UNIT PIXEL AND THREE-DIMENSIONAL IMAGE SENSOR INCLUDING THE SAME
First Claim
Patent Images
1. A unit pixel of a three-dimensional image sensor, comprising:
- a non-silicon photodetector formed at a silicon substrate, the non-silicon photodetector comprising at least one of non-silicon materials to generate a photocharge in response to incident light; and
at least one readout circuit formed at the silicon substrate, the at least one readout circuit outputting a sensing signal based on the photocharge, the sensing signal generating depth information on a distance to an object.
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Abstract
A unit pixel of a three-dimensional image sensor includes a non-silicon photodetector and at least one readout circuit. The non-silicon photodetector is formed at a silicon substrate, and the non-silicon photodetector comprising at least one of non-silicon materials to generate a photocharge in response to incident light. The at least one readout circuit is formed at the silicon substrate, the at least one readout circuit outputs a sensing signal based on the photocharge, and the sensing signal generates depth information on a distance to an object.
64 Citations
22 Claims
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1. A unit pixel of a three-dimensional image sensor, comprising:
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a non-silicon photodetector formed at a silicon substrate, the non-silicon photodetector comprising at least one of non-silicon materials to generate a photocharge in response to incident light; and at least one readout circuit formed at the silicon substrate, the at least one readout circuit outputting a sensing signal based on the photocharge, the sensing signal generating depth information on a distance to an object. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A three-dimensional image sensor comprising:
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a light source module configured to generate modulated transmission light having periodically-varying intensity; a pixel array comprising a plurality of unit pixels which convert incident light to electric signals, the incident light including the modulated transmission light reflected by an object; and an image signal processor which generates depth information based on the electric signals, wherein one of the plurality of unit pixels comprises; a non-silicon photodetector formed at a silicon substrate, the non-silicon photodetector comprising at least one of non-silicon materials to generate a photocharge in response to the incident light; and at least one readout circuit formed at the silicon substrate, the at least one readout circuit outputting a sensing signal based on the photocharge, the sensing signal corresponding to one of the electric signals. - View Dependent Claims (15)
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16. A unit pixel of a three-dimensional image sensor, comprising:
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a non-silicon photodetector coupled to a first voltage through a conduction path, the non-silicon photodetector generating a photocharge in response to incident light; and at least one readout circuit coupled to the non-silicon photodetector through the conduction path, the at least one readout circuit comprises a switching block, a readout block, and a first capacitor, and the at least one readout circuit outputs a sensing signal for generating depth information on a distance to an object, based on the photocharge. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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Specification