Storage pixel

Details Storage pixel Storage pixel

2008-11-24

2010-11-09

Pham, Long (Department: 2814)

Active solid-state devices (e.g., transistors, solid-state diode

Responsive to non-electrical signal

Electromagnetic or particle radiation

C257S443000, C257S431000

Reexamination Certificate

active

07829969

ABSTRACT:
Embodiments of the present invention provide pixel cells with increased storage capacity, which are capable of anti-blooming operations. In an exemplary embodiment a pixel cell has an electronic shutter that transfers charge generated by a photo-conversion device to a storage node before further transferring the charge to the pixel cell's floating diffusion node. Each pixel cell also includes an anti-blooming transistor for directing excess charge out of each respective pixel cell, thus preventing blooming. Additionally, two or more pixel cells of an array may share a floating diffusion node and reset and readout circuitry.

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patent: 6657665 (2003-12-01), Guidash
patent: 6947088 (2005-09-01), Kochi
patent: 7332786 (2008-02-01), Altice et al.
patent: 7465602 (2008-12-01), Altice et al.

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