PATENT CLAIM ANALYSIS

Application Number: 15867036
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2019-07
Patent Classification: ["257", "350000"]

Abstract:
Disclosed are methods for forming an integrated circuit with a nanowire-type field effect transistor and the resulting structure. A sacrificial gate is formed on a multi-layer fin. A sidewall spacer is formed with a gate section on the sacrificial gate and fin sections on exposed portions of the fin. Before or after removal of the exposed portions of the fin, the fins sections of the sidewall spacer are removed or reduced in size without exposing the sacrificial gate. Thus, the areas within which epitaxial source/drain regions are to be formed will not be bound by sidewall spacers. Furthermore, isolation material, which is deposited into these areas prior to epitaxial source/drain region formation and which is used to form isolation elements between the transistor gate and source/drain regions, can be removed without removing the isolation elements. Techniques are also disclosed for simultaneous formation of a nanosheet-type and/or fin-type field effect transistors.

Claim (Index 2):
The method of  claim 1 ,\n wherein the substrate comprises a first semiconductor material, wherein the forming of the semiconductor fin comprises forming a multi-layer semiconductor fin comprising alternating layers of a second semiconductor material and the first semiconductor material, wherein the removing of the second portions of the semiconductor fin exposes vertical surfaces of the first semiconductor material and the second semiconductor material, and wherein the forming of the first transistor further comprises:\n after the widening of the source/drain openings and before the forming of the source/drain regions, etching exposed surfaces of the second semiconductor material to form cavities in the first portion of the semiconductor fin; \n conformally depositing an isolation layer so that the isolation layer fills the cavities and is within the source/drain openings; and selectively and isotropically etching the isolation layer, wherein the etching of the isolation layer is performed until the isolation layer is completely removed from the source/drain openings and stopped prior to removal of the isolation layer from the cavities such that isolation elements remain in the cavities.

Metadata:
- Claim Count in Document: 17.0
- Percentile: 86.0
- Lexical Diversity: 1.95181
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15387933', '15658835', '15787009', '15715220', '15862064']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9327965891696492
- 35 USC 102 Novelty (BERT): 0.5329219262671131
- Combined Prediction Score: 0.8928091228793955
- Mean Citation Score: 353.47274199999987
- Max Citation Score: 374.74036
- Similarity Product: 320.05032530682087

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test