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公开(公告)号：US12181338B2
公开(公告)日：2024-12-31
申请号：US17925214
申请日：2021-12-27
Inventor： Yifan Song , Wenchao Han , Zhaohui Meng , Wei Sun
IPC: G01J1/44 , G01R31/265 , G01J1/42
Abstract: The present disclosure provides a luminous flux test circuitry, a test method and a display panel. The luminous flux test circuitry includes two test sub-circuitries, a control sub-circuitry and a light-shielding pattern. Each test sub-circuitry includes N photosensitive transistors; an output end of each photosensitive transistor in a first test sub-circuitry is coupled to a first input end of the control sub-circuitry; an output end of each photosensitive transistor in a second test sub-circuitry is coupled to a second input end of the control sub-circuitry; the light-shielding pattern covers the photosensitive transistors in the second test sub-circuitry; at a sampling stage, the photosensitive transistors in each test sub-circuitry are in a reverse bias state; and the control sub-circuitry is configured to determine a luminous flux detected by the photosensitive transistors in the first test sub-circuitry in accordance with a leakage current generated by the photosensitive transistors in each test sub-circuitry.
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公开(公告)号：US12013740B2
公开(公告)日：2024-06-18
申请号：US17789172
申请日：2021-09-14
Inventor： Zhaohui Meng , Wei Sun , Lin Cong , Cuilan Huang , Jingpeng Zhao
IPC: G06F1/3234 , G06F1/3231 , G06F1/3296 , G06F3/041
CPC classification number: G06F1/3262 , G06F1/3231 , G06F1/3265 , G06F1/3296 , G06F3/0416
Abstract: Touch display device and power supply control method are provided. The touch display device includes power supply module including: power supply control circuit; power management chip provides touch operation processing circuit, touch display control driver circuit and touch integrated circuit with operating voltage; the touch operation processing circuit provides first control signal to control signal output terminal when the touch display device is in sleep-state, to enable the power supply control circuit to supply power to the power management chip via second power supply terminal under control of the first control signal; and provides second control signal to the control signal output terminal when the touch display device is in the sleep-state and the touch display panel is touched, to enable the power supply control circuit to supply power to the power management chip via first power supply terminal under control of the second control signal.
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公开(公告)号：US20240153423A1
公开(公告)日：2024-05-09
申请号：US17778489
申请日：2021-05-18
Inventor： Lianghao Zhang , Xinle Wang , Yifan Song , Wenchao Han , Zhaohui Meng , Wanzhi Chen , Jing Liu
IPC: G09G3/20
CPC classification number: G09G3/20 , G09G2310/0286 , G09G2310/0297 , G09G2320/0626 , G09G2360/144 , G09G2360/16
Abstract: There is provided a detection circuit, a display panel and a detection method. The detection circuit includes: a conversion circuit configured to acquire a photoelectric sensing signal in real time and convert the acquired photoelectric sensing signal into a luminance value; a storage circuit configured to store N luminance values from the conversion circuit on a first input first output basis; a discrimination circuit connected to the storage circuit and configured to determine whether at least two of the N luminance values meet a preset condition; and an output circuit connected to the discrimination circuit and the storage circuit, and configured to output a preset default luminance value in response to the at least two luminance values meeting the preset condition and output at least one of the N luminance values in response to the at least two luminance values not meeting the preset condition.
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公开(公告)号：US11715401B2
公开(公告)日：2023-08-01
申请号：US16957575
申请日：2019-07-31
Inventor： Zhaohui Meng , Wei Sun , Wenchao Han , Hong Yang , Lin Cong , Wenjun Xiao
IPC: G09G3/20
CPC classification number: G09G3/20 , G09G2310/0254 , G09G2310/0267 , G09G2310/0275 , G09G2310/0286 , G09G2310/08 , G09G2320/02
Abstract: A display panel, a display device and a driving method. The display panel includes a display region and a peripheral region. The display region includes a subpixel unit array having a plurality of rows and a plurality of columns of subpixel units, and the peripheral region includes a gate drive circuit. The display region further includes a plurality of gate lines and a plurality of data lines. Each subpixel unit is driven by a scanning signal provided by one gate and a data signal provided by one data line, and a same data line is connected with at least two subpixel units which are not adjacent to each other and have a same color. The gate drive circuit includes a plurality of shift register units, and the plurality of gate lines are electrically connected with the plurality of shift register units in a one-to-one correspondence in order.
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Patent Agency Ranking
公开(公告)号：US10553153B2
公开(公告)日：2020-02-04
申请号：US15521564
申请日：2016-08-30
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Ying Liu , Chenggeng Zhang , Zhaohui Meng , Hongwei Tian , Juanjuan Bai , Meng Shao , Wen Sun , Can Zheng , Hualing Yang
IPC: G09G3/3233
Abstract: A method, a circuit and a display device for driving an organic light emitting diode, wherein a driving transistor (DTFT) for driving a display element is turned off by jumping one or more of a reference voltage input (Vref), a reset voltage input (Vinit) and a data signal input (Vdata) before beginning to output an EL high level (ELVDD) of a pixel compensation circuit and after beginning to output an EL low level (ELVSS), to overcome the splash screen phenomenon during power-up and direct current-direct current driving failure.
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公开(公告)号：US10068552B2
公开(公告)日：2018-09-04
申请号：US15164185
申请日：2016-05-25
Inventor： Zhaohui Meng , Guangjun Zhang , Zhifu Li , Xue Dong
CPC classification number: G09G5/363 , G09G5/06 , G09G2340/0428 , G09G2360/08 , G09G2370/00 , G09G2370/08
Abstract: Disclosed is a display driving method, an upper machine, a lower machine and a display driving system. The method includes: acquiring, by a lower machine, an address for any of subpixels transmitted from an upper machine; looking up, by the lower machine, a gray scale data corresponding to the pointer address in a display Look-UP Table (LUT), wherein the LUT stores mapping relationships between respective pointer addresses and their corresponding gray scale data; performing, by the lower machine, a digital-analog conversion on the gray scale data to acquire a converted analog voltage; and outputting the analog voltage to the subpixel so as to drive the subpixel for displaying. The method can increase the transmission rate between the GPU and the display to a certain degree and reduce the power consumption thereof.
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公开(公告)号：US20180107330A1
公开(公告)日：2018-04-19
申请号：US15555308
申请日：2017-04-11
Inventor： Zhaohui Meng
IPC: G06F3/041
CPC classification number: G06F3/0416 , G04G21/08 , G06F3/044 , G06F2203/04111
Abstract: The present disclosure discloses a touch screen and a touch positioning method thereof, and a display device. The touch screen comprises: a plurality of mutually insulated fan-shaped first touch sensing electrodes and a plurality of mutually insulated and non-overlapped second touch sensing electrodes mutually insulated from the first touch sensing electrodes. The fan-shaped first touch sensing electrodes are arranged in a circle, and each of the second touch sensing electrodes is shaped like a non-closed ring concentrically arranged with the circle.
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公开(公告)号：US20180063908A1
公开(公告)日：2018-03-01
申请号：US15646277
申请日：2017-07-11
Inventor： Zhaohui Meng
IPC: H05B33/08 , G09G3/34 , G02F1/1335
Abstract: The present disclosure relates to a backlight driving circuit, comprising: a voltage supply configured to supply a first driving voltage; and a voltage regulator configured to receive the first driving voltage supplied by the voltage supply, output the first driving voltage to a light emitting element when an ambient temperature of the light emitting element is lower than a preset threshold, and output a second driving voltage less than the first driving voltage to the light emitting element when the ambient temperature of the light emitting element is higher than the preset threshold.
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39.发明授权公开(公告)号：US09430984B2
公开(公告)日：2016-08-30
申请号：US14498345
申请日：2014-09-26
Inventor： Zhaohui Meng
IPC: G09G3/36
CPC classification number: G09G3/3688 , G09G2310/0251
Abstract: Embodiments of the present invention provide a driving circuit for a display panel which comprises a plurality of pixel units defined by intersected gate lines and data lines and arranged in a matrix form, a driving method of a display panel driving circuit and a display device, relating to the field of display technology. The display panel driving circuit includes pixel charging units, each of which is used for combining voltages outputted from a clock pulse vertical terminal and a data voltage signal terminal to serve as a driving voltage for a data line to increase the charging voltage of pixel units, so that the charging time is shortened, and the capability of driving a display panel load can be enhanced.
Abstract translation: 本发明的实施例提供了一种用于显示面板的驱动电路，其包括由相交的栅极线和数据线限定的多个像素单元，并且以矩阵形式布置，显示面板驱动电路和显示装置的驱动方法， 到显示技术领域。 显示面板驱动电路包括像素充电单元，其各自用于组合从时钟脉冲垂直端子输出的电压和数据电压信号端子，以用作数据线的驱动电压以增加像素单元的充电电压， 使得充电时间缩短，并且可以提高驱动显示面板负载的能力。
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