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公开(公告)号：US20160172397A1
公开(公告)日：2016-06-16
申请号：US14970497
申请日：2015-12-15
Applicant: DARTMOUTH COLLEGE , Rambus Inc.
Inventor： Jiaju Ma , Eric R. Fossum , Michael Guidash
IPC: H01L27/146
CPC classification number: H01L27/14614 , H01L27/14616 , H01L27/1463 , H01L27/14643
Abstract: Some embodiments provide an image sensor having a low capacitance floating diffusion node based on by reducing the width of the overlap between the floating diffusion region and the reset gate of the reset transistor that is configured to selectively reset the potential of the floating diffusion, so as to reduce the overlap capacitance therebetween. The reset gate may be tapered along its length so as to have a minimum width proximal to the FD and a maximum width distal to the floating diffusion, such as near or at a drain region of the reset transistor. The floating diffusion may be defined to have a width less than the minimum floating diffusion width that could be achieved by the minimum definable width of a photoresist window opening used for doping the FD region for the given fabrication process. Shallow trench isolation and/or compensation doping may be used for such definition of the floating diffusion.
Abstract translation: 一些实施例提供了一种具有低电容浮动扩散节点的图像传感器，其基于通过减小浮置扩散区域和复位晶体管的复位栅极之间的重叠宽度而被配置为选择性地复位浮动扩散的电位，从而 以减小它们之间的重叠电容。 复位栅极可以沿着其长度逐渐变细，以具有靠近FD的最小宽度和远离浮动扩散部的最大宽度，例如复位晶体管的接近或在漏极区域。 浮动扩散可以被限定为具有小于最小浮动扩散宽度的宽度，该最小浮动扩散宽度可以通过用于给定制造工艺掺杂FD区域的光致抗蚀剂窗口的最小可定义宽度来实现。 浅沟槽隔离和/或补偿掺杂可用于浮动扩散的这种定义。
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公开(公告)号：US11012649B2
公开(公告)日：2021-05-18
申请号：US16503383
申请日：2019-07-03
Applicant: Rambus Inc.
Inventor： Michael Guidash , Jay Endsley , John Ladd , Thomas Vogelsang , Craig M. Smith
Abstract: A control pulse is generated a first control signal line coupled to a transfer gate of a pixel to enable photocharge accumulated within a photosensitive element of the pixel to be transferred to a floating diffusion node, the first control signal line having a capacitive coupling to the floating diffusion node. A feedthrough compensation pulse is generated on a second signal line of the pixel array that also has a capacitive coupling to the floating diffusion node. The feedthrough compensation pulse is generated with a pulse polarity opposite the pulse polarity of the control pulse and is timed to coincide with the control pulse such that capacitive feedthrough of the control pulse to the floating diffusion node is reduced.
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公开(公告)号：US10306169B2
公开(公告)日：2019-05-28
申请号：US15013927
申请日：2016-02-02
Applicant: Rambus Inc.
Inventor： Michael Guidash , Craig M. Smith , Jay Endsley
IPC: H04N5/378
Abstract: A pixel in an integrated-circuit image sensor is enabled to output, throughout a sampling interval, an analog signal having an amplitude dependent, at least in part, on photocharge integrated within a photosensitive element of the pixel. A plurality of samples of the analog signal are generated during an initial portion of the sampling interval that is shorter than a settling time for a maximum possible level of the analog signal.
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公开(公告)号：US20180270432A1
公开(公告)日：2018-09-20
申请号：US15759963
申请日：2016-09-20
Applicant: Rambus Inc.
Inventor： Jay Endsley , Thomas Vogelsang , Craig M. Smith , Michael Guidash , Alexander C. Schneider
CPC classification number: H04N5/378 , H04N5/2355 , H04N5/3532 , H04N5/35536 , H04N5/35554
Abstract: Signals representative of total photocharge integrated within respective image-sensor pixels are read out of the pixels after a first exposure interval that constitutes a first fraction of a frame interval. Signals in excess of a threshold level are read out of the pixels after an ensuing second exposure interval that constitutes a second fraction of the frame interval, leaving residual photocharge within the pixels. After a third exposure interval that constitutes a third fraction of the frame interval, signals representative of a combination of at least the residual photocharge and photocharge integrated within the pixels during the third exposure interval are read out of the pixels.
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公开(公告)号：US09264639B2
公开(公告)日：2016-02-16
申请号：US14616546
申请日：2015-02-06
Applicant: Rambus Inc.
Inventor： Michael Guidash , Jay Endsley , John Ladd , Thomas Vogelsang , Craig M. Smith
CPC classification number: H04N5/374 , H01L27/14643 , H04N5/3577 , H04N5/365 , H04N5/3765 , H04N5/378
Abstract: A control pulse is generated a first control signal line coupled to a transfer gate of a pixel to enable photocharge accumulated within a photosensitive element of the pixel to be transferred to a floating diffusion node, the first control signal line having a capacitive coupling to the floating diffusion node. A feedthrough compensation pulse is generated on a second signal line of the pixel array that also has a capacitive coupling to the floating diffusion node. The feedthrough compensation pulse is generated with a pulse polarity opposite the pulse polarity of the control pulse and is timed to coincide with the control pulse such that capacitive feedthrough of the control pulse to the floating diffusion node is reduced.
Abstract translation: 生成控制脉冲，该第一控制信号线耦合到像素的传输门，以使得能够累积在该像素的光敏元件内的光电荷被传送到浮动扩散节点，该第一控制信号线具有与浮置的电容耦合 扩散节点。 在像素阵列的还具有与浮动扩散节点的电容耦合的第二信号线上产生馈通补偿脉冲。 馈通补偿脉冲以与控制脉冲的脉冲极性相反的脉冲极性产生，并被定时以与控制脉冲一致，使得控制脉冲到浮动扩散节点的电容馈通减小。
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Patent Agency Ranking
公开(公告)号：US09241118B2
公开(公告)日：2016-01-19
申请号：US14094077
申请日：2013-12-02
Applicant: Rambus Inc.
Inventor： Michael Guidash
IPC: H01L27/00 , H04N5/353 , H04N5/355 , H04N5/3745
CPC classification number: H04N5/3535 , H04N5/355 , H04N5/3745
Abstract: An image sensor architecture is implemented within an image sensor system. Image sensor pixels include pixel regions, and each pixel region includes a photosensor, a reset circuit, and a readout circuit. The readout circuit receives enable signals from an enable signal line, and outputs a pixel signal representative of light captured by the photosensor on a combination input/output line. The reset circuit resets the photosensor in response to receiving a first reset signal on a reset line and a second reset signal on the combination input/output line.
Abstract translation: 在图像传感器系统内实现图像传感器架构。 图像传感器像素包括像素区域，并且每个像素区域包括光电传感器，复位电路和读出电路。 读出电路从使能信号线接收使能信号，并将表示由光电传感器捕获的光的像素信号输出到组合输入/输出线上。 复位电路响应于在复位线路上接收到第一复位信号和组合输入/输出线路上的第二复位信号来复位光电传感器。
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公开(公告)号：US20150281613A1
公开(公告)日：2015-10-01
申请号：US14433003
申请日：2013-09-30
Applicant: RAMBUS INC.
Inventor： Thomas Vogelsang , Michael Guidash , Song Xue
CPC classification number: H04N5/378 , H04N5/3355 , H04N5/35536 , H04N5/35545 , H04N5/37455 , H04N5/3765
Abstract: An image sensor architecture with multi-bit sampling is implemented within an image sensor system. A pixel signal produced in response to light incident upon a photosensitive element is converted to a multiple-bit digital value representative of the pixel signal. If the pixel signal exceeds a sampling threshold, the photosensitive element is reset. During an image capture period, digital values associated with pixel signals that exceed a sampling threshold are accumulated into image data.
Abstract translation: 在图像传感器系统中实现具有多位采样的图像传感器架构。 响应于入射到感光元件上的光而产生的像素信号被转换成表示像素信号的多位数字值。 如果像素信号超过采样阈值，则光敏元件被复位。 在图像捕获期间，与超过采样阈值的像素信号相关联的数字值被累积到图像数据中。
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公开(公告)号：US10659715B2
公开(公告)日：2020-05-19
申请号：US16503391
申请日：2019-07-03
Applicant: Rambus Inc.
Inventor： Jay Endsley , Thomas Vogelsang , Craig M. Smith , Michael Guidash , Alexander C. Schneider
Abstract: Signals representative of total photocharge integrated within respective image-sensor pixels are read out of the pixels after a first exposure interval that constitutes a first fraction of a frame interval. Signals in excess of a threshold level are read out of the pixels after an ensuing second exposure interval that constitutes a second fraction of the frame interval, leaving residual photocharge within the pixels. After a third exposure interval that constitutes a third fraction of the frame interval, signals representative of a combination of at least the residual photocharge and photocharge integrated within the pixels during the third exposure interval are read out of the pixels.
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公开(公告)号：US20180124343A1
公开(公告)日：2018-05-03
申请号：US15563875
申请日：2016-03-31
Applicant: Rambus Inc.
Inventor： Thomas Vogelsang , Jay Endsley , Michael Guidash , Craig M. Smith
IPC: H04N5/378 , H04N5/353 , H04N5/355 , H01L27/146
CPC classification number: H04N5/378 , H01L27/14634 , H04N5/3532 , H04N5/3535 , H04N5/35572 , H04N5/35581 , H04N5/357 , H04N5/369
Abstract: Multiple image data subframes corresponding to respective portions of an exposure interval are generated within a sensor device of an image system. Depending on whether the exposure interval exceeds one or more exposure time thresholds, data representative multiple image data subframes are output from the image sensor device in one of at least two formats, including a first format in which each of the subframes of image data is output in its entirety, and a second format in which a logical combination of at least two of the subframes of image data is output instead of the at least two of the subframes of image data such that the total volume of image data output from the image sensor device is reduced relative to the first format.
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公开(公告)号：US09667898B2
公开(公告)日：2017-05-30
申请号：US14433003
申请日：2013-09-30
Applicant: Rambus Inc.
Inventor： Thomas Vogelsang , Michael Guidash , Song Xue
CPC classification number: H04N5/378 , H04N5/3355 , H04N5/35536 , H04N5/35545 , H04N5/37455 , H04N5/3765
Abstract: An image sensor architecture with multi-bit sampling is implemented within an image sensor system. A pixel signal produced in response to light incident upon a photosensitive element is converted to a multiple-bit digital value representative of the pixel signal. If the pixel signal exceeds a sampling threshold, the photosensitive element is reset. During an image capture period, digital values associated with pixel signals that exceed a sampling threshold are accumulated into image data.
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