Market Context — Why This Technology, Why Now

The global push for advanced semiconductor materials like hexagonal boron nitride (h-BN) is intensifying, driven by the need for superior insulation, thermal management, and mechanical strength in next-generation devices. As miniaturization limits conventional materials, h-BN offers a pathway to enhanced performance. However, precise, low-damage patterning remains a key challenge. This technology provides a critical solution, enabling higher manufacturing yields and accelerating the development of high-performance, energy-efficient chips for burgeoning markets in AI, IoT, and advanced computing.

Key Competitive Advantages
01

Achieves high-precision patterning of h-BN films without damage using F2 gas reactive ion etching.

02

Enhances process stability and yield by overcoming conventional h-BN etching challenges, ensuring stable etching rates and reproducibility.

03

Secures long-term market exclusivity until ~2042, with only three prior art references highlighting its unique technological position.

Market Opportunity
Semiconductor Device Manufacturing
$10B globally (AI est.)
Miniaturization and performance enhancements are driving the adoption of h-BN films across all semiconductor products, including high-performance logic ICs, memory, power semiconductors, and high-frequency devices.
Tier 1 semiconductor foundries Advanced logic and memory manufacturers Power semiconductor device producers High-frequency device developers
Advanced Materials Processing
$150M domestically (AI est.)
Precise patterning technology is a common challenge in developing devices using graphene, MoS2, and other 2D or novel materials, where this technology offers significant application potential.
2D material research and development firms Advanced material processing equipment suppliers Specialty chemical and gas suppliers for etching Nanotechnology R&D centers
IoT/AI Chip Manufacturing
$3.5B globally (AI est.)
The increasing demand for edge AI devices and IoT sensors requires compact, low-power, high-performance chips, a need that h-BN film-enabled devices can effectively address.
Edge AI chip developers IoT sensor manufacturers Low-power computing device producers Integrated circuit design houses
IP Defensibility — Why Competitors Can't Replicate This
What This Patent Covers

This patent protects a robust method for etching h-BN films using F2 gas reactive ion etching, ensuring high precision and low damage. Its claims are meticulously designed, and the patent has demonstrated strong validity against examiner challenges, indicating a low risk of invalidation and relatively easy infringement detection.

Competitive White Space

Adjacent white space exists in applying this F2 gas RIE method to other 2D materials beyond h-BN, or in developing integrated deposition-etching systems for advanced material stacks. Further IP could also be built around novel mask materials or in-situ process monitoring for even finer control.

Economic Impact
~$400K/year estimated production cost reduction per facility (AI est.).
estimated ROI · USD · AI analysis
ROI Calculation Logic

Improving yield from 90% to 95% in h-BN film etching could reduce defective wafers by 100 per month. Assuming a value of ~$350/wafer (AI est.), this translates to an annual economic impact of ~$400K (AI est.). This also contributes to higher equipment utilization and additional productivity gains.

Speed to Market
4× faster than in-house development
As a research outcome from Kyushu Institute of Technology, the fundamental mechanism is well-established. F2 gas is a common etching gas used in existing semiconductor manufacturing lines, and reactive ion etching equipment is widely available. This allows for rapid integration into existing processes, significantly reducing the need for new dedicated equipment development or large-scale capital investment, thereby shortening time-to-market by approximately 3.0 years compared to in-house development and enabling early revenue contribution.
Competitive Positioning

X: Process Efficiency
Y: Miniaturization & Performance Contribution

Business Models & Applications
💡 Process Technology Licensing
License the etching process technology to semiconductor manufacturers or equipment makers, generating revenue through technical usage fees and royalties.
🤝 Joint Research & Development Agreements
Engage in joint R&D with licensees to develop h-BN devices for specific applications or explore new material applications, balancing technological advancement with revenue generation.
🛠️ OEM Supply of Dedicated Etching Equipment
Partner with equipment manufacturers to produce and supply dedicated etching equipment or modules incorporating this technology, accelerating market penetration.
Adjacent Application Opportunities
🔬 Nanoelectronics
Microfabrication of Graphene & 2D Materials
This technology could be applied to the precise etching of graphene and other 2D materials, establishing manufacturing processes for next-generation transistors and quantum devices. It offers particular advantages in fields requiring atomic-layer-level film thickness control, potentially enabling devices with ~10x higher performance.
🚀 Aerospace & Defense
Manufacturing Lightweight, High-Durability Components
Leveraging h-BN's high heat resistance and mechanical strength, this technology could be applied to microfabrication of lightweight structural materials and high-durability components for the aerospace sector. It has the potential to contribute to reliable patterning for parts requiring performance in harsh environments, reducing component weight by up to 20%.
🔋 Next-Generation Batteries
Electrode Patterning for All-Solid-State Batteries
Precise patterning of insulating or protective layers, such as h-BN films, is often required for electrode materials and solid electrolyte membranes in all-solid-state batteries. Applying this technology could contribute to enhancing battery performance and extending lifespan by ~15% through improved interface control.
Integration Roadmap — Estimated 22-Month Deployment
Phase 1: Technology Evaluation & Verification
Duration: 4 months
Evaluate the technology's compatibility with the licensee's existing equipment environment and conduct initial etching characteristic verification. Analyze F2 gas introduction safety and impact on existing processes.
Phase 2: Process Optimization & Prototyping
Duration: 9 months
Based on verification results, optimize etching conditions for the licensee's specific h-BN films and device structures. Confirm target yield and device performance through prototyping.
Phase 3: Mass Production Line Integration & Operation
Duration: 9 months
Implement the optimized process into the mass production line and perform final adjustments for stable operation. Maximize production efficiency and quality through continuous monitoring and improvement.
Technical Feasibility
This technology is applicable to existing reactive ion etching equipment through a process change involving F2 gas introduction. As no new dedicated equipment is required, initial investment can be minimized, and high physical and technical compatibility with existing semiconductor manufacturing lines is expected. The specific gas composition and process steps outlined in the claims indicate low barriers to adoption, allowing for rapid implementation.
Success Scenario
Upon adopting this technology, semiconductor device manufacturing utilizing h-BN films could see a ~5% improvement in microfabrication yield. This could lead to reduced product defect rates and enhanced production efficiency, potentially resulting in annual cost savings of several hundred thousand dollars and strengthened market competitiveness. It may also contribute to shortening the lead time for next-generation device development.
Patent Record
APPLICATION NO.
特願2021-174857
REGISTRATION NO.
7725062
FILING DATE
2021/10/26
GRANT DATE
2025/08/08
EXPIRATION DATE
2041/10/26
PATENT HOLDER
国立大学法人九州工業大学
Examination History
2024年08月16日
出願審査請求書
2025年04月22日
拒絶理由通知書
2025年05月07日
手続補正書（自発・内容）
2025年05月07日
意見書
2025年07月29日
特許査定