A typical light fixture is an integral unit that has a lamp assembly and a communications node to control the lamp assembly. The legs are preferably received in boresholes in the bipod body and, during snapping in and out, the legs move past protrusions that restrict movement of the legs between different lobes of the boresholes. In the dot inversion system, a common voltage is formed to alternate and a data voltage is inverted on the basis of the alternating common voltage, to thereby provide an effect of performing touch detection by using the alternating common voltage in a high-definitive liquid crystal display device.