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:
May. 01, 2007
Filed:
Dec. 28, 2005
Bum Sik Kim, Suwon, KR;
Bum Sik Kim, Suwon, KR;
DongbuAnam Semiconductor Inc., Seoul, KR;
Abstract
A CMOS image sensor includes a photo sensing device for generating photo charges, a floating diffusion region for storing the photo charges generated by the photo sensing device therein, a transfer transistor connected between the photo sensing device and the floating diffusion region for transferring the photo charges generated by the photo sensing device to the floating diffusion region, a reset transistor connected between a supply voltage terminal and the floating diffusion region for discharging the charges stored in the floating diffusion region to reset the floating diffusion region, a drive transistor for acting as a source follower buffer amplifier in response to an output signal from the photo sensing device, a switching transistor connected to the drive transistor for performing an addressing operation, and a charge control device connected between the photo sensing device and the transfer transistor for controlling the amount of charges stored in the photo sensing device.