Electroluminescent device

A technology of electroluminescent devices and light-emitting functional layers, which is applied in the direction of electric solid devices, electrical components, semiconductor devices, etc., can solve the problems of short service life, etc., and achieve the goals of improving service life, improving heat dissipation performance, and improving water and oxygen barrier performance Effect

Inactive Publication Date: 2009-07-01
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an electroluminescent device with a long service life in order to overcome the shortcoming of the short service life of the existing electroluminescent device

Method used

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Examples

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Embodiment 1

[0035] This embodiment is used to illustrate the electroluminescent device and its manufacturing method provided by the present invention.

[0036] In a glove box with a water and oxygen content of less than 1ppm and a pressure of 2 atmospheres (wherein the volume ratio of nitrogen and hydrogen is 8:1), 8 parts by weight of CaO with a particle diameter of 50-60 nanometers and 92 parts by weight of CaO A uniform mixture of UV-curable glue (UV STRCTL 352, Loctite Company) was spin-coated onto a luminescent functional layer with a length of 4 cm and a width of 3 cm. The substrate of the luminescent functional layer was an ITO glass substrate, and the organic material layer was 40 mm thick. Nano-N, N'-diphenyl-N, N'-bis(N-phenyl-1-naphthylamine)-biphenylenediamine layer and (8-hydroxyquinoline)-(water A composite layer of a gallium(III) compound layer with a polyphenylaldehyde o-aniline phenol), and a cathode layer of an alloy layer of Mg:Ag (weight ratio 10:1) with a thickness of...

Embodiment 2

[0044] This embodiment is used to illustrate the electroluminescent device and its manufacturing method provided by the present invention.

[0045] In a glove box with a water and oxygen content of less than 1ppm and a pressure of 1.5 atmospheres (in which the volume ratio of nitrogen and hydrogen is 7:1), 10 parts by weight of BaO with a particle diameter of 50-60 nanometers and 90 parts by weight of methyl A homogeneous mixture of methyl acrylate was spin-coated onto an electroluminescent sheet with a length of 4 cm and a width of 3 cm. The substrate of the electroluminescent sheet was an ITO glass substrate, and the organic material layer was 40 nm of N, N'-diphenyl -N,N'-bis(N-phenyl-1-naphthylamine)-biphenylenediamine layer and (8-hydroxyquinoline)-(salicylaldehyde-o-anilinephenol)gallium ( III) A composite layer of layers, the cathode layer is an alloy layer of Mg:Ag (weight ratio 10:1) with a thickness of 200 nanometers. Then UV cured to form a 95nm polymer layer; then...

Embodiment 3

[0047] This embodiment is used to illustrate the electroluminescent device and its manufacturing method provided by the present invention.

[0048] In a glove box with a water and oxygen content of less than 1ppm and a pressure of 1.8 atmospheres (in which the volume ratio of nitrogen and hydrogen is 10:1), 9 parts by weight of MgO with a particle diameter of 50-55 nanometers and 91 parts by weight of methyl A homogeneous mixture of ethyl acrylate was spin-coated onto an electroluminescent sheet with a length of 4 cm and a width of 3 cm. The substrate of the electroluminescent sheet was an ITO glass substrate, and the organic material layer was a 40-nm-thick N,N'-di Phenyl-N,N'-bis(N-phenyl-1-naphthylamine)-biphenylenediamine layer and (8-hydroxyquinoline)-(salicylaldehyde-o-anilinephenol) compound with a thickness of 40 nm The composite layer of the gallium (III) layer, the cathode layer is an alloy layer of Mg:Ag (weight ratio 10:1) with a thickness of 200 nm. Then UV cured...

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Abstract

An electroluminescent device comprises a light emitting function layer and a package layer, wherein the function layer includes a substrate, an organic material layer and a cathode layer between the substrate and the organic material layer; the package layer includes a polymer layer contacting with the cathode layer, and a ceramic layer; and the polymer layer contains polymer and a drying agent. By adopting the polymer layer containing the drying agent and the polymer, the electroluminescent device has good water-oxygen barrier property, reduced thickness, improved heat dissipation performance, prolonged service life and improved market value. In addition, a protective cover is added to form a sealed space filled with the mixture of nitrogen and hydrogen together with the substrate according to the preferred embodiment, so as to further improve the heat dissipation performance, the water-oxygen barrier property and the service life of the device.

Description

technical field [0001] The present invention relates to an electroluminescent device. Background technique [0002] With the development of multimedia technology and the advent of the information society, the performance requirements of flat panel displays are getting higher and higher. Electroluminescent technology has great market potential, among which electroluminescent display is a brand new display technology, which has the advantages of no backlight, wide viewing angle, uniform image quality, fast response speed, simple process, and can be made into flexible panels , thin and short, etc., has a broad market prospect, and is one of the very competitive future flat panel display technologies. However, the service life of the electroluminescent display is relatively short. Although it can meet the needs of small-sized and short-term products such as mobile phones, digital cameras, and car audio, it still needs to be replaced by liquid crystal displays to become the main...

Claims

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Application Information

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IPC IPC(8): H01L51/50H01L51/54C09K3/10
Inventor 罗晓程文东
Owner BYD CO LTD
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