Semiconductor device and method for fabricating the same
First Claim
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1. A semiconductor device, comprising:
- a substrate having a first region and a second region;
a first fin-shaped structure on the first region and a second fin-shaped structure on the second region;
a shallow trench isolation (STI) around the first fin-shaped structure and the second fin-shaped structure;
a first oxide layer on the first fin-shaped structure;
a second oxide layer on and directly contacting the first oxide layer and the STI; and
a third oxide layer on the second fin-shaped structure having a width less than a width of the first fin-shaped structure, wherein a thickness of the third oxide layer is less than a thickness of the first oxide layer and different from a thickness of the second oxide layer and the thickness of the first oxide layer on the first region is less than the thickness of the second oxide layer on the first region.
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Abstract
A semiconductor device includes: a substrate having a first region and a second region; a first fin-shaped structure on the first region and a second fin-shaped structure on the second region; a shallow trench isolation (STI) around the first fin-shaped structure and the second fin-shaped structure; a first oxide layer on the first fin-shaped structure; a second oxide layer on and directly contacting the first oxide layer and the STI; and a third oxide layer on the second fin-shaped structure, wherein a thickness of the third oxide layer is less than a thickness of the first oxide layer.
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Citations
5 Claims
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1. A semiconductor device, comprising:
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a substrate having a first region and a second region; a first fin-shaped structure on the first region and a second fin-shaped structure on the second region; a shallow trench isolation (STI) around the first fin-shaped structure and the second fin-shaped structure; a first oxide layer on the first fin-shaped structure; a second oxide layer on and directly contacting the first oxide layer and the STI; and a third oxide layer on the second fin-shaped structure having a width less than a width of the first fin-shaped structure, wherein a thickness of the third oxide layer is less than a thickness of the first oxide layer and different from a thickness of the second oxide layer and the thickness of the first oxide layer on the first region is less than the thickness of the second oxide layer on the first region. - View Dependent Claims (2, 3, 4, 5)
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Specification