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公开(公告)号：US11113496B1
公开(公告)日：2021-09-07
申请号：US16960568
申请日：2020-06-03
Inventor： Yongxiang Zhou , Yanqing Guan , Chao Tian
Abstract: The present application provides a fingerprint recognition driving circuit, comprising: a cascade signal line; and a plurality of driving regions, wherein each of the driving regions is provided with a cascade unit and a plurality of first GOA driving units, each of the cascade units is connected to the cascade signal line to turn on the first GOA driving unit of a first stage in a corresponding driving region according to a cascade signal, and each of the cascade units is also configured to output an ON signal to the cascade unit of a next stage to turn on the cascade unit of the next stage.
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公开(公告)号：US10930193B2
公开(公告)日：2021-02-23
申请号：US16612146
申请日：2019-03-20
Inventor： Xin Zhang , Juncheng Xiao , Chao Tian , Yanqing Guan
IPC: G09G3/20
Abstract: A method, a device, and an electronic apparatus for scan signal generation are provided. The method includes acquiring an initial clock signal, processing the initial clock signal to generate a plurality of target clock signals, encoding the plurality of target clock signals according to a predetermined logic relationship to generate a plurality of ordered logic signals, decoding the plurality of ordered logic signals, and generating a plurality of scan signals according to a decoding result.
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公开(公告)号：US10515602B1
公开(公告)日：2019-12-24
申请号：US15740742
申请日：2017-11-29
Inventor： Yanqing Guan
IPC: G09G3/36
Abstract: The present invention provides a GOA circuit, which includes, which includes multi-stage GOA circuit repeat unit that are cascade connected, and each stage of the GOA circuit repeat units includes: a first pull-up control module (101), a first pull-down holding module (102), a first pull-down module (106), a first bootstrap capacitor module (103), a first output module (104), a second output module (105), a second pull-up control module (201), a second pull-down holding module (202), a second pull-down module (206), a second bootstrap capacitor module (203), a third output module (204) and a fourth output module (205). The present invention can reduce the number of thin film transistors (TFTs) in the GOA circuit for realizing a narrow-border design as well as reducing power consumption of the GOA circuit.
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公开(公告)号：US12283227B2
公开(公告)日：2025-04-22
申请号：US18247256
申请日：2023-02-08
Inventor： Chao Tian , Mingyue Li , Yanqing Guan , Haiming Cao , Fei Ai , Guanghui Liu
IPC: G09G3/32
Abstract: An embodiment of the present disclosure is directed to a display panel. The display panel includes a plurality of scan lines and a plurality of forward and reverse scan pull-down circuit. The plurality of scan lines is located on the display area. Each of the forward and reverse scan pull-down circuits includes a forward scan control module, a reverse scan control module, and a pull-down module located on a display area. The pull-down module includes an output terminal and a control terminal coupled to an output terminal of the forward scan control module and an output terminal of the reverse scan control module.
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公开(公告)号：US12136396B2
公开(公告)日：2024-11-05
申请号：US17430058
申请日：2021-06-08
Inventor： Chao Tian , Yanqing Guan , Guanghui Liu , Fei Ai
IPC: G09G3/3266 , G09G3/20 , G09G3/36
Abstract: The present application provides a display panel and a display device. An N-th auxiliary unit is arranged in a display area of the display panel. An output end of the N-th auxiliary unit is connected to an N-th scan line. By connecting the auxiliary unit arranged in the display area to the corresponding scan line, a falling edge of a scan signal transmitted in the scan line can have sharp falling or a rising edge of the scan signal can have sharp rising, which can alleviate a signal distortion problem caused by transmission delay in the display area.
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Patent Agency Ranking
公开(公告)号：US12020614B2
公开(公告)日：2024-06-25
申请号：US17441303
申请日：2021-08-06
Inventor： Haiming Cao , Chao Tian , Yanqing Guan , Fei Ai , Guanghui Liu
IPC: G09G3/3266 , 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：US11996062B2
公开(公告)日：2024-05-28
申请号：US17419876
申请日：2021-05-31
Inventor： Yanqing Guan , Chao Tian , Haiming Cao
IPC: G09G3/36
CPC classification number: G09G3/3677 , G09G2300/0876
Abstract: A display panel and a gate driving circuit are provided. The gate driving circuit utilizes the pull-down control module to periodically pull up and pull down the voltage level of the second node. The voltage level of the second node is periodically a high voltage level. This effectively reduces the time duration when the second node corresponds to the high voltage level. After the TFTs electrically connected to the second node are forward biased, the TFTs could have sufficient recovery time. This solution effectively improves the bias condition of the TFTs in the pull-down control module and thus makes the circuit more stable and raises the reliability of the circuit.
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公开(公告)号：US11961490B2
公开(公告)日：2024-04-16
申请号：US16971483
申请日：2020-07-21
Inventor： Chao Tian , Yanqing Guan
IPC: G09G3/36
CPC classification number: G09G3/3677 , G09G2310/0283 , G09G2310/0289 , G09G2310/08 , G09G2320/0214
Abstract: Disclosed is a driving circuit, a display panel and a display device. The driving circuit includes a plurality of cascaded driving units, where a first staged driving unit includes a forward and backward scan control module, a node signal control module, an output control module, a first voltage stabilizing module, a first pull-down module, a second pull-down module and an electrical leakage control module. The electrical leakage control module is configured to maintain a voltage level of an output signal of the forward and backward scan control module.
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公开(公告)号：US11747691B2
公开(公告)日：2023-09-05
申请号：US17281935
申请日：2021-01-29
Inventor： Fuhsiung Tang , Yanqing Guan , Congxing Yang
IPC: G02F1/1368 , G02F1/1362 , G09G3/36
CPC classification number: G02F1/1368 , G02F1/136286 , G09G3/3677
Abstract: A display panel and a display device are disclosed. The display panel includes a transistor disposed in the non-display area. The transistor includes a charge inducing layer, and a first insulating layer, an active layer, a second insulating layer, and a gate electrode all disposed on the charge inducing layer, so that the actively layer, the gate electrode, and the charge inducing layer collectively form a capacitance system, which benefits extending of the conduction time of the transistor, thereby giving a boost to an increase in a charging rate of the data line, and ensuring a smooth display of the display panel.
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公开(公告)号：US11257456B2
公开(公告)日：2022-02-22
申请号：US16970642
申请日：2020-06-24
Inventor： Haiming Cao , Yanqing Guan
IPC: G09G3/36
Abstract: In a pixel driving circuit and a display panel provided, a first transistor or a second transistor is controlled to maintain that the first transistor or the second transistor is normally turned on. The one of the transistors that is normally turned on is coupled to a common terminal. The other of the transistors serves as a driving switch that receives a row scan signal and a data signal to charge a liquid crystal capacitor and a storage capacitor. Thus, when the pixel driving circuit is in the low-frequency state or the high-frequency state, the first transistor and the second transistor can alternately operate to satisfy different operating requirements.
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