A liquid crystal display showing a high contrast and reduced in color shift depending on the viewing angle is provided. A magnet is disposed on a guide rail and the coils, are energized, and whereby the moving body can be moved a long distance at high velocity by a magnetic type linear motor system. A probability level for a position for the requesting node is calculated using position information claimed by the requesting node and position information about the requesting node derived from signal measurements for the requesting node received by at least one existing authorized node in the wireless network. A passivation layer is formed over the substrate and then the passivation layer is planarized. Because of the change in the output frequency, the leakage current can be determined. If the safety-related control command of the first control unit is improper, the second control unit is able to issue its own control command to an operating element.