Patent ID: 8848007

Claim:
An organic light emitting diode (OLED) display comprising: a data driving circuit configured to output a data voltage to the display panel; a scan driving circuit configured to sequentially output a scan pulse synchronized with the data voltage to a display panel; and a timing controller configured, to control the scan driving circuit and the data driving circuit in a normal mode when timing signals, a built-in self test (BIST) signal, a multicolor data, a voltage controlled oscillator (VCO) clock, and multicolor data are inputted, wherein the timing signals comprise a clock and a data enable, and to control the scan driving circuit and the data driving circuit in a current saving mode when the multicolor data are not inputted, wherein the BIST signal controls the scan timing control signal (SCS) and the data timing control signal (DCS) and allows the display panel to display a pattern image or a black image in the current saving mode.