Method and structure for FinFET isolation
First Claim
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1. A semiconductor device, comprising:
- a substrate having first and second fins extending lengthwise generally along a same line;
a first gate stack over the substrate and engaging the first fin;
a second gate stack over the substrate and engaging the second fin;
a first isolation structure disposed between the first and second fins; and
spacer features on sidewalls of the first and second gate stacks and on sidewalls of an upper portion of the first isolation structure.
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Abstract
A semiconductor device includes a substrate having first and second fins extending lengthwise generally along a same line; a first gate stack over the substrate and engaging the first fin; a second gate stack over the substrate and engaging the second fin; a first isolation structure disposed between the first and second fins; and spacer features on sidewalls of the first and second gate stacks and on sidewalls of an upper portion of the first isolation structure.
17 Citations
20 Claims
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1. A semiconductor device, comprising:
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a substrate having first and second fins extending lengthwise generally along a same line; a first gate stack over the substrate and engaging the first fin; a second gate stack over the substrate and engaging the second fin; a first isolation structure disposed between the first and second fins; and spacer features on sidewalls of the first and second gate stacks and on sidewalls of an upper portion of the first isolation structure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A semiconductor device, comprising:
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a substrate having first and second fins extending lengthwise generally along a same direction; a first isolation structure over the substrate, wherein the first and second fins protrude above a top surface of the first isolation structure; first and second gate stacks over the top surface of the first isolation structure and engaging the first and second fins respectively; a second isolation structure disposed between the first and second fins and between the first and second gate stacks; and spacer features on sidewalls of the first and second gate stacks and on sidewalls of an upper portion of the second isolation structure. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A semiconductor device, comprising:
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a substrate having first and second fins extending lengthwise generally along a same direction, wherein a first end of the first fin is adjacent to a first end of the second fin; a first gate stack over the substrate and engaging the first fin; a second gate stack over the substrate and engaging the second fin; a first isolation structure over a second end of the first fin from a top view; a second isolation structure over a second end of the second fin from the top view; and a third isolation structure adjacent to both the first end of the first fin and the first end of the second fin from the top view. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification