PATENT CLAIM ANALYSIS

Application Number: 15863754
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-07
Patent Classification: ["257", "316000"]

Abstract:
Flash memory devices and fabrication methods thereof are provided. An exemplary method includes providing discrete bit lines on a semiconductor substrate, a first dielectric layer on top surfaces of the bit lines, and a floating gate structure on the first dielectric layer, trenches being formed between adjacent bit lines and on the semiconductor substrate; forming a sacrificial layer with a top surface above the top surfaces of the bit lines in the trenches; forming a second dielectric layer on top and side surfaces of the floating gate structure and the top surface of the sacrificial layer; forming a control gate structure on the second dielectric layer; removing portions of the second dielectric layer, the floating gate structure and the first dielectric layer to expose a portion of the sacrificial layer; and removing the sacrificial layer from the adjacent bit lines and the semiconductor substrate, thereby forming air gaps.

Claim (Index 12):
The method according to  claim 1 , wherein forming the sacrificial layer comprises:\n providing the bit lines on the semiconductor substrate, the first dielectric layer on the top surface of the bit lines and the floating gate structure on the first dielectric layer; and forming insolation structures covering side surfaces of the bit lines on the semiconductor substrate exposed by the bit lines, wherein the isolation structures are used as the sacrificial layer.

Metadata:
- Claim Count in Document: 37.0
- Percentile: 86.0
- Lexical Diversity: 2.80702
- Patent Class: 257.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['14494873', '11728504', '11871877', '14825408', '14825506']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9271102977610776
- 35 USC 102 Novelty (BERT): 0.4886269004642132
- Combined Prediction Score: 0.8832619580313911
- Mean Citation Score: 232.541592
- Max Citation Score: 238.10461
- Similarity Product: 191.7743099214029

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