A stressed semiconductor structure including at least one FinFET device on a surface of a substrate, typically a buried insulating layer of an initial semiconductor-on-insulator substrate, is provided. The additional MAC functionality aids in enabling feedback from wireless terminals to base stations. By using the angle adjusting device for a display, the display is secured at an optimal viewing angle for a user under normal watching conditions in mounting, for example, at a tilt of 5 or 10 degrees. Using the selected pixel density compensation method, a pixel density compensation parameter is determined to adjust the current pixel density with respect to the minimum pixel density for the object of interest. It furthermore includes the step of applying to the bottom electrode a semitransparent layer of a metal having a work function in the range from 4 to 7 eV and applying to the semitransparent layer at least one organic functional layer and a top electrode including magnesium and silver. When power supply to controller is once interrupted and re-started, ice storage amount detecting switch detects shortage of ice so as to hold motor not to drive until ice sensor detects temperature below a predetermined temperature.