EL sheet and component for lighting type push-button switch

A thin sheet and luminous body technology, applied in the direction of electric switches, light sources, electric light sources, etc., can solve the problems of insulation degradation, luminance reduction, and non-lighting, etc., and achieve the reduction of electrostatic capacity, suppression of insulation degradation, and firm combination Effect

Inactive Publication Date: 2007-01-31
SHIN-ETSU POLYMER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] In addition, in the EL sheet used in conventional push button switch components, as the driving time, that is, the luminescence time of the EL sheet, ions are generated in the metal filler of the counter electrode layer and impurities mainly composed of bromine and chlorine in the transparent electrode layer. As a result, the insulation between the transparent electrode layer and the back electrode layer is degraded, resulting in a decrease in luminance, a partial short circuit, and thus the occurrence of black spots, which in turn cause no light. abnormal situation

Method used

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  • EL sheet and component for lighting type push-button switch
  • EL sheet and component for lighting type push-button switch
  • EL sheet and component for lighting type push-button switch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0106] According to the above-mentioned embodiment, the EL sheet 2 and the member 1 for an illuminated push button switch are formed as follows.

[0107] A polycarbonate-based resin alloy film バイホル (trade name, manufactured by バイエル Corporation) with a thickness of 125 μm is prepared, and it is used as a transparent insulating film 10 on the outermost peripheral surface, and it is applied and colored by screen printing as a decorative layer. ink.

[0108] On the film coated with the colored ink, polyester-based ink IPS-000 (trade name, manufactured by Teikoku Ink Co., Ltd.) was applied by screen printing as a light-transmitting adhesive layer 12, and then a conductive layer 12 was formed by screen printing. A transparent polymer Orgacon P3040 (trade name, manufactured by Agfa Corporation) was used as the transparent electrode layer 11 .

[0109] On the film on which the transparent electrode layer 11 was printed, polyester-based ink IPS-000 (trade name, manufactured by Teikoku...

Embodiment 2

[0117] According to the above-mentioned embodiment, the EL sheet 2 and the member 1 for an illuminated push button switch are formed as follows.

[0118] A 125 μm-thick polycarbonate-based resin alloy film バイホル (trade name, manufactured by バイエル Corporation) was prepared as the transparent insulating film 10 on the outermost peripheral surface, and colored ink was applied thereto by screen printing.

[0119] On the film coated with the colored ink, a conductive polymer Orgacon P3040 (trade name, manufactured by Agfa Corporation) was applied as the transparent electrode layer 11 by screen printing.

[0120] On the thin film printed with the transparent electrode layer 11, the luminescent layer 13 is formed by a wet method at the position where light is required. As the binder, a polyester-based EG-000 Mejumu (trade name, manufactured by Teikoku Ink Co., Ltd.) was used, and EL phosphor GGSS22 (manufactured by Osram Silbania Co., Ltd.) was mixed in the binder at a weight ratio of ...

Embodiment 3

[0127] Barium titanate was dispersed in the fluorine-based resin, and 5% by mass of amphoteric ion-type ion-exchange resin IXE-633 (antimony-bismuth system, trade name, Toagosei Co., Ltd.) was added thereto, and the coating thus obtained was passed through Coating is performed by screen printing as the dielectric layer 14 . Other conditions are identical with embodiment 1.

[0128] Thereby, the member 1 for light-emitting pushbutton switches with high moisture resistance can be obtained.

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Abstract

It is to provide an EL sheet and a member for lighting a push-button switch capable of emitting light stably and sufficiently for a long period of time without problems such as non-light emission phenomena and generation of black dot, even if the EL element is subjected to, for example, a drawing process to form into a three-dimensional shape. A laminated EL sheet is formed that comprises a counter electrode layer 15, a dielectric layer 14, a light-emitting layer 13, and a transparent electrode layer 11. An adhesive layer 12 made of adhesive having excellent adhesiveness to the electroconductive polymer is disposed between the transparent electrode layer 11 made of an electroconductive polymer and the light-emitting layer 13. In order that the adhesives have excellent adhesiveness, polyester, acrylic, cyanoacrylate, polyolefin, ethylene-vinyl acetate or ethylene ethyl acrylate type adhesive is used. The dielectric layer is made of fluoro type, polyester type or acrylic type resin binder. Furthermore, to improve durability in a hot and high-humidity environment, a second counter electrode layer 17 and / or a second dielectric layer 17, both having an ion diffusion-preventing function is / are disposed.

Description

technical field [0001] The present invention relates to a member for an illuminated push button switch or an EL sheet used for a member for an illuminated push button switch of a small electric and electronic device, wherein the small electric and electronic device is mounted on a mobile communication device such as a mobile phone, a PDA, and a CD player or an MD player , a compact tape recorder, or in a car. Background technique [0002] Conventionally, illuminated push button switches have been used in input devices such as mobile communication devices. Among the illuminated pushbutton switch members used in the pushbutton switches of such input devices, a so-called light-emitting function for illuminating the function display portion of the pushbutton switch during use at night is widely used. [0003] figure 2 An example of a conventional illuminated push button switch is shown. For example, as figure 2 As shown, in the state where the cover base material 32 and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B33/22H05B33/26H01H13/02H01H9/18H01H13/14
Inventor 堀田真司山田俊一
Owner SHIN-ETSU POLYMER CO LTD
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