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公开(公告)号：US10446105B2
公开(公告)日：2019-10-15
申请号：US15744787
申请日：2017-11-30
Inventor： Zhenzhou Xing , Qingcheng Zuo
IPC: G09G3/36 , G02F1/1362 , G02F1/1368 , G02F1/1343 , H01L27/12
Abstract: Embodiments provide a thin film transistor liquid crystal display panel comprising: data lines for transmitting data signals; scan lines being crossly arranged with the data lines to define pixel regions, pixel electrodes being disposed in the pixel regions, and a first and a second feed through voltage being voltage drops generated on the pixel electrodes, respectively; common electrodes comprising a first common electrode and a second common electrode, a first common voltage being a voltage on the first common electrode, a second common voltage being a voltage on the second common electrode, the first common electrode being arranged above the pixel electrode on which the first feed through voltage is generated for compensating the voltage reduction caused by the first feed through voltage, and the second common electrode being arranged above the pixel electrode on which the second feed through voltage is generated for compensating the voltage reduction caused by the second feed through voltage.
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公开(公告)号：US20180314119A1
公开(公告)日：2018-11-01
申请号：US15565745
申请日：2017-05-03
Inventor： Qingcheng Zuo , Xiaoling Yuan
IPC: G02F1/1362 , G09G3/00 , G09G3/36 , G02F1/1345
CPC classification number: G02F1/136204 , G02F1/1345 , G02F1/13452 , G02F1/13454 , G02F1/136286 , G02F2001/136254 , G09G3/006 , G09G3/3688 , G09G2300/0426 , G09G2330/04 , G09G2330/12
Abstract: This disclosure provides a liquid crystal display panel where a display area is divided into a plurality of areas to arrange driver chip, fan-out line, multiplexer line, detection circuit and protection circuit. A detection circuit and a protection circuit are disposed in a same area, making the protection circuit share thin-film transistors with the detection circuit.
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公开(公告)号：US10115352B2
公开(公告)日：2018-10-30
申请号：US14905820
申请日：2015-12-30
Inventor： Zhenzhou Xing , Qingcheng Zuo
Abstract: The present disclosure provides a backlight driving circuit, which includes a backlight source, an image collecting circuit, a comparing circuit, a PWM generating circuit, a PFM generating circuit, a driving circuit and a backlight driving circuit, the image collecting circuit outputs a grayscale value of a current frame to the driving circuit; the driving circuit transmits a grayscale variation value to the comparing circuit; the comparing circuit outputs a control signal for the PWM generating circuit or a control signal for the PFM generating circuit; the PWM generating circuit generates a PWM signal or the PFM generating circuit generates a PFM signal and outputs it to the backlight driving circuit; the backlight driving circuit changes a current of the backlight source for dimming. This circuit may decrease the whole energy loss of the backlight adjusting process and increase the working efficiency of the circuit.
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公开(公告)号：US09892690B2
公开(公告)日：2018-02-13
申请号：US15007603
申请日：2016-01-27
Inventor： Qingcheng Zuo
CPC classification number: G09G3/3406 , G09G3/3648 , G09G2310/0237 , G09G2320/0214 , G09G2320/0233 , G09G2320/0261 , G09G2320/064 , G09G2320/0646
Abstract: The disclosure shows a control circuit for backlight, a control method and a liquid crystal display device. The control circuit includes a display driving chip used to generate a video frame data enable signal and a first PWM signal; a pulse width modulation control circuit for receiving the video frame data enable signal and the first PWM signal, and modulating a duty ratio of the first PWM signal under the video frame data enable signal control to get a second PWM signal; a backlight driving chip for receiving the second PWM signal, and controlling brightness of the backlight based on the second PWM signal to increase brightness of the backlight during a frame data disable period of the video frame data enable signal. Decreasing brightness in liquid crystal display device caused by leakage characteristic of thin film transistor is solved through the disclosure to achieve consistent brightness.
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公开(公告)号：US10777157B2
公开(公告)日：2020-09-15
申请号：US16208489
申请日：2018-12-03
Inventor： Qingcheng Zuo
IPC: G09G3/36 , G02F1/1362
Abstract: The present disclosure provides a pixel substrate, a liquid crystal display panel and liquid crystal display device, the pixel substrate includes liquid crystal pixels, TFT, source lines, grid lines, common electrodes, and corresponding storage capacitances, the liquid crystal pixels include a plurality of pixel units, each of the source lines is connected to the source/drain electrode of at least two columns of the pixel units, and the storage capacitance corresponding to one column of the pixel units is larger than the storage capacitance corresponding to any other column of the pixel units. The present disclosure reduces the effect of the feed-through voltage on the display effect while reducing the power consumption.
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Patent Agency Ranking
公开(公告)号：US10739914B1
公开(公告)日：2020-08-11
申请号：US16331986
申请日：2018-09-04
Inventor： Qingcheng Zuo , Xiaoling Yuan
IPC: G06F3/041 , G02F1/1333 , G06F3/044
Abstract: The present disclosure provides a touch sensing method, including receiving a touch sensing signal of a touch sensing panel; determining a type of a touch sensing operation according to the touch sensing signal and generating a determining result; determining a position of a non-fingerprint touch sensing operation according to a position generated using the touch sensing signal when the determining result indicates that the type of the touch sensing operation is not a fingerprint touch sensing operation; and suspending processing of the touch sensing signal generated of a portion of the touch sensing panel corresponding to the position of the non-fingerprint touch sensing operation.
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公开(公告)号：US10324548B2
公开(公告)日：2019-06-18
申请号：US15117846
申请日：2016-07-11
Inventor： Gonghua Zou , Qingcheng Zuo
Abstract: The present application discloses a mobile terminal, and its touch display device, and a touch button, the touch button including a touch sensor, a first switch group and a second switch group; each switch group including a plurality of switches, terminals of the switches of the first switch group are respectively connected to the touch panel, the other terminals are connected to the touch sensor respectively; terminals of the switches of the second switch group are respectively connected to the touch sensor, the other terminals are connected to the liquid crystal module; the touch sensor is overlapped with the touch button area of the touch display device. By adding the switches and the switching control signal of the touch button performing multiplexing to the Cell test PAD, and use the cell test PAD as the sensor of the extension region, and further integrate the additional Touch function into the Cell.
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公开(公告)号：US10304401B2
公开(公告)日：2019-05-28
申请号：US15516898
申请日：2017-03-15
Inventor： Qingcheng Zuo , Man Li , Xiaoling Yuan
IPC: G09G3/36
Abstract: The present invention provides a display driving circuit and a liquid crystal display panel with adding a first AND gate (AND1), a second AND gate (AND2) and a third AND gate (AND3). Two input ends of each of the three gates receives a branch control signal and a conditioning signal (BURR), and the conditioning signal (BURR) first performs several high and low voltage level conversions and then maintains the high voltage level, respectively in the high voltage level durations of the respective branch control signals to make the signal outputted by the output end of the first AND gate, the signal outputted by the output end of the second AND gate and the signal outputted by the output end of the third AND gate first perform several high and low voltage level conversions and then maintain the high voltage level.
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公开(公告)号：US10115353B2
公开(公告)日：2018-10-30
申请号：US14915236
申请日：2016-01-14
Inventor： Zhenzhou Xing , Qingcheng Zuo , Xingling Guo
Abstract: The present invention provides a liquid crystal display device, comprising a backlight part, and the liquid crystal display device includes an image collection circuit, a gray scale judgment circuit, a PWM signal generation circuit and a LED driving circuit, and the backlight part is electrically coupled to the LED driving circuit; the image collection circuit obtains a gray scale of a target image and transmits the gray scale of the target image to the gray scale judgment circuit, and the gray scale judgment circuit compares the gray scale of the target image with a preset gray scale threshold to generate a control signal to be transmitted to the PWM signal generation circuit; the PWM signal generation circuit generates a PWM signal of which a duty ratio is zero to be transmitted to the LED driving circuit, and the LED driving circuit cuts off an input current of the backlight part.
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公开(公告)号：US10748495B2
公开(公告)日：2020-08-18
申请号：US16074453
申请日：2018-04-27
Inventor： Qingcheng Zuo
IPC: G09G3/36 , G02F1/1362 , G02F1/133 , G02F1/1368
Abstract: A pixel driving circuit is used to drive a pixel structure having a plurality of pixel units. The pixel driving circuit includes data lines; selecting circuits having a data input terminal connected to one of the data lines, a first output terminal connected to a red subpixel unit of a pixel unit, a second output terminal connected to a green subpixel unit of the pixel unit, and a third output terminal connected to a blue subpixel unit of the pixel unit; scanning lines; voltage-variation circuits having an input terminal to receive the scanning signal, an output terminal connected to one of scanning lines. Each of the voltage-variation circuits is selectively operable in a voltage-regulated state or a conduct state.
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