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    Driving methods and driving devices of display panels
    12.
    发明授权
    Driving methods and driving devices of display panels 有权

    公开(公告)号：US10204568B2

    公开(公告)日：2019-02-12

    申请号：US15325810

    申请日：2017-01-07

    Applicant: Wuhan China Star Optoelectronics Technology Co., Ltd.

    Inventor： Xingling Guo ,  Xiaoping Tan ,  Jiehui Qin

    IPC: G09G3/34 ,  H04N9/31 ,  G09G3/20 ,  G09G5/02 ,  G09G3/36

    Abstract: The present disclosure relates to a driving method and a driving device of display panels. The driving method includes: obtaining three-color sub-pixel data of each of pixels of a current image; obtaining a saturation value and a Chroma value corresponding to each of the pixels; determining if the saturation value corresponding to each of the pixels is within a predetermined range; obtaining a white-grayscale-added value in accordance with the Chroma value corresponding to the pixel, adopting the white-grayscale-added value as a white grayscale value of the four-color sub-pixel data corresponding to the pixel, and outputting the white grayscale value to the display panel upon determining the saturation value corresponding to the pixel is within the predetermined range. In this way, the brightness of the pure-color image displayed on the display panel may be enhanced, and there is no darker issue when the pure-color image is displayed.

    Mutual capacitive in-cell display device and the driving method thereof
    13.
    发明授权
    Mutual capacitive in-cell display device and the driving method thereof 有权

    公开(公告)号：US10152155B2

    公开(公告)日：2018-12-11

    申请号：US15118830

    申请日：2016-07-12

    Applicant: Wuhan China Star Optoelectronics Technology Co. Ltd.

    Inventor： Man Li ,  Feilin Ji ,  Xiaoping Tan

    IPC: G06F3/041 ,  G06F3/044 ,  G09G3/36 ,  G02F1/1368 ,  G02F1/1362 ,  G02F1/1333

    Abstract: The present disclosure discloses a mutual capacitive in-cell display device and the driving method thereof. The mutual capacitive in-cell display device comprises: a first substrate; a touch panel, which is provided on the first substrate; a driver integrated circuit, which is used to send a first enable signal and a second enable signal; multiple gate lines, each gate line comprising a first switching transistor, the control terminal of the first switching transistor being connected to the driver integrated circuit; multiple data lines, each data line comprising a second switching transistor, the control terminal of the second switching transistor being connected to the driver integrated circuit. When the first switching transistor is turned on in responses to the first enable signal and the second switching transistor is turned on in response to the second enable signal in standby mode, the multiple data lines are connected to the touch panel to discharge.

    Gamma voltage generation circuit and drive apparatus
    14.
    发明授权
    Gamma voltage generation circuit and drive apparatus 有权

    公开(公告)号：US10083663B2

    公开(公告)日：2018-09-25

    申请号：US15126501

    申请日：2016-08-10

    Applicant: Wuhan China Star Optoelectronics Technology Co., Ltd.

    Inventor： Xingling Guo ,  Wei Chen ,  Xiaoping Tan

    IPC: G09G3/36

    CPC classification number: G09G3/3607 ,  G09G3/36 ,  G09G3/3688 ,  G09G3/3696 ,  G09G2300/0452 ,  G09G2310/027 ,  G09G2320/0276 ,  G09G2320/0673 ,  G09G2360/16

    Abstract: The present application discloses a gamma voltage generating circuit, including an image detection module, a control module and a gamma voltage module; the image detection module is for acquiring an image input signal, and detecting the image input signal, when determining the gray scale indicated by the image input signal comprising a pure color gray scale, to generate and output a first detection result signal for indicating the pure color gray scale; the control module is electrically connected to the image detection module, for receiving the first detection result signal output from the image detection module and generating and outputting a first control signal in accordance with the first detection result signal; and the gamma voltage module is electrically connected to the control module to receive the first control signal output from the control module, and generate a gamma reference voltage in accordance with the first control signal.

    Voltage conversion circuit and liquid crystal display driving chip
    15.
    发明授权
    Voltage conversion circuit and liquid crystal display driving chip 有权

    公开(公告)号：US10050523B1

    公开(公告)日：2018-08-14

    申请号：US15125575

    申请日：2016-07-29

    Applicant: Wuhan China Star Optoelectronics Technology Co., Ltd.

    Inventor： Feilin Ji ,  Xiaoping Tan

    IPC: H02M3/07 ,  G09G3/36

    Abstract: The embodiment of the present disclosure provides a voltage conversion circuit including a voltage conversion module and a control module, the voltage conversion module includes a input terminal, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a first switch to thirteenth switch and a output terminal, the input terminal is used to connect the input power, the control module is connected with the voltage conversion module, the voltage conversion module is used to convert the voltage of the input power to different magnifications output voltage and output from the output terminal when the first capacitor, the second capacitor, the third capacitor and the fourth capacitor are charging and discharging. Further, the embodiment of the present disclosure further provides a liquid crystal display driving chip applied the voltage conversion circuit. The voltage conversion circuit may achieve multi-magnification voltage output, and improve the conversion efficiency of the voltage.

    Driving methods and driving devices of display panels
    18.
    发明授权
    Driving methods and driving devices of display panels 有权

    公开(公告)号：US10347210B2

    公开(公告)日：2019-07-09

    申请号：US15325081

    申请日：2017-01-07

    Applicant: Wuhan China Star Optoelectronics Technology Co., Ltd.

    Inventor： Xingling Guo ,  Chun-Hung Huang ,  Xiaoping Tan ,  Jiehui Qin

    IPC: G09G5/02 ,  G09G5/10 ,  G09G3/34 ,  G09G3/36

    Abstract: The present disclosure relates to a driving method and a driving device of display panels. The driving method includes: dividing a saturation interval of an original image frame to be displayed by a display panel into a plurality of sub-saturation intervals; obtaining saturation values corresponding to each of the pixels in the original image frame; calculating numbers of pixels in the original image frame falling within each of the sub-saturation intervals in accordance with the saturation values corresponding to each of the pixels. In this way, the backlight brightness outputted by the backlight module may be adjusted in accordance with the saturation values of the original image frame so as to enhance the low brightness issue when a pure-color image is displayed by the display panel configured with RGBW sub-pixels.

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