ORGANIC LIGHT EMITTING DISPLAY DEVICE AND DRIVING METHOD THEREOF

摘要

The present invention relates to an organic electroluminescent display device capable of stably compensating a threshold voltage of a driving transistor. The organic electroluminescent display device of the present invention comprises: pixels each of which includes a driving transistor located on an intersection of scan lines and data lines, and initiating a gate electrode to a voltage of initialization power before a data signal is supplied; power lines which are connected to the pixels in a row direction in parallel to the data lines; and an initialization power generating unit to supply initialization power to the pixels while passing through the power lines, wherein the initialization power generating unit controls a voltage value of the initialization power supplied to each of the pixels in correspondence to a gray scale of the data signal to be supplied to each of the pixels.