JPS58165291A - Electric field light emitting lamp - Google Patents
Electric field light emitting lampInfo
- Publication number
- JPS58165291A JPS58165291A JP57048413A JP4841382A JPS58165291A JP S58165291 A JPS58165291 A JP S58165291A JP 57048413 A JP57048413 A JP 57048413A JP 4841382 A JP4841382 A JP 4841382A JP S58165291 A JPS58165291 A JP S58165291A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- light emitting
- luminescent layer
- electrode body
- interposed
- 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
- 230000005684 electric field Effects 0.000 title 1
- 239000011230 binding agent Substances 0.000 claims description 13
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 9
- 239000000843 powder Substances 0.000 claims description 7
- 229920005992 thermoplastic resin Polymers 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 12
- 239000010408 film Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 239000010409 thin film Substances 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000010419 fine particle Substances 0.000 description 3
- 239000012212 insulator Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical class [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 description 3
- 239000002318 adhesion promoter Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000007650 screen-printing Methods 0.000 description 2
- 229910000077 silane Inorganic materials 0.000 description 2
- 125000001731 2-cyanoethyl group Chemical group [H]C([H])(*)C([H])([H])C#N 0.000 description 1
- XCKPLVGWGCWOMD-YYEYMFTQSA-N 3-[[(2r,3r,4s,5r,6r)-6-[(2s,3s,4r,5r)-3,4-bis(2-cyanoethoxy)-2,5-bis(2-cyanoethoxymethyl)oxolan-2-yl]oxy-3,4,5-tris(2-cyanoethoxy)oxan-2-yl]methoxy]propanenitrile Chemical compound N#CCCO[C@H]1[C@H](OCCC#N)[C@@H](COCCC#N)O[C@@]1(COCCC#N)O[C@@H]1[C@H](OCCC#N)[C@@H](OCCC#N)[C@H](OCCC#N)[C@@H](COCCC#N)O1 XCKPLVGWGCWOMD-YYEYMFTQSA-N 0.000 description 1
- 241000254158 Lampyridae Species 0.000 description 1
- NYZGMENMNUBUFC-UHFFFAOYSA-N P.[S-2].[Zn+2] Chemical compound P.[S-2].[Zn+2] NYZGMENMNUBUFC-UHFFFAOYSA-N 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 description 1
- 229910002113 barium titanate Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 150000004756 silanes Chemical class 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
この発明は可撓性電界発光灯、特に電極体と発光体層の
間に接着助剤層を介在させ、両者を熱圧着した電界発光
素子に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a flexible electroluminescent lamp, and more particularly to an electroluminescent element in which an electrode body and a light emitting layer are bonded together by thermocompression, with an adhesion promoter layer interposed between them.
一般に、可撓性電界発光灯は、第１図に示すように、少
なくとも一方を透光とした一対の平板状の電極体１．２
間に螢光体層８や絶縁体層４からなる発光体層５を介在
した電界発光素子６を、両電極体１．２に接続した電極
リード７．８の一部を残して両側より耐湿性良好な樹脂
外皮９で被覆し、素子５周縁部の樹脂外皮９間を封着し
たもので、シート状で可撓性が得られるため各種形状の
表示装置や液晶のバックライト等（ｆこ用いられている
。Generally, a flexible electroluminescent lamp consists of a pair of flat electrode bodies 1.2, at least one of which is transparent, as shown in FIG.
An electroluminescent element 6 with a luminescent layer 5 made of a phosphor layer 8 and an insulator layer 4 interposed therebetween is moisture-proofed from both sides, leaving a part of the electrode lead 7.8 connected to both electrode bodies 1.2. The device is coated with a resin outer skin 9 having good properties, and the resin outer skin 9 on the periphery of the element 5 is sealed.Since it is sheet-like and has flexibility, it can be used for display devices of various shapes, liquid crystal backlights, etc. It is used.
か＼るシート状の可撓性電界発光灯は、その電界発光素
子６が、一般に図示するように、一対の平板状の電極体
１，２間に螢光体層３や絶縁体層４を介在した積層構造
であり、一方の電極体２、例えばＡｌｌ上上熱可塑性樹
脂材からなる高誘電率の有機バインダ中に高誘電体微粒
子を分散した絶縁体層４や、同じく熱可塑性樹脂材から
なる高誘電率の有機バインダ中に螢光体粉末を分散した
螢光体層３を逐次スクリーン印刷法等を用いて積層し、
この上に他方の電極体−１となる透明導電フィルムを載
置して両面より加熱プレス機や加熱ローラで熱圧着して
得られるもので、発光体層５と電極体ｌとが熱圧着で接
着出来量産性に適するものである。In such a sheet-like flexible electroluminescent lamp, the electroluminescent element 6 generally has a phosphor layer 3 or an insulator layer 4 between a pair of flat electrode bodies 1 and 2, as shown in the figure. It has an interposed laminated structure, and one electrode body 2, for example, has an insulating layer 4 in which high dielectric fine particles are dispersed in a high dielectric constant organic binder made of a thermoplastic resin material, or an insulating layer 4 made of a thermoplastic resin material. A phosphor layer 3 in which phosphor powder is dispersed in an organic binder having a high dielectric constant is sequentially laminated using a screen printing method or the like.
It is obtained by placing a transparent conductive film, which will become the other electrode body 1, on top of this and thermo-compression bonding from both sides with a hot press machine or a heating roller, and the luminescent layer 5 and electrode body 1 are bonded by thermo-compression bonding. It can be bonded and is suitable for mass production.
ところで、この発光体層５と電極体１との熱圧着は、通
常発光体層５の有機バインダの可塑化温度以上に加温設
定された加熱プレス機や加熱ローラで熱圧着して行われ
るが、電極体１の表面が平坦な金属体であり充分な接着
強度が得にくいもので剥離したり部分的に接着しないと
いった問題点があった。従って発光面に輝度ムラを生じ
たり、素子製造途上で電極剥離を生ずる等トラブルの原
因となっていた。Incidentally, the thermocompression bonding between the luminescent layer 5 and the electrode body 1 is usually carried out by thermocompression bonding using a heated press machine or heated roller heated to a temperature higher than the plasticizing temperature of the organic binder of the luminescent layer 5. Since the electrode body 1 is a metal body with a flat surface, it is difficult to obtain sufficient adhesive strength, resulting in problems such as peeling or partial failure to adhere. This has caused problems such as uneven brightness on the light emitting surface and peeling of electrodes during device manufacturing.
このため、従来は熱圧着を複数回繰り返したり、加熱温
度を高めて再熱圧着を行ない何とか接着強度を得ていた
が、作業が繁雑となるばかりでなく、加熱温度を高める
と電極体１の透明導電フィルムが加熱収縮して変形した
り、１発光体層５内部の螢１
光体粉末が劣化して輝度低下を招ねく等有効な解□
失策がなかった。 一
本発明は以上に濫み提案されたもので、圧着温度を高め
たり、再熱圧着することなく、発光体層５と電極体１．
２との強固な接着が得られる電界発光灯を提供すること
を目的とする。For this reason, in the past, adhesive strength was somehow achieved by repeating thermocompression bonding multiple times or by increasing heating temperature and performing re-thermocompression bonding, but this not only made the work complicated, but also increased the heating temperature. There were no effective solutions such as the transparent conductive film being heat-shrinked and deformed, or the firefly powder inside the 1-luminescent layer 5 deteriorating resulting in a decrease in brightness. One aspect of the present invention has been proposed as described above, in which the luminescent layer 5 and the electrode body 1 can be bonded together without increasing the bonding temperature or reheating and bonding.
It is an object of the present invention to provide an electroluminescent lamp that can provide strong adhesion to the substrate.
本発明に係る電界発光灯は、一対の平板状電極体に熱可
塑性樹脂材の有機バインダに螢光体粉末を分散した発光
体層を介在し両者を熱圧着するものにおいて前記発光体
層と前記電極体との間にシランカップリング剤の接着助
剤層を介在したことを特徴とするもので、発光体層の有
機バインダと電極体の金属がシランカップリング剤の化
学共有結合で強固な接着が得られたものである。このシ
ラン力・ツブリング剤は一般にＸ〜−一５ｉ（ＯＲ）。The electroluminescent lamp according to the present invention is one in which a pair of flat electrode bodies are interposed with a luminescent layer made of a thermoplastic resin organic binder and a fluorescent powder dispersed therein, and the luminescent layer and the luminescent layer are bonded together by thermocompression. It is characterized by an adhesion aid layer of a silane coupling agent interposed between the electrode body and the organic binder of the light emitting layer and the metal of the electrode body, which are strongly bonded by the chemical covalent bond of the silane coupling agent. is what was obtained. This silane strength/twisting agent is generally X~--5i (OR).
の構造式で現わされ、Ｘは有機質と反応する官能基（ア
ミノ基１、ビニル基、エポキシ基等）でＲは加水分解可
能な基（メトキシ基、エトキシ基等）で同一分子内に異
なる二種の官能基を有し、有機質と無機物のなソ、・だ
ちの役目を果たすもので、例えばアミノシラン類を用い
ることが出来る。It is represented by the structural formula, where X is a functional group that reacts with organic substances (amino group 1, vinyl group, epoxy group, etc.), and R is a hydrolyzable group (methoxy group, ethoxy group, etc.), which are different within the same molecule. It has two types of functional groups and acts as a barrier between organic and inorganic substances, and for example, aminosilanes can be used.
、１．・ 以下本発明の１施例を詳述する。, 1.・ One embodiment of the present invention will be described in detail below.
第２図は、本発明に係る可撓性電界発光灯の断面図を示
している。。即ち、この電界発光灯の発光素子１１は、
第１図と同様に、一対の平板状電極１．２間に螢光体層
３や絶縁体層４の発光体層５を積層した通常の構造で、
第１図と異なる点は、熱圧着される螢光体層３と電極体
ｌとの間にシランカップリング剤の接着助剤層１２が介
在されている点である。尚こＸで第１図と同じ機能部品
は同一記号で示し説明を略す。この接着助剤層１２はシ
ランカップリング剤、たとえばアミノシラン類が用いら
れ、電極体１の螢光体層３との接着面に均一な薄膜状に
被着されている。FIG. 2 shows a cross-sectional view of a flexible electroluminescent lamp according to the invention. . That is, the light emitting element 11 of this electroluminescent lamp is
Similar to FIG. 1, it has a normal structure in which a phosphor layer 3 and a light emitting layer 5 of an insulator layer 4 are laminated between a pair of flat electrodes 1.2.
The difference from FIG. 1 is that an adhesion aid layer 12 of a silane coupling agent is interposed between the phosphor layer 3 and the electrode body 1 which are bonded by thermocompression. Note that the same functional parts as in FIG. 1 are indicated by the same symbols and their explanations will be omitted. This adhesion aid layer 12 uses a silane coupling agent such as aminosilane, and is applied in the form of a uniform thin film to the adhesive surface of the electrode body 1 with the phosphor layer 3.
次にか−る構造をもつ可撓性電界発光灯の製造方法につ
いて述べる。Next, a method for manufacturing a flexible electroluminescent lamp having the above structure will be described.
先づ、一方の電極２にＡ４箔が用いられ、このＡｔ箔上
に、熱可塑性樹脂材からなる高誘電率の有機バインダ中
に高誘電体微粒子を分散した絶縁体層４、及び同じく高
誘電率の有機バインダ中に螢光体粉末を分散した螢光体
層８を逐次積層して発光体層５を形成する（第８図参照
）。上記発光体層５の形成には、先ず、高誘電率の有機
バインダとして、例えばシアノエチルセルローヌ或いは
シアノエチルサクロース等高誘電率を有する公知の熱可
塑性樹脂材が用いられ、これに夫々チタン酸バリウムの
高誘電体微粒子や硫化亜鉛の螢光体粉末を所定量調合し
て有機溶剤で懸濁した塗布液を夫々作成し、これらの塗
布液をスクリーン印刷法により均一な薄膜状に逐次印刷
して積層すればよい。First, an A4 foil is used for one electrode 2, and on this At foil, an insulating layer 4 in which high dielectric fine particles are dispersed in a high dielectric constant organic binder made of a thermoplastic resin material, and also a high dielectric layer 4 are formed. The phosphor layer 5 is formed by sequentially laminating phosphor layers 8 in which phosphor powder is dispersed in an organic binder of a certain amount (see FIG. 8). To form the luminescent layer 5, first, a known thermoplastic resin material having a high dielectric constant, such as cyanoethyl cellulone or cyanoethyl sucrose, is used as an organic binder having a high dielectric constant, and barium titanate is added to each of these. Predetermined amounts of high dielectric fine particles and zinc sulfide phosphor powder are mixed and suspended in an organic solvent to create a coating solution, and these coating solutions are sequentially printed into a uniform thin film using a screen printing method. All you have to do is laminate them.
次に他方の電極１は、例えばポリエステル樹脂フィルム
１ａに酸化インジウム等の透明導電層１ｂが被着された
透明導電フィルムが用いられ、このフィルム１の導電層
１ｂにシランカップリング剤が薄膜に被着され、接着助
剤層１２が形成される（第４図参照）６シランカソプリ
ング剤には、発光体層５に用いた有機バインダと適合す
る前記アミノシラン類が用いられ、ディ・ノブ法や吹付
法により数λ程度の薄膜状に被着する。次に接着助剤層
１２の形成された透明導電フィルム１を上記発光体層５
の積層された電Ｉｆｉ２上に載置し、発光体層５の有機
バインダの可塑化温度以上に加温した加熱ローラー１８
にかけて両面より圧接（第５図参照）すると、発光素子
１１が得られ、これを従来同様に樹脂外皮９で封着すれ
ば第２図に示す可撓性の電界発光灯が得られる。Next, the other electrode 1 is a transparent conductive film in which a transparent conductive layer 1b of indium oxide or the like is adhered to a polyester resin film 1a, for example, and a silane coupling agent is coated in a thin film on the conductive layer 1b of this film 1. The above-mentioned aminosilanes that are compatible with the organic binder used for the luminescent layer 5 are used as the 6-silane cassoplating agent to form the adhesion aid layer 12 (see FIG. 4), and the D-Nobu method or It is applied in the form of a thin film of several λ by the spraying method. Next, the transparent conductive film 1 with the adhesion promoter layer 12 formed thereon is attached to the luminescent layer 5.
Heating roller 18 placed on the laminated electric Ifi 2 and heated to a temperature higher than the plasticizing temperature of the organic binder of the luminescent layer 5
By applying pressure from both sides (see FIG. 5), a light emitting element 11 is obtained, and by sealing this with a resin outer cover 9 in the conventional manner, a flexible electroluminescent lamp shown in FIG. 2 is obtained.
このように、シランカップリング剤の接着助剤層１２を
介して発光体層５と電極体１を熱圧着した電界発光素子
１１は、シランカップリング剤が発光体層５の有機バイ
ンダの有機質と電極体ｌの金属質の化学共有結合を生ず
る反応を示し両者の強力な接着が得られ、従来の如く多
回の熱圧着や圧着温度を高めること力＜、発光面全面に
亘って均一な接着が得られた。又、このように製作した
発光素子を用いて樹脂封止した電界発光灯は、従来方法
で製作した電界発光灯と同等の輝度及び寿う
金持性が得られた。尚、上記実施例でシーンカップリン
グ剤の接着助剤層１２を透明導電フィルム１と螢光体層
８との間に介在したが、これをアルミ箔２と絶縁体層４
との間に介在させ、或いは双方に介在させても同様の効
果が得られることは明らかである。In this way, in the electroluminescent device 11 in which the luminescent layer 5 and the electrode body 1 are bonded together by thermocompression via the adhesion aid layer 12 of the silane coupling agent, the silane coupling agent is combined with the organic substance of the organic binder of the luminescent layer 5. A reaction occurs that causes a chemical covalent bond between the metallic materials of the electrode body, and strong adhesion between the two can be obtained, allowing for uniform adhesion over the entire surface of the light emitting surface, without the need for multiple thermocompression bonding or increasing the pressure bonding temperature as in the conventional method. was gotten. Further, an electroluminescent lamp using the light emitting element manufactured in this way and sealed with resin had the same brightness and longevity as the electroluminescent lamp manufactured by the conventional method. In the above embodiment, the adhesion aid layer 12 of the scene coupling agent was interposed between the transparent conductive film 1 and the phosphor layer 8;
It is clear that similar effects can be obtained by intervening between the two or both.
以上のように、本発明は、一対の電極体間に有機バイン
ダに螢光体粉末を分散した発光体層を介在させ、電極体
と発光体層とを熱圧着する電界発光灯において、発光体
層と電極体との間にシランカップリング剤の接着助剤層
を介在したから、強固な接着が得られ、発光面の輝度ム
ラや電極剥れが解消すると共に輝度特性の優れた電界発
光灯が提供出来る。As described above, the present invention provides an electroluminescent lamp in which a luminescent layer in which phosphor powder is dispersed in an organic binder is interposed between a pair of electrode bodies, and the electrode body and the luminescent layer are thermocompression bonded. An adhesion aid layer of silane coupling agent is interposed between the layer and the electrode body, resulting in strong adhesion, eliminating uneven brightness on the light emitting surface and peeling of the electrode, and producing an electroluminescent lamp with excellent brightness characteristics. can be provided.
第１図は従来の可撓性電界発光灯の断面図、第２図は本
発明に係る可撓性電界発光灯の断面図、第３図乃至第５
図は第２図の製作途上の部品を示す断面図である。Fig. 1 is a sectional view of a conventional flexible electroluminescent lamp, Fig. 2 is a sectional view of a flexible electroluminescent lamp according to the present invention, and Figs.
The figure is a sectional view showing the part in the process of being manufactured in FIG. 2.
Claims (1)
バインダーに螢光体粉末を分散した発光体層を介在させ
、電極体と発光体層とを熱圧着するものにおいて、前記
電極体と前記発光体層の間にシランカップリング剤の接
着助剤層を介在したことを特徴とする電界発光灯。A luminescent layer made of a fluorescent powder dispersed in an organic binder made of a thermoplastic resin material is interposed between a pair of flat electrode bodies, and the electrode body and the luminescent layer are bonded by thermocompression. An electroluminescent lamp characterized in that an adhesion aid layer of a silane coupling agent is interposed between the light emitting layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57048413A JPS58165291A (en) | 1982-03-25 | 1982-03-25 | Electric field light emitting lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57048413A JPS58165291A (en) | 1982-03-25 | 1982-03-25 | Electric field light emitting lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58165291A true JPS58165291A (en) | 1983-09-30 |
Family
ID=12802614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57048413A Pending JPS58165291A (en) | 1982-03-25 | 1982-03-25 | Electric field light emitting lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58165291A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61269807A (en) * | 1985-05-22 | 1986-11-29 | 日東電工株式会社 | Composite sheet |
| JPS63112795U (en) * | 1987-01-16 | 1988-07-20 | ||
| JPH0273091U (en) * | 1988-11-25 | 1990-06-04 | ||
| JPH02201890A (en) * | 1989-01-31 | 1990-08-10 | Seikosha Co Ltd | Electroluminescence device |
| JPH02312185A (en) * | 1989-05-26 | 1990-12-27 | Nec Kansai Ltd | Manufacture of organic distributed electroluminescent lamp |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53108399A (en) * | 1977-01-27 | 1978-09-21 | Atkins & Merrill | Electroluminescence lamp enclosed at high temperature |
-
1982
- 1982-03-25 JP JP57048413A patent/JPS58165291A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53108399A (en) * | 1977-01-27 | 1978-09-21 | Atkins & Merrill | Electroluminescence lamp enclosed at high temperature |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61269807A (en) * | 1985-05-22 | 1986-11-29 | 日東電工株式会社 | Composite sheet |
| JPS63112795U (en) * | 1987-01-16 | 1988-07-20 | ||
| JPH0526720Y2 (en) * | 1987-01-16 | 1993-07-06 | ||
| JPH0273091U (en) * | 1988-11-25 | 1990-06-04 | ||
| JPH0527839Y2 (en) * | 1988-11-25 | 1993-07-15 | ||
| JPH02201890A (en) * | 1989-01-31 | 1990-08-10 | Seikosha Co Ltd | Electroluminescence device |
| JPH02312185A (en) * | 1989-05-26 | 1990-12-27 | Nec Kansai Ltd | Manufacture of organic distributed electroluminescent lamp |
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