Display panel driving method for saving power and display panel driving circuit thereof

    公开(公告)号:US11074880B2

    公开(公告)日:2021-07-27

    申请号:US16548823

    申请日:2019-08-22

    Inventor: Cheng-Chung Yeh

    Abstract: A display panel driving method includes scanning a plurality of first gate lines of a plurality of gate lines according to a first predetermined order during a first time period of a frame period, and scanning a plurality of second gate lines of the gate lines according to a second predetermined order during a second time period of the frame period. Voltage polarity of a data signal located in any of a plurality of data lines remains unchanged during the first time period. Voltage polarity of the data signal located in any of the data lines remains unchanged during the second time period.

    PROXIMITY SENSOR AND PROXIMITY SENSING METHOD

    公开(公告)号:US20210103377A1

    公开(公告)日:2021-04-08

    申请号:US16507264

    申请日:2019-07-10

    Inventor: CHIH-YU LIN

    Abstract: The present invention relates to a proximity sensor and a proximity sensing method. The proximity sensor includes a sensing element and a sensing circuit. The sensing circuit is coupled to the sensing element and transmits a first driving signal and a second signal to the sensing element, respectively. The sensing element receives the first driving signal and the second driving signal, respectively, and generates a first sensing signal and a second sensing signal, respectively. The sensing circuit generates a proximity signal according to the first sensing signal and the second sensing signal. Therefore, the present invention may improve the accuracy of sensing the proximity of the human body whether near to the sensor. In addition, the sensing circuit is further coupled to a radio-frequency circuit, and the sensing circuit transmits a driving signal or/and receives a sensing signal according to the state of the radio-frequency circuit, thereby reducing interference of the sensing circuit to the radio-frequency circuit.

    SOURCE DRIVER AND COMPOSITE LEVEL SHIFTER

    公开(公告)号:US20210043122A1

    公开(公告)日:2021-02-11

    申请号:US16589381

    申请日:2019-10-01

    Inventor: SHENG-YU LIN

    Abstract: The invention relates to a source driver and a composite level shifter. The source driver comprises a data buffer circuit, a plurality of level shifters and a plurality of driving circuits. The data buffer circuit receives and registers a plurality of pixel data during a driving period. The level shifters convert the voltage levels of the pixel data registered in the data buffer circuit during the driving period. The driving circuits generate a plurality of source signals according to the converted pixel data during driving period. The data buffer circuit may comprise a plurality of composite level shifters for converting the voltage levels of the pixel data, and latching the converted pixel data.

    CURRENT SOURCE CIRCUIT
    134.
    发明申请

    公开(公告)号:US20210041904A1

    公开(公告)日:2021-02-11

    申请号:US16826652

    申请日:2020-03-23

    Abstract: The invention relates to a current source circuit, which includes a current generating circuit, a plurality of current mirror circuits, and a switching circuit. The current generating circuit generates a plurality of reference currents, which comprise a first reference current and a second reference current. The current mirror circuits output a plurality of mirror currents according to the first reference current and the second reference current. The switching circuit is coupled between the current generating circuit and the current mirror circuits. The first reference current is transmitted to the current mirror circuits through the switching circuit, and the second reference current is transmitted to the current mirror circuits through the switching circuit.

    Driving circuit of display panel and driving module thereof, and display device and method for manufacturing the same

    公开(公告)号:US10354608B2

    公开(公告)日:2019-07-16

    申请号:US15920903

    申请日:2018-03-14

    Abstract: The present invention relates to a driving circuit of a display panel. A plurality of driving units produce a reference driving voltage according to a gamma voltage of a gamma circuit, respectively. A plurality of digital-to-analog converting circuits receive the reference driving voltages output by the plurality of driving units, and select one of the plurality of reference driving voltage as a data driving voltage according to pixel data, respectively. The plurality of digital-to-analog converting circuits transmit the plurality of data driving voltages to the display panel for displaying images. A voltage boost circuit is used for producing a first supply voltage and providing the first supply voltage to the plurality of digital-to-analog converting circuits. At least a voltage boost unit is used for producing a second supply voltage and providing the second supply voltage to the plurality of driving units.

    TOUCH CIRCUIT
    136.
    发明申请
    TOUCH CIRCUIT 审中-公开

    公开(公告)号:US20190102040A1

    公开(公告)日:2019-04-04

    申请号:US16149448

    申请日:2018-10-02

    Abstract: The present invention provides a touch circuit, which comprises a detection circuit and an emulation circuit. The detection circuit detects a detection signal; the emulation circuit includes a reference load and receives a signal. The emulation circuit generates an emulation signal according to the reference load and the signal. The touch circuit outputs a touch signal according to the detection signal and the emulation signal.

    Data conversion method and display device using the same

    公开(公告)号:US10140939B2

    公开(公告)日:2018-11-27

    申请号:US15052898

    申请日:2016-02-25

    Abstract: A data conversion method for converting display data of a display device includes detecting an ambient temperature of the display device; receiving a specific display data to be displayed by the display device, a previous display data in N row before the specific display data, and a next display data in N row after the specific display data; converting the specific display data into a display output data according to the previous display data, the next display data and the ambient temperature; and outputting the display output data to perform displaying.

    Driving module for display device and related driving method

    公开(公告)号:US10102819B2

    公开(公告)日:2018-10-16

    申请号:US15156341

    申请日:2016-05-17

    Abstract: A driving module for a display device includes a first driving unit, for generating a plurality of data driving signals to a plurality of data lines of the display device according to a first control signal; and a control unit, for generating the first control signal to the first driving unit and a second control signal to a second driving unit of the display device; wherein the control unit controls the second driving unit to generate a plurality of gate driving signals to a plurality of scan lines of the display device via the second control signal, and durations of a plurality of gate enable periods in the plurality of gate driving signals are different.

    TOUCH PANEL AND TOUCH DETECTION CIRCUIT THEREOF

    公开(公告)号:US20180260057A1

    公开(公告)日:2018-09-13

    申请号:US15903445

    申请日:2018-02-23

    Inventor: MIN-NAN LIAO

    Abstract: The present invention provides a touch panel and the touch detection circuit thereof, which comprise a gate driving circuit, a source driving circuit, and a detection circuit. The gate driving circuit is coupled to a plurality of gate lines of a display panel, outputs a plurality of gate signals to the plurality of gate lines, and controls state transition of the plurality of gate signals. The source driving circuit is coupled to a plurality of source lines of the display panel. The detection circuit is coupled to the plurality of source lines or to a portion of the plurality of source lines. The detection circuit detects the levels of the plurality of signals on the coupled source lines when the gate signals change states and generates a plurality of detection signals.

    VOLTAGE BOOSTING CIRCUIT CAPABLE OF MODULATING DUTY CYCLE AUTOMATICALLY

    公开(公告)号:US20180241309A1

    公开(公告)日:2018-08-23

    申请号:US15959424

    申请日:2018-04-23

    Inventor: CHUNG-HSIN SU

    CPC classification number: H02M3/156

    Abstract: The present invention relates to a voltage boosting circuit capable of modulating duty cycle automatically, which comprises an inductor, a switching module, and a control circuit. The inductor is coupled to an input for receiving an input power. The switching module is coupled among the inductor, a ground, and an output for switching so that the input power can charge the inductor and produce charged energy, or for switching so that the charged energy of the inductor can discharge to the output and produce an output voltage. The control circuit outputs at least a control signal according to the charged energy and the output voltage for controlling the switching module to switch the inductor and provide the input power to the output, to switch the charged energy of the inductor to discharge to the output, or to switch the input power to charge the inductor.

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