ORGANIC LIGHT-EMITTING DIODE DISPLAY AND METHOD OF DRIVING THE SAME

摘要

An organic light-emitting diode (OLED) display and a method of driving the same are disclosed. In one aspect, the method includes displaying an image on a display panel based at least in part on a first power voltage provided through a first power line and a second power voltage having a first voltage level provided through a second power line. The display panel is configured to receive the first and second power voltages from a power supply unit. The method also includes providing the second power voltage having a second voltage level higher than the first voltage level to the display panel through the second power line, detecting a second power line current flowing through the second power line when the second power voltage has the second voltage level, and turning off the power supply unit when the second power line current is detected.

主权项

1. An organic light-emitting diode (OLED) display driven by a digital driving technique, comprising:
a display panel including a plurality of pixels; a scan driver configured to provide a scan signal to the display panel through a scan line; a data driver configured to provide a data signal to the display panel through a data line, wherein the data signal has one of first and second logic levels; a power supply unit configured to provide first and second power voltages respectively through first and second power lines so as to i) transmit the second power voltage having a first voltage level to the display panel during an emission period such that the pixels emit light and ii) transmit the second power voltage having a second voltage level higher than the first voltage level to the display panel during a non-emission period such that the pixels do not emit light; a first sensor configured to detect a second power line current flowing through the second power line during the non-emission period; a power controller configured to determine the non-emission period and turn off the power supply unit based at least in part on a current detection signal output from the first sensor; and a timing controller configured to control the scan driver, the data driver, the power supply unit and the power controller, wherein the non-emission period is substantially periodic or corresponds to when an abnormal operation of the display panel is detected.