PATENT CLAIM ANALYSIS

Application Number: 16245886
Application Type: Utility
Filing Date: 2019-01
Publication Date: 2019-05
Patent Classification: ["257", "077000"]

Abstract:
A method for manufacturing a semiconductor device having an SiC-IGBT and an SiC-MOSFET in a single semiconductor chip, including forming a second conductive-type SiC base layer on a substrate, and selectively implanting first and second conductive-type impurities into surfaces of the substrate and base layer to form a collector region, a channel region in a surficial portion of the SiC base layer, and an emitter region in a surficial portion of the channel region, the emitter region serving also as a source region of the SiC-MOSFET.

Claim (Index 1):
A semiconductor device having an SiC-IGBT and an SiC-MOSFET in a single semiconductor chip, comprising:\n a first conductive-type SiC base layer having a first surface and a second surface, the second surface of the first conductive-type SiC base layer being on a first conductive-type SiC substrate, the first conductive-type SiC substrate having a first surface facing the second surface of the SiC base layer and a second surface opposite the first surface of the SiC substrate and defining a drain region of the SiC-MOSFET; a trench etched in the second surface of the SiC substrate, the trench dividing the SiC substrate into a plurality of first conductive-type regions; a second conductive-type region in a bottom surface of the trench so as to form a collector region in the bottom surface; a second conductive-type region in the first surface of the SiC base layer so as to form a channel region in a surficial portion of the SiC base layer; a first conductive-type region in the first surface of the SiC base layer so as to form an emitter region in a surficial portion of the channel region, the emitter region serving also as a source region of the SiC-MOSFET; and a second conductive-type region in the first surface of the SiC base layer so as to form a channel contact region in a surficial portion of the SiC base layer, the channel contact region penetrating the emitter region and contacting with the channel region, wherein a first unit including the channel region, the emitter region and the channel contact region faces a second unit including a plurality of collector region and the plurality of the first conductive-type regions in the thickness direction of the SiC base layer.

Metadata:
- Claim Count in Document: 3.0
- Percentile: 99.0
- Lexical Diversity: 2.0
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14236567', '15442170', '15226913', '13372807', '10927434']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9415901721466552
- 35 USC 102 Novelty (BERT): 0.5969215540637973
- Combined Prediction Score: 0.9071233103383692
- Mean Citation Score: 423.29554
- Max Citation Score: 509.76178
- Similarity Product: 487.0096274943352

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