United Microelectronics Corporation (UMC), Taiwan's second-largest contract chipmaker, announced the commencement of mass production for its first silicon photonics wafers at its Singapore facility on July 14, 2026. This milestone was achieved in collaboration with SILITH Technology, a local fabless chip design company, with the joint team bringing the silicon photonics platform from development to production readiness in just 18 months. The initiative aims to meet the increasing demand for high-speed optical interconnects in AI and hyperscaler data center networks, supporting next-generation AI infrastructure [1].
UMC also revealed plans to make its own 12-inch silicon photonics platform available for customer product development by 2027 [1]. The company recently reported robust financial results, with June sales rising 22.85% year-on-year to NT$23.12 billion ($719.21 million), and cumulative sales for the first half of the year increasing by 11.28%. Citi analysts forecast a 13% quarter-on-quarter sales jump in the second quarter of 2026 and anticipate a recovery in gross margin, reflecting an improving outlook for the chipmaker in the second half of the year [1].
Despite the positive financial performance and analyst optimism, UMC's stock experienced volatility, falling nearly 5% during Tuesday's session before paring losses to close 1.6% lower in Taiwan. This suggests some market caution or profit-taking despite the upbeat outlook [1].
UMC's expansion in Singapore is part of a broader trend among Taiwanese tech firms, including King Yuan Electronics Corp and Vanguard International Semiconductor Corporation, as Singapore strengthens its position as a major regional hub for the global semiconductor supply chain. The silicon photonics market is projected to reach $3.71 billion globally in 2026, driven by surging data traffic and demand for faster optical communication [1].
CONCLUSION
UMC's launch of mass production for silicon photonics wafers in Singapore marks a significant step in addressing the growing needs of AI and data center networks. While the company posted strong sales growth and received positive analyst forecasts, the stock's initial decline indicates mixed market sentiment. The expansion underscores Singapore's rising importance in the semiconductor industry and the robust outlook for silicon photonics technology.