Reference Voltage Generating Circuit

    公开(公告)号:US20210034083A1

    公开(公告)日:2021-02-04

    申请号:US16876137

    申请日:2020-05-18

    Abstract: The present invention provides a reference voltage generating circuit. The reference voltage generating circuit includes a charge supply circuit providing a first reference voltage during a first period; and a voltage supply circuit providing a second reference voltage during a second period. The voltage supply circuit does not provide the second reference voltage during the first period.

    Backlight device
    173.
    发明授权

    公开(公告)号:US10754155B2

    公开(公告)日:2020-08-25

    申请号:US16477703

    申请日:2018-01-15

    Inventor: Chuan-Pin Hsiung

    Abstract: The present invention provides a backlight device, which comprises a plurality of optical devices and a plurality of backlight plates. The plurality of backlight plates include light sources, respectively, and are disposed at the light inlets of the plurality of optical devices. Then the beams of the light sources can be incident to the plurality of optical devices through the light inlets and reflected to the light outlets of the plurality of optical devices to form a backlight source for a display panel. The plurality of optical devices extend from the light outlets beyond the opposite surface of the display panel. By distributing optical paths, the spaces required for the optical paths can be reduced.

    Power supply module of driving device in display system, related driving device and power supply method

    公开(公告)号:US10679570B2

    公开(公告)日:2020-06-09

    申请号:US15206304

    申请日:2016-07-10

    Abstract: A power supply module for a driving device of a display system includes a source power unit, for outputting a source high voltage only in a first period and outputting a source low voltage only in a second period according to a power control signal, wherein the source high voltage and the source low voltage are utilized for generating a plurality of data signals of a plurality of pixels in the display system; and a bias power unit, for generating a common voltage, wherein the common voltage is between the source high voltage and the source low voltage; wherein the first period does not overlap the second period.

    Driving method and system for liquid crystal display

    公开(公告)号:US10152933B2

    公开(公告)日:2018-12-11

    申请号:US15049134

    申请日:2016-02-21

    Abstract: A driving method used in a liquid crystal display (LCD) is used for preventing or mitigating an image sticking occurring on a screen of the LCD. The driving method includes driving a data line outputted to a liquid crystal capacitor on the screen with a first voltage signal; and driving a reference voltage line outputted to the liquid crystal capacitor with a second voltage signal; wherein the second voltage signal and the first voltage signal have inverse voltage polarities.

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

    公开(公告)号:US09953608B2

    公开(公告)日:2018-04-24

    申请号:US14133978

    申请日:2013-12-19

    CPC classification number: G09G3/3696 G09G2310/027 G09G2310/0289 Y10T29/4913

    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.

    Area-saving driving circuit for display panel

    公开(公告)号:US09898992B2

    公开(公告)日:2018-02-20

    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.

    Calibration method and capacitive sensing device

    公开(公告)号:US09864467B2

    公开(公告)日:2018-01-09

    申请号:US15054143

    申请日:2016-02-26

    CPC classification number: G06F3/0418 G06F3/044

    Abstract: A calibration method for a capacitive sensing device is disclosed. The capacitive sensing device is capable of operating in a self-sensing mode or a mutual-sensing mode. The calibration method includes detecting a capacitance change of a panel in the self-sensing mode to generate a self-sensing output signal, detecting a capacitance change of the panel in the mutual-sensing mode to generate a mutual-sensing output signal, calculating a self-sensing difference between the self-sensing output signal and a self-sensing static parameter, and calibrating the mutual-sensing output signal according to the mutual-sensing output signal and the self-sensing difference.

    Driving circuit for driving color display to display black-and-white/grayscale images and data conversion circuit thereof

    公开(公告)号:US09761198B2

    公开(公告)日:2017-09-12

    申请号:US14632051

    申请日:2015-02-26

    CPC classification number: G09G5/02 G09G5/10 G09G5/18 G09G2340/0428 G09G2340/08

    Abstract: The present invention provides a driving circuit for driving a color display to display black-and-white/grayscale images and comprises a data conversion circuit and a driver. The data conversion circuit receives input data transmitted by a microprocessor. The format of the input data is a black-and-white/grayscale format. The data conversion circuit converts the input data for producing output data. The format of the output data is a color format. The driver receives the output data and drives the color display to display the black-and-white/grayscale image. The driving circuit will convert the input data transmitted by the microprocessor with limited transmission capability and produce color output data for driving the color display to display the black-and-white/grayscale image. Accordingly, by using the driving circuit according to the present invention, an electronic device with limited transmission capability can work with the color display to display black-and-white/grayscale images.

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