Process flow visualization
4 technology nodes · 40nm→7nm · 2.5D cross-sections
- Step-by-step flow navigation
- 2.5D cross-section for every step
- Rationale + citation tracing
A real 40nm starting point
Wafer In
40nm · Step 1 · Wafer Start
Built for people who want to truly understand semiconductor processes
See the complete process flow — every step, and every why
Complete 40nm→7nm flows, rendered step by step in 2.5D cross-sections, with an AI that follows the real sequence and shows paper, patent, and textbook sources when evidence covers the answer.
Read this step for free
REAL FLOW ANSWER
28nm · AAWhy does AA amorphous-carbon deposition sit between the pad stack and antireflective layers?
The preceding pad oxide and nitride isolate and protect the silicon surface, while amorphous carbon supplies a consumable hard-mask body. The N-free antireflective and cap layers above then shape the optical interface for lithography, balancing reflection control, etch selectivity, and substrate protection during pattern transfer.
PROCESS TRAVELER
28nm Planar Flow28nm
The sequence above comes from the published 28nm Flow's public preview. Live answers show citations and evidence-grounding status only when retrieved evidence covers the question—never fabricated to fill a demo.
How SemiFlows helps you understand the process
Process visualization, source tracing, and mechanism analysis work together at every step
Complete Process Flow Visualization
Navigate 1,700+ steps across 40nm CIS, 28nm, 14nm, and 7nm flows, with live 2D process cross-sections showing how the material stack develops at every node
Curated Corpus + Citation Tracing
Q&A retrieves from curated papers, patents, and textbooks, with [T1][P2][A3] citations that expand to bibliographic details and available abstracts
Mechanism-Aware AI Engine
Connects each step's process type, functional role, and surrounding flow context to explain physical, chemical, and integration mechanisms
Pricing
Two parallel offerings — mix freely: process-flow nodes (one-time, lifetime) + AI deep Q&A (subscription, free tier included)
One-time · lifetime
Technology Nodes
One-time purchase, lifetime access
Every technology node includes 300 Ångström credits/month
28nm
$49
- 266-step complete process flow
- Rationale & risk analysis per step
- Paper & patent citation tracing
- HKMG integration details
- 2.5D process cross-section for every step — physical structure evolution, step by step
- One-time purchase, lifetime access
14nm
$149
- 362-step FinFET process flow
- Rationale & risk analysis per step
- Paper & patent citation tracing
- Multi-patterning + MOL integration
- 2.5D process cross-section for every step — physical structure evolution, step by step
- One-time purchase, lifetime access
7nm
$349
- 714-step advanced process flow
- Rationale & risk analysis per step
- Paper & patent citation tracing
- SAQP patterning + self-aligned contacts
- 2.5D process cross-section for every step — physical structure evolution, step by step
- One-time purchase, lifetime access
Pay by card, PayPal, Apple Pay, or Google Pay — exact options shown at checkout
Subscription · optional
AI Deep Analysis
Pro is available on its own; technology nodes are purchased separately when needed
Free
$0
Try Flow-aware process Q&A
- 120 AI chat credits/month
- Quick answer mode
- All three source types when evidence supports the answer
Ångström Pro · Monthly
$19/mo
Renews monthly for flexibility
- 6,000 AI chat credits/month
- Smart reasoning engine (multi-model)
- Deeper evidence retrieval across papers, patents, and textbooks
- Deep knowledge retrieval + process context analysis
Ångström Pro · Annual
$180/yrSave 21%
Renews annually, $48 less than monthly
- 6,000 AI chat credits/month
- Smart reasoning engine (multi-model)
- Deeper evidence retrieval across papers, patents, and textbooks
- Deep knowledge retrieval + process context analysis
Pro upgrades AI Q&A; paid process-flow nodes remain separate purchases
All Access Pro
Save 34%All nodes lifetime access + Pro AI for 1 year
Renews at $180/yr (Pro AI only)
$727$479
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Frequently Asked Questions
Common questions about the SemiFlows platform
SemiFlows is an AI-powered semiconductor process knowledge platform that provides complete, step-by-step process flows from 40nm to 7nm, covering both logic chips and CMOS image sensors. It integrates extensive research papers, patents, and authoritative textbooks to deliver in-depth rationale analysis with citation tracing for each process step. The 40nm BSI CIS flow is entirely free.
SemiFlows currently covers four process flows: 40nm BSI CMOS Image Sensor (417 steps, free), 28nm Planar (266 steps), 14nm FinFET (362 steps), and 7nm FinFET (714 steps). Together, these flows provide over 1,700 detailed process steps spanning both logic chip and image sensor fabrication.
SemiFlows is purpose-built for learning and researching semiconductor processes. It brings structured process flows, step-by-step cross-sections, physical and chemical mechanism explanations, and traceable paper and patent citations into one learning path, with Q&A grounded in the current step and surrounding flow context.
SemiFlows provides physics and chemistry principles behind each process step, mechanism explanations (why a process works), integration rationale (why steps are ordered a certain way), and risk analysis. All content focuses on fundamental principles — not specific manufacturing recipes, equipment parameters, or vendor details.
Yes. SemiFlows supports both English and Chinese (中文). Users can switch languages at any time using the language toggle. The AI chat assistant also responds in the user's selected language.