JPH11219791A - Dispersion type electroluminescence element, its manufacture and illuminating unit using it - Google Patents
Dispersion type electroluminescence element, its manufacture and illuminating unit using itInfo
- Publication number
- JPH11219791A JPH11219791A JP10021790A JP2179098A JPH11219791A JP H11219791 A JPH11219791 A JP H11219791A JP 10021790 A JP10021790 A JP 10021790A JP 2179098 A JP2179098 A JP 2179098A JP H11219791 A JPH11219791 A JP H11219791A
- Authority
- JP
- Japan
- Prior art keywords
- electrode layer
- light
- insulating film
- layer
- transmitting
- 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.)
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- Electroluminescent Light Sources (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、各種電子機器の表
示部にバックライト等として使用される分散型エレクト
ロルミネッセンス素子（以下、ＥＬ素子と記載する）と
その製造方法及びこれを用いた照光ユニットに関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dispersion-type electroluminescent element (hereinafter, referred to as an EL element) used as a backlight or the like in a display section of various electronic devices, a method of manufacturing the same, and an illuminating unit using the same. It is about.
【０００２】[0002]
【従来の技術】近年、各種電子機器の多様化が進むにつ
れて、暗闇でも表示部の識別や操作が可能なように表示
パネルやＬＣＤの後方に照光用のバックライトを備えた
ものが増え、そのバックライト用としてＥＬ素子が多く
使用されるようになってきた。2. Description of the Related Art In recent years, with the diversification of various electronic devices, those equipped with a backlight for illumination behind a display panel or an LCD so as to be able to identify and operate a display unit even in darkness have increased. EL elements are increasingly used for backlights.
【０００３】このような従来のＥＬ素子及びこれを用い
た照光ユニットについて、図６及び図７を用いて説明す
る。[0003] Such a conventional EL element and an illuminating unit using the same will be described with reference to FIGS. 6 and 7.
【０００４】図６は従来のＥＬ素子の断面図、図７はこ
のＥＬ素子を用いた照光ユニットの断面図であり、同図
において、１はポリエチレンテレフタレート等の可撓性
を有する透明な絶縁フィルムで、この下面全面に酸化イ
ンジウム錫（以下、ＩＴＯと記載する）をスパッタまた
は蒸着した光透過性電極層２が形成され、さらにこの下
面に、フッ素ゴムやシアノ系樹脂等の高誘電性樹脂に発
光の母材となる硫化亜鉛を分散させた発光体層３や、同
じく高誘電性樹脂にチタン酸バリウム等を分散させた誘
電体層４、誘電体層４に接続された銀やカーボンレジン
系の背面電極層５、エポキシ樹脂やポリエステル樹脂等
の絶縁層６が順次重ねて印刷形成されて、ＥＬ素子７が
構成されている。FIG. 6 is a cross-sectional view of a conventional EL element, and FIG. 7 is a cross-sectional view of an illuminating unit using the EL element. In the figure, reference numeral 1 denotes a transparent transparent insulating film such as polyethylene terephthalate. Then, a light-transmitting electrode layer 2 formed by sputtering or depositing indium tin oxide (hereinafter referred to as ITO) is formed on the entire lower surface, and a high dielectric resin such as fluoro rubber or cyano resin is formed on the lower surface. A light emitting layer 3 in which zinc sulfide as a base material for light emission is dispersed, a dielectric layer 4 in which barium titanate or the like is dispersed in a high dielectric resin, and a silver or carbon resin material connected to the dielectric layer 4 The back electrode layer 5 and the insulating layer 6 such as an epoxy resin or a polyester resin are sequentially formed by printing to form an EL element 7.
【０００５】そして、８はＥＬ素子７の上方に配置され
た光透過性の弾性ゴム等からなる操作体、９は弾性金属
薄板製のドーム状可動接点、１０は上面に固定接点１１
Ａ，１１Ｂや配線パターン１２が形成された配線基板
で、配線基板１０の固定接点１１Ｂ上にはドーム状可動
接点９が載置されてスイッチ回路１３が構成され、これ
らをケース１４が覆って照光ユニット１５が構成されて
いる。[0005] Reference numeral 8 denotes an operating body made of a light-transmitting elastic rubber or the like disposed above the EL element 7; 9, a dome-shaped movable contact made of an elastic metal thin plate;
A, a dome-shaped movable contact 9 is mounted on the fixed contact 11B of the wiring board 10 to form a switch circuit 13, and the case 14 covers the fixed contact 11B of the wiring board on which the A, 11B and the wiring pattern 12 are formed. A unit 15 is configured.
【０００６】以上のような構成において、電子機器の回
路（図示せず）からＥＬ素子７の光透過性電極層２と背
面電極層５の間に電圧を印加すると、ＥＬ素子７が駆動
して発光し、この光がケース１４の複数の孔から突出し
た操作体８上面の操作部８Ａを下面から照光するため、
周囲が暗い場合でも操作部８Ａの位置や表示を明確に確
認できるものである。In the above configuration, when a voltage is applied between the light transmitting electrode layer 2 and the back electrode layer 5 of the EL element 7 from a circuit (not shown) of the electronic device, the EL element 7 is driven. It emits light, and this light illuminates the operation unit 8A on the upper surface of the operation body 8 protruding from the plurality of holes of the case 14 from the lower surface.
Even when the surroundings are dark, the position and display of the operation unit 8A can be clearly confirmed.
【０００７】また、操作体８の操作部８Ａを下方へ押圧
操作すると、下面の突起部８ＢがＥＬ素子７を撓ませ、
これを介してドーム状可動接点９の中央頂点部が押圧さ
れ、ドーム状可動接点９が反転して配線基板１０の固定
接点１１Ａに接触することによって、スイッチ回路１３
の固定接点１１Ａと１１Ｂの電気的接離が行われるよう
に構成されている。When the operating portion 8A of the operating body 8 is pressed downward, the projection 8B on the lower surface bends the EL element 7,
Through this, the central apex of the dome-shaped movable contact 9 is pressed, and the dome-shaped movable contact 9 is turned over and comes into contact with the fixed contact 11A of the wiring board 10, whereby the switch circuit 13 is turned on.
The fixed contacts 11A and 11B are electrically connected to and separated from each other.
【０００８】なお、図６では、実際には絶縁フィルム１
よりもはるかに厚さの薄い光透過性電極層２や発光体層
３等を、見易くするために拡大して記載している。In FIG. 6, the insulating film 1 is actually used.
The light-transmitting electrode layer 2 and the light-emitting layer 3 which are much thinner than those are shown in an enlarged manner for easy viewing.
【０００９】[0009]
【発明が解決しようとする課題】しかしながら上記従来
のＥＬ素子においては、絶縁フィルム１下面の発光体層
３や誘電体層４、背面電極層５等は、金属粉を分散した
樹脂によって形成されているため柔軟性を有している
が、光透過性電極層２はＩＴＯ金属粉をスパッタまたは
蒸着して形成されたものであり、硬質で曲げや折れによ
って破断しやすいため、絶縁フィルム１をあまり可撓性
のよいものとすることができず、厚さが７５ないし１２
５μｍといったある程度以上の剛性を有するものに限定
されるという課題があった。However, in the above-mentioned conventional EL device, the luminous layer 3, the dielectric layer 4, the back electrode layer 5 and the like on the lower surface of the insulating film 1 are formed of a resin in which metal powder is dispersed. However, the light-transmitting electrode layer 2 is formed by sputtering or depositing ITO metal powder, and is hard and easily broken by bending or bending. Cannot be flexible and has a thickness of 75 to 12
There was a problem that the rigidity was limited to a certain degree such as 5 μm.
【００１０】従って、このＥＬ素子を用いた照光ユニッ
トも、絶縁フィルム１が厚く光透過性電極層２が硬質で
あるＥＬ素子７を介して、スイッチ回路１３の電気的接
離を行っているため、操作体８の押圧操作力が大きなも
のとなったり、ドーム状可動接点９の反転による節度感
が損なわれてしまうという課題があった。Therefore, the illumination unit using this EL element also electrically connects and disconnects the switch circuit 13 via the EL element 7 in which the insulating film 1 is thick and the light transmitting electrode layer 2 is hard. However, there has been a problem that the pressing operation force of the operating body 8 becomes large, and a sense of moderation due to inversion of the dome-shaped movable contact 9 is impaired.
【００１１】本発明は、このような従来の課題を解決す
るものであり、可撓性に優れ、これを介してスイッチ回
路を操作しても良好な操作感触が得られるＥＬ素子と、
その製造方法及びこれを用いた照光ユニットを提供する
ことを目的とする。An object of the present invention is to solve such a conventional problem and to provide an EL element which is excellent in flexibility and can provide a good operation feeling even when a switch circuit is operated through the EL element.
It is an object of the present invention to provide a manufacturing method thereof and an illumination unit using the same.
【００１２】[0012]
【課題を解決するための手段】上記課題を解決するため
に本発明のＥＬ素子は、厚さが５〜５０μｍの光透過性
の絶縁フィルムの全面或いは所定の箇所に、導電粉を分
散した柔軟性を有する光透過性樹脂を印刷することによ
って光透過性電極層を形成してＥＬ素子を構成すると共
に、このＥＬ素子を用いて照光ユニットを構成するもの
である。In order to solve the above-mentioned problems, an EL device according to the present invention is a flexible device in which conductive powder is dispersed on the entire surface or a predetermined portion of a light-transmitting insulating film having a thickness of 5 to 50 μm. An EL element is formed by forming a light-transmitting electrode layer by printing a light-transmitting resin having properties, and an illuminating unit is formed using the EL element.
【００１３】これにより、可撓性に優れたＥＬ素子及び
良好な操作感触を有する照光ユニットを得ることができ
る。Thus, an EL element having excellent flexibility and an illuminating unit having a good operation feeling can be obtained.
【００１４】[0014]
【発明の実施の形態】本発明の請求項１に記載の発明
は、厚さが５〜５０μｍの光透過性の絶縁フィルムと、
この絶縁フィルム片面の全面或いは所定の箇所に、導電
粉を分散した柔軟性を有する光透過性樹脂を印刷して形
成された光透過性電極層と、光透過性電極層上に順次重
ねて印刷形成された発光体層及び誘電体層、背面電極層
からなるＥＬ素子としたものであり、絶縁フィルムの厚
さが薄く、また光透過性電極層が柔軟性を有しているた
め、剛性が低く可撓性に優れたＥＬ素子を得ることがで
きるという作用を有する。BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 of the present invention provides a light-transmitting insulating film having a thickness of 5 to 50 μm,
A light-transmitting electrode layer formed by printing a flexible light-transmitting resin in which conductive powder is dispersed on the entire surface of one surface of the insulating film or at a predetermined position, and printing is sequentially performed on the light-transmitting electrode layer. This is an EL device composed of the formed luminous layer, dielectric layer, and back electrode layer. The thickness of the insulating film is small, and the light-transmitting electrode layer has flexibility. This has the effect that an EL element having low flexibility and excellent flexibility can be obtained.
【００１５】請求項２に記載の発明は、請求項１記載の
発明において、絶縁フィルム片面の所定の箇所に、光透
過性電極層及び発光体層、誘電体層、背面電極層を重ね
て印刷形成すると共に、光透過性電極層及び背面電極層
に一端が接続した給電パターンや他の配線パターンを上
記各層以外の箇所に印刷形成したものであり、電子機器
内の電気的接続を行うことのできる配線機能を備えたＥ
Ｌ素子が得られるため、これらの給電パターンや配線パ
ターンをコネクタやＬＣＤに接続することによって、電
子機器内の接続に用いられる配線基板やケーブル等の構
成部品を簡略化することができるという作用を有する。According to a second aspect of the present invention, in the first aspect of the present invention, a light transmitting electrode layer, a light emitting layer, a dielectric layer, and a back electrode layer are superimposed and printed on a predetermined portion of one surface of the insulating film. A power supply pattern having one end connected to the light-transmissive electrode layer and the back electrode layer, and another wiring pattern formed by printing on a portion other than the above layers. E with wiring function
Since an L element is obtained, by connecting these power supply patterns and wiring patterns to connectors and LCDs, it is possible to simplify components such as wiring boards and cables used for connection in electronic devices. Have.
【００１６】請求項３に記載の発明は、絶縁フィルムよ
りも剛性が高い仮基材に貼付した絶縁フィルムに、光透
過性電極層及び発光体層、誘電体層、背面電極層や導電
パターンを印刷形成した後、仮基材から絶縁フィルムを
剥がしてＥＬ素子とする請求項１または２記載のＥＬ素
子の製造方法としたものであり、剛性の高い仮基材に絶
縁フィルムを貼付して各層の印刷を行うため、薄い絶縁
フィルムを用いても印刷時の破れや皺がなくなり確実な
印刷が行えると共に、取扱いも簡便なものとなり、可撓
性に優れたＥＬ素子を容易に製作することができるとい
う作用を有する。According to a third aspect of the present invention, a light-transmitting electrode layer, a light-emitting layer, a dielectric layer, a back electrode layer, and a conductive pattern are formed on an insulating film attached to a temporary substrate having higher rigidity than the insulating film. 3. The method for manufacturing an EL element according to claim 1, wherein the insulating film is peeled off from the temporary base material after printing to form an EL element. Since printing is performed without using a thin insulating film, the printing can be reliably performed without breakage or wrinkles at the time of printing, the handling can be simplified, and an EL element having excellent flexibility can be easily manufactured. Has the effect of being able to.
【００１７】請求項４に記載の発明は、請求項１または
２記載のＥＬ素子と、このＥＬ素子の絶縁フィルム側に
配置された操作体と、ＥＬ素子の背面電極層側に配置さ
れたスイッチ回路からなり、操作体下面がＥＬ素子を撓
ませ、これを介してスイッチ回路の電気的接離が行われ
る照光ユニットとしたものであり、可撓性に優れたＥＬ
素子を用いて照光ユニットが構成されるため、スイッチ
回路の操作感を損なうことのない良好な操作感触の照光
ユニットを得ることができるという作用を有する。According to a fourth aspect of the present invention, there is provided the EL element according to the first or second aspect, an operating body disposed on the insulating film side of the EL element, and a switch disposed on the back electrode layer side of the EL element. The illumination unit is composed of a circuit, the lower surface of the operation body bends the EL element, and the switch circuit is electrically connected / disconnected via the EL element.
Since the illuminating unit is configured using the elements, an illuminating unit having a good operation feeling without impairing the operation feeling of the switch circuit can be obtained.
【００１８】以下、本発明の実施の形態について、図１
〜図５を用いて説明する。なお、従来の技術の項で説明
した構成と同一構成の部分には同一符号を付して、詳細
な説明を省略する。FIG. 1 shows an embodiment of the present invention.
This will be described with reference to FIG. The same components as those described in the section of the related art are denoted by the same reference numerals, and detailed description will be omitted.
【００１９】（実施の形態１）図１は本発明の第１の実
施の形態によるＥＬ素子の断面図であり、同図におい
て、２１は厚さが５〜５０μｍのポリエチレンテレフタ
レートやポリイミド、ポリサルフォン、ポリカーボネー
ト等の可撓性を有する透明な絶縁フィルムで、この下面
にポリエステル樹脂やエポキシ樹脂、アクリル樹脂、フ
ェノキシ樹脂、フッ素ゴム等の柔軟性を有する光透過性
樹脂にＩＴＯを分散した導電ペーストを印刷して光透過
性電極層２２が形成されている。(Embodiment 1) FIG. 1 is a sectional view of an EL device according to a first embodiment of the present invention. In FIG. 1, reference numeral 21 denotes a polyethylene terephthalate, polyimide, polysulfone having a thickness of 5 to 50 μm, A flexible transparent insulating film such as polycarbonate, printed on its lower surface with a conductive paste in which ITO is dispersed in a flexible light-transmitting resin such as polyester resin, epoxy resin, acrylic resin, phenoxy resin, or fluororubber. Thus, a light-transmissive electrode layer 22 is formed.
【００２０】そして、この光透過性電極層２２の下面
に、フッ素ゴムやシアノ系樹脂等の高誘電性樹脂に発光
の母材となる硫化亜鉛を分散させた発光体層３や、同じ
く高誘電性樹脂にチタン酸バリウム等を分散させた誘電
体層４、誘電体層４に接続された銀やカーボンレジン系
の背面電極層５、エポキシ樹脂やポリエステル樹脂等の
絶縁層６が、順次重ねて印刷形成されてＥＬ素子２３が
構成されていることは従来の技術の場合と同様である。On the lower surface of the light transmitting electrode layer 22, a light emitting layer 3 in which zinc sulfide as a base material for light emission is dispersed in a high dielectric resin such as fluoro rubber or cyano resin, A dielectric layer 4 in which barium titanate or the like is dispersed in a conductive resin, a back electrode layer 5 of silver or carbon resin connected to the dielectric layer 4, and an insulating layer 6 of epoxy resin or polyester resin are sequentially stacked. The EL element 23 is formed by printing as in the case of the conventional technique.
【００２１】以上のように構成されるＥＬ素子の製造方
法について説明すると、図２（ａ）に示すように、先
ず、絶縁フィルム２１よりも厚く剛性が高い仮基材２４
の上面に塗布された微粘着性の接着剤２５によって、絶
縁フィルム２１を仮基材２４に貼付した後、図２（ｂ）
のように、絶縁フィルム２１に光透過性電極層２２及び
発光体層３、誘電体層４、背面電極層５、絶縁層６を順
次重ねて印刷形成し、最後に、図２（ｃ）に示すよう
に、仮基材２４から絶縁フィルム２１を剥がすことによ
ってＥＬ素子２３が完成する。The method of manufacturing the EL device having the above-described structure will be described. As shown in FIG. 2A, first, a temporary base material 24 thicker and more rigid than the insulating film 21 is formed.
After the insulating film 21 is adhered to the temporary base material 24 with the slightly adhesive adhesive 25 applied to the upper surface of FIG.
As shown in FIG. 2, a light-transmitting electrode layer 22, a light-emitting layer 3, a dielectric layer 4, a back electrode layer 5, and an insulating layer 6 are sequentially formed on the insulating film 21 by printing, and finally, as shown in FIG. As shown, the EL element 23 is completed by peeling the insulating film 21 from the temporary base material 24.
【００２２】なお、図１や図２では、実際には絶縁フィ
ルム２１よりもはるかに厚さの薄い光透過性電極層２２
や発光体層３等を、見易くするために拡大して記載して
いる。In FIGS. 1 and 2, the light-transmitting electrode layer 22 which is much thinner than the insulating film 21 is actually shown.
The light-emitting body layer 3 and the like are illustrated in an enlarged manner for easy viewing.
【００２３】以上のようなＥＬ素子２３を電子機器に装
着し、電子機器の回路（図示せず）からＥＬ素子２３の
光透過性電極層２２と背面電極層５の間に電圧を印加す
ると、ＥＬ素子２３が駆動して発光し、この光が電子機
器の表示パネルやＬＣＤ等を後方から照光するため、周
囲が暗い場合でも操作部や表示部の識別を明確に行うこ
とができる。When the EL element 23 as described above is mounted on an electronic device and a voltage is applied between the light transmitting electrode layer 22 and the back electrode layer 5 of the EL element 23 from a circuit (not shown) of the electronic device, The EL element 23 is driven to emit light, and this light illuminates the display panel, LCD, or the like of the electronic device from behind, so that the operation unit and the display unit can be clearly identified even when the surroundings are dark.
【００２４】このように本実施の形態によれば、絶縁フ
ィルム２１の厚さが薄く、また光透過性電極層２２が柔
軟性を有しているため、剛性が低く可撓性に優れたＥＬ
素子を得ることができるものである。As described above, according to the present embodiment, since the thickness of the insulating film 21 is small and the light-transmitting electrode layer 22 has flexibility, the EL having low rigidity and excellent flexibility is provided.
An element can be obtained.
【００２５】また、剛性の高い仮基材２４に絶縁フィル
ム２１を貼付して各層の印刷を行うことによって、印刷
時の絶縁フィルム２１の破れや皺がなくなり確実な印刷
が行えると共に、取扱いも簡便なものとなり、可撓性に
優れたＥＬ素子を容易に製作することができる。Further, by attaching the insulating film 21 to the temporary substrate 24 having high rigidity and printing each layer, the insulating film 21 can be reliably printed without tearing or wrinkling at the time of printing, and the handling is simple. And an EL element having excellent flexibility can be easily manufactured.
【００２６】なお、以上の説明では、仮基材２４の上面
に微粘着性の接着剤２５を塗布し、これによって絶縁フ
ィルム２１を仮基材２４に貼付した後、光透過性電極層
２２等の各層を印刷形成するＥＬ素子の製造方法として
説明したが、図３に示すように、ＥＬ素子の絶縁フィル
ム２１側に接着剤２６を塗布し、これを離型性を有する
仮基材２７に貼付する製造方法としても、同様の効果が
得られることは勿論である。In the above description, the slightly adhesive adhesive 25 is applied to the upper surface of the temporary base material 24, and the insulating film 21 is attached to the temporary base material 24, and then the light-transmitting electrode layer 22 and the like are applied. As described above, as shown in FIG. 3, an adhesive 26 is applied to the insulating film 21 side of the EL element, and this is applied to a temporary base material 27 having a release property, as shown in FIG. As a matter of course, the same effect can be obtained as a manufacturing method of attaching.
【００２７】（実施の形態２）図４は本発明の第２の実
施の形態による照光ユニットの断面図であり、同図にお
いて、ＥＬ素子２３は実施の形態１の場合と同様に、厚
さが５〜５０μｍの絶縁フィルム２１の片面に、光透過
性樹脂にＩＴＯを分散した光透過性電極層２２や、発光
体層３、誘電体層４、背面電極層５、絶縁層６を順次重
ねて印刷形成して構成されている。(Embodiment 2) FIG. 4 is a sectional view of an illuminating unit according to a second embodiment of the present invention. In FIG. 4, the EL element 23 has a thickness similar to that of the first embodiment. A light transmitting electrode layer 22 in which ITO is dispersed in a light transmitting resin, a light emitting layer 3, a dielectric layer 4, a back electrode layer 5, and an insulating layer 6 are sequentially stacked on one surface of an insulating film 21 having a thickness of 5 to 50 μm. It is formed by printing.
【００２８】そして、ＥＬ素子２３上方の絶縁フィルム
２１側には光透過性の弾性ゴム等からなる操作体８が配
置され、下方の背面電極層５側には上面に固定接点１１
Ａ，１１Ｂや配線パターン１２が形成された配線基板１
０と、配線基板１０の固定接点１１Ｂ上に載置された弾
性金属薄板製のドーム状可動接点９によって、スイッチ
回路１３が構成され、これらをケース１４が覆って照光
ユニット２８が構成されていること、及びこのような構
成において、電子機器の回路（図示せず）からＥＬ素子
２３に電圧を印加すると、ＥＬ素子２３が駆動して発光
し、この光がケース１４の複数の孔から突出した操作体
８上面の操作部８Ａを下面から照光するため、周囲が暗
い場合でも操作部８Ａの位置や表示が明確に確認できる
ことは従来の技術の場合と同様である。An operating body 8 made of light-transmitting elastic rubber or the like is arranged on the insulating film 21 side above the EL element 23, and the fixed contact 11 is formed on the upper surface on the lower back electrode layer 5 side.
Wiring board 1 on which A, 11B and wiring pattern 12 are formed
The switch circuit 13 is constituted by the zero and the dome-shaped movable contact 9 made of an elastic metal thin plate placed on the fixed contact 11B of the wiring board 10, and the illumination unit 28 is constituted by covering these with the case 14. In such a configuration, when a voltage is applied to the EL element 23 from a circuit (not shown) of the electronic device, the EL element 23 is driven to emit light, and the light protrudes from the plurality of holes of the case 14. Since the operation unit 8A on the upper surface of the operation body 8 is illuminated from the lower surface, the position and display of the operation unit 8A can be clearly confirmed even in a dark environment, as in the case of the related art.
【００２９】また、操作体８の操作部８Ａを下方へ押圧
操作すると、下面の突起部８ＢがＥＬ素子２３を撓ま
せ、これを介してドーム状可動接点９の中央頂点部が押
圧され、ドーム状可動接点９が反転して配線基板１０の
固定接点１１Ａに接触することによって、スイッチ回路
１３の固定接点１１Ａと１１Ｂの電気的接離が行われる
ことも従来の技術の場合と同様であるが、厚さの薄い絶
縁フィルム２１に柔軟性を有する光透過性樹脂によって
光透過性電極層２２が形成された、可撓性に優れたＥＬ
素子２３を用いて照光ユニット２８が構成されているた
め、ＥＬ素子２３によってドーム状可動接点９の節度感
を損なうことのない、良好な操作感触を有する照光ユニ
ットを得ることができるものである。When the operating portion 8A of the operating body 8 is pressed downward, the projection 8B on the lower surface deflects the EL element 23, and the central apex of the dome-shaped movable contact 9 is pressed through this, and the dome-shaped movable contact 9 is pressed. When the movable contacts 9 are inverted and come into contact with the fixed contacts 11A of the wiring board 10, the fixed contacts 11A and 11B of the switch circuit 13 are electrically connected to and separated from each other, as in the case of the related art. A highly flexible EL in which a light-transmitting electrode layer 22 is formed of a light-transmitting resin having flexibility on a thin insulating film 21;
Since the illuminating unit 28 is configured using the element 23, it is possible to obtain an illuminating unit having a good operation feeling without impairing the moderation of the dome-shaped movable contact 9 by the EL element 23.
【００３０】また、図５に示すように、絶縁フィルム２
９片面の所定の箇所に、光透過性電極層２２等の各層を
重ねて印刷形成すると共に、光透過性電極層２２及び背
面電極層５に一端が接続した給電パターン３０や、他の
配線パターン３１を上記各層以外の箇所に印刷形成し
て、配線機能を備えたＥＬ素子３２を構成し、この給電
パターン３０や配線パターン３１の端部を電子機器内の
コネクタやＬＣＤに接続して電気的接続を行うことによ
って、電子機器内の接続用の配線基板やケーブル等の構
成部品を簡略化することができる。Further, as shown in FIG.
9. A power supply pattern 30 having one end connected to the light-transmitting electrode layer 22 and the back electrode layer 5, and another wiring pattern, while printing and forming each layer such as the light-transmitting electrode layer 22 on a predetermined portion of one surface. An EL element 32 having a wiring function is formed by printing and forming portions 31 other than the above-mentioned layers, and an end of the power supply pattern 30 or the wiring pattern 31 is connected to a connector or an LCD in an electronic device to be electrically connected. By performing the connection, components such as a connection wiring board and a cable in the electronic device can be simplified.
【００３１】[0031]
【発明の効果】以上のように本発明によれば、可撓性に
優れたＥＬ素子と良好な操作感触を有する照光ユニット
を得ることができるという有利な効果が得られる。As described above, according to the present invention, an advantageous effect that an EL element having excellent flexibility and an illuminating unit having a good operation feeling can be obtained can be obtained.
【図１】本発明の第１の実施の形態によるＥＬ素子の断
面図FIG. 1 is a sectional view of an EL device according to a first embodiment of the present invention.
【図２】同製造方法を示す断面図FIG. 2 is a sectional view showing the manufacturing method.
【図３】同断面図FIG. 3 is a sectional view of the same.
【図４】本発明の第２の実施の形態による照光ユニット
の断面図FIG. 4 is a sectional view of an illumination unit according to a second embodiment of the present invention.
【図５】同ＥＬ素子の斜視図FIG. 5 is a perspective view of the EL element.
【図６】従来のＥＬ素子の断面図FIG. 6 is a cross-sectional view of a conventional EL element.
【図７】同照光ユニットの断面図FIG. 7 is a sectional view of the illumination unit.
３ 発光体層 ４ 誘電体層 ５ 背面電極層 ６ 絶縁層 ８ 操作体 ８Ａ 操作部 ８Ｂ 突起部 ９ ドーム状可動接点 １０ 配線基板 １１Ａ，１１Ｂ 固定接点 １２ 配線パターン １３ スイッチ回路 １４ ケース ２１，２９ 絶縁フィルム ２２ 光透過性電極層 ２３，３２ ＥＬ素子 ２４，２７ 仮基材 ２５，２６ 接着剤 ２８ 照光ユニット ３０ 給電パターン ３１ 配線パターン REFERENCE SIGNS LIST 3 luminous body layer 4 dielectric layer 5 back electrode layer 6 insulating layer 8 operating body 8A operating section 8B protrusion 9 dome-shaped movable contact 10 wiring board 11A, 11B fixed contact 12 wiring pattern 13 switch circuit 14 case 21, 29 insulating film 22 Light transmitting electrode layer 23, 32 EL element 24, 27 Temporary base material 25, 26 Adhesive 28 Illumination unit 30 Power supply pattern 31 Wiring pattern
Claims (4)
ィルムと、この絶縁フィルム片面の全面或いは所定の箇
所に、導電粉を分散した柔軟性を有する光透過性樹脂を
印刷して形成された光透過性電極層と、光透過性電極層
上に順次重ねて印刷形成された発光体層及び誘電体層、
背面電極層からなる分散型エレクトロルミネッセンス素
子。1. A light-transmitting insulating film having a thickness of 5 to 50 μm, and a light-transmitting resin having flexibility dispersed with conductive powder printed on the entire surface of one surface of the insulating film or at a predetermined position. Light-transmitting electrode layer and a light-emitting layer and a dielectric layer, which are sequentially printed and formed on the light-transmitting electrode layer,
A dispersion-type electroluminescent device comprising a back electrode layer.
過性電極層及び発光体層、誘電体層、背面電極層を重ね
て印刷形成すると共に、光透過性電極層及び背面電極層
に一端が接続した給電パターンや他の配線パターンを上
記各層以外の箇所に印刷形成した請求項１記載の分散型
エレクトロルミネッセンス素子。2. A light transmitting electrode layer, a light emitting layer, a dielectric layer, and a back electrode layer are superimposed and printed on a predetermined portion of one surface of an insulating film, and one end is formed on the light transmitting electrode layer and the back electrode layer. 2. The dispersion-type electroluminescent device according to claim 1, wherein a power supply pattern or another wiring pattern connected to the device is printed and formed on a portion other than the respective layers.
貼付した絶縁フィルムに、光透過性電極層及び発光体
層、誘電体層、背面電極層や給電パターン、配線パター
ンを印刷形成した後、仮基材から絶縁フィルムを剥がし
て分散型エレクトロルミネッセンス素子とする請求項１
または２記載の分散型エレクトロルミネッセンス素子の
製造方法。3. After printing a light-transmitting electrode layer, a luminous body layer, a dielectric layer, a back electrode layer, a power supply pattern, and a wiring pattern on an insulating film attached to a temporary substrate having higher rigidity than the insulating film. And dispersing the insulating film from the temporary base material to obtain a dispersion-type electroluminescent device.
Or the method for producing a dispersion-type electroluminescent device according to 2.
ロルミネッセンス素子と、この素子の絶縁フィルム側に
配置された操作体と、上記素子の背面電極層側に配置さ
れたスイッチ回路からなり、操作体下面が上記素子を撓
ませ、これを介してスイッチ回路の電気的接離が行われ
る照光ユニット。4. An operation device comprising: the dispersion-type electroluminescence device according to claim 1 or 2; an operation body disposed on the insulating film side of the device; and a switch circuit disposed on the back electrode layer side of the device. An illuminating unit in which the lower surface of the body bends the above-described element, and the switch circuit is electrically connected and separated through the element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10021790A JPH11219791A (en) | 1998-02-03 | 1998-02-03 | Dispersion type electroluminescence element, its manufacture and illuminating unit using it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10021790A JPH11219791A (en) | 1998-02-03 | 1998-02-03 | Dispersion type electroluminescence element, its manufacture and illuminating unit using it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11219791A true JPH11219791A (en) | 1999-08-10 |
Family
ID=12064865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10021790A Pending JPH11219791A (en) | 1998-02-03 | 1998-02-03 | Dispersion type electroluminescence element, its manufacture and illuminating unit using it |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11219791A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1071313A1 (en) * | 1999-07-21 | 2001-01-24 | Matsushita Electric Industrial Co., Ltd. | Electroluminescence element and lighting unit having the same |
-
1998
- 1998-02-03 JP JP10021790A patent/JPH11219791A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1071313A1 (en) * | 1999-07-21 | 2001-01-24 | Matsushita Electric Industrial Co., Ltd. | Electroluminescence element and lighting unit having the same |
| US6611097B1 (en) | 1999-07-21 | 2003-08-26 | Matsushita Electric Industrial Co., Ltd. | Electroluminescent element comprising reduced number of parts and lighting unit having the same |
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