PATENT CLAIM ANALYSIS

Application Number: 15990254
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2019-04
Patent Classification: ["438", "675000"]

Abstract:
A method for fabricating a semiconductor device includes: forming a plurality of bit line structures over a semiconductor substrate; forming a line-type opening between the bit line structures; forming a sacrificial spacer on both sidewalls of the line-type opening; forming a line-type plug filling the line-type opening over the sacrificial spacer; forming a plurality of plug isolation openings that expose the sacrificial spacer by etching a portion of the line-type plug in a direction crossing the bit line structures; forming a plurality of air gaps by removing the exposed sacrificial spacer; removing a remaining line-type plug below the plug isolation openings to form a plurality of island-type plugs; and forming a plug isolation layer inside the plug isolation openings to isolate neighboring island-type plugs from each other.

Claim (Index 18):
The method of  claim 11 , wherein the forming of the line-type plug by filling the line-type opening over the sacrificial spacer includes:\n forming a polysilicon layer over the bit line structures to fill the line-type opening; and isolating the polysilicon layer to be exposed at the same level as upper surfaces of the bit line structures.

Metadata:
- Claim Count in Document: 20.0
- Percentile: 93.0
- Lexical Diversity: 2.34483
- Patent Class: 438.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['14516128', '14506393', '14137339', '14924476', '15142885']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8905683537874057
- 35 USC 102 Novelty (BERT): 0.5223524686870155
- Combined Prediction Score: 0.8537467652773667
- Mean Citation Score: 311.6443240000001
- Max Citation Score: 331.34152
- Similarity Product: 250.82810771192075

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