In a liquid crystal display device performing alternating-current driving, at least one of a gate voltage amplitude Vgp\u2212p upon application of a positive polarity voltage and a gate voltage amplitude Vgp\u2212p upon application of a negative polarity voltage is changed in accordance with a liquid crystal driving frequency. The device comprises a Hitching Bar, and a Grab Loop with a hand grip and a ring connecting the Bar and Loop. The perimeter wall forms a contaminant shield to substantially prevent dust external to the device from contaminating the plurality of guide portions. The lens is arranged to focus the actinic radiation from the light source. The first remote write accesses a remote storage and replicates the first local write. Currents flowing through the difference amplifiers are switched by the components of the local oscillator signal in alternation.