PATENT CLAIM ANALYSIS

Application Number: 15870267
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2019-07
Patent Classification: ["257", "347000"]

Abstract:
A method for fabrication a nanosheet device includes providing forming a stacked layer on a substrate, having first material layers and second material layers in different materials, alternatingly stacked up. The stacked layer is patterned to a stacked fin. A dummy stack is formed on the stacked fin. An etching back process is performed with the dummy stack with spacers to etch the stacked fin and expose the substrate. Laterally etches the first material layers and the second material layers, to have indent portions. Inner spacers fill the indent portions. A first/second source/drain layer is formed on the substrate at both sides of the dummy stack. Etching process is performed to remove the dummy gate of the dummy stack and the selected one of the first material layers and the second material layers between the inner spacers. Metal layer fills between the spacers and the inner spacers.

Claim (Index 1):
A method for fabricating nanosheet device, comprising:\n providing a substrate; forming a stacked layer on the substrate, having a plurality of first material layers and a plurality of second material layers in different materials, alternatingly stacked up; patterning the stacked layer to form a stacked fin; forming a dummy stack on the stacked fin, wherein the dummy stack comprises an insulating layer and a dummy gate sequentially stacked on the stacked fin and a pair of spacers on sidewalls of the dummy gate; performing an etching back process with the dummy stack serving as an etching mask to etch the stacked fin and expose the substrate; laterally etching a selected one of the first material layers and the second material layers, to have a pair of indent portions; forming a pair of inner spacers to fill the indent portions; forming a first source/drain layer and a second source/drain layer on the substrate at both sides of the dummy stack; performing an etching process to remove the dummy gate of the dummy stack and the selected one of the first material layers and the second material layers between the inner spacers; and forming a metal layer, filling between the spacers and the inner spacers.

Metadata:
- Claim Count in Document: 14.0
- Percentile: 86.0
- Lexical Diversity: 2.37313
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15007920', '15045759', '15847334', '15847296', '15730306']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9220910460140196
- 35 USC 102 Novelty (BERT): 0.4950104630293562
- Combined Prediction Score: 0.8793829877155533
- Mean Citation Score: 257.76234800000003
- Max Citation Score: 274.12817
- Similarity Product: 234.18520178138675

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