Photo detector and method for fabricating the same
First Claim
1. A photo detector, comprising:
- a substrate having a transistor region and a photosensitive region;
a first patterned semiconductor layer disposed on the transistor region of the substrate, wherein the first patterned semiconductor layer comprises a first doping region and a second doping region;
a dielectric layer covering the first patterned semiconductor layer of the transistor region, the photosensitive region, and the substrate;
a first patterned conductive layer formed on the dielectric layer of the transistor region and on the dielectric layer of the photosensitive region;
an interlayer dielectric layer covering the dielectric layer and the first patterned conductive layer, wherein the interlayer dielectric layer comprises at least two openings to expose a portion of the first doping region of the first patterned semiconductor layer and a portion of the second doping region of the first patterned semiconductor layer;
a second patterned semiconductor layer disposed on the interlayer dielectric layer of the photosensitive region;
two first electrodes formed on the interlayer dielectric layer and electrically connected with the first patterned semiconductor layer via the at least two openings, respectively; and
two second electrodes formed on the portion of the second patterned semiconductor layer.
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Accused Products
Abstract
A photo detector is disclosed. The photo detector includes a substrate, a first patterned semiconductor layer with a first state, a dielectric layer, a patterned conductive layer, an inter-layer dielectric, a second patterned semiconductor layer with a second state, two first electrodes disposed on the inter-layer dielectric and two second electrodes disposed on portions of the second semiconductor layer. The first patterned semiconductor layer having a first doping region and a second doping region is disposed on a transistor region of the substrate. The dielectric layer is disposed to cover the substrate and the first semiconductor layer, the patterned conductive layer is disposed on the dielectric layer, and the inter-layer dielectric having at least two openings adapted to expose the first doping region and the second doping region is disposed to cover the dielectric layer. The second patterned semiconductor layer is disposed on a photosensitive region and the first electrodes are electrically connected to the first patterned semiconductor layer.
15 Citations
10 Claims
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1. A photo detector, comprising:
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a substrate having a transistor region and a photosensitive region; a first patterned semiconductor layer disposed on the transistor region of the substrate, wherein the first patterned semiconductor layer comprises a first doping region and a second doping region; a dielectric layer covering the first patterned semiconductor layer of the transistor region, the photosensitive region, and the substrate; a first patterned conductive layer formed on the dielectric layer of the transistor region and on the dielectric layer of the photosensitive region; an interlayer dielectric layer covering the dielectric layer and the first patterned conductive layer, wherein the interlayer dielectric layer comprises at least two openings to expose a portion of the first doping region of the first patterned semiconductor layer and a portion of the second doping region of the first patterned semiconductor layer; a second patterned semiconductor layer disposed on the interlayer dielectric layer of the photosensitive region; two first electrodes formed on the interlayer dielectric layer and electrically connected with the first patterned semiconductor layer via the at least two openings, respectively; and two second electrodes formed on the portion of the second patterned semiconductor layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification