PATENT CLAIM ANALYSIS

Application Number: 15968968
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2019-11
Patent Classification: ["257", "384000"]

Abstract:
Various aspects of the disclosure include nanosheet-FET structures having a wrap-all-around contact where the contact wraps entirely around the S/D epitaxy structure, not just on the top and sides of the S/D epitaxy structure, thereby increasing contact area and ultimately allowing for improved S/D contact resistance. Other aspects of the disclosure include nanosheet-FET structures having a bottom isolation to reduce parasitic S/D leakage to the substrate.

Claim (Index 7):
A field effect transistor (FET) structure having a wrap-all-around contact, comprising:\n a substrate having at least two mandrel portions; a conformal oxide layer on the substrate, the conformal oxide layer having a thickness such that an isolation area between adjacent mandrel portions is present; a nanosheet stack over each mandrel portion; a gate structure over each nanosheet stack; a source/drain (S/D) epitaxy structure between adjacent nanosheet stacks, the S/D epitaxy structure having a shape that does not fill the isolation area and such that a gap is present between the S/D epitaxy structure and an uppermost edge of the oxide layer is present in the isolation area and on sidewalls of the mandrel portions; a conformal or partially conformal silicide layer formed all around the S/D epitaxy structure and thereby forming the wrap-all-around contact, the silicide layer having a thickness such that the silicide layer does not fill the gap; and a conformal liner layer formed on at least a portion of the silicide layer and having a thickness such that the gap is pinched off by the conformal liner layer.

Metadata:
- Claim Count in Document: 4.0
- Percentile: 93.0
- Lexical Diversity: 1.62791
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15888401', '15434205', '15657659', '15241772', '15868742']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9137433458448648
- 35 USC 102 Novelty (BERT): 0.5298836306845455
- Combined Prediction Score: 0.8753573743288329
- Mean Citation Score: 305.3313100000001
- Max Citation Score: 339.0741
- Similarity Product: 247.98243072084188

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