JP2001052858A - Organic el display device - Google Patents
Organic el display deviceInfo
- Publication number
- JP2001052858A JP2001052858A JP11222594A JP22259499A JP2001052858A JP 2001052858 A JP2001052858 A JP 2001052858A JP 11222594 A JP11222594 A JP 11222594A JP 22259499 A JP22259499 A JP 22259499A JP 2001052858 A JP2001052858 A JP 2001052858A
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- JP
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- Prior art keywords
- organic
- display device
- light
- terminal
- elements
- Prior art date
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- 239000010410 layer Substances 0.000 claims abstract description 34
- 239000012044 organic layer Substances 0.000 claims abstract description 20
- 229910052751 metal Inorganic materials 0.000 claims description 24
- 239000002184 metal Substances 0.000 claims description 24
- 239000000853 adhesive Substances 0.000 claims description 20
- 230000001070 adhesive effect Effects 0.000 claims description 20
- 238000007789 sealing Methods 0.000 abstract description 58
- 239000000758 substrate Substances 0.000 abstract description 46
- 230000002093 peripheral effect Effects 0.000 abstract description 3
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000011521 glass Substances 0.000 description 19
- 239000010408 film Substances 0.000 description 18
- 239000000463 material Substances 0.000 description 8
- 239000010409 thin film Substances 0.000 description 8
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 229920005989 resin Polymers 0.000 description 7
- 239000011347 resin Substances 0.000 description 7
- 150000002894 organic compounds Chemical class 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000012790 adhesive layer Substances 0.000 description 4
- 230000005525 hole transport Effects 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 229910052749 magnesium Inorganic materials 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229910052738 indium Inorganic materials 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000012447 hatching Effects 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 229910001148 Al-Li alloy Inorganic materials 0.000 description 1
- 229910019015 Mg-Ag Inorganic materials 0.000 description 1
- NRCMAYZCPIVABH-UHFFFAOYSA-N Quinacridone Chemical compound N1C2=CC=CC=C2C(=O)C2=C1C=C1C(=O)C3=CC=CC=C3NC1=C2 NRCMAYZCPIVABH-UHFFFAOYSA-N 0.000 description 1
- 239000007983 Tris buffer Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical class [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- HFACYLZERDEVSX-UHFFFAOYSA-N benzidine Chemical compound C1=CC(N)=CC=C1C1=CC=C(N)C=C1 HFACYLZERDEVSX-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- XCJYREBRNVKWGJ-UHFFFAOYSA-N copper(II) phthalocyanine Chemical compound [Cu+2].C12=CC=CC=C2C(N=C2[N-]C(C3=CC=CC=C32)=N2)=NC1=NC([C]1C=CC=CC1=1)=NC=1N=C1[C]3C=CC=CC3=C2[N-]1 XCJYREBRNVKWGJ-UHFFFAOYSA-N 0.000 description 1
- 239000013039 cover film Substances 0.000 description 1
- 239000012787 coverlay film Substances 0.000 description 1
- 210000003298 dental enamel Anatomy 0.000 description 1
- 239000002019 doping agent Substances 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 238000005401 electroluminescence Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- RBTKNAXYKSUFRK-UHFFFAOYSA-N heliogen blue Chemical compound [Cu].[N-]1C2=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=NC([N-]1)=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=N2 RBTKNAXYKSUFRK-UHFFFAOYSA-N 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- IBHBKWKFFTZAHE-UHFFFAOYSA-N n-[4-[4-(n-naphthalen-1-ylanilino)phenyl]phenyl]-n-phenylnaphthalen-1-amine Chemical compound C1=CC=CC=C1N(C=1C2=CC=CC=C2C=CC=1)C1=CC=C(C=2C=CC(=CC=2)N(C=2C=CC=CC=2)C=2C3=CC=CC=C3C=CC=2)C=C1 IBHBKWKFFTZAHE-UHFFFAOYSA-N 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- H10K59/80—Constructional details
- H10K59/87—Passivation; Containers; Encapsulations
- H10K59/871—Self-supporting sealing arrangements
-
- 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
- H10K59/179—Interconnections, e.g. wiring lines or terminals
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電子とホールの注
入・再結合により発光する有機化合物材料のエレクトロ
ルミネッセンス（以下、ＥＬという）を利用して、上記
有機化合物材料の薄膜から構成された有機ＥＬ素子を複
数並べて大型表示を行う有機ＥＬ表示装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an organic compound composed of a thin film of the above organic compound using electroluminescence (hereinafter referred to as EL) of an organic compound which emits light by injection and recombination of electrons and holes. The present invention relates to an organic EL display device that displays a large display by arranging a plurality of EL elements.
【０００２】[0002]
【従来の技術】有機ＥＬ素子は、一対の電極をなす陽極
と陰極との間に蛍光性有機化合物を含む薄膜を挟んだ積
層構造を有し、前記薄膜にホール及び電子を注入して再
結合させることにより励起子（エキシトン）を生成さ
せ、この励起子が失活する際の光の放出（蛍光・燐光）
を利用して表示を行う表示素子である。2. Description of the Related Art An organic EL device has a laminated structure in which a thin film containing a fluorescent organic compound is sandwiched between an anode and a cathode, which form a pair of electrodes, and holes and electrons are injected into the thin film and recombined. The exciton is generated by this, and light is emitted when this exciton is deactivated (fluorescence / phosphorescence).
Is a display element that performs display by utilizing the above.
【０００３】図７は一般的な有機ＥＬ素子の基本構造を
示す側断面図である。FIG. 7 is a side sectional view showing a basic structure of a general organic EL element.
【０００４】図７に示すように、有機ＥＬ素子５１は、
絶縁性及び透明性を有するガラス基板５２を基部として
いる。このガラス基板５２の上には、ＩＴＯ（Indium T
in Oxide）からなる透明導電膜が所定パターン形状に成
膜されており、陽極５３を形成している。As shown in FIG. 7, an organic EL element 51 is
It is based on a glass substrate 52 having insulating properties and transparency. On this glass substrate 52, ITO (Indium T
A transparent conductive film made of in oxide is formed in a predetermined pattern shape, and forms an anode 53.
【０００５】図７に示すように、陽極５３の上には有機
化合物材料の薄膜による発光層を含む有機層５４が積層
されている。有機層５４の上には金属薄膜が所定パター
ン形状に成膜されている。この金属薄膜は、例えばＡｌ
−Ｌｉからなり、陰極５５を形成している。そして、陽
極５３と陰極５５とによって挟まれた有機層５４の部分
が発光部５６を形成している。[0005] As shown in FIG. 7, an organic layer 54 including a light emitting layer of a thin film of an organic compound material is laminated on the anode 53. On the organic layer 54, a metal thin film is formed in a predetermined pattern shape. This metal thin film is made of, for example, Al
-Li, and the cathode 55 is formed. The portion of the organic layer 54 sandwiched between the anode 53 and the cathode 55 forms a light emitting section 56.
【０００６】ガラス基板５２の上面には、水分を十分取
り除いた不活性ガス中で金属キャップやガラス基板など
からなる封止部材５７が封着されている。これにより、
内部の素子５８（陽極５３、有機層５４、陰極５５）が
密封された箱状の外囲器５９を構成し、素子５８の表面
が大気に曝されるのを防いでいる。On the upper surface of the glass substrate 52, a sealing member 57 made of a metal cap, a glass substrate, or the like is sealed in an inert gas from which moisture has been sufficiently removed. This allows
The inside element 58 (the anode 53, the organic layer 54, and the cathode 55) forms a sealed box-shaped envelope 59, which prevents the surface of the element 58 from being exposed to the atmosphere.
【０００７】上記のように構成される有機ＥＬ素子５１
では、陽極５３側をプラスとして、陽極５３と陰極５５
との間に電圧を印加して有機層５４に電流を流すと、有
機層５４に対して陽極５３からホールが、陰極５５から
電子がそれぞれ注入される。そして、注入されたホール
と電子が再結合して励起子を生成し、この励起子が失活
する際の光の放出により所望の表示がなされる。その際
の発光部５６の発光は、透明導電膜による陽極５３を介
してガラス基板５２側から観測される。The organic EL element 51 configured as described above
Then, the anode 53 and the cathode 55 are defined as a positive electrode 53 side.
When a current is applied to the organic layer 54 by applying a voltage between them, holes are injected from the anode 53 and electrons are injected from the cathode 55 to the organic layer 54. Then, the injected holes and electrons recombine to generate excitons, and a desired display is performed by emission of light when the excitons are deactivated. At this time, the light emission of the light emitting section 56 is observed from the glass substrate 52 side through the anode 53 made of a transparent conductive film.
【０００８】ところで、上述した構成の有機ＥＬ素子５
１を一つのユニットからなるセルとし、このセルを多数
並べて大型表示装置を作製する場合、各セルの間の寸法
を小さくすることにより、各セルにおける素子の発光部
分の面積率を大きくすることができる。By the way, the organic EL element 5 having the above configuration
When a large display is manufactured by arranging a number of cells as one unit and arranging a large number of the cells, it is possible to increase the area ratio of the light emitting portion of the element in each cell by reducing the dimension between the cells. it can.
【０００９】[0009]
【発明が解決しようとする課題】しかしながら、大型の
有機ＥＬ素子を１枚の基板で製造する場合、基板の全面
にわたって素子を均一に形成することは困難である。し
かも、形成された素子が不均一であると、表示装置とし
て構成した場合に画面に輝度むらが生じることになる。
このため、素子の均一性が保たれる寸法で形成された有
機ＥＬ素子を一つのセルとし、このセルを多数並べて配
置することにより大画面表示装置を実現している。However, when a large-sized organic EL device is manufactured on a single substrate, it is difficult to form the device uniformly over the entire surface of the substrate. In addition, if the formed elements are not uniform, the screen will have uneven brightness when configured as a display device.
For this reason, a large-screen display device is realized by arranging an organic EL element formed with dimensions that maintain the uniformity of the element as one cell and arranging a large number of such cells.
【００１０】図８（ａ），（ｂ）は有機ＥＬ素子のセル
を多数並べて大画面表示装置をなす有機ＥＬ表示装置を
実現する場合の電極配線の引き出し構造の一例を示す平
面図及び側面図である。FIGS. 8 (a) and 8 (b) are a plan view and a side view showing an example of a lead-out structure of an electrode wiring in a case where a large-screen display device is realized by arranging a large number of organic EL element cells. It is.
【００１１】なお、図８（ａ），（ｂ）の例では、図７
に示す有機ＥＬ素子５１を基本構成とする２つのセルを
縦に平行に並べた状態のみを示しているが、実際には有
機ＥＬ素子５１のセルをマトリックス状に複数並べて大
画面表示装置が構成されるものである。In the example of FIGS. 8A and 8B, FIG.
2 shows only a state in which two cells having the basic configuration of the organic EL element 51 are arranged vertically and in parallel, but in practice, a large screen display device is configured by arranging a plurality of cells of the organic EL element 51 in a matrix. Is what is done.
【００１２】この有機ＥＬ表示装置６１では、図８
（ａ），（ｂ）に示すように、セルをなす各有機ＥＬ素
子５１のガラス基板５２の下端部が、外囲器５９の内部
から外部に突出した延出部５２ａをなしている。また、
図示はしないが、各有機ＥＬ素子５１のガラス基板５２
上の各発光部５６からの陽極及び陰極の配線は、ガラス
基板５２の延出部５２ａの端部まで引き出されてパター
ン形成されている。そして、各セルの有機ＥＬ素子５１
の各発光部５６からの陽極及び陰極の配線は、テープ状
の可撓性ケーブル６２を介して外部の駆動回路（不図
示）に接続される。In this organic EL display device 61, FIG.
As shown in (a) and (b), the lower end of the glass substrate 52 of each organic EL element 51 forming a cell forms an extended portion 52a projecting from the inside of the envelope 59 to the outside. Also,
Although not shown, the glass substrate 52 of each organic EL element 51
The wirings of the anode and the cathode from each of the light emitting portions 56 are drawn out to the end of the extending portion 52 a of the glass substrate 52 and are patterned. Then, the organic EL element 51 of each cell
The wiring of the anode and the cathode from each of the light emitting units 56 is connected to an external drive circuit (not shown) via a tape-shaped flexible cable 62.
【００１３】しかしながら、図８（ａ），（ｂ）に示す
有機ＥＬ表示装置６１において、各有機ＥＬ素子５１の
各発光部５６の陽極及び陰極の配線は、ガラス基板５２
の延出部５２ａの端部まで引き出され、この端部から可
撓性ケーブル６２を介して外部の駆動回路に接続されて
いるので、少なくともガラス基板５２の延出部５２ａの
幅分だけセルをなす各有機ＥＬ素子５１の間の間隔が広
くなり、発光部分の開口率を大きくできなかった。ま
た、各有機ＥＬ素子５１の外囲器５９の封止部分の寸法
と、陽極及び陰極の配線を引き出すための寸法とにより
画素ピッチが決まるので、画素ピッチを小さくすること
が困難であった。However, in the organic EL display device 61 shown in FIGS. 8A and 8B, the wiring of the anode and the cathode of each light emitting portion 56 of each organic EL element 51 is made of a glass substrate 52.
Is extended to the end of the extending portion 52a of the glass substrate 52 and is connected to an external driving circuit via a flexible cable 62 from the end, so that the cell is at least as large as the width of the extending portion 52a of the glass substrate 52. The distance between the organic EL elements 51 to be formed was widened, and the aperture ratio of the light emitting portion could not be increased. Further, since the pixel pitch is determined by the size of the sealing portion of the envelope 59 of each organic EL element 51 and the size for leading out the anode and cathode wirings, it has been difficult to reduce the pixel pitch.
【００１４】このように、図８（ａ），（ｂ）に示す有
機ＥＬ表示装置６１では、陽極及び陰極の配線の引き出
しのためのスペースと、封止部材５７を封着するための
封止部分のスペースとがガラス基板５１上に必要不可欠
となり、画素間のピッチが広くなるという問題があっ
た。しかも、上記封止部分は、素子を水分から保護し、
有機ＥＬ素子特有の問題であるダークスポットの発生及
び成長を抑制するためには必要不可欠であった。As described above, in the organic EL display device 61 shown in FIGS. 8A and 8B, the space for leading out the wiring of the anode and the cathode and the sealing for sealing the sealing member 57 are provided. There is a problem that the space of the part is indispensable on the glass substrate 51, and the pitch between pixels is widened. Moreover, the sealing portion protects the element from moisture,
It was indispensable to suppress the generation and growth of dark spots, which are problems specific to organic EL elements.
【００１５】ところで、多数の有機ＥＬ素子を並べて大
画面表示装置を実現したものとしては、特開平５−２０
５８７５号公報に開示される有機ＥＬ表示装置も知られ
ている。A large-screen display device in which a large number of organic EL elements are arranged is disclosed in Japanese Patent Application Laid-Open No. 5-20 / 1993.
An organic EL display device disclosed in Japanese Patent No. 5875 is also known.
【００１６】図９（ａ）は特開平５−２０５８７５号公
報に開示される有機ＥＬ表示装置の構成図、図９（ｂ）
は図９（ａ）におけるＡ−Ａ部分の断面図、図９（ｃ）
は図９（ａ）におけるＢ−Ｂ部分の断面図である。FIG. 9A is a configuration diagram of an organic EL display device disclosed in Japanese Patent Application Laid-Open No. 5-205875, and FIG.
FIG. 9A is a cross-sectional view taken along the line AA in FIG.
FIG. 10 is a cross-sectional view taken along the line BB in FIG.
【００１７】この有機ＥＬ表示装置７１は、図９（ａ）
に示すように、１６枚の有機ＥＬ素子体としての小型パ
ネル７２が４行４列のマトリックス型に配列され、互い
に電気的に接続されて所望の大きさの画面となる大型パ
ネル７３を構成するものである。This organic EL display device 71 is shown in FIG.
As shown in the figure, 16 small panels 72 as organic EL elements are arranged in a matrix of 4 rows and 4 columns, and are electrically connected to each other to form a large panel 73 having a screen of a desired size. Things.
【００１８】図９（ａ）に示すように、素子基板７４の
一方の主面７４ａには、透明電極７５、有機ＥＬ層７
６、金属電極７７の積層からなる発光部７８が形成され
ている。これにより、有機ＥＬ素子体による小型パネル
７２が構成される。As shown in FIG. 9A, a transparent electrode 75 and an organic EL layer 7 are formed on one main surface 74a of the element substrate 74.
6. A light emitting section 78 composed of a stack of metal electrodes 77 is formed. Thus, a small panel 72 composed of the organic EL element is formed.
【００１９】図９（ｂ）に示すように、各小型パネル７
２における透明電極７５は、その一部が素子基板７４の
側面７４ｂまで形成されて延長部７５ａをなしている。
そして、隣接する小型パネル７２の透明電極７５の延長
部７５ａ同士は、異方性導電接着層７９を介して電気的
に接続されている。As shown in FIG. 9B, each small panel 7
A part of the transparent electrode 75 in 2 is formed up to the side surface 74b of the element substrate 74 to form an extension 75a.
The extending portions 75 a of the transparent electrodes 75 of the adjacent small panels 72 are electrically connected to each other via an anisotropic conductive adhesive layer 79.
【００２０】図９（ｃ）に示すように、各小型パネル７
２における金属電極７７も、その一部が素子基板７４の
側面７４ｃまで形成されて延長部７７ａをなしている。
そして、隣接する小型パネル７２の金属電極７７の延長
部７７ａ同士は、異方性導電接着層７９を介して電気的
に接続されている。As shown in FIG. 9C, each small panel 7
Part of the metal electrode 77 in 2 also extends to the side surface 74c of the element substrate 74, forming an extension 77a.
The extended portions 77 a of the metal electrodes 77 of the adjacent small panels 72 are electrically connected to each other via an anisotropic conductive adhesive layer 79.
【００２１】上記のようにして構成された大型パネル７
３には、各透明電極７５及び金属電極７７をそれぞれマ
トリックス型に制御する駆動部８０が電気的に接続され
ている。The large panel 7 constructed as described above
A drive unit 80 for controlling each of the transparent electrodes 75 and the metal electrodes 77 in a matrix type is electrically connected to the drive unit 3.
【００２２】ところで、上記のように複数の有機ＥＬ素
子５１（有機ＥＬ素子体としての小型パネル７２）を並
べて大型表示装置を構成する場合、全ての有機ＥＬ素子
が一斉に寿命となることはなく、通常は各有機ＥＬ素子
毎に寿命にバラツキがあり、各有機ＥＬ素子が点灯する
積算時間も表示内容によって異なる。このため、保守・
点検の都合を考慮して、各有機ＥＬ素子を各々独立駆動
できることが望まれる。When a large display is constructed by arranging a plurality of organic EL elements 51 (small panel 72 as an organic EL element body) as described above, all the organic EL elements do not have a lifetime at the same time. Normally, the life span of each organic EL element varies, and the accumulated time during which each organic EL element is turned on also differs depending on the display content. For this reason, maintenance
It is desired that each organic EL element can be independently driven in consideration of the convenience of inspection.
【００２３】しかしながら、上述した図９（ａ）〜
（ｃ）に示す有機ＥＬ表示装置７１では、同列に位置す
る透明電極７５の延長部７５ａ同士を異方性導電接着層
７９を介して駆動部８０に電気的に接続し、同行に位置
する金属電極７７の延長部７７ａ同士を異方性導電接着
層７９を介して駆動部８０に電気的に接続する構成であ
り、ある有機ＥＬ素子体７２（図９（ａ）の実線のハッ
チングで示す部分）が破損し、この破損した有機ＥＬ素
子体７２と隣接する有機ＥＬ素子体７２との間の透明電
極７５や金属電極７７の導通が断たれると、この破損し
た有機ＥＬ素子体７２と同じ行及び同じ列の有機ＥＬ素
子体７２（図９（ｂ）の破線のハッチングで示す部分）
を駆動できないという問題を招く。However, FIG.
In the organic EL display device 71 shown in (c), the extending portions 75a of the transparent electrodes 75 located in the same row are electrically connected to the driving section 80 via the anisotropic conductive adhesive layer 79, and the metal located in the same row is connected. In this configuration, the extended portions 77a of the electrodes 77 are electrically connected to the driving portion 80 via the anisotropic conductive adhesive layer 79, and a certain organic EL element body 72 (portion indicated by solid-line hatching in FIG. 9A). ) Is damaged, and when the conduction of the transparent electrode 75 or the metal electrode 77 between the damaged organic EL element 72 and the adjacent organic EL element 72 is cut off, the same as the damaged organic EL element 72 The organic EL element body 72 in the row and in the same column (portion indicated by the broken line hatching in FIG. 9B)
Cannot be driven.
【００２４】そこで、本発明は、上記問題点に鑑みてな
されたものであり、一つのセルをなす各有機ＥＬ素子の
間の間隔を小さくして発光部分の面積率を大きくでき、
更には故障した有機ＥＬ素子の影響を受けることなく各
有機ＥＬ素子を駆動することができる有機ＥＬ表示装置
を提供することにある。In view of the above, the present invention has been made in view of the above problems, and it is possible to reduce the distance between the organic EL elements forming one cell to increase the area ratio of the light emitting portion.
Another object of the present invention is to provide an organic EL display device that can drive each organic EL element without being affected by a failed organic EL element.
【００２５】[0025]
【課題を解決するための手段】上記目的を達成するた
め、請求項１の発明は、少なくとも一方が透光性を有す
る一対の電極間に発光層を含む有機層が挟まれた素子が
箱状の外囲器内に形成された有機ＥＬ素子を複数並べて
大型表示を行う有機ＥＬ表示装置において、前記有機Ｅ
Ｌ素子それぞれの前記一対の電極の配線は、当該有機Ｅ
Ｌ素子の前記外囲器内の発光部間を接続点とし、該接続
点から前記発光部の発光を観察する面と反対側に位置す
る前記外囲器の面の外側まで引き出されていることを特
徴とする。In order to achieve the above object, the invention according to claim 1 is directed to a device in which an organic layer including a light emitting layer is sandwiched between a pair of electrodes having at least one light transmitting property. An organic EL display device for displaying a large display by arranging a plurality of organic EL elements formed in the envelope of the organic EL device.
The wiring of the pair of electrodes of each of the L elements is the organic E
A connection point is formed between the light emitting units in the envelope of the L element, and the L element is drawn from the connection point to the outside of the surface of the envelope located on the side opposite to the surface on which light emission of the light emitting unit is observed. It is characterized by.
【００２６】請求項２の発明は、少なくとも一方が透光
性を有する一対の電極間に発光層を含む有機層が挟まれ
た素子が箱状の外囲器内に形成された有機ＥＬ素子を複
数並べて大型表示を行う有機ＥＬ表示装置において、前
記有機ＥＬ素子それぞれの前記一対の電極の配線は、当
該有機ＥＬ素子の前記外囲器内の発光部間を接続点と
し、該接続点から前記発光部の発光を観察する面と反対
側に位置する前記外囲器の面の外側まで引き出されて外
部の駆動回路に接続されており、前記有機ＥＬ素子毎に
駆動可能とされていることを特徴とする。According to a second aspect of the present invention, there is provided an organic EL device in which an element in which an organic layer including a light emitting layer is sandwiched between a pair of electrodes having at least one of a light transmitting property is formed in a box-shaped envelope. In the organic EL display device which performs a large-sized display by arranging a plurality of the organic EL elements, the wiring of the pair of electrodes of each of the organic EL elements is a connection point between the light emitting portions in the envelope of the organic EL element, and the connection point is It is drawn out to the outside of the surface of the envelope located on the side opposite to the surface on which light emission of the light emitting unit is observed and connected to an external drive circuit, and can be driven for each of the organic EL elements. Features.
【００２７】請求項３の発明は、請求項１又は２の有機
ＥＬ表示装置において、前記発光部の発光を観察する面
と反対側に位置する前記外囲器の面には、前記接続点で
前記一対の電極の配線と接触する金属性の端子が取り付
けられていることを特徴とする。According to a third aspect of the present invention, in the organic EL display device according to the first or second aspect, the surface of the envelope located on a side opposite to a surface on which light emission of the light emitting unit is observed is provided at the connection point. A metal terminal that is in contact with the wiring of the pair of electrodes is attached.
【００２８】請求項４の発明は、請求項３の有機ＥＬ表
示装置において、前記端子の先端部は、導電性接着剤に
より前記接続点に固定されていることを特徴とする。According to a fourth aspect of the present invention, in the organic EL display device of the third aspect, a tip of the terminal is fixed to the connection point by a conductive adhesive.
【００２９】請求項５の発明は、請求項３の有機ＥＬ表
示装置において、前記端子の先端部に導電部材が設けら
れていることを特徴とする。According to a fifth aspect of the present invention, in the organic EL display device of the third aspect, a conductive member is provided at a tip of the terminal.
【００３０】請求項６の発明は、請求項３の有機ＥＬ表
示装置において、前記端子は、先端部が前記接続点に押
圧接触するようにバネ性を有していることを特徴とす
る。According to a sixth aspect of the present invention, in the organic EL display device according to the third aspect, the terminal has a spring property so that a tip portion thereof comes into pressure contact with the connection point.
【００３１】請求項７の発明は、請求項６の有機ＥＬ表
示装置において、前記端子が押圧接触する前記接続点上
の電極の下部に位置して金属膜が形成されていることを
特徴とする。According to a seventh aspect of the present invention, in the organic EL display device of the sixth aspect, a metal film is formed below the electrode on the connection point where the terminal is in pressure contact. .
【００３２】[0032]
【発明の実施の形態】図１は本発明による有機ＥＬ表示
装置の外観を示す平面図、図２（ａ）は図１の有機ＥＬ
表示装置の各セルを構成する有機ＥＬ素子の側断面図、
図２（ｂ）は図２（ａ）の平面図である。FIG. 1 is a plan view showing the appearance of an organic EL display device according to the present invention, and FIG.
Side sectional view of an organic EL element constituting each cell of the display device,
FIG. 2B is a plan view of FIG.
【００３３】図１に示すように、本例における有機ＥＬ
表示装置１は、有機ＥＬ素子２を一つのユニットからな
るセルとしている。そして、このセルをなす有機ＥＬ素
子２をマトリックス状（図１の例では２行２列）に多数
並べることにより大型表示装置を構成している。As shown in FIG. 1, the organic EL in this embodiment
The display device 1 uses the organic EL element 2 as a cell composed of one unit. Then, a large-sized display device is constituted by arranging a large number of organic EL elements 2 constituting the cells in a matrix (2 rows and 2 columns in the example of FIG. 1).
【００３４】図２に示すように、有機ＥＬ素子２は、絶
縁性及び透光性を有するガラス等の矩形状の基板３を基
部としている。基板３の上には電極用配線４ａを含む第
一電極としての陽極４が形成されている。陽極４は、例
えばＩＴＯ（Indium Tin Oxide）等の透明導電膜が真空
蒸着法、スパッタ法等のＰＶＤ（Physical Vapor Depos
ition ）法により所定膜厚（例えば１００ｎｍ前後）で
成膜され、更にフォトレジストパターンによるエッチン
グで所定パターン形状（図２の例では、列方向に平行な
ストライプ状）にパターンニングされた透明電極であ
る。As shown in FIG. 2, the organic EL element 2 is based on a rectangular substrate 3 such as glass having an insulating property and a light transmitting property. On the substrate 3, an anode 4 as a first electrode including an electrode wiring 4a is formed. The anode 4 is made of, for example, a transparent conductive film such as ITO (Indium Tin Oxide) made of PVD (Physical Vapor Depos) such as a vacuum evaporation method and a sputtering method.
The transparent electrode is formed to have a predetermined thickness (for example, about 100 nm) by the ition method, and is patterned in a predetermined pattern shape (in the example of FIG. 2, stripes parallel to the column direction) by etching with a photoresist pattern. is there.
【００３５】陽極４の上には、例えば分子線蒸着法、抵
抗加熱法等のＰＶＤ法により、有機化合物材料の薄膜か
らなる発光層を含む有機層５が発光部の形状（図２の例
では、略正方形状）に合わせて積層形成されている。有
機層５は、例えば陽極４の上に成膜される正孔注入層と
しての銅フタロシアニン（ＣｕＰｃ）有機膜と、ＣｕＰ
ｃ有機膜の上に成膜される正孔輸送層としてのα−ＮＰ
Ｄ（Ｂｉｓ（Ｎ−（１−naphtyl −Ｎ−phneyl）benzid
ine ）有機膜と、α−ＮＰＤ有機膜の上に成膜される発
光層兼電子輸送層としてのトリス（８−キノリノラト）
アルミニウム（Ａｌｑ3 ）有機膜の３層構造からなる。On the anode 4, an organic layer 5 including a light-emitting layer formed of a thin film of an organic compound material is formed by a PVD method such as a molecular beam evaporation method or a resistance heating method in the shape of a light-emitting portion (in the example of FIG. 2). (Substantially square shape). The organic layer 5 includes, for example, a copper phthalocyanine (CuPc) organic film as a hole injection layer formed on the anode 4, and a CuP
α-NP as hole transport layer formed on organic film c
D (Bis (N- (1-naphtyl-N-phneyl) benzid
ine) Tris (8-quinolinolato) as an emission layer and an electron transport layer formed on an organic film and an α-NPD organic film
It has a three-layer structure of an aluminum (Alq 3 ) organic film.
【００３６】なお、有機層５は、上記の他、発光層と電
荷輸送層（正孔輸送層、正孔注入・輸送層、電子注入
層、電子注入・輸送層等）との組合せで構成することが
できる。具体的には、発光層１層のみの構造、発光層と
正孔輸送層の２層構造、発光層と電子注入層の２層構
造、正孔輸送層と発光層と電子注入層の３層構造等が考
えられる。The organic layer 5 is composed of a combination of a light emitting layer and a charge transport layer (a hole transport layer, a hole injection / transport layer, an electron injection layer, an electron injection / transport layer, etc.) in addition to the above. be able to. Specifically, the structure includes only one light-emitting layer, a two-layer structure including a light-emitting layer and a hole transport layer, a two-layer structure including a light-emitting layer and an electron injection layer, and a three-layer structure including a hole transport layer, a light-emitting layer, and an electron injection layer. Structure and the like are conceivable.
【００３７】上記発光層の発光材料としては、発光層そ
のものを発光させる場合には、例えばＡｌｑ3 やジスチ
ルアリーレン系化合物等が使用される。また、発光層に
別の発光材料（ドーパント）を微量ドーピングして発光
させる場合には、ドーパントとしてキナクリドン（Ｑ
ｄ）やレーザ用の色素等が使用される。As the light emitting material of the light emitting layer, when the light emitting layer itself emits light, for example, Alq 3 or a distyrylene compound is used. When light is emitted by doping the light emitting layer with a small amount of another light emitting material (dopant), quinacridone (Q
d) and dyes for laser and the like are used.
【００３８】また、上記電子注入層としては、電子の注
入をし易くするため、例えばＬｉ、Ｎａ、Ｍｇ、Ｃａ等
の仕事関数の小さい金属材料単体、Ａｌ：Ｌｉ、Ｍｇ：
Ｉｎ、Ｍｇ：Ａｇ、ＬｉＦ等の仕事関数の小さい合金が
使用される。The electron injecting layer is preferably made of a metal material having a small work function, such as Li, Na, Mg, Ca, etc., Al: Li, Mg:
An alloy having a small work function such as In, Mg: Ag, and LiF is used.
【００３９】有機層５の上には、電極用配線６ａを含む
第二電極としての陰極６が形成されている。陰極６は、
金属薄膜、例えばＡｌ、Ｌｉ、Ｍｇ、Ａｇ、Ｉｎ等の仕
事関数の小さい金属材料単体やＡｌ−Ｌｉ、Ｍｇ−Ａｇ
等の仕事関数の小さい合金からなる。陰極６は、例えば
分子線蒸着法、抵抗加熱法等のＰＶＤ法により所定膜厚
（例えば数１０ｎｍ〜数１００ｎｍ）で所定パターン形
状（図２の例では、陽極４と直交する行方向に平行なス
トライプ状）に形成される。On the organic layer 5, a cathode 6 as a second electrode including an electrode wiring 6a is formed. The cathode 6 is
Metal thin film, for example, a metal material having a small work function such as Al, Li, Mg, Ag, In or Al-Li, Mg-Ag
Made of an alloy having a small work function. The cathode 6 has a predetermined pattern shape (for example, several tens nm to several hundred nm) in a predetermined pattern shape (for example, several tens to several hundreds of nm) by a PVD method such as a molecular beam evaporation method or a resistance heating method (in the example of FIG. (Stripe shape).
【００４０】そして、図１に示す例では、上記陽極４、
有機層５及び陰極６によって４行４列の素子７を形成し
ており、陽極４と陰極６によって挟まれた有機層５の部
分（図１の略正方形状の部分）が発光部（画素）８を形
成している。In the example shown in FIG.
The organic layer 5 and the cathode 6 form an element 7 in 4 rows and 4 columns, and the portion of the organic layer 5 sandwiched between the anode 4 and the cathode 6 (substantially square portion in FIG. 1) is a light emitting portion (pixel) 8 are formed.
【００４１】基板３の外周部分には、水分を極力除去し
た不活性ガス（例えばドライ窒素）やドライエア等のド
ライ雰囲気において、基板３と略同一の表面積を有する
封止部材９が有機接着剤からなるシール膜１０によって
固着されている。これにより、内部が気密保持された外
縁部に突出部分の無い箱形状の外囲器１１が構成され、
基板３の内面に積層形成された素子７が保護される。A sealing member 9 having substantially the same surface area as the substrate 3 is formed on the outer peripheral portion of the substrate 3 from an organic adhesive in a dry atmosphere such as an inert gas (eg, dry nitrogen) or dry air from which water is removed as much as possible. Is fixed by a sealing film 10. As a result, a box-shaped envelope 11 having no protruding portion at the outer edge portion where the inside is airtightly held is configured,
The elements 7 laminated on the inner surface of the substrate 3 are protected.
【００４２】封止部材９は、例えば金属、ガラス、セラ
ミックス、樹脂、ほうろう等の種々の材料で構成するこ
とができる。封止部材９には、接続点Ｐとなる基板３上
の発光部（画素）８間に位置して貫通穴１２が形成され
ている。貫通穴１２は、基板３上の陽極４の電極用配線
４ａ及び陰極６の電極用配線６ａの配線数と同数だけ形
成される。The sealing member 9 can be made of various materials such as metal, glass, ceramics, resin, and enamel. In the sealing member 9, a through hole 12 is formed between the light emitting portions (pixels) 8 on the substrate 3 serving as connection points P. The through holes 12 are formed by the same number as the number of the electrode wires 4 a of the anode 4 and the number of the electrode wires 6 a of the cathode 6 on the substrate 3.
【００４３】貫通穴１２には、導電性を有する金属材料
のピンからなる端子１３（１３Ａ）が挿通されて固定さ
れている。図２に示す端子１３Ａは、棒状の金属ピンで
構成され、両端部分が封止部材９の内面９ａ及び外面９
ｂから所定長さ突出した状態で貫通穴１２に固定されて
いる。また、端子１３Ａは、封止部材９を基板３に封着
した際、先端面１３ａが基板３上の陽極４の電極用配線
４ａ及び陰極６の電極用配線６ａと接続点Ｐで圧着する
ように貫通穴１２に固定される。A terminal 13 (13A) made of a pin made of a conductive metal material is inserted into and fixed to the through hole 12. The terminal 13 </ b> A shown in FIG. 2 is configured by a rod-shaped metal pin, and both ends are formed on the inner surface 9 a and the outer surface 9
b is fixed to the through hole 12 in a state of protruding a predetermined length. Also, when the sealing member 9 is sealed to the substrate 3, the terminal 13 A is pressed at the connection point P at the connection point P with the tip surface 13 a of the terminal 4 on the substrate 3 with the electrode wiring 4 a of the anode 4 and the electrode wiring 6 a of the cathode 6. Is fixed to the through hole 12.
【００４４】貫通穴１２に対する端子１３Ａの固定に
は、樹脂系の接着剤（例えばエポキシ樹脂系接着剤）が
用いられるが、封止部材９がガラスで構成される場合に
は、熱膨張率が同等の低融点ガラスを用いるのが好まし
い。また、封止部材９が金属で構成される場合には、端
子１３Ａが挿通される貫通穴１２に絶縁処理が施され
る。A resin-based adhesive (for example, an epoxy resin-based adhesive) is used to fix the terminal 13A to the through-hole 12. However, when the sealing member 9 is made of glass, the coefficient of thermal expansion is low. It is preferred to use an equivalent low melting glass. When the sealing member 9 is made of metal, the through-hole 12 through which the terminal 13A is inserted is subjected to insulation treatment.
【００４５】ところで、図２（ａ），（ｂ）に示す例で
は、封止部材９を基板３に封着した際、端子１３Ａの先
端面１３ａが陽極４の電極用配線４ａ及び陰極６の電極
用配線６ａに圧着し、端子１３Ａと陽極４の電極用配線
４ａとの間、及び陰極６の電極用配線４ａ，６ａとの間
を電気的に接続する構成としているが、端子１３Ａの先
端面１３ａと対向する基板３上の陽極４及び陰極６の表
面に導電性接着剤を塗布しておいてもよい。この構成に
よれば、端子１３Ａの先端面１３ａと陽極４の電極用配
線４ａ及び陰極６の電極用配線６ａとの間を導電性接着
剤を介してより確実に固定することができる。しかも、
導電性接着剤として例えばＡｇを含有したペースト状の
接着剤を使用すれば、端子１３Ａと陽極４の電極用配線
４ａ及び陰極６の電極用配線６ａとの間の接触抵抗を下
げることができる。この構成は、後述する図３（ａ）〜
（ｄ）の端子１３Ｂ〜１３Ｅに採用することもできる。By the way, in the example shown in FIGS. 2A and 2B, when the sealing member 9 is sealed to the substrate 3, the tip surface 13 a of the terminal 13 A is connected to the electrode wiring 4 a of the anode 4 and the cathode 6. The electrode wire 6a is crimped to electrically connect the terminal 13A to the electrode wire 4a of the anode 4 and to the electrode wire 4a, 6a of the cathode 6; A conductive adhesive may be applied to the surfaces of the anode 4 and the cathode 6 on the substrate 3 facing the surface 13a. According to this configuration, the tip surface 13a of the terminal 13A and the electrode wiring 4a of the anode 4 and the electrode wiring 6a of the cathode 6 can be more reliably fixed via the conductive adhesive. Moreover,
If, for example, a paste adhesive containing Ag is used as the conductive adhesive, the contact resistance between the terminal 13A and the electrode wiring 4a of the anode 4 and the electrode wiring 6a of the cathode 6 can be reduced. This configuration is shown in FIGS.
(D) can be adopted for the terminals 13B to 13E.
【００４６】また、端子１３Ａの先端面１３ａに導電部
材を設ける構成としてもよい。この導電部材としては、
例えば金等のように抵抗の低い方ものが好ましい。この
構成によれば、端子１３Ａと陽極４の電極用配線４ａ及
び陰極６の電極用配線６ａとの間の接続がより確実とな
り、安定した接続が行える。Further, a configuration may be adopted in which a conductive member is provided on the distal end surface 13a of the terminal 13A. As this conductive member,
For example, a material having low resistance such as gold is preferable. According to this configuration, the connection between the terminal 13A and the electrode wiring 4a of the anode 4 and the electrode wiring 6a of the cathode 6 becomes more reliable, and stable connection can be performed.
【００４７】次に、上記有機ＥＬ表示装置１の各セルを
なす有機ＥＬ素子２の作製方法について説明する。Next, a method of manufacturing the organic EL element 2 forming each cell of the organic EL display device 1 will be described.
【００４８】なお、有機ＥＬ素子２を封止するための封
止部材９は、ガラスやセラミックス、プラスチックなど
絶縁性のものが好ましいが、成形上不具合があれば封止
部材９を金属で構成しても良い。その場合、金属による
封止部材９と端子１３Ａとの間の絶縁が取れるように、
予め貫通穴１２の内面に絶縁処理を施しておく。The sealing member 9 for sealing the organic EL element 2 is preferably made of an insulating material such as glass, ceramics or plastic. However, if there is a problem in molding, the sealing member 9 is made of metal. May be. In that case, the insulation between the sealing member 9 and the terminal 13A made of metal can be obtained.
An insulation treatment is performed on the inner surface of the through hole 12 in advance.
【００４９】有機ＥＬ素子２を作製するにあたっては、
封止部材９の所定の位置に端子１３Ａを挿通するための
貫通穴１２を開ける。そして、この貫通穴１２に端子１
３Ａを挿通し、端子１３Ａを封止部材９に固定する。封
止部材９に対する端子１３Ａの固定は、樹脂系接着剤
（例えばエポキシ樹脂系接着剤）で行う。封止部材９が
ガラスで構成される場合には低融点ガラスを用いる。In manufacturing the organic EL device 2,
A through hole 12 for inserting the terminal 13A into a predetermined position of the sealing member 9 is formed. The terminal 1 is inserted into the through hole 12.
3A is inserted, and the terminal 13A is fixed to the sealing member 9. The terminal 13A is fixed to the sealing member 9 with a resin adhesive (for example, an epoxy resin adhesive). When the sealing member 9 is made of glass, low-melting glass is used.
【００５０】なお、有機ＥＬ素子２は、水分に対して非
常に弱いので、封止部材９と端子１３Ａを固定する貫通
穴１２の部分から透湿しないようにする。Since the organic EL element 2 is extremely weak against moisture, moisture is prevented from permeating through the through hole 12 for fixing the sealing member 9 and the terminal 13A.
【００５１】そして、基板３上に陽極４、有機層５、陰
極６を順次成膜して素子７を形成した後、ドライ雰囲気
（例えばドライ窒素）において、封止部材９の周囲（封
止部分）に紫外線硬化樹脂（接着剤）を塗布し、封止部
材９と基板３とを密着させ、紫外線硬化樹脂が塗布され
た外周部分にて封止部材９と基板３とを貼り合わせる。
そして、紫外線照射により紫外線硬化樹脂を硬化する
と、内部が気密保持された外囲器１１が構成される。そ
の際、封止部材９の貫通穴１２に固定された端子１３Ａ
の先端面１３ａは、基板３上の陽極４及び陰極６の対応
する電極用配線４ａ，６ａに各々圧着される。Then, after the anode 4, the organic layer 5, and the cathode 6 are sequentially formed on the substrate 3 to form the element 7, the surroundings of the sealing member 9 (the sealing portion) are formed in a dry atmosphere (for example, dry nitrogen). ), An ultraviolet curable resin (adhesive) is applied, the sealing member 9 and the substrate 3 are brought into close contact with each other, and the sealing member 9 and the substrate 3 are bonded together at the outer peripheral portion where the ultraviolet curable resin is applied.
Then, when the ultraviolet curable resin is cured by ultraviolet irradiation, the envelope 11 whose inside is kept airtight is formed. At this time, the terminal 13A fixed to the through hole 12 of the sealing member 9
Are pressed to the corresponding electrode wirings 4a and 6a of the anode 4 and the cathode 6 on the substrate 3, respectively.
【００５２】このように、外囲器１１を構成する工程に
おいて、基板３上の陽極４及び陰極６の電極用配線４
ａ，６ａは、外囲器１１内の発光部（画素）８間を接続
点とし、封止部材９の貫通穴１２に固定された端子１３
Ａと接続される。これにより、基板３上の陽極４及び陰
極６の電極用配線４ａ，６ａから端子１３Ａを介して封
止部材９の外側まで陽極４及び陰極６の配線の取り出し
を行うことができる。そして、素子７を駆動するための
駆動回路（外部回路）に端子１３Ａを接続すれば、駆動
回路からの駆動信号を端子１３Ａを介して基板３上の陽
極４及び陰極６に供給することができる。As described above, in the process of forming the envelope 11, the electrode wiring 4 of the anode 4 and the cathode 6 on the substrate 3 is formed.
Reference numerals a and 6a denote terminals 13 fixed to the through holes 12 of the sealing member 9 with the connection points between the light emitting portions (pixels) 8 in the envelope 11.
A is connected. Thus, the wirings of the anode 4 and the cathode 6 can be taken out from the electrode wirings 4a and 6a of the anode 4 and the cathode 6 on the substrate 3 to the outside of the sealing member 9 via the terminal 13A. When the terminal 13A is connected to a drive circuit (external circuit) for driving the element 7, a drive signal from the drive circuit can be supplied to the anode 4 and the cathode 6 on the substrate 3 via the terminal 13A. .
【００５３】次に、図３（ａ）〜（ｄ）は図１の各有機
ＥＬ素子２における陽極４及び陰極５の電極用配線４
ａ，６ａとの間の接続を行うための端子１３（１３Ｂ〜
１３Ｅ）の構成例を示す図である。Next, FIGS. 3A to 3D show electrode wirings 4 of the anode 4 and the cathode 5 in each organic EL element 2 of FIG.
terminals 13 (13B to 13B) for making connections between
13E) is a diagram illustrating a configuration example.
【００５４】図３（ａ）〜（ｄ）に示す端子１３Ｂ〜１
３Ｅは、基板３上の陽極４の電極用配線４ａ及び陰極６
の電極用配線６ａとの間の接続が確実に行えるべく、バ
ネ性を有したものである。The terminals 13B to 13B shown in FIGS.
3E denotes an electrode wiring 4a of the anode 4 on the substrate 3 and a cathode 6
It has a spring property so that the connection with the electrode wiring 6a can be surely performed.
【００５５】図３（ａ）に示す端子１３Ｂは、渦巻き状
に巻かれた部分を有し、この渦巻き状部分から上下に引
き出された一端が封止部材９の貫通穴１２に固定され、
他端が上記渦巻き状部分のバネ力により陽極４の電極用
配線４ａ及び陰極６の電極用配線６ａに押圧接触するも
のである。The terminal 13B shown in FIG. 3 (a) has a spirally wound portion, and one end vertically pulled out from the spirally shaped portion is fixed to the through hole 12 of the sealing member 9.
The other end is in pressure contact with the electrode wiring 4a of the anode 4 and the electrode wiring 6a of the cathode 6 by the spring force of the spiral part.
【００５６】図３（ｂ）に示す端子１３Ｃは、先端部分
が所定角度折曲されており、この折曲部分の一端が封止
部材９の貫通穴１２に固定され、他端の水平部分が上記
折曲部分のバネ力により陽極４の電極用配線４ａ及び陰
極６の電極用配線６ａに押圧接触するものである。The terminal 13C shown in FIG. 3 (b) has a tip portion bent at a predetermined angle, one end of the bent portion is fixed to the through hole 12 of the sealing member 9, and the other horizontal portion is fixed. Due to the spring force of the bent portion, the electrode wire 4a of the anode 4 and the electrode wire 6a of the cathode 6 are pressed and contacted.
【００５７】図３（ｃ）に示す端子１３Ｄは、Ｚ字状に
折曲され、この折曲部分の一端が封止部材９の貫通穴１
２に固定され、他端が上記折曲部分のバネ力により陽極
４の電極用配線４ａ及び陰極６の電極用配線６ａに押圧
接触するものである。The terminal 13D shown in FIG. 3 (c) is bent in a Z-shape, and one end of this bent portion is connected to the through hole 1 of the sealing member 9.
2 and the other end is pressed against the electrode wiring 4a of the anode 4 and the electrode wiring 6a of the cathode 6 by the spring force of the bent portion.
【００５８】図３（ｄ）に示す端子１３Ｅは、図３
（ｃ）の端子１３Ｄと同様にＺ字状に折曲されており、
この折曲部分の一端が封止部材９の貫通穴１２に固定さ
れ、他端の先端部分に導電部材１４が取り付けられ、こ
の導電部材１４が上記折曲部分のバネ力により陽極４の
電極用配線４ａ及び陰極６の電極用配線６ａに押圧接触
するものである。The terminal 13E shown in FIG.
It is bent in a Z shape like the terminal 13D of (c),
One end of the bent portion is fixed to the through hole 12 of the sealing member 9, and a conductive member 14 is attached to the tip of the other end, and the conductive member 14 is used for the electrode of the anode 4 by the spring force of the bent portion. This is to press and contact the wiring 4a and the electrode wiring 6a of the cathode 6.
【００５９】なお、封止部材９に固定される端子１３
は、封止部材９を基板３に封着して外囲器１１を構成し
た際、基板３上の陽極４の電極用配線４ａ及び陰極６の
電極用配線６ａに対して所望の押圧力を付与できるバネ
性を有した形状であれば、図３（ａ）〜（ｄ）に示すも
のに限定されるものではない。The terminal 13 fixed to the sealing member 9
When the envelope 11 is formed by sealing the sealing member 9 to the substrate 3, a desired pressing force is applied to the electrode wiring 4 a of the anode 4 and the electrode wiring 6 a of the cathode 6 on the substrate 3. The shape is not limited to those shown in FIGS. 3A to 3D as long as the shape has a spring property that can be imparted.
【００６０】次に、図４（ａ），（ｂ）及び図５
（ａ），（ｂ）は有機ＥＬ表示装置の各セルを構成する
有機ＥＬ素子の他の配線接続例を示している。なお、各
有機ＥＬ素子２の基板３上の陽極４の電極用配線４ａ及
び陰極６の電極用配線６ａから封止部材９の外側までの
配線の取り出しについては、図２（ａ），（ｂ）と同
様、発光部８（画素）間を接続点Ｐとして封止部材９の
貫通穴１２に固定された端子１３を通じて行われる。Next, FIGS. 4A and 4B and FIG.
(A), (b) shows another example of wiring connection of the organic EL element constituting each cell of the organic EL display device. 2A and FIG. 2B, the wiring from the electrode wiring 4a of the anode 4 and the electrode wiring 6a of the cathode 6 to the outside of the sealing member 9 on the substrate 3 of each organic EL element 2 is described. As in the case of (1), the process is performed through the terminal 13 fixed to the through-hole 12 of the sealing member 9 with the light emitting portions 8 (pixels) being connected points P.
【００６１】図４（ａ），（ｂ）の例において、封止部
材９の外側まで引き出された各端子１３は、封止部材９
の外面９ｂに引き回して裏面９ｂの一端側に整列された
配線１５に接続される。そして、この整列された配線１
５は、テープ状の可撓性ケーブル１６を介して外部回路
（例えば駆動回路）に接続される。In the example shown in FIGS. 4A and 4B, each terminal 13 extending to the outside of the sealing member 9 is
And is connected to the wiring 15 arranged on one end side of the back surface 9b. And this aligned wiring 1
5 is connected to an external circuit (for example, a drive circuit) via a tape-shaped flexible cable 16.
【００６２】図５（ａ），（ｂ）の例において、封止部
材９の外面９ｂには、有機ＥＬ素子２を駆動するための
駆動回路１７が搭載されている。そして、封止部材９の
外側まで引き出された各端子１３は、封止部材９の外面
９ｂに引き回された配線１８を介して駆動回路１７に接
続される。また、駆動回路１７は、テープ状の可撓性ケ
ーブル１９を介して外部回路（不図示）に接続される。In the example shown in FIGS. 5A and 5B, a driving circuit 17 for driving the organic EL element 2 is mounted on the outer surface 9b of the sealing member 9. Each terminal 13 drawn to the outside of the sealing member 9 is connected to a drive circuit 17 via a wiring 18 routed to the outer surface 9b of the sealing member 9. The drive circuit 17 is connected to an external circuit (not shown) via a tape-shaped flexible cable 19.
【００６３】なお、上記外部回路は、各有機ＥＬ素子２
の駆動を統括するものであり、各有機ＥＬ素子２の駆動
回路１７に対し、発光駆動用のデータ、データの書込・
読取信号、各有機ＥＬ素子２を同期させて発光させるた
めの同期信号、駆動回路１７の位置情報を示すアドレス
等の各種信号を送出している。Note that the above-mentioned external circuit is composed of each organic EL element 2
, And light emission driving data, data writing / writing to the driving circuit 17 of each organic EL element 2.
Various signals such as a read signal, a synchronization signal for synchronizing the organic EL elements 2 to emit light, and an address indicating position information of the drive circuit 17 are transmitted.
【００６４】また、図４及び図５の構成で用いられる可
撓性ケーブル１６，１９は、封止部材９の外面９ｂに形
成された配線１５，１８のピッチに対向して並列される
銅配線の一方の面を基材であるカバーレイフィルムで被
覆し、他方の面がベースフィルムで被覆された多層フィ
ルムからなる。そして、可撓性カーブル１６，１９の端
部は、カバーフィルムが取り除かれて銅配線が表出して
おり、この面には銅配線と封止部材９の外面９ｂに形成
された配線１５，１８との間を接続するための異方性導
電膜が設けられている。The flexible cables 16 and 19 used in the configurations shown in FIGS. 4 and 5 are made of copper wiring parallel to the pitch of the wirings 15 and 18 formed on the outer surface 9 b of the sealing member 9. Consists of a multilayer film in which one surface is covered with a coverlay film as a base material and the other surface is covered with a base film. At the ends of the flexible cables 16 and 19, the copper film is exposed by removing the cover film, and the copper wires and the wires 15 and 18 formed on the outer surface 9b of the sealing member 9 are provided on this surface. And an anisotropic conductive film for connection between the two.
【００６５】異方性導電膜は、エポキシ樹脂系等の熱硬
化性の接着剤に導電性粒子を分散したシート状の部材で
ある。この異方性導電膜は、加熱と加圧によって接着剤
が溶融し、分散されている導電粒子が対向する配線間に
捕捉されることによって厚さ方向に高い導電性が得られ
る。面方向については、導電粒子が互いに接触しない程
度に分散されているとともに接着剤が不導体となるの
で、高い絶縁性が得られる。The anisotropic conductive film is a sheet-like member in which conductive particles are dispersed in a thermosetting adhesive such as an epoxy resin. In the anisotropic conductive film, the adhesive is melted by heating and pressurization, and the dispersed conductive particles are trapped between the opposing wires, so that high conductivity is obtained in the thickness direction. In the plane direction, the conductive particles are dispersed to such an extent that they do not come into contact with each other, and the adhesive becomes non-conductive, so that high insulation properties can be obtained.
【００６６】このように、本実施の形態によれば、陽極
４及び陰極６の電極用配線４ａ，６ａを封止部材９の外
側まで取り出すにあたって、発光部（画素）８間を接続
点Ｐとし、この接続点Ｐから封止部材９の貫通穴１２に
固定された端子１３を通じて配線の取り出しを行ってい
る。これにより、外囲器１１の側面周囲からの配線の取
り出しが無くなり、大画面表示装置を構成するにあたっ
て隣接する各有機ＥＬ素子２間のピッチを狭くすること
ができる。As described above, according to the present embodiment, when taking out the electrode wirings 4 a and 6 a of the anode 4 and the cathode 6 to the outside of the sealing member 9, the connection point P is set between the light emitting portions (pixels) 8. The wiring is taken out from the connection point P through the terminal 13 fixed to the through hole 12 of the sealing member 9. This eliminates the need to take out the wiring from the periphery of the side surface of the envelope 11, and can reduce the pitch between the adjacent organic EL elements 2 when configuring a large-screen display device.
【００６７】具体的に、図８に示す従来の有機ＥＬ表示
装置における発光部間の距離を１００％とすると、本例
の有機ＥＬ表示装置１での発光部８間の距離が５７％に
低減することができた。Specifically, assuming that the distance between the light emitting units in the conventional organic EL display device shown in FIG. 8 is 100%, the distance between the light emitting units 8 in the organic EL display device 1 of this example is reduced to 57%. We were able to.
【００６８】その結果、本例の有機ＥＬ表示装置１によ
れば、図８に示す従来の有機ＥＬ表示装置に比べ、各有
機ＥＬ素子２に形成される発光部８の開口率を大きくす
ることができる。しかも、各有機ＥＬ素子２における発
光部８の画素ピッチも小さくすることができる。As a result, according to the organic EL display device 1 of the present embodiment, the aperture ratio of the light emitting section 8 formed in each organic EL element 2 is increased as compared with the conventional organic EL display device shown in FIG. Can be. In addition, the pixel pitch of the light emitting section 8 in each organic EL element 2 can be reduced.
【００６９】また、各有機ＥＬ素子２は、各々独立駆動
可能に駆動回路に接続されるので、故障した有機ＥＬ素
子に影響されることなく各々の有機ＥＬ素子２の駆動が
行え、保守・点検にも容易に対処することができる。Further, since each organic EL element 2 is connected to the drive circuit so as to be independently driven, each organic EL element 2 can be driven without being affected by a failed organic EL element, and maintenance and inspection can be performed. Can be easily dealt with.
【００７０】図４の構成を採用した有機ＥＬ表示装置１
では、封止部材９の裏面９ｂ上に引き回して一端側に整
列された配線１５に対し、封止部材９の外側まで引き出
された各端子１３が接続されており、この整列された配
線１５が可撓性ケーブル１６を介して外部回路（例えば
駆動回路）に接続されている。この構成によれば、各有
機ＥＬ素子２と外部回路との間の接続を容易に行うこと
ができる。An organic EL display device 1 employing the configuration of FIG.
In this example, the terminals 13 drawn to the outside of the sealing member 9 are connected to the wirings 15 that are routed on the back surface 9b of the sealing member 9 and aligned on one end side. It is connected to an external circuit (for example, a drive circuit) via a flexible cable 16. According to this configuration, connection between each organic EL element 2 and an external circuit can be easily performed.
【００７１】図５の構成を採用した有機ＥＬ表示装置で
は、封止部材９の裏面９ｂ上に駆動回路１７を搭載し、
封止部材９の外側まで引き出された各端子１３が配線１
８により駆動回路１７に接続され、駆動回路１７と外部
回路との間が可撓性ケーブル１９を介して接続されてい
る。この構成によれば、各有機ＥＬ素子２より外部に引
き出される配線数を少なくすることができる。In the organic EL display device employing the configuration shown in FIG. 5, a driving circuit 17 is mounted on the back surface 9b of the sealing member 9,
Each terminal 13 drawn out of the sealing member 9 is connected to the wiring 1
8, the drive circuit 17 is connected to the drive circuit 17, and the drive circuit 17 and the external circuit are connected via a flexible cable 19. According to this configuration, the number of wirings drawn out from each organic EL element 2 can be reduced.
【００７２】ところで、上述した実施の形態において、
各々一つのセルをなす有機ＥＬ素子２は、基板３の外側
から素子７の発光を観察する構成となっているが、図６
に示すように、封止部材９の外側から素子７の発光を観
察する構成としてもよい。この構成の場合、予め基板３
の所定の位置、すなわち、陽極４及び陰極６が形成され
たときの接続点Ｐの位置に端子１３を固定しておく。そ
して、基板３上に陰極６、有機層５、陽極４の順に積層
して素子７を形成する。Incidentally, in the above-described embodiment,
The organic EL element 2 forming one cell each has a configuration in which light emission of the element 7 is observed from outside the substrate 3.
As shown in (2), a configuration may be adopted in which light emission of the element 7 is observed from outside the sealing member 9. In this configuration, the substrate 3
Is fixed at a predetermined position, that is, the position of the connection point P when the anode 4 and the cathode 6 are formed. Then, the element 6 is formed by laminating the cathode 6, the organic layer 5, and the anode 4 in this order on the substrate 3.
【００７３】また、上記実施の形態において、端子１３
が押圧接触する陰極６の下部の基板３との間（図２
（ａ）の一点鎖線で示す部分）に金属膜を部分的に成膜
しておいてもよい。その際、上記金属膜を陽極４と同一
材料にすれば、陽極４の成膜時に一緒に形成することが
できる。そして、上記構成によれば、端子１３が陰極６
上の接続点Ｐに押圧接触した際に表面が削れて接触不良
が生じるのを防ぐことができる。In the above embodiment, the terminal 13
Is pressed between the substrate 3 and the substrate 3 below the cathode 6 (FIG. 2
A metal film may be partially formed in (a) a portion indicated by a dashed line). At this time, if the metal film is made of the same material as the anode 4, it can be formed together with the formation of the anode 4. According to the above configuration, the terminal 13 is connected to the cathode 6.
It is possible to prevent the surface from being scraped when a contact is made with the upper connection point P to cause poor contact.
【００７４】更に、上記実施の形態では、陽極４の電極
用配線４ａ及び陰極６の電極用配線６ａを金属材料のピ
ンからなる端子１３により封止部材９の外側まで取り出
す構成としているが、陽極４の電極用配線４ａ及び陰極
６の電極用配線６ａ上の接続点Ｐの位置と、この接続点
Ｐと対向する封止部材９の内面９ａに導電性接着剤（例
えば紫外線硬化樹脂）をそれぞれ塗布しておき、外囲器
１１を構成する工程において、導電性接着剤同士を硬化
させて接続を行うようにしてもよい。Further, in the above embodiment, the electrode wiring 4a of the anode 4 and the electrode wiring 6a of the cathode 6 are taken out to the outside of the sealing member 9 by the terminals 13 made of metal pins. A conductive adhesive (for example, an ultraviolet curable resin) is applied to the position of the connection point P on the electrode wiring 4a and the electrode wiring 6a of the cathode 6, and to the inner surface 9a of the sealing member 9 facing the connection point P. After the application, the conductive adhesive may be cured and connected in the step of forming the envelope 11.
【００７５】この場合、封止部材９の内面９ａに形成さ
れる導電性接着剤から封止部材９の外側までの配線の引
き出しは、上記導電性接着剤と電気的に接続されるよう
に貫通穴１２に固定された金属ピンからなる端子、上記
導電性接着剤と電気的に接続されるように貫通穴１２内
に充填される金属等を介して行うことができる。In this case, the lead-out of the wiring from the conductive adhesive formed on the inner surface 9a of the sealing member 9 to the outside of the sealing member 9 penetrates so as to be electrically connected to the conductive adhesive. This can be performed via a terminal made of a metal pin fixed to the hole 12, a metal filled in the through hole 12 so as to be electrically connected to the conductive adhesive, or the like.
【００７６】[0076]
【発明の効果】以上の説明で明らかなように、本発明の
有機ＥＬ表示装置によれば、一対の電極の配線を外囲器
の外側まで取り出すにあたって、発光部（画素）間を接
続点とし、この接続点から発光部の発光を観察する面と
反対側に位置する外囲器の面の外側まで引き出して配線
の取り出しを行っている。これにより、外囲器の側面周
囲からの配線の取り出しが無くなり、大画面表示装置を
構成するにあたって隣接する各有機ＥＬ素子間のピッチ
を狭くすることができる。As is clear from the above description, according to the organic EL display device of the present invention, when the wiring of the pair of electrodes is taken out to the outside of the envelope, the connection between the light-emitting portions (pixels) is made. The wiring is drawn out from this connection point to the outside of the surface of the envelope located on the side opposite to the surface on which light emission of the light emitting unit is observed. This eliminates the need to take out the wiring from the periphery of the side surface of the envelope, thereby making it possible to reduce the pitch between adjacent organic EL elements when configuring a large-screen display device.
【００７７】その結果、従来の有機ＥＬ表示装置に比
べ、各有機ＥＬ素子に形成される発光部の開口率を大き
くでき、各有機ＥＬ素子における発光部の画素ピッチも
小さくすることができる。As a result, as compared with the conventional organic EL display device, the aperture ratio of the light emitting portion formed in each organic EL element can be increased, and the pixel pitch of the light emitting portion in each organic EL element can be reduced.
【００７８】請求項２の有機ＥＬ表示装置によれば、故
障した有機ＥＬ素子に影響されることなく、各有機ＥＬ
素子を各々独立して駆動することができ、保守・点検に
も容易に対処することができる。According to the organic EL display device of the second aspect, each organic EL element is not affected by the failed organic EL element.
The elements can be driven independently, and maintenance and inspection can be easily dealt with.
【００７９】請求項４〜７の有機ＥＬ表示装置によれ
ば、接続点での電極に対する端子の接続をより確実に行
うことができる。According to the organic EL display device of the fourth to seventh aspects, the connection of the terminal to the electrode at the connection point can be performed more reliably.
【００８０】特に、請求項７の有機ＥＬ表示装置によれ
ば、端子が電極上の接続点に押圧接触した際に表面が削
れて接触不良が生じるのを防ぐことができる。In particular, according to the organic EL display device of the seventh aspect, it is possible to prevent the surface from being shaved when the terminal comes into contact with the connection point on the electrode to cause a poor contact.
【図１】本発明による有機ＥＬ表示装置の外観を示す平
面図FIG. 1 is a plan view showing the appearance of an organic EL display device according to the present invention.
【図２】（ａ）図１の有機ＥＬ表示装置の各セルを構成
する有機ＥＬ素子の側断面図 （ｂ）（ａ）の平面図2A is a side sectional view of an organic EL element constituting each cell of the organic EL display device of FIG. 1; FIG. 2B is a plan view of FIG.
【図３】（ａ）〜（ｄ）図２の各有機ＥＬ素子における
陽極及び陰極の配線との間の接続を行うための端子の構
成例を示す図3 (a) to 3 (d) are diagrams showing configuration examples of terminals for making connections between anode and cathode wirings in each organic EL element of FIG.
【図４】（ａ），（ｂ）本発明による有機ＥＬ表示装置
の各セルを構成する有機ＥＬ素子の他の配線接続例を示
す図FIGS. 4A and 4B are diagrams showing another wiring connection example of the organic EL element constituting each cell of the organic EL display device according to the present invention.
【図５】（ａ），（ｂ）本発明による有機ＥＬ表示装置
の各セルを構成する有機ＥＬ素子の他の配線接続例を示
す図FIGS. 5A and 5B are diagrams showing another wiring connection example of the organic EL element constituting each cell of the organic EL display device according to the present invention.
【図６】本発明による有機ＥＬ表示装置の各セルを構成
する有機ＥＬ素子の他の構成例を示す側断面図FIG. 6 is a side sectional view showing another configuration example of the organic EL element constituting each cell of the organic EL display device according to the present invention.
【図７】一般的な有機ＥＬ素子の構成を示す断面図FIG. 7 is a cross-sectional view showing a configuration of a general organic EL element.
【図８】（ａ）従来の有機ＥＬ表示装置の平面図 （ｂ）（ａ）の側面図FIG. 8A is a plan view of a conventional organic EL display device, and FIG. 8B is a side view of FIG.
【図９】（ａ）に開示される従来の有機ＥＬ表示装置の
平面図 （ｂ）（ａ）におけるＡ−Ａ線断面図 （ｃ）（ａ）におけるＢ−Ｂ線断面図9A is a plan view of the conventional organic EL display device disclosed in FIG. 9A; FIG. 9B is a cross-sectional view taken along line AA in FIG.
１…有機ＥＬ表示装置、２…有機ＥＬ素子、４…陽極、
４ａ…電極用配線、５…有機層、６…陰極、６ａ…電極
用配線、７…素子、８…発光部、１１…外囲器、１７…
駆動回路、Ｐ…接続点。DESCRIPTION OF SYMBOLS 1 ... Organic EL display device, 2 ... Organic EL element, 4 ... Anode,
4a: electrode wiring, 5: organic layer, 6: cathode, 6a: electrode wiring, 7: element, 8: light emitting section, 11: envelope, 17 ...
Drive circuit, P ... connection point.
フロントページの続き (72)発明者 福田 辰男 千葉県茂原市大芝629 双葉電子工業株式 会社内 Ｆターム(参考） 3K007 AB00 AB05 BA06 BB01 CA01 CB01 CC05 DA00 DB03 EB00 FA01 FA02 5C094 AA02 AA14 AA41 AA60 BA27 CA19 EA05 EB02 Continuing on the front page (72) Inventor Tatsuo Fukuda 629 Oshiba, Mobara-shi, Chiba Futaba Electronics Co., Ltd.F-term (reference) EB02
Claims (7)
電極間に発光層を含む有機層が挟まれた素子が箱状の外
囲器内に形成された有機ＥＬ素子を複数並べて大型表示
を行う有機ＥＬ表示装置において、 前記有機ＥＬ素子それぞれの前記一対の電極の配線は、
当該有機ＥＬ素子の前記外囲器内の発光部間を接続点と
し、該接続点から前記発光部の発光を観察する面と反対
側に位置する前記外囲器の面の外側まで引き出されてい
ることを特徴とする有機ＥＬ表示装置。1. A large-sized display is formed by arranging a plurality of organic EL elements each having an organic layer including a light-emitting layer sandwiched between a pair of electrodes having a light-transmitting property and formed in a box-shaped envelope. In the organic EL display device, the wiring of the pair of electrodes of each of the organic EL elements is
A connection point is formed between the light-emitting portions in the envelope of the organic EL element, and the organic EL element is drawn from the connection point to the outside of the surface of the envelope located on the side opposite to the surface on which light emission of the light-emitting portion is observed. An organic EL display device comprising:
電極間に発光層を含む有機層が挟まれた素子が箱状の外
囲器内に形成された有機ＥＬ素子を複数並べて大型表示
を行う有機ＥＬ表示装置において、 前記有機ＥＬ素子それぞれの前記一対の電極の配線は、
当該有機ＥＬ素子の前記外囲器内の発光部間を接続点と
し、該接続点から前記発光部の発光を観察する面と反対
側に位置する前記外囲器の面の外側まで引き出されて外
部の駆動回路に接続されており、前記有機ＥＬ素子毎に
駆動可能とされていることを特徴とする有機ＥＬ表示装
置。2. A large-sized display is formed by arranging a plurality of organic EL elements each having an organic layer including a light-emitting layer sandwiched between a pair of electrodes having a light-transmitting property and formed in a box-shaped envelope. In the organic EL display device, the wiring of the pair of electrodes of each of the organic EL elements is
A connection point is formed between the light-emitting portions in the envelope of the organic EL element, and the organic EL element is drawn from the connection point to the outside of the surface of the envelope located on the side opposite to the surface on which light emission of the light-emitting portion is observed. An organic EL display device which is connected to an external drive circuit and is drivable for each of the organic EL elements.
に位置する前記外囲器の面には、前記接続点で前記一対
の電極の配線と接触する金属性の端子が取り付けられて
いることを特徴とする請求項１又は２記載の有機ＥＬ表
示装置。3. A metal terminal that is in contact with the wiring of the pair of electrodes at the connection point is attached to a surface of the envelope that is located on a side opposite to a surface of the light emitting unit that observes light emission. The organic EL display device according to claim 1, wherein:
り前記接続点に固定されていることを特徴とする請求項
３記載の有機ＥＬ表示装置。4. The organic EL display device according to claim 3, wherein a tip of the terminal is fixed to the connection point by a conductive adhesive.
ていることを特徴とする請求項３記載の有機ＥＬ表示装
置。5. The organic EL display device according to claim 3, wherein a conductive member is provided at a tip portion of said terminal.
接触するようにバネ性を有していることを特徴とする請
求項３記載の有機ＥＬ表示装置。6. The organic EL display device according to claim 3, wherein the terminal has a spring property so that a tip portion presses and contacts the connection point.
電極の下部に位置して金属膜が形成されていることを特
徴とする請求項６記載の有機ＥＬ表示装置。7. The organic EL display device according to claim 6, wherein a metal film is formed below the electrode on the connection point where the terminal presses and contacts.
Priority Applications (1)
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|---|---|---|---|
| JP11222594A JP2001052858A (en) | 1999-08-05 | 1999-08-05 | Organic el display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11222594A JP2001052858A (en) | 1999-08-05 | 1999-08-05 | Organic el display device |
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| Publication Number | Publication Date |
|---|---|
| JP2001052858A true JP2001052858A (en) | 2001-02-23 |
Family
ID=16784927
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11222594A Pending JP2001052858A (en) | 1999-08-05 | 1999-08-05 | Organic el display device |
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| Country | Link |
|---|---|
| JP (1) | JP2001052858A (en) |
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