Title:
自動露光制御及び相関二重サンプリング用CMOSイメージャ
Document Type and Number:
Japanese Patent JP2007529145
Kind Code:
A
Abstract:
Embodiments of the invention provide pixel cells that allow both automatic light control and correlated double sampling operations. The pixel cell includes first and second photo-conversion devices that can be separately read out. For example, the second photo-conversion device can be the pixel cells' floating diffusion region, with an area and doping profile suitable for photo-conversion. An image sensor may include an array of pixel cells, some or all of which have two photo-conversion devices, and peripheral circuitry for reading out signals from the pixel cells. The image sensor's readout circuitry may monitor charge generated by the second photo-conversion devices to determine when to read out signals from the first photo-conversion devices.
Inventors:
Howard Elodes
Application Number:
JP2006518722A
Publication Date:
October 18, 2007
Filing Date:
June 30, 2004
Export Citation:
Assignee:
MICRON TECHNOLOGY, INC.
International Classes:
H04N5/335; H01L27/146; H01L27/148; H04N3/15
Attorney, Agent or Firm:
Kosaku Sugimura
Kazuaki Takami
Hiroshi Tokunaga
Yoshiyuki Iwasa
Shiro Fujitani
Kiyoshi Kuruma
Kazuyuki Tomita
Kazuaki Takami
Hiroshi Tokunaga
Yoshiyuki Iwasa
Shiro Fujitani
Kiyoshi Kuruma
Kazuyuki Tomita