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A kind of preparation method of AC electroluminescent device

An alternating current and electroluminescence technology, applied in electroluminescence light sources, electric light sources, electrical components, etc., can solve the problems of low luminous efficiency of alternating current electroluminescence devices, low dielectric constant of dielectric materials, and poor stretchability. , to achieve the effect of low elastic modulus, large dielectric constant and large electric deformation

Inactive Publication Date: 2018-06-12
湖州奇奇机电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the currently commonly used AC electroluminescent devices, the stability of the ITP electrode is poor, the stretchability is not good, and the dielectric material used in the dielectric layer has a low dielectric constant, a large dielectric loss, and a small electro-induced deformation, which makes the AC electroluminescence The luminous efficiency of the device is low, the service life is short, and the stability is poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A method for preparing an AC electroluminescent device, comprising the following steps:

[0031] (1) Preparation of flexible ionic conductors

[0032] Mix and stir acrylic acid and water, stir and dissolve thoroughly to obtain an acrylic acid solution with a mass fraction of 5%, then add lithium chloride to the acrylic acid solution, add a crosslinking agent, an initiator and a catalyst, and mix evenly to obtain a mixed solution, then Pour the mixed solution into a glass plate mold with a silica gel gasket, put it in an incubator and heat it for 1 hour to obtain a hydrosol doped with lithium chloride, and cut the hydrogel into a round or long strip as required flexible ion conductor; wherein, the ratio of acrylic acid, crosslinking agent, initiator, and catalyst is 100:0.0010.001:0.003;

[0033] (2) Preparation of dielectric elastomer

[0034] a) adjusting the pH of the water to 8.5 with Tris hydroxymethylaminomethane solid, adding dopamine to obtain a dopamine aqueou...

Embodiment 2

[0041] A method for preparing an AC electroluminescent device, comprising the following steps:

[0042] (1) Preparation of flexible ionic conductors

[0043] Mix and stir ethylene glycol and water, stir and dissolve thoroughly to obtain an ethylene glycol solution with a mass fraction of 10%, then add sodium chloride, crosslinking agent, initiator and catalyst to the ethylene glycol solution, and mix well Get the mixed solution, then pour the mixed solution into a glass plate mold with a silica gel gasket, put it in a constant temperature box and heat it for 5 hours to get a hydrosol doped with sodium chloride, and cut the hydrogel into a circle as needed Shaped or strip-shaped flexible ion conductor; wherein, the dosage ratio of ethylene glycol, crosslinking agent, initiator, and catalyst is 100:0.05:0.005:0.06;

[0044] (2) Preparation of dielectric elastomer

[0045] a) adjusting the pH of the water to 8.5 with Tris hydroxymethylaminomethane solid, adding dopamine to obta...

Embodiment 3

[0052] A method for preparing an AC electroluminescent device, comprising the following steps:

[0053] (1) Preparation of flexible ionic conductors

[0054] Mix and stir acrylamide and water, stir and dissolve thoroughly to obtain an acrylamide solution with a mass fraction of 6%, then add calcium chloride to the acrylamide solution, add a crosslinking agent, an initiator and a catalyst, and mix evenly to obtain a mixed solution, and then pour the mixed solution into a glass plate mold with a silica gel gasket, put it in an incubator and heat it for 2 hours to obtain a hydrosol doped with calcium chloride, and cut the hydrogel into a circle or A strip-shaped flexible ion conductor; wherein, the dosage ratio of calcium chloride, cross-linking agent, initiator, and catalyst is 100:0.008:0.002:0.01;

[0055] (2) Preparation of dielectric elastomer

[0056] a) adjusting the pH of the water to 8.5 with Tris hydroxymethylaminomethane solid, adding dopamine to obtain a dopamine aq...

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Abstract

The invention discloses a preparation method for an AC electroluminescence device, and the method comprises the following steps: firstly preparing a flexible ionic conductor through hydrosol doped with dissociable metal salt; secondly selecting polydopamine to wrap high-dielectric ceramic particles, carrying out the grafting of oxidized graphene on the surface of the polydopamine, carrying out the reduction of the oxidized graphene through a chemical reduction method, and obtaining a dielectric elastomer with the surface of the polydopamine being provided with the oxidized graphene in a grafting manner; finally combining the flexible ionic conductor, the dielectric elastomer, the AC electroluminescence device, the dielectric elastomer and the flexible ionic conductor sequentially, and obtaining the AC electroluminescence device in a sandwich structure, wherein one flexible ionic conductor layer is in series connection with a positive electrode line of an AC signal, and the other flexible ionic conductor layer is in series connection with a negative electrode line of the AC signal. The AC electroluminescence device prepared through method is good in stability, is good in tensile property, saves the energy, and is environment-friendly.

Description

Technical field: [0001] The invention relates to the field of electronic components, in particular to a preparation method of an AC electroluminescent device. Background technique: [0002] Electroluminescence device (ELD) refers to the electroluminescence or "cold emission" produced by the exposure of luminescent materials to the action of an electric field. This phenomenon was first detected by Henry Round in 1907 when he experimented with passing an electric current through a silicon carbide detector. In 1936, George Gestriau of the Marie Curie laboratory in Paris described this phenomenon for the first time with the word "electroluminescence", and reported that under the condition of an electric field, an AC-driven electroluminescence was generated between layers of ZnS powder process. At that time, he thought that this phenomenon would have great development potential as a simple light source, but the initial development of this field was very slow due to the low ligh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B33/22
CPCH05B33/22
Inventor 李风浪李舒歆
Owner 湖州奇奇机电科技有限公司
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