PATENT CLAIM ANALYSIS

Application Number: 15943696
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-10
Patent Classification: ["257", "330000"]

Abstract:
On a front surface of a semiconductor base, an n − -type drift layer, a p-type base layer, an n ++ -type source region, and a gate trench and a contact trench penetrating the n ++ -type source region and the p-type base layer and reaching the n − -type drift layer are provided. The contact trench is provided separated from the gate trench. A Schottky metal is embedded in the contact trench and forms a Schottky contact with the n − -type drift layer at a side wall of the contact trench. An ohmic metal is provided at a bottom of the contact trench and forms an ohmic contact with the n − -type drift layer.

Claim (Index 1):
A semiconductor device comprising:\n semiconductor substrate of a first conductivity type; a first semiconductor layer having a first sub-region of the first conductivity type provided on a front surface of the semiconductor substrate; a second semiconductor layer having a second sub-region of a second conductivity type, the second semiconductor layer provided on a first side of the first semiconductor layer opposite a second side of the first semiconductor layer facing the semiconductor substrate; a first semiconductor region of the first conductivity type selectively provided in the second semiconductor layer, an impurity concentration of the first semiconductor region being higher than an impurity concentration of the semiconductor substrate; a first trench penetrating the first semiconductor region and the second semiconductor layer, and reaching the first semiconductor layer; a gate electrode provided in the first trench, on a gate insulating film; an interlayer insulating film provided on the gate electrode; a first electrode in contact with the first semiconductor region and the second semiconductor layer; a second electrode provided on a rear surface of the semiconductor substrate; a second trench separated from the first trench, the second trench penetrating the first semiconductor region and the second semiconductor layer, and reaching the first semiconductor layer; and a metal electrode embedded in the second trench, the metal electrode forming a Schottky contact with the first semiconductor layer at a side wall of the second trench.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 91.0
- Lexical Diversity: 2.77778
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15846040', '15846075', '15841461', '15252623', '15477304']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.925326038749833
- 35 USC 102 Novelty (BERT): 0.5140451405658608
- Combined Prediction Score: 0.8841979489314358
- Mean Citation Score: 292.933736
- Max Citation Score: 331.4681700000001
- Similarity Product: 314.36607884760633

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