PATENT CLAIM ANALYSIS

Application Number: 16169796
Application Type: Utility
Filing Date: 2018-10
Publication Date: 2019-03
Patent Classification: ["257", "774000"]

Abstract:
For simplifying the dual-damascene formation steps of a multilevel Cu interconnect, a formation step of an antireflective film below a photoresist film is omitted. Described specifically, an interlayer insulating film is dry etched with a photoresist film formed thereover as a mask, and interconnect trenches are formed by terminating etching at the surface of a stopper film formed in the interlayer insulating film. The stopper film is made of an SiCN film having a low optical reflectance, thereby causing it to serve as an antireflective film when the photoresist film is exposed.

Claim (Index 11):
A manufacturing method of a semiconductor integrated circuit device according to  claim 10 ,\n wherein in the step (d), the first interconnect trench is formed by controlling an etching time of the first interlayer insulating film.

Metadata:
- Claim Count in Document: 26.0
- Percentile: 97.0
- Lexical Diversity: 1.76786
- Patent Class: 257.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['11453882', '12141195', '13081332', '13525195', '12141172']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9421771155013846
- 35 USC 102 Novelty (BERT): 0.6001817320946178
- Combined Prediction Score: 0.907977577160708
- Mean Citation Score: 486.80999
- Max Citation Score: 509.54678
- Similarity Product: 476.2255769735694

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