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公开(公告)号：US20240107195A1
公开(公告)日：2024-03-28
申请号：US18240483
申请日：2023-08-31
Applicant: Samsung Electronics Co., Ltd.
Inventor： Heesung Shim , Seungsik Kim , Jaekyu Lee , Seunghyun Lim , Sungjae Jun
IPC: H04N25/771 , H04N23/667 , H04N25/531 , H04N25/532
CPC classification number: H04N25/771 , H04N23/667 , H04N25/531 , H04N25/532
Abstract: An image sensor comprising a pixel array in which a plurality of pixels are arranged and a row driver . Each of the pixel includes a photodiode, a transfer transistor for transferring photocharges of the photodiode to a floating diffusion node (FD), a conversion gain control transistor, a first source follower for amplifying and outputting the voltage of the FD to a first node, a precharge selection transistor connected between the first node and a second node, a first capacitor, a first sampling transistor connected between the second node and the first capacitor, a second capacitor, a second sampling transistor connected between the second node and the second capacitor, a second source follower for amplifying a voltage of the second node, a first selection transistor connected between the second source follower and a column line, and a second selection transistor connected between the first node and the column line.
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Patent Agency Ranking
公开(公告)号：US20210400214A1
公开(公告)日：2021-12-23
申请号：US17153022
申请日：2021-01-20
Applicant: Samsung Electronics Co., Ltd.
Inventor： Heesung Shim
Abstract: An image sensor pixel includes a substrate, a photodiode and a pixel circuit in the substrate. The pixel circuit includes a transfer element, which is electrically connected between the photodiode and a floating diffusion node that accumulates electrical charges generated by the photodiode in response to light incident the substrate, and a driving element, which is electrically connected to the floating diffusion node. An output circuit is also provided, which is electrically connected between a column line and the pixel circuit. The output circuit includes a switching element electrically connected to an output terminal of the driving element, a primary capacitor electrically connected to the switching element, a secondary capacitor, which is selectively connected to or disconnected from the switching element based on an on/off switching state of a first enable element, and a first selection element electrically connected between the switching element and the column line.
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公开(公告)号：US11792540B2
公开(公告)日：2023-10-17
申请号：US18145460
申请日：2022-12-22
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Jaekyu Lee , Heesung Shim
IPC: H04N25/531 , H01L27/146 , H04N25/75 , H04N25/76 , H04N25/533
CPC classification number: H04N25/531 , H01L27/14612 , H01L27/14643 , H04N25/75
Abstract: An image sensor is disclosed. The image sensor includes a plurality of pixels arranged in a plurality of rows and a plurality of columns, each of the pixels including: a photodiode; a floating diffusion node configured to accumulate photocharges generated from the photodiode; a first capacitor configured to store charges according to a voltage of the floating diffusion node which is reset; a second capacitor configured to store charges according to a voltage of the floating diffusion node in which the photocharges are accumulated; a first sampling transistor connected to a first output node and configured to sample charges to the first capacitor; a second sampling transistor connected to the first output node and configured to sample charges to the second capacitor; and at least one precharge select transistor connected to the first output node and configured to reset the first output node.
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公开(公告)号：US11653110B2
公开(公告)日：2023-05-16
申请号：US17476220
申请日：2021-09-15
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Jaekyu Lee , Heesung Shim
CPC classification number: H04N5/3532 , H01L27/14612 , H01L27/14643 , H04N5/378
Abstract: An image sensor is disclosed. The image sensor includes a plurality of pixels arranged in a plurality of rows and a plurality of columns, each of the pixels including: a photodiode; a floating diffusion node configured to accumulate photocharges generated from the photodiode; a first capacitor configured to store charges according to a voltage of the floating diffusion node which is reset; a second capacitor configured to store charges according to a voltage of the floating diffusion node in which the photocharges are accumulated; a first sampling transistor connected to a first output node and configured to sample charges to the first capacitor; a second sampling transistor connected to the first output node and configured to sample charges to the second capacitor; and at least one precharge select transistor connected to the first output node and configured to reset the first output node.
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公开(公告)号：US11509851B2
公开(公告)日：2022-11-22
申请号：US17396320
申请日：2021-08-06
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Heesung Shim , Sangyoon Kim , Joosung Moon
IPC: H04N5/378 , H04N5/355 , H04N5/374 , H01L27/146 , H04N5/3745 , H01L27/148
Abstract: An image sensor is provided. The image sensor includes a pixel array in which a plurality of pixels are arranged, wherein each of the plurality of pixels includes a photodiode; a floating diffusion node configured to integrate photocharges generated in the photodiode; a first sampling transistor electrically connected to a first node; a first capacitor electrically connected to a first node and configured to store a charge corresponding to a voltage of the floating diffusion node which is reset; a second sampling transistor electrically connected to a second node; a second capacitor electrically connected to the second node and configured to store a charge corresponding to a voltage of the floating diffusion node in which the photocharges are integrated; and at least one mode transistor configured to adjust an equivalent capacitance of each of the first node and the second node according to a mode control signal.
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公开(公告)号：US11206367B1
公开(公告)日：2021-12-21
申请号：US17153022
申请日：2021-01-20
Applicant: Samsung Electronics Co., Ltd.
Inventor： Heesung Shim
Abstract: An image sensor pixel includes a substrate, a photodiode and a pixel circuit in the substrate. The pixel circuit includes a transfer element, which is electrically connected between the photodiode and a floating diffusion node that accumulates electrical charges generated by the photodiode in response to light incident the substrate, and a driving element, which is electrically connected to the floating diffusion node. An output circuit is also provided, which is electrically connected between a column line and the pixel circuit. The output circuit includes a switching element electrically connected to an output terminal of the driving element, a primary capacitor electrically connected to the switching element, a secondary capacitor, which is selectively connected to or disconnected from the switching element based on an on/off switching state of a first enable element, and a first selection element electrically connected between the switching element and the column line.
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