Overview
Epistar's Hsinchu Science Park fab cluster grows AlGaInP and InGaN LED epitaxial wafers and fabricates LED chips. Epistar was founded in Hsinchu in 1996, absorbed United Epitaxy Company in 2005 and Formosa Epitaxy in 2014 (bringing group capacity to more than 400 MOCVD reactors), and became part of the Ennostar holding group in 2021. The company's first products, AlInGaP LEDs, launched in November 1997 per the official Ennostar milestones. Key facility details include: The facility is situated at Hsinchu, Taiwan. It focuses on Compound Semiconductor and AlGaInP, InGaN process nodes on 150mm wafers. Production at this facility commenced in 1997.
Technology
About Ennostar
Ennostar Inc. is a Taiwanese compound-semiconductor holding company formed in 2021 from the merger of LED makers Epistar and Lextar (fully consolidated into a single legal entity in October 2025). Epistar handles LED epitaxy and chip production, Lextar handles packaging and modules, and subsidiary Unikorn Semiconductor develops compound-semiconductor foundry services; Ennostar is the world's 5th-largest LED producer by revenue.