JPH0645066A - High luminance color el panel - Google Patents
High luminance color el panelInfo
- Publication number
- JPH0645066A JPH0645066A JP4218261A JP21826192A JPH0645066A JP H0645066 A JPH0645066 A JP H0645066A JP 4218261 A JP4218261 A JP 4218261A JP 21826192 A JP21826192 A JP 21826192A JP H0645066 A JPH0645066 A JP H0645066A
- Authority
- JP
- Japan
- Prior art keywords
- panel
- color
- base
- insulating film
- transparent electrode
- 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
- 239000000919 ceramic Substances 0.000 claims abstract description 15
- 239000011521 glass Substances 0.000 claims abstract description 10
- 239000000758 substrate Substances 0.000 claims description 23
- 239000005394 sealing glass Substances 0.000 claims description 4
- 229910052814 silicon oxide Inorganic materials 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 abstract description 2
- 238000010030 laminating Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000010408 film Substances 0.000 description 8
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- -1 kappa Chemical compound 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Landscapes
- Electroluminescent Light Sources (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、フルカラーまたはマル
チカラー表示フラットディスプレイに用いられる高輝度
ＥＬディスプレイに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high brightness EL display used for a full color or multi-color display flat display.
【０００２】[0002]
【従来の技術】従来、カラーフィルター方式のＥＬパネ
ルでは、ガラス基板上にカラーフィルターを形成し、そ
の上にＥＬデバイスを構成する各層を成膜していくタイ
プと、背面電極に透明電極を用いて、パネルの裏側から
光を取り出せるようにしたＥＬパネルに、カラーフィル
ターがパターニングされたガラスを貼り合わせるタイプ
があるが、カラーフィルターの耐熱性が低く、ＥＬの製
作工程に耐えられない。また、耐熱性の高い干渉フィル
ターを使用してもパターニングや視野角が問題となるた
め、後者のタイプが有望である。また、通常のＥＬパネ
ルでは、デバイスから取り出せる光には背面金属電極か
らの反射光も含まれている。カラーフィルター貼り合わ
せ方式のカラーＥＬパネルでは基板側第１電極が透明で
ある必要がないので、ここに金属電極を使用し、反射光
を含んだ光をパネルから取り出すことが考えられるが、
ＥＬパネルの代表的な金属電極材料であるアルミニュー
ム、カッパ、モリブデン等ではＥＬ製作中の高温工程で
熱膨張による剥離や絶縁膜と反応して耐圧を下げる等の
問題が生ずる。そのため、高温工程でも問題なく使用で
きる透明電極を基板側第１電極として使用している。2. Description of the Related Art Conventionally, in a color filter type EL panel, a type in which a color filter is formed on a glass substrate and each layer constituting an EL device is formed thereon, and a transparent electrode is used as a back electrode. There is a type in which glass with a patterned color filter is attached to an EL panel that allows light to be extracted from the back side of the panel, but the heat resistance of the color filter is low and it cannot withstand the EL manufacturing process. Also, the latter type is promising because patterning and viewing angle will still be a problem even if an interference filter having high heat resistance is used. In a normal EL panel, the light that can be extracted from the device also includes the reflected light from the back metal electrode. Since it is not necessary for the first electrode on the substrate side to be transparent in the color EL panel of the color filter bonding type, it is conceivable to use a metal electrode here and take out the light including the reflected light from the panel.
Aluminium, kappa, molybdenum, etc., which are typical metal electrode materials for EL panels, have problems such as peeling due to thermal expansion and a reaction with an insulating film to lower the breakdown voltage in a high temperature process during EL fabrication. Therefore, a transparent electrode that can be used without problems even in a high temperature process is used as the substrate-side first electrode.
【０００３】[0003]
【発明が解決しようとする課題】ところが、光を取り出
す側に対向する電極も透明なのでパネルから取り出され
る光は背面に金属電極を使用した通常のＥＬデバイスに
比べ、輝度が約１／２になってしまうという問題があ
る。However, since the electrode facing the light extraction side is also transparent, the light extracted from the panel has a luminance of about 1/2 that of a normal EL device using a metal electrode on the back surface. There is a problem that it will end up.
【０００４】本発明は上記従来の問題点に着目し、高輝
度カラーＥＬパネルに係わり、特には、フルカラー、マ
ルチカラー、表示フラットディスプレイ等のカラーパネ
ルに用いる高輝度ＥＬディスプレイの改良の提供を目的
としている。The present invention focuses on the above-mentioned conventional problems, and relates to a high-brightness color EL panel, and in particular, an object of the invention is to provide an improvement of a high-brightness EL display used for color panels such as full-color, multi-color, and flat display displays. I am trying.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に、本発明の高輝度カラーＥＬパネルでは、表面を研磨
した白色セラミックを基板として用い、その上に、透明
電極と、絶縁膜と、ＺｎＳ：Ｍｎ／ＳｒＳ：Ｃｅ／Ｚｎ
Ｓ：Ｍｎの３層構造からなる発光層と、絶縁膜と、透明
電極とを積層したＥＬパネルと、カラーフィルターがパ
ターニングされたガラス（封止ガラス）を貼り合わせ
る。In order to achieve the above object, in the high brightness color EL panel of the present invention, a white ceramic whose surface is polished is used as a substrate, on which a transparent electrode, an insulating film, and ZnS: Mn / SrS: Ce / Zn
An EL panel in which a light emitting layer having a three-layer structure of S: Mn, an insulating film, and a transparent electrode are laminated, and a glass (sealing glass) on which a color filter is patterned are attached.
【０００６】[0006]
【作用】カラーフィルター貼り合わせ方式のＥＬパネル
では背面電極側から光を取り出すため基板が透明である
必要がない。それで、白色のセラミックを基板に用いる
ことで、セラミック基板表面からの光の反射光を用いる
ことができ、輝度の低下を防ぐことができる。In the EL panel of the color filter bonding type, the substrate does not need to be transparent because light is extracted from the back electrode side. Therefore, by using a white ceramic for the substrate, the reflected light of the light from the surface of the ceramic substrate can be used, and a decrease in brightness can be prevented.
【０００７】[0007]
【実施例】ＥＬデイバイスの基板として、表面を研磨し
た酸化アルミ（Ａｌ２Ｏ３）等の白色セラミックを使用
した場合の効果を調べた。ガラス基板と表面を研磨した
酸化アルミ（Ａｌ２Ｏ３）基板の２種類の基板を用意
し、それぞれの基板上に、厚さ０．１μｍのＩＴＯ透明
電極と、厚さ０．１２μｍのＳｉＯＮ絶縁膜と、厚さ
０．２μｍのＺｎＳ：Ｍｎと厚さ０．８５μｍのＳｒ
Ｓ：Ｃｅと厚さ０．２μｍのＺｎＳ：Ｍｎの３層構造か
らなる発光層と、厚さ０．１２μｍのＳｉＯＮ絶縁膜
と、厚さ０．１５μｍのＩＴＯ透明電極を、順次積層し
たＥＬデバイスを製作した。上記２種類のデバイスの輝
度ー電圧特性を、パルス幅４０μｓｅｃ、周波数６０Ｈ
ｚのパルス波で測定した結果を図２に示す。この結果で
は、セラミック基板を用いたＥＬデバイスの方がガラス
基板を用いたＥＬデバイスよりも１．７倍程度の輝度が
得られている。EXAMPLE The effect of using a white ceramic such as aluminum oxide (Al2O3) whose surface is polished as a substrate of an EL device was examined. Two kinds of substrates, a glass substrate and a surface-polished aluminum oxide (Al2O3) substrate, are prepared, and an ITO transparent electrode having a thickness of 0.1 μm and a SiON insulating film having a thickness of 0.12 μm are provided on each substrate. ZnS: Mn with a thickness of 0.2 μm and Sr with a thickness of 0.85 μm
An EL device in which a light emitting layer having a three-layer structure of S: Ce and ZnS: Mn having a thickness of 0.2 μm, a SiON insulating film having a thickness of 0.12 μm, and an ITO transparent electrode having a thickness of 0.15 μm are sequentially laminated. Was produced. Luminance-voltage characteristics of the above two types of devices, pulse width 40μsec, frequency 60H
The result measured by the pulse wave of z is shown in FIG. According to this result, the EL device using the ceramic substrate has a brightness about 1.7 times higher than that of the EL device using the glass substrate.
【０００８】上記比較実験の結果、ＥＬデバイスの基板
に白色セラミックを用いれば高輝度化に効果のあること
が確認できた。次に、白色セラミック基板を用いて、実
際にカラーＥＬパネルを試作した例を図面を参照して詳
細に説明する。図１は本発明による高輝度カラーＥＬの
構造図である。図１において、高輝度カラーＥＬパネル
１は、表面を研磨したセラミック（酸化アルミ：Ａｌ２
Ｏ３）基板１１上に、ＩＴＯ透明電極１２と、ＳｉＯＮ
絶縁膜１３と、ＺｎＳ：Ｍｎ、ＳｒＳ：Ｃｅ、ＺｎＳ：
Ｍｎの３層構造からなる発光層１４と、ＳｉＯＮ絶縁膜
１５と、ＩＴＯ透明電極１６を、順次積層したＥＬパネ
ル１０と、カラーフィルター２１がパターニングされた
封止ガラス２２を、接着材２３を用いて貼り合わせ、そ
の隙間に、絶縁性流動体２４が封止された構造になって
いる。As a result of the above comparative experiment, it was confirmed that the use of white ceramics for the substrate of the EL device is effective in increasing the brightness. Next, an example in which a color EL panel is actually prototyped using a white ceramic substrate will be described in detail with reference to the drawings. FIG. 1 is a structural diagram of a high brightness color EL according to the present invention. In FIG. 1, a high-brightness color EL panel 1 has a surface-polished ceramic (aluminum oxide: Al 2
O3) ITO transparent electrode 12 and SiON on the substrate 11
Insulating film 13 and ZnS: Mn, SrS: Ce, ZnS:
An EL panel 10 in which a light emitting layer 14 having a three-layer structure of Mn, a SiON insulating film 15, and an ITO transparent electrode 16 are sequentially laminated, a sealing glass 22 having a color filter 21 patterned, and an adhesive 23 are used. The insulating fluid 24 is sealed in the gap.
【０００９】[0009]
【発明の効果】以上説明したように、本発明によれば、
基板側第１電極に、ＥＬ製作中の高温工程でも問題が生
じない透明電極を使用しても、パネルから取り出される
光にはセラミック基板表面からの反射光が含まれるた
め、ガラス基板を用いた同様の構造を持つカラーＥＬパ
ネルに比べ、赤、緑、青の全発光領域にわたって高輝度
のカラーＥＬパネルが得られる。As described above, according to the present invention,
Even if a transparent electrode that does not cause any problems in the high temperature process during EL fabrication is used as the first electrode on the substrate side, the glass substrate is used because the light extracted from the panel includes the reflected light from the surface of the ceramic substrate. As compared with a color EL panel having a similar structure, a color EL panel with high brightness can be obtained over the entire red, green, and blue light emitting regions.
【図１】本発明の薄膜カラーＥＬパネルの構成図であ
る。FIG. 1 is a configuration diagram of a thin film color EL panel of the present invention.
【図２】本発明によるセラミック基板を用いたＥＬデバ
イスと従来のガラス基板を用いたＥＬデバイスの輝度ー
電圧特性を測定した図である。FIG. 2 is a diagram showing measured luminance-voltage characteristics of an EL device using a ceramic substrate according to the present invention and an EL device using a conventional glass substrate.
【符号の説明】 １ 高輝度カラーＥＬパネル １０ ＥＬパネル １１ セラミック基板 １２、１６ 透明電極 １３、１５ 絶縁膜 １４ 発光層 ２１ 封止ガラス[Description of Reference Signs] 1 high-brightness color EL panel 10 EL panel 11 ceramic substrate 12, 16 transparent electrode 13, 15 insulating film 14 light emitting layer 21 sealing glass
Claims (1)
して用いることを特徴とし、その上に、透明電極と、絶
縁膜と、ＺｎＳ：Ｍｎ／ＳｒＳ：Ｃｅ／ＺｎＳ：Ｍｎの
３層構造からなる発光層と、絶縁膜と、透明電極とを積
層したＥＬパネルと、カラーフィルターがパターニング
されたガラス（封止ガラス）を貼り合わせた高輝度カラ
ーＥＬパネル。1. A white ceramic whose surface is polished is used as a substrate, on which a transparent electrode, an insulating film, and a three-layer structure of ZnS: Mn / SrS: Ce / ZnS: Mn are formed. A high-brightness color EL panel in which a layer, an insulating film, and a transparent electrode are laminated, and a glass (sealing glass) on which a color filter is patterned is attached.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4218261A JPH0645066A (en) | 1992-07-24 | 1992-07-24 | High luminance color el panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4218261A JPH0645066A (en) | 1992-07-24 | 1992-07-24 | High luminance color el panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0645066A true JPH0645066A (en) | 1994-02-18 |
Family
ID=16717104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4218261A Pending JPH0645066A (en) | 1992-07-24 | 1992-07-24 | High luminance color el panel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0645066A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030044670A (en) * | 2001-11-30 | 2003-06-09 | 오리온전기 주식회사 | Encapsulation cap of organic electroluminescent device and method for manufacture thereof |
| KR100623223B1 (en) * | 2000-10-14 | 2006-09-11 | 삼성에스디아이 주식회사 | Manufacture method and protect device of organic electroluminescence element |
| KR100637545B1 (en) * | 2001-11-30 | 2006-11-10 | 오리온오엘이디 주식회사 | Encapsulation cap of organic electroluminescent device and method for manufacturing thereof |
-
1992
- 1992-07-24 JP JP4218261A patent/JPH0645066A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100623223B1 (en) * | 2000-10-14 | 2006-09-11 | 삼성에스디아이 주식회사 | Manufacture method and protect device of organic electroluminescence element |
| KR20030044670A (en) * | 2001-11-30 | 2003-06-09 | 오리온전기 주식회사 | Encapsulation cap of organic electroluminescent device and method for manufacture thereof |
| KR100637545B1 (en) * | 2001-11-30 | 2006-11-10 | 오리온오엘이디 주식회사 | Encapsulation cap of organic electroluminescent device and method for manufacturing thereof |
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