Organic light emitting diode display, driving method thereof, and manufacturing method thereof
An organic light emitting diode display includes a semiconductor pattern which includes a plurality of channel regions. A first gate insulating layer is on the semiconductor pattern, a first gate conductive layer is on the first gate insulating layer, a second gate insulating layer is on the first gate conductive layer, and a second gate conductive layer is on the second gate insulating layer. The channel regions include a first channel region that overlaps the first gate conductive layer and a second channel region that does not overlap the first gate conductive layer. The first channel region and the second channel region have different doping concentrations.
1. An organic light emitting diode display, comprising:
a driving transistor including a driving gate electrode coupled to a storage capacitor;
a first switching transistor including a first source electrode coupled to a driving drain electrode of the driving transistor; and
a second switching transistor including a second drain electrode coupled to a driving source electrode of the driving transistor, wherein a second source electrode of the second switching transistor receives a driving voltage, and wherein a channel region of the first switching transistor and a channel region of the second switching transistor have different doping concentrations.
2. The display as claimed in claim 1 , wherein the doping concentrations of the channel region of the first switching transistor and a channel region of the driving transistor are substantially equal.
3. The display as claimed in claim 2 , further comprising:
a first gate conductive layer including a portion between a gate electrode of the first switching transistor and the channel region of the first switching transistor.
4. The display as claimed in claim 3 , wherein the first gate conductive layer includes a portion between the driving gate electrode of the driving transistor and the channel region of the driving transistor.