PATENT CLAIM ANALYSIS

Application Number: 15990811
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2019-01
Patent Classification: ["438", "142000"]

Abstract:
A method of forming semiconductor memory device includes the following steps. Firstly, a substrate is provided and the substrate includes a cell region. Then, plural bit lines are disposed within the cell region along a first direction, with each of the bit line includes a tri-layered spacer structure disposed at two sides thereof. Next, plural of first plugs are formed within the cell region, with the first plugs being disposed at two sides of each bit lines. Furthermore, plural conductive patterns are formed in alignment with each first plugs. Following theses, a chemical reaction process is performed to modify the material of a middle layer of the tri-layered spacer structure, and a heat treatment process is performed then to remove the modified middle layer, thereto form an air gap layer within the tri-layered spacer structure.

Claim (Index 1):
A method of forming a semiconductor memory device, comprising:\n providing a substrate, the substrate comprising a periphery region and a memory cell region; forming a plurality of bit lines extended along a first direction on the substrate, within the memory cell region, wherein a spacer structure is formed at two sides of each of the bit lines and the spacer structure comprises a tri-layer structure; forming a plurality of first plugs on the substrate within the memory cell region, at two sides of each of the bit lines; forming a plurality of conductive patterns, the conductive patterns being in alignment and directly in contact with the first plugs; after forming the conductive patterns, performing a chemical reaction process, to transform a second spacer of the tri-layer structure of the spacer structure to form a transformed second spacer; and removing the transformed second spacer to form an air-gap layer in the spacer structure.

Metadata:
- Claim Count in Document: 8.0
- Percentile: 93.0
- Lexical Diversity: 2.11268
- Patent Class: 438.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15884415', '14506393', '15915026', '15925778', '15092076']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.855494693740713
- 35 USC 102 Novelty (BERT): 0.4740767214514851
- Combined Prediction Score: 0.8173528965117902
- Mean Citation Score: 197.796504
- Max Citation Score: 211.0297
- Similarity Product: 176.1998329183519

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