The present invention is to improve on an emissive display by providing a backplane and modulation system that enables fabrication of multi-color or monochrome LED display systems that operate efficiently and without objectionable image artifacts. One aspect of the present invention is to implement the backplane of an emissive display that offers high precision across an array of pixels and extremely low variation. The present invention uses a large L FET to generate a reference current and then uses the same large L FET to act as a current source mirroring the reference current, thereby ensuring a substantially perfect match between reference current FET and current source FET.