PATENT CLAIM ANALYSIS

Application Number: 15918387
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2019-03
Patent Classification: ["257", "331000"]

Abstract:
A semiconductor device includes a drain layer, a drift layer, a base region, a source region, trenches, base contact region, gate regions, and field plate electrodes. The drain layer extends in a first and a second direction. The drift layer is on the drain layer. The base region is on the drift layer. The source region is on the base region. The trenches are in an array and each trench reaches the drift layer from the source region. The base contact region is along the second direction in a region in which the trenches do not contiguously exist along the second direction and electrically connects the source region to the base region. Each gate regions is along an inner wall of the trenches. Each field plate electrodes is in an inside of the gate regions and is longer than the gate regions in the third direction.

Claim (Index 1):
A semiconductor device comprising:\n a drain layer of a first conductivity type extending in a first direction and a second direction crossing the first direction; a drift layer of the first conductivity type formed on a surface that is one surface perpendicular to a third direction crossing the first direction and the second direction of the drain layer; a base region of a second conductivity type formed on a surface of the drift layer; a source region of the first conductivity type formed on a surface of the base region; a plurality of trenches formed in an array in the first direction and the second direction, the trenches each reaching the drift layer through the base region along the third direction from a surface of the source region; a base contact region of the second conductivity type formed along the second direction in a region in which the trenches do not contiguously exist along the second direction between the trenches along the first direction, the base contact region being formed in the source region to electrically connect the source region to the base region being separate from the trenches; a plurality of gate regions each formed along an inner wall of corresponding one of the trenches, via an insulating film, inside the corresponding one of the trenches; a plurality of field plate electrodes each formed in an adjacent from corresponding one of the gate regions, via the insulating film, inside the corresponding one of the trenches along the third direction, and formed longer than the corresponding one of the gate regions in the third direction; a plurality of first source contacts each formed on the base contact region and the source region along the second direction between the trenches along the first direction, the first source contacts electrically connect the base contact region to the source region; a plurality of second source regions on each of the field plate electrode connected the corresponding one of the field plate electrodes; and a plurality of gate contacts on the corresponding one of the gate regions, electrically connected the corresponding gate region.

Metadata:
- Claim Count in Document: 28.0
- Percentile: 90.0
- Lexical Diversity: 3.0
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['13053069', '15916447', '14762967', '13205845', '12385715']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9092831461876834
- 35 USC 102 Novelty (BERT): 0.4506320526466526
- Combined Prediction Score: 0.8634180368335803
- Mean Citation Score: 155.19901000000004
- Max Citation Score: 157.80301
- Similarity Product: 135.24270912245632

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test