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Explore BEOL interconnect physics — copper dual-damascene, barrier/seed layers, electromigration, and RC delay scaling. Learn how metallization schemes evolve from 28nm through 7nm and beyond.

56 articles
40nm BSI CMOS Image Sensor metal-four interconnect integration process flow14nm FinFET self-aligned contact integration process flow28nm Planar metal-two interconnect integration process flow40nm BSI CMOS Image Sensor direct-bond interconnect integration process flow40nm BSI CMOS Image Sensor via-five integration process flow7nm FinFET top-metal interconnect integration process flow

Related Process Flows

7nm FinFET7nm714 steps14nm FinFET14nm362 steps28nm Planar Flow28nm266 steps

Technical Blog

Deep dive into the physics and integration logic of semiconductor manufacturing

InterconnectAug 11, 20265 min read

40nm BSI CMOS Image Sensor Metal-Four Interconnect Integration: Process Flow Principles and Device Physics

Role in the Complete Flow In the 40nm backside-illuminated (BSI) complementary metal-oxide-semiconductor (CMOS) image sensor process flow, the metal-four (MET4)

InterconnectAug 11, 20265 min read

14nm FinFET Self-Aligned Contact Integration: Process Flow Principles and Mechanisms

Role in the Complete Flow The 14nm FinFET self-aligned contact integration represents a critical module that bridges the front-end-of-line (FEOL) transistor for

InterconnectAug 11, 20265 min read

28nm Planar Metal-Two Interconnect Integration: Process Flow Principles and Mechanism Deep Dive

Role in the Complete Flow The 28nm Planar metal-two (M2) interconnect integration module occupies a pivotal position in the back-end-of-line (BEOL) sequence of

InterconnectAug 11, 20265 min read

40nm BSI CMOS Image Sensor Direct-Bond Interconnect Integration Process Flow: Principles and Physical Mechanisms

Role in the Complete Flow In a 40nm BSI CMOS image sensor, the direct-bond interconnect (DBI) module serves as the critical bridge between the pixel sensor wafe

InterconnectAug 11, 20265 min read

40nm BSI CMOS Image Sensor Via-Five Integration Process Flow: Principles, Mechanisms, and Integration Logic

Role in the Complete Flow The 40nm BSI CMOS Image Sensor via-five (V5) integration module occupies a critical position within the multilevel interconnect stack

InterconnectAug 11, 20265 min read

7nm FinFET Top-Metal Interconnect Integration: M12 Module Process Flow Principles and ESL Chemistry

Role in the Complete Flow The 7nm FinFET top-metal interconnect integration represents the capstone of the back-end-of-line (BEOL) wiring stack, where the final

InterconnectAug 11, 20265 min read

7nm FinFET M3 Interconnect Integration: Process Flow Principles and ESL Mechanics

Role in the Complete Flow In the 7nm FinFET technology platform, the metal-three (M3) interconnect module occupies a pivotal position within the back-end-of-lin

InterconnectAug 11, 20265 min read

7nm FinFET Metal-Ten Interconnect Integration: Process Flow Principles, ESL Chemistry, and Module Dependencies

Role in the Complete Flow The 7nm FinFET technology platform represents a generation where extreme ultraviolet (EUV) lithography is comprehensively applied to m

InterconnectAug 11, 20265 min read

7nm FinFET Metal-Nine Interconnect Integration: ESL Chemistry, Damascene Logic, and Module Dependencies

Role in the Complete Flow The 7nm FinFET metal-nine (M9) interconnect integration module occupies a critical position in the back-end-of-line (BEOL) stack of a

InterconnectAug 11, 20265 min read

7nm FinFET Contact Integration Process Flow: Principles, Mechanisms, and Integration Logic

Role in the Complete Flow The 7nm FinFET contact integration module sits at the critical interface between front-end-of-line (FEOL) transistor formation and mid

InterconnectAug 11, 20265 min read

7nm FinFET Metal-Eleven Interconnect Integration: Process Flow Principles, ESL Chemistry, and Module Dependencies

Role in the Complete Flow The metal-eleven (M11) interconnect module occupies a critical position within the back-end-of-line (BEOL) stack of a 7nm FinFET techn

InterconnectAug 11, 20265 min read

40nm BSI CMOS Image Sensor Via-Two Integration: Process Flow Principles and Device Physics

Role in the Complete Flow The via-two (V2) module in a 40nm BSI CMOS Image Sensor serves as the critical inter-level bridging step between the second-level meta

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SemiFlows

Semiconductor process knowledge — flow visualization + Flow-aware, evidence-linked Q&A

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© 2026 SemiFlows. All rights reserved.

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