Liquid crystal apparatus and driving method for preventing the yellowing phenomenon

摘要

A liquid crystal apparatus is constituted by a liquid crystal device including a pair of substrates respectively having thereon scanning electrodes and data electrodes arranged in a matrix shape, and a liquid crystal disposed between the substrates and capable of causing a cumulative translational movement depending on a change in an external electric field applied to the liquid crystal; and drive means for controlling a first frequency f having a variable range and representing an effective frequency of a drive data signal pulse applied to the liquid crystal so that a second frequency f0 representing an inversion frequency at which a direction of the translational movement of the liquid crystal is turned in an opposite direction is in the variable range of the first frequency f. The above drive means used in the liquid crystal apparatus is effective in suppressing a cumulative translational movement of liquid crystal molecules for a long time. <IMAGE>