PATENT CLAIM ANALYSIS

Application Number: 15997130
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2019-05
Patent Classification: ["257", "192000"]

Abstract:
The present disclosure describes a method to form silicon germanium (SiGe) source/drain epitaxial stacks with a boron doping profile and a germanium concentration that can induce external stress to a fully strained SiGe channel. The method includes forming one or more gate structures over a fin, where the fin includes a fin height, a first sidewall, and a second sidewall opposite to the first sidewall. The method also includes forming a first spacer on the first sidewall of the fin and a second spacer on the second sidewall of the fin; etching the fin to reduce the fin height between the one or more gate structures; and etching the first spacer and the second spacer between the one or more gate structures so that the etched first spacer is shorter than the etched second spacer and the first and second etched spacers are shorter than the etched fin. The method further includes forming an epitaxial stack on the etched fin between the one or more gate structures.

Claim (Index 8):
A method comprising:\n forming gate structures over a fin, wherein the fin has a first fin height; forming a spacer stack on a sidewall of the fin, wherein the spacer stack has a spacer height; selectively recessing the fin between the gate structures to decrease the first fin height to a second fin height, wherein the second fin height is shorter than the spacer height; and forming, between the gate structures, an epitaxial stack on the fin.

Metadata:
- Claim Count in Document: 22.0
- Percentile: 94.0
- Lexical Diversity: 2.69697
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15285035', '15994720', '15809122', '14739008', '15718740']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9157815986942576
- 35 USC 102 Novelty (BERT): 0.4880783586598706
- Combined Prediction Score: 0.8730112746908189
- Mean Citation Score: 213.299998
- Max Citation Score: 216.76755
- Similarity Product: 158.42081296336056

Labels:
- Claim Label 101: 1
- Claim Label 102: 0
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 0
- Label 101 Adjusted: 1

Dataset: test