Patent ID: 7667673

Claim:
An organic electroluminescent (EL) display panel comprising a display element including a pixel electrode and a pixel circuit which includes: a first transistor having a main electrode and a control electrode, and configured to output a current corresponding to a voltage between the main electrode and the control electrode to the pixel electrode of the display element; a second transistor having a main electrode and a control electrode coupled to the control electrode of the first transistor; and a third transistor for applying a data line voltage from a data line to the second transistor in response to a select signal provided by a current scan line, the organic EL display panel comprising: a power electrode line substantially in parallel with the data line, and coupled to the main electrode of the first transistor; and a control electrode line comprising a first portion substantially aligned with and coupled to the control electrode of the first transistor and the control electrode of the second transistor and a second portion coupled to the first portion, the second portion extending substantially parallel to the power electrode line and overlapping at least a portion of the power electrode line for at least a whole length of the pixel electrode to form a capacitor between the main electrode and the control electrode of the first transistor, wherein the control electrode line is coupled to the main electrode of the second transistor so as to diode-connect the second transistor, wherein a channel of the first transistor and a channel of the second transistor are formed substantially in parallel with the current scan line.