公开(公告)号：US10128286B2

公开(公告)日：2018-11-13

申请号：US15208734

申请日：2014-06-27

Applicant: BAE Systems Information and Electronic Systems Integration Inc.

Inventor： Boyd Fowler

IPC: H01L27/146 ,  H04N5/378 ,  H04N5/225 ,  H04N5/3745 ,  H04N5/355

Abstract: A pixel sensor having a main photodetector and a parasitic photodiode and a method for reading out that pixel sensor are disclosed. The pixel sensor is read by reading a first potential on a floating diffusion node in the pixel sensor while the floating diffusion node is isolated from the main photodiode. The pixel sensor is then exposed to light such that the floating diffusion node and the photodetector are both exposed to the light. A second potential on the floating diffusion node is then readout while the floating diffusion node is isolated from the main photodiode. After the first and second potentials are readout, a third potential on the floating diffusion node is readout. The main photodiode is then connected to the floating diffusion node, and a fourth potential on the floating diffusion node is readout. First and second light intensities are determined from the readout potentials.

公开(公告)号：US20170018582A1

公开(公告)日：2017-01-19

申请号：US15208734

申请日：2014-06-27

Applicant: BAE Systems Information and Electronic Systems Integration Inc.

Inventor： Boyd Fowler

IPC: H01L27/146 ,  H04N5/225 ,  H04N5/378

CPC classification number: H01L27/1461 ,  H01L27/14609 ,  H01L27/14643 ,  H01L27/14654 ,  H01L27/14656 ,  H04N5/2253 ,  H04N5/35563 ,  H04N5/3745 ,  H04N5/378

Abstract: A pixel sensor having a main photodetector and a parasitic photodiode and a method for reading out that pixel sensor are disclosed. The pixel sensor is read by reading a first potential on a floating diffusion node in the pixel sensor while the floating diffusion node is isolated from the main photodiode. The pixel sensor is then exposed to light, such, that the floating diffusion node and the photodetector are both exposed to the light. A second potential on the floating diffusion node is then readout while the floating diffusion node is isolated from the main photodiode. After the first and second potentials are readout a third potential on the floating diffusion node is readout. The main photodiode is then connected to the floating diffusion node, and a fourth potential on the floating diffusion node is readout First and second light intensities are determined from the readout potentials.

Abstract translation: 公开了一种具有主光电检测器和寄生光电二极管的像素传感器以及用于读出该像素传感器的方法。 通过读取像素传感器中的浮动扩散节点上的第一电位而读取像素传感器，同时浮动扩散节点与主光电二极管隔离。 然后将像素传感器暴露于光，使得浮动扩散节点和光电检测器都暴露于光。 然后读出浮动扩散节点上的第二个电位，而浮动扩散节点与主光电二极管隔离。 在读出第一和第二电位之后，读出浮动扩散节点上的第三电位。 然后将主光电二极管连接到浮动扩散节点，并且读出浮动扩散节点上的第四电位从读出电位确定第一和第二光强度。