Gamma voltage generating apparatus

摘要

A gamma voltage generating apparatus for reducing the number of parts to simplify a structure thereof is disclosed. The apparatus is operated in various modes such that a brightness value can be changed in correspondence with an external environment. A red gamma voltage generator has at least one variable resistor to generate a plurality of red gamma voltages and control the plurality of red gamma voltages such that said brightness value can be changed in correspondence with each of said various modes. A green gamma voltage generator has at least one variable resistor to generate a plurality of green gamma voltages and control the plurality of green gamma voltages such that said brightness value can be changed in correspondence with each of said various modes. A blue gamma voltage generator has at least one variable resistor to generate a plurality of blue gamma voltages and control the plurality of blue gamma voltages such that said brightness value can be changed in correspondence with each of said various modes.