JPS6256635B2 - - Google Patents
Info
- Publication number
- JPS6256635B2 JPS6256635B2 JP58027986A JP2798683A JPS6256635B2 JP S6256635 B2 JPS6256635 B2 JP S6256635B2 JP 58027986 A JP58027986 A JP 58027986A JP 2798683 A JP2798683 A JP 2798683A JP S6256635 B2 JPS6256635 B2 JP S6256635B2
- Authority
- JP
- Japan
- Prior art keywords
- electrode film
- laminate
- film
- sheet
- plastic sheet
- 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.)
- Expired
Links
- 238000000034 method Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 3
- 239000011888 foil Substances 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 claims 1
- 230000005684 electric field Effects 0.000 claims 1
- 239000002985 plastic film Substances 0.000 description 14
- 238000007740 vapor deposition Methods 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005401 electroluminescence Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Description
【発明の詳細な説明】
(イ) 産業上の利用分野
この発明はEL（電界発光）素子を外皮フイル
ムで封止した有機型EL装置の製造方法に関す
る。DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application This invention relates to a method for manufacturing an organic EL device in which an EL (electroluminescent) element is sealed with an outer film.
(ロ) 従来技術
有機型EL装置（パネル）は軽量、柔軟性、薄
さに特徴があり、腕時計や電卓、各種計測器など
の文字、図形デイスプレイ装置や液晶表示装置の
バツクライト等として広く利用されている。この
有機型ELパネルの一般構造例を第１図で説明す
ると、１はEL素子、２，２はEL素子１を封止す
るフツ素系樹脂等の透明な外皮フイルムである。
EL素子１は次の順序で形成される。(b) Prior art Organic EL devices (panels) are characterized by their light weight, flexibility, and thinness, and are widely used as characters for watches, calculators, and various measuring instruments, and as backlights for graphic display devices and liquid crystal display devices. ing. An example of the general structure of this organic EL panel will be explained with reference to FIG. 1. Reference numeral 1 denotes an EL element, and numerals 2 and 2 denote a transparent outer film made of fluororesin or the like for sealing the EL element 1.
EL element 1 is formed in the following order.
先ずポリエステルフイルム等よりなる透明な１
枚のプラスチツクシート３の片面にIn2O3等の透
明電極膜４を印刷等で形成する。次に透明電極膜
４上に螢光体粒子、樹脂バインダーの混合物を印
刷等で塗着して発光層５を形成する。その後発光
層５上に必要に応じBaTiO3等の絶縁層６を形成
してからその上にAl蒸着等で背面電極膜７を形
成する。このようなEL素子１は上下の各電極膜
４，７から集電体を介する等して外部引出しリー
ド線８，９が導出され、その後全体を２枚の外皮
フイルム２，２でサンドイツチ式に挾んで外皮フ
イルム２，２の周縁部同士を熱圧着で一体化して
所望のフレキシブルなELパネル１０を得てい
る。各リード線８，９に交流電圧を印加すると発
光層５の螢光体粒子が電界発光してその光は透明
電極膜４、プラスチツクシート３外皮フイルム２
を透過して外部に出る。 First, a transparent layer 1 made of polyester film, etc.
A transparent electrode film 4 made of In 2 O 3 or the like is formed on one side of the plastic sheet 3 by printing or the like. Next, a mixture of phosphor particles and a resin binder is applied onto the transparent electrode film 4 by printing or the like to form a light-emitting layer 5. Thereafter, an insulating layer 6 such as BaTiO 3 is formed on the light emitting layer 5 as required, and a back electrode film 7 is formed thereon by Al vapor deposition or the like. In such an EL element 1, external lead wires 8 and 9 are led out from the upper and lower electrode films 4 and 7 via current collectors, and then the whole is assembled in a sandwich style with two outer films 2 and 2. The desired flexible EL panel 10 is obtained by sandwiching the peripheral edges of the outer skin films 2, 2 and integrating them by thermocompression bonding. When an alternating current voltage is applied to each lead wire 8, 9, the phosphor particles of the light emitting layer 5 emit electroluminescence, and the light is transmitted to the transparent electrode film 4, the plastic sheet 3, the outer film 2, etc.
pass through and go outside.
(ハ) 発明が解決しようとする問題点
上記有機型ELパネル１０には次の各問題点が
あつた。(c) Problems to be Solved by the Invention The organic EL panel 10 described above had the following problems.
(a) ELパネル１０はその用途拡大に伴つてより
薄いものが要求されているが、外皮フイルム
２，２やプラスチツクシート３を含むEL素子
１の各層の厚さがほぼ限界に達しているので上
記要求に十分応じることができなくなつてきて
いる。(a) The EL panel 10 is required to be thinner as its uses expand, but the thickness of each layer of the EL element 1 including the outer films 2, 2 and the plastic sheet 3 has almost reached its limit. It is becoming increasingly difficult to meet the above demands.
(b) EL素子１のプラスチツクシート３は十分透
光性の良好なものが選定されているが、技術的
に100％光を通すものの製作ができず、プラス
チツクシート３の光吸収による輝度低下の問題
が解決できないでいる。(b) The plastic sheet 3 of the EL element 1 has been selected to have good translucency, but it is technically impossible to manufacture a sheet that transmits 100% of the light, and the reduction in brightness due to the absorption of light by the plastic sheet 3 is difficult. I can't solve the problem.
(c) プラスチツクシート３を基台にしてEL素子
１の各層を順次積層形成するため、特に透明電
極膜４から外部引出しリード線８を導出する技
術が難しい。即ち、透明導電膜が接着内面にな
つて、外部引き出しリードの透明導電膜との電
気的な接着部が埋没しておりこの為にプラスチ
ツクシート３の所定部分を剥離するか又はあら
かじめマスキング等で選別積層する等の煩雑な
作業が必要である。また透明電極膜４を印刷に
より形成する方法もあるが、印刷では光の透過
率も低く膜厚にバラツキが生じて発光ムラの原
因になることがある。(c) Since each layer of the EL element 1 is sequentially laminated using the plastic sheet 3 as a base, the technique for leading out the external lead wire 8 from the transparent electrode film 4 is particularly difficult. That is, the transparent conductive film becomes the adhesive inner surface, and the electrically bonded part of the external lead lead to the transparent conductive film is buried, so that a predetermined portion of the plastic sheet 3 must be peeled off or selected by masking or the like in advance. Complicated work such as lamination is required. There is also a method of forming the transparent electrode film 4 by printing, but printing has a low light transmittance and causes variations in film thickness, which may cause uneven light emission.
(d) プラスチツクシート３と外皮フイルム２の材
質の違いによる熱膨脹係数の差により、EL素
子１を外皮フイルム２，２で封止する時にEL
素子１と外皮フイルム２，２の間に空隙が生
じ、これが光の屈折率を部分的に変えて発光ム
ラを引き起すことがある。更にはELパネルの
平滑性をそこなう原因ともなつている。(d) Due to the difference in thermal expansion coefficient due to the difference in material between the plastic sheet 3 and the outer film 2, the EL element 1 is sealed with the outer films 2, 2.
A gap is formed between the element 1 and the outer skin films 2, which may partially change the refractive index of light and cause uneven light emission. Furthermore, it also causes damage to the smoothness of the EL panel.
(ニ) 問題点を解決するための手段
本発明者は上記各問題点を検討した結果、上記
各問題点が全てEL素子をプラスチツクシートを
基台に形成した構造に基因し、プラスチツクシー
トを省略すれば上記各問題点が解決されることを
実験的に知見した。そこで本発明は上記問題点を
解決する手段として、プラスチツク等のシートの
片面に第１電極膜（透明電極膜に相当）を形成し
た長尺な第１積層体と、第２電極膜（背面電極膜
に相当）の片面に発光層又は絶縁層と発光層を積
層した長尺な第２積層体を用意し、この第１、第
２積層体を一対のローラ間に通して第１電極膜と
発光層を熱圧着で貼り合せた後、第１電極膜から
シートを順次に剥してシートの無いEL素子を形
成し、このEL素子を適当に裁断して外部引出し
リード線を導出した状態で外皮フイルムで封止す
る製造方法を提供する。このようにEL素子から
プラスチツクシートを省略すればプラスチツクシ
ートの分だけELパネルは薄くでき、透光性が良
好になる等して上記問題点が容易に解決され得
る。(d) Means for Solving the Problems As a result of studying the above-mentioned problems, the inventor found that the above-mentioned problems were all due to the structure in which the EL element was formed on a plastic sheet, and the plastic sheet was omitted. It was found experimentally that each of the above problems could be solved by doing so. Therefore, as a means to solve the above-mentioned problems, the present invention provides a long first laminate in which a first electrode film (corresponding to a transparent electrode film) is formed on one side of a sheet such as a plastic sheet, and a second electrode film (a back electrode film). Prepare a long second laminate in which a luminescent layer or an insulating layer and a luminescent layer are laminated on one side (equivalent to a film), and pass the first and second laminates between a pair of rollers to form a first electrode film and a luminescent layer. After the light-emitting layer is bonded by thermocompression bonding, the sheets are sequentially peeled off from the first electrode film to form an EL element without a sheet, and this EL element is cut into appropriate pieces and the outer skin is removed with the external lead wires drawn out. A manufacturing method for sealing with a film is provided. If the plastic sheet is omitted from the EL element in this way, the EL panel can be made thinner by the amount of the plastic sheet, and the above problems can be easily solved, such as by improving translucency.
(ホ) 実施例
本発明の具体的実施装置例を示す第２図におい
て、１１は第１積層体、１２は第２積層体、１３
及び１４は繰り出し用第１、第２スプール、１５
及び１６は巻取り用第３、第４スプール、１７及
び１８は熱圧着用の一対のローラ、１９〜２１は
ガイドローラである。第１積層体１１は長尺なプ
ラスチツク等のシート２２の片面にIn2O3蒸着時
で透明電極膜（第１電極膜）２３を被着形成した
もので、第１スプール１３に巻回される。第２積
層体１２は長尺なAl箔等の背面電極膜２４の片
面に必要に応じBaTiO3等の絶縁層２５を形成し
てからその上に発光層２６を塗着したもので、第
２スプール１４に巻回される。(e) Example In FIG. 2 showing a specific example of an apparatus for implementing the present invention, 11 is a first laminate, 12 is a second laminate, and 13 is a first laminate.
and 14 are first and second spools for feeding, 15
and 16 are third and fourth spools for winding, 17 and 18 are a pair of rollers for thermocompression, and 19 to 21 are guide rollers. The first laminate 11 is formed by depositing a transparent electrode film (first electrode film) 23 on one side of a long sheet 22 of plastic or the like during In 2 O 3 vapor deposition, and is wound around a first spool 13 . Ru. The second laminate 12 is made by forming an insulating layer 25 such as BaTiO 3 on one side of a long back electrode film 24 such as Al foil, if necessary, and then coating a light-emitting layer 26 thereon. It is wound around the spool 14.
第１、第２スプール１３，１４は熱圧着用の一
対のローラ１７，１８の前方定位置に配置され、
第１、第２スプール１３，１４から繰り出された
第１、第２積層体１１，１２はガイドローラ１
９，２０を経てローラ１７，１８間を通り、この
ローラ１７，１８の間を通過する間に第１積層体
１１の透明電極膜２３が第２積層体１２の発光層
２６に順次熱圧着されて転写される。ローラ１
７，１８を出た第１積層体１１のシート２２はガ
イドローラ２１を介し第３スプール１５へと巻取
られ、一方第２積層体１１はシート２２と一定の
角度θをもつて第４スプール１６へと巻取られ、
これによつて第１積層体１１はローラ１７，１８
間で透明電極膜２３を第２積層体１２に転写する
と透明電極膜２３からシート２２が剥れて二分さ
れる。ローラ１７，１８間を出た第２積層体１２
は透明電極膜１１の被着にて４層構造の第３積層
体、いわゆるシートの無い長尺なEL素子２７と
なつて第４スプール１６に巻取られていく。 The first and second spools 13 and 14 are arranged at fixed positions in front of a pair of rollers 17 and 18 for thermocompression,
The first and second laminates 11 and 12 unwound from the first and second spools 13 and 14 are attached to the guide roller 1
9 and 20 and between rollers 17 and 18, and while passing between the rollers 17 and 18, the transparent electrode film 23 of the first laminate 11 is successively bonded by thermocompression to the light emitting layer 26 of the second laminate 12. transcribed. roller 1
The sheet 22 of the first laminate 11 that has exited the sheets 7 and 18 is wound onto the third spool 15 via the guide roller 21, while the second laminate 11 is wound onto the fourth spool 15 at a constant angle θ with the sheet 22. It is wound up to 16,
As a result, the first laminate 11 is moved by the rollers 17 and 18.
When the transparent electrode film 23 is transferred to the second laminate 12 in between, the sheet 22 is separated from the transparent electrode film 23 and divided into two parts. Second laminate 12 exiting between rollers 17 and 18
When the transparent electrode film 11 is applied, a third laminate having a four-layer structure, so-called a long EL element 27 without a sheet, is formed and wound onto the fourth spool 16.
このようにして得た長尺なEL素子２７は後工
程でその表裏両面の各電極膜２３，２４に集電体
が印刷され、適当な長さに切断され、そして第３
図に示すように外部引出しリード線２８，２９を
導出した状態で外皮フイルム３０，３０にて封止
され、有機型ELパネル３１が得られる。外部引
出しリード線２８，２９を導出するための各電極
膜２３，２４に印刷する集電体は上述の第１、第
２の積層体１１，１２の段階で予め印刷すること
も可能である。 The elongated EL element 27 obtained in this way is printed with a current collector on each of the electrode films 23 and 24 on both the front and back surfaces in a subsequent process, cut into an appropriate length, and then
As shown in the figure, the external lead wires 28 and 29 are drawn out and sealed with outer skin films 30 and 30 to obtain an organic EL panel 31. The current collectors printed on the electrode films 23 and 24 for leading out the external lead wires 28 and 29 can also be printed in advance at the stage of the first and second laminates 11 and 12 described above.
(ヘ) 発明の効果
以上説明したように、本発明によればプラスチ
ツクシートの無いEL素子を使つたEL装置が簡単
に且つ量産性容易に製造できる。またEL装置の
薄板化、輝度向上が図れ、更にEL素子と外皮フ
イルムとの熱収縮の影響による発光ムラの解除、
各電極膜を別個に蒸着で形成することが容易なた
め膜厚の均一化が可能であり、有機型EL装置の
大幅な品質改善が図れる。(F) Effects of the Invention As explained above, according to the present invention, an EL device using an EL element without a plastic sheet can be easily manufactured in mass production. In addition, it is possible to make the EL device thinner, improve brightness, and eliminate uneven light emission caused by heat shrinkage between the EL element and the outer film.
Since each electrode film can be easily formed by separate vapor deposition, the film thickness can be made uniform, and the quality of organic EL devices can be significantly improved.
第１図は一般的有機型EL装置の断面図、第２
図は本発明に係る方法の実施装置例を示す部分拡
大側面図、第３図は第２図の装置で得たEL素子
を使つたEL装置の一例を示す断面図である。
１１……第１積層体、１２……第２積層体、１
７，１８……ローラ、２２……シート、２３……
第１電極膜（透明電極膜）、２４……第２電極膜
（背面電極膜）、２６……発光層、２７……EL素
子、２８，２９……外部引出しリード線、３０…
…外皮フイルム。
Figure 1 is a cross-sectional view of a general organic EL device, Figure 2
The figure is a partially enlarged side view showing an example of an apparatus for implementing the method according to the present invention, and FIG. 3 is a sectional view showing an example of an EL device using the EL element obtained with the apparatus of FIG. 2. 11...First laminate, 12...Second laminate, 1
7, 18...roller, 22...sheet, 23...
First electrode film (transparent electrode film), 24... Second electrode film (back electrode film), 26... Light emitting layer, 27... EL element, 28, 29... External lead wire, 30...
...Outer skin film.
Claims (1)
着形成した第１積層体を得る工程、アルミニウム
箔等の長尺な第２電極膜の片面に少くとも電界の
付与で発光する発光層を被着形成した第２積層体
を得る工程、前記第１、第２積層体を一対のロー
ラ間に通して第１電極膜と発光層を順次貼り合わ
せた後第１電極膜からシートを順次剥離して長尺
なEL素子を得る工程、EL素子から外部引出しリ
ード線を導出してEL素子を外皮フイルムで封止
する工程とを具備したことを特徴とするEL装置
製造方法。1 Step of obtaining a first laminate in which a transparent first electrode film is formed on one side of an elongated sheet, and emitting light by applying at least an electric field to one side of an elongated second electrode film such as aluminum foil. A step of obtaining a second laminate on which layers have been deposited, passing the first and second laminates between a pair of rollers to sequentially bond the first electrode film and the light emitting layer, and then removing the sheet from the first electrode film. 1. A method for manufacturing an EL device, comprising the steps of sequentially peeling off the EL element to obtain a long EL element, and leading out an external lead wire from the EL element and sealing the EL element with an outer film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58027986A JPS59154792A (en) | 1983-02-21 | 1983-02-21 | Method of producing el device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58027986A JPS59154792A (en) | 1983-02-21 | 1983-02-21 | Method of producing el device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59154792A JPS59154792A (en) | 1984-09-03 |
| JPS6256635B2 true JPS6256635B2 (en) | 1987-11-26 |
Family
ID=12236158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58027986A Granted JPS59154792A (en) | 1983-02-21 | 1983-02-21 | Method of producing el device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59154792A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0345464Y2 (en) * | 1985-10-25 | 1991-09-26 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6244916U (en) * | 1985-09-06 | 1987-03-18 |
-
1983
- 1983-02-21 JP JP58027986A patent/JPS59154792A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0345464Y2 (en) * | 1985-10-25 | 1991-09-26 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59154792A (en) | 1984-09-03 |
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| JPH0125200B2 (en) |