Taiwan-based Ennostar Corporation was established in early 2021 as a joint venture between Epistar and Lextar. Ennostar started out as a holding company that owned both Epistar and Lextar, and more subsidiaries, and together the two companies hold about 12.5% of the global LED chip market. In 2025, Epistar and Lextar formally merged into Ennostar.
Ennostar official goal is to become a multinational investment platform for the compound semiconductor industries. Specifically the focus is on mini LEDs and microLEDs products and technologies.
Ennostar is active in three main areas: LED epitaxy and chip production (formally Epistar's business), LED packaging and module production (formally Lextar's business) and an advanced compound semiconductor foundry (formally Unikorn Semiconductor.