Unlock instant, AI-driven research and patent intelligence for your innovation.

EL sheet and manufacturing method thereof

An electroluminescent sheet and electroluminescent technology, which are applied in the directions of electroluminescent light sources, electric light sources, light sources, etc., can solve the problems of poor composite properties and high requirements of electroluminescent sheets, and achieve good bending resistance and tensile properties. Improves the effect of direct compounding

Inactive Publication Date: 2011-07-06
海宁市盐官工业投资有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a kind of electroluminescent sheet with good composite property and low requirements for the film as the substrate layer in order to overcome the disadvantages of the prior art that the electroluminescent sheet is poor in composability and has high requirements for the film as the substrate layer. Luminescent sheet and its production method

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • EL sheet and manufacturing method thereof
  • EL sheet and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] This embodiment is used to illustrate the electroluminescent sheet provided by the present invention and its manufacturing method.

[0037] First use the electrostatic dust removal roller to dedust the surface of the flexible circuit board (FPC).

[0038] Silver paste (ED427SS type produced by American Acheson Company) was screen-printed on the FPC circuit board, and dried at 80° C. for 60 minutes to form silver wires as back electrode bus bars.

[0039] On the FPC circuit board and the back electrode bus bar, the carbon paste (ED423SS type produced by Acheson Company, USA) was screen-printed, and dried at 80° C. for 60 minutes to form the back electrode layer. The thickness of the back electrode layer is 15 microns.

[0040] Mix barium titanate powder (average particle diameter is 0.6 micron) and polyvinylidene fluoride binder in a weight ratio of 1.5:1, and then add 15% by weight of dimethyl formaldehyde based on the total weight of the medium powder and binder. Ami...

Embodiment 2

[0047] The electroluminescent sheet was prepared according to the method of Example 1, the difference being that the conductive layer was prepared as follows:

[0048] Polyaniline (PANI) and dimethylformamide are mixed according to a weight ratio of 1:20 to make a conductive layer slurry. The conductive layer paste was screen-printed on the light-emitting layer, and dried at 80° C. for 20 minutes to form a conductive layer. The thickness of the conductive layer is 10 microns. The light transmittance of the conductive layer is 80%.

Embodiment 3

[0050] This embodiment is used to illustrate the electroluminescent sheet provided by the present invention and its manufacturing method.

[0051] First use an electrostatic dust removal roller to remove dust from the surface of a thermoplastic polyurethane film (FS series produced by Dingji, with a thickness of 20 microns).

[0052] Then, silver paste was screen-printed on the thermoplastic polyurethane film, and dried at 80° C. for 60 minutes to form silver wires as back electrode bus bars.

[0053] Then, a carbon paste (ED423SS type produced by Acheson, USA) was screen-printed on the thermoplastic polyurethane film and the back electrode bus bar, and dried at 80° C. for 60 minutes to form a back electrode layer. The thickness of the back electrode layer is 10 microns.

[0054] Mix barium titanate powder (the average particle diameter is 0.8 micron) and polyvinylidene fluoride binder in a weight ratio of 2:1, and then add 20% by weight of dimethyl formaldehyde based on the ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides an electroluminescent sheet and a manufacture method thereof. The electroluminescent sheet comprises a back electrode layer (2), a dielectric layer (3) and a luminescent layer (4) which are arranged in turn, wherein the electroluminescent sheet also comprises a substrate layer (1) positioned on the back electrode layer (2), as well as a conducting layer (5) and an insulating layer (6) which are arranged on the luminescent layer (4) in turn, wherein the light transmittance of both the conducting layer (5) and the insulating layer (6) is 50 percent at least; and the substrate layer (1) and the dielectric layer (3) are positioned on two opposite surfaces of the back electrode layer (2) respectively. The electroluminescent sheet is good in direct compound property with other elements. In addition, when the thin film with small thickness and good flexibility is selected as the substrate layer, the electroluminescent sheet with good flexibility can be obtained, so that the electroluminescent sheet has the advantages of good bending resistance and tensile properties.

Description

technical field [0001] The invention relates to an electroluminescent sheet (abbreviated as EL) and a manufacturing method thereof. Background technique [0002] With the development of science and technology, electroluminescent technology has been widely used in the field of civilian consumption. It is used as a luminous body in cold light advertisements, luminous shoes and hats, safety signs and other products, as a backlight source in instrument panels, LCD screens, mobile phone buttons and other products, and as a composite light-emitting element in luminous control panels and other products. Because the electroluminescent sheet has the characteristics of small size, light weight, basically no heat generation, low power consumption, no flicker, uniform light emission, and large light emitting area, it has a very broad market application prospect. [0003] The electroluminescent sheet essentially uses the principle of a capacitor, which usually includes a front electrode...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H05B33/12H05B33/14H05B33/22H05B33/26
Inventor 赖金洪
Owner 海宁市盐官工业投资有限公司