Driver with separate power sources and display device using the same

A display device, comprising:

• a display including a plurality of pixels connected to a plurality of scan lines transmitting a plurality of scan signals, a plurality of data lines transmitting a plurality of data signals, and a plurality of light emission control lines transmitting a plurality of light emission control signals;
• a scan driver transmitting the plurality of scan signals to the plurality of scan lines;
• a data driver transmitting the plurality of data signals to the plurality of data lines;
• and
• a light emission control driver transmitting the plurality of light emission control signals to the plurality of light emission control lines, wherein:
• the scan driver or the light emission control driver includes:
• at least one logic circuit to receive a plurality of clock signals and a plurality of input signals to generate and sequentially transmit output signals to a plurality of pixel rows included in the display, and
• a buffer to receive a plurality of control signals to generate and transmit the output signals of a same waveform to the plurality of pixels included in the display, and
• the at least one logic circuit is supplied with a logic power source voltage and the buffer is supplied with a buffer power source voltage that is different from the logic power source voltage, wherein the control signals to be received by the buffer are independent from the clock signals to be received by the at least one logic circuit and are to control a width of each of the output signals transmitted from the buffer.