| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an organic electroluminescent display device for preventing abnormal light emission at initial driving thereof, and to provide a driving method thereof. <P>SOLUTION: The organic electroluminescent display device comprises: a pixel part configured to control current between a pixel power supply and a ground power supply according to data signals and scan signals, wherein luminance is expressed according to the amount of the current; and a DC-DC converter configured to output the pixel power supply and the ground power supply, wherein the ground power supply is output after a delay relative to the pixel power supply. The DC-DC converter includes: a first power supply unit configured to generate the pixel power supply after receiving enable signals and boosting prescribed voltage; a second power supply unit configured to output the ground power supply after receiving the enable signals and dropping the prescribed voltage; a stabilization capacitor coupled to an output terminal of the first power supply unit and configured to stabilize the output voltage of the first power supply unit; and a delay means configured to delay the enable signals for a prescribed time before transferring them to the second power supply unit. <P>COPYRIGHT: (C)2009,JPO&INPIT |
