公开(公告)号：US20040263656A1

公开(公告)日：2004-12-30

申请号：US10827094

申请日：2004-04-19

Applicant: STMicroelectronics S.A.

Inventor： Laurent Simony

IPC: H04N005/335

CPC classification number: H04N5/378 ,  H04N5/3575

Abstract: The sampling of a pixel signal by a sampling capacitor is effectuated by applying to the sampling capacitor a voltage equal to the corresponding pixel voltage minus the value of the gate-source voltage of a follower transistor biased with a predetermined constant bias current for a first predetermined duration so as to obtain for the sampling capacitor a final state of stable charge. The bias current is then interrupted. Lastly, the end of the sampling pulse occurs on completion of a second predetermined duration after the said interruption of the current.

Abstract translation: 通过对采样电容器施加等于相应像素电压的电压减去以预定的恒定偏置电流偏置的跟随器晶体管的栅极 - 源极电压的值来实现采样电容器的采样电容的第一预定 持续时间，以便为采样电容器获得稳定电荷的最终状态。 然后中断偏置电流。 最后，采样脉冲的结束在所述电流中断之后的第二预定持续时间完成。

公开(公告)号：US20030214596A1

公开(公告)日：2003-11-20

申请号：US10437741

申请日：2003-05-14

Applicant: STMICROELECTRONICS S.A.

Inventor： Laurent Simony

IPC: H04N005/335

CPC classification number: H04N5/363

Abstract: A low-noise CMOS active pixel for image sensors comprises a photosensitive element (PD), a feedback capacitive element (CF) with a capacitance CF, and four transistors, namely a first transistor (M1), two reset transistors (M3, M4) and one pixel selection transistor (M2). These components are laid out and controlled in such a way that the first transistor (M1) is mounted as an amplifier during the pixel reset phase and as a follower during the read phase. The reset transistors (M3, M4) are parallel-connected so that one of them (M4) compensates for the negative effects of the other transistor (M3) on the node common to the two transistors.

Abstract translation: 用于图像传感器的低噪声CMOS有源像素包括光敏元件（PD），具有电容CF的反馈电容元件（CF）和四个晶体管，即第一晶体管（M1），两个复位晶体管（M3，M4） 和一个像素选择晶体管（M2）。 这些部件被布置和控制，使得第一晶体管（M1）在像素复位阶段期间作为放大器安装，并且在读取阶段期间作为跟随器安装。 复位晶体管（M3，M4）并联，使得它们中的一个（M4）补偿两个晶体管共同的节点上的另一个晶体管（M3）的负面影响。

公开(公告)号：US20030034434A1

公开(公告)日：2003-02-20

申请号：US10156710

申请日：2002-05-28

Applicant: STMICROELECTRONICS S.A.

Inventor： Laurent Simony

IPC: H01L027/00

CPC classification number: H04N5/363

Abstract: A CMOS active pixel for image sensors has a photosensitive element, a capacitive feedback element with a capacitance CF, and four transistors, namely a first transistor, two reset transistors and a transistor for the selection of the pixel. These transistors are laid out and controlled in such a way that the first transistor is mounted as an amplifier during the pixel reset phase and as a follower during the read phase.

Abstract translation: 用于图像传感器的CMOS有源像素具有光敏元件，具有电容CF的电容反馈元件和四个晶体管，即第一晶体管，两个复位晶体管和用于选择像素的晶体管。 这些晶体管被布局和控制，使得第一晶体管在像素复位阶段期间作为放大器安装，并且在读取阶段期间作为跟随器安装。