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公开(公告)号：US20230102348A1
公开(公告)日：2023-03-30
申请号：US16961956
申请日：2020-06-12
Inventor： Haiming CAO , Yanqing GUAN
IPC: G09G3/20
Abstract: A driving circuit and a display panel are disclosed. The driving circuit includes a plurality of cascaded driving units. The driving unit includes a forward/backward scan control module, a first control node controlling module, a second control node controlling module, a global control module, a regulating module, a first output module configured to output a stage signal, and a second output module configured to output a gate driving signal. A voltage level of the gate driving signal is higher than a voltage level of the stage signal.
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公开(公告)号：US20210408072A1
公开(公告)日：2021-12-30
申请号：US16769254
申请日：2020-02-28
Inventor： Juncheng XIAO , Chao TIAN , Yanqing GUAN , Haiming CAO
Abstract: A display panel, a gate electrode driving circuit, and an electronic device are provided. The display panel includes a first metal layer including a first gate electrode; a second metal layer including a first source electrode, a first drain electrode, and a second gate electrode; two ends of a polycrystalline silicon semiconductor layer electrically connected to the first source electrode and the first drain electrode respectively; a third metal layer including a second source electrode and a second drain electrode; and two ends of a metal oxide semiconductor layer electrically connected to the second source electrode and the second drain electrode respectively.
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公开(公告)号：US20200082777A1
公开(公告)日：2020-03-12
申请号：US15747401
申请日：2017-11-30
Inventor： Yanqing GUAN
IPC: G09G3/36
Abstract: A GOA circuit comprises m cascaded GOA units, wherein a nth-stage GOA unit comprises: an output control module, a forward-reverse scan control module, a first pull-down circuit, a second pull-down circuit and a pull-up circuit, the forward-reverse scan control module is used for controlling the GOA circuit to perform a forward scanning or a reverse scanning; the output control module outputs a nth gate driving signal; the first pull-down circuit comprises a seventh TFT; the second pull-down circuit comprises a third TFT, a fourth TFT and a fifth TFT; and the pull-up circuit comprises an eighth TFT and a thirteenth TFT. After power of the liquid crystal display panel is turned off, the fifth TFT is turned off by overlapping of the forward scan control signal and the reverse scan control signal and a first global control signal is high potential.
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公开(公告)号：US20240297174A1
公开(公告)日：2024-09-05
申请号：US17293332
申请日：2021-03-31
Inventor： Xuebin YUAN , Yanqing GUAN , Congxing YANG , Chao TIAN , Fuhsiung TANG
IPC: H01L27/12
CPC classification number: H01L27/124
Abstract: The present application provides an array substrate, a display panel, and a display device. In the present application, a plurality of first-type data lines and a plurality of second-type data lines with data voltages of opposite polarities are provided, and a light-shielding layer of each of first sub-pixels is at least electrically connected to a light-shielding layer of one of second sub-pixels through a connecting line, which can effectively reduce a change in pixel brightness caused by capacitive coupling, and relieve a problem of image flicker.
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公开(公告)号：US20240096908A1
公开(公告)日：2024-03-21
申请号：US17289899
申请日：2021-04-15
Inventor： Fuhsiung TANG , Yanqing GUAN , Congxing YANG
IPC: H01L27/12 , H01L29/786
CPC classification number: H01L27/1244 , H01L29/78633
Abstract: An array substrate is provided. The array substrate includes a substrate, a light-shielding layer, and an active layer. The light-shielding layer is disposed on the substrate, and the active layer is disposed on the light-shielding layer. Wherein, an orthographic projection of the active layer on the substrate is positioned within an orthographic projection of the light-shielding layer on the substrate. The present disclosure prevents the active layer from forming ramps and then breaking by allowing the orthographic projection of the active layer on the substrate to be positioned within the orthographic projection of the light-shielding layer on the substrate, thereby ensuring performances of the array substrate.
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Patent Agency Ranking
公开(公告)号：US20240055535A1
公开(公告)日：2024-02-15
申请号：US17598275
申请日：2021-08-06
Inventor： Hong CHENG , Chao TIAN , Yanqing GUAN , Guanghui LIU
IPC: H01L29/786 , H01L29/423
CPC classification number: H01L29/78696 , H01L29/42384 , G02F1/1368
Abstract: A thin film transistor and a display panel are provided. A first dimension of a first transmission portion electrically connected to a source heavily-doped portion is different from a second dimension of a second transmission portion electrically connected to a drain heavily-doped portion, so that an intensity of an electric field of carriers transmitted by the transmission portion corresponding to the larger one of the first dimension or the second dimension is smaller when the thin film transistor is turned on, thereby reducing the bombardment effect of the carriers on a source or a drain and improving the stability of thin film transistor.
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公开(公告)号：US20240029609A1
公开(公告)日：2024-01-25
申请号：US17441303
申请日：2021-08-06
Inventor： Haiming CAO , Chao TIAN , Yanqing GUAN , Fei AI , Guanghui LIU
IPC: G09G3/20
CPC classification number: G09G3/20 , G09G2310/0267 , G09G2310/08 , G09G2320/045
Abstract: A gate drive circuit and a display panel are provided. A pull-up module and a pull-down module of the gate drive circuit output a constant-voltage high potential to a second node, a third node, and a n-th stage gate drive signal through a P-type thin film transistor and output constant-voltage low potential through a N-type thin film transistor to the second node, the third node, and an n-th gate drive signal, thereby improving the stability of the output signal of the thin film transistor connected to the gate drive circuit and the key node.
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公开(公告)号：US20230309342A1
公开(公告)日：2023-09-28
申请号：US17771484
申请日：2022-04-13
Inventor： Hong CHENG , Yanqing GUAN , Chao TIAN , Fei AI , Guanghui LIU
CPC classification number: H01L27/3262 , G09G3/32 , H01L27/3265 , G09G2300/0426 , G09G2300/0842 , G09G2300/0861 , G09G2320/0233 , G09G2320/0242 , H01L27/1225
Abstract: A display panel, a pixel driving circuit, and a display device are provided. Driving transistors include a first transistor and a second transistor connected in parallel. An absolute value of a threshold voltage of the first transistor is greater than an absolute value of a threshold voltage of the second transistor. A carrier mobility of the first transistor is greater than a carrier mobility of the second transistor. A driving current is affected by characteristics of the second transistor and an increase speed is slowed down, which improves a problem of color unevenness of the display panel at low brightness.
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公开(公告)号：US20210225311A1
公开(公告)日：2021-07-22
申请号：US16302678
申请日：2018-08-16
Inventor： Xin ZHANG , Juncheng XIAO , Chao TIAN , Yanqing GUAN
IPC: G09G3/36
Abstract: A gate driver on array (GOA) circuit, a liquid crystal panel comprising the GOA circuit, and a display device including the liquid crystal panel are provided. The GOA circuit comprises a forward and backward scanning control module configured to control the GOA circuit to perform forward scan or backward scan according to a forward scanning signal or a backward scanning signal respectively, a first voltage stabilizing module configured to maintain a voltage level of a first node, and a second voltage stabilizing module electrically connecting to the forward and backward scanning control module, and configured to maintain a voltage level of an output signal of the forward and backward scanning control module.
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公开(公告)号：US20200226994A1
公开(公告)日：2020-07-16
申请号：US16349625
申请日：2018-10-10
Inventor： Xin ZHANG , Junchen XIAO , Yanqing GUAN , Chao TIAN
IPC: G09G3/36
Abstract: A gate driver of array (GOA) circuit and a display device are disclosed. An n-th sub-circuit in the GOA circuit includes a control module, an output module, a pull-up supplement module, and a leakage switch. The pull-up supplement module includes a supplement switch and an auxiliary switch. The supplement switch is coupled to the auxiliary switch, the control module, and the output module. The auxiliary switch is coupled to the supplement switch, the control module, and the output module. The leakage switch is coupled to the control module, the output module, the supplement switch, and the auxiliary switch.
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