TSMC has circulated a 'CoWoS glass-substrate development plan' to its supply chain, naming ABF substrate maker Ibiden and panelmaker Innolux to jointly validate the feasibility of introducing glass substrates into CoWoS advanced packaging. TSMC says

2026-06-16

TSMC has circulated a 'CoWoS glass-substrate development plan' to its supply chain, naming ABF substrate maker Ibiden and panelmaker Innolux to jointly validate the feasibility of introducing glass substrates into CoWoS advanced packaging. TSMC says this is its first public disclosure of glass-substrate technical progress and indicates the technology has entered industrial verification. The company cautioned glass substrates remain some way from full mass production and further R&D is required on glass thickness and large-format CoWoS package layouts.