Foveon, Inc.

Shri Ramaswami

Richard B Merrill

Rastislav Lukac

Glenn Jay Keller

Sanghoon Bae

A pixel sensor array includes a plurality of pixel sensors having a first gain and a plurality of pixel sensors having a second gain less than the first gain.

Imaging array having photodiodes with different light sensitivities and associated image restoration methods

An active pixel sensor in a p-type semiconductor body includes an n-type common node formed below a pinning region. A plurality of n-type blue detectors more lightly doped than the common node are disposed below pinning regions and are spaced apart from the common node forming channels below blue color-select gates. A buried green photocollector is coupled to the surface through a first deep contact spaced apart from the common node forming a channel below a green color-select gate. A red photocollector buried deeper than the green photocollector is coupled to the surface through a second deep contact spaced apart from the common node forming a channel below a red color-select gate. A reset-transistor has a source disposed over and in contact with the common node. A source-follower transistor has gate coupled to the common node, a drain coupled to a power-supply node, and a source forming a pixel-sensor output.

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San Jose, CA, United States of America

Shri Ramaswami