Chinese firms from chip packaging and display sectors are aggressively expanding into glass substrates, positioning the country as a key player in next-gen semiconductor tech. This move targets AI chips and advanced interconnects, leveraging China’s display manufacturing prowess.
BOE Technology, Visionox, and JCET lead efforts, with pilots for TGV-enabled panels already underway.
Mass production is known to start post-2026, enabling denser chiplets, better heat handling, and panel-level scaling beyond organic substrates’ limits.
Strategic Push and Tech Advantages
Glass offers superior flatness for sub-2?m lines, low warpage under high power, and larger formats (e.g., 515x510mm panels). It’s ideal for CPO optics, silicon photonics, and HPC amid EUV curbs, shifting competition to back-end packaging where China excels.
Display giants repurpose LCD/OLED lines for semis, boosting yields via rectangular glass expertise. Firms like Guangdong Fozhixin and Chengdu ECHINT deliver high-aspect TGV (up to 150:1) and FOPLP mass production.
Key Comments
- Visionox reps affirm: “Our RMB 5B expansion accelerates glass substrates alongside X-ray tech, fortifying the display-semiconductor chain.”
- JCET highlights integration: “Glass cores power our 1.6T optical modules and CPO small batches shipped, revenue growing.”
- BOE eyes AI: “Standardized high-strength, low-warpage cores target AI chips; 2026 volume ramp confirmed.”
- China’s “semiconductor sovereignty” via 14th Five-Year Plan ($2.1B for packaging) fuels this, potentially dominating SiP for AI supremacy.
China aims to dominate glass substrate advances for semis and displays, with display giants pivoting to AI packaging via TGV and FOPLP. Key players focus on high-flatness panels for chiplets and photonics.
Top Companies Eyeing Glass Substrates
| Company | Focus Areas | Key Milestones |
|---|---|---|
| BOE Technology | TGV for AI/CPUs, display-to-semi shift | 2026 pilot production; Kunshan Gen 8.6 line for rectangular panels |
| Visionox | LTPS/OLED glass, X-ray substrates | RMB 5B expansion for semis; high-volume TGV |
| JCET Group | Glass-core FOPLP, CPO modules | 1.6T shipments; advanced packaging revenue surge |
| ECHINT Tech | TGV (150:1 aspect), FOPLP | Mass production; 2?m lines for HPC |
| Guangdong Fozhixin | High-strength cores for AI chips | Low-warpage standardization; CPO optics |
Momentum DriversThese firms leverage display scale (e.g., BOE’s 90% LCD share) for semis, backed by $2.1B policy funds. Absolics (SKC-linked) competes but trails in China capacity. Expect 2026 commercialization as US export curbs push back-end innovation.
Geopolitical Self-Reliance
US EUV curbs force “back-end” focus advanced packaging where China holds 40% share. 15th Five-Year Plan ($2.1B Big Fund III) funds “Glass Valley” in Suzhou/Wuxi for sovereignty in AI supply chains.
