CN2275673Y

CN2275673Y - Bendable electroluminescence area source

Info

Publication number: CN2275673Y
Application number: CN 95217839
Authority: CN
Inventors: 李维諟
Original assignee: GUCHAOBAI INDUSTRY Co BEIJING CITY
Current assignee: GUCHAOBAI INDUSTRY Co BEIJING CITY
Priority date: 1995-08-01
Filing date: 1995-08-01
Publication date: 1998-03-04
Anticipated expiration: 2005-08-01

Abstract

The utility model relates to a bendable electroluminescent area source. The utility model is characterized in that an upper baseplate is a plastic film 1 with an indium oxide (ITO) transparent conducting film; a lower baseplate is a metal foil 10 with an insulating layer; the outer side of the lower baseplate is a hot-pressing back seal plastic film 9; an electroluminescent powder layer is an electroluminescent power layer 3 mixed with a thickness liner 4; the electroluminescent powder layer is coated between the upper and the lower baseplates; one electrode outer leading-out wire 7 is adhesively connected to the upper baseplate by conductive adhesive, and another electrode outer leading-out wire is adhesively connected to the lower baseplate by the conductive adhesive; the periphery of the upper and the lower baseplates is sealed by sealing glue 6.

Description

Bendable electroluminescent area source

The utility model relates to a kind of bendable electroluminescent area source, and particularly a kind of adaptation and batch process by the electroluminescent area source of plastics, metal deflection.

Existing electroluminescent area source, mostly be by two sheet glass sheets and be clipped in nesa coating and the back electrode film of vacuum evaporation between the electroluminescent bisque constitute.For example, Chinese patent 87201951 disclosed powder electroluminescence devices are exactly wherein a kind of.This device is a rigid structure, and thickness is greater than 1 millimeter, and back electrode is to make with the process of vacuum evaporation metal film, and luminous bisque is made by spraying or typography, guarantees the bisque uniformity by technology.This structure and technology need expensive high vacuum evaporation equipment, skilled technology skill, and vacuum evaporation is batch-type production, and efficient is not high, and cost is but very high, the product that this method is made, and thickness is big, can not be crooked, product is vibration resistance not.Thereby, limited its scope of application greatly.

The purpose of this utility model is to propose a kind of bendable electroluminescent area source, and this light source flexibility is strong, the more even unanimity of brightness, and thickness is no more than 0.7 millimeter, with fairly simple equipment and method, just can production in enormous quantities, high efficiency.

The purpose of this utility model is achieved in that a kind of bendable electroluminescent area source, the upper substrate of this light source is the overlay that has indium oxide (ITO) nesa coating, infrabasal plate is the metal forming that has insulating barrier, infrabasal plate outside hot pressing back of the body envelope plastic foil, described electroluminescent bisque is the electroluminescent bisque that is mixed with the thickness liner, this electroluminescent bisque is coated between two substrates, the outer lead-out wire of electrode by conductive adhesive to upper substrate, to infrabasal plate, the two substrates periphery is sealed by sealing-in glue the outer lead-out wire of another electrode by conductive adhesive.Thickness liner of the present utility model can be made up of equally distributed glass microballoon.After lead-out wire outside the electrode was applied with enough alternating electric fields, the electroluminescent bisque between two substrates was excited by alternating electric field and is luminous.

The utility model has following advantage:

1, owing to used plastics and metal platinum to make substrate, not only make device can do very thinly, and can deflection, and be easy to make different shape, have very superior anti-vibration performance.

2, be scattered with the thickness liner of special facture at luminous bisque, can guarantee that the light emitting layer thickness between two flexible base plates keeps highly even, accurate in process, and be easy to control, adjust, thereby guarantee when work, to be applied to the unusual uniformity of electric field on the luminous bisque.

3, the insulating barrier on the metal platinum can guarantee that device has reliable proof voltage breakdown characteristics.

4, because design has interior electrode outlet line end, process and assemble outer lead at last.Thereby help integrated continuous processing.

5, be applicable to large tracts of land, make planar light source, luminous sign or information under the low light conditions and show.

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1, schematic cross section of the present utility model

Fig. 2, outer lead parts figure of the present utility model

Referring to accompanying drawing, during processing the utility model, at first the indium oxide on the overlay 1 (ITO) nesa coating 2 is photo-etched into required form, and excision forming, then the thickness liner is evenly mixed the electroluminescent powder batching, this electroluminescent powder is a zinc sulfide phosphor, and the thickness liner of present embodiment is made up of the glass microballoon 4 that is evenly distributed in the electroluminescent powder.This microballon has special transmitance and scattered power, this bead diameter is identical with the design thickness of luminous bisque, and require the bead diameter uniformity, the margin of tolerance is less than the thickness deviation scope of luminous bisque, then this electroluminescent powder is coated on the ITO nesa coating of overlay, form electroluminescent bisque 3, its thickness is no more than 0.7 millimeter.Apply an insulating barrier 11 with metal forming 10 this moment again, be hot-pressed onto on the back of the body envelope plastic foil 9, and excision forming.And in periphery printing sealing-in glue 6, snap together with the overlay that coats the electroluminescent bisque again, be put into then in the special-purpose vacuum hotpressing equipment and go, go bubble, hot pressing, involution becomes an integral body, then, on two substrates, print conducting resinl 5, again with electrode outer lead 7, with 8 hot pressing of outer lead involution sheet together, constitute the outer lead parts, referring to accompanying drawing 2, these outer lead parts are hot-pressed on conducting resinl 5 and the back of the body envelope plastic foil 9, so far, have finished whole manufacturing process of the present utility model.In manufacture craft, the electroluminescent area source of several independent can also be processed simultaneously on a substrate, after finishing whole or most of operations, be divided into independent one by one electroluminescent area source again.

Claims

1, a kind of bendable electroluminescent area source, substrate is arranged, electrode and electroluminescent bisque, it is characterized in that, described upper substrate is the overlay (1) that has indium oxide (ITO) nesa coating, infrabasal plate is the metal forming (10) that has insulating barrier, infrabasal plate outside hot pressing back of the body envelope plastic foil (9), described electroluminescent bisque is the electroluminescent bisque (3) that is mixed with thickness liner (4), this electroluminescent bisque is coated between two substrates, the outer lead-out wire (7) of electrode bonds to upper substrate by conducting resinl (5), to infrabasal plate, the two substrates periphery is sealed by sealing-in glue (6) the outer lead-out wire of another electrode by conductive adhesive.

2, bendable electroluminescent area source according to claim 1 is characterized in that, described thickness liner is made up of equally distributed glass microballoon.