PATENT CLAIM ANALYSIS

Application Number: 16037985
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2020-01
Patent Classification: ["438", "009000"]

Abstract:
Generally, embodiments described herein relate to methods for manufacturing an interconnect structure for semiconductor devices, such as in a dual subtractive etch process. An embodiment is a method for semiconductor processing. A titanium nitride layer is formed over a substrate. A hardmask layer is formed over the titanium nitride layer. The hardmask layer is patterned into a pattern. The pattern is transferred to the titanium nitride layer, where the transferring comprises etching the titanium nitride layer. After transferring the pattern to the titanium nitride layer, the hardmask layer is removed, where the removal comprises performing an oxygen-containing ash process.

Claim (Index 15):
The method of  claim 8  further comprising:\n depositing a second ruthenium layer over the substrate; \n depositing a first titanium nitride layer over the second ruthenium layer, wherein the first ruthenium layer is deposited over the first titanium nitride layer; \n depositing a second titanium nitride layer over the first ruthenium layer; \n etching the second titanium nitride layer to form a line pattern, wherein etching the first ruthenium layer transfers the line pattern to the first ruthenium layer; \n simultaneously etching the second titanium nitride layer to form a via pattern and etching the first titanium nitride layer to transfer the line pattern to the first titanium nitride layer; \n simultaneously etching the first ruthenium layer to transfer the via pattern to the first ruthenium layer and etching the second ruthenium layer to transfer the line pattern to the second ruthenium layer, wherein a via is formed in the first ruthenium layer, and a line is formed in the second ruthenium layer; and \n depositing a dielectric layer on the line and the via.

Metadata:
- Claim Count in Document: 22.0
- Percentile: 95.0
- Lexical Diversity: 2.09434
- Patent Class: 438.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14543683', '11117854', '14603018', '15818947', '14533999']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8928397516360395
- 35 USC 102 Novelty (BERT): 0.4949940585640994
- Combined Prediction Score: 0.8530551823288455
- Mean Citation Score: 213.54447
- Max Citation Score: 220.2189
- Similarity Product: 143.98384455714225

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