Semiconductor device
First Claim
1. A semiconductor device comprising:
- a drift region including a semiconductor of a first conductivity type;
a pair of first gate electrodes contacting the drift region via a first gate insulating film and extending in a first direction into the drift region;
a second gate electrode contacting the drift region via a second gate insulating film and extending in the first direction into the drift region, the second gate electrode positioned between the pair of first gate electrodes in a second direction perpendicular to the first direction;
a first semiconductor region of a second conductivity type between each of the first gate electrodes and the second gate electrode in the second direction;
a second semiconductor region of the first conductivity type selectively provided on the first semiconductor region, and adjacent via the first gate insulating film to one of the first gate electrodes in the pair of first gate electrodes; and
a main electrode having a first portion that is adjacent in the first direction to the pair of first gate electrodes via the first gate insulating film, and a second portion between the pair of first gate electrodes that is adjacent in the first direction to the second gate electrode via the second gate insulating film, and directly adjacent in the second direction to the first semiconductor region and the second semiconductor region.
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Accused Products
Abstract
According to one embodiment, the semiconductor device includes a drift region, a first semiconductor region, a second semiconductor region, a main electrode, first gate electrodes and a second gate electrode. The first gate electrodes and the second gate electrode between a pair of first gate electrodes are provided in the drift region. The first semiconductor region is provided between the first gate electrodes and the second gate electrode. The first semiconductor region has a first side surface opposite to the one of the adjacent ones and a second side surface partially opposite to the second gate electrode. The second semiconductor region is selectively provided on the first semiconductor region. The main electrode has a portion directly adjacent to part of the second side surface and the second semiconductor region.
13 Citations
17 Claims
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1. A semiconductor device comprising:
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a drift region including a semiconductor of a first conductivity type; a pair of first gate electrodes contacting the drift region via a first gate insulating film and extending in a first direction into the drift region; a second gate electrode contacting the drift region via a second gate insulating film and extending in the first direction into the drift region, the second gate electrode positioned between the pair of first gate electrodes in a second direction perpendicular to the first direction; a first semiconductor region of a second conductivity type between each of the first gate electrodes and the second gate electrode in the second direction; a second semiconductor region of the first conductivity type selectively provided on the first semiconductor region, and adjacent via the first gate insulating film to one of the first gate electrodes in the pair of first gate electrodes; and a main electrode having a first portion that is adjacent in the first direction to the pair of first gate electrodes via the first gate insulating film, and a second portion between the pair of first gate electrodes that is adjacent in the first direction to the second gate electrode via the second gate insulating film, and directly adjacent in the second direction to the first semiconductor region and the second semiconductor region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification