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 13):
The method of  claim 12 , further comprising,\n before the forming of the nanosheet stacks on the substrate:\n forming a sacrificial silicon germanium (SiGe) layer on the substrate such that the sacrificial SiGe layer is between the substrate and each nanosheet stack, each nanosheet stack comprising alternating sheets of silicon germanium (SiGe) and silicon (Si); \n before the growing of the S/D epitaxy structure:\n removing the sacrificial SiGe layer; \n partially indenting the SiGe layers of each nanosheet stack; \n depositing an oxide layer on the substrate; \n isotropically recessing the oxide layer to a level below a lowest Si layer of each nanosheet stack and no lower than a lowest indented SiGe layer of each nanosheet stack; \n depositing inner spacer material on the oxide layer and edges of the nanosheet stacks; \n recessing the inner spacer material to form inner spacers on edges of the SiGe layers of each nanosheet stack and an inner spacer layer on a top surface of the oxide layer; \n forming the isolation area via directional etching into the oxide layer; \n after the forming of the conformal or partially conformal contact layer:\n forming a conformal liner layer on at least a portion of an outer surface of the wrap-all-around contact such that the conformal liner layer pinches off a gap present between the wrap-all-around contact and an uppermost inner edge of a sidewall of the isolation area.

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): 0.9137780873131164
- 35 USC 102 Novelty (BERT): 0.5316975381737763
- Combined Prediction Score: 0.8755700323991825
- Mean Citation Score: 305.3313100000001
- Max Citation Score: 339.0741
- Similarity Product: 223.78232630501392

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