Organic electroluminescent display device and patterning method
OwnerAtsushi Matsunaga, Masaya Nakayama +1inventors
InventorsAtsushi Matsunaga, Masaya Nakayama, Atsushi Tanaka
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Abstract
An organic electroluminescent display device includes a driving TFT and pixels which are formed by organic electroluminescent elements and provided in a pattern on a substrate of the TFT. The driving TFT includes at least a substrate, a gate electrode, a gate insulating film, an active layer, a source electrode, and a drain electrode; the driving TFT further includes a resistive layer between the active layer and at least one of the source electrode and the drain electrode; and the pixels are formed in a pattern by a laser transfer method. A patterning method by a laser transfer method for producing the fine pixels is also provided.
Claims16
An organic electroluminescent display device comprising at least a driving thin film transistor and pixels which are formed by organic electroluminescent elements and are provided in a pattern on a substrate of the TFT,
- wherein the driving TFT includes at least a substrate, a gate electrode, a gate insulating film, an active layer, a source electrode, and a drain electrode;
- the driving TFT further includes a resistive layer between the active layer and at least one of the source electrode and the drain electrode;
- and the pixels are formed in a pattern by a laser transfer method.
An organic electroluminescent display device patterning method of patterning pixels formed by organic electroluminescent elements on a substrate of a driving transistor, the method comprising:
- forming a donor sheet containing at least a layer that absorbs an electromagnetic wave and converts it to heat, and forming a transfer layer containing an organic electroluminescent material on the donor sheet;
- bringing the transfer layer side of the donor sheet into contact with a pixel-forming surface of the substrate;
- and
- selectively irradiating the donor sheet with a laser so as to thermally melt the transfer layer and so as to transfer the organic electroluminescent material onto the substrate,
- wherein the driving TFT includes at least a substrate, a gate electrode, a gate insulating film, an active layer, a source electrode, and a drain electrode;
- the driving TFT further includes a resistive layer between the active layer and at least one of the source electrode and the drain electrode.
Dependencies are inferred from the claim text.