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    Display device and driving method thereof
    2.
    发明授权
    Display device and driving method thereof 有权

    公开(公告)号：US11043156B2

    公开(公告)日：2021-06-22

    申请号：US16861926

    申请日：2020-04-29

    Applicant: Samsung Display Co., Ltd.

    Inventor： Si Duk Sung ,  Sang Hyun Lee ,  Bo Yeon Kim

    IPC: G09G3/20

    Abstract: A display device includes a display panel, a power supply, a signal controller configured to generate first and second clock signals having a period, a clock signal generator configured to generate a gate clock signal that is raised to a high level voltage in synchronization with the first clock signal, and that falls to a low level voltage in synchronization with the second clock signal, generate a panel separation signal by comparing a voltage of the gate clock signal with a first reference voltage during a falling period during which the gate clock signal falls, and transfer the panel separation signal to the power supply or the signal controller, and a gate driver configured to sequentially apply a gate signal by using the gate clock signal, wherein the power supply or the signal controller is configured to stop outputting depending on the panel separation signal.

    ORGANIC LIGHT-EMITTING DISPLAY AND METHOD OF DRIVING THE SAME
    3.
    发明申请
    ORGANIC LIGHT-EMITTING DISPLAY AND METHOD OF DRIVING THE SAME 审中-公开
    有机发光显示器及其驱动方法

    公开(公告)号：US20160163255A1

    公开(公告)日：2016-06-09

    申请号：US14681030

    申请日：2015-04-07

    Applicant: SAMSUNG DISPLAY CO., LTD.

    Inventor： Bo Yeon Kim ,  Oh Jo Kwon

    IPC: G09G3/32 ,  G09G3/20

    CPC classification number: G09G3/3291 ,  G09G3/2003 ,  G09G3/3233 ,  G09G2300/0866 ,  G09G2310/0291 ,  G09G2310/0297 ,  G09G2320/0233 ,  G09G2320/029 ,  G09G2320/0295 ,  G09G2320/043 ,  G09G2350/00

    Abstract: An organic light-emitting display devices includes a display panel having first and second pixel groups, each group including first, second, and third pixels which emit light of different colors and a current measurement unit having a plurality of current measurement channels connected to the first and second pixel groups by data lines, wherein each of the current measurement channels includes a first measurement circuit connected to one of the first, second, and third pixels in the first pixel group and measures current characteristics of the connected one of the pixels and a second measurement circuit which measures current characteristics of one of the first, second, and third pixels, in the second pixel group, which emits light of the same color as that of light emitted from the one of the pixels connected to the first measurement circuit.

    Abstract translation: 有机发光显示装置包括具有第一和第二像素组的显示面板，每个组包括发射不同颜色的光的第一，第二和第三像素，以及具有连接到第一和第二像素的多个电流测量通道的电流测量单元 和第二像素组，其中每个当前测量通道包括连接到第一像素组中的第一，第二和第三像素中的一个像素的第一测量电路，并且测量连接的像素之一的电流特性和 第二测量电路，其测量第二像素组中的第一，第二和第三像素之一的电流特性，其发射与从连接到第一测量电路的像素中的一个发射的光的颜色相同的颜色的光。

    Display device and driving method thereof
    5.
    发明授权
    Display device and driving method thereof 有权

    公开(公告)号：US11514864B2

    公开(公告)日：2022-11-29

    申请号：US17185155

    申请日：2021-02-25

    Applicant: SAMSUNG DISPLAY CO., LTD.

    Inventor： Won Tae Kim ,  Myeong Su Kim ,  Bo Yeon Kim ,  Jae Han Lee ,  Whee Won Lee

    IPC: G09G3/3225 ,  G09G3/3275 ,  H04N5/374 ,  G09G3/3233 ,  G09G3/3258 ,  G09G3/36 ,  G09G5/00

    Abstract: A display device includes a display panel including a plurality of pixels connected to data lines and sensing lines, a data driver including a plurality of buffer amplifiers which supplies a first sensing voltage to the data lines during a first sensing period and a sensor which receives a first sensing signal from the pixels through the sensing lines during the first sensing period, and a global amplifier which supplies a second sensing voltage to the data lines during a second sensing period different from the first sensing period. The sensor receives a second sensing signal corresponding to the second sensing voltage from the pixels through the sensing lines during the second sensing period, and generates compensation data based on a difference value between the first sensing signal and the second sensing signal.

    Display device and driving method thereof
    7.
    发明授权
    Display device and driving method thereof 有权

    公开(公告)号：US10762816B2

    公开(公告)日：2020-09-01

    申请号：US16045918

    申请日：2018-07-26

    Applicant: SAMSUNG DISPLAY CO., LTD.

    Inventor： Jae Han Lee ,  Myeong Su Kim ,  Sun Koo Kang ,  Bo Yeon Kim ,  Dong Won Park ,  Tae Gon Im ,  Jung Hwan Cho

    IPC: G09G3/20 ,  G09G5/00

    Abstract: A display device may include a timing controller, a data driver and a plurality of pixels. The timing controller supplies a clock training pattern over a data/clock signal line in a first time period, and supplies pixel/control data over the data/clock signal line in a second time period. The data driver generates a clock signal, using the clock training pattern, in the first period, and generate a plurality of data voltages based on the plurality of pixel data, using the clock signal, in the second period. The plurality of pixels receive the plurality of data voltages and emit corresponding light. During the second period, the data driver outputs a feedback signal to the timing controller indicating that the locking of the clock signal has failed. The timing controller re-supplies the clock training pattern in response to the feedback signal.

    Display device, power supply device for display device, and driving method of display device
    8.
    发明授权
    Display device, power supply device for display device, and driving method of display device 有权

    公开(公告)号：US11288996B2

    公开(公告)日：2022-03-29

    申请号：US17201384

    申请日：2021-03-15

    Applicant: SAMSUNG DISPLAY CO., LTD.

    Inventor： Sang Hyun Lee ,  Myeong Su Kim ,  Bo Yeon Kim

    IPC: G09G3/20

    Abstract: A display device includes a display unit including a plurality of pixels, a scan driver applying a scan signal to a plurality of scan lines, a data driver applying a data signal to a plurality of data lines, and a power supply unit supplying a driving voltage to at least one among the display unit, the scan driver, and the data driver. The power supply unit includes an inductor connected between an input terminal to which an input voltage is input and a driving voltage output terminal to which the driving voltage is output, a switch connected between the inductor and a ground, and a switch controller outputting a first ramp pulse having a first frequency at a first load of the display device and outputting a second ramp pulse having a second frequency at a second load of the display device.

    Display device, power supply device for display device, and driving method of display device
    9.
    发明授权
    Display device, power supply device for display device, and driving method of display device 有权

    公开(公告)号：US10971046B2

    公开(公告)日：2021-04-06

    申请号：US16511659

    申请日：2019-07-15

    Applicant: SAMSUNG DISPLAY CO., LTD.

    Inventor： Sang Hyun Lee ,  Myeong Su Kim ,  Bo Yeon Kim

    IPC: G09G3/20

    Abstract: A display device includes a display unit including a plurality of pixels, a scan driver applying a scan signal to a plurality of scan lines, a data driver applying a data signal to a plurality of data lines, and a power supply unit supplying a driving voltage to at least one among the display unit, the scan driver, and the data driver. The power supply unit includes an inductor connected between an input terminal to which an input voltage is input and a driving voltage output terminal to which the driving voltage is output, a switch connected between the inductor and a ground, and a switch controller outputting a first ramp pulse having a first frequency at a first load of the display device and outputting a second ramp pulse having a second frequency at a second load of the display device.

    AMOLED display device including compensaton unit and driving method thereof
    10.
    发明授权
    AMOLED display device including compensaton unit and driving method thereof 有权

    公开(公告)号：US09805648B2

    公开(公告)日：2017-10-31

    申请号：US14253725

    申请日：2014-04-15

    Applicant: Samsung Display Co., Ltd.

    Inventor： Bo Yeon Kim ,  Oh Jo Kwon ,  Choong Sun Shin

    IPC: G09G3/3233

    CPC classification number: G09G3/3233 ,  G09G2300/0842 ,  G09G2320/045

    Abstract: A display device is disclosed. In one aspect, the display device includes a plurality of pixels, a plurality of data lines respectively connected to the pixels, and a compensation unit connected to at least one the data lines. The compensation unit includes a first capacitor storing a leakage current of a pixel connected to the data line, a second capacitor storing a difference current, where the difference current is the difference between a reference current and a pixel current measured when a data signal of a reference gray signal is applied to the pixel. The compensation unit also includes a comparator outputting a difference value between the voltages stored in the first and second capacitors. According to embodiments, is possible to measure an accurate pixel current regardless of a leakage current and accurately detect deterioration of a pixel.

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