Organic light-emitting display device
AssigneeSamsung Display Co., Ltd.
InventorsYong Jae Kim, Jin Jeon
Life of this patent
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Abstract
An organic light-emitting display device including a plurality of pixels. Each of the pixels includes an organic light-emitting diode (OLED), a driving transistor, which has a control electrode connected to a first node, an input electrode connected to a second node, and an output electrode connected to the third node and provides a driving current to the OLED in accordance with a voltage of the control electrode, a sustain capacitor, which is connected to the first node, a first transistor, which controls whether the first and third nodes are to be connected, and a compensation transistor, which has both an input electrode and an output electrode connected to the first node.
Claims20
An organic light-emitting display device comprising a plurality of pixels, wherein each of the pixels comprises:
- an organic light-emitting diode (OLED);
- a driving transistor having a control electrode connected to a first node, an input electrode connected to a second node, and an output electrode connected to a third node the driving transistor being configured to provide a driving current to the OLED;
- a sustain capacitor connected to the first node;
- a first transistor configured to control whether the first and third nodes are to be connected;
- and
- a compensation transistor having both an input electrode and an output electrode directly connected to the first node.
An organic light-emitting display device comprising:
- a substrate;
- a buffer layer disposed on the substrate;
- a first semiconductor layer disposed on the buffer layer;
- a first insulating layer disposed on the first semiconductor layer and the buffer layer;
- a second insulating layer disposed on the first insulating layer;
- a second semiconductor layer disposed on the second insulating layer;
- a third insulating layer disposed on the second semiconductor layer and the second insulating layer;
- a fourth insulating layer disposed on the third insulating layer;
- a passivation layer disposed on the fourth insulating layer;
- a planarization layer disposed on the passivation layer;
- a plurality of OLEDs disposed on the planarization layer
- a pixel defining layer disposed on the planarization layer, the pixel defining layer defining a plurality of pixels, each pixel containing one of the plurality of OLEDs,
- wherein:
- an active layer of a driving transistor, in which the driving transistor is configured to provide a driving current to the OLED, is the first semiconductor layer;
- an active layer of a first transistor, in which the first transistor is directly connected to an output electrode and a control electrode of the driving transistor, is the second semiconductor layer;
- and
- an active layer of a compensation transistor, in which the compensation transistor has both an input electrode and an output electrode connected to a control electrode of the driving transistor, is the second semiconductor layer.
Dependencies are inferred from the claim text.