Pixel, organic light emitting display device including the pixel, and method of driving the pixel

1. A pixel, comprising:

a first organic light emitting diode (OLED);

a second OLED;

a first driving transistor having a first electrode to receive a first power source voltage, a second electrode electrically connected to a first node, and a gate electrode electrically connected to a second node;

a second driving transistor having a first electrode to receive the first power source voltage, a second electrode electrically connected to a third node, and a gate electrode electrically connected to a fourth node;

a first transistor having a first electrode electrically connected to a fifth node, a second electrode electrically connected to the second node, and a gate electrode to receive a first write signal;

a second transistor having a first electrode electrically connected to the fifth node, a second electrode electrically connected to the fourth node, and a gate electrode to receive a second write signal;

a third transistor having a first electrode electrically connected to the first node, a second electrode electrically connected to an anode of the first OLED, and having a gate electrode to receive a first emission control signal;

a fourth transistor having a first electrode electrically connected to the third node, a second electrode electrically connected to the anode of the second OLED, and a gate electrode to receive a second emission control signal;

a fifth transistor having a first electrode electrically connected to a data line, a second electrode electrically connected to the fifth node, and a gate electrode electrically connected to a scan line;

a first storage capacitor having a first electrode to receive the first power source voltage and a second electrode electrically connected to the second node;

a second storage capacitor having a first electrode to receive the first power source and a second electrode electrically connected to the fourth node; and

a holding capacitor having a first electrode electrically connected to the fifth node and a second electrode to receive a second power source, wherein an irradiation direction of first light emitted by the first OLED is substantially equal to an irradiation direction of second light emitted by the second OLED.

2. The pixel as claimed in claim 1 , further comprising:

a first polarizer on the first OLED; and

a second polarizer on the second OLED,

wherein the first light is circularly polarized in a first direction by the first polarizer and the second light is circularly polarized in a second direction by the second polarizer.

3. An organic light emitting display device, comprising:

a driver; and

a display panel to be driven by the driver and including:

a plurality of pixels;

scan lines to transmit scan signals to the pixels;

data lines to transmit data voltages to the pixels;

first write lines to transmit first write signals to the pixels;

second write lines to transmit second write signals to the pixels;

first emission control lines to transmit first emission control signals to the pixels; and

second emission control lines to transmit second emission control signals to the pixels, wherein the pixels include a first pixel that includes:

a first organic light emitting diode (OLED);

a second OLED;

a first driving transistor having a first electrode to receive a first power source voltage, a second electrode electrically connected to a first node, and a gate electrode electrically connected to a second node;

a second driving transistor having a first electrode to receive the first power source voltage, a second electrode electrically connected to a third node, and a gate electrode electrically connected to a fourth node;

a first transistor having a first electrode electrically connected to a fifth node, a second electrode electrically connected to the second node, and a gate electrode to receive a first write signal;

a second transistor having a first electrode electrically connected to the fifth node, a second electrode electrically connected to the fourth node, and a gate electrode to receive a second write signal;

a third transistor having a first electrode electrically connected to the first node, a second electrode electrically connected to an anode of the first OLED, and a gate electrode to receive a first emission control signal;

a fourth transistor having a first electrode electrically connected to the third node, a second electrode electrically connected to the anode of the second OLED, and a gate electrode to receive a second emission control signal;

a fifth transistor having a first electrode electrically connected to one of the data lines, a second electrode electrically connected to the fifth node, and a gate electrode electrically connected to one of the scan lines;

a first storage capacitor having a first electrode to receive the first power source voltage and a second electrode electrically connected to the second node;

a second storage capacitor having a first electrode to receive the first power source voltage and a second electrode electrically connected to the fourth node; and

a holding capacitor having a first electrode electrically connected to the fifth node and a second electrode to receive a second power source, wherein an irradiation direction of first light emitted by the first OLED is substantially equal to an irradiation direction of second light emitted by the second OLED.

4. The display device as claimed in claim 3 , wherein the first pixel includes:

a first polarizer on the first OLED; and

a second polarizer on the second OLED,

wherein the first light is circularly polarized in a first direction by the first polarizer and the second light is circularly polarized in a second direction by the second polarizer.

5. The display device as claimed in claim 3 , wherein the display driver includes:

a timing controller to receive image data and timing signals and to generate timing control signals including a first timing control signal, a second timing control signal, and a data timing control signal based on the timing signals;

a first signal driver to generate the scan signals based on the first timing control signal;

a data driver to generate the data voltages based on the image data and the data timing control signal from the timing controller; and

a second signal driver to generate the first write signal, the second write signal, the first emission control signal, and the second emission control signal.

6. The display device as claimed in claim 5 , wherein:

the first signal driver is to sequentially supply the scan signals to the pixels, and

the second signal driver is to simultaneously supply the first write signal, the second write signal, the first emission control signal, and the second emission control signal to the pixels.

7. An apparatus, comprising:

a first pixel including a first driving transistor coupled to a first light emitter;

a second pixel including a second driving transistor coupled to a second light emitter; and

a holding capacitor connected to the first driving transistor of the first pixel and the second driving transistor of the second pixel, wherein the holding capacitor is to store first data for the first light emitter and is to store second data for the second light emitter at different times, and wherein an irradiation direction of first light emitted by the first light emitter is substantially equal to an irradiation direction of second light emitted by the second light emitter, wherein:

the first and second pixels are coupled to a same scan line,

a scan transistor is connected between the same scan line and the holding capacitor, and

the holding capacitor is to store the first data and the second data based on switching of the scan transistor by scan signals applied at different times.

8. The apparatus as claimed in claim 7 , wherein:

the first and second pixels are coupled to a same data line, and

the holding capacitor is to receive the first data and the second data from the data line.

9. The apparatus as claimed in claim 7 , further comprising:

a first polarizer on the first light emitter, and

a second polarizer on the second light emitter,

wherein the first light is circularly polarized in a first direction by the first polarizer and the second light is circularly polarized in a second direction by the second polarizer.