JPH02223192A - Dispersion-type el device and its manufacture - Google Patents
Dispersion-type el device and its manufactureInfo
- Publication number
- JPH02223192A JPH02223192A JP1043625A JP4362589A JPH02223192A JP H02223192 A JPH02223192 A JP H02223192A JP 1043625 A JP1043625 A JP 1043625A JP 4362589 A JP4362589 A JP 4362589A JP H02223192 A JPH02223192 A JP H02223192A
- Authority
- JP
- Japan
- Prior art keywords
- emitting layer
- luminescent
- light emitting
- type
- luminescent layer
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 18
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000011230 binding agent Substances 0.000 claims abstract description 10
- 229920005989 resin Polymers 0.000 claims abstract description 10
- 239000011347 resin Substances 0.000 claims abstract description 10
- 239000003960 organic solvent Substances 0.000 claims abstract description 8
- 239000006185 dispersion Substances 0.000 claims description 8
- 239000003973 paint Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 239000005101 luminescent paint Substances 0.000 abstract description 18
- 239000011521 glass Substances 0.000 abstract description 7
- 238000002156 mixing Methods 0.000 abstract description 6
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- 239000003822 epoxy resin Substances 0.000 abstract description 4
- 239000006260 foam Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 229920000647 polyepoxide Polymers 0.000 abstract description 4
- 239000000565 sealant Substances 0.000 abstract description 4
- 229910052782 aluminium Inorganic materials 0.000 abstract description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 3
- 238000002360 preparation method Methods 0.000 abstract description 3
- 239000000758 substrate Substances 0.000 abstract 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 6
- 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
- 230000000052 comparative effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 3
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 230000002401 inhibitory effect 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
- 239000000463 material Substances 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- CHDVXKLFZBWKEN-UHFFFAOYSA-N C=C.F.F.F.Cl Chemical compound C=C.F.F.F.Cl CHDVXKLFZBWKEN-UHFFFAOYSA-N 0.000 description 1
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 1
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 1
- RVGRUAULSDPKGF-UHFFFAOYSA-N Poloxamer Chemical compound C1CO1.CC1CO1 RVGRUAULSDPKGF-UHFFFAOYSA-N 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 239000004373 Pullulan Substances 0.000 description 1
- 229920001218 Pullulan Polymers 0.000 description 1
- 229910006853 SnOz Inorganic materials 0.000 description 1
- UHYPYGJEEGLRJD-UHFFFAOYSA-N cadmium(2+);selenium(2-) Chemical compound [Se-2].[Cd+2] UHYPYGJEEGLRJD-UHFFFAOYSA-N 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 238000005566 electron beam evaporation Methods 0.000 description 1
- 238000001017 electron-beam sputter deposition Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229940110676 inzo Drugs 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 125000000951 phenoxy group Chemical group [H]C1=C([H])C([H])=C(O*)C([H])=C1[H] 0.000 description 1
- 239000013034 phenoxy resin Substances 0.000 description 1
- 229920006287 phenoxy resin Polymers 0.000 description 1
- 229920001281 polyalkylene Polymers 0.000 description 1
- 229920001515 polyalkylene glycol Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 235000019423 pullulan Nutrition 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 150000003445 sucroses Chemical class 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
Landscapes
- Electroluminescent Light Sources (AREA)
- Luminescent Compositions (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素子およびその製造方法に関し、
さらに詳しくは、長寿命で耐久性に優れた高輝度の分散
型ＥＬ素子とその製造方法に関す〔従来の技術〕
一般に、分散型ＥＬ素子における発光層は、高誘電率結
合剤樹脂を有機溶剤に熔解し、これに蛍光体を均一に混
合分散して発光塗料を調製した後、この発光塗料を２０
０メツシュ程度のスクリーンを用いて透明電極等の上に
塗布、乾燥して形成される。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a distributed EL device and a method for manufacturing the same.
More specifically, it relates to a long-life, durable, high-brightness dispersion type EL element and its manufacturing method [Prior art] In general, the light-emitting layer in a dispersion type EL element is made by using a high dielectric constant binder resin in an organic solvent. After preparing a luminescent paint by uniformly mixing and dispersing the phosphor into this, the luminescent paint was
It is formed by applying it onto a transparent electrode, etc. using a screen of about 0 mesh and drying it.
〔発明が解決しようとする課題］
ところが、このようにして形成される発光層は、発光塗
料を調製する際の蛍光体の混合分子ｌ′ｆ、時、あるい
はスクリーンを用いた発光塗料の塗布時に空気を抱き込
んで気泡が生じ、発光層形成後も発光層中に気泡が残る
ため、発光層中に気泡がないものに比し、同電圧で駆動
する場合、流れる電流が小さくなって低い輝度しか得ら
れず、同じ杯度を得ようとすると高電圧が必要となり、
寿命が短くなって充分な耐久性が得られない。[Problems to be Solved by the Invention] However, the luminescent layer formed in this way does not contain the phosphor mixture molecules l'f when preparing the luminescent paint, or when applying the luminescent paint using a screen. Bubbles are created by entrapping air, and the bubbles remain in the luminescent layer even after the luminescent layer is formed, so when driven at the same voltage, the current that flows is smaller and the brightness is lower than when there are no bubbles in the luminescent layer. If you try to get the same degree of power, you will need a high voltage,
The lifespan is shortened and sufficient durability cannot be obtained.
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素子の発光層の形成に際し、蛍
光体を高誘電率結合剤樹脂および有機溶剤とともに混合
分ｎＪ１．させた中にさらに消泡剤を添加して発光塗料
を調製し、この発光塗料を用いて発光層を形成すること
ことによって、蛍光体の混合分散時、あるいはスクリー
ンを用いた発光塗料の塗布時に空気を抱き込んで形成さ
れる気泡の発生を抑制し、発光層中に気泡が残らないよ
うにして、分散型ＥＬ素子の輝度を低下させることなく
、寿命を長くして耐久性を充分に向上させたものである
。This invention was made as a result of various studies in view of the current situation, and when forming a light emitting layer of a dispersion type EL element, a phosphor is mixed with a high dielectric constant binder resin and an organic solvent in a proportion of nJ1. By adding an antifoaming agent to the solution and preparing a luminescent paint, this luminescent paint is used to form a luminescent layer, which can be used when mixing and dispersing phosphors or when applying luminescent paint using a screen. Suppresses the generation of air bubbles that are formed by trapping air, and prevents air bubbles from remaining in the light emitting layer, thereby extending the lifespan and sufficiently improving durability without reducing the brightness of the dispersed EL element. This is what I did.
この発明において、発光塗料調製時に添加される消泡剤
としては、シリコーン消泡剤、ポリアルキレン系消泡剤
など、一般に使用される消泡剤がいずれも好適なものと
して使用され、市販品の具体例としては、たとえば、信
越化学工業社製、Ｋ３６６、Ｗｙａｎｄｏｔｔ Ｃｈｅ
ｍ、社製、プルロー’−ツクＬ−６１などが挙げられる
。In this invention, as the antifoaming agent added during the preparation of the luminescent paint, any commonly used antifoaming agents such as silicone antifoaming agents and polyalkylene antifoaming agents are suitably used. Specific examples include K366, Wyandott Che, manufactured by Shin-Etsu Chemical Co., Ltd.
Examples include Pururo'-Tsuku L-61 manufactured by M, Ltd., and the like.
これらの消泡剤は抑泡作用および破泡作用に優れ、気泡
を取り除くのに優れた効果を存する。しかして、これら
の消泡剤が、発光塗料調製時に添加されると、これらの
消泡剤の抑泡作用および破泡作用によって、蛍光体の混
合分散時、あるいはスクリーンを用いた発光塗料の塗布
時に空気を抱き込んで形成される気泡の発生が抑制され
、発光層中に気泡が残ることもない。従って、これらの
消泡剤を添加した発光塗料を用いて形成された発光層は
、発光効率が向上し、分散型ＥＬ素子の輝度が低下され
ることもなく、寿命が長くなり耐久性が充分に向上され
る。These antifoaming agents have excellent foam-inhibiting and foam-breaking effects, and are effective in removing air bubbles. However, when these antifoaming agents are added during the preparation of luminescent paints, their foam-inhibiting and foam-breaking effects make it difficult to mix and disperse the phosphor or apply the luminescent paint using a screen. The generation of bubbles that are sometimes formed by entrapping air is suppressed, and no bubbles remain in the light emitting layer. Therefore, a light-emitting layer formed using a light-emitting paint containing these antifoaming agents has improved luminous efficiency, does not reduce the brightness of the dispersed EL element, has a longer lifespan, and has sufficient durability. will be improved.
このように、発光塗料調製時に添加される消泡剤の使用
量は、蛍光体の混合分＋Ｉｋ時、あるいはスクリーンを
用いた発光塗料の塗布時に、空気を抱き込んで形成され
る気泡の発生を充分に抑制させるため、蛍光体、高誘電
率結合剤樹脂および有機溶剤等からなる発光塗料全量に
対して０．００１〜５重■％の範囲内にするのが好まし
く、５重■％以上含有させると誘電率が低下し、輝度低
下を招いてしまう。In this way, the amount of antifoaming agent added when preparing the luminescent paint is determined by the amount of phosphor mixed + Ik, or when applying the luminescent paint using a screen, to prevent the generation of air bubbles that are formed by entrapping air. In order to sufficiently suppress the amount, it is preferably within the range of 0.001 to 5% by weight, and the content is 5% or more by weight based on the total amount of the luminescent paint consisting of the phosphor, high dielectric constant binder resin, organic solvent, etc. If this happens, the dielectric constant will decrease, leading to a decrease in brightness.
また、発光層に使用される高誘電率結合剤樹脂としでは
、一般に分散型ＥＬ素子の発光層に使用される高誘電率
結合剤樹脂がいずれも好適に使用され、たとえば、シア
ノエチル化セルロース、シアンエチル化プルラン、シア
ノエチル化ポリビニルアルコール、シアノエチル化ヒド
ロキシセルロース、シアノエチル化サッカロース、シア
ノエチル化フェノキシ樹脂などが好ましく使用される。Furthermore, as the high-permittivity binder resin used in the light-emitting layer, any high-permittivity binder resin generally used in the light-emitting layer of a dispersed EL element is suitably used, such as cyanoethylated cellulose, cyanide Ethylated pullulan, cyanoethylated polyvinyl alcohol, cyanoethylated hydroxycellulose, cyanoethylated sucrose, cyanoethylated phenoxy resin, and the like are preferably used.
さらに、発光層で使用される蛍光体としては、たとえば
、ＺｎＳ、Ｚｎ５ｅ、ＺｎＳＳｅ、ＣｄＳ、ＣｄＳｅ、
Ｃｄ５Ｓｅなどからなる母材に、Ｃｕ、ＣＩ、Ｂｒ、Ｍ
ｎ、ＡＩ、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ものが好適なものとして使用される
。Furthermore, examples of phosphors used in the light emitting layer include ZnS, Zn5e, ZnSSe, CdS, CdSe,
Cu, CI, Br, M are added to the base material made of Cd5Se etc.
Those activated with one or more elements such as n, AI, and Ag as luminescent centers are preferably used.
また、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、通常、
分散型ＥＬ素子の発光層に使用されるものがいずれも使
用される。In addition, examples of organic solvents include dimethylformamide, normal methyl 2-pyrrolidone, dimethyl sulfoxide, isophorone, acetone, methyl ethyl ketone, etc.
Any material used in the light emitting layer of a distributed EL device can be used.
このように、消泡剤を、蛍光体、高誘電率結合剤樹脂お
よび有機溶剤等とともに混合分散して調製した発光塗料
を用いて発光層を形成する分１１に型ＥＬ素子の形成は
、たとえば、第１図に示すように透明導電性ガラス仮ｌ
上のインジウム−スズ酸化物などからなる透明電極２上
に、前記の消泡剤、蛍光体、高誘電率結合剤樹脂および
有機溶剤等を混合分１１にシて調製された発光塗料を塗
布、乾燥して発光層３を形成し、次いで、この発光層３
上にナルミニラム等からなる背面型ｆｆ１４を形成し、
これらをガラス板５とエポキシ樹脂などからなる封止剤
６で封止して行われる。そして、第１図に示すような分
散型ＥＬ素子Ａが形成される。なお、７は交流電源で、
分散型ＥＬ素子Ａは、透明電極２と背面電極４が交流電
源７に接続されて駆動される。As described above, the formation of a 11-type EL element in which a light-emitting layer is formed using a light-emitting paint prepared by mixing and dispersing an antifoaming agent with a phosphor, a high dielectric binder resin, an organic solvent, etc., is performed, for example. , transparent conductive glass temporary l as shown in Fig. 1
On the transparent electrode 2 made of indium-tin oxide, etc., apply a luminescent paint prepared by mixing 11 of the above antifoaming agent, phosphor, high dielectric constant binder resin, organic solvent, etc., The light emitting layer 3 is formed by drying, and then this light emitting layer 3 is
A back type ff14 made of Narminiram etc. is formed on the top,
This is done by sealing these with a glass plate 5 and a sealant 6 made of epoxy resin or the like. Then, a distributed EL element A as shown in FIG. 1 is formed. In addition, 7 is an AC power supply,
The distributed EL element A is driven by connecting the transparent electrode 2 and the back electrode 4 to an AC power source 7.
ここで、透明電極２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、例えば、インジウム−スズ酸
化物、Ｉ ｎｚ Ｏ＊ 、Ｓ ｎ Ｏｚ 、ＡＵなどか
らなる透明電極２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 2 is formed in the same manner as the transparent electrode of a conventional dispersion type EL element, and for example, the transparent electrode 2 made of indium-tin oxide, InzO*, SnOz, AU, etc. It is formed by electron beam evaporation or sputtering.
また、発光層３上に形成される背面＊５４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Ｉ
ｎｚ Ｏｓ 、Ｓｎｏｗ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、またＡＩ箔など
を加熱圧着するなどの方法でも形成される。In addition, the back surface *54 formed on the light emitting layer 3 is formed in the same manner as the back electrode of a conventional dispersion type EL element.
Metal oxide electrodes such as nzOs and Snow are formed by a vacuum evaporation method or a resistance heating method, or by a method such as heat-pressing an AI foil or the like.
さらに、封止剤６としては、エポキシ樹脂、３フツ化塩
化エチレンなどが使用される。Furthermore, as the sealant 6, epoxy resin, ethylene trifluoride chloride, etc. are used.
次に、この発明の実施例について説明する。 Next, embodiments of the invention will be described.
実施例１
シアノエチル化プル５７１０重量部をジメチルホルムア
ミド１５重量部中に溶解し、これにＺｎＳ：Ｃｕ、ＣＩ
からなる蛍光体２５重量部を混合分散した後、ＫＳ６６
（信越化学工業社製、シリコーン消泡剤）を０．０２
重量部添加し、混合して発光塗料を調製した。Example 1 5710 parts by weight of cyanoethylated pull was dissolved in 15 parts by weight of dimethylformamide, and ZnS:Cu, CI
After mixing and dispersing 25 parts by weight of a phosphor consisting of KS66
(manufactured by Shin-Etsu Chemical Co., Ltd., silicone antifoaming agent) at 0.02
Parts by weight were added and mixed to prepare a luminescent paint.
次いで、この発光塗料を、第１図に示すように厚さ１．
１ｍｍの透明導電性ガラス板１上に形成したインジウム
−スズ酸化物からなる厚さｔｏｏｏ入の透明電極２上に
塗布し、１３０°Ｃで４時間乾燥して、１７さ３０ａｍ
の発光層３を形成した。Next, this luminescent paint is applied to a thickness of 1.5 mm as shown in FIG.
It was coated on a too thick transparent electrode 2 made of indium-tin oxide formed on a 1 mm transparent conductive glass plate 1, and dried at 130° C. for 4 hours to form a 17-30 am.
A light emitting layer 3 was formed.
次に、この発光層３上に厚さ７５μｍのアルミニウム箔
を、１５０°Ｃ１５ｋｇ／ｃ−の条件で加熱圧着して、
アルミニウムからなる背面電極４を形成し、これらをガ
ラス板５とエポキシ樹脂からなる封止剤６とで封止して
、第１図に示すような分散型上り素子Ａを作製した。Next, an aluminum foil with a thickness of 75 μm was heat-pressed on the light emitting layer 3 at 150°C and 15 kg/c-.
A back electrode 4 made of aluminum was formed, and these were sealed with a glass plate 5 and a sealant 6 made of epoxy resin to produce a distributed upstream element A as shown in FIG.
実施例２
実施例１における発光層の形成において、Ｋ Ｓ６６に
代えてプルロニックＬ ６１ （ＷｙａｎｄｏＬＬ
Ｃｈｅｍ、社製、ポリアルキレングリコール系消泡剤）
を同量使用した以外は、実施例１と同様にして発光層を
形成し、分１１に型ＥＬ素子八へ作製した。Example 2 In the formation of the light emitting layer in Example 1, Pluronic L 61 (WyandoLL) was used instead of K S66.
(manufactured by Chem, polyalkylene glycol antifoaming agent)
A light-emitting layer was formed in the same manner as in Example 1, except that the same amount of was used, and an EL device of type 8 was manufactured in 11 minutes.
比較例１
実施例１における発光層の形成において、ｆ（３６６の
添加を省いた以外は、実施例１と同様にして発光層を形
成し、分散型ＥＬ素子を作製した。Comparative Example 1 A light emitting layer was formed in the same manner as in Example 1, except that addition of f(366) was omitted in the formation of the light emitting layer in Example 1, and a dispersion type EL device was produced.
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４を交流電源７に接続し、１００Ｖ、
４００Ｈｚのパルス波で、２０ ’Ｃの条件下に駆動さ
せて、初期の輝度を測定した。The transparent electrode 2 and back electrode 4 of the distributed EL device obtained in each example and comparative example were connected to an AC power source 7,
The initial brightness was measured by driving with a 400 Hz pulse wave at 20'C.
また、ｔｏｏｖ、４００Ｈｚのパルス波で、２０°Ｃの
条件下で駆動し、輝度が初期の輝度の５０％になるまで
の時間を測定して、得られた分ｔｌｋ型ＥＬ素子の寿命
を調べた。In addition, the life of the TLK-type EL element was investigated by driving it with a 400Hz pulse wave at 20°C and measuring the time until the brightness reached 50% of the initial brightness. Ta.
下記第１表はその結果である。Table 1 below shows the results.
第１表
いずれも比較例１で得られた分ｎｋ型ＥＬ素子に比し、
初期輝度が高くて、寿命が長く、このことからこの発明
で得られる分散型ＥＬ素子は、輝度が高く、かつ寿命が
長（て耐久性に優れていることがわかる。In Table 1, compared to the NK-type EL element obtained in Comparative Example 1,
The initial brightness is high and the life is long, which indicates that the distributed EL element obtained by the present invention has high brightness and a long life (and is excellent in durability).
第１図はこの発明で得られた分１１に型Ｅｌ、素子の一
実施例を示す断面図である。
ｌ・・・透明導電性ガラス板、２・・・透明電極、３・
・・発光層、４・・・背面電極、Ａ・・・分散型ＥＬ素
子特許出願人 日立マクセル株式会社
〔発明の効果〕FIG. 1 is a cross-sectional view showing an embodiment of the element of type El obtained in this invention. l...Transparent conductive glass plate, 2...Transparent electrode, 3.
...Light emitting layer, 4...Back electrode, A...Distributed EL element Patent applicant Hitachi Maxell, Ltd. [Effects of the invention]
Claims (2)
を有する分散型ＥＬ素子において、発光層中に消泡剤を
含有させたことを特徴とする分散型ＥＬ素子1. A dispersion type EL element having a light emitting layer in which a phosphor is dispersed in a high dielectric constant binder resin, characterized in that the light emitting layer contains an antifoaming agent.
少なくとも発光層を形成して分散型ＥＬ素子を製造する
に際し、蛍光体を高誘電率結合剤樹脂および有機溶剤と
ともに混合分散させた中にさらに消泡剤を添加して発光
塗料を調製し、この発光塗料を用いて発光層を形成する
ことを特徴とする分散型ＥＬ素子の製造方法2. Between a pair of electrodes, at least one of which is a transparent electrode,
When manufacturing a dispersion type EL element by forming at least a light emitting layer, a light emitting coating is prepared by adding an antifoaming agent to a mixture of a phosphor mixed and dispersed with a high dielectric constant binder resin and an organic solvent. A method for producing a dispersed EL element, characterized by forming a light-emitting layer using a light-emitting paint
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1043625A JPH02223192A (en) | 1989-02-23 | 1989-02-23 | Dispersion-type el device and its manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1043625A JPH02223192A (en) | 1989-02-23 | 1989-02-23 | Dispersion-type el device and its manufacture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02223192A true JPH02223192A (en) | 1990-09-05 |
Family
ID=12669033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1043625A Pending JPH02223192A (en) | 1989-02-23 | 1989-02-23 | Dispersion-type el device and its manufacture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02223192A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2673802A1 (en) * | 1991-03-05 | 1992-09-11 | Bkl Inc | ELECTROLUMINESCENT DEVICES. |
-
1989
- 1989-02-23 JP JP1043625A patent/JPH02223192A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2673802A1 (en) * | 1991-03-05 | 1992-09-11 | Bkl Inc | ELECTROLUMINESCENT DEVICES. |
| GB2257828A (en) * | 1991-03-05 | 1993-01-20 | Bkl Inc | Electroluminescent device |
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