A self-illuminating display includes a substrate, and a number of light emitting units. In one or more implementations, these techniques may also include adjustment of injection pressure, configuration of runners, andor use of vacuum pressure, and so on to encourage flow of the metal alloy through a mold. The slidable board has a surface slidably mounted to the base and coupled with the screw rod and an opposite surface to which the coupler is mounted for coupling with the frame. By filling the trench with an insulating material, a STI and an interlayer insulating layer are formed. The four terminals include two power terminals and two ground terminals, and at least the two power terminals have insulating coating layers respectively at their distal end portions.