PATENT CLAIM ANALYSIS

Application Number: 16016510
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2019-02
Patent Classification: ["257", "622000"]

Abstract:
A new semiconductor rectifier structure. In general, a MOS-transistor-like structure is located above a JFET-like deeper structure. The present application teaches ways to combine and optimize these two structures in a merged device so that the resulting combined structure achieves both a low forward voltage and a high reverse breakdown voltage in a relatively small area. In one class of innovative implementations, an insulated (or partially insulated) trench is used to define a vertical channel in a body region along the sidewall of a trench, so that majority carriers from a “source” region (typically n+) can flow through the channel. An added “pocket” diffusion, of the same conductivity type as the body region (p-type in this example), provides an intermediate region around the bottom of the trench. This intermediate diffusion, and an additional deep region of the same conductivity type, define a deep JFET-like device which is in series with the MOS channel portion of the diode. This advantageously permits the MOS channel portion to be reasonably short, and to have a reasonably low threshold voltage, since the high-voltage withstand characteristics are defined by the deep JFET-like device.

Claim (Index 13):
The semiconductor rectifier device of  claim 11 , wherein the second metallization layer is ohmically connected to the drift region through a drain contact region which has the first conductivity type, and is more heavily doped than the drift region.

Metadata:
- Claim Count in Document: 45.0
- Percentile: 94.0
- Lexical Diversity: 1.84483
- Patent Class: 257.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['11982764', '12238308', '10146539', '11982792', '11982781']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9295990579519632
- 35 USC 102 Novelty (BERT): 0.5088003739295763
- Combined Prediction Score: 0.8875191895497244
- Mean Citation Score: 236.687304
- Max Citation Score: 243.55795
- Similarity Product: 150.0473168781966

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