JPH02142092A - Dispersion type el element - Google Patents
Dispersion type el elementInfo
- Publication number
- JPH02142092A JPH02142092A JP63297434A JP29743488A JPH02142092A JP H02142092 A JPH02142092 A JP H02142092A JP 63297434 A JP63297434 A JP 63297434A JP 29743488 A JP29743488 A JP 29743488A JP H02142092 A JPH02142092 A JP H02142092A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- layer
- dielectric layer
- electrode
- cyanoethylated
- 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
- 239000006185 dispersion Substances 0.000 title claims description 16
- 239000011347 resin Substances 0.000 claims abstract description 62
- 229920005989 resin Polymers 0.000 claims abstract description 62
- 229920002678 cellulose Polymers 0.000 claims description 14
- 239000001913 cellulose Substances 0.000 claims description 14
- 239000004373 Pullulan Substances 0.000 claims description 6
- 229920001218 Pullulan Polymers 0.000 claims description 6
- 235000019423 pullulan Nutrition 0.000 claims description 6
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 3
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 3
- 239000004925 Acrylic resin Substances 0.000 claims description 2
- 229920000178 Acrylic resin Polymers 0.000 claims description 2
- 239000000020 Nitrocellulose Substances 0.000 claims description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 2
- 229920001220 nitrocellulos Polymers 0.000 claims description 2
- 125000000951 phenoxy group Chemical group [H]C1=C([H])C([H])=C(O*)C([H])=C1[H] 0.000 claims description 2
- 239000013034 phenoxy resin Substances 0.000 claims description 2
- 229920006287 phenoxy resin Polymers 0.000 claims description 2
- 239000003960 organic solvent Substances 0.000 abstract description 8
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 7
- 229920006267 polyester film Polymers 0.000 abstract description 7
- 238000001035 drying Methods 0.000 abstract description 6
- 239000000758 substrate Substances 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract 2
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 18
- 229910052782 aluminium Inorganic materials 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 239000011888 foil Substances 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 5
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 5
- 229910010272 inorganic material Inorganic materials 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 239000011147 inorganic material Substances 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 239000003973 paint Substances 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 3
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 description 3
- 229910002113 barium titanate Inorganic materials 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 2
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical class O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- HJOVHMDZYOCNQW-UHFFFAOYSA-N isophorone Chemical compound CC1=CC(=O)CC(C)(C)C1 HJOVHMDZYOCNQW-UHFFFAOYSA-N 0.000 description 2
- 239000005101 luminescent paint Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007738 vacuum evaporation Methods 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- GUBGYTABKSRVRQ-QRZGKKJRSA-N beta-cellobiose Chemical class OC[C@H]1O[C@@H](O[C@H]2[C@H](O)[C@@H](O)[C@H](O)O[C@@H]2CO)[C@H](O)[C@@H](O)[C@@H]1O GUBGYTABKSRVRQ-QRZGKKJRSA-N 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- NKZSPGSOXYXWQA-UHFFFAOYSA-N dioxido(oxo)titanium;lead(2+) Chemical compound [Pb+2].[O-][Ti]([O-])=O NKZSPGSOXYXWQA-UHFFFAOYSA-N 0.000 description 1
- 238000005566 electron beam evaporation Methods 0.000 description 1
- 238000001017 electron-beam sputter deposition Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- -1 etc. Inorganic materials 0.000 description 1
- 125000000816 ethylene group Chemical group [H]C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229940110676 inzo Drugs 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
Landscapes
- Electroluminescent Light Sources (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は分散型ＥＬ素子に関し、さらに詳しくは透明
電極と発光層との接着性および他方の電極と誘電層との
接着性が良好で、高温耐久性に優れた分散型ＥＬ素子に
関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a dispersion type EL device, and more specifically, it relates to a dispersion type EL device, and more specifically, a dispersion type EL device having good adhesion between a transparent electrode and a light emitting layer, and good adhesion between the other electrode and a dielectric layer. The present invention relates to a distributed EL element with excellent high-temperature durability.
一般に、分散型ＥＬ素子は、透明基板上に形成されたイ
ンジウム−スズ酸化物等からなる透明電極上に、蛍光体
を高誘電率結合剤樹脂中に分散した発光層と、チタン酸
バリウム等の高誘電率無機物を高誘電率結合剤樹脂中に
分散した誘電層とを順次に積層して形成し、誘電層上に
さらにＡｆｆ電極などの背面電極を設けて、これらを防
湿フィルムで封止してつくられている。（特開昭５９−
１９４３９４号、特開昭５６−６９７９６号、特開昭５
７−１３９１７１号、特開昭６１５１０９２号）
〔発明が解決しようとする課題〕
ところが、このようにしてつくられる分散型ＥＬ素子は
、発光層および誘電層中に蛍光体および高誘電率無機物
を多量に含有しているため、それぞれインジウム−スズ
酸化物等からなる透明電極およびＡｌ電極などの背面電
極との接着力が弱くて、発光層および誘電層の歪が大き
く、そのため、５０℃以上の高温中に放置すると、発光
層と透明電極との界面、および誘電層と背面電極との界
面で剥離するという問題があった。In general, a dispersion type EL element has a light-emitting layer made of phosphor dispersed in a high dielectric constant binder resin, and a light-emitting layer made of barium titanate or the like, on a transparent electrode made of indium-tin oxide or the like formed on a transparent substrate. A dielectric layer in which a high-permittivity inorganic material is dispersed in a high-permittivity binder resin is sequentially laminated, a back electrode such as an Aff electrode is further provided on the dielectric layer, and these are sealed with a moisture-proof film. It is made with (Unexamined Japanese Patent Publication No. 59-
No. 194394, JP-A-56-69796, JP-A-5
(No. 7-139171, Japanese Unexamined Patent Publication No. 6151092) [Problems to be Solved by the Invention] However, the dispersion type EL device produced in this way has a large amount of phosphor and high dielectric constant inorganic material in the light emitting layer and dielectric layer. Because of this, the adhesion to transparent electrodes made of indium-tin oxide and back electrodes such as Al electrodes is weak, resulting in large distortions of the light-emitting layer and dielectric layer. If left in the interior, there was a problem in that peeling occurred at the interface between the light emitting layer and the transparent electrode, and at the interface between the dielectric layer and the back electrode.
〔課題を解決するための手段］
この発明はかかる現状に鑑み種々検討を行った結果なさ
れたもので、分散型ＥＬ素子の透明電極と発光層との間
および他方の電極と誘電層との間の少なくとも一方に、
樹脂層を設けることによって、透明電極と発光層の接着
性、他方の電極と誘電層の接着性を改善するとともに、
発光層および誘電層の歪みを緩和して、発光層と透明電
極との界面、および他方の電極と誘電層との界面での剥
離を抑制し、高温耐久性を充分に向上させたものである
。[Means for Solving the Problems] The present invention has been made as a result of various studies in view of the current situation, and it has been made as a result of various studies in view of the current situation. to at least one of the
By providing a resin layer, the adhesiveness between the transparent electrode and the light emitting layer and the adhesiveness between the other electrode and the dielectric layer are improved, and
The distortion of the light-emitting layer and dielectric layer is relaxed to suppress peeling at the interface between the light-emitting layer and the transparent electrode and the interface between the other electrode and the dielectric layer, thereby sufficiently improving high-temperature durability. .
この発明において透明電極と発光層との間に形成される
樹脂層は、樹脂を有機溶剤に溶解した樹脂溶液を、透明
基板上に形成されたインジウム−スズ酸化物などからな
る透明電極上に塗布、乾燥して形成され、この上に蛍光
体を多量に含む発光層が積層して形成される。しかして
、透明電極と発光層はこの樹脂のみからなる樹脂層を介
して積層され、蛍光体を多量に含む発光層の歪みも樹脂
層でもって緩和されるため、透明電極と蛍光体を多量に
含む発光層との接着性が充分に向上され、たとえ５０゛
Ｃ以上の高温中に放置しても発光層が透明電極から剥離
せず、高温耐久性が充分に向上される。In this invention, the resin layer formed between the transparent electrode and the light emitting layer is formed by applying a resin solution prepared by dissolving the resin in an organic solvent onto the transparent electrode made of indium-tin oxide or the like formed on the transparent substrate. , is formed by drying, and a light emitting layer containing a large amount of phosphor is laminated thereon. The transparent electrode and the light-emitting layer are laminated via a resin layer made only of this resin, and the distortion of the light-emitting layer, which contains a large amount of phosphor, is alleviated by the resin layer. Adhesion with the light-emitting layer contained therein is sufficiently improved, and even if the light-emitting layer is left in a high temperature of 50°C or higher, the light-emitting layer does not peel off from the transparent electrode, and high-temperature durability is sufficiently improved.
また、他方の電極と誘電層との間に形成される樹脂層は
、樹脂を有機溶剤に溶解した樹脂溶液を、前記発光層上
に形成した高誘電率無機物を多量に含む誘電層上に塗布
、乾燥して形成され、この上にＡ２電極などの背面電極
が積層して形成される。しかして、背面電極と誘電層は
この樹脂のみからなる樹脂層を介して積層され、高誘電
率無機物を多量に含む誘電層の歪みも樹脂層でもって緩
和されるため、背面電極と高誘電率無機物を多量に含む
誘電層との接着性が充分に向上され、たとえ５０°Ｃ以
上の高温中に放置しても誘電層から背面電極が剥離せず
、高温耐久性が充分に向上されなお、このような樹脂層
は、透明電極と発光層との間および背面電極と誘電層と
の間の少なくとも一方に設ければ、透明電極と発光層と
の間または背面電極と誘電層との間の接着性が充分に向
上されて、高温耐久性が向上されるが、両方に設ければ
、透明電極と発光層との間および他方の電極と誘電層と
の間の両者の接着性が充分に向上されて、高温耐久性が
さらに一段と向上される。The resin layer formed between the other electrode and the dielectric layer is formed by applying a resin solution prepared by dissolving the resin in an organic solvent onto the dielectric layer containing a large amount of high dielectric constant inorganic material formed on the light emitting layer. , is formed by drying, and a back electrode such as an A2 electrode is laminated thereon. Therefore, the back electrode and the dielectric layer are laminated via a resin layer made only of this resin, and the strain on the dielectric layer containing a large amount of high-k inorganic material is alleviated by the resin layer. Adhesion with the dielectric layer containing a large amount of inorganic substances is sufficiently improved, the back electrode does not peel off from the dielectric layer even if left in a high temperature of 50°C or higher, and high-temperature durability is sufficiently improved. If such a resin layer is provided between the transparent electrode and the light emitting layer or between the back electrode and the dielectric layer, the resin layer can be provided between the transparent electrode and the light emitting layer or between the back electrode and the dielectric layer. Adhesion is sufficiently improved and high-temperature durability is improved, but if it is provided on both sides, the adhesion between the transparent electrode and the light emitting layer and between the other electrode and the dielectric layer will be sufficiently improved. As a result, the high temperature durability is further improved.
このような樹脂層に使用される樹脂としては、高誘電率
を有するシアノエチル化セロース、ヒドロキシシアノエ
チル化セルロース、シアノエチル化プルラン、シアノエ
チル化ポリビニルアルコール、シアノエチル化フェノキ
シ樹脂、シアノエチル化アクリル樹脂、ニトロセルロー
スなどが好ましく使用され、これらは単独で、または２
種以上併用して使用される。Resins used for such resin layers include cyanoethylated cellose, hydroxycyanoethylated cellulose, cyanoethylated pullulan, cyanoethylated polyvinyl alcohol, cyanoethylated phenoxy resin, cyanoethylated acrylic resin, and nitrocellulose, which have a high dielectric constant. These are preferably used alone or in combination with
Used in combination with more than one species.
また、これらの樹脂を溶解する有機溶剤としては、ジメ
チルホルムアミド、ノルマルメチル２−ピロリドン、ジ
メチルスルホキシド、イソホロン、アセトン、メチルエ
チルケトンなど、使用する樹脂を溶解可能な有機溶剤が
特に限定されることなく使用される。Furthermore, as the organic solvent for dissolving these resins, organic solvents that can dissolve the resins used may be used without particular limitation, such as dimethylformamide, normal methyl 2-pyrrolidone, dimethyl sulfoxide, isophorone, acetone, and methyl ethyl ketone. Ru.
このような樹脂からなる樹脂層の厚さは、透明電極と発
光層との間に形成する場合、０．１μｍより薄くすると
所期の効果が得られず、また１０μｍより厚くすると、
このような樹脂層を形成して得られる分散型ＥＬ素子の
輝度が低下するため、０．１＝ Ｉ Ｏｐ ｍの範囲内
にするのが好ましい。また、背面電極と誘電層との間に
形成する場合も、０．１μｍより薄くすると所期の効果
が得られず、１０μｍより厚くすると、このような樹脂
層を形成して得られる分散型ＥＬ素子の輝度が低下する
ため、０．１〜１０μｍの範囲内にするのが好ましい。When the thickness of the resin layer made of such resin is formed between the transparent electrode and the light emitting layer, if it is thinner than 0.1 μm, the desired effect will not be obtained, and if it is thicker than 10 μm,
Since the brightness of the dispersion type EL element obtained by forming such a resin layer decreases, it is preferable to set it within the range of 0.1=I Op m. Also, when forming the layer between the back electrode and the dielectric layer, if the thickness is less than 0.1 μm, the desired effect cannot be obtained, and if it is thicker than 10 μm, the dispersion type EL obtained by forming such a resin layer will not be obtained. Since the brightness of the element decreases, it is preferable that the thickness be within the range of 0.1 to 10 μm.
ここで、透明電極は、従来の分散型ＥＬ素子の透明電極
と同様にして形成され、たとえば、インジウム−スズ酸
化物、Ｉｎｚ ０３．５ｎＯｚなどからなる厚さが０．
０５〜１μｍの透明電極が、電子ビーム蒸着法やスパッ
タリング法によって形成される。Here, the transparent electrode is formed in the same manner as the transparent electrode of a conventional dispersion type EL element, and is made of, for example, indium-tin oxide, Inz 03.5nOz, etc., and has a thickness of 0.5nm.
A transparent electrode with a thickness of 0.05 to 1 μm is formed by electron beam evaporation or sputtering.
また、発光層は、ＺｎＳ、ＣｄＳなどからなる母材にＣ
ｕ、ＣＩ、Ｍｎ、Ａ Ｌ Ａｇなどの１種または２種以
上の元素を発光中心として付活した蛍光体を、シアノエ
チル化セルロース、シアノエチル化プルラン、シアノエ
チル化サッカロース等の高誘電率結合剤樹脂、およびジ
メチルホルムアミド、ノルマルメチル２−ピロリドン等
のを機溶剤とともに混合分散して発光塗料を調製し、こ
れを樹脂層上に乾燥厚が５０〜１００μｍとなるように
塗布、乾燥して形成される。In addition, the light-emitting layer is made of a base material made of ZnS, CdS, etc.
A phosphor activated with one or more elements such as u, CI, Mn, and AL Ag as a luminescent center is combined with a high dielectric constant binder resin such as cyanoethylated cellulose, cyanoethylated pullulan, and cyanoethylated saccharose. A luminescent paint is prepared by mixing and dispersing dimethylformamide, normal methyl 2-pyrrolidone, etc. together with a organic solvent, and this is applied onto a resin layer to a dry thickness of 50 to 100 μm and dried.
さらに、誘電層は、チタン酸バリウム、チタン酸鉛、二
酸化チタンなどの高誘電率無機化合物を、シアノエチル
化セルロース、シアノエチル化プルラン、シアノエチル
化サッカロース等の高誘電１合剤樹脂、およびジメチル
ホルムアミド、ノルマルメチル２−ピロリドン等の有機
溶剤とともに混合分散して誘電塗料を調製し、これを発
光層上に乾燥厚が１０〜１００μｍとなるように塗布、
乾燥して形成される。なお、誘電層は、この他、誘電塗
料をアルミ消電掻上に塗布、乾燥して形成してもよく、
この場合はこの誘電層を形成したアルミ箔電極を、発光
層を形成した透明電極と対向させ、加圧接着して分散型
ＥＬ素子が形成される。Furthermore, the dielectric layer is made of a high dielectric constant inorganic compound such as barium titanate, lead titanate, titanium dioxide, etc., a high dielectric mixture resin such as cyanoethylated cellulose, cyanoethylated pullulan, cyanoethylated saccharose, and dimethylformamide, n. A dielectric paint is prepared by mixing and dispersing it with an organic solvent such as methyl 2-pyrrolidone, and this is applied onto the luminescent layer to a dry thickness of 10 to 100 μm.
Formed by drying. In addition, the dielectric layer may also be formed by applying a dielectric paint onto an aluminum dissipating coating and drying it.
In this case, the aluminum foil electrode on which the dielectric layer is formed is opposed to the transparent electrode on which the light emitting layer is formed, and is bonded under pressure to form a distributed EL element.
背面電極は、従来の分散型ＥＬ素子の背面電極と同様に
して形成され、たとえば、ＡＩ、Ａｕ、Ｍｏ、Ｃｒ等の
金属電極、さらにＩｎｚＯ，、，５ｎＯｔなどの金属酸
化物電極が、真空蒸着法や抵抗加熱法によって形成され
る。また、この他、前記したようにアルミ箔、ニッケル
箔、ステンレス箔等を背面電極とし、この上に誘電層を
形成してもよい。The back electrode is formed in the same manner as the back electrode of conventional distributed EL elements, and for example, metal electrodes such as AI, Au, Mo, Cr, etc., and metal oxide electrodes such as InzO, , 5nOt, etc. are formed by vacuum evaporation. It is formed by a heating method or a resistance heating method. In addition, as described above, aluminum foil, nickel foil, stainless steel foil, etc. may be used as the back electrode, and a dielectric layer may be formed thereon.
次に、この発明の実施例について説明′４る。 Next, embodiments of the present invention will be explained.
実施例１
厚さ５０μｍのポリエステルフィルＡＪ：Ｍ、基板温度
１００°Ｃの条件下で、真空蒸着法により厚さが０．２
μｍのＩＴＯ（インジウム−スズ酸化物）からなる透明
電極を形成し、さらにこの上に、シアノエチル化セルロ
ース１０重量部とジメチルホルムアミド１００重量部か
らなる樹脂塗料を、塗布、乾燥して、厚さが３μｍの樹
脂層を形成した。Example 1 A polyester film AJ:M with a thickness of 50 μm was formed with a thickness of 0.2 μm by vacuum evaporation under the condition of a substrate temperature of 100°C.
A transparent electrode made of μm thick ITO (indium-tin oxide) is formed, and then a resin paint made of 10 parts by weight of cyanoethylated cellulose and 100 parts by weight of dimethylformamide is applied and dried to reduce the thickness. A resin layer of 3 μm was formed.
次いで、この樹脂層上に、ＺｎＳ：Ｃｕ、Ｃ１からなる
蛍光体３０重量部を、シアノエチル化セルロース１０重
量部およびジメチルホルムアミド１００重量部とともに
混合分散して調製した発光塗料を、塗布、乾燥して厚さ
が６０μｍの発光層を形成した。Next, on this resin layer, a luminescent paint prepared by mixing and dispersing 30 parts by weight of a phosphor consisting of ZnS:Cu, C1 with 10 parts by weight of cyanoethylated cellulose and 100 parts by weight of dimethylformamide was applied and dried. A light emitting layer having a thickness of 60 μm was formed.
一方、厚さ５０μｍのアルミ箔上に、シアノエチル化セ
ルロース１０重量部とジメチルボルムアミド１００重量
部からなる樹脂塗料を塗布、乾燥して、厚さが３μｍの
樹脂層を形成し、さらにこの上に、チタン酸バリウム５
０重量部と、シアノエチル化セルロース１０重量部と、
ジメチルホルムアミド１００重量部とを混合分散して調
製した誘電塗料を、塗布、乾燥して厚さが２０μｍの誘
電層を形成した。On the other hand, a resin paint consisting of 10 parts by weight of cyanoethylated cellulose and 100 parts by weight of dimethylborumamide was applied onto aluminum foil with a thickness of 50 μm, and dried to form a resin layer with a thickness of 3 μm. , barium titanate 5
0 parts by weight, and 10 parts by weight of cyanoethylated cellulose.
A dielectric coating prepared by mixing and dispersing 100 parts by weight of dimethylformamide was applied and dried to form a dielectric layer having a thickness of 20 μm.
次に、樹脂層および発光層を積層形成したポリエステル
フィルムと、樹脂層および誘電層を形成したアルミ箔と
を、発光層と誘電層とが接するように対向させて、５
ｋｇ／ｃ＋ｊ、 １２０°Ｃの条件で５分間加圧接着
させた後、これを５０ｍｍＸ５０ｍｍの大きさに切断し
た。Next, the polyester film on which the resin layer and the light-emitting layer were laminated and the aluminum foil on which the resin layer and the dielectric layer were formed were placed facing each other so that the light-emitting layer and the dielectric layer were in contact with each other.
After adhering under pressure for 5 minutes at 120°C and kg/c+j, this was cut into a size of 50mm x 50mm.
次いで、これよりも１０皿大きいサイズの３フツ化塩化
エチレンフイルムで挟み込んで、エツジ部を加熱加圧し
て接着させ、第１図に示すような、ポリエステルフィル
ムｉｆに、透明電極２、樹脂層３、発光層４、誘電層５
、樹脂層６、アルミ箔からなる背面電極７を順次積層し
、Ｅ下の３フツ化塩化エチレンフイルム８および９で挟
み込んで封止した分散型ＥＬ素子Ａをつくった。Next, the polyester film if is sandwiched with a trifluorochloride ethylene film 10 sheets larger in size and the edges are bonded by heating and pressing, and the transparent electrode 2 and the resin layer 3 are attached to the polyester film if as shown in FIG. , light emitting layer 4, dielectric layer 5
, a resin layer 6, and a back electrode 7 made of aluminum foil were sequentially laminated and sandwiched between trifluorochlorinated ethylene films 8 and 9 under E to produce a dispersed EL element A.
実施例２〜２０
実施例１において、透明電極２と発光層４間の樹脂層３
、および誘電層５とアルミ箔からなる前面電極７間の樹
脂層６の何れか一方の樹脂層の形成を省くか、それぞれ
の樹脂層の厚さを下記第１表に示すように種々変更した
以外は、実施例１と同様にして分散型ＥＬ素子Ａをつく
った。Examples 2 to 20 In Example 1, the resin layer 3 between the transparent electrode 2 and the light emitting layer 4
, and the resin layer 6 between the dielectric layer 5 and the front electrode 7 made of aluminum foil, the formation of one of the resin layers was omitted, or the thickness of each resin layer was variously changed as shown in Table 1 below. Dispersed EL element A was produced in the same manner as in Example 1 except for this.
第１表
実施例２１
実施例１における樹脂層３および６の形成において、シ
アノエチル化セルロースに代えて、シアノエチル化プル
ランを同量使用した以外は、実施例１と同様にして樹脂
層３および６を形成し、分散型ＥＬ素子Ａをつくった。Table 1 Example 21 Resin layers 3 and 6 were formed in the same manner as in Example 1, except that the same amount of cyanoethylated pullulan was used instead of cyanoethylated cellulose in forming resin layers 3 and 6 in Example 1. A dispersion type EL element A was produced.
実施例２２
実施例１における樹脂層３および６の形成において、シ
アノエチル化セルロースに代えてヒドロキシシアノエチ
ル化セルロースを同量使用した以外は、実施例１と同様
にして樹脂層３および６を形成し、分散型ＥＬ素子Ａを
つくった。Example 22 Resin layers 3 and 6 were formed in the same manner as in Example 1, except that the same amount of hydroxycyanoethylated cellulose was used in place of cyanoethylated cellulose in the formation of resin layers 3 and 6 in Example 1, A distributed EL element A was created.
実施例２３
実施例１における樹脂層３および６の形成において、シ
アノエチル化セルロースに代えてシアノエチル化ポリビ
ニルアルコールを同量使用した以外は、実施例１と同様
にして樹脂層３および６を形成し、分散型ＥＬ素子Ａを
つくった。Example 23 Resin layers 3 and 6 were formed in the same manner as in Example 1, except that the same amount of cyanoethylated polyvinyl alcohol was used instead of cyanoethylated cellulose in the formation of resin layers 3 and 6 in Example 1, A distributed EL element A was created.
実施例２４
実施例１における発光Ｎ３および誘電層５の形成におい
て、シアノエチル化セルロースに代えてシアノエチル化
プルランを同量使用した以外は、実施例１と同様にして
発光層３および誘電層５を形成し、分散型ＥＬ素子Ａを
つくった。Example 24 A light emitting layer 3 and a dielectric layer 5 were formed in the same manner as in Example 1, except that the same amount of cyanoethylated pullulan was used in place of cyanoethylated cellulose in forming the light emitting layer N3 and dielectric layer 5 in Example 1. Then, a distributed EL element A was created.
比較例１
実施例１において、樹脂層３および６の形成を省いた以
外は、実施例１と同様にして分散型ＥＬ素子をつくった
。Comparative Example 1 A dispersion type EL element was produced in the same manner as in Example 1, except that the formation of resin layers 3 and 6 was omitted.
比較例２
実施例２４において、樹脂層３および６の形成を省いた
以外は、実施例２４と同様にして分散型ＥＬ素子をつく
った。Comparative Example 2 A dispersion type EL element was produced in the same manner as in Example 24, except that the formation of resin layers 3 and 6 was omitted.
各実施例および比較例で得られた分散型ＥＬ素子の透明
電極２と背面電極７を交流電源１０に接続し、１００■
、４００Ｈｚの正弦波で、２０°Ｃ１６０％ＲＨの条件
下に駆動させて、初期の輝度を測定し、次に、１００■
、４００Ｈｚの正弦波で７０°Ｃの乾燥雰囲気下で駆動
し、剥離が発生するまでの時間を測定した。The transparent electrode 2 and back electrode 7 of the distributed EL device obtained in each example and comparative example were connected to an AC power source 10, and
, 400Hz sine wave, 20°C, 160%RH, and the initial brightness was measured.
, and a 400 Hz sine wave in a dry atmosphere at 70° C., and the time until peeling occurred was measured.
下記第２表はその結果である。Table 2 below shows the results.
第２表
第２表から明らかなように、この発明で得られた分散型
ＥＬ素子（実施例工ないし２４）は、いずれも従来の分
散型ＥＬ素子（比較例１および２）に比し、初期の輝度
が同等で剥離時間が長く、このことからこの発明の分散
型ＥＬ素子では、透明電極と発光層および他方の電極と
誘電層との接着性が良好で、高温耐久性が充分に向上さ
れていることがわかる。Table 2 As is clear from Table 2, the dispersion type EL devices obtained by the present invention (Examples No. 2 to 24) were all compared to the conventional dispersion type EL devices (Comparative Examples 1 and 2). The initial brightness is the same and the peeling time is long. Therefore, the dispersion type EL device of the present invention has good adhesion between the transparent electrode and the light emitting layer, and between the other electrode and the dielectric layer, and has sufficiently improved high temperature durability. I can see that it is being done.
第１図はこの発明の分散型ＥＬ素子の一実施例を示す断
面図である。
■・・・ポリエステルフィルム、２・・・透明電極、３
・・・樹脂層、４・・・発光層、５・・・誘電層、６・
・・樹脂層、７・・・背面電極（他方の電極）、Ａ・・
・分散型ＥＬ素子
特許出願人 日立マクセル株式会社
・左ｊｊ、 ′ｉ″１
１ポリエステルフイルムFIG. 1 is a cross-sectional view showing an embodiment of the distributed EL element of the present invention. ■...Polyester film, 2...Transparent electrode, 3
...Resin layer, 4...Light emitting layer, 5...Dielectric layer, 6...
... Resin layer, 7... Back electrode (other electrode), A...
・Distributed EL device patent applicant Hitachi Maxell, Ltd. ・Left jj, 'i''1 1 Polyester film
Claims (2)
、発光層および誘電層を設けた分散型ＥＬ素子において
、透明電極と発光層との間および他方の電極と誘電層と
の間の少なくとも一方に樹脂層を設けたことを特徴とす
る分散型ＥＬ素子。1. In a distributed EL element in which a light emitting layer and a dielectric layer are provided between a pair of electrodes, at least one of which is a transparent electrode, a resin is provided between at least one of the transparent electrode and the light emitting layer and between the other electrode and the dielectric layer. A distributed EL element characterized by having layers.
シアノエチル化セルロース、シアノエチル化プルラン、
シアノエチル化ポリビニルアルコール、シアノエチル化
フェノキシ樹脂、シアノエチル化アクリル樹脂、ニトロ
セルロースから選ばれる少なくとも１以上の樹脂からな
る樹脂層である請求項１記載の分散型ＥＬ素子。2. The resin layer contains cyanoethylated cellulose, hydroxycyanoethylated cellulose, cyanoethylated pullulan,
2. The dispersion type EL device according to claim 1, wherein the resin layer is made of at least one resin selected from cyanoethylated polyvinyl alcohol, cyanoethylated phenoxy resin, cyanoethylated acrylic resin, and nitrocellulose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63297434A JPH02142092A (en) | 1988-11-24 | 1988-11-24 | Dispersion type el element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63297434A JPH02142092A (en) | 1988-11-24 | 1988-11-24 | Dispersion type el element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02142092A true JPH02142092A (en) | 1990-05-31 |
Family
ID=17846470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63297434A Pending JPH02142092A (en) | 1988-11-24 | 1988-11-24 | Dispersion type el element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02142092A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0436993A (en) * | 1990-05-31 | 1992-02-06 | Nippon Seiki Co Ltd | Dispersion type electroluminescence element |
| KR100378922B1 (en) * | 2000-07-22 | 2003-04-08 | 주식회사 휴먼앤싸이언스 | Method for making electroluminescent dispay Plastic |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01213992A (en) * | 1988-02-23 | 1989-08-28 | Sumitomo Bakelite Co Ltd | Transparent electrically conductive film |
-
1988
- 1988-11-24 JP JP63297434A patent/JPH02142092A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01213992A (en) * | 1988-02-23 | 1989-08-28 | Sumitomo Bakelite Co Ltd | Transparent electrically conductive film |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0436993A (en) * | 1990-05-31 | 1992-02-06 | Nippon Seiki Co Ltd | Dispersion type electroluminescence element |
| KR100378922B1 (en) * | 2000-07-22 | 2003-04-08 | 주식회사 휴먼앤싸이언스 | Method for making electroluminescent dispay Plastic |
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