The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 30, 2009
Filed:
Oct. 03, 2007
Bong Ki Mheen, Daejeon, KR;
Min Hyung Cho, Daejeon, KR;
MI Jin Kim, Daejeon, KR;
Young Joo Song, Daejeon, KR;
Bong Ki Mheen, Daejeon, KR;
Min Hyung Cho, Daejeon, KR;
Mi Jin Kim, Daejeon, KR;
Young Joo Song, Daejeon, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Abstract
An image sensor operated in a pseudo pinch-off condition capable of reducing a reset voltage of a photodiode and reducing a dark current and fixed pattern noise generated due to discordance of characteristics between pixels is presented. The image sensor has a photosensitive pixel, a driving circuit and an intermediary circuit. The photosensitive pixel can have a photodiode generating a photoelectrons, a transfer transistor transferring the photoelectrons to a diffusion node, and a reset transistor resetting the diffusion node. The driving circuit generates a driving switching signal with respect to the transfer and resist transistors. The intermediary circuit changes characteristics of the signal to drive the photosensitive pixel in a pseudo pinch-off mode.