Patent ID: 8339301

Claim:
A digital-to-analog converter comprising: a gamma voltage generator configured to generate at least three kinds among RGB common gamma voltages, RG gamma voltages, R gamma voltages, G gamma voltages and B gamma voltages, using gamma reference voltages; a control circuit configured to generate at least three driving signals among an RGB driving signal, an RG driving signal, an R driving signal, a G driving signal and a B driving signal in response to an input control signal and a least significant bit of N-bit (N is an integer) gamma voltage selection signals; and a switching block configured to switch the RGB common gamma voltages, the RG gamma voltages, the R gamma voltages, the G gamma voltages and the B gamma voltages in response to at least three corresponding driving signals among the RGB driving signal, the RG driving signal, the R driving signal, the G driving signal and the B driving signal, and select and output gamma voltages that correspond to bits remaining by excluding the least significant bit from the N-bit gamma voltage selection signals.