Patent ID: 9558692
Date: 2017-01-31
CPC Classifications: G09G

Claim:
1. An organic light emitting display device comprising: a display unit comprising pixels coupled to scan fines and data lines; first and second power lines coupled to the pixels; a DC-DC converter configured to output first and second power sources to the pixels via the first and second power lines, respectively; and a short-circuit-sensing circuit configured to detect whether a short-circuit between the first and second power lines occurs, and configured to control an operation of the DC-DC converter when the short-circuit is detected, wherein voltage levels of the first and second power sources are configured to be changed in a frame period, the frame period comprising a reverse voltage application period in which the voltage level of the second power source is higher than that of the first power source, and wherein the short-circuit-sensing circuit is configured to detect whether a reverse current is generated during a given period to detect the short-circuit, and is configured to output a disable control signal to the DC-DC converter when the reverse current is detected.