PATENT CLAIM ANALYSIS

Application Number: 16017417
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2019-12
Patent Classification: ["257", "427000"]

Abstract:
Back end of line (BEOL) metallization structures and methods according to aspects of the invention generally include forming an interconnect structure including a recessed via structure in an interlayer dielectric. The recessed via structure is lined with a liner layer and filled with a first metal such as copper, tungsten, aluminum, alloys thereof or mixtures thereof. The recessed portion is filled with a second metal such as tantalum, titanium, tungsten, cobalt, ruthenium, iridium, platinum, nitrides thereof, or mixtures thereof, which in combination with the liner layer provides effective barrier properties for the bulk first metal.

Claim (Index 1):
A back end of line (BEOL) metallization structure comprising:\n a first interconnect structure comprising an interlayer dielectric and one or more metal filled trenches therein; a second interconnect structure overlying the first interconnect structure, the second interconnect structure comprising an interlayer dielectric including at least one via including a liner layer on a bottom surface of the at least one via and on sidewalls extending from the bottom surface, a first metal in the at least one via having a recessed top surface below a plane defined by a top surface of the interlayer dielectric, and a second metal within the at least one via the filling the recessed top surface such that the second metal and liner layer define a top surface of the via and is coplanar with the top surface of the interlayer dielectric of the second interconnect structure, wherein the first metal is different from the second metal and comprises copper, tungsten, aluminum, alloys thereof or combinations thereof, and wherein the second metal comprises tantalum, tungsten, titanium cobalt, ruthenium, iridium, platinum, alloys thereof, or combinations thereof; and a third interconnect structure overlying the second interconnect structure, the third interconnect structure comprising an interlayer dielectric including a trench, wherein the at least one via of the second interconnect structure is configured to provide a conductive pathway between the first and third interconnect structures.

Metadata:
- Claim Count in Document: 7.0
- Percentile: 94.0
- Lexical Diversity: 1.69697
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15989327', '13560446', '14755440', '15251403', '14983643']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9179602378913196
- 35 USC 102 Novelty (BERT): 0.4970266460930629
- Combined Prediction Score: 0.8758668787114939
- Mean Citation Score: 230.884864
- Max Citation Score: 242.96803
- Similarity Product: 173.99006698765157

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test