JPH0594879A - Thin-film el panel - Google Patents
Thin-film el panelInfo
- Publication number
- JPH0594879A JPH0594879A JP3253579A JP25357991A JPH0594879A JP H0594879 A JPH0594879 A JP H0594879A JP 3253579 A JP3253579 A JP 3253579A JP 25357991 A JP25357991 A JP 25357991A JP H0594879 A JPH0594879 A JP H0594879A
- Authority
- JP
- Japan
- Prior art keywords
- thin film
- panel
- color filter
- spacer
- film
- 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.)
- Granted
Links
- 239000010409 thin film Substances 0.000 title claims abstract description 40
- 125000006850 spacer group Chemical group 0.000 claims abstract description 29
- 239000000758 substrate Substances 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims description 11
- 230000015556 catabolic process Effects 0.000 abstract description 8
- 230000000007 visual effect Effects 0.000 abstract 1
- 230000007547 defect Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 239000011521 glass Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000007650 screen-printing Methods 0.000 description 3
- 239000003086 colorant Substances 0.000 description 2
- 238000000206 photolithography Methods 0.000 description 2
- 238000004528 spin coating Methods 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000001056 green pigment Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000001054 red pigment Substances 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
Landscapes
- Electroluminescent Light Sources (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は薄膜ＥＬパネルに関
し、より詳しくは、薄膜ＥＬ素子とカラーフィルタとを
組み合わせて構成されるフィルタ方式の薄膜ＥＬパネル
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thin film EL panel, and more particularly to a filter type thin film EL panel constructed by combining a thin film EL element and a color filter.
【０００２】[0002]
【従来の技術】最近、薄膜ＥＬパネルを多色化するため
に、薄膜ＥＬ素子とカラーフィルタとを対向させたフィ
ルタ方式のものが開発されている。フィルタ方式とは、
薄膜ＥＬ素子から出る単一色の光を複数色のカラーフィ
ルタ(有機物からなる)により分光して、複数の発光色を
得る方式をいう。フィルタ方式の薄膜ＥＬパネルは、Ｅ
Ｌ素子に単一色の発光層を設ければよいので製造プロセ
スを簡単化できる利点があるが、ＥＬ素子とカラーフィ
ルタとの間のギャップにより視角依存性(いわゆる色ず
れ)を生ずる。このため、従来は、上記ＥＬ素子とカラ
ーフィルタとの間に何も設けず、両者をできるだけ近接
させて構成していた。2. Description of the Related Art Recently, in order to make a thin film EL panel multi-colored, a filter system in which a thin film EL element and a color filter are opposed to each other has been developed. What is a filter method?
It is a method of obtaining a plurality of emission colors by dispersing light of a single color emitted from a thin film EL element by color filters of a plurality of colors (made of an organic material). Filter type thin film EL panel is E
Since it is sufficient to provide a light emitting layer of a single color for the L element, there is an advantage that the manufacturing process can be simplified, but viewing angle dependency (so-called color shift) occurs due to the gap between the EL element and the color filter. Therefore, conventionally, nothing is provided between the EL element and the color filter, and the EL element and the color filter are arranged as close to each other as possible.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上記従
来の薄膜ＥＬパネルは、ＥＬ素子とカラーフィルタとを
近接させて構成するため、製造段階で絵素とカラーフィ
ルタとの位置合わせを行うときに、ＥＬ素子とカラーフ
ィルタとが接触して傷を生ずることがある。また、ＥＬ
素子は動作時(交流駆動時)に厚さ方向に伸縮を繰り返す
性質を有することから、製品段階で上記ＥＬ素子とカラ
ーフィルタとが部分的に接触して、絶縁破壊による絵素
欠けや線状欠陥が生ずるという問題がある。However, in the above-mentioned conventional thin film EL panel, since the EL element and the color filter are arranged close to each other, when the picture element and the color filter are aligned at the manufacturing stage, The EL element and the color filter may come into contact with each other to cause scratches. Also, EL
Since the element has the property of repeatedly expanding and contracting in the thickness direction during operation (during AC drive), the EL element and the color filter partially contact with each other at the product stage, resulting in a lack of pixels due to dielectric breakdown or a line shape. There is a problem that defects occur.
【０００４】そこで、この発明の目的は、視角依存性を
改善できる上、ＥＬ素子とカラーフィルタとの接触を防
止でき、絶縁破壊による絵素欠けや線状欠陥の発生を抑
制できる薄膜ＥＬパネルを提供することにある。Therefore, an object of the present invention is to provide a thin film EL panel capable of improving the viewing angle dependency, preventing the contact between the EL element and the color filter, and suppressing the occurrence of pixel defects and line defects due to dielectric breakdown. To provide.
【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、この発明の薄膜ＥＬパネルは、基板面に並ぶ複数の
絵素を有する薄膜ＥＬ素子と、カラーフィルタとを対向
させて構成され、上記各絵素が発生する光を上記カラー
フィルタを通して出射する薄膜ＥＬパネルにおいて、上
記薄膜ＥＬ素子の上記絵素の隙間に、遮光性を有し、上
記基板面に対して略垂直に突出するスペーサを設けたこ
とを特徴としている。In order to achieve the above object, a thin film EL panel of the present invention comprises a thin film EL element having a plurality of picture elements arranged on a substrate surface and a color filter, In a thin film EL panel that emits the light generated by each of the picture elements through the color filter, a spacer having a light blocking property in a gap between the picture elements of the thin film EL element and protruding substantially perpendicularly to the substrate surface. It is characterized by the provision of.
【０００６】また、上記スペーサは、光を吸収あるいは
反射する材料成分を含むのが望ましい。Further, it is desirable that the spacer contains a material component that absorbs or reflects light.
【０００７】また、上記スペーサが上記基板面の絵素か
ら突出する高さは、０.１μｍ乃至２００μｍであるの
が望ましい。The height of the spacer protruding from the picture element on the substrate surface is preferably 0.1 μm to 200 μm.
【０００８】[0008]
【作用】薄膜ＥＬ素子の絵素の隙間に、基板面に対して
略垂直に突出するスペーサを設けたことにより、製造段
階および製品段階でＥＬ素子(絵素)とカラーフィルタと
の隙間が確保され、両者が接触しなくなる。したがっ
て、傷や絶縁破壊による絵素欠け、線状欠陥などが生じ
なくなる。また、上記スペーサは、遮光性を有している
ので、隣接する絵素からの光漏れが抑えられ、各絵素が
光学的に分離される。したがって、視角依存性が改善さ
れる。[Function] By providing a spacer projecting substantially perpendicular to the substrate surface in the gap between the picture elements of the thin film EL element, a gap between the EL element (picture element) and the color filter is secured at the manufacturing stage and the product stage. The two are no longer in contact with each other. Therefore, pixel defects and line defects due to scratches and dielectric breakdown do not occur. Further, since the spacer has a light-shielding property, light leakage from adjacent picture elements is suppressed, and each picture element is optically separated. Therefore, the viewing angle dependency is improved.
【０００９】また、上記スペーサが光を反射する材料成
分を含む場合、スペーサの側面に入射した光が反射され
てパネル外へ出射される。したがって、薄膜ＥＬパネル
の輝度が高まる。When the spacer contains a material component that reflects light, the light incident on the side surface of the spacer is reflected and emitted to the outside of the panel. Therefore, the brightness of the thin film EL panel is increased.
【００１０】また、上記スペーサが基板面の絵素から突
出する高さが０.１μｍ〜２００μｍである場合、上記
スペーサは樹脂を材料として回転塗布法またはスクリー
ン印刷法などにより容易に形成される。Further, when the height of the spacer protruding from the picture element on the substrate surface is 0.1 μm to 200 μm, the spacer is easily formed by a spin coating method or a screen printing method using resin as a material.
【００１１】[0011]
【実施例】以下、この発明の薄膜ＥＬパネルを図示の実
施例により詳細に説明する。The thin film EL panel of the present invention will be described in detail below with reference to the embodiments shown in the drawings.
【００１２】図１に示すように、この薄膜ＥＬパネル
は、ガラス基板１上に、単一色を発生する薄膜ＥＬ素子
１００を備えている。この薄膜ＥＬ素子１００は、Ｔ
a、Ｍo、Ｗなどの下部電極２をストライプ状に形成し、
その上にＳiＯ2、Ｓi3Ｎ4からなる下部絶縁層３と、Ｚn
Ｓ：Ｍnからなる発光層４と、Ｓi3Ｎ4、Ａl2Ｏ3からな
る上部絶縁層５とを順次積層し、最後にＩＴＯからなる
ストライプ状の透明電極６を上記下部電極２と直交する
方向に形成して作製する。上記下部電極２と上部電極６
との各交差箇所がそれぞれ１つの絵素１０を構成してい
る。この各絵素１０の隙間に、感光性樹脂に黒色顔料を
分散した材料を用いてスペーサ７が設けられている。こ
のスペーサ７は、スピンナーで５μmの厚さに塗布した
後、図２に示すように、フォトリソグラフィ法により格
子状に加工する。これとは別に、感光性樹脂に赤色顔
料,緑色顔料を分散した材料を用いて、フォトリソグラ
フィ法により、シールガラス９に赤(Ｒ)と緑(Ｇ)のカラ
ーフィルタ８をモザイク状に形成しておく。このシール
ガラス９とＥＬ素子１００とをモザイク模様と絵素１０
とが一致するように重ね合わせ、真空密閉する。これに
より、薄膜ＥＬパネルを構成する。As shown in FIG. 1, this thin film EL panel is provided with a thin film EL element 100 for generating a single color on a glass substrate 1. This thin film EL element 100 has a T
The lower electrode 2 such as a, Mo, W is formed in a stripe shape,
On top of that, a lower insulating layer 3 made of SiO 2 , Si 3 N 4 and Zn
A light emitting layer 4 made of S: Mn and an upper insulating layer 5 made of Si 3 N 4 and Al 2 O 3 are sequentially laminated, and finally, a transparent electrode 6 in a stripe shape made of ITO is orthogonal to the lower electrode 2. Formed in the direction. The lower electrode 2 and the upper electrode 6
Each intersection with and constitutes one picture element 10. Spacers 7 are provided in the spaces between the picture elements 10 using a material in which a black pigment is dispersed in a photosensitive resin. The spacers 7 are applied with a spinner to a thickness of 5 μm, and then processed into a lattice shape by photolithography, as shown in FIG. Separately from this, a red (R) and green (G) color filter 8 is formed in a mosaic shape on the seal glass 9 by photolithography using a material in which a red pigment and a green pigment are dispersed in a photosensitive resin. Keep it. The seal glass 9 and the EL element 100 are used as a mosaic pattern and a picture element 10.
Stack them so that and match, and seal in a vacuum. This constitutes a thin film EL panel.
【００１３】このようにして作成した薄膜ＥＬパネル
は、電圧を印加し発光させるとＺnＳ：Ｍn発光層４から
出る黄橙色の発光がカラーフィルタ８を通ることにより
赤と緑に分離され多色発光する。しかも、薄膜ＥＬ素子
１００の絵素１０の隙間に、基板面に対して略垂直に突
出するスペーサ７を設けたことにより、製造段階および
製品段階で絵素１０とカラーフィルタ８との隙間を確保
でき、両者が接触しなくなる。したがって、傷や絶縁破
壊による絵素欠け、線状欠陥などが生じるのを防止でき
る。また、上記スペーサ７は、遮光性を有しているの
で、隣接する絵素からの光漏れが抑えられ、各絵素１０
が光学的に分離される。したがって、視角依存性を改善
することができる。In the thin-film EL panel thus manufactured, when a voltage is applied to cause light emission, yellow-orange light emitted from the ZnS: Mn light-emitting layer 4 is separated into red and green by passing through the color filter 8 and multicolor light emission. To do. Moreover, by providing the spacer 7 that projects substantially perpendicularly to the substrate surface in the gap between the picture elements 10 of the thin film EL element 100, a gap between the picture elements 10 and the color filter 8 is secured at the manufacturing stage and the product stage. Yes, the two don't touch. Therefore, it is possible to prevent the occurrence of pixel defects, line defects, and the like due to scratches and dielectric breakdown. In addition, since the spacer 7 has a light-shielding property, light leakage from adjacent picture elements can be suppressed, and each picture element 10 can be suppressed.
Are optically separated. Therefore, the viewing angle dependency can be improved.
【００１４】また、図３に示すように、上記スペーサ７
に代えて、光を反射する材料成分を含むスペーサ７′を
設けても良い。このスペーサ７′は、ＥＬ素子１００上
にシリコーン樹脂(膜厚０.５μm)１１を設けた後、スク
リーン印刷法により、樹脂にＡl粉末を分散した材料を
用いて１００μmの厚さに形成している。この場合、ス
ペーサ７′の側面７′aに入射した光Ｌ1が反射され、本
来の光Ｌ0とともにパネル外へ出射される。したがっ
て、薄膜ＥＬパネルの輝度を高めることができる。Further, as shown in FIG.
Instead of this, a spacer 7'containing a material component that reflects light may be provided. This spacer 7 ′ is formed to have a thickness of 100 μm by using a material in which Al powder is dispersed in the resin by screen printing after providing a silicone resin (film thickness 0.5 μm) 11 on the EL element 100. There is. In this case, the light L 1 incident on the side surface 7'a of the spacer 7'is reflected and is emitted to the outside of the panel together with the original light L 0 . Therefore, the brightness of the thin film EL panel can be increased.
【００１５】[0015]
【発明の効果】以上より明らかなように、この発明は、
基板面に並ぶ複数の絵素を有する薄膜ＥＬ素子と、カラ
ーフィルタとを対向させて構成され、上記各絵素が発生
する光を上記カラーフィルタを通して出射する薄膜ＥＬ
パネルにおいて、上記薄膜ＥＬ素子の上記絵素の隙間
に、遮光性を有し、上記基板面に対して略垂直に突出す
るスペーサを設けているので、ＥＬ素子とカラーフィル
タとの接触を防止でき、絶縁破壊による絵素欠けや線状
欠陥の発生を抑制できる。また、上記スペーサが遮光性
を有することから、各絵素を光学的に分離することがで
き、視角依存性(色ずれ)を改善することができる。As is apparent from the above, the present invention is
A thin film EL element that is configured by facing a thin film EL element having a plurality of picture elements arranged on a substrate surface and a color filter, and that emits light generated by each picture element through the color filter.
In the panel, since a spacer having a light-shielding property and protruding substantially perpendicular to the substrate surface is provided in the gap between the picture elements of the thin film EL element, contact between the EL element and the color filter can be prevented. It is possible to suppress the occurrence of pixel defects and line defects due to dielectric breakdown. Further, since the spacer has a light-shielding property, each picture element can be optically separated, and the viewing angle dependency (color shift) can be improved.
【００１６】また、上記スペーサが光を反射する材料成
分を含む場合、スペーサの側面に入射した光を反射して
パネル外へ出射ことができる。したがって、薄膜ＥＬパ
ネルの輝度を高めることができる。When the spacer contains a material component that reflects light, the light incident on the side surface of the spacer can be reflected and emitted to the outside of the panel. Therefore, the brightness of the thin film EL panel can be increased.
【００１７】また、上記スペーサが基板面の絵素から突
出する高さが０.１μｍ〜２００μｍである場合、上記
スペーサは樹脂を材料として回転塗布法またはスクリー
ン印刷法などにより容易に形成することができる。Further, when the height of the spacer protruding from the picture element on the substrate surface is 0.1 μm to 200 μm, the spacer can be easily formed by a spin coating method or a screen printing method using resin as a material. it can.
【図１】 この発明の一実施例の薄膜ＥＬパネルの断面
構造を示す図である。FIG. 1 is a diagram showing a cross-sectional structure of a thin film EL panel according to an embodiment of the present invention.
【図２】 上記薄膜ＥＬパネルのスペーサの平面パター
ンを示す図である。FIG. 2 is a diagram showing a plane pattern of a spacer of the thin film EL panel.
【図３】 光を反射する材料成分を含むスペーサを設け
た例を示す図である。FIG. 3 is a diagram showing an example in which a spacer containing a material component that reflects light is provided.
１ ガラス基板 ２ 下部電極 ３ 下部絶縁層 ４ 発光層 ５ 上部絶縁層 ６ 透明電極 ７,７′ スペーサ ８ カラーフィルタ ９ シールガラス １０ 絵素 １００ 薄膜ＥＬ素子 1 Glass Substrate 2 Lower Electrode 3 Lower Insulating Layer 4 Light Emitting Layer 5 Upper Insulating Layer 6 Transparent Electrode 7,7 'Spacer 8 Color Filter 9 Seal Glass 10 Picture Element 100 Thin Film EL Element
Claims (3)
Ｌ素子と、カラーフィルタとを対向させて構成され、上
記各絵素が発生する光を上記カラーフィルタを通して出
射する薄膜ＥＬパネルにおいて、 上記薄膜ＥＬ素子の上記絵素の隙間に、遮光性を有し、
上記基板面に対して略垂直に突出するスペーサを設けた
ことを特徴とする薄膜ＥＬパネル。1. A thin film E having a plurality of picture elements arranged on a substrate surface.
In a thin film EL panel configured to face an L element and a color filter and emitting light generated by each picture element through the color filter, a light shielding property is provided in a gap between the picture elements of the thin film EL element. Then
A thin-film EL panel, characterized in that spacers are provided that project substantially perpendicularly to the substrate surface.
する材料成分を含むことを特徴とする請求項１に記載の
薄膜ＥＬパネル。2. The thin film EL panel according to claim 1, wherein the spacer includes a material component that absorbs or reflects light.
出する高さは、０.１μｍ乃至２００μｍであることを
特徴とする請求項１または請求項２に記載の薄膜ＥＬパ
ネル。3. The thin film EL panel according to claim 1, wherein a height of the spacer protruding from the picture element on the substrate surface is 0.1 μm to 200 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3253579A JP2766096B2 (en) | 1991-10-01 | 1991-10-01 | Thin film EL panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3253579A JP2766096B2 (en) | 1991-10-01 | 1991-10-01 | Thin film EL panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0594879A true JPH0594879A (en) | 1993-04-16 |
| JP2766096B2 JP2766096B2 (en) | 1998-06-18 |
Family
ID=17253341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3253579A Expired - Lifetime JP2766096B2 (en) | 1991-10-01 | 1991-10-01 | Thin film EL panel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2766096B2 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6111355A (en) * | 1996-11-27 | 2000-08-29 | Sharp Kabushiki Kaisha | Thin film EL panels and a method for producing the same |
| JP2002299042A (en) * | 2001-03-30 | 2002-10-11 | Sanyo Electric Co Ltd | Electroluminescence device with shock-absorbing function, and sealing member with shock-absorbing function for electroluminescence device |
| KR100705319B1 (en) * | 2004-12-01 | 2007-04-10 | 엘지전자 주식회사 | Organic Electro-Luminescence Display Device And Fabricating Method Thereof |
| US7317282B2 (en) | 1999-10-29 | 2008-01-08 | Semiconductor Energy Laboratory Co., Ltd. | Self light-emitting device |
| JP2013213869A (en) * | 2012-03-30 | 2013-10-17 | Dainippon Printing Co Ltd | Substrate for color filter used for organic electroluminescence display device, color filter for organic electroluminescence display device, and organic electroluminescence display device |
| US8884301B2 (en) | 1999-10-12 | 2014-11-11 | Semiconductor Energy Laboratory Co., Ltd. | EL display device and a method of manufacturing the same |
| JP2015011140A (en) * | 2013-06-28 | 2015-01-19 | 大日本印刷株式会社 | Color filter formation substrate and organic el display device |
| US8957584B2 (en) | 1999-10-29 | 2015-02-17 | Semiconductor Energy Laboratory Co., Ltd. | Self light-emitting device |
| US9112183B2 (en) | 2010-03-31 | 2015-08-18 | Joled Inc. | Display panel apparatus and manufacturing method of display panel apparatus |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63121296A (en) * | 1986-11-11 | 1988-05-25 | 株式会社日本自動車部品総合研究所 | Thin film light emitting device |
| JPH02181389A (en) * | 1988-12-29 | 1990-07-16 | Sharp Corp | Multicolored display el panel |
-
1991
- 1991-10-01 JP JP3253579A patent/JP2766096B2/en not_active Expired - Lifetime
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63121296A (en) * | 1986-11-11 | 1988-05-25 | 株式会社日本自動車部品総合研究所 | Thin film light emitting device |
| JPH02181389A (en) * | 1988-12-29 | 1990-07-16 | Sharp Corp | Multicolored display el panel |
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| US8884301B2 (en) | 1999-10-12 | 2014-11-11 | Semiconductor Energy Laboratory Co., Ltd. | EL display device and a method of manufacturing the same |
| US7317282B2 (en) | 1999-10-29 | 2008-01-08 | Semiconductor Energy Laboratory Co., Ltd. | Self light-emitting device |
| US8110983B2 (en) | 1999-10-29 | 2012-02-07 | Semiconductor Energy Laboratory Co., Ltd. | Self light emitting device |
| US8957584B2 (en) | 1999-10-29 | 2015-02-17 | Semiconductor Energy Laboratory Co., Ltd. | Self light-emitting device |
| US9299955B2 (en) | 1999-10-29 | 2016-03-29 | Semiconductor Energy Laboratory Co., Ltd. | Self light-emitting device |
| JP2002299042A (en) * | 2001-03-30 | 2002-10-11 | Sanyo Electric Co Ltd | Electroluminescence device with shock-absorbing function, and sealing member with shock-absorbing function for electroluminescence device |
| JP4511072B2 (en) * | 2001-03-30 | 2010-07-28 | 三洋電機株式会社 | Electroluminescent device with shock absorbing function and sealing member with shock absorbing function for electroluminescent device |
| KR100705319B1 (en) * | 2004-12-01 | 2007-04-10 | 엘지전자 주식회사 | Organic Electro-Luminescence Display Device And Fabricating Method Thereof |
| US9112183B2 (en) | 2010-03-31 | 2015-08-18 | Joled Inc. | Display panel apparatus and manufacturing method of display panel apparatus |
| JP2013213869A (en) * | 2012-03-30 | 2013-10-17 | Dainippon Printing Co Ltd | Substrate for color filter used for organic electroluminescence display device, color filter for organic electroluminescence display device, and organic electroluminescence display device |
| JP2015011140A (en) * | 2013-06-28 | 2015-01-19 | 大日本印刷株式会社 | Color filter formation substrate and organic el display device |
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| JP2766096B2 (en) | 1998-06-18 |
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