PATENT CLAIM ANALYSIS

Application Number: 16015091
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2018-11
Patent Classification: ["438", "270000"]

Abstract:
A trench-type metal-oxide-semiconductor field-effect transistor (MOSFET) device and a fabrication method are disclosed. A semiconductor substrate of a first conductivity type is provided. A plurality of first trenches arranged side by side in a first stripe layout extending along a first direction in a first preset area of the semiconductor substrate are formed. A plurality of second trenches arranged side by side in a second stripe layout extending along a second direction perpendicular to the first direction in a second preset area of the semiconductor substrate are formed. The plurality of first trenches and the plurality of second trenches are filled with a conductive material so as to form a plurality of control gates.

Claim (Index 6):
The method of  claim 3 , wherein the step of filling the plurality of first trenches and the plurality of second trenches with the conductive material so as to form the plurality of control gates comprises:\n depositing the conductive material on the semiconductor substrate so that the plurality of first trenches and the plurality of second trenches are filled with the conductive material; etching away an excessive portion of the conductive material so that a plurality of shield gates are formed from a remaining portion of the conductive material in lower portions of the plurality of first trenches and the plurality of second trenches; depositing an insulation material on the semiconductor substrate so that the plurality of first trenches and the plurality of second trenches are filled with the insulation material; etching away an excessive portion of the insulation material so as to form an insulation interlayer on the plurality of shield gates; growing another insulation layer on a top surface of the semiconductor substrate and on exposed sidewalls at top portions of the plurality of first trenches and the plurality of second trenches; depositing the conductive material on the semiconductor substrate so that the plurality of first trenches and the plurality of second trenches are filled with the conductive material; and etching away another excessive portion of the conductive material so that the plurality of control gates are formed from another remaining portion of the conductive material in the plurality of first trenches and the plurality of second trenches.

Metadata:
- Claim Count in Document: 17.0
- Percentile: 94.0
- Lexical Diversity: 2.32692
- Patent Class: 438.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['15197780', '12656038', '10832776', '14455877', '14291967']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8482263190779764
- 35 USC 102 Novelty (BERT): 0.5254122470456787
- Combined Prediction Score: 0.8159449118747467
- Mean Citation Score: 228.81565200000009
- Max Citation Score: 310.91446
- Similarity Product: 228.8411414651441

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