PATENT CLAIM ANALYSIS

Application Number: 15871296
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-07
Patent Classification: ["257", "330000"]

Abstract:
A semiconductor device can include: a substrate having a semiconductor material; a plurality of semiconductor layers of a first conductivity type, and being sequentially stacked on the substrate, where a doping concentration of the semiconductor layers successively increases from bottom to top; a trench that extends from the surface of a topmost semiconductor layer into a bottommost semiconductor layer of the semiconductor layers; a plurality of field plates that correspond to the semiconductor layers, each field plate being located in a portion of the trench that corresponds to one of the semiconductor layers; and a trench pad located in a bottom and a sidewall of the trench, and being filled each space between two adjacent field plates, where the thickness of the trench pad between each field plate and corresponding semiconductor layer sequentially decreases from the bottom to the top.

Claim (Index 10):
The method of  claim 9 , further comprising:\n a) forming a first oxide layer having a first thickness on a sidewall and a bottom of said trench; b) depositing a first polysilicon layer in said trench having said first oxide layer; c) etching said first polysilicon layer and said first oxide layer, wherein the remaining said first polysilicon layer is configured as said first field plate, and the remaining said first oxide layer is configured as a first portion of said trench pad; d) depositing a second oxide layer having a second thickness on said first field plate, the first portion of said trench pad, and the sidewalls of said trench; e) depositing a second polysilicon layer in said trench having said second oxide layer; and f) etching said second polysilicon layer and said second oxide layer, wherein the remaining said second polysilicon is configured as said second field plate, and the remaining said second oxide layer is configured as a second portion of said trench pad.

Metadata:
- Claim Count in Document: 29.0
- Percentile: 86.0
- Lexical Diversity: 2.43548
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14747681', '11375975', '15679195', '13673458', '13242970']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9114517310995768
- 35 USC 102 Novelty (BERT): 0.4825813616569862
- Combined Prediction Score: 0.8685646941553178
- Mean Citation Score: 183.004078
- Max Citation Score: 191.66199
- Similarity Product: 137.96947214268565

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