Liquid crystal display device

A liquid crystal display device comprising:

• a first substrate and a second substrate which are arranged to face each other in an opposed manner by way of liquid crystal;
• and
• first electrodes which are formed in a pixel region of a liquid-crystal-side surface of the first substrate and second electrodes which are formed in a pixel region of a liquid-crystal-side surface of the second substrate, wherein liquid crystal molecules are arranged in the substantially vertical direction with respect to the substrates in a state that an electric field is not generated between the first electrodes and the second electrodes, and
• a predetermined voltage which is equal to or less than 20% of a maximum voltage applied between the first electrodes and the second electrodes in the pixel regions constituting at least a portion of a mass of the pixel regions is applied between at least one of the first electrodes and the second electrodes at a rate of one or more times per 1 minute and not more than 5 times per 1 second.

A liquid crystal display device comprising:

• a first substrate and a second substrate which are arranged to face each other in an opposed manner by way of liquid crystal;
• and
• first electrodes which are formed in a pixel region of a liquid-crystal-side surface of the first substrate and second electrodes which are formed in a pixel region of a liquid-crystal-side surface of the second substrate, wherein
• liquid crystal molecules are arranged in the substantially vertical direction with respect to the substrates in a state that an electric field is not generated between the first electrodes and the second electrodes, and
• a predetermined voltage which is equal to or less than 20% of a maximum voltage applied between the first electrodes and the second electrodes in the pixel regions constituting at least a portion of a mass of the pixel regions is applied between at least one of the first electrodes and at least one of the second electrodes at a rate of one or more times per 5 seconds and not more than 5 times per 1 second.