GAMMA VOLTAGE GENERATOR, ESPECIALLY INCLUDING A RED, A GREEN, AND A BLUE GAMMA VOLTAGE GENERATION UNIT GENERATING A PLURALITY OF EACH VOLTAGE TO REDUCE THE NUMBER OF COMPONENTS

摘要

PURPOSE: A gamma voltage generator is provided to simplify its structure by scaling down an EL module by expressing gray levels by reducing the number of components in each of a red, a green, a blue gamma voltage generator. CONSTITUTION: The gamma voltage generator operates in various modes in order to change its luminance value in correspondence to external environment. A red gamma voltage generation unit(42) generates a number of red gamma voltages in order to change the luminance value in correspondence to each mode. A green gamma voltage generation unit(44) generates a number of green gamma voltages in order to change the luminance value in correspondence to each mode. And a blue gamma voltage generation unit(46) generates a number of blue gamma voltages in order to change the luminance value in correspondence to each mode.