PATENT CLAIM ANALYSIS

Application Number: 15988018
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2019-01
Patent Classification: ["438", "270000"]

Abstract:
A manufacturing method of a trench power semiconductor device is provided. The manufacturing method includes the steps of forming a protective layer on an epitaxial layer and forming a trench gate structure in a trench formed in an epitaxial layer. The trench gate structure includes a shielding electrode, a gate disposed on the shielding electrode and an inter-electrode dielectric layer disposed therebetween. The step of forming the trench gate structure includes forming an insulating layer covering an inner surface of the trench; and before the step of forming the inter-electrode dielectric layer, forming an initial spacing layer, the spacing layer including a first sidewall portion and a second sidewall portion, both of which include bottom end portions spaced apart from each other and extending portions protruding from the protective layer.

Claim (Index 13):
The manufacturing method of a trench power semiconductor device according to  claim 12 , further comprising:\n forming a wire redistribution layer on the surface of the epitaxial layer, wherein the wire redistribution layer includes an interlayer dielectric layer on the epitaxial layer, a source conductive layer on the interlayer dielectric layer, and at least one conductive pillar penetrates the interlayer dielectric layer, and the source metal layer electrically connects with the source area through the conductive pillar.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 93.0
- Lexical Diversity: 2.27869
- Patent Class: 438.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15975023', '15090966', '15005130', '14994250', '15186685']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8616540415804766
- 35 USC 102 Novelty (BERT): 0.4970148258200428
- Combined Prediction Score: 0.8251901200044333
- Mean Citation Score: 232.767146
- Max Citation Score: 257.19028
- Similarity Product: 197.1734465982724

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

Dataset: test