Patent ID: 8879015

Claim:
A liquid crystal display device comprising: a first substrate; a first thin film transistor for pixel selection formed on the first substrate; a pixel electrode and a common electrode formed above the first thin film transistor of the first substrate; a liquid crystal layer formed above the pixel electrode and the common electrode; a second substrate provided above the pixel electrode and the common electrode via the liquid crystal layer; a shield electrode formed on an entire surface of the second substrate and on a side facing the liquid crystal layer; a common potential interconnection that is formed on the first substrate and supplies specific AC or DC potential; a conducting section that is provided between the first substrate and the second substrate, and is connected to the shield electrode; and a switch device that is formed on the first substrate, and has a first end and a second end, the first end of the switch device being electrically connected to the shield electrode via the conducting section, the second end of the switch device being electrically connected to the common potential interconnection, wherein the switch device is turned on when a potential of the shield electrode is larger than the specific AC or DC potential of the common potential interconnection and a difference between the potential of the shield electrode and the specific AC or DC potential of the common potential interconnection is larger than predetermined potential.