Patent ID: 7864141

Claim:
A display device comprising a plurality of pixels, each pixel including: a light emitting element; a storage capacitor; a driving transistor that has a control terminal, an input terminal, and an output terminal and supplies a current to the light emitting element to emit light; a first switching transistor supplying a data voltage to the storage capacitor in response to a scanning signal; a second switching transistor diode-connecting the driving transistor in response to a previous scanning signal, wherein an input terminal of the second switching transistor is directly connected to the control terminal of the driving transistor; a third switching transistor supplying a driving voltage to the driving transistor in response to an emission signal; and a fourth switching transistor connecting the storage capacitor to a reference voltage in response to the previous scanning signal, wherein the storage capacitor stores a control voltage depending on a threshold voltage of the driving transistor and a threshold voltage of the light emitting element through the diode-connected driving transistor, and transmits the control voltage and the data voltage to the control terminal of the driving transistor, wherein an output terminal of the third switching transistor is directly connected to the input terminal of the driving transistor, and the third switching transistor and the driving transistor are transistors of the same type, and wherein a first terminal of the storage capacitor is directly connected to an output terminal of the first switching transistor, and a second terminal of the storage capacitor is directly connected to the control terminal of the driving transistor.