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公开(公告)号：US11457163B1
公开(公告)日：2022-09-27
申请号：US17377413
申请日：2021-07-16
Applicant: PixArt Imaging Inc.
Inventor： Kuan Tang , Jui-Te Chiu
Abstract: An image sensor device is provided to effectively improve the signal discrimination of sensed/sampled pixel values/signals in the image sensor device operating in a dark condition as well as effectively avoiding signal saturation when such image sensor device operates in a light/bright condition. Such image sensor device, when operating in dark/light conditions, can perform the exposure operation to get/sample accurate pixel image signal and pixel reset signal for only one time without estimating the pixel image signal and pixel reset signal by performing the exposure operation twice.
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公开(公告)号：US20220070395A1
公开(公告)日：2022-03-03
申请号：US17183366
申请日：2021-02-24
Applicant: PixArt Imaging Inc.
Inventor： Kuan Tang , Yi-Cheng Chiu , Jui-Te Chiu
IPC: H04N5/355 , H04N5/353 , H01L27/146
Abstract: An image sensor apparatus includes a pixel array having pixel units each including an image sensor cell and a processing circuit. The processing circuit includes a bias transistor, second floating diffusion node, first switch unit, signal transfer capacitor, reset transfer capacitor, second switch unit, and third switch unit. Bias transistor is coupled between first and second floating diffusion nodes and has control terminal coupled to bias voltage. First switch unit is coupled between first and second floating diffusion nodes. Second switch unit is coupled between second floating diffusion node and signal transfer capacitor. Third switch unit is coupled between second floating diffusion node and reset transfer capacitor. Signal transfer capacitor is selectively coupled to second floating diffusion node. Reset transfer capacitor is selectively coupled to second floating diffusion node.
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公开(公告)号：US11018170B2
公开(公告)日：2021-05-25
申请号：US16455964
申请日：2019-06-28
Applicant: PIXART IMAGING INC.
Inventor： Kuan Tang , Jui-Te Chiu , Yi-Cheng Chiu , Chia-Chi Kuo , Kai-Chieh Chuang
IPC: H01L27/146
Abstract: An image sensor includes a pair of pixel sharing circuits, a second reset transistor, an amplifier transistor, a readout transistor and a control circuit. The pair of pixel sharing circuits connected to a floating diffusion node, each including a photon device, a first reset transistor, a capture transistor, a holding transistor, a capacitor and a sharing transistor. The control circuit is configured to control the first reset transistor, the first capture transistor, the first holding transistor and the sharing transistor of each of the pair of sharing pixel circuits to be turned on or off.
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公开(公告)号：US11592331B2
公开(公告)日：2023-02-28
申请号：US17474806
申请日：2021-09-14
Applicant: PixArt Imaging Inc.
Inventor： Kuan Tang , Yi-Cheng Chiu , Chia-Chi Kuo , Jui-Te Chiu , Han-Chi Liu
Abstract: There is provided a circuit to improve the sensing efficiency of pixels that uses the induction effect of a capacitor to duplicate a voltage deviation caused by additional electrons and uses a circuit to cancel out the voltage deviation during reading pixel data thereby improving the sensing efficiency.
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公开(公告)号：US11287316B2
公开(公告)日：2022-03-29
申请号：US16410214
申请日：2019-05-13
Applicant: PixArt Imaging Inc.
Inventor： Kuan Tang , Yi-Cheng Chiu , Chia-Chi Kuo , Jui-Te Chiu , Han-Chi Liu
Abstract: There is provided a circuit to improve the sensing efficiency of pixels that uses the induction effect of a capacitor to duplicate a voltage deviation caused by additional electrons and uses a circuit to cancel out the voltage deviation during reading pixel data thereby improving the sensing efficiency.
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Patent Agency Ranking
公开(公告)号：US20220070399A1
公开(公告)日：2022-03-03
申请号：US17002755
申请日：2020-08-25
Applicant: PixArt Imaging Inc.
Inventor： Kuan Tang , Yi-Cheng Chiu , Jui-Te Chiu
IPC: H04N5/378 , H04N5/369 , H04N5/3745 , H04N5/355
Abstract: An image sensor apparatus includes a pixel array having pixel units each including an image sensor cell and a processing circuit. The processing circuit includes a bias transistor, second floating diffusion node, first switch unit, signal transfer capacitor, reset transfer capacitor, second switch unit, and third switch unit. Bias transistor is coupled between first and second floating diffusion nodes and has control terminal coupled to bias voltage. First switch unit is coupled between first and second floating diffusion nodes. Second switch unit is coupled between second floating diffusion node and signal transfer capacitor. Third switch unit is coupled between second floating diffusion node and reset transfer capacitor. Signal transfer capacitor is selectively coupled to second floating diffusion node. Reset transfer capacitor is selectively coupled to second floating diffusion node.
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公开(公告)号：US11317042B2
公开(公告)日：2022-04-26
申请号：US17183366
申请日：2021-02-24
Applicant: PixArt Imaging Inc.
Inventor： Kuan Tang , Yi-Cheng Chiu , Jui-Te Chiu
IPC: H04N5/355 , H01L27/146 , H04N5/353
Abstract: An image sensor apparatus includes a pixel array having pixel units each including an image sensor cell and a processing circuit. The processing circuit includes a bias transistor, second floating diffusion node, first switch unit, signal transfer capacitor, reset transfer capacitor, second switch unit, and third switch unit. Bias transistor is coupled between first and second floating diffusion nodes and has control terminal coupled to bias voltage. First switch unit is coupled between first and second floating diffusion nodes. Second switch unit is coupled between second floating diffusion node and signal transfer capacitor. Third switch unit is coupled between second floating diffusion node and reset transfer capacitor. Signal transfer capacitor is selectively coupled to second floating diffusion node. Reset transfer capacitor is selectively coupled to second floating diffusion node.
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公开(公告)号：US11265506B1
公开(公告)日：2022-03-01
申请号：US17002755
申请日：2020-08-25
Applicant: PixArt Imaging Inc.
Inventor： Kuan Tang , Yi-Cheng Chiu , Jui-Te Chiu
IPC: H04N5/378 , H04N5/355 , H04N5/3745 , H04N5/369
Abstract: An image sensor apparatus includes a pixel array having pixel units each including an image sensor cell and a processing circuit. The processing circuit includes a bias transistor, second floating diffusion node, first switch unit, signal transfer capacitor, reset transfer capacitor, second switch unit, and third switch unit. Bias transistor is coupled between first and second floating diffusion nodes and has control terminal coupled to bias voltage. First switch unit is coupled between first and second floating diffusion nodes. Second switch unit is coupled between second floating diffusion node and signal transfer capacitor. Third switch unit is coupled between second floating diffusion node and reset transfer capacitor. Signal transfer capacitor is selectively coupled to second floating diffusion node. Reset transfer capacitor is selectively coupled to second floating diffusion node.
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公开(公告)号：US11614359B2
公开(公告)日：2023-03-28
申请号：US17474738
申请日：2021-09-14
Applicant: PixArt Imaging Inc.
Inventor： Kuan Tang , Yi-Cheng Chiu , Chia-Chi Kuo , Jui-Te Chiu , Han-Chi Liu
Abstract: There is provided a circuit to improve the sensing efficiency of pixels that uses the induction effect of a capacitor to duplicate a voltage deviation caused by additional electrons and uses a circuit to cancel out the voltage deviation during reading pixel data thereby improving the sensing efficiency.
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公开(公告)号：US11592330B2
公开(公告)日：2023-02-28
申请号：US17474770
申请日：2021-09-14
Applicant: PixArt Imaging Inc.
Inventor： Kuan Tang , Yi-Cheng Chiu , Chia-Chi Kuo , Jui-Te Chiu , Han-Chi Liu
Abstract: There is provided a circuit to improve the sensing efficiency of pixels that uses the induction effect of a capacitor to duplicate a voltage deviation caused by additional electrons and uses a circuit to cancel out the voltage deviation during reading pixel data thereby improving the sensing efficiency.
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