PATENT CLAIM ANALYSIS

Application Number: 15885359
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2019-02
Patent Classification: ["257", "302000"]

Abstract:
In a method, a fin structure, in which first semiconductor layers and second semiconductor layers are alternately stacked, is formed. A sacrificial gate structure is formed over the fin structure. The first semiconductor layers are etched at a source/drain region of the fin structure, which is not covered by the sacrificial gate structure, thereby forming a first source/drain space in which the second semiconductor layers are exposed. A dielectric layer is formed at the first source/drain space, thereby covering the exposed second semiconductor layers. The dielectric layer and part of the second semiconductor layers are etched, thereby forming a second source/drain space. A source/drain epitaxial layer is formed in the second source/drain space. At least one of the second semiconductor layers is in contact with the source/drain epitaxial layer, and at least one of the second semiconductor layers is separated from the source/drain epitaxial layer.

Claim (Index 3):
The method of  claim 1 , further comprising, after the source/drain epitaxial layer is formed:\n removing the sacrificial gate structure, thereby exposing a part of the fin structure; removing the first semiconductor layers from the exposed fin structure, thereby forming channel layers including the second semiconductor layers; and forming a gate dielectric layer and a gate electrode layer around the channel layers.

Metadata:
- Claim Count in Document: 33.0
- Percentile: 86.0
- Lexical Diversity: 3.26531
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15800940', '15801200', '15653068', '15725655', '15707634']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.931357033493955
- 35 USC 102 Novelty (BERT): 0.5233641707678341
- Combined Prediction Score: 0.890557747221343
- Mean Citation Score: 335.61363399999993
- Max Citation Score: 354.50287000000014
- Similarity Product: 351.61243149721685

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