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    Pixel Sensing Device and Method, Data Driver and Organic Light-Emitting Display Device
    2.
    发明申请
    Pixel Sensing Device and Method, Data Driver and Organic Light-Emitting Display Device 审中-公开

    公开(公告)号：US20200175923A1

    公开(公告)日：2020-06-04

    申请号：US16572534

    申请日：2019-09-16

    Applicant: LG Display Co., Ltd.

    Inventor： Junghyeon KIM ,  Myunggi LIM

    IPC: G09G3/3258 ,  G09G3/3275

    Abstract: A display device includes a display panel, a sensing circuit, and a compensation circuit. The sensing circuit senses a current generated by a pixel of the display panel. The sensing circuit includes an integrator circuit, a comparator, and a counter. The integrator circuit is initialized to have a first reference voltage as an output. The output of the integrator circuit changes with a rate according to the sensed current. The comparator compares the output of the integrator circuit to a second reference voltage. The counter determines a time for the output of the integrator circuit to reach the second reference voltage from the first reference voltage. The compensation circuit receives the determined time and determines a compensation amount from the received time. The compensating circuit further compensates a display voltage for the pixel by the determined compensation amount in a subsequent display frame of the display device.

    Touch Sensor Integrated Display Device and Method for Driving the Same
    3.
    发明申请
    Touch Sensor Integrated Display Device and Method for Driving the Same 审中-公开
    触摸传感器集成显示设备及其驱动方法

    公开(公告)号：US20170046006A1

    公开(公告)日：2017-02-16

    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 ,  G06F3/044 ,  H01L27/32 ,  G09G3/3266 ,  G09G3/3225

    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.

    Abstract translation: 公开了一种触摸传感器集成显示装置及其驱动方法。 触摸传感器集成显示装置包括显示面板，其中像素阵列被分成多个触摸块，每个触摸块包括显示输入图像的像素和感测触摸输入的感测目标虚拟像素，以及感测对象虚拟 像素包括被配置为基于栅极 - 源极电压来控制源极 - 漏极电流的虚拟驱动TFT以及面板驱动电路，其在触摸感测时段中向扫描控制信号提供扫描控制信号和感测控制信号 并且通过对虚拟驱动TFT的栅极节点施加触摸驱动数据电压并将参考电压施加到虚拟驱动TFT的源极节点来设置栅极 - 源极电压以接通虚拟驱动TFT。

    ORGANIC LIGHT EMITTING DISPLAY, DEVICE FOR SENSING THRESHOLD VOLTAGE OF DRIVING TFT IN ORGANIC LIGHT EMITTING DISPLAY, AND METHOD FOR SENSING THRESHOLD VOLTAGE OF DRIVING TFT IN ORGANIC LIGHT EMITTING DISPLAY
    5.
    发明申请
    ORGANIC LIGHT EMITTING DISPLAY, DEVICE FOR SENSING THRESHOLD VOLTAGE OF DRIVING TFT IN ORGANIC LIGHT EMITTING DISPLAY, AND METHOD FOR SENSING THRESHOLD VOLTAGE OF DRIVING TFT IN ORGANIC LIGHT EMITTING DISPLAY 有权
    有机发光显示器，用于感测有机发光显示器中的驱动TFT的阈值电压的装置以及用于感测有机发光显示器中驱动TFT的阈值电压的方法

    公开(公告)号：US20170004764A1

    公开(公告)日：2017-01-05

    申请号：US15189403

    申请日：2016-06-22

    Applicant: LG Display Co., Ltd.

    Inventor： Taegung KIM ,  Junghyeon KIM

    IPC: G09G3/3225

    CPC classification number: G09G3/3225 ,  G09G3/3233 ,  G09G2300/0842 ,  G09G2310/0289 ,  G09G2320/0233 ,  G09G2320/0252 ,  G09G2320/0295 ,  G09G2320/043

    Abstract: A device for sensing a threshold voltage of a driving TFT in an organic light emitting display includes a data drive circuit and a timing controller. The data drive circuit applies a data voltage to a gate node of the driving TFT during a first programming period, determines a source node voltage of the driving TFT as a first sensing voltage during a first sensing period in which a gate-source voltage is constant and higher than the threshold voltage, applies another data voltage to the gate node during a second programming period, and determines the source node voltage as a second sensing voltage during a second sensing period in which the gate-source voltage is constant and higher than the threshold voltage. The timing controller calculates a ratio between the first and second sensing voltages, and obtains a change in the threshold voltage using a change in the ratio.

    Abstract translation: 用于感测有机发光显示器中的驱动TFT的阈值电压的装置包括数据驱动电路和定时控制器。 数据驱动电路在第一编程周期期间向驱动TFT的栅极节点施加数据电压，在栅源电压恒定的第一感测时段期间将驱动TFT的源节点电压确定为第一感测电压 并且高于阈值电压时，在第二编程周期期间向栅极节点施加另一数据电压，并且在栅极 - 源极电压恒定且高于第二感测周期的第二感测周期期间将源节点电压确定为第二感测电压 阈值电压。 定时控制器计算第一感测电压和第二感测电压之间的比率，并且使用该比率的变化来获得阈值电压的变化。

    ORGANIC LIGHT EMITTING DISPLAY FOR COMPENSATING FOR VARIATIONS IN ELECTRICAL CHARACTERISTICS OF DRIVING ELEMENT
    6.
    发明申请
    ORGANIC LIGHT EMITTING DISPLAY FOR COMPENSATING FOR VARIATIONS IN ELECTRICAL CHARACTERISTICS OF DRIVING ELEMENT 有权
    用于补充驱动元件电气特性变化的有机发光显示器

    公开(公告)号：US20150379937A1

    公开(公告)日：2015-12-31

    申请号：US14586567

    申请日：2014-12-30

    Applicant: LG DISPLAY CO., LTD.

    Inventor： Taegung KIM ,  Junghyeon KIM ,  Jinhan YOON

    IPC: G09G3/32 ,  G09G3/00

    CPC classification number: G09G3/3291 ,  G09G3/006 ,  G09G3/3225 ,  G09G3/3233 ,  G09G3/3258 ,  G09G3/3275 ,  G09G2300/0819 ,  G09G2300/0828 ,  G09G2310/027 ,  G09G2310/0291 ,  G09G2310/08 ,  G09G2320/0223 ,  G09G2320/0285 ,  G09G2320/029 ,  G09G2320/045 ,  G09G2330/12

    Abstract: An organic light emitting display is provided which offers shorter sensing time and higher sensing accuracy when sensing variations in electrical characteristics of a driving element. The organic light emitting display can include: a display panel with a plurality of pixels; a gate driving circuit that generates a sensing gate pulse corresponding to one line sensing ON time in a sensing operation and sequentially supplies the same to gate lines in a line sequential manner; a data driving circuit comprising a plurality of current integrators that perform an integration of the source-drain current of the driving TFT of each pixel input through the sensing lines and an ADC that sequentially digitizes the output of the current integrators to output digital sensed values; and a timing controller that controls the operations of the gate driving circuit and data driving circuit.

    Abstract translation: 提供一种有机发光显示器，当感测驱动元件的电特性的变化时，其提供较短的感测时间和更高的感测精度。 有机发光显示器可以包括：具有多个像素的显示面板; 栅极驱动电路，其在感测动作中产生对应于一行感测导通时间的感测门脉冲，并且以行顺序方式依次将其提供给栅极线; 数据驱动电路，包括多个电流积分器，其执行通过感测线输入的每个像素的驱动TFT的源极 - 漏极电流的积分;以及ADC，其顺序数字化当前积分器的输出以输出数字感测值; 以及控制门驱动电路和数据驱动电路的动作的定时控制器。

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