Method and Structure for Mandrel and Spacer Patterning
First Claim
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1. A semiconductor device, comprising:
- a first active fin on a substrate;
a second active fin on the substrate and separate from the first active fin; and
a first fin stub on the substrate, wherein the first fin stub connects a first end of the first active fin and a first end of the second active fin, wherein the first fin stub is lower than both the first and second active fins in height,wherein from a top view the first active fin is oriented lengthwise in a first direction, and the first fin stub is oriented lengthwise in a second direction that is different from the first direction.
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Abstract
A semiconductor device includes a first active fin on a substrate; a second active fin on the substrate and separate from the first active fin; and a first fin stub on the substrate, wherein the first fin stub connects a first end of the first active fin and a first end of the second active fin, wherein the fin stub is lower than both the first and the second active fins in height, wherein from a top view the first active fin is oriented lengthwise in a first direction, and the first fin stub is oriented lengthwise in a second direction that is different from the first direction.
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Citations
20 Claims
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1. A semiconductor device, comprising:
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a first active fin on a substrate; a second active fin on the substrate and separate from the first active fin; and a first fin stub on the substrate, wherein the first fin stub connects a first end of the first active fin and a first end of the second active fin, wherein the first fin stub is lower than both the first and second active fins in height, wherein from a top view the first active fin is oriented lengthwise in a first direction, and the first fin stub is oriented lengthwise in a second direction that is different from the first direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A semiconductor device, comprising:
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first, second, and third active fins on a substrate and separate from each other; a first fin stub on the substrate, wherein the first fin stub connects a bottom portion of the first active fin and a bottom portion of the second active fin; a second fin stub on the substrate, wherein the second fin stub connects the bottom portion of the first active fin and a bottom portion of the third active fin; and an isolation feature over the first and the second fin stubs, wherein the isolation feature is higher than the first and the second fin stubs and lower than the first, second, and third active fins, wherein from a top view the first, second, and third active fins are oriented lengthwise in a first direction, the first fin stub is oriented lengthwise in a second direction that is different from the first direction, and the second fin stub is oriented lengthwise in a third direction that is different from the first and second directions. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A semiconductor device, comprising:
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a first active fin on a substrate and extending lengthwise in a first direction, the first active fin having a first end and a second end; a first fin stub on the substrate and physically contacting a bottom portion of the first end of the first active fin, the first fin stub extending lengthwise in a second direction different from the first direction; and a second fin stub on the substrate and physically contacting a bottom portion of the second end of the first active fin, the second fin stub extending lengthwise in a third direction different from either the first or the second directions, wherein the first active fin is higher than both the first and second fin stubs in height. - View Dependent Claims (17, 18, 19, 20)
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Specification