Semiconductor device
First Claim
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1. A semiconductor device comprising:
- an oxide semiconductor layer;
a gate overlapping with the oxide semiconductor layer;
a first conductive layer electrically connected to the oxide semiconductor layer and overlapping with the gate;
a second conductive layer over the oxide semiconductor layer and overlapping with the gate, the second conductive layer electrically connected to the oxide semiconductor layer;
an insulating layer over the second conductive layer, the insulating layer including an opening portion; and
a wiring electrically connected to the second conductive layer through the opening portion,wherein the opening portion is positioned between a first part of the first conductive layer and a second part of the first conductive layer.
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Abstract
The semiconductor device includes a power element which is in an on state when voltage is not applied to a gate, a switching field-effect transistor for applying first voltage to the gate of the power element, and a switching field-effect transistor for applying voltage lower than the first voltage to the gate of the power element. The switching field-effect transistors have small off-state current.
162 Citations
34 Claims
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1. A semiconductor device comprising:
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an oxide semiconductor layer; a gate overlapping with the oxide semiconductor layer; a first conductive layer electrically connected to the oxide semiconductor layer and overlapping with the gate; a second conductive layer over the oxide semiconductor layer and overlapping with the gate, the second conductive layer electrically connected to the oxide semiconductor layer; an insulating layer over the second conductive layer, the insulating layer including an opening portion; and a wiring electrically connected to the second conductive layer through the opening portion, wherein the opening portion is positioned between a first part of the first conductive layer and a second part of the first conductive layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A semiconductor device comprising:
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an oxide semiconductor layer; a gate overlapping with the oxide semiconductor layer, the gate including a first opening portion; a first conductive layer electrically connected to the oxide semiconductor layer; a second conductive layer over the oxide semiconductor layer, the second conductive layer electrically connected to the oxide semiconductor layer; an insulating layer over the second conductive layer, the insulating layer including a second opening portion; and a wiring electrically connected to the second conductive layer through the second opening portion, wherein the second opening portion is positioned between a first part of the first conductive layer and a second part of the first conductive layer. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A semiconductor device comprising:
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an oxide semiconductor layer; a gate overlapping with the oxide semiconductor layer, the gate including a first opening portion; a first conductive layer electrically connected to the oxide semiconductor layer and overlapping with the gate; a second conductive layer over the oxide semiconductor layer and overlapping with the gate, the second conductive layer electrically connected to the oxide semiconductor layer; an insulating layer over the second conductive layer, the insulating layer including a second opening portion; and a wiring electrically connected to the second conductive layer through the second opening portion, wherein the second opening portion is positioned between a first part of the first conductive layer and a second part of the first conductive layer. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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Specification