Driving circuit for display panel
    182.
    发明授权

    公开(公告)号:US09984646B2

    公开(公告)日:2018-05-29

    申请号:US15666808

    申请日:2017-08-02

    Inventor: Jia-Chi Zheng

    CPC classification number: G09G3/3696 G09G3/3648 G09G2320/0276 G09G2330/024

    Abstract: The present invention provides a driving circuit for display panel, which comprises a power supply circuit and a driving unit. The power supply circuit outputs a driving power supply voltage. The driving unit produces a driving signal according to a data signal and the driving power supply voltage for driving the display panel. In addition, the voltage level of the driving power supply voltage increases to a predetermined level. Thereby, during the process of charging the display panel by the data driving circuit, the driving power supply voltage output by the power supply circuit increases from a low level to a predetermined level for reducing the power consumption of the driving circuit.

    Gate Driving Circuit and Display Module
    183.
    发明申请

    公开(公告)号:US20180130436A1

    公开(公告)日:2018-05-10

    申请号:US15860646

    申请日:2018-01-02

    CPC classification number: G09G3/3677 G09G2310/0289

    Abstract: A gate driving circuit for providing a scan signal to a LCD panel is disclosed. The gate driving circuit includes a positive level shifter, a capacitive coupling level shifter, a P-type transistor and an N-type transistor. The positive level shifter shifts up a gate control signal to generate a first control signal. The capacitive coupling level shifter shifts up and down the first control signal to generate positive and negative control signals. The P-type transistor P-type transistor receives the negative control signal and a negative power voltage. The N-type transistor receives the negative control signal and a negative power voltage. An absolute value of a voltage difference between the positive power voltage and the positive control signal and an absolute value of a voltage difference between the negative power voltage and the negative control signal are less than a medium voltage device endurance limit.

    Gate driving circuit and display module

    公开(公告)号:US09905180B2

    公开(公告)日:2018-02-27

    申请号:US14880294

    申请日:2015-10-12

    CPC classification number: G09G3/3677 G09G2310/0289

    Abstract: A gate driving circuit for providing a scan signal to a LCD panel is disclosed. The gate driving circuit includes at least one positive level shifter, at least one negative level shifter, a pair of P-type transistor and an N-type transistor. The positive level shifter is utilized for shifting up agate control signal to generate a positive control signal. The negative level shifter is utilized for shifting down the gate control signal to generate a negative control signal. The pair of transistors is utilized for outputting a positive power voltage or a negative power voltage as the scan signal according to the positive control signal and the negative control signal. The positive power voltage minus the positive control signal is less than six volts. The negative control signal minus the negative power voltage is less than six volts.

    AREA-SAVING DRIVING CIRCUIT FOR DISPLAY PANEL

    公开(公告)号:US20170345385A9

    公开(公告)日:2017-11-30

    申请号:US14146061

    申请日:2014-01-02

    Inventor: MIN-NAN LIAO

    Abstract: The present invention relates to an area-saving driving circuit for a display panel, which comprises a plurality of digital-to-analog converting circuits convert input data, respectively, and produce a pixel signal. A plurality of driving units are coupled to the plurality of digital-to-analog converting circuits, respectively. They produce a driving signal according to the pixel signal and transmit the driving signal to the display panel for displaying. A plurality of voltage booster units are coupled to the plurality of driving units, respectively, and produce a supply voltage according to a control signal. Then the supply voltage is provided to the plurality of driving units. Thereby, by providing the supply voltage to the plurality of driving units of the display panel by means of the plurality of voltage booster units, the area of the external storage capacitor is reduced. Alternative, the external storage capacitor can be even not required.

    Power supply system and display apparatus

    公开(公告)号:US09716429B2

    公开(公告)日:2017-07-25

    申请号:US14819399

    申请日:2015-08-05

    Inventor: Min-Nan Liao

    Abstract: A power supply system includes a charging pump module including a plurality of charging pump circuits, wherein each charging pump circuit includes a plurality of transistor switches and is coupled to a flying capacitor set in parallel and the flying capacitor set includes a plurality of flying capacitor units; and a control module for generating a plurality of control signals to switch a connection relationships of the plurality of flying capacitor units; wherein the plurality of charging pump circuits charges the plurality of flying capacitor units and the connection relationships of the plurality of flying capacitor units determines a generation of a charging voltage; an amplifying module for utilizing the charging voltage as a voltage source to generate an amplifying voltage; and a load module for processing a dynamic charging operation in a predetermined period according to the amplifying voltage, to make the load module achieve a predetermined voltage.

    Power supply system and method
    190.
    发明申请

    公开(公告)号:US20170168517A1

    公开(公告)日:2017-06-15

    申请号:US15256639

    申请日:2016-09-05

    Inventor: Chia-Chi Cheng

    CPC classification number: G05F1/66

    Abstract: A power supply system for a circuit device includes a power supply unit, a switch unit and a voltage detector. The power supply unit, coupled to the circuit device via a power line, is used for supplying basic power for the circuit device via the power line, wherein the power line is coupled to the circuit device via a plurality of nodes. The switch unit, near to a node among the plurality of nodes, is coupled to the circuit device via the power line. The voltage detector, coupled to the circuit device and the switch unit, is used for detecting a voltage of the node and controlling the switch unit to be closed to allow the circuit device to receive auxiliary power via the switch unit when detecting that the voltage of the node is lower than a first threshold value.

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