PATENT CLAIM ANALYSIS

Application Number: 16043674
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2019-01
Patent Classification: ["257", "331000"]

Abstract:
Trench gate power MOSFET with an on-region. Cells in the on-region include a first epitaxial layer and a channel region. First trenches corresponding to polysilicon gates penetrate through the channel region, and each polysilicon gate is etched to form a groove in the top, the grooves filled with an interlayer film. A source region formed on side faces of the grooves in a self-aligned mode through angled ion implantation. Through the source region of a side structure, the surface of a portion, between the first trenches, of the channel region is directly exposed and formed with a well contact region. A front metal layer is formed on the surfaces of the cells in the on-region and leads out a source. The front metal layer of the source directly makes contact with well contact region and source region to form a connection structure without contact holes.

Claim (Index 15):
The manufacturing method of the trench gate power MOSFET according to  claim 8 , wherein the trench gate power MOSFET is an N-type device, the first conduction type is N and the second conduction type is P; or, the trench gate power MOSFET is a P-type device, the first conduction type is P and the second conduction type is N.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 95.0
- Lexical Diversity: 2.24286
- Patent Class: 257.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['12137527', '14771089', '12458293', '13377029', '14019159']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9152224795604964
- 35 USC 102 Novelty (BERT): 0.5098586675526131
- Combined Prediction Score: 0.874686098359708
- Mean Citation Score: 249.28664
- Max Citation Score: 260.66483
- Similarity Product: 190.58554912671624

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