ENNOSTAR Inc. engages in the research and development, manufacture, and sale of compound semiconductors in Taiwan. The company's products include wafers and dies, packaged light-emitting diodes, and modules. Its products are used in displays, professional lighting, automotive, and sensing applications. The company was formerly known as EPISTAR Corporation. ENNOSTAR Inc. was incorporated in 1996 and is headquartered in Hsinchu City, Taiwan.