Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Howard E. Rhodes0
Date of Patent
April 21, 2009
Patent Application Number
12050708
Date Filed
March 18, 2008
Patent Primary Examiner
Patent abstract
An active pixel using a photodiode with multiple species of N type dopants is disclosed. The pixel comprises a photodiode formed in a semiconductor substrate. The photodiode is an N− region formed within a P-type region. The N− region is formed from an implant of arsenic and an implant of phosphorus. Further, the pixel includes a transfer transistor formed between the photodiode and a floating node and selectively operative to transfer a signal from the photodiode to the floating node. Finally, the pixel includes an amplification transistor controlled by the floating node.
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