Pixel and organic light emitting display device having the pixel
AssigneeSamsung Display Co., Ltd.
InventorsChong Chui Chai, Dong Woo Kim, Kyoung Ju Shin, Bo Yong Chung
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Abstract
A pixel includes a plurality of transistors, a storage capacitor, and an organic light emitting diode. A first transistor controls the amount of current from a first driving power source to the organic light emitting diode based on a data voltage. A second transistor is connected to a data line and is turned on based on a scan signal. A third transistor coupled to the first transistor and is turned on based on the scan signal. A first stabilizing transistor is coupled to the third transistor or between the first and third transistors and is turned off when the third transistor is turned off.
Claims19
A pixel, comprising:
- an organic light emitting diode;
- a first transistor to control an amount of current flowing from a first driving power source to a second driving power source, via the organic light emitting diode, based on a voltage of a first node;
- a second transistor coupled between a data line and a second node, the second transistor to be turned on when a scan signal is supplied to a scan line;
- a storage capacitor coupled between the first node and the second node;
- and
- a stabilizing transistor coupled between the second transistor and the second node, wherein the first transistor and the second transistor are N-type poly-silicon semiconductor transistors and the stabilizing transistor is an N-type oxide semiconductor transistor.
A pixel, comprising:
- an organic light emitting diode;
- a first transistor to control an amount of current flowing from a first driving power source to a second driving power source, via the organic light emitting diode, based on a voltage of a first node;
- a second transistor coupled between a data line and a second node, the second transistor to be turned on when a scan signal is supplied to a scan line;
- a storage capacitor coupled between the first node and the second node;
- a third transistor coupled between the second node and an anode of the organic light emitting diode, the third transistor to be turned off when a first light emitting control signal is supplied to a first emitting control line;
- and
- a stabilizing transistor coupled between the data line and the second transistor, wherein the first transistor and the second transistor are N-type poly-silicon semiconductor transistors and the stabilizing transistor is an N-type oxide semiconductor transistor.
Dependencies are inferred from the claim text.