An automatic pot stirrer is provided that has a mount assembly. An initial barrier layer, such as Ta or TaN, is first formed on a patterned substrate followed by seed layer formed using high density plasma PVD techniques. A floating gate pattern may be formed on the tunnel oxide layer, and may include a lower part having a first width that is formed on the tunnel oxide layer and an upper part having a second width that is formed on the lower part, where the second width is substantially smaller than the first width. The insulating housing includes a circuit board receiving slot, which is adapted for fixing the circuit board in the high frequency connector. In the display device, light-path converting members are provided on stationary members to change a path of a light inputted obliquely through stationary members and movable members vertically with respect to a display screen.