PATENT CLAIM ANALYSIS

Application Number: 16412447
Application Type: Utility
Filing Date: 2019-05
Publication Date: 2019-09
Patent Classification: ["257", "296000"]

Abstract:
A semiconductor structure includes a semiconductor substrate having a trench isolation region formed therein. A conductive gate electrode is buried in the trench isolation region. An air gap is disposed between the conductive gate electrode and the semiconductor substrate.

Claim (Index 1):
A method for fabricating a semiconductor structure, comprising:\n providing a semiconductor substrate having a major surface; forming a trench isolation region and an active area surrounded by the trench isolation region in the semiconductor substrate, wherein the active area has a longitudinal axis extending along a first direction; forming a first gate trench in the active area and a second gate trench in the trench isolation region; forming a sacrificial spacer in the second gate trench; forming a first gate electrode and a second gate electrode in the first gate trench and the second gate trench, respectively; removing the sacrificial spacer from the second gate trench, thereby forming an air gap between the second gate electrode and the semiconductor substrate in the second gate trench, wherein the air gap overlaps with an entire thickness of the second gate electrode along a thickness direction that is perpendicular to a top surface of the semiconductor substrate; and depositing a cap dielectric layer on the second gate electrode, wherein the cap dielectric layer seals the air gap.

Metadata:
- Claim Count in Document: 17.0
- Percentile: 100.0
- Lexical Diversity: 1.61538
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15655909', '15258588', '11772341', '13599844', '15209502']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9108594088767414
- 35 USC 102 Novelty (BERT): 0.470278206592487
- Combined Prediction Score: 0.8668012886483161
- Mean Citation Score: 198.358388
- Max Citation Score: 218.47694
- Similarity Product: 193.93650192112685

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

Dataset: test