Pixel circuit for organic light emitting display and driving method thereof, organic light emitting display

摘要

A pixel circuit for an organic light emitting display includes first, second, third, fourth, fifth, and sixth MOS transistors, a first capacitor, and an organic light emitting diode. The gate electrode of the first MOS transistor receives a first scanning signal. A first electrode of the first MOS transistor receives a data signal. The gate electrode of the third MOS transistor receives a third control signal. The gate electrode of the fourth MOS transistor receives the first scanning signal. The gate electrode of the fifth MOS transistor receives a first control signal. A first electrode of the fifth MOS transistor receives a reference voltage. The gate electrode of the sixth MOS transistor receives a second scanning signal. The first electrode of the sixth MOS transistor receives the reference voltage.

主权项

1. A pixel circuit for an organic light emitting display, the pixel circuit comprising:
an organic light emitting diode; a first MOS transistor, comprising a gate electrode, a first electrode, and a second electrode; a second MOS transistor, comprising a gate electrode, a first electrode, and a second electrode, wherein the first electrode of the second MOS transistor is coupled to a first power supply; a third MOS transistor, comprising a gate electrode, a first electrode, and a second electrode, wherein the first electrode of the third MOS transistor is coupled to the second electrode of the second MOS transistor, and the second electrode of the third MOS transistor is coupled to a second power supply via the organic light emitting diode; a fourth MOS transistor, comprising a gate electrode, a first electrode, and a second electrode, wherein the first electrode of the fourth MOS transistor is coupled to the gate electrode of the second MOS transistor, and the second electrode of the fourth MOS transistor is coupled to the second electrode of the second MOS transistor; a fifth MOS transistor, comprising a gate electrode, a first electrode, and a second electrode; a sixth MOS transistor, comprising a gate electrode, a first electrode, and a second electrode, wherein the second electrode of the sixth MOS transistor is coupled to the second electrode of the third MOS transistor; and a first capacitor, comprising first and second terminals, wherein the first terminal of the first capacitor is coupled to the second electrode of the first MOS transistor and to the second electrode of the fifth MOS transistor, and the second terminal is coupled to the gate electrode of the second MOS transistor and to the first electrode of the fourth MOS transistor, wherein the gate electrode of the first MOS transistor receives a first scanning signal, the first electrode of the first MOS transistor receives a data signal, the gate electrode of the third MOS transistor receives a third control signal, the gate electrode of the fourth MOS transistor receives the first scanning signal, the gate electrode of the fifth MOS transistor receives a first control signal, the first electrode of the fifth MOS transistor receives a reference voltage, the gate electrode of the sixth MOS transistor receives a second scanning signal, and the first electrode of the sixth MOS transistor receives the reference voltage, and wherein the third control signal and the first control signal do not have the same start and end timings.