JPH0533510B2 - - Google Patents
Info
- Publication number
- JPH0533510B2 JPH0533510B2 JP62156750A JP15675087A JPH0533510B2 JP H0533510 B2 JPH0533510 B2 JP H0533510B2 JP 62156750 A JP62156750 A JP 62156750A JP 15675087 A JP15675087 A JP 15675087A JP H0533510 B2 JPH0533510 B2 JP H0533510B2
- Authority
- JP
- Japan
- Prior art keywords
- panel
- thin
- thin film
- film
- black resin
- 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 - Lifetime
Links
- 229920005989 resin Polymers 0.000 claims description 29
- 239000011347 resin Substances 0.000 claims description 29
- 239000011521 glass Substances 0.000 claims description 26
- 239000010409 thin film Substances 0.000 claims description 25
- 239000000758 substrate Substances 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 7
- 230000001681 protective effect Effects 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 125000006850 spacer group Chemical group 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 239000005357 flat glass Substances 0.000 description 16
- 239000000853 adhesive Substances 0.000 description 13
- 230000001070 adhesive effect Effects 0.000 description 13
- 239000010410 layer Substances 0.000 description 8
- 239000011324 bead Substances 0.000 description 5
- 238000005507 spraying Methods 0.000 description 4
- 239000012790 adhesive layer Substances 0.000 description 3
- 230000001680 brushing effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 238000007650 screen-printing Methods 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000004840 adhesive resin Substances 0.000 description 1
- 229920006223 adhesive resin Polymers 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000005388 borosilicate glass Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005401 electroluminescence Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 239000005394 sealing glass Substances 0.000 description 1
- SBIBMFFZSBJNJF-UHFFFAOYSA-N selenium;zinc Chemical compound [Se]=[Zn] SBIBMFFZSBJNJF-UHFFFAOYSA-N 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 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、交流電界の印加によつてEL
（ElectroLuminescence）発光を呈する薄膜EL素
子を使用した薄膜ELパネルに関し、特に背面板
と封止用ガラスキヤツプの接着部が改良された薄
膜ELパネルに関するものである。[Detailed Description of the Invention] <Industrial Application Field> The present invention provides EL
The present invention relates to a thin-film EL panel using a thin-film EL element that emits light (ElectroLuminescence), and in particular to a thin-film EL panel with an improved bond between the back plate and the sealing glass cap.
〈発明の概要〉
本発明は、上記薄膜EL素子の保護用流体が充
填され薄膜ELパネルに於いて、前記保護用流体
をガラスキヤツプにて封止する際、前記ガラスキ
ヤツプがスペーサが混在された黒色系の樹脂によ
り接着されていることにより、接着層の厚みを均
一にし樹脂の色を保持したまま、作業性が飛躍的
に改善するものである。<Summary of the Invention> The present invention provides a thin-film EL panel filled with a protective fluid for the thin-film EL element, in which when the protective fluid is sealed with a glass cap, the glass cap is mixed with a spacer. By adhering with a black resin, the thickness of the adhesive layer is made uniform and the color of the resin is maintained, while workability is dramatically improved.
〈従来の技術〉
一般に薄膜EL素子は第２図に示すように、ガ
ラス基板１と、この上に順次積層された透明電極
２、第１誘電体層３、発光層４、第２誘電体層５
及び背面電極６を有し、前記透明電極２と背面電
極６は互いに直角をなす方向に形成されている。
透明電極２はI.T.O（Insium Tin Oxide）等から
なり、背面電極６はアルミニウム等からなる。前
記発光層４は例えばZnS，ZnSe等の半導体材料
にて形成されており、特にMnを発光センターと
して添加したZnSでは、実用上十分な輝度が得ら
れている。また、第１誘電体層３及び第２誘電体
層５はY2O3，TiO2，Ta2O5，Si3N4，SiO2，
SiON，Al2O3等が知られており、特にSi3N4，
SiO2，SiON及びAl2O3からなる複合誘電体を用
いることにより、実用的な薄膜EL素子の実現が
可能である。<Prior art> Generally, a thin film EL device has a glass substrate 1, a transparent electrode 2, a first dielectric layer 3, a light emitting layer 4, and a second dielectric layer laminated in sequence on the glass substrate 1, as shown in FIG. 5
and a back electrode 6, and the transparent electrode 2 and the back electrode 6 are formed in directions perpendicular to each other.
The transparent electrode 2 is made of ITO (Insium Tin Oxide) or the like, and the back electrode 6 is made of aluminum or the like. The light-emitting layer 4 is formed of a semiconductor material such as ZnS or ZnSe, and in particular, ZnS doped with Mn as a light-emitting center provides sufficient brightness for practical use. Moreover, the first dielectric layer 3 and the second dielectric layer 5 are made of Y 2 O 3 , TiO 2 , Ta 2 O 5 , Si 3 N 4 , SiO 2 ,
SiON, Al 2 O 3, etc. are known, especially Si 3 N 4 ,
By using a composite dielectric consisting of SiO 2 , SiON and Al 2 O 3 , it is possible to realize a practical thin film EL device.
このような薄膜EL素子は、透明電極２と背面
電極６に交流電源を接続し、両電極２，６間に交
流電圧を印加して、発光開始電圧以上の電圧で出
る発光層４からの光をガスラ基板１側から取り出
すものである。 Such a thin film EL element is manufactured by connecting an AC power source to the transparent electrode 2 and the back electrode 6, applying an AC voltage between both electrodes 2 and 6, and emitting light from the light emitting layer 4 at a voltage higher than the emission starting voltage. is taken out from the glass substrate 1 side.
さらにこのような薄膜EL素子は電極２，６の
引き出し部を除いて背面ガラス板７によつて封止
される。この背面ガラス板７と薄膜EL素子を形
成したガラス基板１との間の空間には絶縁オイル
８が注入され、これにより実用上十分な耐湿性を
有する薄膜ELパネルが得られる。 Further, such a thin film EL element is sealed with a rear glass plate 7 except for the lead-out portions of the electrodes 2 and 6. Insulating oil 8 is injected into the space between the back glass plate 7 and the glass substrate 1 on which the thin film EL elements are formed, thereby obtaining a thin film EL panel having moisture resistance sufficient for practical use.
第３図は、従来例を示す薄膜ELパネルの構成
断面図である。 FIG. 3 is a cross-sectional view of a conventional thin film EL panel.
第３図において、薄膜EL素子９を収納する如
く皿状の背面ガラス板７がガラス基板１上に重畳
され、その内部間隙に薄膜EL素子９が内蔵され
る。ガラス基板１と背面ガラス板７の接合部は光
硬化性樹脂、エポキシ樹脂等の接着剤で密封され
ている。背面ガラス板７としてはソーダガラス、
ホウケイ酸ガラス等が使用され、EL素子構造部
の収納部分がサンドエツチング等により深さ１mm
程度に凹陥成形されている。凹陥成形領域の隅部
１箇所には流体注入用の注入孔１８が形成され、
該注入孔１８より絶縁性保護用流体８、例えばシ
リコーンオイル等が内部へ注入される。注入操作
が完了すると、注入孔１８をInO3ボール等にて
仮封止を行ない、完全に封止を行なう為エポキシ
系樹脂、光硬化性樹脂等から成る樹脂接着剤１０
により平板ガラスキヤツプ１１を貼り付ける二重
封止構造とする。 In FIG. 3, a dish-shaped rear glass plate 7 is superimposed on the glass substrate 1 so as to accommodate the thin film EL element 9, and the thin film EL element 9 is housed in the internal gap thereof. The joint between the glass substrate 1 and the rear glass plate 7 is sealed with an adhesive such as a photocurable resin or an epoxy resin. The back glass plate 7 is soda glass,
Borosilicate glass, etc. is used, and the storage part of the EL element structure is sand-etched to a depth of 1 mm.
It is slightly concavely molded. An injection hole 18 for fluid injection is formed at one corner of the concave molding area,
Insulating protective fluid 8, such as silicone oil, is injected into the interior through the injection hole 18. When the injection operation is completed, the injection hole 18 is temporarily sealed with an InO 3 ball, etc., and in order to completely seal it, a resin adhesive 10 made of epoxy resin, photocurable resin, etc. is applied.
This creates a double sealing structure in which the flat glass cap 11 is attached.
またELパネルのコントラストを向上させる為
予じめ背面ガラス板７上には黒色系樹脂１２が印
刷、スプレー方式等により塗布されているが、
（これは平板ガラスキヤツプ１１による封止前、
封止後どちらでも良い。）平板ガラスキヤツプ１
１を貼り付ける樹脂接着剤１０が透光性樹脂であ
る為、注入孔１８の封止後、平板ガラス１１上
に、黒色系樹脂１３がハケ塗り、スプレー塗布さ
れる。 In order to improve the contrast of the EL panel, a black resin 12 is applied on the rear glass plate 7 in advance by printing, spraying, etc.
(This is before sealing with flat glass cap 11,
Either is fine after sealing. ) Flat glass cap 1
Since the resin adhesive 10 to which 1 is attached is a translucent resin, after the injection hole 18 is sealed, the black resin 13 is applied by brushing or spraying onto the flat glass 11.
〈発明が解決しようとする問題点〉
ところが、上記第３図に示す様な構造では、平
板ガラスキヤツプ１１を貼り付ける樹脂接着剤１
０と平板ガラスキヤツプをカバーする黒色系樹脂
１３の両方が必要であり、また樹脂接着材１０を
黒色系樹脂としても、厚みが薄いので黒色系樹脂
中の染料が分散し、透光性となつてしまつた。<Problems to be Solved by the Invention> However, in the structure shown in FIG.
0 and the black resin 13 that covers the flat glass cap are required.Also, even if the resin adhesive 10 is a black resin, since the thickness is thin, the dye in the black resin will disperse and become translucent. It was.
本発明は、上記点に鑑みて為されたものであ
り、簡単な構成で薄膜ELパネルの背面からの遮
光性を確保するとともに、製造工程における作業
性を向上させることを目的とするものである。 The present invention has been made in view of the above points, and aims to ensure light shielding from the back side of a thin-film EL panel with a simple configuration and to improve workability in the manufacturing process. .
〈問題を解決する為の手段〉
本発明は、薄膜ELパネルを構成する平板ガラ
スキヤツプを貼り付ける樹脂接着剤に黒色系の樹
脂接着剤を用い、かつ該接着剤にスペーサーを混
在させる事により、接着層の厚みを均一とし黒色
系色を保持したままで接着を完了させるものであ
る。<Means for solving the problem> The present invention uses a black resin adhesive as the resin adhesive for pasting the flat glass cap constituting the thin film EL panel, and by mixing a spacer with the adhesive, The thickness of the adhesive layer is made uniform, and the adhesion is completed while maintaining the blackish color.
〈作用〉
上記の方式により、背面からの遮光性を確保す
るとともに、従来平板ガラスキヤツプ接着作業及
び平板ガラスキヤツプをカバーする黒色系樹脂塗
布作業の２回の塗布・硬化作業が必要であつた
が、今回の方式により作業１回となり作業性が飛
躍的に向上する。<Function> The above method not only ensures light-shielding properties from the back side, but also requires two coating and curing operations: gluing the flat glass cap and applying black resin to cover the flat glass cap. With this method, the work is done only once, and work efficiency is dramatically improved.
〈実施例〉
以下、図面を用いて本発明の一実施例を詳細に
説明する。<Example> Hereinafter, an example of the present invention will be described in detail using the drawings.
第１図は本発明の一実施例を示すEL表示パネ
ルの拡大断面図である。なお、第３図と同符号の
ものは同一機能をもつものとする。 FIG. 1 is an enlarged sectional view of an EL display panel showing one embodiment of the present invention. Components with the same symbols as in FIG. 3 have the same functions.
第１図において、背面ガラス板７上にはスクリ
ーン印刷、スプレー、ハケ塗り等で黒色系樹脂１
２が塗布されている。この黒色系樹脂１２は基板
１と背面ガラス板７を貼り合わせる前にスクリー
ン印刷で塗布するのが最も作業性、信頼性面で好
ましいが、平板ガラスキヤツプ１１を貼り付けた
後、スプレー、ハケ塗り等で塗布しても同様の効
果が得られる。またこの黒色系樹脂１２は通常平
板ガラスキヤツプ貼付け部を除いて塗布される
が、これは平板ガラスキヤツプ部の樹脂層の界面
の数が増え、信頼性面で劣ることに起因する。 In Figure 1, a black resin 1 is applied on the rear glass plate 7 by screen printing, spraying, brushing, etc.
2 is applied. It is most preferable in terms of workability and reliability to apply this black resin 12 by screen printing before pasting the substrate 1 and the rear glass plate 7 together, but after pasting the flat glass cap 11, it can be applied by spraying or brushing. The same effect can be obtained by applying the same. Further, the black resin 12 is usually applied except for the area where the flat glass cap is attached, but this is because the number of interfaces in the resin layer of the flat glass cap increases, resulting in poor reliability.
次に絶縁性保護用流体８を注入、仮封止した
後、黒色系の樹脂接着剤１４を背面ガラス板７上
或いは平板ガラスキヤツプ１１上に塗布し、平板
ガラスキヤツプ１１の貼り付け部に数ケのガラス
ビーズ１５（30μｍ程度）を供給し、平板ガラス
キヤツプ１１を貼り付ける。 Next, after injecting the insulating protective fluid 8 and temporarily sealing, a black resin adhesive 14 is applied on the back glass plate 7 or the flat glass cap 11, and several adhesives are applied to the attachment part of the flat glass cap 11. Glass beads 15 (approximately 30 μm) are supplied, and a flat glass cap 11 is attached.
また前記、ガラスビーズ１５は黒色系の樹脂接
着剤１４の中に混合後塗布しても同様の効果が得
られ、大きさは10μｍ以上であれば黒色系の色を
保持した状態での接着が可能である。 Furthermore, the same effect can be obtained even if the glass beads 15 are mixed and applied in the black resin adhesive 14, and if the size is 10 μm or more, the adhesive can maintain the black color. It is possible.
尚、本発明はスペーサとしてガラスビーズ１５
を用いたが、ガラスフアイバー、アルミナ等の無
機物の他、プラスチツクビーズ等を用いても良
い。また平板ガラスキヤツプ１１の接着用樹脂の
色としては黒色系が理想的であるが、その他光吸
収性が大きく、明度が低い様な、EL素子が発光
するに際してコントラストが向上する樹脂であれ
ば、いかなる色でも用いることができる。 Note that the present invention uses glass beads 15 as spacers.
However, in addition to inorganic materials such as glass fiber and alumina, plastic beads and the like may also be used. The color of the adhesive resin for the flat glass cap 11 is ideally black, but other resins with high light absorption and low brightness that improve the contrast when the EL element emits light may be used. Any color can be used.
〈発明の効果〉
以上のように本発明によれば、ELパネルを封
止する際、黒色系の樹脂接着剤とスペーサーを用
いることにより、接着層の厚みが均一となり、樹
脂の色を保持しつつ封止ができるので充分な遮光
ができ、さらに作業性が大幅に改善される有用な
薄膜ELパネルを提供できる。<Effects of the Invention> As described above, according to the present invention, by using a black resin adhesive and a spacer when sealing an EL panel, the thickness of the adhesive layer becomes uniform and the color of the resin is maintained. It is possible to provide a useful thin-film EL panel that can be sealed with sufficient light shielding and greatly improves workability.
第１図は本発明の一実施例を示す薄膜ELパネ
ルの断面図、第２図は薄膜ELパネルの構造を示
す断面図、第３図は従来の薄膜ELパネルの構造
を示す断面図である。
１……ガラス基板、７……背面ガスラ板、９…
…薄膜EL素子、１１……平板ガラスキヤツプ、
１２……黒色系の樹脂、１４……黒色系の樹脂接
着剤、１５……ガラスビーズ（スペーサー）。
Fig. 1 is a sectional view of a thin film EL panel showing an embodiment of the present invention, Fig. 2 is a sectional view showing the structure of a thin film EL panel, and Fig. 3 is a sectional view showing the structure of a conventional thin film EL panel. . 1...Glass substrate, 7...Back glass plate, 9...
...thin film EL element, 11...flat glass cap,
12...Black resin, 14...Black resin adhesive, 15...Glass beads (spacer).
Claims (1)
に、薄膜EL素子と該薄膜EL素子に対する絶縁性
保護流体とを収納し、前記背面板の前記絶縁性保
護流体の注入孔にガラスキヤツプを被冠して封止
してなる薄膜ELパネルにおいて、 前記背面板上に黒色系樹脂層を形成することと
もに、前記ガラスキヤツプはスペーサを混在させ
た黒色系の樹脂接着剤によつて前記注入孔に接着
されてなることを特徴とする薄膜ELパネル。[Scope of Claims] 1. A thin-film EL element and an insulating protective fluid for the thin-film EL element are housed in an outer package consisting of a translucent front substrate and a back plate, and the insulating protective fluid of the back plate is In a thin film EL panel formed by covering and sealing the injection hole with a glass cap, a black resin layer is formed on the back plate, and the glass cap is bonded with a black resin mixed with a spacer. A thin film EL panel, characterized in that it is bonded to the injection hole with an agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62-156750A JPH012295A (en) | 1987-06-23 | Thin film EL panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62-156750A JPH012295A (en) | 1987-06-23 | Thin film EL panel |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JPS642295A JPS642295A (en) | 1989-01-06 |
| JPH012295A JPH012295A (en) | 1989-01-06 |
| JPH0533510B2 true JPH0533510B2 (en) | 1993-05-19 |
Family
ID=
Also Published As
| Publication number | Publication date |
|---|---|
| JPS642295A (en) | 1989-01-06 |
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