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公开(公告)号:US20230351940A1
公开(公告)日:2023-11-02
申请号:US18344897
申请日:2023-06-30
Applicant: Xiamen Tianma Micro-Electronics Co., Ltd.
Inventor: Qingjun LAI , Yihua ZHU , Yong YUAN
IPC: G09G3/20
CPC classification number: G09G3/2092 , G09G2310/0286 , G09G2310/08 , G11C19/28
Abstract: Provided are a display panel and a display device. The display panel includes a driver circuit including N stages of cascaded shift registers, where N≥2. A shift register includes a first control part and a second control part. The second control part includes a first control unit and a second control unit. The first control unit comprises a first gating unit. One terminal of the first gating unit is connected to a preset node, another terminal of the first gating unit is connected to a fourth node, and a control terminal of the first gating unit is configured to receive a fifth voltage signal. The second control unit is configured to receive at least a third voltage signal and a signal of the fourth node or receive at least a fourth voltage signal and a signal of a fifth node and generate an output signal.
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公开(公告)号:US20230290289A1
公开(公告)日:2023-09-14
申请号:US18198112
申请日:2023-05-16
Applicant: Xiamen Tianma Micro-Electronics Co.,Ltd.
Inventor: Qingjun LAI , Yihua ZHU , Yong YUAN , Ping AN , Zhaokeng CAO
CPC classification number: G09G3/20 , G11C19/28 , G09G2300/0819 , G09G2300/0842 , G09G2310/0286
Abstract: A display panel includes a driving circuit. The driving circuit includes N levels of shift registers cascaded with each other, N≥2. A shift register of the N levels of the shift registers includes a third control unit and a fourth control unit. The third control unit is configured to receive the first voltage signal and a second voltage signal and control a signal of a fourth node in response to the signal of the second node and a signal of a third node. The first voltage signal is a high-level signal and the second voltage signal is a low-level signal. The fourth control unit is configured to receive a third voltage signal and a fourth voltage signal and generate an output signal in response to the signal of the first node and the signal of the fourth node and includes a first transistor and a second transistor.
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公开(公告)号:US20220327980A1
公开(公告)日:2022-10-13
申请号:US17855139
申请日:2022-06-30
Applicant: Xiamen Tianma Micro-Electronics Co., Ltd.
Inventor: Qingjun LAI , Yihua ZHU
IPC: G09G3/20
Abstract: A display panel and a display device are provided. The display panel includes a driving circuit and the driving circuit includes N-level shift registers cascaded with each other, where N is greater than or equal to two. A shift register of the N-level shift registers includes: a third control unit, configured to control a signal of a fourth node, the third control unit receives a first voltage signal and a second voltage signal, the first voltage signal is a high-level signal, and the second voltage signal is a low-level signal; and a fourth control unit, configured to generate an output signal, the fourth control unit receives a third voltage signal and a fourth voltage signal. The display panel further includes a pixel circuit, the pixel circuit includes a driving transistor, the driving circuit provides a first driving signal.
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公开(公告)号:US20220215791A1
公开(公告)日:2022-07-07
申请号:US17212323
申请日:2021-03-25
Applicant: Xiamen Tianma Micro-Electronics Co.,Ltd.
Inventor: Qingjun LAI , Yihua ZHU , Shaorong YU
IPC: G09G3/20
Abstract: The present disclosure provides a shift register and a driving method thereof, a scan driving circuit, a display panel, and a display device. The shift register includes an input module; a control module; a reset module; a first output module; a second output module; and a stabilization module, that a phase of a signal output from the second output module lags behind a phase of a signal output from the first output module, and does not overlap with the phase of the signal output from the first output module.
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公开(公告)号:US20220208051A1
公开(公告)日:2022-06-30
申请号:US17451126
申请日:2021-10-15
Applicant: Xiamen Tianma Micro-Electronics Co.,Ltd.
Inventor: Qingjun LAI , Yihua ZHU , Ping AN
Abstract: A display panel and a display device are provided. The display panel includes a driving circuit. The driving circuit includes N-level shift registers cascaded with each other, where N is greater than or equal to two. A shift register includes: a first control unit configured to receive an input signal and control a signal of a first node; a second control unit configured to receive a first voltage signal and control a signal of a second node; a third control unit configured to receive the first voltage signal and generate an output signal, or receive a second voltage signal and generate an output signal in response to a signal of a third node connected to the first node; and a fourth control unit configured to receive the second voltage signal and control the signal of the first node. The first and second voltage signals are high-level and low-level signals, respectively.
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公开(公告)号:US20240063226A1
公开(公告)日:2024-02-22
申请号:US18384593
申请日:2023-10-27
Applicant: Xiamen Tianma Micro-Electronics Co., Ltd.
Inventor: Qingjun LAI , Yihua ZHU , Yong YUAN , Ping AN , Zhaokeng CAO
CPC classification number: H01L27/1225 , G11C19/28 , G09G2310/0286
Abstract: A display panel includes at least one driving circuit and at least one pixel circuit. A driving circuit of the at least one driving circuit provides a driving signal for a pixel circuit of the at least one pixel circuit. The driving circuit includes N-level shift registers cascaded with each other. N is greater than or equal to two. The pixel circuit provides a display signal for a display unit of the display panel. A shift register of the N-level shift registers includes at least one first transistor. The at least one first transistor includes at least one first active layer, and an active layer with a largest area among the at least one first active layer is a first preset active layer. The pixel circuit includes at least one second transistor. The at least one second transistor includes at least one second active layer.
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公开(公告)号:US20240055437A1
公开(公告)日:2024-02-15
申请号:US18384565
申请日:2023-10-27
Applicant: Xiamen Tianma Micro-Electronics Co., Ltd.
Inventor: Qingjun LAI , Yihua ZHU , Yong YUAN , Ping AN , Zhaokeng CAO
IPC: H01L27/12 , G09G3/3225
CPC classification number: H01L27/1237 , H01L27/1251 , G09G3/3225 , G09G2300/0426 , G09G2300/0842 , G09G2300/0465 , G09G2300/0814 , H01L27/1225 , H10K59/1213
Abstract: A display panel includes a base substrate, a first transistor, and a second transistor. The first transistor and the second transistor are formed on the base substrate. The first transistor includes a first active layer, a first gate electrode, a first source electrode, and a first drain electrode. The first active layer includes silicon. The second transistor includes a second active layer, a second gate electrode, a second source electrode, and a second drain electrode. The second active layer includes oxide semiconductor. A length of a channel region of the first transistor is L1. Along a direction perpendicular to the base substrate, a distance between the first gate electrode and the first active layer is D1. A length of a channel region of the second transistor is L2. Along the direction perpendicular to the base substrate, a distance between the second gate electrode and the second active layer is D2.
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公开(公告)号:US20230282145A1
公开(公告)日:2023-09-07
申请号:US18198013
申请日:2023-05-16
Applicant: Xiamen Tianma Micro-Electronics Co.,Ltd.
Inventor: Qingjun LAI , Yihua ZHU , Yong YUAN , Ping AN , Zhaokeng CAO
CPC classification number: G09G3/20 , G11C19/28 , G09G2300/0842 , G09G2300/0819 , G09G2310/061 , G09G2310/0286
Abstract: A display panel includes a pixel circuit and a driving circuit. The pixel circuit includes a driving transistor. The driving circuit is configured to provide a signal for the pixel circuit, receive a third voltage signal and a fourth voltage signal, and generate an output signal. The third voltage signal is a high-level signal, and the fourth voltage signal is a low-level signal. A working process of the pixel circuit includes a reset phase and a bias phase. The output signal of the driving circuit is a reset signal in the reset phase. The output signal of the driving circuit is a bias signal in the bias phase. In response to the driving transistor being a PMOS transistor, the reset signal is the fourth voltage signal, and the bias signal is the third voltage signal.
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公开(公告)号:US20230215369A1
公开(公告)日:2023-07-06
申请号:US18182216
申请日:2023-03-10
Applicant: Xiamen Tianma Micro-Electronics Co., Ltd.
Inventor: Qingjun LAI , Yihua ZHU , Jinjin YANG , Ping AN
IPC: G09G3/3233 , G09G3/3266
CPC classification number: G09G3/3233 , G09G3/3266 , G09G2310/061 , G09G2320/0233 , G09G2330/021
Abstract: Disclosed are a display panel and a display device. The display panel includes a pixel circuit. In the pixel circuit, a reset device includes a first sub-transistor and a second sub-transistor, and a connection node between the first sub-transistor and the second sub-transistor is a second node; a compensation device includes a third sub-transistor and a fourth sub-transistor, a connection node between the third sub-transistor and the fourth sub-transistor is a third node; the pixel circuit includes a second capacitor and a third capacitor; two pole plates of the second capacitor are respectively connected to a line of first scan signal and the second node; two pole plates of the third capacitor are respectively connected to a line of second scan signal and the third node; and the second capacitor (C2) and the third capacitor (C3) satisfy: C2≤C3.
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公开(公告)号:US20230196992A1
公开(公告)日:2023-06-22
申请号:US18108373
申请日:2023-02-10
Applicant: Xiamen Tianma Micro-Electronics Co., Ltd.
Inventor: Qingjun LAI , Yihua ZHU , Ping AN
IPC: G09G3/32
CPC classification number: G09G3/32 , G09G2300/043 , G09G2300/0819 , G09G2320/0233 , G09G2320/045
Abstract: Provided are a display panel, a driving method thereof and a display device. The display panel includes: a pixel circuit and a light-emitting element, where the pixel circuit includes a light emitting control module, a drive module and a compensation module; the light emitting control module includes a first light emitting control module configured to selectively provide a first power supply signal for the drive module; the drive module is configured to provide a drive current for the light-emitting element and comprises a drive transistor; the compensation module is configured to compensate a threshold voltage of the drive transistor; and a working process of the pixel circuit includes a light emitting stage and a bias stage.
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