公开(公告)号：US10467960B2

公开(公告)日：2019-11-05

申请号：US15858917

申请日：2017-12-29

Applicant: LG Display Co., Ltd.

Inventor： Osung Do ,  Kyoungdon Woo ,  Hyuckjun Kim ,  Jaeyoon Bae

IPC: G09G3/34 ,  G09G3/3233

Abstract: The present disclosure relates to an electroluminescent display device and a driving method of the same. The electroluminescent display device comprises a display panel, including a plurality of data lines, a plurality of sensing lines, a plurality of gate lines, and pixels which are arranged in matrix at each intersection between those lines to form a plurality of display lines; a sensing circuit, for sensing a pixel current in the pixels, integrating the pixel current to obtain a sensing voltage, and generating a sensing data based on the sensing voltage during a sensing operation period; and a compensation unit for calculating a compensation value for electrical characteristics of the pixels based on the sensing data.

公开(公告)号：US10777140B2

公开(公告)日：2020-09-15

申请号：US16422388

申请日：2019-05-24

Applicant: LG Display Co., Ltd.

Inventor： Hyunwook Kim ,  Hyuckjun Kim ,  Kyungrok Kim ,  Sanghoon Lee

IPC: G09G3/3233 ,  G09G3/3258

Abstract: The organic light emitting display device according to the present disclosure comprises an input unit configured to receive image data input at a variable frame frequency, a sensing control unit configured to generate a sensing control signal for sensing pixels to which the image data is to be applied, in a vertical blank period varying according to the variable frame frequency and a TFT compensating unit configured to sense driving characteristics of a driving element included in the pixels according to the sensing control signal to output a first sensing result. Among one variable frame period, a vertical active period for applying the image data to the pixels is fixed and the vertical blank period in which no image data is applied to the pixels is varied according to the variable frame frequency.

公开(公告)号：US20170031485A1

公开(公告)日：2017-02-02

申请号：US14981486

申请日：2015-12-28

Applicant: LG Display Co., Ltd.

Inventor： Taegung Kim ,  Sangho Yu ,  Hyuckjun Kim

IPC: G06F3/041 ,  G06F3/044 ,  G09G3/32

Abstract: A disclosed touch sensor integrated display device includes a display panel; and a data drive circuit configured to set a gate-source voltage to turn on a driving TFT in the display panel by applying a data voltage for touch sensing to a gate node of the driving TFT through a data line and a reference voltage to a source node of the driving TFT through a sensing line, during a reset period based on a scan control signal and a sensing control signal, and to output a sensing value by sensing a change in a source-drain current of the driving TFT caused by touch input, during a sensing period subsequent to the reset period.

Abstract translation: 所公开的触摸传感器集成显示装置包括显示面板; 以及数据驱动电路，其被配置为通过将数据线和参考电压施加到驱动TFT的栅极节点，将源极电压设置为使得显示面板中的驱动TFT接通，以将触摸感测的数据电压施加到源极 在基于扫描控制信号和感测控制信号的复位期间，通过感测线路驱动TFT的节点，并且通过感测由触摸输入引起的驱动TFT的源极 - 漏极电流的变化来输出感测值 ，在复位周期之后的感测期间。

公开(公告)号：US10678356B2

公开(公告)日：2020-06-09

申请号：US14981486

申请日：2015-12-28

Applicant: LG Display Co., Ltd.

Inventor： Taegung Kim ,  Sangho Yu ,  Hyuckjun Kim

IPC: G06F3/041 ,  G06F3/044 ,  G09G3/3233 ,  G09G3/3275

Abstract: A disclosed touch sensor integrated display device includes a display panel; and a data drive circuit configured to set a gate-source voltage to turn on a driving TFT in the display panel by applying a data voltage for touch sensing to a gate node of the driving TFT through a data line and a reference voltage to a source node of the driving TFT through a sensing line, during a reset period based on a scan control signal and a sensing control signal, and to output a sensing value by sensing a change in a source-drain current of the driving TFT caused by touch input, during a sensing period subsequent to the reset period.

公开(公告)号：US10515589B2

公开(公告)日：2019-12-24

申请号：US15685377

申请日：2017-08-24

Applicant: LG Display Co., Ltd.

Inventor： Hyuckjun Kim ,  Seokhyun Hong ,  Myunggi Lim

IPC: G09G3/3241 ,  G09G3/3291 ,  H01L51/50 ,  H05B33/08 ,  G09G3/3233

Abstract: The present invention provides an OLED display device including a display panel, a data driver and a timing controller. The display panel has sub-pixels for displaying images. The data driver supplies a data signal to data lines of the sub-pixels. The timing controller supplies the data signal to the data driver and controls the data driver. The data driver outputs a stress prevention voltage for preventing application of stress to driving transistors included in the sub-pixels in response to a stress compensation signal output from the timing controller, and the stress prevention voltage is applied to M (M being an integer equal to or greater than 1) sub-pixels selected per frame.

公开(公告)号：US20180174516A1

公开(公告)日：2018-06-21

申请号：US15835774

申请日：2017-12-08

Applicant: LG Display Co., Ltd.

Inventor： Hyuckjun Kim ,  Bumsik Kim ,  Jaeyoon Bae ,  Seungtae Kim ,  Kyoungdon Woo

IPC: G09G3/3233 ,  H01L51/52 ,  H01L27/32

CPC classification number: G09G3/3233 ,  G09G3/2081 ,  G09G2310/0205 ,  G09G2310/0264 ,  G09G2310/04 ,  G09G2320/103 ,  G09G2360/16 ,  H01L27/3276 ,  H01L51/5203

Abstract: A display device includes a display panel on which a plurality of pixels connected to data lines, reference lines, and gate lines are arranged, each pixel having an organic light emitting diode (OLED) and a driving thin film transistor (TFT); a data drive circuit to supply a data voltage to the data lines and a reference voltage to the reference lines; a gate drive circuit to generate a scan signal and a sensing signal and to supply the scan signal and the sensing signal to the gate lines, the scan signal being synchronized with the data voltage and the sensing signal being synchronized with the reference voltage; and a timing controller to divide one frame into a programming time, an emission time, and a non-emission time, and to control an emission duty by variably controlling the programming time based on an analysis of input image data.

公开(公告)号：US20240221685A1

公开(公告)日：2024-07-04

申请号：US18390307

申请日：2023-12-20

Applicant: LG Display Co., Ltd.

Inventor： Kyung-Rok Kim ,  Hyuckjun Kim ,  Min Kim

IPC: G09G3/3275

CPC classification number: G09G3/3275 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0294 ,  G09G2310/08

Abstract: A display device may include a plurality of subpixels respectively connected to a plurality of data lines; a data driving circuit configured to convert a compensated digital image data into an analog data voltage and to supply the analog data voltage to the data lines; a large-capacity memory configured to store initial compensation data based on a characteristic value for each of the plurality of subpixels; a high-speed memory configured to store sampled compensation data sampled from the initial compensation data for less than all of the plurality of subpixels in one frame; and a timing controller configured to control the gate driving circuit and the data driving circuit, to determine final compensation data based on at least one of the sampled compensation data and the initial compensation data, and to output the compensated digital image data based on an input image data and the final compensation data.

公开(公告)号：US11443670B2

公开(公告)日：2022-09-13

申请号：US16877852

申请日：2020-05-19

Applicant: LG DISPLAY CO., LTD.

Inventor： Hyuckjun Kim ,  SeungTae Kim ,  Yumin Hong

IPC: G09G3/20

Abstract: Embodiment of the present disclosure relate to a display device, a controller, a driving circuit, and a driving method capable of easily improving the motion picture response time through a multi-scanning operation of switching devices.

公开(公告)号：US11081062B2

公开(公告)日：2021-08-03

申请号：US16573675

申请日：2019-09-17

Applicant: LG Display Co., Ltd.

Inventor： Hyuckjun Kim ,  Bumsik Kim ,  Seungtae Kim ,  Kyoungdon Woo ,  Myunggi Lim ,  Byungjae Lee ,  Minkyu Song

IPC: G09G3/3283 ,  G09G3/3233 ,  G09G3/3258 ,  G01R17/02 ,  H04N5/357

Abstract: The current sensing device in the present disclosure comprises a plurality of sensing units each of which is connected to a sensing channel. The sensing unit may comprise a reference current generator generating a reference current; a current comparator outputting a comparator output signal based on a pixel current input through the sensing channel and the reference current, and removing an offset deviation component included in the pixel current and the reference current by using a reset current externally applied; and an edge triggered data flip-flop outputting a digital sensing value corresponding to the pixel current based on the comparator output signal.