Invention Grant
- Patent Title: Pixel sensor cell with frame storage capability
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Application No.: US12174289Application Date: 2008-07-16
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Publication No.: US08009216B2Publication Date: 2011-08-30
- Inventor: James W. Adkisson , John J. Ellis-Monaghan , Rajendran Krishnasamy , Solomon Mulugeta , Charles F. Musante , Richard J. Rassel
- Applicant: James W. Adkisson , John J. Ellis-Monaghan , Rajendran Krishnasamy , Solomon Mulugeta , Charles F. Musante , Richard J. Rassel
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Scully, Scott, Murphy & Presser, P.C.
- Agent Anthony J. Canale
- Main IPC: H04N3/14
- IPC: H04N3/14 ; H04N5/335

Abstract:
A set of frame transfer transistors are provided between a hold gate transistor and a transfer gate transistor of a CMOS image sensor to enable storage of charge generate in the photosensitive diode after exposure. The readout of the charges from the set of frame transfer transistors may be performed after a plurality of exposures of the CMOS image sensor, between each of which charges are shifted toward the transfer gate transistor within the set of frame transfer transistors. Useful operation modes are enabled including a burst mode operation for rapid capture of successive images and high dynamic range operations in which multiple images are taken with different exposure times or a large capacitance is provided by ganging the diffusions of the set of frame transfer transistors.
Public/Granted literature
- US20100013973A1 PIXEL SENSOR CELL WITH FRAME STORAGE CAPABILITY Public/Granted day:2010-01-21
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