开(公告)日：2021-07-01

申请号：US17127337

申请日：2020-12-18

Applicant: LG Display Co., Ltd.

Inventor： Jung-Jae KIM ,  Yong-Chul KWON ,  Soon-Dong CHO ,  Sang-Uk LEE ,  Dongwon PARK

IPC: G09G3/3233 ,  G09G3/3266 ,  G09G3/20

Abstract: A light emitting display device includes a display panel, a power supply configured to supply a first potential voltage and a second potential voltage to the display panel, and a switch circuit unit configured to sense the first potential voltage applied to the display panel and to feedback the first potential voltage to the power supply, wherein the power supply compensates for the first potential voltage based on the first potential voltage fed back from the switch circuit unit and to output the compensated first potential voltage.

公开(公告)号：US20190096329A1

公开(公告)日：2019-03-28

申请号：US16139729

申请日：2018-09-24

Applicant: LG Display Co., Ltd.

Inventor： Yong-Chul KWON ,  Dong-Won PARK ,  Dong-Woo LEE ,  Joon-Hee LEE

IPC: G09G3/3258 ,  H01L27/32

CPC classification number: G09G3/3258 ,  G09G3/3225 ,  G09G2300/0842 ,  G09G2300/0866 ,  G09G2310/08 ,  G09G2320/0295 ,  G09G2320/043 ,  G09G2320/048 ,  G09G2360/16 ,  H01L27/3297

Abstract: An organic light-emitting diode (OLED) display can include a display panel including sub-pixels; a deterioration sensing unit configured to sense a deterioration state of the display panel; a power supply configured to output a high voltage for driving the sub-pixels; and a timing controller configured to: receive a deterioration sensing result including information on the deterioration state of the display panel from the deterioration sensing unit, continuously vary the high voltage based on the deterioration sensing result received from the deterioration sensing unit, and provide the varied high voltage to the sub-pixels.

公开(公告)号：US20180190196A1

公开(公告)日：2018-07-05

申请号：US15815687

申请日：2017-11-16

Applicant: LG Display Co., Ltd.

Inventor： Yong-Chul KWON ,  Jang-Hwan KIM ,  Dong-Won PARK ,  Jong-Min PARK ,  Joon-Hee LEE

IPC: G09G3/3241 ,  H01L27/32

CPC classification number: G09G3/3241 ,  G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0251 ,  G09G2310/0262 ,  G09G2310/0283 ,  G09G2310/08 ,  G09G2320/0295 ,  G09G2320/043 ,  H01L27/3206 ,  H01L27/3211 ,  H01L27/3244

Abstract: An OLED display device capable of preventing luminance deviation caused by a voltage drop of an EVDD is disclosed. The OLED display device generates a reference voltage, a voltage level of which varies with distance from the data driver and supplies the reference voltage to the display panel through the data driver.

公开(公告)号：US20180190192A1

公开(公告)日：2018-07-05

申请号：US15787670

申请日：2017-10-18

Applicant: LG Display Co., Ltd.

Inventor： Yong-Chul KWON ,  Jang-Hwan KIM ,  Dong-Won PARK ,  Jong-Min PARK ,  Joon-Hee LEE

IPC: G09G3/3233 ,  G09G3/3266 ,  G09G3/3275

CPC classification number: G09G3/3233 ,  G09G3/3266 ,  G09G3/3275 ,  G09G2300/0861 ,  G09G2310/0248 ,  G09G2310/0251 ,  G09G2310/0262 ,  G09G2310/0291 ,  G09G2310/0297 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/0252 ,  G09G2320/0295 ,  G09G2320/043 ,  G09G2320/0693 ,  G09G2330/021 ,  G09G2330/028 ,  G09G2330/08

Abstract: An OLED display device capable of simplifying the configuration of an external compensation circuit and reducing a compensation time is disclosed. The OLED display device includes a display panel including a pixel, a feedback compensator circuit connected to the pixel through a data line and a sensing line of the display panel, the feedback compensator circuit including an error amplifier configured to receive, through a feedback line, a feedback current flowing into the sensing line and a feedback voltage generated by a sensing resistor, from the pixel during a scan period, compare a data input voltage with the feedback voltage to adjust a data output voltage supplied to the pixel through the data line, and set a target current for driving an OLED element in the pixel, and a precharger configured to precharge the feedback compensator circuit at a front part of the scan period.