JPH0935873A - El lamp and manufacture thereof - Google Patents
El lamp and manufacture thereofInfo
- Publication number
- JPH0935873A JPH0935873A JP7178499A JP17849995A JPH0935873A JP H0935873 A JPH0935873 A JP H0935873A JP 7178499 A JP7178499 A JP 7178499A JP 17849995 A JP17849995 A JP 17849995A JP H0935873 A JPH0935873 A JP H0935873A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- electrode layer
- insulating
- resin
- predetermined pattern
- 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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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は各種電子機器の照光部に
用いられるＥＬランプおよびその製造方法に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an EL lamp used in an illuminating section of various electronic devices and a manufacturing method thereof.
【０００２】[0002]
【従来の技術】近年、小型のＩＣ駆動インバータが開発
されたこと等から通信機器、映像機器、音響機器をはじ
めとする各種電子機器の液晶表示部やスイッチのバック
ライトとして、薄くかつ面発光するＥＬランプの需要が
増大している。2. Description of the Related Art In recent years, small-sized IC drive inverters have been developed, and as a backlight for liquid crystal display units and switches of various electronic devices such as communication devices, video devices, and audio devices, they emit light thinly and in a plane. The demand for EL lamps is increasing.
【０００３】このような従来の分散型のＥＬランプは、
図６の平面図、図６のＡ−Ｂ断面図である図７に示すよ
うに、ポリエチレンテレフタレート（ＰＥＴ）フィルム
等の絶縁性透明フィルム１上面全面に酸化インジュウム
スズをスパッタリング等で積層して透明導電膜１２を形
成し、この透明導電膜１２上にシアノエチルプルランや
フッ化ビニリデン系ゴム等の高誘電性樹脂をジメチルホ
ルムアミドやＮメチルピドリドン等の有機溶剤に溶解し
たものに硫化亜鉛等の発光体を分散させた発光体層３を
スクリーン印刷等によりパターン印刷して乾燥して形成
し、この発光体層３上に重ねて発光体層３と同系の樹脂
にチタン酸バリュウム等の高誘電性物質を分散させた誘
電体層４、カーボンレジン系ペーストや銀レジン系ペー
ストで背面電極層５、絶縁ペーストで絶縁コート層６を
それぞれパターン印刷して乾燥することにより積層して
形成していた。透明導電膜１２側の集電電極５ｂは透明
導電膜１２の一部を発光体層３、誘電体層４、背面電極
層５、絶縁コート層６から露出させ銀レジン系ペースト
等をパターン印刷して乾燥することにより形成し、背面
電極層５側の集電電極５ａは背面電極層５の端部を絶縁
コート層６から露出させて形成していた。Such a conventional dispersion type EL lamp is
As shown in the plan view of FIG. 6 and FIG. 7 which is a cross-sectional view taken along the line AB of FIG. 6, indium tin oxide is laminated on the entire upper surface of the insulating transparent film 1 such as a polyethylene terephthalate (PET) film by sputtering or the like to obtain a transparent conductive film. A film 12 is formed, and a high dielectric resin such as cyanoethyl pullulan or vinylidene fluoride rubber is dissolved in an organic solvent such as dimethylformamide or N-methylpyridone on the transparent conductive film 12 to disperse a luminous body such as zinc sulfide. The luminous body layer 3 thus formed is formed by pattern-printing by screen printing or the like and drying, and a high dielectric substance such as barium titanate is dispersed in a resin of the same type as the luminous body layer 3 by superposing on the luminous body layer 3. Pattern the dielectric layer 4, the back electrode layer 5 with a carbon resin paste or a silver resin paste, and the insulating coating layer 6 with an insulating paste. It was formed by laminating by drying and printing. For the collector electrode 5b on the transparent conductive film 12 side, a part of the transparent conductive film 12 is exposed from the light emitting layer 3, the dielectric layer 4, the back electrode layer 5, and the insulating coating layer 6 and a silver resin paste or the like is pattern-printed. Then, the current collecting electrode 5a on the back electrode layer 5 side was formed by exposing the end portion of the back electrode layer 5 from the insulating coat layer 6.
【０００４】また、集電電極５ａ，５ｂの配線が長く必
要な場合はＡ−Ｂ断面図を図８に示すように誘電体層４
に使用する高誘電性樹脂が透明導電膜１２との密着性が
悪いため、別途エポキシ系樹脂等による絶縁膜１３を設
けることにより形成していたものであった。When the wiring of the collecting electrodes 5a and 5b is required to be long, a dielectric layer 4 is formed as shown in a cross-sectional view AB in FIG.
Since the high-dielectric resin used for the above has poor adhesion to the transparent conductive film 12, it was formed by separately providing the insulating film 13 made of epoxy resin or the like.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら上記従来
の構成では、透明導電膜１２をスパッタリングしたＰＥ
Ｔフィルムは高価であるためにＥＬランプの集電電極５
ａ，５ｂを外部接続する場合、集電電極配線を長くする
と発光部分以外にも透明導電膜１２付きのＰＥＴフィル
ムが必要となって高価になる課題があった。また、プリ
ント基板等へのＥＬランプ電極の接続を異方導電性接着
剤で行うことは全面スパッタリング等による透明導電膜
１２付きＰＥＴフィルム上に別途絶縁層を形成せねばな
らず、総材厚が厚くなるため熱伝導が悪くきわめて接着
しにくいものであった。また、コネクタ接続の場合もＰ
ＥＴフィルム端面全周に透明導電膜１２が存在するため
に短絡の危険性があり、実質的に困難であり、さらに透
明導電膜１２をあらかじめエッチングによって発光部分
以外を取り除く方法はより高価なものであった。However, in the above-mentioned conventional structure, the PE formed by sputtering the transparent conductive film 12 is used.
Since the T film is expensive, the collector electrode 5 of the EL lamp
When a and 5b are externally connected, if the collector electrode wiring is lengthened, there is a problem that a PET film with the transparent conductive film 12 is required in addition to the light emitting portion, which is expensive. In addition, connecting the EL lamp electrode to the printed circuit board or the like with an anisotropic conductive adhesive requires forming an additional insulating layer on the PET film with the transparent conductive film 12 by overall sputtering, etc. Since it became thick, heat conduction was poor and it was extremely difficult to adhere. Also, in case of connector connection, P
Since the transparent conductive film 12 is present on the entire circumference of the end surface of the ET film, there is a risk of short circuit, which is substantially difficult. Further, the method of removing the transparent conductive film 12 except the light emitting portion by etching in advance is more expensive. there were.
【０００６】このようなことから透明電極を可視光透過
性を有する導電ペーストでパターン印刷形成すれば前記
各課題の解決は可能であり、この可視光透過性を有する
導電ペーストは特開昭６４−１０５９５号公報、特開昭
６３−１０４９６号公報に開示されて公知となってい
る。しかしながら、このような可視光透過性を有する導
電ペーストの塗膜上に重ねて発光体や誘電体を印刷する
場合、発光体、誘電体に使用する高誘電性樹脂を溶解し
ているジメチルホルムアミドやＮメチルピドリドン等の
極性溶剤により、乾燥時の高温のために導電性能が大幅
に劣化し、全くあるいは集電電極近傍しか発光しなくな
るという新たな問題が発生するために実現できないとい
う課題を有していた。従って、背面電極層５として使用
したり、透明電極層と発光体層３等を別々に形成してお
き、後でラミネート等により貼り合わせる用途には使用
できても、発光体層３、誘電体層４等を重ねて印刷する
構成には適用できないという課題を有したものであっ
た。For these reasons, the above problems can be solved by pattern-printing the transparent electrode with a conductive paste having visible light transmittance. This conductive paste having visible light transmittance is disclosed in Japanese Patent Laid-Open No. 64-64- It is known and disclosed in Japanese Patent No. 10595 and Japanese Patent Application Laid-Open No. 63-10496. However, when a luminescent material or a dielectric is printed on a coating film of a conductive paste having such a visible light transmittance, dimethylformamide or a dimethylformamide in which a high dielectric resin used for the luminescent material or the dielectric is dissolved. A polar solvent such as N-methylpyridone causes a significant problem that the conductive performance is significantly deteriorated due to the high temperature during drying, and a new problem occurs in which light is emitted at all or only in the vicinity of the collecting electrode, which is a problem that cannot be realized. It was Therefore, even if it can be used as the back electrode layer 5, or the transparent electrode layer and the light emitting layer 3 are separately formed and then used for laminating and laminating, the light emitting layer 3, the dielectric layer, etc. This has a problem that it cannot be applied to a configuration in which the layers 4 and the like are printed in an overlapping manner.
【０００７】本発明はこのような従来の課題を解決し、
簡単な構成で容易に製造でき、しかも安定した性能を発
揮することが可能なＥＬランプおよびその製造方法を提
供することを目的とするものである。The present invention solves such conventional problems,
It is an object of the present invention to provide an EL lamp which can be easily manufactured with a simple structure and can exhibit stable performance, and a manufacturing method thereof.
【０００８】[0008]
【課題を解決するための手段】前記課題を解決するため
本発明は、絶縁性透明フィルム上に透明電極層、発光体
層、誘電体層、背面電極層、集電電極、絶縁コート層を
全て所定のパターンで印刷形成すると共に、上記透明電
極層形成に使用する導電ペーストを、可視光透過性を有
する導電性粉末を絶縁性樹脂中または絶縁性樹脂を溶解
した樹脂溶液中に分散させたものとし、上記可視光透過
性を有する導電性粉末を酸化インジュウムスズ粉末と
し、この酸化インジュウム粉末が針状粉（Ａ）と微粒子
粉（Ｂ）よりなり、（Ａ）：（Ｂ）の重量比率が１０
０：０〜２０：８０、かつ全導電性粉末（Ｃ）と分散さ
せる絶縁性樹脂（Ｄ）の重量比率（Ｃ）：（Ｄ）＝４
５：５５〜９５：５とし、さらに前記導電性粉末を分散
させる絶縁性樹脂が加熱硬化性または光硬化性からなる
構成としたものである。In order to solve the above problems, the present invention provides a transparent electrode layer, a light emitting layer, a dielectric layer, a back electrode layer, a current collecting electrode, and an insulating coating layer on an insulating transparent film. The conductive paste used for forming the transparent electrode layer, which is formed by printing in a predetermined pattern, is obtained by dispersing a conductive powder having visible light transparency in an insulating resin or a resin solution in which the insulating resin is dissolved. The conductive powder having visible light transparency is indium tin oxide powder, the indium oxide powder is composed of acicular powder (A) and fine particle powder (B), and the weight ratio of (A) :( B) is 10.
0: 0 to 20:80, and the weight ratio (C) :( D) = 4 of the total conductive powder (C) and the insulating resin (D) to be dispersed.
It is set to 5:55 to 95: 5, and the insulating resin in which the conductive powder is dispersed is heat curable or photocurable.
【０００９】[0009]
【作用】この構成により印刷型の透明電極層が発光体
層、誘電体層等の重ね印刷に対して導電性の劣化がなく
安定であり、従来のスパッタリング法による透明導電膜
を使用したものと輝度は変わらない。かつ高温高湿度環
境に対しても導電性は安定しており輝度の耐環境信頼性
も安定している。With this configuration, the print-type transparent electrode layer is stable without deterioration of the conductivity against overprinting of the light-emitting layer, the dielectric layer, etc., and the transparent conductive film formed by the conventional sputtering method is used. The brightness does not change. Moreover, the conductivity is stable even in a high temperature and high humidity environment, and the environment resistance reliability of brightness is also stable.
【００１０】さらに透明電極層を含めてすべてパターン
印刷で重ねて形成できるために製造設備が統一化でき、
集電電極の外部接続部が発光部と離れていても同一絶縁
性透明フィルム上に集電電極の配線のみ形成すればよ
く、安価に製造することが可能である。Furthermore, since the transparent electrode layer and the transparent electrode layer can be formed by pattern printing, the manufacturing equipment can be unified.
Even if the external connection part of the current collecting electrode is separated from the light emitting part, only the wiring of the current collecting electrode needs to be formed on the same insulating transparent film, and it can be manufactured at low cost.
【００１１】また、集電電極を外部接続する場合、接続
部分の絶縁性透明フィルム上に従来のように全面スパッ
タリング等による透明導電膜や絶縁膜がないため、異方
導電性接着剤を外部接続部の先端部分の集電電極上およ
び絶縁性透明フィルム上に形成しておくことによりプリ
ント基板への接続が容易になり、また外部接続部の先端
部分の絶縁性透明フィルム裏面に補強板を形成しておく
ことによりコネクタでの接続が容易となるものである。Further, when the collector electrode is externally connected, an anisotropic conductive adhesive is externally connected to the connecting portion because there is no transparent conductive film or insulating film formed on the insulating transparent film at the connecting portion by conventional sputtering. By forming it on the collecting electrode and the insulating transparent film at the tip of the external connection part, connection to the printed circuit board becomes easy, and a reinforcing plate is formed on the back surface of the insulating transparent film at the tip of the external connection part. This makes it easier to connect with a connector.
【００１２】[0012]
（実施例１）以下、本発明の第１の実施例について図
１、図２を用いて説明する。(Embodiment 1) A first embodiment of the present invention will be described below with reference to FIGS.
【００１３】絶縁性透明フィルム１として７５μｍのポ
リエチレンテレフタレート（以下、ＰＥＴという）フィ
ルムに加熱硬化性絶縁性樹脂（エポキシ樹脂、油化シェ
ル製＃８２８とフェノキシ樹脂、東都化成製ＹＰ−４０
を等重量比混合したもの１００に対し硬化剤としてイミ
ダゾールブロックイソシアネート、第一工業製薬製Ｇ８
００９Ｂを１５重量部添加したもの）に酸化インジュウ
ム粉（住友金属鉱山製ＳＣＰ−Ｘ）を６０重量％添加し
て３本ロール分散し、溶剤（イソホロン）で１３Ｐａに
粘度調整した透明電極ペーストをスクリーン印刷し、１
５５℃１５分乾燥して乾燥膜厚３〜５μｍの透明電極層
２をパターン形成した。A 75 μm polyethylene terephthalate (hereinafter referred to as PET) film is used as the insulating transparent film 1 on a heat-curable insulating resin (epoxy resin, oil-made shell # 828 and phenoxy resin, Toto Kasei YP-40).
Of 100 in an equal weight ratio, imidazole blocked isocyanate as a curing agent, G8 manufactured by Daiichi Kogyo Seiyaku
Indium oxide powder (SCP-X manufactured by Sumitomo Metal Mining Co., Ltd.) was added to 15 parts by weight of 009B) and dispersed in three rolls, and a transparent electrode paste whose viscosity was adjusted to 13 Pa with a solvent (isophorone) was used as a screen. Print 1
The transparent electrode layer 2 having a dry film thickness of 3 to 5 μm was patterned by drying at 55 ° C. for 15 minutes.
【００１４】以下、透明電極層２上に下記各ペーストを
同様に所定パターンで塗り重ねていった。発光体層３；
シアノエチルプルラン樹脂７０重量％とシアノエチルポ
リビニルアルコール樹脂３０重量％の混合溶液（信越化
学工業製ＣＲ−Ｍをジメチルホルムアミドに３０重量％
溶解したもの）５０ｇ、硬化剤としてイミダゾールブロ
ックイソシアネート（第一工業製薬製Ｇ８００９Ｂ）を
２ｇを混合したものに発光体（米国シルバニア製ＴＹＰ
Ｅ４０）を１００ｇ攪拌分散させたペースト、乾燥膜厚
３５μｍ。誘電体層４；フッ化ビニリデン共重合体ゴム
溶液（ダイキン工業製ダイエルＧ９０２をイソホロンに
３５重量％溶解したもの）５３ｇに硬化剤としてジクミ
ルパーオキサイド０．０２ｇ、ＢａＴｉＯ3（関東化学
工業製）粉末５０ｇを３本ロールで分散したペースト、
乾燥膜厚３５μｍ。背面電極層５；導電ペースト（東洋
紡製ＤＷ−２５０Ｈ）、乾燥膜厚１０μｍ。絶縁コート
層６；絶縁ペースト（藤倉化成製ＸＢ−８０４Ａ）、乾
燥膜厚３０μｍ。Thereafter, each of the following pastes was similarly applied on the transparent electrode layer 2 in a predetermined pattern. Luminous body layer 3;
A mixed solution of 70% by weight of cyanoethyl pullulan resin and 30% by weight of cyanoethyl polyvinyl alcohol resin (30% by weight of CR-M manufactured by Shin-Etsu Chemical Co., Ltd. in dimethylformamide).
50 g of dissolved substance, 2 g of imidazole blocked isocyanate (G8009B manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.) as a curing agent, and a luminous body (TYP manufactured by Sylvania, USA)
A paste in which 100 g of E40) was dispersed by stirring, a dry film thickness of 35 μm. Dielectric layer 4; Vinylidene fluoride copolymer rubber solution (Dikin G902 manufactured by Daikin Industries, Ltd. dissolved in isophorone at 35% by weight) 53 g, dicumyl peroxide 0.02 g as a curing agent, BaTiO 3 (manufactured by Kanto Chemical Co., Inc.) A paste in which 50 g of powder is dispersed by three rolls,
Dry film thickness 35 μm. Back electrode layer 5; conductive paste (DW-250H manufactured by Toyobo), dry film thickness 10 μm. Insulation coat layer 6; insulation paste (XB-804A manufactured by Fujikura Kasei), dry film thickness 30 μm.
【００１５】以上を重ね印刷して乾燥し、この作製した
ＥＬランプの平面図を図１に、図１のＡ−Ｂ断面図を図
２に示す。本実施例では背面電極層５と集電電極５ａ，
５ｂは一体で同時にパターン印刷形成した。本試料の集
電電極５ａ，５ｂに１００Ｖ４００Hzを印加したとこ
ろ、初期輝度７４．８Ｃｄ／ｍ2であった。本試料を点
灯状態で７０℃および４０℃、９０〜９５％ＲＨ槽中に
放置して輝度低下を測定した結果、５０％輝度半減期は
７０℃槽中では３００時間、４０℃、９０〜９５％ＲＨ
槽中では１０００時間であった。FIG. 1 shows a plan view of the EL lamp thus produced, which is then overprinted and dried, and FIG. 2 is a sectional view taken along line AB of FIG. In this embodiment, the back electrode layer 5 and the collecting electrode 5a,
5b was integrally formed by pattern printing at the same time. When 100 V 400 Hz was applied to the collector electrodes 5a and 5b of this sample, the initial luminance was 74.8 Cd / m 2 . This sample was left in a 90 ° -95% RH bath at 70 ° C and 40 ° C in a lit state to measure a decrease in luminance. As a result, a 50% luminance half-life was 300 hours in a 70 ° C bath, 40 ° C, 90-95%. % RH
It was 1000 hours in the tank.
【００１６】また、上記酸化インジュウム粉末を構成す
る針状粉（Ａ）の割合が２０％未満では発光体層３、誘
電体層４の重ね印刷、乾燥時の導電性劣化が大きく、輝
度が低下し、高温高湿度雰囲気中に放置するとさらに輝
度が低下する。また、全導電性粉末（Ｃ）が４５％以下
では初期よりもＥＬを発光させるに十分な導電性が得ら
れず、輝度のバラツキが大である。全導電性粉末（Ｃ）
が９５％以上では印刷での均一な塗膜が得られず、光透
過率も低下し、輝度が低下したり、輝度バラツキが大き
くなる。望ましくは、（Ａ）：（Ｂ）＝１００：０〜４
０：６０、（Ｃ）：（Ｄ）＝５５：４５〜８０：２０が
光透過率と導電性のバランスおよび重ね印刷、環境変動
での導電性の安定性がもっともよい。Further, when the ratio of the acicular powder (A) constituting the indium oxide powder is less than 20%, the deterioration of the conductivity is large when the luminous layer 3 and the dielectric layer 4 are overprinted and dried, and the brightness is lowered. However, when left in a high temperature and high humidity atmosphere, the brightness further decreases. Further, when the total conductive powder (C) is 45% or less, sufficient conductivity for making the EL emit light cannot be obtained from the initial stage, resulting in large variation in brightness. All conductive powder (C)
Is 95% or more, a uniform coating film cannot be obtained by printing, the light transmittance is lowered, the luminance is lowered, and the luminance variation is increased. Desirably, (A) :( B) = 100: 0-4
0:60, (C) :( D) = 55: 45 to 80:20 are the best in terms of the balance between light transmittance and conductivity, overlay printing, and stability of conductivity due to environmental changes.
【００１７】（実施例２）上記実施例１において、使用
した透明電極ペースト用硬化性絶縁性樹脂を同一固形分
比率にして、 （ａ）光硬化性樹脂；アクリレート系樹脂（スリーボン
ド社製３０３１） （ｂ）光硬化性樹脂；アクリレート系樹脂（三菱レーヨ
ン社製ＵＲ３０００） （ｃ）熱硬化性樹脂；ウレタン変性エポキシ樹脂（旭電
化工業製ＥＰＵ−６Ａ）７０重量％とポリエステル樹脂
（東洋紡績製＃３００）３０重量％を混合し、硬化剤と
してイミダゾールブロックイソシアネート（第一工業製
薬製Ｇ８００９Ｂ）を樹脂１００重量部に対し２０重量
部添加したもの。Example 2 The curable insulating resin for transparent electrode paste used in the above Example 1 was made to have the same solid content ratio, and (a) a photocurable resin; an acrylate resin (3031 manufactured by ThreeBond Co.). (B) Photocurable resin; acrylate resin (UR3000 manufactured by Mitsubishi Rayon Co., Ltd.) (c) Thermosetting resin: Urethane-modified epoxy resin (EPU-6A manufactured by Asahi Denka Co., Ltd.) 70% by weight and polyester resin (manufactured by Toyobo # 300) 30% by weight, and 20 parts by weight of imidazole blocked isocyanate (G8009B manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.) as a curing agent was added to 100 parts by weight of the resin.
【００１８】（ｄ）熱硬化性樹脂；エポキシ樹脂（油化
シェル製＃８２８）６０重量％とエポキシ変性ポリエス
テル樹脂（東洋紡績製ＥＰ２９４０）４０重量％を混合
し、硬化剤としてイミダゾールブロックイソシアネート
（第一工業製薬製Ｇ８００９Ｂ）を樹脂１００重量部に
対し１０重量部添加したもの。(D) Thermosetting resin: 60% by weight of an epoxy resin (# 828 manufactured by Yuka Shell Co., Ltd.) and 40% by weight of an epoxy-modified polyester resin (EP2940 manufactured by Toyobo Co., Ltd.) are mixed, and an imidazole blocked isocyanate (No. 1) is used as a curing agent. A product obtained by adding 10 parts by weight of G8009B manufactured by Ichigo Seiyaku Co., Ltd. to 100 parts by weight of the resin.
【００１９】（ｅ）比較例；シアノエチル樹脂（信越化
学工業製ＣＲ−Ｍ）１００重量部にに硬化剤としてオキ
シムブロックイソシアネート（第一工業製薬製ＫＥ１０
０１）５重量部添加したもの。(E) Comparative Example: 100 parts by weight of cyanoethyl resin (CR-M manufactured by Shin-Etsu Chemical Co., Ltd.) was added to oxime-blocked isocyanate (KE10 manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.) as a curing agent.
01) 5 parts by weight added.
【００２０】（ｆ）比較例；ポリフッ化ビニリデン系ゴ
ム（ダイキン工業製ダイエルＧ２０１）１００重量部に
硬化剤としてメラミン３重量部添加したもの。(F) Comparative Example: 100 parts by weight of polyvinylidene fluoride rubber (Daiel G201 manufactured by Daikin Industries, Ltd.) added with 3 parts by weight of melamine as a curing agent.
【００２１】（ｇ）比較例；ウレタン変性ポリエステル
樹脂（東洋紡績製ＵＲ８３００）以上の各樹脂を用いた
透明電極ペーストを用い実施例１と同様にＥＬランプを
作製した。なお、（ａ）については３００〜４００ｎｍ
に発光波長を有するＵＶランプで塗膜を硬化させた。１
００Ｖ４００Hzでの初期輝度はそれぞれ（ａ）：７６．
２Ｃｄ／ｍ2（ｂ）：７０．３Ｃｄ／ｍ2（ｃ）：７４．
６Ｃｄ／ｍ2（ｄ）：７５．６Ｃｄ／ｍ2であった。ま
た、７０℃および６０℃９０〜９５％ＲＨ雰囲気中での
連続点灯の輝度劣化のレベルは上記実施例１と同等レベ
ルであった。(G) Comparative Example: A urethane modified polyester resin (UR8300 manufactured by Toyobo Co., Ltd.) An EL lamp was manufactured in the same manner as in Example 1 using a transparent electrode paste containing the above resins. In addition, about (a), it is 300-400 nm.
The coating film was cured with a UV lamp having an emission wavelength of 1. 1
The initial brightness at 00V 400Hz is (a): 76.
2 Cd / m 2 (b): 70.3 Cd / m 2 (c): 74.
6 Cd / m 2 (d): 75.6 Cd / m 2 . Further, the level of luminance deterioration of continuous lighting in the atmosphere of 70 ° C. and 60 ° C. 90 to 95% RH was at the same level as in Example 1 above.
【００２２】比較例（ｅ）および（ｇ）は全く発光しな
かった。比較例（ｆ）は集電電極５ａの近傍のみ発光し
た。Comparative Examples (e) and (g) did not emit light at all. Comparative Example (f) emitted light only in the vicinity of the collector electrode 5a.
【００２３】（実施例３）上記実施例１において使用し
た透明電極ペーストの導電性粉末を針状酸化インジュウ
ムスズ（住友金属鉱山製ＳＣＰ−ＳＸ）と微粒子状酸化
インジュウムスズ（住友金属鉱山製ＵＦＰ−Ｘ）の混合
粉末とし、その配合比率を変化させた。また、絶縁性樹
脂中への全導電性粉末の配合比率を変化させた。以上２
つのパラメータをマトリックスで組合せてＥＬランプを
作製し、完成品での輝度、輝度ムラと透明電極部分の抵
抗値とを測定し、その結果を（表１）に示す。(Embodiment 3) The conductive powder of the transparent electrode paste used in the above-mentioned Embodiment 1 was prepared by using acicular indium tin oxide (SCP-SX manufactured by Sumitomo Metal Mining Co., Ltd.) and indium tin oxide fine particle (UFP-X manufactured by Sumitomo Metal Mining Co., Ltd.). Was mixed powder, and the compounding ratio was changed. Moreover, the compounding ratio of all the conductive powders in the insulating resin was changed. Above 2
An EL lamp was manufactured by combining two parameters in a matrix, and the brightness, brightness unevenness, and resistance value of the transparent electrode portion of the finished product were measured, and the results are shown in (Table 1).
【００２４】[0024]
【表１】 [Table 1]
【００２５】なお、抵抗値は単位ｋΩ／□、１０ＭΩ以
上は∞（無限大）、（−）部はペースト状にならず、印
刷できなかったことを示す。輝度は単位Ｃｄ／ｍ2。ま
た、上記各試料を４０℃、９０〜９５％ＲＨ雰囲気中に
放置すると針状導電粉末が１０％以下のものは輝度が大
幅に低下したり発光しなくなった。The unit of resistance value is kΩ / □, 10 MΩ or more is ∞ (infinity), and the (−) part is not in a paste state, indicating that printing cannot be performed. Luminance is in Cd / m 2 . When each of the above samples was left in an atmosphere of 40 ° C. and 90 to 95% RH, the brightness of the needle-like conductive powder was 10% or less, and the brightness was not significantly reduced.
【００２６】（実施例４）上記実施例１のＥＬランプの
集電電極５ａ，５ｂの終端の熱圧着接続部９を異方導電
性接着剤（ソニーケミカル製ＣＰ７１３１）でプリント
配線板１０に１８０℃、３５kg／cm2、３０秒の熱圧着
条件で接続した。図３に熱圧着後の状態図を示す。プリ
ント基板側に駆動インバータ回路を搭載して発光部７を
点灯させた。点灯状態で集電電極の配線部８を自在に折
り曲げしても点灯状態に全く異常は発生しなかった。(Embodiment 4) The thermocompression-bonding connection portion 9 at the end of the current collecting electrodes 5a and 5b of the EL lamp of the above-mentioned Embodiment 1 is attached to the printed wiring board 10 by an anisotropic conductive adhesive (CP7131 manufactured by Sony Chemical). Connection was performed under thermocompression bonding conditions of 30 ° C., 35 kg / cm 2 , and 30 seconds. FIG. 3 shows a state diagram after thermocompression bonding. A drive inverter circuit was mounted on the printed circuit board side to turn on the light emitting section 7. Even if the wiring portion 8 of the collector electrode was freely bent in the lit state, no abnormality occurred in the lit state.
【００２７】（実施例５）上記実施例１のＥＬランプに
おいて、集電電極５ａ，５ｂの終端の裏面に接着剤付の
１８８μｍのＰＥＴフィルムを貼り付け、図４に各層部
分断面図を示すフィルムコネクタの接続が可能なＥＬラ
ンプを作製した。(Embodiment 5) In the EL lamp of the above Embodiment 1, a 188 μm PET film with an adhesive is attached to the back surface of the terminal ends of the current collecting electrodes 5a and 5b, and FIG. 4 is a partial sectional view of each film. An EL lamp with a connectable connector was produced.
【００２８】（実施例６）上記実施例１のＥＬランプに
おいて、背面電極層５以降の形成を以下のように変更し
た。集電電極５ａ，５ｂ；導電ペースト（東洋紡製ＤＷ
−２５０Ｈ）、乾燥膜厚１０μｍ。背面電極層５：導電
ペースト（東洋紡製ＤＹ−１５０Ｈ）、乾燥膜厚８μ
ｍ。絶縁コート層６；絶縁ペースト（東芝シリコーン製
ＴＳＥ３２２１）、乾燥膜厚２５μｍ。以上を重ね印刷
して図５にＡ−Ｂ断面図を示すＥＬランプを製作した。
集電電極５ａ，５ｂは銀レジン系ペースト、背面電極層
５はカーボンレジン系ペーストである。Example 6 In the EL lamp of Example 1 described above, the formation of the back electrode layer 5 and subsequent layers was changed as follows. Current collecting electrodes 5a, 5b; conductive paste (Toyobo DW
-250H), dry film thickness 10 μm. Back electrode layer 5: conductive paste (TOYOBO DY-150H), dry film thickness 8 μ
m. Insulation coat layer 6; insulation paste (TSE3221 made by Toshiba Silicone), dry film thickness 25 μm. The above process was overprinted to manufacture an EL lamp whose cross-sectional view is shown in FIG.
The collector electrodes 5a and 5b are silver resin paste, and the back electrode layer 5 is carbon resin paste.
【００２９】本試料に１００Ｖ４００Hzを印加したとこ
ろ、初期輝度７２．３Ｃｄ／cm2であった。When 100 V 400 Hz was applied to this sample, the initial luminance was 72.3 Cd / cm 2 .
【００３０】[0030]
【発明の効果】以上実施例でも示した如く本発明による
ＥＬランプは、透明電極層の上に発光体層、誘電体層を
重ねてパターン印刷・乾燥しても透明電極層の導電率の
低下がなく、透明電極層を含めてすべて印刷で形成でき
るため安価に製造でき、さらに集電電極の電気的接続を
容易とすることが可能である。As shown in the above examples, in the EL lamp according to the present invention, the conductivity of the transparent electrode layer is lowered even if the light emitting layer and the dielectric layer are overlaid on the transparent electrode layer and the pattern is printed and dried. Since it can be formed by printing, including the transparent electrode layer, it can be manufactured at low cost and the electrical connection of the collector electrode can be facilitated.
【００３１】また、ＰＥＴ等の絶縁性透明フィルム上に
導電ペーストで回路配線パターンを印刷形成したフレキ
シブル回路配線板（ＦＰＣ）が知られているが本発明に
よれば、ＦＰＣの必要所定部分にパターン印刷によりＥ
Ｌランプを形成することも容易であり産業上の効果は大
である。Further, there is known a flexible circuit wiring board (FPC) in which a circuit wiring pattern is formed by printing a conductive paste on an insulating transparent film such as PET, but according to the present invention, a pattern is formed in a necessary predetermined portion of the FPC. E by printing
It is easy to form an L lamp and the industrial effect is great.
【図１】本発明の実施例１におけるＥＬランプの平面図FIG. 1 is a plan view of an EL lamp according to a first embodiment of the present invention.
【図２】図１のＡ−Ｂ断面図FIG. 2 is a cross-sectional view taken along a line AB in FIG.
【図３】本発明の実施例４におけるＥＬランプの異方導
電性接着剤によるプリント回路配線への接続状態斜視図FIG. 3 is a perspective view showing a connection state of an EL lamp to a printed circuit wiring with an anisotropic conductive adhesive according to a fourth embodiment of the present invention.
【図４】本発明の実施例５におけるコネクタ接続を可能
にしたＥＬランプの各層の構成を示す部分断面斜視図FIG. 4 is a partial cross-sectional perspective view showing the configuration of each layer of an EL lamp that enables connector connection in Embodiment 5 of the present invention.
【図５】本発明の実施例６におけるＥＬランプのＡ−Ｂ
断面図FIG. 5 is an AB of an EL lamp according to a sixth embodiment of the present invention.
Sectional view
【図６】従来のＥＬランプを示す平面図FIG. 6 is a plan view showing a conventional EL lamp.
【図７】図６のＡ−Ｂ断面図7 is a cross-sectional view taken along the line AB of FIG.
【図８】従来のＥＬランプのＡ−Ｂ断面図FIG. 8 is a cross-sectional view taken along the line AB of the conventional EL lamp.
１ 絶縁性透明フィルム ２ 透明電極層 ３ 発光体層 ４ 誘電体層 ５ 背面電極層 ５ａ，５ｂ 集電電極 ６ 絶縁コート層 ７ 発光部 ８ 配線部 ９ 熱圧着接続部 １０ プリント回路配線板 １１ 補強板 DESCRIPTION OF SYMBOLS 1 Insulating transparent film 2 Transparent electrode layer 3 Light emitting layer 4 Dielectric layer 5 Back electrode layer 5a, 5b Current collecting electrode 6 Insulation coating layer 7 Light emitting part 8 Wiring part 9 Thermocompression bonding part 10 Printed circuit wiring board 11 Reinforcing plate
Claims (9)
る絶縁性透明フィルムと、この絶縁性透明フィルムの外
部接続部を除く上面に所定のパターンが印刷形成された
透明電極層と、この透明電極層上に所定のパターンが印
刷形成された発光体層と、この発光体層上に所定のパタ
ーンが印刷形成された誘電体層と、この誘電体層上に所
定のパターンが印刷形成された背面電極層と、この背面
電極層に一端が接続されるとともに他端が上記絶縁性透
明フィルムの外部接続部を構成するように所定パターン
が印刷形成された第一の集電電極と、一端が上記透明電
極層に接続されるとともに他端が上記絶縁性透明フィル
ムの外部接続部を構成するように所定パターンが印刷形
成された第二の集電電極と、上記外部接続部の先端を除
く全面上部にこれらを覆うように印刷形成された絶縁コ
ート層からなるＥＬランプ。1. An insulating transparent film as a base material including an external connecting portion, and a transparent electrode layer having a predetermined pattern printed on the upper surface of the insulating transparent film excluding the external connecting portion. A light emitting layer having a predetermined pattern printed on the transparent electrode layer, a dielectric layer having a predetermined pattern printed on the light emitting layer, and a predetermined pattern printed on the dielectric layer. A back electrode layer, and a first current collecting electrode having a predetermined pattern printed and formed so that one end is connected to the back electrode layer and the other end constitutes an external connection portion of the insulating transparent film, A second current collecting electrode having a predetermined pattern formed by printing so that one end is connected to the transparent electrode layer and the other end constitutes an external connection part of the insulating transparent film, and the tip of the external connection part is Except for these on the upper surface EL lamp comprising an insulating coat layer formed by printing so as to cover the.
性粉末を絶縁性樹脂中または絶縁性樹脂を溶解した樹脂
溶液中に分散させたペーストをパターン印刷形成したも
のであり、可視光透過性を有する導電性粉末が酸化イン
ジュウムスズ粉末であり、分散させる絶縁性樹脂が光硬
化性または加熱硬化性を有するものである請求項１記載
のＥＬランプ。2. A transparent electrode layer is formed by pattern-printing a paste in which a conductive powder having visible light transparency is dispersed in an insulating resin or a resin solution in which the insulating resin is dissolved. 2. The EL lamp according to claim 1, wherein the conductive powder having a property is indium tin oxide powder, and the insulating resin to be dispersed has a photo-curing property or a heat-curing property.
末の形状が針状粉（Ａ）と微粒子粉（Ｂ）よりなり、
（Ａ）：（Ｂ）の重量比率が１００：０〜２０：８０の
範囲であり、かつ全導電性粉末（Ｃ）と分散させる絶縁
性樹脂（Ｄ）の重量比率が（Ｃ）：（Ｄ）＝４５：５５
〜９５：５である請求項２記載のＥＬランプ。3. The indium oxide powder as a conductive powder has a shape of acicular powder (A) and fine particle powder (B),
The weight ratio of (A) :( B) is in the range of 100: 0 to 20:80, and the weight ratio of the total conductive powder (C) and the insulating resin (D) dispersed is (C) :( D ) = 45: 55
The EL lamp according to claim 2, wherein the EL lamp has a ratio of about 95: 5.
る絶縁性樹脂がアクリレート系光硬化性樹脂またはエポ
キシ樹脂、ウレタン変性エポキシ樹脂、エポキシ変性ポ
リエステル樹脂のいずれか１種または２種以上を含む加
熱硬化性樹脂である請求項２または３記載のＥＬラン
プ。4. The insulating resin in which the electrically conductive powder having a light-transmitting property is dispersed contains any one or more of an acrylate-based photocurable resin or an epoxy resin, a urethane-modified epoxy resin, and an epoxy-modified polyester resin. The EL lamp according to claim 2, which is a thermosetting resin.
の集電電極および絶縁性透明フィルム上に異方導電性接
着剤層を形成した請求項１〜４いずれか記載のＥＬラン
プ。5. The EL lamp according to claim 1, wherein an anisotropic conductive adhesive layer is formed on the first and second current collecting electrodes and the insulating transparent film at the tip of the external connection portion.
の先端部分のフィルム裏面に補強板を形成した請求項１
〜４いずれか記載のＥＬランプ。6. The reinforcing plate is formed on the back surface of the film at the tip of the external connection portion of the first and second current collecting electrodes.
The EL lamp according to any one of to 4.
可視光透過性を有するペーストを所定のパターンでスク
リーン印刷した後に光硬化または加熱硬化して透明電極
層を形成し、次いでこの透明電極層上に発光体ペースト
を所定のパターンでスクリーン印刷した後に加熱乾燥し
て発光体層を積層形成し、次いでこの発光体層上に誘電
体ペーストを所定のパターンでスクリーン印刷した後に
加熱乾燥して誘電体層を積層形成し、次いでこの誘電体
層上に導電性ペーストを所定のパターンでスクリーン印
刷した後に加熱乾燥して背面電極層を積層形成し、次い
で一端を前記透明電極層に接続するとともに他端が外部
接続電極部を構成するよう形成された第一のパターン
と、一端を前記背面電極層に接続するとともに他端が外
部接続電極部を構成するよう形成された第二のパターン
とを導電ペーストでスクリーン印刷した後に加熱乾燥し
て第一ならびに第二の集電電極を形成し、次いで前記外
部接続部の先端を除く全面上部にこれらを覆うように絶
縁ペーストをスクリーン印刷した後に光硬化または加熱
乾燥して絶縁コート層を積層形成する請求項１〜４いず
れか記載のＥＬランプの製造方法。7. A transparent electrode layer is formed by screen-printing a paste having visible light transparency on a top surface of an insulating transparent film as a base material in a predetermined pattern and then photo-curing or heat-curing the transparent electrode layer. The phosphor paste is screen-printed on the layer in a predetermined pattern and then dried by heating to form a laminated phosphor layer. Then, the dielectric paste is screen-printed on the phosphor layer in a predetermined pattern and then dried by heating. A dielectric layer is laminated, and then a conductive paste is screen-printed on the dielectric layer in a predetermined pattern and then dried by heating to form a back electrode layer. Then, one end is connected to the transparent electrode layer. A first pattern formed so that the other end forms an external connection electrode part, and one end connects to the back electrode layer and the other end forms an external connection electrode part The second pattern formed as described above is screen-printed with a conductive paste and then dried by heating to form the first and second current collecting electrodes, and then these are covered on the entire surface except the tip of the external connection portion. 5. The method of manufacturing an EL lamp according to claim 1, wherein the insulating paste is screen-printed as described above, and then the insulating coat layer is laminated by photo-curing or heat drying.
で一体形成する方法とした請求項７記載のＥＬランプの
製造方法。8. The method of manufacturing an EL lamp according to claim 7, wherein the back electrode layer and the collector electrode are integrally formed in a predetermined pattern.
方法とした請求項７記載のＥＬランプの製造方法。9. The method of manufacturing an EL lamp according to claim 7, wherein the collecting electrode is formed before forming the transparent electrode layer.
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7178499A JPH0935873A (en) | 1995-07-14 | 1995-07-14 | El lamp and manufacture thereof |
| EP99124542A EP0996313A3 (en) | 1995-07-14 | 1996-07-11 | Illuminated switch unit |
| EP97109902A EP0801517A3 (en) | 1995-07-14 | 1996-07-11 | Illuminated switch unit |
| DE69606806T DE69606806T2 (en) | 1995-07-14 | 1996-07-11 | Luminescent element, method for producing the same, and illuminated switching element with it |
| EP96305101A EP0753985B1 (en) | 1995-07-14 | 1996-07-11 | Electroluminescent lighting element, manufacturing method of the same, and an illuminated switch unit using the same |
| CNB96110810XA CN1138459C (en) | 1995-07-14 | 1996-07-12 | Electroluminescent lighting element, manufacturing method of the same, and illuminated switch unit using the same |
| US08/679,091 US5844362A (en) | 1995-07-14 | 1996-07-12 | Electroluminescent light element having a transparent electrode formed by a paste material which provides uniform illumination |
| US08/961,912 US6010742A (en) | 1995-07-14 | 1997-10-31 | Electroluminescent lighting element, manufacturing method of the same, and an illuminated switch unit using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7178499A JPH0935873A (en) | 1995-07-14 | 1995-07-14 | El lamp and manufacture thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0935873A true JPH0935873A (en) | 1997-02-07 |
Family
ID=16049536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7178499A Pending JPH0935873A (en) | 1995-07-14 | 1995-07-14 | El lamp and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0935873A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999046960A1 (en) * | 1998-03-13 | 1999-09-16 | Seiko Precision Inc. | El module |
| JP2001185366A (en) * | 1999-12-24 | 2001-07-06 | Teikoku Tsushin Kogyo Co Ltd | Electroluminescent sheet |
| JP2010245030A (en) * | 2009-03-18 | 2010-10-28 | Semiconductor Energy Lab Co Ltd | Lighting device |
| US8388871B2 (en) | 2006-04-07 | 2013-03-05 | Sumitomo Metal Mining Co., Ltd. | Translucent conductive film forming coating liquid, translucent conductive film, and dispersive type electroluminescent device |
| KR101288687B1 (en) * | 2004-08-27 | 2013-07-22 | 다이니폰 인사츠 가부시키가이샤 | Color Filter Substrate for Organic EL Element |
-
1995
- 1995-07-14 JP JP7178499A patent/JPH0935873A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999046960A1 (en) * | 1998-03-13 | 1999-09-16 | Seiko Precision Inc. | El module |
| JP2001185366A (en) * | 1999-12-24 | 2001-07-06 | Teikoku Tsushin Kogyo Co Ltd | Electroluminescent sheet |
| KR101288687B1 (en) * | 2004-08-27 | 2013-07-22 | 다이니폰 인사츠 가부시키가이샤 | Color Filter Substrate for Organic EL Element |
| US8388871B2 (en) | 2006-04-07 | 2013-03-05 | Sumitomo Metal Mining Co., Ltd. | Translucent conductive film forming coating liquid, translucent conductive film, and dispersive type electroluminescent device |
| JP2010245030A (en) * | 2009-03-18 | 2010-10-28 | Semiconductor Energy Lab Co Ltd | Lighting device |
| US9136492B2 (en) | 2009-03-18 | 2015-09-15 | Semiconductor Energy Laboratory Co., Ltd. | Lighting device with a connection structure and connecting member |
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