Intergrated circuit structure including single diffusion break abutting end isolation region, and methods of forming same
First Claim
1. A method of forming an integrated circuit (IC) structure, the method comprising:
- providing a structure including;
a plurality of fins positioned on a substrate,a plurality of shallow trench isolations (STIs) each positioned on the substrate laterally adjacent to one of the plurality of fins, anda masking layer positioned on the plurality of fins and the plurality of STIs;
forming a first trench in the masking layer to expose the plurality of fins, wherein the first trench extends transversely across the plurality of fins;
forming a second trench within the masking layer to expose one of the plurality of STIs, the second trench extending substantially in parallel with the plurality of fins, and wherein the second trench is positioned at a lateral end of the first trench;
forming a first opening within at least one of the exposed fins of the first trench to expose the substrate thereunder;
forming a second opening within the exposed one of the plurality of STIs of the second trench without exposing the substrate thereunder; and
forming an insulator on the exposed substrate and the exposed one of the plurality of STIs.
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Accused Products
Abstract
The disclosure provides integrated circuit (IC) structures with single diffusion break (SDB) abutting end isolation regions, and methods of forming the same. An IC structure may include: a plurality of fins positioned on a substrate; a plurality of gate structures each positioned on the plurality of fins and extending transversely across the plurality of fins; an insulator region positioned on the plurality of fins and laterally between the plurality of gate structures; at least one single diffusion break (SDB) positioned within the insulator region and one of the plurality of fins, the at least one SDB region extending from an upper surface of the substrate to an upper surface of the insulator region; and an end isolation region abutting a lateral end of the at least one SDB along a length of the plurality of gate structures, the end isolation region extending substantially in parallel with the plurality of fins.
38 Citations
14 Claims
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1. A method of forming an integrated circuit (IC) structure, the method comprising:
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providing a structure including; a plurality of fins positioned on a substrate, a plurality of shallow trench isolations (STIs) each positioned on the substrate laterally adjacent to one of the plurality of fins, and a masking layer positioned on the plurality of fins and the plurality of STIs; forming a first trench in the masking layer to expose the plurality of fins, wherein the first trench extends transversely across the plurality of fins; forming a second trench within the masking layer to expose one of the plurality of STIs, the second trench extending substantially in parallel with the plurality of fins, and wherein the second trench is positioned at a lateral end of the first trench; forming a first opening within at least one of the exposed fins of the first trench to expose the substrate thereunder; forming a second opening within the exposed one of the plurality of STIs of the second trench without exposing the substrate thereunder; and forming an insulator on the exposed substrate and the exposed one of the plurality of STIs. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of forming an integrated circuit (IC) structure, the method comprising:
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providing a structure including; a plurality of fins positioned on a substrate, a plurality of shallow trench isolations (STIs) each positioned on the substrate laterally adjacent to one of the plurality of fins, and a set of gate structures positioned on the plurality of fins and extending transversely across the plurality of fins; removing the set of gate structures from the structure; forming a gate coating on the structure, after removing the set of gate structures; forming a masking layer on the gate coating, after removing the set of gate structures; forming a first trench within the masking layer to expose a portion of one of the plurality of fins, the first trench extending transversely across the plurality of fins; forming a second trench within the masking layer to expose one of the plurality of STIs, the second trench extending substantially in parallel with the plurality of fins, and positioned at a lateral end of the first trench; forming a first opening within the exposed portion of one of the plurality fins, within the first trench to expose the substrate thereunder; forming a second opening within the exposed one of the plurality of STIs of the second trench without exposing the substrate thereunder; and forming an insulator on the exposed substrate and the exposed one of the plurality of STIs. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification