Fabrication method of an organic electroluminescent devices
First Claim
1. A method for manufacturing an organic electroluminescent device including a plurality of organic electroluminescent (EL) elements and a plurality of organic field effect transistors to drive thereof comprising the steps of:
- forming a semitransparent electrode layer of the organic EL element and a gate electrode of the organic transistor on a same transparent plastic substrate, being of the space-apart distance between said adjacent electrodes;
depositing an organic gate insulating layer on the gate electrode of the organic transistor;
forming an organic semiconductor layer used as an active layer of the transistor on the organic gate insulating layer;
forming a source and drain electrodes on the organic semiconductor layer, wherein one terminal of the drain electrode is electrically connected to the semitransparent electrode layer of the organic EL element;
forming an organic electroluminescent layer on the semitransparent electrode layer of the EL element and a part of the drain electrode of the organic transistor; and
forming an upper electrode on the organic electroluminescent layer.
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Abstract
A method for manufacturing an organic EL display including an organic EL elements and an organic field effect transistors being integrated on a same substrate is disclosed. A semitransparent electrode layer of the organic EL element and a gate electrode of the organic transistor are formed on a same transparent plastic substrate. An organic gate insulating layer is deposited on the gate electrode and an organic semiconductor layer is formed on the organic gate insulating layer. A source and drain electrodes is formed on the organic semiconductor layer. An organic EL layer is formed on the semitransparent electrode layer and a part of the drain electrode. The organic semiconductor layer can be made of a charge transfer complex or a thiophene derivative polymer. The resultant EL device is capable of mechanically bent, and then is readily adaptable for use in flexible displays.
179 Citations
7 Claims
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1. A method for manufacturing an organic electroluminescent device including a plurality of organic electroluminescent (EL) elements and a plurality of organic field effect transistors to drive thereof comprising the steps of:
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forming a semitransparent electrode layer of the organic EL element and a gate electrode of the organic transistor on a same transparent plastic substrate, being of the space-apart distance between said adjacent electrodes; depositing an organic gate insulating layer on the gate electrode of the organic transistor; forming an organic semiconductor layer used as an active layer of the transistor on the organic gate insulating layer; forming a source and drain electrodes on the organic semiconductor layer, wherein one terminal of the drain electrode is electrically connected to the semitransparent electrode layer of the organic EL element; forming an organic electroluminescent layer on the semitransparent electrode layer of the EL element and a part of the drain electrode of the organic transistor; and forming an upper electrode on the organic electroluminescent layer. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification