Semiconductor devices with multi-gate structure and method of manufacturing the same
First Claim
1. A semiconductor device, comprising:
- a first transistor in a first region of a substrate and a second transistor in a second region of the substrate,wherein the first transistor comprises;
a first nanowire having a first channel region;
a first gate electrode surrounding the first nanowire;
a first gate dielectric layer between the first nanowire and the first gate electrode;
a first source/drain region connected to an edge of the first nanowire; and
an inner-insulating spacer between the first gate dielectric layer and the first source/drain region,the second transistor comprises;
a second nanowire having a second channel region;
a second gate electrode surrounding the second nanowire;
a second gate dielectric layer between the second nanowire and the second gate electrode; and
a second source/drain region connected to an edge of the second nanowire,the second gate dielectric layer extends between the second gate electrode and the second source/drain region and is in contact with the second source/drain region, andthe first source/drain region is not in contact with the first gate dielectric layer.
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Abstract
A semiconductor device includes a first transistor in a first region and a second transistor in a second region. The first transistor includes: a first nanowire, a first gate electrode, a first gate dielectric layer, a first source/drain region, and an inner-insulating spacer. The first nanowire has a first channel region. The first gate electrode surrounds the first nanowire. The first gate dielectric layer is between the first nanowire and the first gate electrode. The first source/drain region is connected to an edge of the first nanowire. The inner-insulating spacer is between the first gate dielectric layer and the first source/drain region. The second transistor includes a second nanowire, a second gate electrode, a second gate dielectric layer, and a second source/drain region. The second nanowire has a second channel region. The second gate electrode surrounds the second nanowire. The second gate dielectric layer is between the second nanowire and the second gate electrode. The second source/drain region is connected to an edge of the second nanowire.
43 Citations
18 Claims
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1. A semiconductor device, comprising:
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a first transistor in a first region of a substrate and a second transistor in a second region of the substrate, wherein the first transistor comprises;
a first nanowire having a first channel region;
a first gate electrode surrounding the first nanowire;
a first gate dielectric layer between the first nanowire and the first gate electrode;
a first source/drain region connected to an edge of the first nanowire; and
an inner-insulating spacer between the first gate dielectric layer and the first source/drain region,the second transistor comprises;
a second nanowire having a second channel region;
a second gate electrode surrounding the second nanowire;
a second gate dielectric layer between the second nanowire and the second gate electrode; and
a second source/drain region connected to an edge of the second nanowire,the second gate dielectric layer extends between the second gate electrode and the second source/drain region and is in contact with the second source/drain region, and the first source/drain region is not in contact with the first gate dielectric 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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a first transistor in a first region of a substrate and a second transistor in a second region of the substrate, wherein the first transistor comprises;
a plurality of first nanowires having a plurality of first channel regions;
a first gate electrode surrounding the plurality of first nanowires;
a first gate dielectric layer between the plurality of first nanowires and the first gate electrode;
a first source/drain region connected to an edge of the plurality of first nanowires; and
an inner-insulating spacer between the first gate dielectric layer and the first source/drain region,the second transistor comprises;
a plurality of second nanowires having a plurality of second channel regions;
a second gate electrode surrounding the plurality of second nanowires;
a second gate dielectric layer between the plurality of second nanowires and the second gate electrode; and
a second source/drain region connected to an edge of the plurality of second nanowires,the second gate dielectric layer extends between the second gate electrode and the second source/drain region and is in contact with the second source/drain region, and a distance between the first gate electrode and the first source/drain region in a first direction that is an extension direction of the plurality of first nanowires is larger than a distance between the second gate electrode and the second source/drain region in the first direction. - View Dependent Claims (12, 13, 14)
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15. A semiconductor device, comprising:
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a substrate with a first region and a second region; a first transistor in the first region of the substrate and comprising a first nanowire, a first gate dielectric layer, a first source region, a first drain region, an inner-insulating spacer, and a first gate electrode surrounding the first nanowire, and a second transistor in the second region of the substrate comprising a second nanowire, a second gate dielectric layer, a second source region, a second drain region, a second gate electrode surrounding the second nanowire, wherein the first gate dielectric layer is provided between the first nanowire and the first gate electrode, and between the inner-insulating spacer and the first gate electrode, wherein the inner-insulating spacer maintains a space between the first gate dielectric layer and the first source region and the first drain region, wherein the second gate dielectric layer is provided between the second nanowire and the second gate electrode, between the second source region and the second gate electrode, and between the second drain region and the second gate electrode, wherein the first source region and first drain region are not in contact with the first gate dielectric layer, and wherein the second source region and second drain region are in contact with the second gate dielectric layer. - View Dependent Claims (16, 17, 18)
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Specification