PATENT CLAIM ANALYSIS

Application Number: 15961568
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-08
Patent Classification: ["257", "494000"]

Abstract:
In a semiconductor device including a low lifetime region of a depth within a range on both sides sandwiching a p-n junction of a p-type semiconductor region bottom portion, the low lifetime region includes a central region that has a portion coinciding with the semiconductor region as seen from one main surface side and is selectively formed as far as the position of a contact end portion of a region of the coinciding portion with which the semiconductor region and a metal electrode are in contact, a peripheral region wherein the central region extends as far as the position of an outer peripheral end of the semiconductor region, and an expanded end portion region wherein the peripheral region extends as far as an outer peripheral end of the innermost of guard rings. Because of this, it is possible to reduce leakage current while maintaining high reverse recovery current resistance.

Claim (Index 1):
A semiconductor device, comprising:\n a first conductivity type semiconductor substrate including a second conductivity type semiconductor region on one main surface thereof; and a metal electrode in contact with a surface of the second conductivity type semiconductor region, wherein the semiconductor substrate includes\n an active region, and \n a junction termination structure region enclosing an outer periphery of the active region, \n wherein the active region includes a first region in which a lifetime of minority carriers is reduced, and a second region in which the lifetime of minority carriers is either not reduced or is less reduced compared to the first region, wherein each of the first region and the second region is separated in a depth direction from the metal electrode and is arranged in an in-plane direction substantially transverse to the depth direction, and wherein the second region alternates with the first region in a same plane as the first region.

Metadata:
- Claim Count in Document: 23.0
- Percentile: 91.0
- Lexical Diversity: 2.12329
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14103289', '09705648', '11080367', '15246595', '12367540']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9219693293743084
- 35 USC 102 Novelty (BERT): 0.5453373309460583
- Combined Prediction Score: 0.8843061295314836
- Mean Citation Score: 292.773642
- Max Citation Score: 404.89288
- Similarity Product: 337.87244733974927

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