Epistar is the first company to develop transparent ITO technology on LED. Moreover, Epistar possesses related patents and best quality LED products to meet the restrict requirements of automobile applications. In addition to the excellent features of LED products, the measurement of LED characteristics at 2mA is also a severe challenge for engineers. Epistar experienced engineering team has successfully improved the measurement system and overcome the measurement accuracy issue at small current. All these efforts have made the chips be checked with more stable and accurate process flow before shipment.