Semiconductor device
First Claim
1. A semiconductor device, comprising:
- a first electrode;
a second electrode;
a silicon carbide layer of which at least a portion is provided between the first electrode and the second electrode, the silicon carbide layer includingan n-type first silicon carbide region that is provided in the silicon carbide layer;
a plurality of p-type second silicon carbide regions that are each provided in the silicon carbide layer between the n-type first silicon carbide region and the first electrode, and extend in a first direction; and
a plurality of n-type third silicon carbide regions each of which is provided in the silicon carbide layer between one of the plurality of p-type second silicon carbide regions and the first electrode, has an n-type impurity concentration higher than an n-type impurity concentration of the n-type first silicon carbide region, and is electrically connected to the first electrode;
a plurality of first conductive layers each of which is in contact with the n-type first silicon carbide region between two adjacent p-type second silicon carbide regions of the plurality of p-type second silicon carbide regions, extends in the first direction, is provided in a first period, and is electrically connected to the first electrode;
a number n, n being 2, 3, 4 or 5, of first gate electrodes that are provided between two adjacent first conductive layers of the plurality of first conductive layers, and extend in the first direction; and
a plurality of first gate insulating layers each of which is provided between one of the n first gate electrodes and the n-type first silicon carbide region.
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Accused Products
Abstract
A semiconductor device including a first electrode, a second electrode, and a silicon carbide layer of which at least a portion is provided between the first electrode and the second electrode, the silicon carbide layer including an n-type first silicon carbide region, a plurality of p-type second silicon carbide regions, and a plurality of n-type third silicon carbide regions. The semiconductor device further includes a plurality of first conductive layers each of which is in contact with the n-type first silicon carbide region, a number n, n being 2, 3, 4 or 5, of first gate electrodes that are provided between two adjacent first conductive layers of the plurality of first conductive layers, and extend in the first direction, and a plurality of first gate insulating layers each of which is provided between one of the n first gate electrodes and the n-type first silicon carbide region.
15 Citations
16 Claims
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1. A semiconductor device, comprising:
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a first electrode; a second electrode; a silicon carbide layer of which at least a portion is provided between the first electrode and the second electrode, the silicon carbide layer including an n-type first silicon carbide region that is provided in the silicon carbide layer; a plurality of p-type second silicon carbide regions that are each provided in the silicon carbide layer between the n-type first silicon carbide region and the first electrode, and extend in a first direction; and a plurality of n-type third silicon carbide regions each of which is provided in the silicon carbide layer between one of the plurality of p-type second silicon carbide regions and the first electrode, has an n-type impurity concentration higher than an n-type impurity concentration of the n-type first silicon carbide region, and is electrically connected to the first electrode; a plurality of first conductive layers each of which is in contact with the n-type first silicon carbide region between two adjacent p-type second silicon carbide regions of the plurality of p-type second silicon carbide regions, extends in the first direction, is provided in a first period, and is electrically connected to the first electrode; a number n, n being 2, 3, 4 or 5, of first gate electrodes that are provided between two adjacent first conductive layers of the plurality of first conductive layers, and extend in the first direction; and a plurality of first gate insulating layers each of which is provided between one of the n first gate electrodes and the n-type first silicon carbide region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification