A self-supporting apparatus can be placed in a pre-set opening in an existing wall substrate. Also disclosed are pharmaceutical compositions comprising the histamine-3 receptor ligands, methods for using such compounds and compositions, and a process for preparing compounds within the scope of formula. A slider is also provided, which can or cannot abut the retainer by moving up and down along with the drive of a motor. Further, in the case of setting up such an offset region and a resistor in one semiconductor layer, an integrated semiconductor device can be manufactured. The LCD backlight apparatus can reduce the Bezel width without increasing the thickness of the LCD.