Shared amplifier pixel with matched coupling capacitances

Details Shared amplifier pixel with matched coupling capacitances Shared amplifier pixel with matched coupling capacitances

2007-07-03

2007-07-03

Pyo, Kevin (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

C348S308000, C257S292000

Reexamination Certificate

active

11398514

ABSTRACT:
A method of making an image sensor, the method includes the steps of providing a plurality of pixels each with a photodetector; providing an amplifier that is shared between the plurality of photodetectors; providing a transfer gate associated with each photodetector; providing a charge-to-voltage conversion region that is shared between the plurality of photodetectors; determining a capacitance between each transfer gate and the charge-to-voltage conversion region; and modifying the capacitance to be substantially the same by altering a physical structure within one or more pixels.

REFERENCES:
patent: 2004/0012697 (2004-01-01), Rossi
patent: 2005/0012836 (2005-01-01), Guidash
patent: 2005/0110884 (2005-05-01), Altice, Jr. et al.
patent: 2006/0146161 (2006-07-01), Farrier

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