JP2002008869A - Organic el panel display device - Google Patents
Organic el panel display deviceInfo
- Publication number
- JP2002008869A JP2002008869A JP2000188855A JP2000188855A JP2002008869A JP 2002008869 A JP2002008869 A JP 2002008869A JP 2000188855 A JP2000188855 A JP 2000188855A JP 2000188855 A JP2000188855 A JP 2000188855A JP 2002008869 A JP2002008869 A JP 2002008869A
- Authority
- JP
- Japan
- Prior art keywords
- organic
- electrodes
- opening
- insulating film
- display device
- 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
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/17—Passive-matrix OLED displays
- H10K59/173—Passive-matrix OLED displays comprising banks or shadow masks
Landscapes
- Electroluminescent Light Sources (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ドット発光部の延
命化をはかった有機ＥＬパネル表示装置に関する。[0001] 1. Field of the Invention [0002] The present invention relates to an organic EL panel display device in which the life of a dot light emitting portion is extended.
【０００２】[0002]
【従来の技術】有機ＥＬ（Electro Luminescence）パ
ネル表示装置は自発光型の表示装置であり、視野角が広
い、コントラストが高い、応答速度が速い等ＬＣＤ（Li
quidCrystal Device）にない特徴を有することから近
年開発が盛んに行われ、携帯電話やカーナビゲーション
システムのモニタとして搭載されるようになった。有機
ＥＬ表示パネル装置は、ガラス基板、あるいは透明な有
機フィルム上に形成した無機化合物である硫化亜鉛系の
蛍光体に交流高電圧を印加したときに発光する現象とし
て古くから知られている。2. Description of the Related Art An organic EL (Electro Luminescence) panel display device is a self-luminous display device, and has a wide viewing angle, a high contrast, a high response speed and the like.
Since it has features not found in quidCrystal Devices, it has been actively developed in recent years, and has come to be mounted as a monitor for mobile phones and car navigation systems. 2. Description of the Related Art An organic EL display panel device has long been known as a phenomenon that emits light when an AC high voltage is applied to a zinc sulfide-based phosphor that is an inorganic compound formed on a glass substrate or a transparent organic film.
【０００３】有機ＥＬ表示パネル装置は、図３に示すよ
うに、ガラスの透明基板２４上にＩＴＯ等の陽極２３、
正孔輸送層、発光層および電子輸送層からなる有機ＥＬ
層２５、陽極２３に交差する陰極２６を順に蒸着積層し
て形成される。そして、有機ＥＬ層２５を挟持して互い
に対向し対をなす陽極２３および陰極２６とによって有
機ＥＬディスプレイとなる発光部が形成され、陽極２３
および陰極２６の各々が互いに対向して交差する交差領
域部の発光部を単位として１画素が形成される。なお、
図２（ａ）は上記した１画素単位の発光部の平面図、
（ｂ）、（ｃ）はそれぞれＸＹ断面図を示し、２１は陰
極隔壁、２２は絶縁層、２０は、絶縁層２２の開口部で
ある。As shown in FIG. 3, an organic EL display panel device has an anode 23 made of ITO or the like on a transparent substrate 24 made of glass.
Organic EL comprising a hole transport layer, a light emitting layer and an electron transport layer
The layer 25 is formed by sequentially depositing and stacking a cathode 26 crossing the anode 23. Then, a light-emitting portion serving as an organic EL display is formed by the anode 23 and the cathode 26 which face each other with the organic EL layer 25 interposed therebetween.
One pixel is formed for each light-emitting part in the intersection region where the cathode 26 and the cathode 26 cross each other. In addition,
FIG. 2A is a plan view of the above-described light emitting unit in one pixel unit,
(B) and (c) are XY cross-sectional views, respectively, 21 is a cathode partition, 22 is an insulating layer, and 20 is an opening of the insulating layer 22.
【０００４】[0004]
【発明が解決しようとする課題】ところで、上述した絶
縁層２２の開口部２０の寸法は、絶縁層２２上に陰極隔
壁２１が乗るようにズレや細リ等の公差、精度を考慮し
て設計していた。すなわち、あらかじめパターンニング
された陽極２３の幅がエッチングによって片側約１．５
μｍ細り、絶縁膜２２はこのパターンニング後片側約３
μｍ細ることが経験的にわかっている。従って、陽極パ
ターンの端は膜厚が薄くなるため、絶縁膜２２を十分に
陽極２３の縁部と重複させる必要がある。また、経年変
化により、膜厚の薄い部分で陽極２３と陰極２６が接近
し、電流が集中しやすくなって、その結果、発光部に黒
枠となって現れ、この黒枠は、特に、陰極隔壁２１から
絶縁層２２の開口部２０に向かって進行し、結果的に発
光面積の低下をきたす。これは、隔壁レジストからの水
分等で有機ＥＬ膜２５、アルミ電極膜２６が劣化するこ
と、あるいはアルミ電極膜２６が切れて封入ガスに晒さ
れるためと考えられる。By the way, the dimensions of the opening 20 of the insulating layer 22 are designed in consideration of tolerances such as misalignment and narrowness and precision so that the cathode partition 21 is placed on the insulating layer 22. Was. That is, the width of the pre-patterned anode 23 is about 1.5
μm, and the insulating film 22 has about 3
It is empirically known that the thickness is reduced by μm. Therefore, since the thickness of the end of the anode pattern becomes thin, it is necessary to sufficiently overlap the insulating film 22 with the edge of the anode 23. Also, due to aging, the anode 23 and the cathode 26 approach each other in a thin portion, and the current tends to concentrate. As a result, a black frame appears on the light emitting portion. From the surface to the opening 20 of the insulating layer 22, and as a result, the light emitting area is reduced. It is considered that this is because the organic EL film 25 and the aluminum electrode film 26 are deteriorated by moisture or the like from the partition wall resist, or the aluminum electrode film 26 is cut and exposed to the sealing gas.
【０００５】本発明は上記事情に鑑みてなされたもので
あり、基板上に陽極を形成し、絶縁膜、陰極隔壁を順次
積層して成る有機ＥＬパネル表示装置において、絶縁膜
の開口部から陰極隔壁に至る距離を、絶縁膜の開口部か
ら陽極に至る距離に比べて小さくすることにより、黒枠
が進行しやすい方向の絶縁膜の開口部をあらかじめ広げ
ておき、黒枠進行による発光面積の低下現象を遅らせる
ことによって延命化をはかった有機ＥＬパネル表示装置
を提供することを目的とする。The present invention has been made in view of the above circumstances, and in an organic EL panel display device in which an anode is formed on a substrate, an insulating film and a cathode partition are sequentially laminated, a cathode is formed from an opening in the insulating film. By making the distance to the partition smaller than the distance from the opening of the insulating film to the anode, the opening of the insulating film in the direction in which the black frame is likely to advance is widened in advance, and the phenomenon that the light emitting area decreases due to the progress of the black frame It is an object of the present invention to provide an organic EL panel display device whose life is extended by delaying.
【０００６】[0006]
【課題を解決するための手段】上記した課題を解決する
ために請求項１に記載の発明は、複数の発光部から成る
画像表示配列をなす有機ＥＬパネル表示装置であって、
発光部に対応する複数の第１電極が表面上に形成された
基板と、少なくとも第１電極の一部分を露出せしめる基
板上に突出する複数の電気絶縁性の隔壁と、露出した第
１電極の部分の各々上に形成された有機ＥＬ膜と、有機
ＥＬ膜上に形成された複数の第２電極から成り、有機Ｅ
Ｌ膜と第１及び第２電極の一方との間には絶縁膜が形成
され、絶縁膜は、第１及び第２電極の縁部にかかると共
に、第１、第２電極が交差する交差領域に対応した開口
部を有し、絶縁膜の開口部から隔壁に至る距離を、絶縁
膜開口部から第１電極に至る距離に比べて小さくするこ
ととした。このことにより、絶縁物の開口部から隔壁に
至る寸法を小さくすることによって黒枠が進行しやすい
隔壁近傍の絶縁物の開口部をあらかじめ広げておき、黒
枠進行による発光面積の低下を遅らすことが出来、延命
化をはかった有機ＥＬパネル表示装置を提供することが
できる。According to a first aspect of the present invention, there is provided an organic EL panel display device having an image display array comprising a plurality of light emitting units.
A substrate having a plurality of first electrodes corresponding to the light emitting portions formed on a surface thereof; a plurality of electrically insulating partitions projecting over the substrate exposing at least a portion of the first electrodes; and a portion of the exposed first electrodes And an organic EL film formed on each of the organic EL films and a plurality of second electrodes formed on the organic EL film.
An insulating film is formed between the L film and one of the first and second electrodes, and the insulating film covers an edge of the first and second electrodes and an intersection region where the first and second electrodes intersect. The distance from the opening of the insulating film to the partition is made smaller than the distance from the opening of the insulating film to the first electrode. Thus, by reducing the dimension from the opening of the insulator to the partition, the opening of the insulator near the partition where the black frame is likely to advance can be widened in advance, and the decrease in the light emitting area due to the progress of the black frame can be delayed. It is possible to provide an organic EL panel display device having a prolonged life.
【０００７】[0007]
【発明の実施の形態】図１は本発明における有機ＥＬパ
ネル表示装置の構造を示す図であり、（ａ）は１画素単
位の発光部の平面図、（ｂ）、（ｃ）は、それぞれ、Ｘ
Ｙ断面を示す図である。FIG. 1 is a view showing the structure of an organic EL panel display device according to the present invention. FIG. 1 (a) is a plan view of a light-emitting portion for one pixel, and FIGS. , X
It is a figure showing a Y section.
【０００８】図１に示されるように、本発明の有機ＥＬ
パネル表示装置は、発光部に対応して設けられる複数の
第１電極１３（ＩＴＯ等の陽極）が表面上に形成された
ガラス基板１４と、第１電極１３の一部分を露出せしめ
る基板上に突出する複数の電気絶縁性の逆テーパー状の
陰極隔壁１１と、露出した第１電極１３の部分の各々上
に形成された有機ＥＬ膜と、有機ＥＬ膜上に形成された
複数の第２電極（有機ＥＬ膜、第２電極ともに図示せ
ず、図３を参照のこと）から成る。そして、有機ＥＬ膜
と第１及び第２電極の一方との間には絶縁膜１２が形成
され、絶縁膜１２は、第１及び第２電極の縁部にかかる
と共に、第１、第２電極が交差する交差領域に対応した
開口部１０を有している。As shown in FIG. 1, the organic EL of the present invention
The panel display device includes a glass substrate 14 having a plurality of first electrodes 13 (anodes such as ITO) formed on the surface thereof, which are provided corresponding to the light emitting units, and a projection on a substrate exposing a part of the first electrodes 13. A plurality of electrically insulating reverse-tapered cathode barrier ribs 11, an organic EL film formed on each of the exposed portions of the first electrode 13, and a plurality of second electrodes ( Both the organic EL film and the second electrode are not shown, but refer to FIG. 3). Then, an insulating film 12 is formed between the organic EL film and one of the first and second electrodes, and the insulating film 12 covers the edges of the first and second electrodes, and the first and second electrodes. Has an opening 10 corresponding to the intersection area where the intersections are made.
【０００９】特徴的には、絶縁膜１２の開口部１０から
陰極隔壁１１に至る距離（寸法ｂ）を、絶縁膜１２の開
口部１０から陽極１３に至る距離（寸法ａ）に比べて小
さくしている。ここでは、絶縁膜１２をポリイミド等の
絶縁性高分子膜で形成し、陰極隔壁１１とポリイミド１
２間の距離を１３μｍ、陽極１３とポリイミド１２間の
距離を１６．５μｍとしている。特に、陰極隔壁１１と
ポリイミド１２間の距離をＸ、陽極１３とポリイミド１
２間の距離をＹとしたときに、Ｘ：Ｙを１：２としたと
きに長寿命化に顕著な効果が得られる。Characteristically, the distance (dimension b) from the opening 10 of the insulating film 12 to the cathode partition 11 is made smaller than the distance (dimension a) from the opening 10 of the insulating film 12 to the anode 13. ing. Here, the insulating film 12 is formed of an insulating polymer film such as polyimide, and the cathode partition 11 and the polyimide 1 are formed.
The distance between the two is 13 μm, and the distance between the anode 13 and the polyimide 12 is 16.5 μm. In particular, the distance between the cathode partition 11 and the polyimide 12 is X, and the distance between the anode 13 and the polyimide 1 is X.
When the distance between the two is Y, and when X: Y is 1: 2, a remarkable effect on extending the life is obtained.
【００１０】以上説明のように本発明は、基板上１４に
陽極１３を形成し、絶縁膜１２、陰極隔壁１１を順次積
層して成る有機ＥＬパネル表示装置において、絶縁膜１
２の開口部１０から陰極隔壁１１に至る距離を、絶縁膜
１２の開口部１０から陽極１３に至る距離に比べて小さ
くすることにより、黒枠が進行しやすい方向の絶縁膜１
２の開口部１０をあらかじめ広げておき、黒枠進行によ
る発光面積の低下現象を遅らせることによって延命化を
はかった有機ＥＬパネル表示装置を提供することができ
る。As described above, the present invention relates to an organic EL panel display device in which an anode 13 is formed on a substrate 14 and an insulating film 12 and a cathode partition 11 are sequentially laminated.
By making the distance from the opening 10 to the cathode partition 11 smaller than the distance from the opening 10 of the insulating film 12 to the anode 13, the insulating film 1 in the direction in which the black frame easily advances is formed.
The organic EL panel display device having a prolonged life can be provided by previously expanding the opening 10 of the second and delaying the phenomenon of reduction in the light emitting area due to the progress of the black frame.
【００１１】[0011]
【発明の効果】以上説明のように本発明は、複数の発光
部から成る画像表示配列をなす有機ＥＬパネル表示装置
であって、発光部に対応する複数の第１電極が表面上に
形成された基板と、少なくとも第１電極の一部分を露出
せしめる基板上に突出する複数の電気絶縁性の隔壁と、
露出した第１電極の部分の各々上に形成された有機ＥＬ
膜と、有機ＥＬ膜上に形成された複数の第２電極から成
り、有機ＥＬ膜と第１及び第２電極の一方との間には絶
縁膜が形成され、絶縁膜は、第１及び第２電極の縁部に
かかると共に、第１、第２電極が交差する交差領域に対
応した開口部を有し、絶縁膜の開口部から隔壁に至る距
離を、絶縁膜開口部から第１電極に至る距離に比べて小
さくすることとしたものであり、このことにより、黒枠
が進行しやすい隔壁近傍の絶縁物の開口部をあらかじめ
広げておき、黒枠進行による発光面積の低下を遅らすこ
とが出来、延命化をはかった有機ＥＬパネル表示装置を
提供することができる。As described above, the present invention relates to an organic EL panel display device having an image display arrangement composed of a plurality of light emitting portions, wherein a plurality of first electrodes corresponding to the light emitting portions are formed on the surface. Substrate, and a plurality of electrically insulating barrier ribs protruding on the substrate exposing at least a portion of the first electrode,
Organic EL formed on each of the exposed first electrode portions
A film, and a plurality of second electrodes formed on the organic EL film; an insulating film is formed between the organic EL film and one of the first and second electrodes; It has an opening corresponding to the intersection area where the first and second electrodes intersect with the edge of the two electrodes, and the distance from the opening of the insulating film to the partition wall is changed from the opening of the insulating film to the first electrode. It is to be smaller than the distance to reach, by this, the opening of the insulator near the partition where the black frame is likely to advance is widened in advance, it is possible to delay the reduction of the light emitting area due to the progress of the black frame, An organic EL panel display device having a prolonged life can be provided.
【図１】本発明における有機ＥＬパネル表示装置の構造
を示す図である。FIG. 1 is a diagram showing a structure of an organic EL panel display device according to the present invention.
【図２】従来における有機ＥＬパネル表示装置の構造を
示す図である。FIG. 2 is a diagram showing a structure of a conventional organic EL panel display device.
【図３】従来における有機ＥＬパネル表示装置の構造を
示す図である。FIG. 3 is a diagram showing a structure of a conventional organic EL panel display device.
１０…絶縁膜開口部、１１…陰極隔壁、１２…絶縁膜、
１３…陽極（第１電極）、１４…ガラス基板10: opening of insulating film, 11: cathode partition, 12: insulating film,
13: anode (first electrode), 14: glass substrate
Claims (1)
す有機ＥＬパネル表示装置であって、 前記発光部に対応する複数の第１電極が表面上に形成さ
れた基板と、 少なくとも前記第１電極の一部分を露出せしめる前記基
板上に突出する複数の電気絶縁性の隔壁と、露出した前
記第１電極の部分の各々上に形成された有機ＥＬ膜と、
前記有機ＥＬ膜上に形成された複数の第２電極から成
り、 前記有機ＥＬ膜と前記第１及び第２電極の一方との間に
は絶縁膜が形成され、前記絶縁膜は、前記第１及び第２
電極の縁部にかかると共に、前記第１、第２電極が交差
する交差領域に対応した開口部を有し、前記絶縁膜の開
口部から前記隔壁に至る距離を、前記絶縁膜開口部から
前記第１電極に至る距離に比べて小さくすることを特徴
とする有機ＥＬパネル装置。1. An organic EL panel display device having an image display arrangement composed of a plurality of light emitting units, comprising: a substrate having a plurality of first electrodes corresponding to the light emitting units formed on a surface; A plurality of electrically insulating partitions protruding above the substrate exposing a portion of the electrode, and an organic EL film formed on each of the exposed portions of the first electrode;
A plurality of second electrodes formed on the organic EL film; an insulating film formed between the organic EL film and one of the first and second electrodes; And the second
Along the edge of the electrode, the first and second electrodes have an opening corresponding to an intersection area where the first electrode and the second electrode intersect, and the distance from the opening of the insulating film to the partition is from the opening of the insulating film to the partition. An organic EL panel device which is smaller than a distance to a first electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000188855A JP2002008869A (en) | 2000-06-23 | 2000-06-23 | Organic el panel display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000188855A JP2002008869A (en) | 2000-06-23 | 2000-06-23 | Organic el panel display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002008869A true JP2002008869A (en) | 2002-01-11 |
Family
ID=18688573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000188855A Pending JP2002008869A (en) | 2000-06-23 | 2000-06-23 | Organic el panel display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002008869A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107066051A (en) * | 2017-05-27 | 2017-08-18 | 捷开通讯(深圳)有限公司 | A kind of mobile electronic device and its display screen |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11339958A (en) * | 1998-05-22 | 1999-12-10 | Casio Comput Co Ltd | Manufacture of electroluminescent element |
| JP2000068071A (en) * | 1998-08-25 | 2000-03-03 | Casio Comput Co Ltd | Light-emitting device and its manufacture |
-
2000
- 2000-06-23 JP JP2000188855A patent/JP2002008869A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11339958A (en) * | 1998-05-22 | 1999-12-10 | Casio Comput Co Ltd | Manufacture of electroluminescent element |
| JP2000068071A (en) * | 1998-08-25 | 2000-03-03 | Casio Comput Co Ltd | Light-emitting device and its manufacture |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107066051A (en) * | 2017-05-27 | 2017-08-18 | 捷开通讯(深圳)有限公司 | A kind of mobile electronic device and its display screen |
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