Patent ID: 8466868

Claim:
An organic light emitting display device, comprising: a pixel unit including a plurality of pixels disposed near intersection points of scan lines and data lines; and a data driver configured to generate a data signal corresponding to received data and to a power voltage, wherein the power voltage is based on a voltage of a data drive power source, wherein the power voltage is different from the voltage of the data drive power source, and wherein the data driver is further configured to supply the generated data signal to the data lines, wherein the data driver comprises: a data signal generation unit configured to generate a data signal corresponding to the received data; a boosting circuit configured to generate the power voltage based on the voltage of the data drive power source; a buffer unit configured to receive the data signal and to generate a buffered data signal; a switch unit configured to selectively couple the data lines either directly to the data drive power source or to the buffer unit; and a controller configured to control the switch unit.