PATENT CLAIM ANALYSIS

Application Number: 16009450
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2019-12
Patent Classification: ["257", "522000"]

Abstract:
Negatively sloped isolation structures are formed on a semiconductor substrate to isolate devices from one another. The negatively sloped isolation structures have a top critical dimension which is smaller than a bottom critical dimension. The negatively sloped isolation structures may penetrate through an insulator layer of a silicon-on-insulator structure arrangement.

Claim (Index 22):
A method comprising:\n forming an insulating layer over a substrate; forming a semiconductor material layer over the insulating layer; depositing a mask layer over the semiconductor material layer; patterning the mask layer; using the insulating layer as a first etch stop, performing a first etch to form a trench in the semiconductor material layer corresponding to the pattern of the mask layer; using the substrate as a second etch stop, performing a second etch to extend the trench through the semiconductor material layer; performing a third etch, the third etch widening a bottom of the trench, wherein following the third etch a ratio of a first width of the trench to a second width of the trench is between 0.6 and 0.95, the first width corresponding to a width of the trench at a top of the trench, the second width corresponding to a width of the trench at the bottom of the trench; and forming a first isolation structure in the trench, the first isolation structure having negatively sloped sidewalls.

Metadata:
- Claim Count in Document: 38.0
- Percentile: 94.0
- Lexical Diversity: 1.39474
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14874879', '12065622', '15888906', '13210086', '12949870']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9072407141180628
- 35 USC 102 Novelty (BERT): 0.4625794991564356
- Combined Prediction Score: 0.8627745926219
- Mean Citation Score: 154.46623200000005
- Max Citation Score: 156.12866
- Similarity Product: 122.06600710402964

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