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.

公开(公告)号：US10055057B2

公开(公告)日：2018-08-21

申请号：US15235096

申请日：2016-08-11

Applicant: LG Display Co., Ltd.

Inventor： Taegung Kim ,  Seungtae Kim ,  Junghyeon Kim

IPC: G06F3/041 ,  G02F1/1333 ,  G06F3/044 ,  G09G3/3233 ,  G09G3/3225 ,  G09G3/3266 ,  H01L27/32

CPC classification number: G06F3/0418 ,  G02F1/13338 ,  G02F1/13624 ,  G02F2001/13685 ,  G06F3/0412 ,  G06F3/044 ,  G09G3/3225 ,  G09G3/3233 ,  G09G3/3266 ,  G09G2300/0413 ,  G09G2300/0426 ,  G09G2310/08 ,  G09G2320/029 ,  H01L27/3223 ,  H01L27/323

Abstract: A touch sensor integrated display device and a method for driving the same are disclosed. The touch sensor integrated display device includes a display panel, in which a pixel array is divided into a plurality of touch blocks, each touch block includes pixels displaying an input image and a sensing target dummy pixel sensing a touch input, and the sensing target dummy pixel includes a dummy driving TFT configured to control a source-drain current based on a gate-source voltage, and a panel drive circuit, which in a touch sensing period, supplies a scan control signal and a sensing control signal to the sensing target dummy pixel and sets the gate-source voltage to turn on the dummy driving TFT by applying a touch driving data voltage to a gate node of the dummy driving TFT and applying a reference voltage to a source node of the dummy driving TFT.

公开(公告)号：US20140168184A1

公开(公告)日：2014-06-19

申请号：US13939956

申请日：2013-07-11

Applicant: LG DISPLAY CO., LTD.

Inventor： Seungtae Kim ,  Byungchul Ahn ,  Joonyoung Kim ,  Joonsun Yoon

IPC: G09G3/32

CPC classification number: G09G3/3258 ,  G09G3/3233 ,  G09G2310/0251 ,  G09G2310/0254 ,  G09G2310/067 ,  G09G2320/043 ,  G09G2320/048 ,  G09G2330/027 ,  G09G2360/16

Abstract: An organic light emitting display includes a display panel including data lines, gate lines crossing the data lines, and pixels and a panel driving circuit which supplies a data voltage to the pixels of the display panel during a power-on period and then is additionally driven for a predetermined power-on delay duration time delayed from a power-off start time of a power input signal. The panel driving circuit supplies a reverse polarity recovery voltage having a polarity opposite the data voltage to the pixels or supplies a recovery voltage, which is different from a gate voltage of a driving element of each of the pixels, to a source terminal of the driving element of each pixel for the predetermined power-on delay duration time.

Abstract translation: 有机发光显示器包括：显示面板，包括数据线，与数据线交叉的栅极线;以及像素;以及面板驱动电路，其在上电周期期间向显示面板的像素提供数据电压，然后另外驱动 用于从电力输入信号的断电开始时间延迟的预定的上电延迟持续时间。 面板驱动电路将具有与数据电压相反的极性的反向极性恢复电压提供给像素，或者将不同于每个像素的驱动元件的栅极电压的恢复电压提供给驱动器的源极端子 元素，用于预定的上电延迟持续时间。

公开(公告)号：US11588993B2

公开(公告)日：2023-02-21

申请号：US16583670

申请日：2019-09-26

Applicant: LG Display Co., Ltd.

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

IPC: H04N5/369 ,  G09G3/3291 ,  G09G3/3233 ,  H04N5/374

Abstract: A current sensing device and the organic light-emitting display device including the same are disclosed. The current sensing device may include a plurality of sensing units, each sensing unit playing a role of converting a pixel current input through a sensing line into a digital sensing value, and each sensing unit comprising: a current integrator including an integrating amplifier and a feedback capacitor, the integrating amplifier comprising an inverting input terminal, a non-inverting input terminal and an output terminal, wherein the feedback capacitor is connected between the inverting input terminal and the output terminal, and a first reference voltage is input to the non-inverting input terminal; and a current transmitting unit connected between the sensing line and the current integrator to separate the electric connection of the sensing line and the current integrator, wherein the current transmitting unit mirrors the pixel current and causes the mirrored current to be output from the inverting input terminal of the integrating amplifier.

公开(公告)号：US09520084B2

公开(公告)日：2016-12-13

申请号：US14132783

申请日：2013-12-18

Applicant: LG DISPLAY CO., LTD.

Inventor： Sangho Yu ,  Seungtae Kim

IPC: G09G3/3233 ,  G09G3/32

CPC classification number: G09G3/3233 ,  G09G2300/0842 ,  G09G2320/0233 ,  G09G2320/0295 ,  G09G2320/043

Abstract: An image quality compensation device for an organic light emitting display includes: a memory having first and second update blocks selectively storing first and second period compensation values, which are sequentially updated at regular intervals; and a timing controller that configures the first update block as either the current memory page for data loading or the next memory page for data writing and the second update block as the other one of the two, based on a preset check code, and updates the memory by calculating the second period compensation value with the passage of driving time based on the first period compensation value loaded from the update block configured as the current memory page, writing the second period compensation value to the update block configured as the next memory page, and then erasing the first period compensation value from the update block configured as the current memory page.

Abstract translation: 用于有机发光显示器的图像质量补偿装置包括：存储器，其具有选择性地存储以规则间隔顺序更新的第一和第二周期补偿值的第一和第二更新块; 以及定时控制器，其基于预设的检查码将第一更新块配置为用于数据加载的当前存储器页面或用于数据写入的下一个存储器页面和作为另一个存储器页面的另一个存储器页面，并且更新 通过基于从被配置为当前存储器页的更新块加载的第一周期补偿值计算出驱动时间的第二周期补偿值，将第二周期补偿值写入配置为下一个存储器页的更新块， 然后从配置为当前存储器页的更新块擦除第一周期补偿值。

公开(公告)号：US10599185B2

公开(公告)日：2020-03-24

申请号：US15662694

申请日：2017-07-28

Applicant: LG Display Co., Ltd.

Inventor： Sangho Yu ,  Seungtae Kim

IPC: G06F1/16 ,  G09F9/30 ,  H04M1/02 ,  H01L51/00

Abstract: The present disclosure provides a rollable flexible display device. The rollable flexible display device including a display panel that displays an image and rolls or unrolls like a scroll, a sensing circuit that performs sensing to detect rolled and unrolled portions of the display panel and outputs sensed values, and a device adjusting part that adjusts the operating conditions of the display panel based on the sensed values sent from the sensing circuit.

公开(公告)号：US10249244B2

公开(公告)日：2019-04-02

申请号：US15631860

申请日：2017-06-23

Applicant: LG Display Co., Ltd.

Inventor： Seungtae Kim ,  Myunggi Lim ,  Seokhyun Hong

IPC: G09G5/00 ,  G09G3/3258 ,  G09G3/00

Abstract: An organic light-emitting display comprises: a display panel with a plurality of pixels; a plurality of source driver ICs comprising sensing blocks that are connected to the pixels and sense the electrical characteristics of the pixels; and a calibration block that applies test currents to the sensing blocks in order to sense offset variations between the sensing blocks in a preset calibration mode. The calibration block comprises: a plurality of discrete current sources that generate the test currents; and a switch array that connects the source driver ICs and the discrete current sources, wherein two or more neighboring source driver ICs share one discrete current source, and each source driver IC is selectively connected to two or more discrete current sources.

公开(公告)号：US10152920B2

公开(公告)日：2018-12-11

申请号：US15480121

申请日：2017-04-05

Applicant: LG Display Co., Ltd.

Inventor： Chulwon Lee ,  Seungtae Kim

IPC: G09G3/3233 ,  H01L27/32 ,  G09G3/3291

Abstract: A current sensing unit can include a current sink circuit connected to a sensing line, which reduces a pixel current fed via the sensing line by an amount equal to a sink current; a current integrator connected to the sensing line, which accumulates an adjusted current from the sensing line and outputs an integrated value based on the pixel current minus the sink current; a sampling part that samples and holds the integrated value; and an analog-to-digital converter that converts the integrated value from an analog value to a digital sensed value.

公开(公告)号：US10964273B2

公开(公告)日：2021-03-30

申请号：US16593182

申请日：2019-10-04

Applicant: LG Display Co., Ltd.

Inventor： Hyemi Oh ,  Minkyu Song ,  Jisu Choi ,  Byungjae Lee ,  Myunggi Lim ,  Kyoungdon Woo ,  Seungtae Kim ,  Bumsik Kim

IPC: G09G3/3291

Abstract: A pixel sensing device, an organic light emitting display device and a pixel compensation method thereof are disclosed. The pixel sensing device comprises a plurality of current integrators for sensing driving characteristics of pixels. Each current integrator comprises: an operational amplifier equipped with an inverting input terminal to which a first input voltage is applied according to a pixel current of the pixels, a non-inverting input terminal to which a second input voltage is applied according to the pixel current, and an output terminal through which an integral voltage corresponding to the pixel current is output; and a feedback capacitor connected between the inverting input terminal and the output terminal. The operational amplifier comprises: a pre-amplifying unit for lowering an amplifier input gain and being equipped with the inverting and non-inverting input terminals; and two gain amplifying units for receiving an output of the pre-amplifying unit and for making an amplifier output gain higher than the amplifier input gain.

公开(公告)号：US10593297B2

公开(公告)日：2020-03-17

申请号：US15659887

申请日：2017-07-26

Applicant: LG Display Co., Ltd.

Inventor： Sanghoon Lee ,  Seungtae Kim

IPC: G09G3/30 ,  G09G5/18 ,  G09G3/34 ,  G09G5/395 ,  G09G3/3275 ,  G09G3/3233 ,  G09G3/3266 ,  G09G3/20

Abstract: The present disclosure provides a timing controller, a display device using the same, and a method of driving the display device. The display device includes a display panel displaying an image, at least two data drivers supplying a data signal to the display panel, at least two slave timing controllers that control the at least two data drivers, respectively, and supply the data signal to the at least two data drivers, respectively, and a master timing controller that controls the at least two slave timing controllers and that itself splits an externally supplied data signal and distributes the same to the at least two slave timing controllers.