LIQUID CRYSTAL DISPLAY APPARATUS AND LIQUID CRYSTAL PANEL DRIVING MEHTOD

摘要

A liquid crystal display apparatus includes common voltage generator circuit (5) for supplying a common voltage to a common electrode connected in common to a plurality of liquid crystal cells which form part of liquid crystal panel (9); liquid crystal driving circuit (2) for inversely driving liquid crystal panel (9); timer (8) for measuring a time for which liquid crystal panel 9 has been used; storage unit (10) for storing characteristic data which represents the relationship between used hours of liquid crystal panel (9) and an optimal value for the common voltage; and control unit (4) for determining a time for which liquid crystal panel (9) has been used up to the present time based on a measurement result by timer (8), retrieving an optimal value for the common voltage for the determined used time with reference to the characteristic data stored in storage unit (10), and controlling such that a magnitude of the common voltage output from the common voltage generator circuit is equal to the optimal value.