GAMMA VOLTAGE GENERATION UNIT HAVING SIMPLIFIED STRUCTURE FOR CHANGING LUMINANCE VALUES ACCORDING TO CHANGE OF EXTERNAL ENVIRONMENT

摘要

PURPOSE: A gamma voltage generation unit is provided to simplify an entire structure by reducing the number of components of red, green, and blue gamma voltage generators. CONSTITUTION: A gamma voltage generation unit includes a red gamma voltage generator, a green gamma voltage generator, and a blue gamma voltage generator. The red gamma voltage generator(42) is used for generating a plurality of red gamma voltages to change luminance correspondingly to each mode and includes at least one variable resistor to control the red gamma voltages. The green gamma voltage generator(44) is used for generating a plurality of green gamma voltages to change luminance correspondingly to each mode and includes at least one variable resistor to control the green gamma voltages. The blue gamma voltage generator(46) is used for generating a plurality of blue gamma voltages to change luminance correspondingly to each mode and includes at least one variable resistor to control the blue gamma voltages.