Patent ID: 8493375

Claim:
A driving apparatus for a display device, comprising: a reference gamma voltage generator configured to generate a reference gamma voltage according to a multi-time programming (MTP) control signal, a write control signal, and an erase control signal; and a data driver configured to convert a data signal into a data voltage corresponding to the reference gamma voltage and to apply the converted data voltage to a display panel, wherein the reference gamma voltage generator comprises: a protection unit configured to output a first voltage as a first internal voltage when the MTP control signal is at a first level, and to interrupt the output of the first voltage when the MTP control signal is at a second level; an MTP cell configured to program a bit signal by utilizing the first internal voltage and a second internal voltage according to the write control signal and the erase control signal, wherein the MTP control signal is at the first level when the bit signal is to be programmed, and is at the second level when the MTP cell is to be in a standby state; and a gamma register configured to determine the reference gamma voltage corresponding to the bit signal.