PATENT CLAIM ANALYSIS

Application Number: 15924944
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2019-09
Patent Classification: ["365", "163000"]

Abstract:
A phase change memory device includes first conductive rails laterally extending along a first horizontal direction over a substrate, a rectangular array of memory pillar structures overlying top surfaces of the first conductive rails, and second conductive rails laterally extending along a second horizontal direction and overlying top surfaces of the rectangular array of memory pillar structures. Each memory pillar structure includes a vertical stack of structural elements including, from one end to another, a selector-side conductive element, a selector element, a selector-memory conductive element, a phase change memory element, and a memory-side conductive element. At least one structural element within the vertical stack is a laterally constricted structural element having laterally recessed sidewalls relative to sidewalls of a respective immediately vertically underlying structural element.

Claim (Index 14):
A method of forming a phase change memory device, comprising:\n forming first rail stacks laterally extending along a first horizontal direction and spaced by first trenches over a substrate, wherein each of the first rail stacks comprises a first conductive rail and a first array level rail stack that includes a first selector-side conductive rail, a first selector rail, a first selector-memory conductive rail, a first phase change memory rail, and a first memory-side conductive rail; laterally recessing at least one rail within each first array level rail stack to form laterally recessed rails; forming vertical stacks of a first dielectric isolation structure and a first sacrificial rail between the first rail stacks; forming a conductive material layer over the first rail stacks; dividing the conductive material layer and the first array level rail stacks with second trenches, wherein second conductive rails and a rectangular array of first memory pillar structures are formed, and the second conductive rails laterally extend along a second horizontal direction and overlies top surfaces of the rectangular array of first memory pillar structures; removing remaining portions of the first sacrificial rails; and forming a continuous cavity-containing dielectric material portion in volumes of the second trenches and volumes formed by removal of the remaining portions of the first sacrificial rails.

Metadata:
- Claim Count in Document: 17.0
- Percentile: 90.0
- Lexical Diversity: 2.26667
- Patent Class: 365.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15898571', '15901633', '15888645', '15793178', '15843777']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8414006487391992
- 35 USC 102 Novelty (BERT): 0.5622864876675592
- Combined Prediction Score: 0.8134892326320352
- Mean Citation Score: 405.408834
- Max Citation Score: 475.98416
- Similarity Product: 396.6885236010456

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

Dataset: test