TSMC Teams Up With Innolux and Ibiden on Glass-Substrate Packaging for AI Chips
As AI chips grow larger and consume more power, conventional packaging faces challenges involving substrate warpage, heat dissipation and yields. TSMC is advancing its CoPoS panel-level packaging technology and working with Taiwan’s Innolux and Japan’s Ibiden to validate glass substrates. Their flatness and thermal stability could support mass production of next-generation packaging for large AI chips.
TSMC recently disclosed the results of the three-way validation for the first time, showing that glass substrates can improve warpage and thermal management in large-format packages. Analyst Ming-Chi Kuo said the market was underestimating the importance of glass substrates and TSMC’s “oS” technology, whose impact could exceed that of “CoP.” As of July 20, 2026, the available information did not disclose the investment amount, validation date or mass-production timetable.
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The history behind this eventInnolux Targets AI Chip Supply Chain With Glass Substrate Push
Demand for artificial-intelligence chips and high-performance computing is increasing pressure on advanced packaging systems to provide better heat management, denser interconnections and faster signal transmission. Innolux is seeking to apply its expertise in glass processing and precision manufacturing to through-glass-via, or TGV, substrates and silicon photonics, giving the Taiwanese panel maker a potential route into the next generation of AI chip supply chains.
Innolux reported a significant improvement in second-quarter profitability, with earnings per share rising nearly twofold from the previous quarter. The company has also established a new semiconductor subsidiary, 群超半導體, to accelerate development and commercialization of TGV glass substrates and related technologies. Innolux is targeting an advanced-packaging glass substrate market that it expects could reach $8 billion by 2030, driven by AI and high-performance computing applications.
TSMC Glass-Substrate Production Delay Weighs on AI Advanced-Packaging Plans
TSMC is developing glass core substrates, or GCS, to address warpage, heat dissipation and interconnection requirements as AI chips grow larger, while improving advanced-packaging performance. The technology will also affect the pace at which Taiwanese companies including Innolux can enter the semiconductor supply chain. Related reports did not disclose TSMC’s investment.
A recent Goldman Sachs report said TSMC’s commercial mass production of GCS would be delayed until after 2030. Conventional ABF substrates will remain the mainstay during the transition, deferring potential orders for Innolux and other suppliers while boosting near-term demand for Nittobo’s high-end glass fiber cloth. The report’s publication date and the value of any new orders were not disclosed.
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