Semiconductor device including a multigate transistor formed with fin structure
First Claim
1. A semiconductor device, comprising:
- a substrate;
a plurality of fins comprising a first fin, a second fin, a third fin, a fourth fin and a fifth fin, each of the plurality of fins protruding from the substrate in a first direction, and spaced apart from one another in a second direction that intersects the first direction; and
a plurality of trenches comprising a first trench, a second trench, a third trench and a fourth trench, each of the plurality of trenches being formed between adjacent fins of the plurality of fins,wherein variation of a first width of the first trench and a third width of the third trench is smaller than a first variation and variation of a second width of the second trench and a fourth width of the fourth trench is smaller than a second variation,wherein the second variation is greater than the first variation, andwherein variation of a first depth of the first trench and a third depth of the third trench is smaller than a third variation, and variation of a second depth of the second trench and a fourth depth of the fourth trench is smaller than a fourth variation, andwherein the fourth variation is greater than the third variation.
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Accused Products
Abstract
A semiconductor device is provided. The semiconductor device includes a substrate, a plurality of fins comprising a first fin, a second fin, a third fin, a fourth fin and a fifth fin, each of the plurality of protruding from the substrate in a first direction, and spaced apart from one another in a second direction that intersects the first direction and a plurality of trenches comprising a first trench, a second trench, a third trench and a fourth trench, each of the plurality of trenches being formed between adjacent fins of the plurality of fins, wherein variation of a first width of the first trench and a third width of the third trench is smaller than a first variation, wherein variation of a second width of the second trench and a fourth width of the fourth trench is smaller than a second variation, and wherein the second variation is greater than the first variation.
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Citations
19 Claims
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1. A semiconductor device, comprising:
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a substrate; a plurality of fins comprising a first fin, a second fin, a third fin, a fourth fin and a fifth fin, each of the plurality of fins protruding from the substrate in a first direction, and spaced apart from one another in a second direction that intersects the first direction; and a plurality of trenches comprising a first trench, a second trench, a third trench and a fourth trench, each of the plurality of trenches being formed between adjacent fins of the plurality of fins, wherein variation of a first width of the first trench and a third width of the third trench is smaller than a first variation and variation of a second width of the second trench and a fourth width of the fourth trench is smaller than a second variation, wherein the second variation is greater than the first variation, and wherein variation of a first depth of the first trench and a third depth of the third trench is smaller than a third variation, and variation of a second depth of the second trench and a fourth depth of the fourth trench is smaller than a fourth variation, and wherein the fourth variation is greater than the third variation. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A semiconductor device, comprising:
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a substrate; a first fin structure, a second fin structure, and a third fin structure protruding from the substrate in a first direction, and spaced apart from each other in a second direction that intersects the first direction; a first trench to space the first fin structure and the second fin structure apart from each other; and a fourth trench to space the second fin structure and the third fin structure apart from each other, wherein the first fin structure comprises a first base fin protruding from the substrate, a first fin and a second fin protruding from the first base fin and spaced apart from each other in the second direction, and a second trench to space the first fin and the second fin apart from each other, wherein the second fin structure comprises a second base fin protruding from the substrate, a third fin and a fourth fin protruding from the second base fin and spaced apart from each other in the second direction, and a third trench to space the third fin and the fourth fin apart from each other, wherein variation of a first depth of the first trench and a fourth depth of the fourth trench is smaller than a first variation, and variation of a second depth of the second trench and a third depth of the third trench is smaller than a second variation, and wherein the first variation is greater than the second variation. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A semiconductor device, comprising:
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a substrate; a first fin structure, a second fin structure, and a third fin structure protruding from the substrate and extending in a first direction, and spaced apart from each other in a second direction that intersects the first direction; a first trench to space the first fin structure and the second fin structure apart from each other; and a fourth trench to space the second fin structure and the third fin structure apart from each other, wherein the first fin structure comprises a first base fin protruding from the substrate, a first fin and a second fin protruding from the first base fin and spaced apart from each other in the second direction, and a second trench to space the first fin and the second fin apart from each other, wherein the second fin structure comprises a second base fin protruding from the substrate, a third fin protruding from the second base fin, and a third trench to define the third fin from the second trench, wherein the third trench is formed on the second base fin, wherein variation of a first depth of the first trench and a fourth depth of the fourth trench is smaller than a first variation, and variation of a second depth of the second trench and a third depth of the third trench is smaller than a second variation, and wherein the first variation is greater than the second variation. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification