Quantum dot light emitting devices

A technology of electroluminescent element and manufacturing method, which is applied to the manufacturing of electroluminescent light sources, electrical components, semiconductor/solid-state devices, etc. Life characteristics, effect of improving light emission characteristics
CN101425565AInactive Publication Date: 2009-05-06DAI NIPPON PRINTING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DAI NIPPON PRINTING CO LTD
Publication Date
2009-05-06
Estimated Expiration
Not applicable · inactive patent

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Abstract

A primary object of this invention is to provide a manufacturing method for an EL element, which can facilitate patterning for a luminescent layer containing quantum dots. This method includes: a wettability-changing-layer-forming step for forming a wettability changing layer containing a photocatalyst, on a substrate having a first electrode layer formed thereon, wherein wettability of the wettability-changing layer is changed by an effect of the photocatalyst associated with irradiation with energy; and a wettability-changing-pattern forming step for forming a wettability changing pattern composed of lyophilic regions and liquid-repellent regions, on a surface of the wettability changing layer, by irradiating the wettability changing layer with energy in a patterning manner. Additionally, in this method, a luminescent layer is formed onto each lyophilic region, by coating a luminescent-layer-forming coating liquid containing the quantum dots, around each of which ligands are attached. In this way, the EL element can be obtained.
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Description

[0001] References to related applications

[0002] This patent application enjoys the priority of Japanese application Japanese Patent Application No. 2007-256852 filed on March 28, 2007. The entire disclosure content of this prior application constitutes a part of this specification by reference. technical field

[0003] The present invention relates to a method for manufacturing an electroluminescence (hereinafter sometimes abbreviated as EL) element by patterning a light-emitting layer containing quantum dots using a layer whose wettability is changed by the action of a photocatalyst accompanying energy irradiation and the method. The produced EL element. Background technique

[0004] The EL element is a kind of element in which holes and electrons injected from two opposite electrodes are combined in the light-emitting layer, and the light-emitting material in the light-emitting layer is excited according to its energy, thereby emitting light corresponding to the color ...

Claims

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