PATENT CLAIM ANALYSIS

Application Number: 16005161
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2019-12
Patent Classification: ["257", "330000"]

Abstract:
A semiconductor device and methods for forming the same are provided. The method includes providing a substrate having a first conductive type, forming an epitaxial layer having the first conductive type on the substrate, forming a trench in the epitaxial layer, forming a first insulating layer in the trench and on the top surface of the epitaxial layer, forming a shield electrode and a mask layer on the first insulating layer in order, using the mask layer to remove a portion of the first insulating layer, wherein the top surface of the first insulating layer is higher than the top surface of the shield electrode after removing the portion of the first insulating layer, removing the mask layer, forming a second insulating layer on the first insulating layer and the shield electrode, and forming a gate electrode on the second insulating layer.

Claim (Index 11):
A semiconductor device, comprising:\n a substrate having a first conductive type; an epitaxial layer having the first conductive type disposed on the substrate, and a trench is in the epitaxial layer; a well region disposed on the epitaxial layer and having a second conductive type that is different from the first conductive type; a heavily doped region disposed on the well region and having the first conductive type; a shield electrode disposed in the trench, wherein the shield electrode is separated from the epitaxial layer by a first insulating layer, and the top surface of the first insulating layer is higher than the top surface of the shield electrode; and a gate electrode disposed in the trench and over the shield electrode, wherein the gate electrode is separated from the epitaxial layer and the shield electrode by a second insulating layer, wherein the second insulating layer forms a stepped upper surface on the first insulating layer and the shield electrode, and the gate electrode has a stepped bottom surface in contact with the stepped upper surface of the second insulating layer, and the stepped upper surface of the second insulating layer has a curved middle portion vertically overlapped with the shield electrode.

Metadata:
- Claim Count in Document: 26.0
- Percentile: 94.0
- Lexical Diversity: 3.12245
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['11202981', '12207417', '15090966', '14555518', '11022890']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9187801547278184
- 35 USC 102 Novelty (BERT): 0.4855836231792437
- Combined Prediction Score: 0.8754605015729611
- Mean Citation Score: 223.66673
- Max Citation Score: 227.28972
- Similarity Product: 176.61832606763363

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