Organic light-emitting display and method of manufacturing the same
AssigneeSamsung Display Co., Ltd.
InventorTae-Kyung Ahn
Life of this patent
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Abstract
An organic light emitting display (OLED) device is disclosed. The OLED device includes a thin-film transistor (TFT), which includes a gate electrode; an active layer insulated from the gate electrode; source and drain electrodes insulated from the gate electrode and contacting the active layer; and an insulation layer interposed between the source and drain electrodes and the active layer; and an organic light-emitting element electrically connected to the TFT, wherein the insulation layer includes a first insulation sub-layer contacting the active layer; and a second insulation sub-layer formed on the first insulation sub-layer.
Claims20
An organic light-emitting display (OLED) device comprising:
- a substrate;
- a thin-film transistor (TFT) comprising:
- a gate electrode formed over the substrate;
- a gate insulation layer formed on the gate electrode;
- an active layer formed over the gate insulation layer and insulated from the gate electrode by the gate insulation layer;
- an insulation layer formed between the active layer and the source electrode, and further formed between the active layer and the drain electrode;
- source and drain electrodes insulated from the gate electrode and contacting the active layer;
- and
- wherein the insulation layer electrically insulates the active layer from the source and drain electrodes, and comprises a first insulation sub-layer contacting at least a portion of the active layer;
- and a second insulation sub-layer formed on the first insulation sub-layer and contacting the source and drain electrodes;
- and
- an organic light-emitting element formed over the TFT and electrically connected to the TFT.
A method of manufacturing an organic light-emitting display (OLED) device, the method comprising:
- forming a gate electrode partially on a substrate;
- forming a gate insulation layer on the gate electrode;
- forming an active layer on at least part of the gate insulation layer;
- forming an insulation layer over at least a portion of the active layer, wherein the insulation layer comprises a first insulation sub-layer contacting the active layer and a second insulation sub-layer contacting the first insulation sub-layer;
- forming source and drain electrodes on the second insulation sub-layer, wherein the source and drain electrodes contact the active layer;
- and
- forming an organic light-emitting element electrically connected to one of the source and drain electrodes, wherein the organic light-emitting element is formed over the gate electrode, the gate insulation layer, the active layer, the insulation layer and the source and drain electrodes.
An organic light-emitting display device comprising:
- a substrate;
- an organic light-emitting element;
- and
- a thin-film transistor (TFT) formed between the substrate and the organic light-emitting element, and electrically connected to the organic light-emitting element, the TFT comprising:
- a gate electrode formed over the substrate,
- a gate insulation layer formed over the gate electrode,
- an active layer formed over the gate insulation layer and insulated from the gate electrode by the gate insulation layer,
- a source electrode contacting the active layer;
- a drain electrode contacting the active layer;
- and
- an insulation layer formed over the gate insulation layer and interposed between the source electrode and the active layer and further interposed between the drain electrode and the active layer;
- the insulation layer comprising:
- a first insulation sub-layer formed contacting the active layer;
- and
- a second insulation sub-layer contacting the first insulation sub-layer, wherein the second insulation sub-layer has a higher density than the first insulation sub-layer.
Dependencies are inferred from the claim text.