JPS6310491A - El display device - Google Patents
El display deviceInfo
- Publication number
- JPS6310491A JPS6310491A JP61153350A JP15335086A JPS6310491A JP S6310491 A JPS6310491 A JP S6310491A JP 61153350 A JP61153350 A JP 61153350A JP 15335086 A JP15335086 A JP 15335086A JP S6310491 A JPS6310491 A JP S6310491A
- Authority
- JP
- Japan
- Prior art keywords
- protective film
- light
- display element
- back electrode
- film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000001681 protective effect Effects 0.000 claims description 22
- 239000011888 foil Substances 0.000 claims description 15
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 11
- 239000011347 resin Substances 0.000 claims description 10
- 229920005989 resin Polymers 0.000 claims description 10
- 229920000642 polymer Polymers 0.000 claims description 5
- 239000000463 material Substances 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- KXJGSNRAQWDDJT-UHFFFAOYSA-N 1-acetyl-5-bromo-2h-indol-3-one Chemical compound BrC1=CC=C2N(C(=O)C)CC(=O)C2=C1 KXJGSNRAQWDDJT-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 239000004809 Teflon Substances 0.000 description 3
- 229920006362 Teflon® Polymers 0.000 description 3
- 239000003989 dielectric material Substances 0.000 description 3
- 229910052984 zinc sulfide Inorganic materials 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 239000005083 Zinc sulfide Substances 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910003437 indium oxide Inorganic materials 0.000 description 2
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 2
- 229920006284 nylon film Polymers 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 description 1
- 229910002113 barium titanate Inorganic materials 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、ＥＬ表示素子に関するもので、特に保護フ
ィルムに関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an EL display element, and particularly to a protective film.
例えば有機分散型ＥＬ表示素子は、特公昭３６−８４７
９号公報や同４０−８５７５号公報に開示されているよ
うに、アルミ箔等の光反射性を有する導電性金属物質か
ら成る背面電極、シアノエチルセルローズ等の高誘電率
誘電体物質から成る有機バインダにチタン酸バリウム粉
末等の高誘電率誘電体物質を混合させた絶縁層、シアノ
エチルセルローズ等の高誘電率誘電体物質から成る有機
バインダに硫化亜鉛粉末等の螢光体粉末を分散させた発
光層、ナイロンフィルム等の透明樹脂フィルム上に酸化
インジウム等の透明導電物質を塗着して成る透明電極を
積層形成して発光部とし、この発光部をテフロン等の可
視光線透過性を有し水蒸気透過率の低い（防水性の高い
）高分子フィルムから成る保護フィルムで熱圧着により
密封して構成されており、前記背面電極と透明電極間に
交流電圧を印加すると、発光層の螢光体粉末が交流電界
で励起されて発光を行う。For example, the organic dispersion type EL display element is
As disclosed in Publication No. 9 and Publication No. 40-8575, a back electrode made of a conductive metal material having light reflective properties such as aluminum foil, and an organic binder made of a dielectric material with a high dielectric constant such as cyanoethyl cellulose. an insulating layer made by mixing a dielectric material with a high dielectric constant such as barium titanate powder, and a light emitting layer made by dispersing a phosphor powder such as zinc sulfide powder in an organic binder made of a dielectric material with a high dielectric constant such as cyanoethyl cellulose. A transparent electrode made by coating a transparent conductive material such as indium oxide on a transparent resin film such as a nylon film is laminated to form a light emitting part, and this light emitting part is made of a material such as Teflon that is transparent to visible light and permeable to water vapor. The phosphor powder in the light-emitting layer is sealed by thermocompression bonding with a protective film made of a polymer film with low water resistance (high waterproofness). It emits light when excited by an alternating electric field.
このようなＥＬ表示素子では、発光部に水分が浸入する
と発光性能が著しく低下するため、保護フィルムにはｉ
ｌｌ子フィルムを用いることが多いが、コスト高となり
、また、防水性の点においても必ずしも充分とはいえな
かった。In such EL display elements, if moisture enters the light-emitting part, the light-emitting performance will be significantly reduced, so the protective film is
Although a 1/2-layer film is often used, the cost is high and the waterproofness is not necessarily sufficient.
このため、ＥＬ表示素子は、高価でありながら長時間安
定した発光を行えないのが現状であった。For this reason, the current situation is that EL display elements are expensive and cannot emit stable light for a long period of time.
〔問題点を解決するための手段］
この発明は、ＥＬ表示素子の需要増加に伴う安価で長時
間安定した発光を行えるものの要望に着目してなされた
もので、この要望に応じるこの発明の技術的手段は、背
面電極と透明電極との間に発光層が設けられた発光部を
保護フィルムで熱圧着により密封してなるＥＬ表示素子
において、少なくとも前記背面電極と対向する前記保護
フィルムを金匝箔と絶縁樹脂フィルムとの重合物とした
ことである。[Means for Solving the Problems] This invention was made with an eye to the need for something that can emit light stably for a long time at low cost due to the increasing demand for EL display elements, and the technology of the present invention meets this need. In an EL display element in which a light-emitting part in which a light-emitting layer is provided between a back electrode and a transparent electrode is sealed by thermocompression bonding with a protective film, at least the protective film facing the back electrode is sealed with a metal pouch. The material is a polymer of foil and insulating resin film.
前記技術的手段によると、少なくとも背面電極と対向す
る保護フィルムを金属箔と絶縁樹脂フィルムとの重合物
としたことにより、金属箔にて確実な防水性を確保する
ことができることから、発光部の密封を熱圧着にて行う
ために用いられる絶縁樹脂フィルムには防水性の低い廉
価なものを使用でき、保護フィルム全体としても安価と
なる。According to the above-mentioned technical means, by making at least the protective film facing the back electrode a polymer of metal foil and insulating resin film, reliable waterproofness can be ensured with the metal foil. An inexpensive insulating resin film with low waterproofness can be used for sealing by thermocompression bonding, and the protective film as a whole is also inexpensive.
この発明を第１図に示した一実施例に基づき説明すると
、■はアルミ箔がら成る背面電極、２はシアノエチルセ
ルロ−ズ
台させ背面電極１上にスクリーン印刷した後乾燥して成
る絶縁層、３はシアノエチルセルローズに化学式ＺｎＳ
：Ｃｕで表される硫化亜鉛粉末を分散させ絶縁層２上に
スクリーン印刷した後乾燥して成る発光層、４はナイロ
ンフィルム上に酸化インジウムを塗着して成り発光層３
上に配置された透明電極で、以上を積層形成して発光部
５とし、この発光部５をテフロンフィルムから成る（Ｍ
護−ｙイルムロとこの発明の特徴とする保護フィルム７
で挟みその周縁を熱圧着することにより密封して分散型
ＥＬ表示素子８が形成される。This invention will be explained based on an embodiment shown in FIG. 1. 2 is a back electrode made of aluminum foil, 2 is an insulating layer made of cyanoethyl cellulose, screen printed on the back electrode 1 and then dried; 3 is cyanoethyl cellulose with the chemical formula ZnS
: Luminescent layer 4 is made by dispersing zinc sulfide powder represented by Cu, screen printing it on the insulating layer 2, and drying it; 4 is a luminescent layer 3 made by coating indium oxide on a nylon film.
The above is laminated to form a light emitting part 5 with a transparent electrode placed on top, and this light emitting part 5 is made of a Teflon film (M
Protective film 7 characterized by Mamoru Ilmuro and this invention
The dispersion type EL display element 8 is formed by sandwiching the EL display element 8 and sealing it by thermocompression bonding the periphery thereof.
前記背面電極ｌと対向する保護フィルム７は、金属箔と
してアルミ箔７八を絶縁樹脂フィルムとしてポリエステ
ルフィルム７Ｂに貼り合わせた重合物から成っている。The protective film 7 facing the back electrode 1 is made of a polymer made by laminating aluminum foil 78 as a metal foil to a polyester film 7B as an insulating resin film.
かかるＥＬ表示素子８は、保護フィルム７を構成してい
るアルミ箔７Ａが確実に防水性を確保することから、保
護フィルム７をテフロンフィルムとした従来品に対して
、初輝度を同一とし発光させて輝度低下を調べた寿命（
輝度半減期）試験結果である第２図のグラフで示すよう
に寿命が延びた。Since the aluminum foil 7A constituting the protective film 7 ensures waterproofness, this EL display element 8 has the same initial brightness and emits light as compared to conventional products in which the protective film 7 is a Teflon film. lifespan (
As shown in the graph in Figure 2, which is the test result (luminance half-life), the lifespan was extended.
なお、第２図において、実線は本発明品、破線は従来品
のグラフである。In addition, in FIG. 2, the solid line is the graph of the product of the present invention, and the broken line is the graph of the conventional product.
また、周縁を熱圧着することにより保護フィルム６とと
もに発光部５を密封する保護フィルム７の絶縁樹脂フィ
ルム７Ｂは、熱圧着することで保護フィルム６と接合し
得るものであれば良く、防水性の低い廉価なものを使用
できるので、金属箔７Ａを付加しても保護フィルム７全
体として従来品よりも安価となる。Further, the insulating resin film 7B of the protective film 7 that seals the light emitting part 5 together with the protective film 6 by thermocompression bonding the periphery may be any material as long as it can be bonded to the protective film 6 by thermocompression bonding. Since a low-cost material can be used, even if the metal foil 7A is added, the protective film 7 as a whole becomes cheaper than the conventional product.
なお、背面電極１と保護フィルム７の金属箔７Ａとは、
その間に熱圧着促進用の接着剤（図示しない）を介在さ
せることにより、電気的絶縁が保たれている。Note that the back electrode 1 and the metal foil 7A of the protective film 7 are
Electrical insulation is maintained by interposing an adhesive (not shown) for promoting thermocompression bonding between them.
また、この発明は、前記実施例に限定されるものではな
く適宜変更可能であって、例えば、薄模型ＥＬ表示素子
にも適用することができる。Further, the present invention is not limited to the above embodiments, but can be modified as appropriate, and can be applied to, for example, a thin model EL display element.
この発明は、背面電極と透明電極との間に発光層が設け
られた発光部を保護フィルムで熱圧着により密封してな
るＥＬ表示素子において、少なくとも前記背面電極と対
向する前記保護フィルムを金属箔と絶縁樹脂フィルムと
の重合物としたことにより、金属箔にて確実な防水性を
確保することができることから、発光部の密封を熱圧着
にて行うために用いられる絶縁樹脂フィルムには、防水
性の低い廉価なものを使用でき、保護フィルム全体とし
ても安価となる。This invention provides an EL display element in which a light-emitting part in which a light-emitting layer is provided between a back electrode and a transparent electrode is sealed with a protective film by thermocompression bonding, in which at least the protective film facing the back electrode is covered with a metal foil. By making it a polymer of metal foil and insulating resin film, it is possible to ensure reliable waterproofness with metal foil. Therefore, the insulating resin film used to seal the light emitting part by thermocompression bonding is An inexpensive material with low properties can be used, and the protective film as a whole becomes inexpensive.
したがって、安価で長時間安定した発光を行得るＥＬ表
示素子を実現できるものである。Therefore, it is possible to realize an EL display element that is inexpensive and can emit stable light for a long time.
第１図はこの発明の一実施例の要部断面図、第２図は本
発明品と従来品の実験結果を示す特性図である。
１・・・背面電極 ３・・・発光層４・・・透明電
極 ５・・・発光部６、７・・・保護フィルム ７
Ａ・・・金属箔７Ｂ・・・絶縁樹脂フィルム
８・・・ＥＬ表示素子
第 １ ロ
第２図
時 間 （１（）FIG. 1 is a sectional view of a main part of an embodiment of the present invention, and FIG. 2 is a characteristic diagram showing experimental results of a product of the present invention and a conventional product. 1... Back electrode 3... Light emitting layer 4... Transparent electrode 5... Light emitting part 6, 7... Protective film 7
A...Metal foil 7B...Insulating resin film 8...EL display element No. 1 B Figure 2 Time (1()
Claims (1)
部を保護フィルムで熱圧着により密封してなるＥＬ表示
素子において、少なくとも前記背面電極と対向する前記
保護フィルムを金属箔と絶縁樹脂フィルムとの重合物と
したことを特徴とするＥＬ表示素子。In an EL display element in which a light-emitting part in which a light-emitting layer is provided between a back electrode and a transparent electrode is sealed by thermocompression bonding with a protective film, at least the protective film facing the back electrode is formed of a metal foil and an insulating resin film. An EL display element characterized by being made of a polymer with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61153350A JPS6310491A (en) | 1986-06-30 | 1986-06-30 | El display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61153350A JPS6310491A (en) | 1986-06-30 | 1986-06-30 | El display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6310491A true JPS6310491A (en) | 1988-01-18 |
Family
ID=15560547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61153350A Pending JPS6310491A (en) | 1986-06-30 | 1986-06-30 | El display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6310491A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6041437A (en) * | 1983-08-15 | 1985-03-05 | Seizo Hirano | Preparation of dried apple chip and utilization for preparation of cake |
| JPS60151991A (en) * | 1984-01-19 | 1985-08-10 | 日東電工株式会社 | Electroluminescent element |
-
1986
- 1986-06-30 JP JP61153350A patent/JPS6310491A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6041437A (en) * | 1983-08-15 | 1985-03-05 | Seizo Hirano | Preparation of dried apple chip and utilization for preparation of cake |
| JPS60151991A (en) * | 1984-01-19 | 1985-08-10 | 日東電工株式会社 | Electroluminescent element |
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