SEMICONDUCTOR DEVICE AND MANUFACTURING METHOD THEREOF
First Claim
1. A semiconductor device comprising:
- a gate electrode layer over a substrate;
a gate insulating layer over the gate electrode layer;
a first source electrode layer and a first drain electrode layer over the gate insulating layer;
an oxide semiconductor layer over the gate insulating layer; and
a second source electrode layer and a second drain electrode layer over the oxide semiconductor layer,wherein a first part of a bottom surface of the oxide semiconductor layer is in contact with the first source electrode layer, a second part of the bottom surface is in contact with the first drain electrode layer, and a third part of the bottom surface is in contact with the gate insulating layer,wherein a first part of a top surface of the oxide semiconductor layer is in contact with the second source electrode layer, and a second part of the top surface is in contact with the second drain electrode layer, andwherein the first source electrode layer is electrically connected to the second source electrode layer, and the first drain electrode layer is electrically connected to the second drain electrode layer.
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Accused Products
Abstract
A gate electrode layer over a substrate; a gate insulating layer over the gate electrode layer; a first source electrode layer and a first drain electrode layer over the gate insulating layer; an oxide semiconductor layer over the gate insulating layer; and a second source electrode layer and a second drain electrode layer over the oxide semiconductor layer. A first part, a second part, and a third part of a bottom surface are in contact with the first source electrode layer, the first drain electrode layer, and the gate insulating layer respectively. A first part and a second part of the top surface are in contact with the second source electrode layer and the second drain electrode layer respectively. The first source electrode layer and the first drain electrode layer are electrically connected to the second source electrode layer and the second drain electrode layer respectively.
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Citations
20 Claims
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1. A semiconductor device comprising:
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a gate electrode layer over a substrate; a gate insulating layer over the gate electrode layer; a first source electrode layer and a first drain electrode layer over the gate insulating layer; an oxide semiconductor layer over the gate insulating layer; and a second source electrode layer and a second drain electrode layer over the oxide semiconductor layer, wherein a first part of a bottom surface of the oxide semiconductor layer is in contact with the first source electrode layer, a second part of the bottom surface is in contact with the first drain electrode layer, and a third part of the bottom surface is in contact with the gate insulating layer, wherein a first part of a top surface of the oxide semiconductor layer is in contact with the second source electrode layer, and a second part of the top surface is in contact with the second drain electrode layer, and wherein the first source electrode layer is electrically connected to the second source electrode layer, and the first drain electrode layer is electrically connected to the second drain electrode layer. - View Dependent Claims (2, 3, 4, 5)
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6. A semiconductor device comprising:
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a gate electrode layer, a first source electrode layer, and a first drain electrode layer each formed using the same material layer over a substrate; a gate insulating layer over the gate electrode layer; an oxide semiconductor layer over the gate insulating layer, the first source electrode layer, and the first drain electrode layer; and a second source electrode layer and a second drain electrode layer over the oxide semiconductor layer, the first source electrode layer, and the first drain electrode layer, wherein a first part of a bottom surface of the oxide semiconductor layer is in contact with the first source electrode layer, a second part of the bottom surface is in contact with the first drain electrode layer, and a third part of the bottom surface is in contact with the gate insulating layer, wherein a first part of a top surface of the oxide semiconductor layer is in contact with the second source electrode layer, and a second part of the top surface is in contact with the second drain electrode layer, and wherein the first source electrode layer is electrically connected to the second source electrode layer, and the first drain electrode layer is electrically connected to the second drain electrode layer. - View Dependent Claims (7, 8, 9, 10)
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11. A method for manufacturing a semiconductor device comprising:
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forming a gate electrode layer over a substrate; forming a gate insulating layer over the gate electrode layer; forming a first source electrode layer and a first drain electrode layer over the gate insulating layer; forming an oxide semiconductor layer over the gate insulating layer, the first source electrode layer, and the first drain electrode layer so that a first part of a bottom surface of the oxide semiconductor layer is in contact with the first source electrode layer, a second part of the bottom surface is in contact with the first drain electrode layer, and a third part of the bottom surface is in contact with the gate insulating layer; and forming a second source electrode layer and a second drain electrode layer over the oxide semiconductor layer, the first source electrode layer, and the first drain electrode layer so that a first part of a top surface of the oxide semiconductor layer is in contact with the second source electrode layer, and a second part of the top surface is in contact with the second drain electrode layer, wherein the first source electrode layer is electrically connected to the second source electrode layer, and the first drain electrode layer is electrically connected to the second drain electrode layer. - View Dependent Claims (12, 13, 14, 15)
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16. A method for manufacturing a semiconductor device comprising:
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forming a conductive film over a substrate; forming a gate electrode layer, a first source electrode layer, and a first drain electrode layer using the conductive film; forming a gate insulating layer over the gate electrode layer; forming an oxide semiconductor layer over the gate insulating layer, the first source electrode layer and the first drain electrode layer so that a first part of a bottom surface of the oxide semiconductor layer is in contact with the first source electrode layer, a second part of the bottom surface is in contact with the first drain electrode layer, and a third part of the bottom surface is in contact with the gate insulating layer; and forming a second source electrode layer and a second drain electrode layer over the oxide semiconductor layer, the first source electrode layer, and the first drain electrode layer so that a first part of a top surface of the oxide semiconductor layer is in contact with the second source electrode layer, and a second part of the top surface is in contact with the second drain electrode layer, wherein the first source electrode layer is electrically connected to the second source electrode layer, and the first drain electrode layer is electrically connected to the second drain electrode layer. - View Dependent Claims (17, 18, 19, 20)
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Specification