公开(公告)号：US07593050B2

公开(公告)日：2009-09-22

申请号：US11363130

申请日：2006-02-27

Applicant: Weize Xu

Inventor： Weize Xu

IPC: H04N3/14 ,  H04N5/335 ,  H01L31/062 ,  H01L31/113

CPC classification number: H04N5/357 ,  H04N5/3742 ,  H04N5/3765

Abstract: An image sensor includes a plurality of pixels for capturing an image; a sample and hold circuit array having a plurality of units for receiving signals from the plurality of pixels representing the captured image; a decoder for selecting each of the units of the sample and hold circuit array for output; and a delay circuit that includes an adjustable time delay to the decoder for compensating for time delays.

Abstract translation: 图像传感器包括用于捕获图像的多个像素; 采样和保持电路阵列，具有多个单元，用于从表示所捕获图像的多个像素接收信号; 用于选择所述采样和保持电路阵列中的每个单元用于输出的解码器; 以及延迟电路，其包括到解码器的可调时间延迟以补偿时间延迟。

公开(公告)号：US20080169845A1

公开(公告)日：2008-07-17

申请号：US11622777

申请日：2007-01-12

Applicant: Weize Xu

Inventor： Weize Xu

IPC: G11C27/02

CPC classification number: H04N5/378 ,  H04N5/3575 ,  H04N5/363

Abstract: A CMOS image sensor includes a photosensitive region for collecting charge in response to incident light; a charge-to-voltage mechanism for receiving the charge from the photosensitive region and converting the charge to a voltage; an amplifier for receiving and amplifying the voltage; a sample and hold circuit includes (i) a first capacitor one for receiving the voltage and a second capacitor for receiving a reset level; a first bus for receiving the voltage from the first capacitor and a second bus for receiving the reset level from the second capacitor; a differential difference amplifier for receiving the image voltage and the reset level and for determining a difference level between the image voltage and the reset level and for removing offset of the amplifier; and first and second switches respectively connected to the first and second bus for providing an electrical path for removing charge from each bus.

Abstract translation: CMOS图像传感器包括用于响应入射光收集电荷的光敏区域; 用于从光敏区域接收电荷并将电荷转换成电压的电荷 - 电压机构; 用于接收和放大电压的放大器; 采样和保持电路包括（i）用于接收电压的第一电容器和用于接收复位电平的第二电容器; 用于从第一电容器接收电压的第一总线和用于从第二电容器接收复位电平的第二总线; 用于接收图像电压和复位电平并用于确定图像电压和复位电平之间的差电平并用于去除放大器的偏移的差分差分放大器; 以及分别连接到第一和第二总线的第一和第二开关，用于提供用于从每个总线去除电荷的电路径。

公开(公告)号：US06169430A

公开(公告)日：2001-01-02

申请号：US09059966

申请日：1998-04-14

Applicant: Weize Xu

Inventor： Weize Xu

IPC: H03K300

CPC classification number: H03F3/72 ,  H03F3/505

Abstract: A CMOS imager is arranged in a plurality of rows and columns with a gain compensation circuit supplied for each of the column. The gain compensation circuit has a first source follower circuit that employs majority carriers of a first polarity yielding a first voltage gain, and a second source follower circuit employing majority carriers of second polarity opposite the first polarity yielding a voltage gain that is essentially the opposite of the first voltage gain variation as compared to the input voltage. The input to the second source follower circuit that is electrically coupled to the output of the second source follower circuit resulting in a gain compensation between the first and second source follower circuits. A selection circuit is configured to enable the gain compensation circuit upon activation of a column select signal.

Abstract translation: CMOS成像器被布置在具有为每个列提供的增益补偿电路的多个行和列中。 所述增益补偿电路具有第一源极跟随器电路，该第一源极跟随器电路使用产生第一电压增益的第一极性的多数载流子，以及使用与第一极性相反的第二极性的多数载流子的第二源极跟随器电路，产生与第一极性相反的电压增益 与输入电压相比，第一电压增益变化。 与第二源极跟随器电路的输出电耦合的第二源极跟随器电路的输入，从而在第一和第二源极跟随器电路之间产生增益补偿。 选择电路被配置为在激活列选择信号时启用增益补偿电路。

公开(公告)号：US07652706B2

公开(公告)日：2010-01-26

申请号：US11354444

申请日：2006-02-15

Applicant: Weize Xu

Inventor： Weize Xu

IPC: H04N5/335

CPC classification number: H04N5/37455 ,  H04N5/35527 ,  H04N5/365 ,  H04N5/3745

Abstract: An image sensor includes a photosensitive region that accumulates charge corresponding to received incident light; a transfer gate for transferring charge from the photosensitive region; a voltage supply having an increasing voltage over time; a floating diffusion for receiving the charge from the photosensitive region and converting the charge to a voltage; an amplifier for receiving and amplifying a signal from the floating diffusion; a comparator for comparing a voltage from the amplifier to a reference voltage; and a counter for counting clock cycles between initiation of the increasing voltage until a signal is received from the comparator indicating charge transfer from the photosensitive region to the floating diffusion; wherein a digital signal is generated that represents an unfilled capacity of the photosensitive region.

Abstract translation: 图像传感器包括对与所接收的入射光相对应的电荷累积的感光区域; 用于从光敏区转移电荷的转移门; 电压随时间增加的电压; 用于从光敏区域接收电荷并将电荷转换成电压的浮动扩散; 用于接收和放大来自浮动扩散的信号的放大器; 比较器，用于将来自放大器的电压与参考电压进行比较; 以及计数器，用于计数在增加的电压的起始之间的时钟周期，直到从比较器接收到指示从感光区域到浮动扩散的电荷转移的信号; 其中产生表示感光区域的未填充容量的数字信号。

公开(公告)号：US20080239105A1

公开(公告)日：2008-10-02

申请号：US11694291

申请日：2007-03-30

Applicant: Weize Xu

Inventor： Weize Xu

IPC: H01L27/00 ,  H04N5/217 ,  H04N5/335

CPC classification number: H04N5/3745 ,  H04N5/3575 ,  H04N5/365 ,  H04N5/3658

Abstract: A CMOS image sensor includes a photodiode for receiving incident light that is converted to a charge signal; a transfer mechanism for transferring the charge to a sensing node that converts the charge signal to an image voltage signal; and a sample-and-hold circuit. The sample-and-hold circuit includes a capacitor that receives the image voltage signal; and only one buffer amplifier that passes the image voltage signal to a differential amplifier. The buffer amplifier also receives a reset signal that is passed to the differential amplifier.

Abstract translation: CMOS图像传感器包括：光电二极管，用于接收转换成电荷信号的入射光; 用于将电荷转移到将电荷信号转换为图像电压信号的感测节点的传送机构; 和采样保持电路。 采样保持电路包括接收图像电压信号的电容器; 并且只有一个缓冲放大器将图像电压信号传递到差分放大器。 缓冲放大器还接收传递给差分放大器的复位信号。

公开(公告)号：US20080204567A1

公开(公告)日：2008-08-28

申请号：US11678293

申请日：2007-02-23

Applicant: Weize Xu

Inventor： Weize Xu

IPC: H04N5/228

CPC classification number: H03F3/505 ,  H03F3/005 ,  H03F3/082 ,  H03F3/087 ,  H03F3/45475 ,  H03F3/45744 ,  H03F3/45968 ,  H03F2200/375 ,  H03F2203/45136 ,  H03F2203/45551 ,  H03F2203/45586 ,  H03F2203/45588 ,  H03F2203/45612 ,  H04N5/3575 ,  H04N5/374 ,  H04N5/378

Abstract: An active pixel image sensor comprising: (a) a pixel array having a plurality of pixels, each pixel comprising: (i) a photosensitive region connected to a charge-to-voltage conversion region; and (ii) an amplifier connected to the charge-to-voltage conversion region; and (b) a sample and hold circuit connected to one or more pixels comprising: (i) two capacitors for receiving and storing a reset signal and an image signal; (ii) two buffer amplifiers for respectively receiving the reset signal and the image signal respectively from the two capacitors; and (iii) a reference generator circuit connected to an input of the buffer amplifiers for removing offset of the buffer amplifier.

Abstract translation: 一种有源像素图像传感器，包括：（a）具有多个像素的像素阵列，每个像素包括：（i）连接到电荷 - 电压转换区域的感光区域; 和（ii）连接到电荷 - 电压转换区的放大器; 和（b）连接到一个或多个像素的采样和保持电路，包括：（i）用于接收和存储复位信号和图像信号的两个电容器; （ii）两个缓冲放大器，用于分别从两个电容器接收复位信号和图像信号; 和（iii）参考发生器电路，连接到缓冲放大器的输入端，用于去除缓冲放大器的偏移。

公开(公告)号：US07238926B2

公开(公告)日：2007-07-03

申请号：US11398514

申请日：2006-04-05

Applicant: R. Michael Guidash ,  Ravi Mruthyunjaya ,  Weize Xu

Inventor： R. Michael Guidash ,  Ravi Mruthyunjaya ,  Weize Xu

IPC: H01L27/00 ,  H04N5/335

CPC classification number: H04N5/37457 ,  H04N5/365

Abstract: A method of making an image sensor, the method includes the steps of providing a plurality of pixels each with a photodetector; providing an amplifier that is shared between the plurality of photodetectors; providing a transfer gate associated with each photodetector; providing a charge-to-voltage conversion region that is shared between the plurality of photodetectors; determining a capacitance between each transfer gate and the charge-to-voltage conversion region; and modifying the capacitance to be substantially the same by altering a physical structure within one or more pixels.

Abstract translation: 一种制作图像传感器的方法，所述方法包括以下步骤：提供多个像素，每个像素具有光电检测器; 提供在所述多个光电检测器之间共享的放大器; 提供与每个光电检测器相关联的传送门; 提供在所述多个光电检测器之间共享的电荷 - 电压转换区域; 确定每个转移栅极和电荷 - 电压转换区域之间的电容; 并且通过改变一个或多个像素内的物理结构来将电容修改为基本相同。

公开(公告)号：US20060273353A1

公开(公告)日：2006-12-07

申请号：US11440894

申请日：2006-05-25

Applicant: Robert Guidash ,  Ravi Mruthyunjaya ,  Weize Xu

Inventor： Robert Guidash ,  Ravi Mruthyunjaya ,  Weize Xu

IPC: H01L29/768

CPC classification number: H01L27/14641 ,  H01L27/14609

Abstract: An image sensor includes a unit cell having a plurality of pixels; the unit cell comprising an amplifier input transistor that is shared by the plurality of pixels; a plurality of floating diffusions that are joined by a floating diffusion interconnect layer and are connected to the amplifier input transistor; and an interconnect layer which forms an output signal wire which shields the floating diffusion interconnect layer.

Abstract translation: 图像传感器包括具有多个像素的单位单元; 所述单元包括由所述多个像素共享的放大器输入晶体管; 多个浮动扩散，其通过浮动扩散互连层连接并连接到放大器输入晶体管; 以及形成屏蔽浮动扩散互连层的输出信号线的互连层。

公开(公告)号：US08253214B2

公开(公告)日：2012-08-28

申请号：US11440894

申请日：2006-05-25

Applicant: Robert M. Guidash ,  Ravi Mruthyunjaya ,  Weize Xu

Inventor： Robert M. Guidash ,  Ravi Mruthyunjaya ,  Weize Xu

IPC: H01L31/02

CPC classification number: H01L27/14641 ,  H01L27/14609

Abstract: An image sensor includes a unit cell having a plurality of pixels; the unit cell comprising an amplifier input transistor that is shared by the plurality of pixels; a plurality of floating diffusions that are joined by a floating diffusion interconnect layer and are connected to the amplifier input transistor; and an interconnect layer which forms an output signal wire which shields the floating diffusion interconnect layer.

Abstract translation: 图像传感器包括具有多个像素的单位单元; 所述单元包括由所述多个像素共享的放大器输入晶体管; 多个浮动扩散，其通过浮动扩散互连层连接并连接到放大器输入晶体管; 以及形成屏蔽浮动扩散互连层的输出信号线的互连层。

公开(公告)号：US07465934B2

公开(公告)日：2008-12-16

申请号：US11240746

申请日：2005-09-30

Applicant: Weize Xu

Inventor： Weize Xu

IPC: G01T1/24 ,  H01L27/00 ,  H01L31/062

CPC classification number: H04N5/378 ,  H04N5/3742 ,  H04N9/045

Abstract: A CMOS image sensor includes a plurality of pixels arranged in an array; a plurality of sample and hold arrays; and a routing matrix which routes a signal from each pixel to one of the sample and hold arrays in a predetermined order.

Abstract translation: CMOS图像传感器包括排列成阵列的多个像素; 多个采样和保持阵列; 以及路由矩阵，其以预定顺序将来自每个像素的信号路由到采样和保持阵列之一。