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公开(公告)号：US20210335231A1
公开(公告)日：2021-10-28
申请号：US16473798
申请日：2018-12-18
发明人： Haigang QING , Yunsheng XIAO
IPC分类号： G09G3/3233 , G09G3/3266 , G09G3/3283 , G09G3/3258
摘要： A pixel circuit, a method of driving a pixel circuit, a display panel and a display device. The pixel circuit includes a light emitting drive circuit, a storage circuit, a data writing circuit, a light emitting control circuit, and a compensation circuit. The data writing circuit is configured to write a data signal into the storage circuit under a control of a scanning signal; the storage circuit is configured to store the data signal; the compensation circuit is configured to write compensation voltage information which is based on a compensation current signal into the light emitting drive circuit under a control of the scanning signal; and the light emitting control circuit is configured to control the light emitting drive circuit to drive a light emitting element to emit light under a control of a light emitting control signal.
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公开(公告)号：US20200265780A1
公开(公告)日：2020-08-20
申请号：US15768899
申请日：2017-09-29
发明人： Haigang QING
IPC分类号： G09G3/3233
摘要： The present disclosure provides a display device, a display panel and a pixel driving circuit. The pixel driving circuit includes a driving transistor, a first scanning terminal, a second scanning terminal, a data input terminal, a light emission control terminal, a storage capacitor, a reset unit, and a write compensation unit and a light emission control unit, wherein the reset unit is turned on according to a first scanning signal from the first scanning terminal to reset the storage capacitor and charge the storage capacitor; and the writing compensation unit is turned on according to a second scanning signal from the second scanning terminal, to cause data signals provided by the data input terminal to be written into a gate electrode of the driving transistor, and to cause the storage capacitor to be discharged through the writing compensation unit and the driving transistor until the driving transistor is turned off.
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公开(公告)号：US20190287461A1
公开(公告)日：2019-09-19
申请号：US16433699
申请日：2019-06-06
发明人： Haigang QING , Xiaojing QI
IPC分类号： G09G3/3233
摘要： Provided are a driving circuit and a driving method thereof, and a display device. The driving circuit includes a signal line, a control line, a driving unit, a power supply unit, a compensation unit, a light emitting control unit, a data writing unit, a storage unit, and an aging alleviation unit, wherein the driving unit is configured to drive a light emitting element; the light emitting control unit is configured to control the light emitting element to emit light; the data writing unit is configured to write the data signal into the storage unit; the compensation unit is configured to perform threshold voltage compensation for the driving unit; and the aging alleviation unit is configured to short-circuit a cathode and an anode of the light emitting element.
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24.发明申请公开(公告)号：US20160372036A1
公开(公告)日：2016-12-22
申请号：US14906011
申请日：2015-06-18
发明人： Haigang QING
IPC分类号： G09G3/3233 , G09G3/3258
CPC分类号： G09G3/3233 , G09G3/325 , G09G3/3258 , G09G2300/0852 , G09G2300/0861 , G09G2310/0251 , G09G2320/0252 , G09G2320/0626
摘要： Provided are a pixel driving circuit, driving method thereof, and a display apparatus. The pixel driving circuit comprises a storage module (1), a light emitting module (2), a driving transistor (TD), and a voltage-adjusting module (3); the storage module (1) is connected to a first control signal terminal (S1), a data current input terminal (1), the driving transistor (TD) and the voltage-adjusting module (3) respectively, and is configured to store a gate-source voltage of the driving transistor (TD) when data current flows through the driving transistor (TD) under the control of a first control signal; the light-emitting module (2) is connected to a second control signal terminal (S2), a power voltage terminal (V1) and the driving transistor (TD) respectively, and is configured to emit light according to the light emitting current (Ioled) in the driving transistor (TD) under the control of a second control signal; the voltage-adjusting module (3) is connected to the second control signal terminal (S2) and the storage module (1) respectively, and is configured to decrease the voltage stored by the storage module (1) under the control of the second control signal to control to reduce the light emitting current (Ioled) in the driving transistor (TD) by a preset scale with respect to the data current (Idata). It is possible to improve display accuracy.
摘要翻译： 提供一种像素驱动电路，其驱动方法和显示装置。 像素驱动电路包括存储模块（1），发光模块（2），驱动晶体管（TD）和电压调节模块（3）。 存储模块（1）分别连接到第一控制信号端子（S1），数据电流输入端子（1），驱动晶体管（TD）和电压调节模块（3），并被配置为存储 当数据电流在第一控制信号的控制下流过驱动晶体管（TD）时，驱动晶体管（TD）的栅源电压; 发光模块（2）分别连接到第二控制信号端子（S2），电源电压端子（V1）和驱动晶体管（TD），并且被配置为根据发光电流发射光（Ioled ）在第二控制信号的控制下在驱动晶体管（TD）中; 电压调节模块（3）分别连接到第二控制信号端子（S2）和存储模块（1），并且被配置为在第二控制的控制下降低由存储模块（1）存储的电压 信号以控制以将驱动晶体管（TD）中的发光电流（Ioled）相对于数据电流（Idata）预设的规模减小。 可以提高显示精度。
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公开(公告)号：US20240331628A1
公开(公告)日：2024-10-03
申请号：US18251069
申请日：2022-05-31
发明人： Ziyang YU , Haijun QIU , Ming HU , Zhiliang JIANG , Haigang QING , Yunsheng XIAO , Tiaomei ZHANG , Miao WANG
IPC分类号： G09G3/3233
CPC分类号： G09G3/3233 , G09G2310/061 , G09G2310/08 , G09G2320/0247
摘要： A pixel circuit includes a data writing sub-circuit, a driving sub-circuit, and one or more potential maintenance sub-circuits. The data writing sub-circuit is coupled to at least a first voltage signal terminal, a data signal terminal, a first scan signal terminal and a first node, and writes a data signal provided by the data signal terminal into the first node under control of at least a first scan signal provided by the first scan signal terminal. The driving sub-circuit is coupled to the first node, a second node and a third node, and creates a path between the second node and the third node under control of a potential at the first node. A potential maintenance sub-circuit is coupled to a circuit node and a reference signal terminal, and maintains a potential at the circuit node through a reference signal provided by the reference signal terminal.
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公开(公告)号：US20240331609A1
公开(公告)日：2024-10-03
申请号：US18740424
申请日：2024-06-11
发明人： Haigang QING , Yunsheng XIAO
IPC分类号： G09G3/20 , G09G3/3266 , G11C19/28 , H10K71/00
CPC分类号： G09G3/2092 , G09G3/3266 , G09G2300/0408 , G09G2300/0426 , G09G2300/0809 , G09G2310/0286 , G09G2310/08 , G11C19/28 , H10K71/00
摘要： A display substrate includes a substrate and a gate driving circuit provided on the substrate; the gate driving circuit includes: a frame start signal line, a clock signal line, an inverted clock signal line, a first level signal line, a second level signal line, and a plurality of shift register units. The plurality of transistors at least include a first transistor, a second transistor, and a third transistor, active layers of the first, second and third transistors are formed by a continuous first semiconductor layer, the first semiconductor layer extends along a first direction; the first semiconductor layer includes at least three channel portions corresponding to the first transistor, the second transistor and the third transistor, and a conductive portion provided between adjacent channel portions, transistors corresponding to the adjacent channel portions are coupled to each other through a corresponding conductive portion.
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公开(公告)号：US20240282238A1
公开(公告)日：2024-08-22
申请号：US18650484
申请日：2024-04-30
发明人： Haigang QING , Ming HU , Haijun QIU
CPC分类号： G09G3/2092 , G09G2310/0286 , G11C19/287
摘要： The present disclosure relates to the field of display, and discloses a shifting register, a driving method, a gate driving circuit and a display device. The shifting register includes: an input sub-circuit, coupled to a signal input terminal, a first clock signal terminal and a first node; a control sub-circuit, coupled to the first clock signal terminal, a second clock signal terminal, the signal input terminal, a first power terminal, a second power terminal and a second node, where the first power terminal or the second power terminal determines a potential of the second node under the control of the first clock signal terminal, the second clock signal terminal and the signal input terminal; and an output sub-circuit, coupled to the first power terminal, the second power terminal, the first node, the second node and a signal output terminal.
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公开(公告)号：US20240233651A1
公开(公告)日：2024-07-11
申请号：US18613731
申请日：2024-03-22
发明人： Pengfei YU , Qiang ZHANG , Tinghua SHANG , Lu BAI , Jie DAI , Chenxing WAN , Haigang QING
IPC分类号： G09G3/3266 , G11C19/28 , H01L21/77 , H01L27/12
CPC分类号： G09G3/3266 , G11C19/28 , G09G2230/00 , G09G2300/0408 , G09G2300/0426 , G09G2310/0286 , G09G2310/061 , H01L21/77 , H01L27/12
摘要： A display substrate and a manufacturing method thereof, and a display device are provided. The display substrate includes a base substrate, and a shift register unit, a first clock signal line, and a second clock signal line in a peripheral region; a first portion and a second portion of a first connection wire of the display substrate are connected to a first gate electrode of a first control transistor of the shift register unit; an orthographic projection of the first portion on the base substrate is on a side of an orthographic projection of an active layer of the first control transistor on the base substrate away from a display region; and an orthographic projection of the second portion on the base substrate is on a side of the orthographic projection of the active layer of the first control transistor on the base substrate close to the display region.
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29.发明公开公开(公告)号：US20240185780A1
公开(公告)日：2024-06-06
申请号：US17796308
申请日：2021-06-25
发明人： Haigang QING
IPC分类号： G09G3/3233
CPC分类号： G09G3/3233 , G09G2300/0426 , G09G2300/0852 , G09G2310/061
摘要： There is provided a pixel driving circuit and method and a display panel. The pixel driving circuit includes a driving circuit, a control circuit, a voltage stabilization circuit, and a first storage circuit. The driving circuit is configured to provide a driving current to a third node according to a signal from a first node. The control circuit is configured to create conduction between second and fourth nodes in response to a signal from a first enable signal terminal, and create conduction between the first power supply terminal and the fourth node in response to the signal from the first enable signal terminal. The voltage stabilization circuit configured to transmit a signal from the reference voltage terminal to the fourth node in response to a signal from the second enable signal terminal. The first storage circuit configured to store electric charges of the first and fourth nodes.
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公开(公告)号：US20240078976A1
公开(公告)日：2024-03-07
申请号：US18273788
申请日：2022-07-29
发明人： Tianyi CHENG , Haigang QING , Hongda CUI , Sifei AI , Guowei ZHAO , Yang YU , Li WANG , Baoyun WU
IPC分类号： G09G3/3233
CPC分类号： G09G3/3233 , G09G2310/061 , G09G2310/08
摘要： Disclosed is a pixel circuit arranged in a display substrate, which comprises a first driving mode and a second driving mode. Content displayed in the display substrate comprises multiple display frames. In the first driving mode and the second driving mode, the display frames comprise refresh frames. A signal of a second scanning line is the same as that of a third scanning line. The time of which the signal of the second scanning line is an active level signal comprises a first refresh time period, a second refresh time period and a third refresh time period, which sequentially occur at intervals. During the second refresh time period, a signal of a first scanning line is an inactive level signal. The voltage of a signal at a reset voltage end is a positive voltage, and the voltage of a signal at a first initial voltage end is a negative voltage.
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