PATENT CLAIM ANALYSIS

Application Number: 15901006
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-12
Patent Classification: ["257", "076000"]

Abstract:
According to one embodiment, a semiconductor device includes first, second and third electrodes, first, second, third, and fourth semiconductor regions, and an insulating portion. The first electrode includes first and second electrode portions. The first semiconductor region includes first, second, and third semiconductor portions. The first semiconductor portion is provided between the first electrode portion and the second electrode. The second semiconductor portion is provided between the second electrode portion and the third electrode. The third semiconductor portion is provided between the first and second semiconductor portions. The second semiconductor region is provided between the first semiconductor portion and the second electrode. The third semiconductor region is positioned between the second semiconductor region and the third electrode. The insulating portion includes first and second insulating regions. At least a portion of the fourth semiconductor region is provided between the second semiconductor region and the second electrode.

Claim (Index 20):
A method for manufacturing a semiconductor device, comprising:\n preparing a stacked body including a first semiconductor film and a third semiconductor film, the third semiconductor film being provided on the first semiconductor film, the first semiconductor film including Al x1 Ga 1\u2212x1 N (0\u2264 x 1<1), the third semiconductor film including Al x3 Ga 1\u2212x3 N (0<x3<1 and x1<x3), the first semiconductor film including a first concentration of a first impurity of a first conductivity type; forming a first semiconductor region from the first semiconductor film and forming a third semiconductor region from the third semiconductor film by forming a first hole and a second hole reaching the first semiconductor film from an upper surface of the third semiconductor film; forming a first insulating film on a bottom surface and a side surface of the first hole; forming a second semiconductor region in the second hole, the second semiconductor region including Al x2 Ga 1\u2212x2 N (0\u2264x2<1 and x2<x3), the second semiconductor region not including an impurity, or a second concentration of the first impurity in the second semiconductor region being lower than the first concentration; forming a fourth semiconductor region on the second semiconductor region, the fourth semiconductor region including Al x4 Ga 1\u2212x4 N (0\u2264x4<1), a fourth concentration of the first impurity in the fourth semiconductor region being higher than the second concentration; and forming a second electrode, a third electrode, and a first electrode, the second electrode being electrically connected to the fourth semiconductor region, the third electrode being provided in a remaining space of the first hole, the first electrode being electrically connected to the first semiconductor region.

Metadata:
- Claim Count in Document: 3.0
- Percentile: 88.0
- Lexical Diversity: 5.15625
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15893932', '15439278', '15670445', '15690448', '15899925']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9219056952386552
- 35 USC 102 Novelty (BERT): 0.5078867492086448
- Combined Prediction Score: 0.8805038006356543
- Mean Citation Score: 261.954906
- Max Citation Score: 277.60986
- Similarity Product: 193.25123845182893

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