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Method and apparatus for implementing efficient CMOS photo sensors

  • US 6,465,862 B1
  • Filed: 10/05/1999
  • Issued: 10/15/2002
  • Est. Priority Date: 10/05/1999
  • Status: Expired due to Term
First Claim
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1. An electronic image sensor apparatus, said apparatus comprising:

  • an n-well implant with a monotonically graded dopant that eliminates minority carrier traps; and

    highly doped guard rings at regions where dark current originates, to locally increase carrier recombination.

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