Combined photogate and photodiode active pixel image sensor

Details Combined photogate and photodiode active pixel image sensor Combined photogate and photodiode active pixel image sensor

H - Electricity

01

L

H01L 27/146 (2006.01) H04N 1/19 (2006.01) H04N 3/15 (2006.01) H04N 9/04 (2006.01)

Patent

CA 2180389

An active pixel image sensor includes an array of pixels arranged in a first group and a second group. The first group may constitute a row and the second group may constitute a column, for example. A first common conductor is coupled to the pixels in the first group for conducting control signals. A second common conductor is coupled to the pixels in the second group for selectively transmitting signals to processing electronics. Each of the pixels includes a plurality of sensing elements that are each configured for capturing a portion of energy from an object to be imaged. At least one of the sensing elements is of a type distinct from another of the sensing elements. For example, one of the sensing elements may be a photogate and another may be a photodiode. An amplifying is provided for receiving signals from selected ones of the plurality of sensingelements and for selectively providing output signals to the second common conductor.

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