Gate driving circuit and display apparatus having the same

    公开(公告)号:US11361728B2

    公开(公告)日:2022-06-14

    申请号:US17091317

    申请日:2020-11-06

    Abstract: A liquid crystal display apparatus including a gate driving circuit disposed on a liquid crystal display is provided. The apparatus further includes a data driving chip, disposed on the liquid crystal display panel, to apply data driving signals to data lines. The gate driving circuit includes a plurality of stages connected to one another in parallel. The odd-numbered stages of the stages each apply gate driving signals to odd-numbered gate lines of the gate lines, in response to a first clock signal and the even-numbered stages of the stages each apply the gate driving signals to even-numbered gate lines of the gate lines, in response to a second clock signal having an opposite phase from a phase of the first clock signal.

    Display device and method for improving image quality when driven at low-frequencies

    公开(公告)号:US11056060B2

    公开(公告)日:2021-07-06

    申请号:US16823894

    申请日:2020-03-19

    Abstract: A display device including: pixels coupled to first scan lines, second scan lines, emission control lines, and data lines; a first scan driver configured to supply a first scan signal to each of the first scan lines at a first frequency; a second scan driver configured to supply a second scan signal to each of the second scan lines at a second frequency corresponding to a driving frequency of the pixels; an emission driver configured to supply an emission control signal to each of the emission control lines at the first frequency; a data driver configured to supply a data signal to each of the data lines at the second frequency; and a timing controller configured to control the first scan driver, the second scan driver, the emission driver, and the data driver.

    Organic light-emitting diode display

    公开(公告)号:US10943534B2

    公开(公告)日:2021-03-09

    申请号:US15885513

    申请日:2018-01-31

    Inventor: Jin Jeon

    Abstract: An OLED display is disclosed. In one aspect, the display includes a scan line transmitting a scan signal, a data line crossing the scan line and transmitting a data voltage, and a driving voltage line crossing the scan line and configured to transmit a driving voltage. The display also includes a switching transistor electrically connected to the scan line and the data line. The display further includes a driving transistor and a compensation transistor. A driving gate electrode and a driving drain electrode are respectively connected to a compensation source electrode and a compensation drain electrode. The display also includes a light blocking layer at least partially covering the compensation transistor and an OLED electrically connected to the driving transistor.

    Pixel circuit and display device including the same

    公开(公告)号:US10909923B2

    公开(公告)日:2021-02-02

    申请号:US16812979

    申请日:2020-03-09

    Abstract: A pixel circuit includes first to fifth transistors, a capacitor, and a light emitting element. The first transistor is coupled between first and second power lines, and includes a gate electrode coupled to a first node and a back-gate electrode coupled to a second node. The second transistor is coupled between a data line and the first node, and includes a gate electrode coupled to a first scan line. The third transistor is coupled between a third power line and the first node, and includes a gate electrode coupled to a reference scan line. The fourth transistor is coupled between a second node and a fourth power line, and includes a gate electrode coupled to a second scan line. The fifth transistor is coupled between a first power line and the one electrode of the first transistor, and includes a gate electrode coupled to a light-emitting control line.

    Organic light emitting display device

    公开(公告)号:US10909918B2

    公开(公告)日:2021-02-02

    申请号:US15839455

    申请日:2017-12-12

    Abstract: An organic light emitting display device driven at a first driving frequency or a second driving frequency lower than the first driving frequency includes pixels coupled to first scan lines, second scan lines, and data lines, a first scan driver configured to supply scan signals to the first scan lines during a first period and a second period in one frame period, when the organic light emitting display device is driven at the second driving frequency, a second scan driver configured to supply scan signals to the second scan lines during the first period, when the organic light emitting display device is driven at the second driving frequency, and a data driver configured to supply a data signal to the data lines during the first period.

    DISPLAY DEVICE AND DRIVING METHOD THEREOF
    78.
    发明申请

    公开(公告)号:US20200349887A1

    公开(公告)日:2020-11-05

    申请号:US16933871

    申请日:2020-07-20

    Abstract: The present disclosure relates to a display device whose image quality is improved.A display device according to an embodiment of the present disclosure includes a first display area configured to include a plurality of first pixels which are disposed at least one horizontal line; a second display area configured to include a plurality of second pixels which are disposed in a plurality of horizontal lines; and an infrared (IR) light source configured to overlap the first display area in a plan view. The plurality of first pixels are set to be in a non-emission state during a period when the IR light source is driven.

    Organic light emitting display device including a sensing unit to measure at least one of current and voltage, and method of driving the same

    公开(公告)号:US10380943B2

    公开(公告)日:2019-08-13

    申请号:US15907144

    申请日:2018-02-27

    Abstract: An organic light emitting display device includes pixels connected to scan lines, data lines, and emission control lines to emit light components in response to amounts of current that flow from a first driving power source to a second driving power source, a sensing unit connected between the first or second driving power source and the pixels to measure to at least one of current and voltage, a controller to sense a control signal in response to at least one of the current and the voltage measured by the sensing unit, a timing controller to supply a plurality of emission start signals with different widths in a one frame period in response to the control signal when the organic light emitting display device is driven at a low frequency, and an emission driver to supply emission control signals to the emission control lines in response to the emission start signals.

    Gate driving circuit and display apparatus having the same

    公开(公告)号:US10283070B2

    公开(公告)日:2019-05-07

    申请号:US14994739

    申请日:2016-01-13

    Abstract: A liquid crystal display apparatus including a gate driving circuit disposed on a liquid crystal display is provided. The apparatus further includes a data driving chip, disposed on the liquid crystal display panel, to apply data driving signals to data lines. The gate driving circuit includes a plurality of stages connected to one another in parallel. The odd-numbered stages of the stages each apply gate driving signals to odd-numbered gate lines of the gate lines, in response to a first clock signal and the even-numbered stages of the stages each apply the gate driving signals to even-numbered gate lines of the gate lines, in response to a second clock signal having an opposite phase from a phase of the first clock signal.

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