PATENT CLAIM ANALYSIS

Application Number: 15904634
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-10
Patent Classification: ["257", "577000"]

Abstract:
A semiconductor device and a method of manufacturing the same are provided so as to suppress an increase in the forward voltage of a first diode even if a driving signal is inputted to the gate electrode of an insulating gate bipolar transistor. An IGBT has a p-type body region. An anode region of the first diode has the same impurity region as the p-type body region of the IGBT. An anode region of a second diode is surrounded by an emitter groove and thus the anode region is separated from the p-type body region of the IGBT by the emitter groove.

Claim (Index 16):
A method of manufacturing a semiconductor device, comprising the steps of:\n preparing a semiconductor substrate having a first major surface, a second major surface opposite from the first major surface, and an emitter groove surrounding an anode formation region over the first major surface; forming an emitter groove electrode embedded in the emitter groove; forming an insulating gate bipolar transistor having a body region of a first conductivity type over the semiconductor substrate, an emitter region of a second conductivity type, the emitter region being arranged over the body region and near the first major surface so as to be electrically coupled to the emitter groove electrode, and a collector region of the first conductivity type, the collector region being arranged over the body region and near the second major surface; forming a first anode region of the first conductivity type, the first anode region including the same impurity region as the body region; forming a second anode region of the first conductivity type, the second anode region being arranged over the anode formation region so as to be separated from the first anode region by the emitter groove; forming a cathode region of the second conductivity type, the cathode region being arranged over the second major surface so as to include a first diode with the first anode region and include a second diode with the second anode region; and forming an electrode that is arranged over the second major surface and is in contact with the collector region and the cathode region.

Metadata:
- Claim Count in Document: 22.0
- Percentile: 88.0
- Lexical Diversity: 2.07843
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15791760', '15337405', '15109597', '13205845', '15416478']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.924634621165692
- 35 USC 102 Novelty (BERT): 0.5013687227517467
- Combined Prediction Score: 0.8823080313242975
- Mean Citation Score: 278.299492
- Max Citation Score: 294.1207
- Similarity Product: 256.87533432409765

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