Organic light emitting display device comprising a metal diffusion medium layer and method of manufacturing the same
First Claim
1. An organic light emitting display device comprising:
- a thin-film transistor (TFT), which comprises an active layer, a gate electrode, a source electrode and a drain electrode;
an organic electroluminescent device, which is electrically connected to the TFT, the organic electroluminescent device comprising;
a pixel electrode, which is formed on the same layer as the gate electrode;
an intermediate layer disposed on the pixel electrode and including an organic light emitting layer; and
a counter electrode disposed on the intermediate layer; and
a capacitor, which comprises;
a bottom electrode, which is formed on the same layer and of the same material as the active layer, and is doped with an impurity;
a top electrode, which is formed on the same layer as the gate electrode; and
a metal diffusion medium layer, which is formed on the same layer as the source and drain electrodes and is connected to the bottom electrode, wherein a plurality of slits is formed in the bottom electrode, and the metal diffusion medium layer is connected to the bottom electrode between the plurality of slits.
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Abstract
Provided are an organic light emitting display device and a method of manufacturing the same. The organic light emitting display device includes a thin-film transistor (TFT), which includes an active layer, a gate electrode, and source/drain electrodes; an organic electroluminescent device electrically connected to the TFT and includes a pixel electrode formed on the same layer as the gate electrode, an intermediate layer including an organic light emitting layer, and a counter electrode that are stacked in the order stated; and a capacitor, which includes a bottom electrode, which is formed on the same layer and of the same material as the active layer and is doped with an impurity; a top electrode formed on the same layer as the gate electrode; and a metal diffusion medium layer formed on the same layer as the source/drain electrodes and is connected to the bottom electrode.
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Citations
17 Claims
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1. An organic light emitting display device comprising:
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a thin-film transistor (TFT), which comprises an active layer, a gate electrode, a source electrode and a drain electrode; an organic electroluminescent device, which is electrically connected to the TFT, the organic electroluminescent device comprising; a pixel electrode, which is formed on the same layer as the gate electrode; an intermediate layer disposed on the pixel electrode and including an organic light emitting layer; and a counter electrode disposed on the intermediate layer; and a capacitor, which comprises; a bottom electrode, which is formed on the same layer and of the same material as the active layer, and is doped with an impurity; a top electrode, which is formed on the same layer as the gate electrode; and a metal diffusion medium layer, which is formed on the same layer as the source and drain electrodes and is connected to the bottom electrode, wherein a plurality of slits is formed in the bottom electrode, and the metal diffusion medium layer is connected to the bottom electrode between the plurality of slits. - View Dependent Claims (2, 3, 4)
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5. An organic light emitting display device comprising:
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a thin-film transistor (TFT), which comprises an active layer, a gate electrode, a source electrode and a drain electrode; an organic electroluminescent device, which is electrically connected to the TFT, the organic electroluminescent device comprising; a pixel electrode, which is formed on the same layer as the gate electrode; an intermediate layer disposed on the pixel electrode and including an organic light emitting layer; and a counter electrode disposed on the intermediate layer; and a capacitor, which comprises; a bottom electrode, which is formed on the same layer and of the same material as the active layer, and is doped with an impurity; a top electrode, which is formed on the same layer as the gate electrode; and a metal diffusion medium layer, which is formed on the same layer as the source and drain electrodes and is connected to the bottom electrode, wherein a groove is formed in the bottom electrode, and the metal diffusion medium layer is connected to the bottom electrode via the groove. - View Dependent Claims (6, 7, 8, 9, 12, 15)
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10. A method of manufacturing an organic light emitting display device, the method comprising:
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forming an active layer of a thin-film transistor (TFT) and a bottom electrode of a capacitor on a substrate in a first masking operation; forming electrode patterns for forming a gate electrode on the active layer, a pixel electrode on the substrate, and a top electrode of the capacitor on the bottom electrode in a second masking operation; forming an interlayer insulation layer, which comprises openings for exposing two opposite ends of the active layer, a portion of the pixel electrode, a portion of the top electrode, and a portion of the bottom electrode in a third masking operation; forming source and drain electrodes, which contact the two opposite ends of the active layer and the portion of the pixel electrode exposed by the openings, a metal diffusion medium layer, which contacts the portion of the bottom electrode exposed by the openings, and etching the pixel electrode and the top electrode in a fourth masking operation; and forming a pixel defining layer, which exposes the pixel electrode in a fifth masking operation, wherein the organic light emitting display device comprising the thin-film transistor, an organic electroluminescent device, and the capacitor, the thin-film transistor comprising the active layer, the gate electrode, the source electrode and the drain electrode, the organic electroluminescent device being electrically connected to the thin-film transistor, the organic electroluminescent device comprising; the pixel electrode, which is formed on the same layer as the gate electrode; an intermediate layer disposed on the pixel electrode and including an organic light emitting layer; and a counter electrode disposed on the intermediate layer; and
the capacitor comprising;the bottom electrode, which is formed on the same layer and of the same material as the active layer, and is doped with an impurity; the top electrode, which is formed on the same layer as the gate electrode; and the metal diffusion medium layer, which is formed on the same layer as the source and drain electrodes and is connected to the bottom electrode, wherein a plurality of slits is formed in the bottom electrode, and the metal diffusion medium layer is connected to the bottom electrode between the plurality of slits. - View Dependent Claims (11, 13, 14, 16, 17)
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Specification