Semiconductor device
First Claim
1. A semiconductor device comprising:
- a first electrode;
a second electrode;
a first semiconductor region of a first conductivity type that is provided between the first electrode and the second electrode;
a third electrode that is provided between the first semiconductor region and the second electrode;
a fourth electrode that is provided between the first semiconductor region and the second electrode and is aligned with the third electrode in a second direction intersecting a first direction toward the second electrode from the first electrode;
a fifth electrode that is provided between the first semiconductor region and the second electrode and is aligned with the fourth electrode in the second direction, the fifth electrode provided at an opposite side to the third electrode, and is in contact with the second electrode;
a second semiconductor region of a second conductivity type that is provided between the first semiconductor region and the second electrode and between the third electrode and the fourth electrode, and is electrically connected to the second electrode;
a third semiconductor region of the first conductivity type that is provided between the second semiconductor region and the second electrode and is electrically connected to the second electrode;
a fourth semiconductor region of the second conductivity type that is provided between the first semiconductor region and the second electrode to be electrically connected to the second electrode, and is aligned with the second semiconductor region via the fourth electrode in the second direction;
a first insulating film that is provided between (1) the third electrode and (2) the first semiconductor region, the second semiconductor region, the third semiconductor region, and the second electrode;
a second insulating film that is provided between (1) the fourth electrode and (2) the first semiconductor region, the second semiconductor region, and the fourth semiconductor region; and
a fifth semiconductor region of a second conductivity type that is provided between the first electrode and the first semiconductor region and is electrically connected to the first electrode, wherein an impurity concentration profile of the first semiconductor region in the first direction has a local maximum value between the third electrode and the fourth electrode and does not have the local maximum value between the fourth electrode and the fifth electrode.
1 Assignment
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Accused Products
Abstract
A semiconductor device includes a third electrode between a first semiconductor region and a second electrode, a fourth electrode between the first semiconductor region and the second electrode, a second semiconductor region between the first semiconductor region and the second electrode and between the third electrode and the fourth electrode, a third semiconductor region between the second semiconductor region and the second electrode, a fourth electrode between the first semiconductor region and the second electrode to be electrically connected to the second electrode, and a fifth semiconductor region between the first electrode and the first semiconductor region. A first insulating film is provided between the third electrode and the first semiconductor region, the second semiconductor region, the third semiconductor region and the second electrode. A second insulating film is provided between the fourth semiconductor region and the first semiconductor region, the second semiconductor region, and the fourth semiconductor region.
13 Citations
9 Claims
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1. A semiconductor device comprising:
- a first electrode;
a second electrode;
a first semiconductor region of a first conductivity type that is provided between the first electrode and the second electrode;
a third electrode that is provided between the first semiconductor region and the second electrode;
a fourth electrode that is provided between the first semiconductor region and the second electrode and is aligned with the third electrode in a second direction intersecting a first direction toward the second electrode from the first electrode;
a fifth electrode that is provided between the first semiconductor region and the second electrode and is aligned with the fourth electrode in the second direction, the fifth electrode provided at an opposite side to the third electrode, and is in contact with the second electrode;
a second semiconductor region of a second conductivity type that is provided between the first semiconductor region and the second electrode and between the third electrode and the fourth electrode, and is electrically connected to the second electrode;
a third semiconductor region of the first conductivity type that is provided between the second semiconductor region and the second electrode and is electrically connected to the second electrode;
a fourth semiconductor region of the second conductivity type that is provided between the first semiconductor region and the second electrode to be electrically connected to the second electrode, and is aligned with the second semiconductor region via the fourth electrode in the second direction;
a first insulating film that is provided between (1) the third electrode and (2) the first semiconductor region, the second semiconductor region, the third semiconductor region, and the second electrode;
a second insulating film that is provided between (1) the fourth electrode and (2) the first semiconductor region, the second semiconductor region, and the fourth semiconductor region; and
a fifth semiconductor region of a second conductivity type that is provided between the first electrode and the first semiconductor region and is electrically connected to the first electrode, wherein an impurity concentration profile of the first semiconductor region in the first direction has a local maximum value between the third electrode and the fourth electrode and does not have the local maximum value between the fourth electrode and the fifth electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
- a first electrode;
Specification