Semiconductor device
First Claim
1. A semiconductor device comprising:
- a gate electrode including a pair of first protrusions and a second protrusion provided between the pair of first protrusions;
a gate insulating film over the gate electrode;
a semiconductor film which is in contact with the gate insulating film and overlaps with the pair of first protrusions and the second protrusion; and
a pair of electrodes which is in contact with the semiconductor film and overlaps with the pair of first protrusions,wherein the second protrusion is wider than each of the pair of first protrusions,wherein side edges of the semiconductor film are on outer sides of top surfaces of the pair of first protrusions in a direction of a channel width of the semiconductor film, andwherein side edges of the pair of electrodes are on outer sides of top surfaces of the pair of first protrusions in the direction of the channel width of the semiconductor film.
1 Assignment
0 Petitions
Accused Products
Abstract
A semiconductor device of the present invention includes a gate electrode which includes a pair of first protrusions and a second protrusion provided between the pair of first protrusions; a gate insulating film covering the gate electrode; a semiconductor film which is in contact with the gate insulating film and overlaps with the pair of first protrusions and the second protrusion; and a pair of electrodes which is in contact with the semiconductor film and overlaps with the pair of first protrusions. The side edges of the semiconductor film are on the outer sides than the top surfaces of the pair of first protrusions in the direction of the channel width of the semiconductor film. The side edges of the pair of electrodes are on the outer sides than the top surfaces of the pair of first protrusions in the direction of the channel width of the semiconductor film.
104 Citations
15 Claims
-
1. A semiconductor device comprising:
-
a gate electrode including a pair of first protrusions and a second protrusion provided between the pair of first protrusions; a gate insulating film over the gate electrode; a semiconductor film which is in contact with the gate insulating film and overlaps with the pair of first protrusions and the second protrusion; and a pair of electrodes which is in contact with the semiconductor film and overlaps with the pair of first protrusions, wherein the second protrusion is wider than each of the pair of first protrusions, wherein side edges of the semiconductor film are on outer sides of top surfaces of the pair of first protrusions in a direction of a channel width of the semiconductor film, and wherein side edges of the pair of electrodes are on outer sides of top surfaces of the pair of first protrusions in the direction of the channel width of the semiconductor film. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A semiconductor device comprising:
-
a gate electrode including a plurality of pairs of first protrusions and a second protrusion provided between the plurality of pairs of first protrusions; a gate insulating film over the gate electrode; a semiconductor film which is in contact with the gate insulating film and overlaps with the plurality of pairs of first protrusions and the second protrusion; and a pair of electrodes which is in contact with the semiconductor film and overlaps with the plurality of pairs of first protrusions, wherein the second protrusion is wider than each of the plurality of pairs of first protrusions, wherein one of side edges of the semiconductor film in a direction of a channel width are provided over top surfaces of the plurality of pairs of first protrusions, and the other of the side edges of the semiconductor film in the direction of the channel width is provided over top surfaces of a pair of first protrusions which is different from the one of the plurality of pairs of first protrusions, and wherein one of side edges of the pair of electrodes in the direction of the channel width are provided over top surfaces of the plurality of pairs of first protrusions, and the other of the side edges of the pair of electrodes in the direction of the channel width is provided over top surfaces of a pair of first protrusions which is different from the one of the plurality of pairs of first protrusions. - View Dependent Claims (10, 11, 12, 13, 14, 15)
-
Specification