A plasma display panel is provided. The select transistor is made sufficiently small so as to allow the EEPROM cells to accommodate the bit line pitch of the Flash cell, which facilitates combining the two memories into memory banks containing both cells. The shield electrode has a second pattern on an edge so as to be evenly spaced apart from the first pattern. The transport path is disposed in the housing member, and extends from the sheet tray in a second direction perpendicular to the first direction. The dental implant system of this invention is capable of increasing boneimplant stabilization and providing a supply path through which to evenly distribute human growth factor to the bone structure surrounding the root portion. The weight machine includes a hydraulic cylinder that will retard movement of the weight under gravity, and will permit free movement against the force of gravity.