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US 11,107,400 B2Granted
Pixel, stage circuit and organic light emitting display device having the pixel and the stage circuit
AssigneeSamsung Display Co., Ltd.
InventorsJi Hyun Ka, Won Kyu Kwak, Han Sung Bae
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Abstract
A pixel includes a plurality of transistors and an organic light emitting diode. The transistors include a first transistor to control an amount of current flowing to the organic light emitting diode. Additional transistors are connected to the first transistor or the organic light emitting diode. The first transistor is a Low Temperature Poly-Silicon (LTPS) thin film transistor. One or more of the other transistors are oxide semiconductor transistors.
Claims8
A pixel, comprising:
- a first transistor comprising a first electrode, a second electrode, and a gate electrode connected to a first node;
- a second transistor comprising a first electrode, a second electrode connected to a data line, and a gate electrode connected to a first scan line;
- a storage capacitor comprising a first electrode connected to the first node and a second electrode connected to a second node;
- a third transistor comprising a first electrode connected to the second node, a second electrode connected to an initialization power supply, and a gate electrode
- a fourth transistor comprising a first electrode connected to a first driving power supply, a second electrode connected to the first electrode of the first transistor, and a gate electrode connected to a light emission control line;
- and
- a fifth transistor comprising a first electrode, a second electrode connected to the first node, and a gate electrode connected to a second scan line,
- wherein the fifth transistor is an n-type oxide semiconductor transistor;
- wherein the first transistor, the third transistor, and the fourth transistor are an n-type LTPS transistor;
- and
- wherein the first scan line and the second scan line are separated from each other.
8 more elements
Dependencies are inferred from the claim text.