A scanning image displaying apparatus capable of preferably adjusting a diopter is disclosed. A first via is used for electrically connecting a pad to a drain of an NMOS transistor of an ESD protective circuit. As the CMP pad is formed from a non-porous material, chemical and mechanical components of material removal are parsed to the non-contact portions and the contact portions, respectively. The design of the aft vertical flaps 2 produces a tail-down moment to counter the main aft wing trailing edge flap action.