Photo detector array
AssigneeIntegrated Digital Technologies, Inc.
InventorSEN-SHYONG FANN
Life of this patent
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Abstract
A photo detector device includes a photosensitive transistor capable of detecting an optical signal including an image component and a background component and converting the optical signal into a current including an image current corresponding to the image component and a background current corresponding to the background component, a first amplifier module electrically connected to the photosensitive transistor capable of canceling the background current and amplifying the image current, and a second amplifier module electrically connected to the first amplifier module capable of detecting a direct-current (dc) portion of the image current.
Claims5
1-20. (canceled)
A photo detector device, comprising:
- a substrate;
- a gate electrode over the substrate;
- an insulating layer over the gate electrode and the insulating layer;
- a semiconductor layer over the insulating layer;
- a first diffused region over the semiconductor layer;
- a second diffused region over the semiconductor layer;
- and
- a third diffused region over the semiconductor layer and the gate electrode between the first diffused region and the second diffused region,
- wherein the first diffused region, the gate electrode and the third diffused region form a first photosensitive transistor capable of detecting an optical signal, and the second diffused region, the gate electrode and the third diffused region form a second photosensitive transistor capable of detecting an optical signal.
Dependencies are inferred from the claim text.