Patent ID: 7271785

Claim:
An organic EL display panel comprising: a plurality of pixels formed in substantially a matrix arrangement by a plurality of data lines transmitting data signals and a plurality of scan lines lying at substantially a right angle to the data lines and transmitting scan signals; switching transistors formed in each pixel, the switching transistors having input terminals connected to the data lines and control terminals connected to the scan lines; pixel electrodes provided in the plurality of pixels, each pixel electrode further comprising an embedded impedance element, and a storage capacitor having one end connected to a ground voltage, wherein the switching transistors turn on and off current to the pixel electrodes and, the pixel electrodes emit light when supplied with voltages, which are lowered by the impedance elements, according to data signals inputted through the input terminals of the switching transistors, and wherein each of the pixel electrodes comprises: the storage capacitor having one end grounded and the other end connected to an output terminal of the switching transistor, the storage capacitor charging a driving voltage from the switching transistor; a driving device responding to the data signal input through a control terminal thereof to output the charged driving voltage, which it receives through an input terminal thereof from the storage capacitor, through an output terminal thereof; the impedance element having one end connected to the output terminal of the driving device, which reduces the voltage level of the driving voltage received from the driving device; and an organic EL device connected to the impedance element, wherein the organic EL device is supplied on its opposite end with an organic EL driving voltage from an external device, and thereby emits light according to a difference between the organic EL driving voltage and the reduced driving voltage at the other end of the impedance element.