A thienopyrazine compound which is useful for an organic semiconductor material. The implant assembly further comprises an electrolytically severable joint disposed on the pusher member, wherein the implantable device detaches from the pusher member when the severable joint is severed, and a return electrode carried by the distal end of the pusher member in proximity to, but electrically isolated from, the severable joint. The color display may also include a white, black, red, green, blue, yellow, cyan, magenta or other color pigment in a micro-capsule.