CIRCUIT FOR COMPENSATING BRIGHTNESS UNIFORMITY

摘要

PURPOSE: A circuit for compensating brightness uniformity is provided to supply a final brightness control voltage to a first grid electrode in order to compensate the brightness uniformity. CONSTITUTION: A circuit for compensating brightness uniformity includes a parabolic signal controller(10), and a brightness control voltage provider(20). The parabolic signal controller(10) amplifies a parabolic gain varied according to resolution and outputs the amplified parabolic signal. The brightness control voltage provider(20) amplifies the last brightness control voltage and supplies the amplified last brightness control voltage to a first grid electrode of the first grid. The parabolic signal controller(10) further includes an amplifier amplifying the parabolic gain and a condenser coupling the amplified parabolic signal.