Organic light emitting diode display

An organic light emitting diode (OLED) display comprising:

• a plurality of pixels formed on a substrate and respectively including a plurality of subpixels of first to third colors;
• a first resistor provided on the substrate in a form of an electrical line having a resistance and applied with a first highest reference voltage and a first lowest reference voltage at lateral ends of the first resistor, respectively;
• a second resistor provided on the substrate in a form of an electrical line having a resistance and applied with a second highest reference voltage and a second lowest reference voltage at lateral ends of the second resistor, respectively;
• a third resistor provided on the substrate in a form of an electrical line having a resistance, and applied with a third highest reference voltage and a third lowest reference voltage at lateral ends of the third resistor, respectively;
• a predetermined number of first voltage selectors formed on the substrate, coupled to the first resistor through at least one first switch, for selecting a first reference voltage using the first switch;
• a predetermined number of second voltage selectors formed on the substrate, coupled to the second resistor through at least one second switch, for selecting a second reference voltage using the second switch;
• a predetermined number of third voltage selectors formed on the substrate, coupled to the third resistor through at least one third switch, for selecting a third reference voltage using the third switch;
• and
• a data driver formed on the substrate, for changing video signals respectively corresponding to the plurality of subpixels to data voltages on the basis of the first to third reference voltages, and respectively applying the data voltages to the plurality of subpixels.

A method of providing a video signal to an OLED display, the method comprising:

• providing a plurality of pixels, each of the pixels comprising at least one OLED;
• providing a plurality of reference voltages adjusted for the at least one OLED;
• converting a digital video signal into an analog video signal, using the at least one of the reference voltages;
• and
• providing the analog video signal to the plurality of pixels.