PATENT CLAIM ANALYSIS

Application Number: 15971225
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2018-09
Patent Classification: ["257", "190000"]

Abstract:
The present invention relates generally to semiconductor devices and more particularly, to a structure and method of forming a fin using double trench epitaxy. The fin may be composed of a III-V semiconductor material and may be grown on a silicon, silicon germanium, or germanium substrate. A double trench aspect ratio trapping (ART) epitaxy method may trap crystalline defects within a first trench (i.e. a defective region) and may permit formation of a fin free of patterning defects in an upper trench (i.e. a fin mold). Crystalline defects within the defective region may be trapped via conventional aspect ratio trapping or three-sided aspect ratio trapping. Fin patterning defects may be avoided by utilizing a fin mold to grow an epitaxial fin and selectively removing dielectric material adjacent to a fin region.

Claim (Index 8):
A method comprising:\n forming a first dielectric layer on a substrate; removing a portion the first dielectric layer to form a first trench and expose an upper surface of the substrate; forming a second dielectric layer on the first dielectric layer; forming a hardmask above first portions of the second dielectric layer and the first dielectric layer; removing second portions of the second dielectric layer and the first dielectric layer selective to the hardmask down to the upper surface of the substrate; forming a support layer on the upper surface of the substrate, the support layer having a height extending at least to an upper surface of the second dielectric layer; removing one or more portions of the second dielectric layer to form one or more second trenches, leaving at least one remaining portion of the second dielectric layer above the first trench, and the at least one remaining portion of the second dielectric layer having a width greater than a width of the first trench; and forming an epitaxial layer between the first dielectric layer and the second dielectric layer, the epitaxial layer filling the first trench and the one or more second trenches.

Metadata:
- Claim Count in Document: 17.0
- Percentile: 93.0
- Lexical Diversity: 2.0137
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14693208', '15062237', '15849916', '15900479', '15387933']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9264065929892016
- 35 USC 102 Novelty (BERT): 0.5461499015784991
- Combined Prediction Score: 0.8883809238481314
- Mean Citation Score: 333.852706
- Max Citation Score: 408.28693
- Similarity Product: 316.4791120952856

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

Dataset: test