JP2766096B2 - Thin film EL panel - Google Patents
Thin film EL panelInfo
- Publication number
- JP2766096B2 JP2766096B2 JP3253579A JP25357991A JP2766096B2 JP 2766096 B2 JP2766096 B2 JP 2766096B2 JP 3253579 A JP3253579 A JP 3253579A JP 25357991 A JP25357991 A JP 25357991A JP 2766096 B2 JP2766096 B2 JP 2766096B2
- Authority
- JP
- Japan
- Prior art keywords
- panel
- thin film
- film
- thin
- substrate
- 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
- 239000010409 thin film Substances 0.000 title claims description 45
- 125000006850 spacer group Chemical group 0.000 claims description 25
- 239000000758 substrate Substances 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 10
- 239000003086 colorant Substances 0.000 claims description 3
- 230000007547 defect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000015556 catabolic process Effects 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000000206 photolithography Methods 0.000 description 2
- 238000007650 screen-printing 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
- 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
- 239000005394 sealing glass Substances 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
Landscapes
- Electroluminescent Light Sources (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【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 formed 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 type in which a thin-film EL element and a color filter are opposed to each other has been developed. What is a filter method?
A method in which a single color light emitted from a thin film EL element is separated by a plurality of color filters (made of organic materials) to obtain a plurality of emission colors. The filter type thin film EL panel is E
It is only necessary to provide a light emitting layer of a single color for the L element, which has the advantage of simplifying the manufacturing process. However, viewing angle dependence (so-called color shift) is caused by the gap between the EL element and the color filter. For this reason, conventionally, nothing is provided between the EL element and the color filter, and the two are arranged as close 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, since the above-mentioned conventional thin-film EL panel is configured so that the EL element and the color filter are close to each other, when the alignment between the picture element and the color filter is performed at the manufacturing stage, the conventional thin-film EL panel has a disadvantage. The EL element and the color filter may come into contact with each other to cause damage. Also, EL
The element has the property of repeatedly expanding and contracting in the thickness direction during operation (at the time of AC driving). 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。Accordingly, an object of the present invention is to provide a thin film EL panel which can improve the viewing angle dependency, can prevent contact between an EL element and a color filter, and can suppress the occurrence of picture elements or 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、請求項１に記載の薄膜ＥＬパネルは、第１の基板の
片面に並んで形成された複数の絵素を有する薄膜ＥＬ素
子と、第２の基板の片面に形成された複数色のカラーフ
ィルタとを、上記第１の基板と第２の基板との間に挟ん
だ状態に組み合わせて構成され、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、上記第１の基板の面に対して上記薄膜ＥＬ
素子の層を越え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。According to a first aspect of the present invention, there is provided a thin film EL panel having a plurality of picture elements formed side by side on a first substrate. A plurality of color filters formed on one surface of the second substrate in a state sandwiched between the first substrate and the second substrate. In the thin-film EL panel that emits light through the color filter, the light-shielding property is provided between the picture elements of the thin-film EL element, and the thin-film EL
It is characterized in that a spacer is provided which projects substantially vertically beyond the element layer.
【０００６】また、請求項２に記載の薄膜ＥＬパネル
は、請求項１の薄膜ＥＬパネルにおいて、上記スペーサ
は、光を反射する材料成分を含むことを特徴としてい
る。According to a second aspect of the present invention, there is provided a thin film EL panel according to the first aspect, wherein the spacer includes a material component for reflecting light.
【０００７】[0007]
【作用】請求項１の薄膜ＥＬパネルでは、薄膜ＥＬ素子
の絵素の隙間に、上記第１の基板の面に対して上記薄膜
ＥＬ素子の層を越え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。In the thin film EL panel according to the first aspect of the present invention, a spacer is provided in a gap between picture elements of the thin film EL element so as to project substantially perpendicularly to the surface of the first substrate beyond the layer of the thin film EL element. Thereby, a gap between the EL element (picture element) and the color filter is secured in the manufacturing stage and the product stage, and the two do not come into contact with each other. Therefore, chipping, line defects, and the like 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.
【０００８】請求項２の薄膜ＥＬパネルでは、上記スペ
ーサが光を反射する材料成分を含むので、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。In the thin film EL panel according to the second aspect, since the spacer includes a material component that reflects light, light incident on the side surface of the spacer is reflected and emitted out of the panel. Therefore, the brightness of the thin-film EL panel increases.
【０００９】なお、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。When the height of the spacer projecting from the picture element on the substrate surface is 0.1 μm to 200 μm, the spacer is easily formed by spin coating or screen printing using resin as a material.
【００１０】[0010]
【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。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a thin-film EL panel according to the present invention.
【００１１】図１に示すように、この薄膜ＥＬパネル
は、第１の基板としてのガラス基板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、Ｔa、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、ＺnＳ：Ｍnからなる発光層４と、Ｓi3Ｎ
4、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、第２の基板としてのシー
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, the thin-film EL panel includes a thin-film EL element 100 for generating a single color on a glass substrate 1 as a first substrate. This thin film EL
The element 100 has a lower electrode 2 made of Ta, Mo, W or the like formed in a stripe shape, a lower insulating layer 3 made of SiO 2 , Si 3 N 4, a light emitting layer 4 made of ZnS: Mn, and a lower electrode 2 made of Si. 3 N
4. An upper insulating layer 5 made of Al 2 O 3 is sequentially laminated, and finally a transparent electrode 6 made of ITO is formed in a direction perpendicular to the lower electrode 2. Each intersection of the lower electrode 2 and the upper electrode 6 constitutes one picture element 10. Spacers 7 are provided between the picture elements 10 using a material in which a black pigment is dispersed in a photosensitive resin. This spacer 7 is 5 μm
Then, as shown in FIG. 2, it is processed into a lattice shape by a photolithography method. Separately, using a material in which a red pigment and a green pigment are dispersed in a photosensitive resin,
Red (R) and green (G) color filters 8 are formed in a mosaic shape on a seal glass 9 as a second substrate by a photolithography method. The sealing glass 9 and the EL element 100 are overlapped so that the mosaic pattern and the picture element 10 coincide with each other, and are vacuum-sealed. Thus, a thin film EL panel is formed.
【００１２】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 produced, when a voltage is applied to emit light, the yellow-orange light emitted from the ZnS: Mn light-emitting layer 4 passes through the color filter 8 and is separated into red and green to emit multicolor light. I do. Moreover, by providing the spacers 7 projecting substantially perpendicularly to the substrate surface in the gaps between the picture elements 10 of the thin-film EL element 100, the gaps between the picture elements 10 and the color filters 8 are secured in the manufacturing stage and the product stage. Yes, they do not come into contact. Therefore, it is possible to prevent the occurrence of chipping of picture elements, linear defects, and the like due to scratches and dielectric breakdown. Further, since the spacer 7 has a light-shielding property, light leakage from adjacent picture elements is suppressed, and each of the picture elements 10
Are optically separated. Therefore, the viewing angle dependency can be improved.
【００１３】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.
Alternatively, a spacer 7 'containing a material component that reflects light may be provided. The spacer 7 'is formed by providing a silicone resin (0.5 .mu.m thick) 11 on the EL element 100 and forming the spacer 7' to a thickness of 100 .mu.m using a material in which Al powder is dispersed in the resin by a screen printing method. I have. In this case, the light L 1 incident on the side surface 7'a of the spacer 7 'is reflected and emitted to the panel out along with the original light L 0. Therefore, the brightness of the thin film EL panel can be increased.
【００１４】[0014]
【発明の効果】以上より明らかなように、請求項１の薄
膜ＥＬパネルでは、第１の基板の片面に並んで形成され
た複数の絵素を有する薄膜ＥＬ素子と、第２の基板の片
面に形成された複数色のカラーフィルタとを、上記第１
の基板と第２の基板との間に挟んだ状態に組み合わせて
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、上記第１
の基板の面に対して上記薄膜ＥＬ素子の層を越えて略垂
直に突出するスペーサを設けているので、上記薄膜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 description, in the thin film EL panel of the first aspect, the thin film EL element having a plurality of picture elements formed side by side on the first substrate and the one side of the second substrate are provided. And the color filters of a plurality of colors formed in
In a thin film EL panel which is configured to be interposed between a substrate and a second substrate and emits light generated by each of the picture elements through the color filter, the gap between the picture elements of the thin film EL element In addition, it has a light shielding property,
Since a spacer is provided to project substantially perpendicularly to the surface of the substrate beyond the thin film EL element layer, the thin film EL
The contact between the element and the color filter can be prevented, and the occurrence of chipped pixels or linear defects due to dielectric breakdown can be suppressed. 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.
【００１５】請求項２の薄膜ＥＬパネルでは、上記スペ
ーサが光を反射する材料成分を含むので、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。In the thin-film EL panel according to the second aspect, since the spacer includes a material component that reflects light, light incident on the side surface of the spacer can be reflected and emitted out of the panel. Therefore, the brightness of the thin film EL panel can be increased.
【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 one 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 view 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 illustrating an example in which a spacer including 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 DESCRIPTION OF SYMBOLS 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 (2)
数の絵素を有する薄膜ＥＬ素子と、第２の基板の片面に
形成された複数色のカラーフィルタとを、上記第１の基
板と第２の基板との間に挟んだ状態に組み合わせて構成
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、
上記第１の基板の面に対して上記薄膜ＥＬ素子の層を越
え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 EL element having a plurality of picture elements formed side by side on one side of a first substrate and a color filter of a plurality of colors formed on one side of a second substrate, A thin film EL panel configured to be interposed between a substrate and a second substrate and emitting light generated by each of the picture elements through the color filter; , Light-shielding,
A thin-film EL panel, comprising a spacer that projects substantially perpendicularly to the surface of the first substrate beyond the layer of the thin-film EL element.
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 reflects light.
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 JPH0594879A (en) | 1993-04-16 |
| JP2766096B2 true 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) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10162952A (en) * | 1996-11-27 | 1998-06-19 | Sharp Corp | Thin film el panel and manufacture thereof |
| TW468283B (en) | 1999-10-12 | 2001-12-11 | Semiconductor Energy Lab | EL display device and a method of manufacturing the same |
| US8957584B2 (en) | 1999-10-29 | 2015-02-17 | Semiconductor Energy Laboratory Co., Ltd. | Self light-emitting device |
| TW478019B (en) | 1999-10-29 | 2002-03-01 | Semiconductor Energy Lab | Self light-emitting 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 |
| CN102293053B (en) | 2010-03-31 | 2015-04-15 | 松下电器产业株式会社 | Display panel device, and method for producing display panel device |
| JP5862423B2 (en) * | 2012-03-30 | 2016-02-16 | 大日本印刷株式会社 | Color filter substrate used for organic electroluminescence display device, color filter for organic electroluminescence display device, and organic electroluminescence display device |
| JP6331275B2 (en) * | 2013-06-28 | 2018-05-30 | 大日本印刷株式会社 | Color filter forming substrate and organic EL display device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0766858B2 (en) * | 1986-11-11 | 1995-07-19 | 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
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0594879A (en) | 1993-04-16 |
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