PATENT CLAIM ANALYSIS

Application Number: 15888944
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-10
Patent Classification: ["257", "077000"]

Abstract:
In a vertical power MOSFET having a superjunction structure, the withstand voltage of the power MOSFET can be ensured even if the aspect ratios of an n-type column region and a p-type column region are increased so as to vary the impurity concentration of the p-type column region. P-type semiconductor regions PR 1  are formed on the sides of an n-type column NC 1  adjacent to a p-type column region PC 1 . In this configuration, the p-type semiconductor region PR 1  is formed from the upper end of the n-type column region NC 1  to about a half depth of a height from the upper end to the lower end of the side of the n-type column region NC 1 . This inclines the sides of the overall p-type column region including the p-type semiconductor regions PR 1  and the p-type column region PC 1.

Claim (Index 1):
A semiconductor device comprising:\n a semiconductor layer; a plurality of first pillars of a first conductivity type and a plurality of second pillars of a second conductivity type that is a reverse conductivity type of the first conductivity type, the first and second pillars being formed in the semiconductor layer; a semiconductor element formed over the semiconductor layer; and a first semiconductor region of the first conductivity type, the first semiconductor region being formed over a side of the second pillar, wherein the first pillars and the second pillars are alternately disposed in a first direction, wherein the first semiconductor region is formed over the side of the second pillar in the first direction, and wherein the first semiconductor region is formed from an upper end of the side of the second pillar to a certain depth of the second pillar.

Metadata:
- Claim Count in Document: 13.0
- Percentile: 88.0
- Lexical Diversity: 2.41935
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15869023', '14965899', '14826075', '15640375', '15355469']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9226909676585237
- 35 USC 102 Novelty (BERT): 0.4844815669995777
- Combined Prediction Score: 0.8788700275926289
- Mean Citation Score: 249.31818
- Max Citation Score: 261.54218
- Similarity Product: 244.83618372839445

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