JP2774542B2 - Manufacturing method of dispersion type EL element - Google Patents
Manufacturing method of dispersion type EL elementInfo
- Publication number
- JP2774542B2 JP2774542B2 JP1017251A JP1725189A JP2774542B2 JP 2774542 B2 JP2774542 B2 JP 2774542B2 JP 1017251 A JP1017251 A JP 1017251A JP 1725189 A JP1725189 A JP 1725189A JP 2774542 B2 JP2774542 B2 JP 2774542B2
- Authority
- JP
- Japan
- Prior art keywords
- layer
- dispersion
- type
- film
- electrode 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.)
- Expired - Fee Related
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 239000006185 dispersion Substances 0.000 title description 13
- 239000012212 insulator Substances 0.000 claims description 14
- 239000011230 binding agent Substances 0.000 claims description 13
- 239000000853 adhesive Substances 0.000 claims description 9
- 230000001070 adhesive effect Effects 0.000 claims description 9
- 239000011347 resin Substances 0.000 claims description 9
- 229920005989 resin Polymers 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 5
- 230000035699 permeability Effects 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- 229920006280 packaging film Polymers 0.000 claims description 3
- 239000012785 packaging film Substances 0.000 claims description 3
- 230000018044 dehydration Effects 0.000 claims 1
- 238000006297 dehydration reaction Methods 0.000 claims 1
- 238000004806 packaging method and process Methods 0.000 description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 5
- 239000011888 foil Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- KXJGSNRAQWDDJT-UHFFFAOYSA-N 1-acetyl-5-bromo-2h-indol-3-one Chemical compound BrC1=CC=C2N(C(=O)C)CC(=O)C2=C1 KXJGSNRAQWDDJT-UHFFFAOYSA-N 0.000 description 4
- 239000004973 liquid crystal related substance Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 230000001771 impaired effect Effects 0.000 description 3
- 229920002493 poly(chlorotrifluoroethylene) Polymers 0.000 description 3
- -1 polychlorotrifluoroethylene Polymers 0.000 description 3
- 239000005023 polychlorotrifluoroethylene (PCTFE) polymer Substances 0.000 description 3
- 229920006267 polyester film Polymers 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 229920006122 polyamide resin Polymers 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000001856 Ethyl cellulose Substances 0.000 description 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004373 Pullulan Substances 0.000 description 1
- 229920001218 Pullulan Polymers 0.000 description 1
- 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 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 229920002433 Vinyl chloride-vinyl acetate copolymer Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 125000004093 cyano group Chemical group *C#N 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920006284 nylon film Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 235000019423 pullulan Nutrition 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Electroluminescent Light Sources (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、分散型EL素子の製造方法に係り、特に平面
性などを改善した分散型EL素子の製造方法に関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a dispersion-type EL element, and more particularly to a method for manufacturing a dispersion-type EL element with improved flatness and the like.
（従来の技術） たとえば、Al箔などから成る背面電極層上に、シアノ
エチルセルロースなどの有機バインダにTiBaO3などを分
散させてなる高誘電体層（絶縁体層）、ZnSなどのけい
光体粒子をシアノエチルセルロースなどの有機バインダ
に分散させて成る発光体層および透明なフイルムに被着
支持されたIn2O3などからなる透明電極層を順次一体的
に積層して膜状の分散型EL素子本体を先ず構成する。次
いでこの分散型EL素子本体を100℃、48Hr.乾燥脱水後、
たとえば、ポリクロロトリフルオロエチレンフイルムな
ど透湿性の小さいフイルムで前記分散型EL素子本体の両
主面を挟み、分散型EL素子本体周縁の食み出し部を互い
に熱圧着し、封止して分散型EL素子を製造することが知
られている。この種の分散型EL素子は、可撓性を有して
おり取扱易いばかりでなく、比較的低コストで得られる
ことなどから、たとえば、液晶表示素子乃至液晶表示装
置のバックライトなどとしての使用に多くの関心が寄せ
られている。ところで、上記分散型EL素子においては、
発光体層中のけい光体粒子の吸湿によって輝度劣化（寿
命低下）が起こるため、上記のように透湿性の小さいフ
イルムで被覆封止したり、たとえば、第１図に構成の一
部を断面的に示すように、前記両電極層の外側にたとえ
ば６−ナイロン（商品名）など吸水性のポリアミドフイ
ルムをさらに配設し、たとえば、軟化点130℃のポリア
ミド樹脂などの接着剤を用い電極層側に接合一体化させ
た後、たとえば100℃で乾燥脱水処理してから、前記パ
ッケージングする構成を採っている。なお、第１図にお
いて、１は背面電極層、２は絶縁体層、３は発光体層、
４は透明フイルム4aに被着形成された透明電極層、5a,5
bは前記電極層1,4側にそれぞれ接着一体化された吸水性
フイルム、６はパッケージングしている透湿性の小さい
フイルムである。(Prior art) For example, on a back electrode layer made of Al foil or the like, a high dielectric layer (insulator layer) in which TiBaO 3 or the like is dispersed in an organic binder such as cyanoethyl cellulose, or phosphor particles such as ZnS. the by the transparent electrode layer made of in 2 O 3 that are deposited supported phosphor layer and a transparent film made by dispersing the organic binder sequentially integrally laminated such cyanoethyl cellulose membranous dispersion-type EL element The main body is constructed first. Next, the dispersion-type EL element body was dried at 100 ° C.
For example, both main surfaces of the dispersion-type EL element body are sandwiched between films having small moisture permeability such as a polychlorotrifluoroethylene film, and the protruding portions of the periphery of the dispersion-type EL element body are thermocompression-bonded to each other, sealed and dispersed. It is known to manufacture type EL devices. This type of dispersion type EL element is flexible and easy to handle, and can be obtained at a relatively low cost. For example, it is used as a liquid crystal display element or a backlight of a liquid crystal display device. There is much interest in By the way, in the above dispersion type EL element,
Since the luminance of the phosphor particles in the luminous body layer deteriorates due to the moisture absorption (decrease of the life), the luminous body layer may be covered and sealed with a film having a small moisture permeability as described above. As shown in the figure, a water-absorbing polyamide film such as 6-nylon (trade name) is further disposed outside the two electrode layers, and an adhesive such as a polyamide resin having a softening point of 130 ° C. is used. After the bonding and integration on the side, the package is dried and dehydrated at, for example, 100 ° C., and then packaged. In FIG. 1, 1 is a back electrode layer, 2 is an insulator layer, 3 is a light emitting layer,
Reference numeral 4 denotes a transparent electrode layer formed on the transparent film 4a, 5a and 5
b is a water-absorbing film bonded and integrated to the electrode layers 1 and 4, respectively, and 6 is a packaged small moisture-permeable film.
（発明が解決しようとする課題） しかし、上記構成の分散型EL素子の場合には、ソリな
どの発生が認められ、実用上十分満足しうるものとは言
いがたい。たとえば、第１図に示すように構成して防湿
効果をさらに図った場合、前記分散型EL素子の発光面が
曲面化して平面パネルとしての機能が損われる場合がし
ばしば認められる。この原因について、本発明者らはい
ろいろ検討した結果次のようなことを見出した。つま
り、上記分散型EL素子の構成にあたっては、先ず分散型
EL素子本体（吸水性フイルムを配設した状態）を構成
し、所要の乾燥雰囲気下に収納,,乾燥しておき順次取出
し、透湿性の小さいフイルムで挟持させ端縁部をたとえ
ば、搬送速度10〜100cm/min.程度で連続的に搬送しなが
ら、加圧５〜15kg/cm2程度．加熱温度100〜180℃程度で
所要のパッケージングを行つている。しかし、この乾燥
段階で、前記背面電極層（Al箔などの金属層）が熱膨脹
するのに対して、透明電極層が熱収縮性を示すため、前
記乾燥する工程で、ソリを生じ易く、したがって、平面
性の損われたELパネルがしばしば構成されることにな
り、所望どうりの面発光パネルとしての機能を十分に発
揮し得ない。(Problems to be Solved by the Invention) However, in the case of the dispersion-type EL element having the above-described configuration, warpage or the like is observed, and it cannot be said that the element is sufficiently satisfactory in practical use. For example, when the structure shown in FIG. 1 is used to further improve the moisture proof effect, it is often recognized that the light emitting surface of the dispersion type EL element is curved and the function as a flat panel is impaired. The present inventors have conducted various studies on the cause and found the following. In other words, in the construction of the dispersion type EL device,
The EL element body (with the water-absorbing film disposed) is housed in a required dry atmosphere, dried and taken out sequentially, sandwiched by a film having a small moisture permeability, and the edge is moved at a transport speed of, for example, 10%. Pressure is about 5 to 15 kg / cm 2 while continuously transporting at about 100 to 100 cm / min. The required packaging is performed at a heating temperature of about 100 to 180 ° C. However, in this drying step, the back electrode layer (metal layer such as Al foil) thermally expands, while the transparent electrode layer shows heat shrinkage, so that the drying step is liable to warp. In addition, an EL panel with impaired flatness is often formed, and the function as a desired surface emitting panel cannot be sufficiently exhibited.
［発明の構成］ （課題を解決するための手段） 本発明は上記事情に対処してなされたもので、両電極
層間に介在させた絶縁体層および発光体層の有機バイン
ダとして前記乾燥温度よりも軟化温度が高い樹脂を用
い、また前記吸水性フイルムの接着には前記乾燥温度よ
りも軟化温度の低い有機樹脂を用いることを骨子とし、
これを透湿性の小さいフイルムで挟持させ端縁部を圧着
封止して所要のパッケージングを行った際の前記両電極
層における熱膨脹、熱収縮を緩和させソリなどのない、
平面性の良好な（面発光性良好）分散型EL素子が容易に
得られる。[Constitution of the Invention] (Means for Solving the Problems) The present invention has been made in view of the above circumstances, and has an organic binder for an insulator layer and a light emitting layer interposed between both electrode layers. Also using a resin having a high softening temperature, and for the bonding of the water-absorbing film, the main point is to use an organic resin having a softening temperature lower than the drying temperature,
The thermal expansion and thermal contraction in the two electrode layers at the time of performing required packaging by sandwiching this with a moisture-permeable small film and compressing and sealing the edge portions to eliminate warping and the like,
A dispersion-type EL element having good flatness (good surface emission) can be easily obtained.
（作用） 上記のごとく本発明に係る分散型EL素子の製造方法に
おいては、吸水性フイルムの接着一体化には軟化温度の
比較的低い樹脂を接着剤として用い、絶縁体層および発
光体層のバインダには、軟化温度の比較的高い樹脂を用
いている。つまり、本発明方法によれば、背面電極層と
絶縁体層との接着は絶縁体層中の軟化点の比較的高いバ
インダでなされ、また、透明電極層と発光体層との接着
は絶縁体層中の軟化点の比較的高いバインダでなされ
る。一方、前記背面電極層や透明電極層と吸水性フイル
ム層との接着は軟化点の比較的低い樹脂によってなされ
るため、吸水性フイルムを含めて分散型EL素子本体を乾
燥脱水処理した段階もしくはパッケージングしたとき、
分散型EL素子本体の吸水性フイルムは比較的自由度があ
り（接着剤の軟化による）、その熱収縮などの影響も背
面電極層や透明電極層におよばなくなる。したがって、
前記パッケージングして成る分散型EL素子は、発光体層
中のけい光体粒子の劣化予防と言う本来の機能を十分か
つ、確実に果すとともに、ソリなどの発生も全面的にな
くなる。(Operation) As described above, in the method for manufacturing a dispersion-type EL element according to the present invention, a resin having a relatively low softening temperature is used as an adhesive for bonding and integrating a water-absorbing film, and an insulating layer and a luminescent layer are formed. For the binder, a resin having a relatively high softening temperature is used. That is, according to the method of the present invention, the bonding between the back electrode layer and the insulator layer is performed with a binder having a relatively high softening point in the insulator layer, and the bonding between the transparent electrode layer and the luminescent layer is performed using the insulator. This is done with a binder having a relatively high softening point in the layer. On the other hand, since the adhesion between the back electrode layer or the transparent electrode layer and the water-absorbing film layer is made by a resin having a relatively low softening point, the dispersion-type EL element body including the water-absorbing film is dried or dehydrated or packaged. When
The water-absorbing film of the dispersion-type EL element body has a relatively high degree of freedom (due to the softening of the adhesive), and its influence such as heat shrinkage does not reach the back electrode layer or the transparent electrode layer. Therefore,
The packaged dispersion type EL element sufficiently and surely fulfills the original function of preventing the deterioration of the phosphor particles in the light emitting layer, and eliminates the occurrence of warpage or the like entirely.
（実施例） 以下本発明の実施例を説明する。(Example) Hereinafter, an example of the present invention will be described.
先ず、透明性の絶縁フイルムたとえば、ポリエステル
フイルム（透明電極層支持体）の一主面に蒸着、塗布法
などによって透明電極層を形成する。次いで上記形成し
た透明電極層面上に、有機バインダたとえば、軟化点14
0℃のシアノエチルセルロースに蛍光体粒子（平均粒径2
0〜30μ程度）を分散混合して成るペーストを塗布乾燥
して厚さ30〜70μ程度の発光体層を被着形成し、この発
光体層上に、有機バインダたとえば、軟化点140℃のシ
アノエチルセルロースにたとえばTiBaO3を分散混合して
成るペーストを塗布乾燥して厚さ10〜30μ程度の絶縁体
層を被着形成した。しかる後、前記絶縁体層上に厚さ80
μ程度のAl箔（背面電極層）を載置し、さらにこのAl箔
（背面電極層）面上に軟化点90℃の接着剤を使用し吸水
性フイルムたとえば、軟化点130℃の６−ナイロンフイ
ルムを張合わせるとともに、前記ポリエステルフイルム
（透明電極層支持体）の他主面上に前記軟化点90℃の混
合樹脂を接着剤として吸水性フイルムたとえば、軟化点
130℃の６−ナイロンフイルムを張合わせて分散型EL素
子本体を構成した。なお、上記では説明しなかったが、
前記透明電極層および背面電極層にはそれぞれ所要の給
電用リード線が導出配設してある。上記のごとくして分
散型EL素子本体を構成した後、この分散型EL素子本体を
たとえば、100℃で48Hr加熱してから順次取出し、その
分散型EL素子本体（前記導出した給電用リード線を含
め）を透湿性の小さいフイルムたとえば、厚さ200μ程
度のポリクロロトリフルオルエチレンフイルムで両面か
ら挟み、たとえば、搬送速度10〜100cm/min.程度で連続
的に搬送しながら、加圧５〜15kg/cm2程度．加熱温度10
0〜180℃程度で所要のパッケージングを行う。すなわ
ち、前記分散型EL素子本体を両面から挟んだポリクロロ
トリフルオルエチレンフイルムの分散型EL素子本体から
食み出した部分乃至領域の対接した面を互いに熱溶着さ
せて一体化し封止する。このように分散型EL素子本体を
パッケージングしてから、要すれば、給電用リード線の
所要部について前記パッケージングフイルムを一部切除
したり、パッケージングされた分散型EL素子を個々に切
離すことによって所望の分散型EL素子が得られる。First, a transparent electrode layer is formed on one main surface of a transparent insulating film, for example, a polyester film (transparent electrode layer support) by vapor deposition, coating, or the like. Next, an organic binder such as a softening point 14
Phosphor particles (average particle size 2
(Approximately 0-30 μm) is applied and dried to form a luminous layer having a thickness of approximately 30-70 μm. An organic binder such as cyano having a softening point of 140 ° C. is formed on the luminous layer. A paste obtained by dispersing and mixing, for example, TiBaO 3 in ethyl cellulose was applied and dried to form an insulator layer having a thickness of about 10 to 30 μm. Thereafter, a thickness of 80 is formed on the insulator layer.
An Al foil (back electrode layer) of about μ is placed, and an adhesive having a softening point of 90 ° C. is used on the surface of the Al foil (back electrode layer) to absorb water, for example, 6-nylon having a softening point of 130 ° C. While adhering the film, a water-absorbing film such as a softening point is formed on the other main surface of the polyester film (transparent electrode layer support) using the mixed resin having a softening point of 90 ° C. as an adhesive.
A dispersion-type EL element body was formed by laminating a 6-nylon film at 130 ° C. Although not described above,
Necessary power supply leads are led out and arranged on the transparent electrode layer and the back electrode layer, respectively. After the dispersion type EL element main body is formed as described above, the dispersion type EL element main body is heated, for example, at 100 ° C. for 48 hours, and then sequentially taken out. ) Is sandwiched between both sides by a film having a small moisture permeability, for example, a polychlorotrifluoroethylene film having a thickness of about 200 μm, for example, while continuously transporting at a transport speed of about 10 to 100 cm / min. / cm 2 or so. Heating temperature 10
Perform required packaging at about 0 to 180 ° C. That is, the opposing surfaces of the portions or regions of the polychlorotrifluoroethylene film protruding from the dispersion EL element body sandwiching the dispersion EL element body from both sides are integrally welded and sealed together. After packaging the distributed EL element body in this way, if necessary, the packaging film may be partially cut off at required portions of the power supply lead wires, or the packaged distributed EL elements may be individually cut. By separating, a desired dispersion type EL element is obtained.
なお、上記実施例では、背面電極層をAl箔としたが、
たとえばAl蒸着層としポリエステルフイルムなどに担持
させた構成としてもよい。また、前記絶縁体層および発
光体層の有機バインダとしては、シアノエチルセルロー
スの代りにたとえば、シアノエチル化プルラン、シアノ
エチル化サッカロース、フッ素系ゴムなどが使用され
る。一方、吸水性フイルムを電極層側に接着一体化する
ための接着剤としては、たとえば、熱可塑性ポリエステ
ル、酢酸ビニル、塩化ビニル−酢酸ビニル共重合体を使
用し得る。In the above embodiment, the back electrode layer was made of Al foil.
For example, a configuration in which an Al vapor-deposited layer is supported on a polyester film or the like may be employed. Further, as the organic binder of the insulator layer and the light emitting layer, for example, cyanoethylated pullulan, cyanoethylated saccharose, fluorine-based rubber or the like is used instead of cyanoethylcellulose. On the other hand, as an adhesive for bonding and integrating the water-absorbing film to the electrode layer side, for example, thermoplastic polyester, vinyl acetate, vinyl chloride-vinyl acetate copolymer can be used.
［発明の効果］ 上記のごとく、本発明によれば、分散型EL素子の製造
において、防湿のため特に配設した吸水性フイルムの接
着には、パッケージングに当たっての乾燥温度よりも軟
化点の低い有機接着剤が用いられ、また、絶縁体層およ
び発光体層の有機バインダとしては前記乾燥温度よりも
軟化点の高いものが用いられる。かくして、前記吸水性
フイルムを配設した状態での乾燥工程においても、背面
電極層や透明電極層における熱収縮，熱膨脹などが適宜
緩和乃至吸収などされて平面性の良好な分散型EL素子が
常に得られる。たとえば、絶縁体層および発光体層有機
バインダとして軟化点140℃のシアノエチルセルロース
を用い、吸水性フイルムの接着剤として軟化点140℃の
ポリアミド樹脂（比較例）または軟化点90℃の樹脂（実
施例）を用い、それぞれ構成した分散型EL素子本体をパ
ッケージングに先だって100℃,48Hr乾燥処理したとこ
ろ、比較例の場合は平面性が損われていた（平面保持な
し）のに対し、本発明に係る分散型EL素子本体（実施
例）の場合は平面を保持しており、また、パッケージン
グして製品化した状態でも、比較例の場合大きなソリが
生じたのに対し、実施例の場合はほとんどソリも認めら
れなかった。このソリの発生が防止されることは、たと
えば、液晶表示素子のバックライトとして分散型EL素子
を使用した場合も、全体的に一様な明るさが得られるこ
とになり、液晶表示素子の機能品質の向上に寄与しうる
点でも有効である。[Effects of the Invention] As described above, according to the present invention, in the production of a dispersion-type EL element, the bonding of a water-absorbing film particularly arranged for moisture prevention has a softening point lower than the drying temperature at the time of packaging. An organic adhesive is used, and an organic binder having a softening point higher than the drying temperature is used as the organic binder of the insulator layer and the luminescent layer. Thus, even in the drying step in a state where the water-absorbing film is provided, the dispersed EL element having good flatness is always obtained by appropriately reducing or absorbing the heat shrinkage and the thermal expansion in the back electrode layer and the transparent electrode layer. can get. For example, cyanoethylcellulose having a softening point of 140 ° C. is used as an organic binder for an insulator layer and a light emitting layer, and a polyamide resin having a softening point of 140 ° C. (comparative example) or a resin having a softening point of 90 ° C. (Example) is used as an adhesive for a water-absorbing film. ), And the dispersion EL element main body constituted was dried at 100 ° C. for 48 hours prior to packaging. In the comparative example, the flatness was impaired (no flatness was maintained). In the case of such a dispersion-type EL element body (Example), a flat surface was maintained, and even in a state of being packaged and commercialized, a large warp occurred in the Comparative Example, whereas in the case of the Example, Almost no sled was found. Prevention of this warpage means that, for example, even when a dispersion-type EL element is used as a backlight of a liquid crystal display element, uniform brightness can be obtained as a whole, and the function of the liquid crystal display element It is also effective in that it can contribute to quality improvement.
第１図は分散型EL素子の構成の一部を示す断面図であ
る。 １……背面電極層 ２……絶縁体層 ３……発光体層 ４……透明電極層 5a,5b……吸水性フイルム ６……パッケージングフイルムFIG. 1 is a cross-sectional view showing a part of the configuration of the dispersion type EL element. DESCRIPTION OF SYMBOLS 1 ... Back electrode layer 2 ... Insulator layer 3 ... Light emitting layer 4 ... Transparent electrode layer 5a, 5b ... Water-absorbing film 6 ... Packaging film
Claims (1)
明電極層が順次積層されて成る分散型EL素子本体の両主
面側に吸水性フィルムを配設接着し、加熱乾燥を施して
脱水後、前記分散型EL素子本体およびその両主面上に配
設した吸水性フィルムを透湿性の小さいパッケージング
フィルムで一体的に被覆封止する分散型EL素子の製造方
法において、 吸水性フィルム層の接着剤として、前記加熱乾燥の温度
よりも軟化点が低く、かつ前記絶縁体層および発光体層
のバインダとして、前記加熱乾燥の温度よりも軟化点が
高い樹脂を用いることを特徴とする分散型EL素子の製造
方法。1. A water-absorbing film is disposed and bonded to both main surfaces of a dispersion-type EL element body in which a back electrode layer, an insulator layer, a light-emitting layer and a transparent electrode layer are sequentially laminated, and heated and dried. After dehydration, the method for manufacturing a dispersion-type EL element, in which the dispersion-type EL element body and the water-absorbing film disposed on both main surfaces thereof are integrally covered and sealed with a packaging film having low moisture permeability, As an adhesive for the film layer, a resin having a softening point lower than the heating and drying temperature, and using a resin having a softening point higher than the heating and drying temperature as a binder for the insulator layer and the luminescent layer. Manufacturing method of dispersed EL device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1017251A JP2774542B2 (en) | 1989-01-26 | 1989-01-26 | Manufacturing method of dispersion type EL element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1017251A JP2774542B2 (en) | 1989-01-26 | 1989-01-26 | Manufacturing method of dispersion type EL element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02197074A JPH02197074A (en) | 1990-08-03 |
| JP2774542B2 true JP2774542B2 (en) | 1998-07-09 |
Family
ID=11938732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1017251A Expired - Fee Related JP2774542B2 (en) | 1989-01-26 | 1989-01-26 | Manufacturing method of dispersion type EL element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2774542B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AUPS327002A0 (en) * | 2002-06-28 | 2002-07-18 | Kabay & Company Pty Ltd | An electroluminescent light emitting device |
| JP5351559B2 (en) * | 2008-05-22 | 2013-11-27 | リンテック株式会社 | Sheet-like luminescent member, electroluminescent sheet, method for producing sheet-like luminescent member, and method for producing electroluminescent sheet |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5113257U (en) * | 1974-07-17 | 1976-01-30 |
-
1989
- 1989-01-26 JP JP1017251A patent/JP2774542B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02197074A (en) | 1990-08-03 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |