JPH03141588A - Electroluminescent device - Google Patents
Electroluminescent deviceInfo
- Publication number
- JPH03141588A JPH03141588A JP1280133A JP28013389A JPH03141588A JP H03141588 A JPH03141588 A JP H03141588A JP 1280133 A JP1280133 A JP 1280133A JP 28013389 A JP28013389 A JP 28013389A JP H03141588 A JPH03141588 A JP H03141588A
- Authority
- JP
- Japan
- Prior art keywords
- cathode
- electroluminescent device
- light
- vacuum evaporation
- anode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 150000002894 organic compounds Chemical class 0.000 claims abstract description 5
- 230000006866 deterioration Effects 0.000 abstract description 6
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052749 magnesium Inorganic materials 0.000 abstract description 5
- 239000011777 magnesium Substances 0.000 abstract description 5
- 239000000758 substrate Substances 0.000 abstract description 5
- 229910052782 aluminium Inorganic materials 0.000 abstract description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 4
- 239000011521 glass Substances 0.000 abstract description 3
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 abstract description 3
- 238000007738 vacuum evaporation Methods 0.000 abstract description 3
- 150000004985 diamines Chemical class 0.000 abstract description 2
- 238000001771 vacuum deposition Methods 0.000 abstract 2
- MPJHCHQZABSXMJ-UHFFFAOYSA-N aluminum;quinolin-8-ol Chemical compound [Al+3].C1=CN=C2C(O)=CC=CC2=C1 MPJHCHQZABSXMJ-UHFFFAOYSA-N 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 18
- 239000000463 material Substances 0.000 description 9
- 230000005684 electric field Effects 0.000 description 5
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 230000005525 hole transport Effects 0.000 description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- -1 poly(3-methylthiophene) Polymers 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- GOLORTLGFDVFDW-UHFFFAOYSA-N 3-(1h-benzimidazol-2-yl)-7-(diethylamino)chromen-2-one Chemical compound C1=CC=C2NC(C3=CC4=CC=C(C=C4OC3=O)N(CC)CC)=NC2=C1 GOLORTLGFDVFDW-UHFFFAOYSA-N 0.000 description 1
- 229910006853 SnOz Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- PJANXHGTPQOBST-VAWYXSNFSA-N Stilbene Natural products C=1C=CC=CC=1/C=C/C1=CC=CC=C1 PJANXHGTPQOBST-VAWYXSNFSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 229920001940 conductive polymer Polymers 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000005401 electroluminescence Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920000128 polypyrrole Polymers 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- PJANXHGTPQOBST-UHFFFAOYSA-N stilbene Chemical compound C=1C=CC=CC=1C=CC1=CC=CC=C1 PJANXHGTPQOBST-UHFFFAOYSA-N 0.000 description 1
- 235000021286 stilbenes Nutrition 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- TVIVIEFSHFOWTE-UHFFFAOYSA-K tri(quinolin-8-yloxy)alumane Chemical compound [Al+3].C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1 TVIVIEFSHFOWTE-UHFFFAOYSA-K 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/805—Electrodes
- H10K50/82—Cathodes
- H10K50/826—Multilayers, e.g. opaque multilayers
Landscapes
- Electroluminescent Light Sources (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は発光性物質からなる発光層を有し、電界を印加
することにより電界印加エネルギーを直接光エネルギー
に変換でき、従来の白熱灯、蛍光灯あるいは発光ダイオ
ード等とは異なり大面積の面状発光体の実現を可能にす
る電発光素子に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention has a light-emitting layer made of a light-emitting substance, and by applying an electric field, the applied energy of the electric field can be directly converted into light energy. The present invention relates to an electroluminescent device that, unlike fluorescent lamps or light emitting diodes, enables the realization of large-area planar light emitters.
〔従来の技術］ 電界発光素子はその発光励起機構の違いから。[Conventional technology] Electroluminescent devices differ in their emission excitation mechanisms.
（１）発光層内での電子や正孔の局所的な移動により発
光体を励起し、交流電界でのみ発光する真性電界発光素
子と、（２）電極からの電子と正孔の注入とその発光層
内での再結合により発光体を励起し、直流電界で作動す
るキャリア注入型電界発光素子の二つに分けられる。（
１）の真性電界発光型の発光素子は一般にＺｎＳにＭｎ
、 Ｃｕ等を添加した無機化合物を発光体とするもので
あるが、製造コストが高いこと、精度や耐大性も不十分
である等の多くの問題点を有する。(1) An intrinsic electroluminescent device that excites a light emitter through local movement of electrons and holes within the light emitting layer and emits light only in an alternating current electric field; (2) Injection of electrons and holes from electrodes and their There are two types of electroluminescent devices: carrier injection type electroluminescent devices that excite the luminescent material through recombination within the light emitting layer and operate with a direct current electric field. (
1) Intrinsic electroluminescence type light emitting devices are generally made of ZnS and Mn.
, which uses an inorganic compound doped with Cu or the like as a light emitting body, but has many problems such as high manufacturing cost and insufficient precision and durability.
（２）のキャリア注入型電界発光素子は発光層として薄
膜状有機化合物を用いるようになってから高輝度のもの
が得られるようになった。たとえば。The carrier injection type electroluminescent device (2) has become capable of achieving high luminance since thin film-like organic compounds have been used as the light emitting layer. for example.
特開昭５９−１９４３９３号及び米国特許４，７２０，
４３２には緑色発光素子が、Ｊｐｎ、Ｊｏｕｒｎａｌ
ｏｆ Ａｐｐｌｉｅｄ Ｐｈｙｓｉｃｓ。JP 59-194393 and U.S. Patent No. 4,720,
432 has a green light emitting element, Jpn, Journal
of Applied Physics.
ｖｏｌ、２７．Ｐ７１３−７１５には黄色発光素子が開
示されており、これらは通常、１００Ｖ以下の直流電界
下で高輝度の発光をする。vol, 27. P713-715 discloses a yellow light emitting device, which typically emits high brightness under a DC electric field of 100V or less.
しかし、上記の例を含め、有機物を発光体とするキャリ
ア注入型電界発光素子はその研究も浅く、末だその材料
研究やデバイス化への研究が充分になされているとは言
えず、現状では更なる輝度の向上１発光波長のコントロ
ール、耐久性の向上など、多くの課題をかかえているの
が実情である。However, research on carrier-injection electroluminescent devices using organic substances as light emitters, including the examples mentioned above, is limited, and research into materials and device development has not yet been sufficiently conducted. The reality is that there are many issues to be addressed, such as further improvement in brightness (1) control of emission wavelength and improvement in durability.
本発明は上記の実情に鑑みてなされたものであり、その
目的は、電極の劣化が抑制され、発光性能が長時間に亘
って持続する耐久性に優れた電界発光素子を提供するこ
とにある。The present invention has been made in view of the above-mentioned circumstances, and its purpose is to provide an electroluminescent element with excellent durability in which deterioration of electrodes is suppressed and luminous performance is maintained for a long period of time. .
本発明者らは、上記課題を解決するため鋭意検討した結
果、陽極および陰極とこれらの間に狭持された一層また
は複数層の有機化合物層より構成される電界発光素子に
おいて、電極が２層あるいはそれ以上の複数層よりなる
積層電極とすることが上記課題に対し有効であることを
見い出し、本発明を完成するに至った。As a result of intensive studies to solve the above problems, the present inventors found that an electroluminescent device consisting of an anode, a cathode, and one or more organic compound layers sandwiched between them has two electrode layers. Alternatively, the present inventors have discovered that a laminated electrode consisting of a plurality of layers or more is effective in solving the above problem, and have completed the present invention.
すなわち１本発明によれば、陽極および陰極と、これら
の間に狭持された一層または複数層の有機化合物層より
構成される電界発光素子において、陰極が２Ｎあるいは
それ以上の複数層よりなる積層電極であることを特徴と
する電界発光素子が提供される。That is, according to the present invention, in an electroluminescent device composed of an anode, a cathode, and one or more organic compound layers sandwiched between them, the cathode is a laminate composed of a plurality of layers of 2N or more. An electroluminescent device is provided, which is an electrode.
本発明の電界発光素子の１例を添付図面に沿って説明す
る。第１図において、１は基板、２は陽極、３はホール
輸送層、４は発光層、５ａは第１陰極及び５ｂは第２陰
極である。An example of the electroluminescent device of the present invention will be described with reference to the accompanying drawings. In FIG. 1, 1 is a substrate, 2 is an anode, 3 is a hole transport layer, 4 is a light emitting layer, 5a is a first cathode, and 5b is a second cathode.
従来の電界発光素子は第２図に示されるように陰極５は
単層で構成されていたため、大気中の酸素や水分により
変質し、耐久性に劣るものであったが１本発明の電界発
光素子は陰極の構成を少なくとも２Ｎからなる積層陰極
としたことから、＋１３極の劣化が抑制され、耐久性が
向上し、長期間に亘って発光性能が持続するといった顕
著な作用効果を奏するものである。In the conventional electroluminescent device, the cathode 5 was composed of a single layer as shown in Fig. 2, so it deteriorated due to oxygen and moisture in the atmosphere and had poor durability.However, the electroluminescent device of the present invention Since the device uses a laminated cathode made of at least 2N, the device has remarkable effects such as suppressing deterioration of the +13 pole, improving durability, and maintaining light emitting performance over a long period of time. be.
陰極材料としては、仕事関数の／ｈさい銀、錫、鉛、マ
グネシウム、カルシウム、マンガン、アルミニウムある
いはこれら合金等が用いられる。また、第１陰極５ａと
第２陰極５ｂの材料は同じものでもよいが、耐久性の向
上の観点等からみて第１陰極５ａは第２ｗ１極５ｂより
仕事関数の小さい材料を用いることが好ましい、具体的
には第１陰極５ａの材料としてはマグネシウム、カルシ
ウム等を、第２陰極５ｂの材料としては金、アルミニウ
ム等を選定することが好ましい。As the cathode material, silver, tin, lead, magnesium, calcium, manganese, aluminum, or an alloy thereof, or an alloy thereof, having a work function of /h is used. Further, the first cathode 5a and the second cathode 5b may be made of the same material, but from the viewpoint of improving durability, it is preferable to use a material with a smaller work function for the first cathode 5a than the second w1 pole 5b. Specifically, it is preferable to select magnesium, calcium, etc. as the material for the first cathode 5a, and gold, aluminum, etc. as the material for the second cathode 5b.
陽極２の材料としてはニッケル、金、白金、パラジウム
や、これらの合金或いは酸化錫（ＳｎＯｚ ）、酸化錫
インジウム（ＩＴＯ）、沃化鋼なとの法事関数の大きな
金属やそれらの合金、化合物、更にポリ（３−メチルチ
オフェン）、ポリピロール等の導電性ポリマーなどを用
いることができる。Materials for the anode 2 include nickel, gold, platinum, palladium, alloys thereof, metals with large legal functions such as tin oxide (SnOz), indium tin oxide (ITO), and steel iodide, and their alloys and compounds. Furthermore, conductive polymers such as poly(3-methylthiophene) and polypyrrole can be used.
陽極及び陰極として用いる材料のうち少なくとも一方は
、素子の発光波長領域において十分透明であることが望
ましい、具体的には８０％以上の光透過率を有すること
が望ましい。It is desirable that at least one of the materials used as the anode and the cathode be sufficiently transparent in the emission wavelength region of the device, specifically, it is desirable that the material has a light transmittance of 80% or more.
本発明における電界発光素子の発光層４はアントラセン
、ペリレンブタジェン、クマリン、スチルベン、オキシ
ノイド錯体等を真空蒸着法、溶液塗布法等により薄膜化
し、陽極及び陰極で狭持することにより構成される。そ
の際、化合物中に添加物として他の物質を複数種添加す
ることもできる。また電極からの電荷注入効率を向上さ
せるために、ホール輸送層３を電極との間に別に設ける
ことも可能である。The light-emitting layer 4 of the electroluminescent device of the present invention is formed by forming a thin film of anthracene, perylene-butadiene, coumarin, stilbene, oxinoid complex, etc. by vacuum evaporation, solution coating, etc., and sandwiching the thin film between an anode and a cathode. At that time, a plurality of other substances may be added to the compound as additives. Further, in order to improve the efficiency of charge injection from the electrodes, it is also possible to separately provide the hole transport layer 3 between the electrodes.
以上の各層は、ガラス等の透明基板上ｌに順次積層させ
て素子として構成されるわけであるが、素子の安定性の
向上、特に大気中の水分に対する保護のために、別に保
護層を設けたり、素子全体をセル中に入れ、シリコンオ
イル等を封入するようにしても良い。Each of the above layers is sequentially laminated on a transparent substrate such as glass to form an element, but a separate protective layer is provided to improve the stability of the element, especially to protect it from moisture in the atmosphere. Alternatively, the entire element may be placed in a cell and silicone oil or the like may be sealed therein.
以下、実施例に基いて１本発明をより具体的に説明する
。Hereinafter, the present invention will be explained in more detail based on Examples.
実施例１
ガラス基板上に大きさ３＋＋＋ｍＸ ３＋ｗｍ、厚さ５
００人の酸化錫インジウム（ＩＴＯ）による陽極を形成
し、その上に、下記式（Ｉ）で示されるジアミン誘へ体
を真空蒸着して厚さ７５０人のホール輸送層を形成した
。つぎにこのホール輸送層の上に式（ｎ）で示される８
−ヒドロキシキノリンアルミニウム錯体を同じく真空蒸
着して厚さ７５０人の発光層を形成した。Example 1 Size 3+++m x 3+wm, thickness 5 on a glass substrate
An anode made of indium tin oxide (ITO) was formed, and a diamine derivative represented by the following formula (I) was vacuum-deposited thereon to form a hole transport layer having a thickness of 750 nm. Next, on this hole transport layer, 8
-Hydroxyquinoline aluminum complex was also vacuum deposited to form a light emitting layer with a thickness of 750 nm.
蒸着時の真空度はＩ Ｘ １０−’Ｔｏｒｒ、基板温度
は室温である。The degree of vacuum during vapor deposition was I x 10-' Torr, and the substrate temperature was room temperature.
ついで、発光層上にマグネシウムを同じく真空蒸着して
約５００人の第１陰極を成膜し、その上にアルミニウム
を真空蒸着して、約１０００人の第２ＩＩ３極を成膜し
て第１図に示すような電界発光素子を作製した。このよ
うにして得られた素子１こ外部電源を接続して、電流を
流したところ陽極側にプラスのバイアス電圧を印加した
場合に明瞭な発光を確認された。またこの電界発光素子
は大気中で作動あるいは保存されても電極等の劣化が特
に無く耐久性に優れたものであった。Next, magnesium was similarly vacuum-deposited on the light-emitting layer to form a first cathode of about 500 people, and aluminum was then vacuum-deposited on top of it to form a second II triode of about 1000 people. An electroluminescent device as shown in Figure 1 was fabricated. When one device thus obtained was connected to an external power source and a current was passed through it, clear light emission was confirmed when a positive bias voltage was applied to the anode side. Furthermore, this electroluminescent device had excellent durability without any particular deterioration of the electrodes, etc. even when operated or stored in the atmosphere.
実施例２
実施例１において、第１陰極としての電極材料をカルシ
ウムに代えた以外は実施例１と同様にして電界発光素子
を作製した。このようにして得られた電界発光素子は実
施例１と同様に大気中で作動あるいは保存されていも電
極等の劣化が特に無く耐久性に優れたものであった。Example 2 An electroluminescent device was produced in the same manner as in Example 1 except that calcium was used as the electrode material for the first cathode. As in Example 1, the electroluminescent device thus obtained had excellent durability without any particular deterioration of the electrodes, etc. even when operated or stored in the atmosphere.
比較例
陰極をマグネシウムのみで１５００人の厚さで形成した
以外は実施例１と同様にして第２図に示すように素子を
作成した。このようにして得られた素子は陰極が徐々に
光沢を失い純色となり、それに伴ない発光も弱くなり耐
久性に劣るものであった。Comparative Example A device as shown in FIG. 2 was prepared in the same manner as in Example 1 except that the cathode was formed of magnesium only to a thickness of 1,500 mm. In the device thus obtained, the cathode gradually lost its luster and became a pure color, and as a result, the light emission became weaker and its durability was poor.
本発明の電界発光素子は電極の劣化をか抑制され、耐久
性に優れたものであって、発光性能が長期間に亘って持
続し、またその製作も極めて容易なものである。The electroluminescent device of the present invention suppresses electrode deterioration, has excellent durability, maintains luminous performance over a long period of time, and is extremely easy to manufacture.
第１図は本発明に係る電界発光素子の模式断面図、第２
図は従来の電界発光素子の模式断面図である。FIG. 1 is a schematic cross-sectional view of an electroluminescent device according to the present invention, and FIG.
The figure is a schematic cross-sectional view of a conventional electroluminescent device.
Claims (2)
層または複数層の有機化合物層より構成される電界発光
素子において、陰極が２層あるいはそれ以上の複数層よ
りなる積層電極であることを特徴とする電界発光素子。(1) In an electroluminescent device consisting of an anode, a cathode, and one or more organic compound layers sandwiched between them, the cathode is a laminated electrode consisting of two or more layers. An electroluminescent device characterized by:
極に近い側から第１陰極および第２陰極からなる２層電
極であり、第１陰極の仕事関数が第２陰極のそれより小
さいことを特徴とする電界発光素子。(2) The cathode as a component of the electroluminescent device is a two-layer electrode consisting of a first cathode and a second cathode from the side closer to the anode, and the work function of the first cathode is smaller than that of the second cathode. Characteristic electroluminescent device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1280133A JP2881212B2 (en) | 1989-10-27 | 1989-10-27 | EL device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1280133A JP2881212B2 (en) | 1989-10-27 | 1989-10-27 | EL device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03141588A true JPH03141588A (en) | 1991-06-17 |
| JP2881212B2 JP2881212B2 (en) | 1999-04-12 |
Family
ID=17620799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1280133A Expired - Lifetime JP2881212B2 (en) | 1989-10-27 | 1989-10-27 | EL device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2881212B2 (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01262461A (en) * | 1988-03-30 | 1989-10-19 | Cambridge Life Sci Plc | Concentration measuring apparatus |
| JPH05174975A (en) * | 1991-10-16 | 1993-07-13 | Fuji Electric Co Ltd | Organic thin film luminous element |
| JPH05283169A (en) * | 1992-03-31 | 1993-10-29 | Toppan Printing Co Ltd | Organic thin-film el element |
| US5457357A (en) * | 1992-05-19 | 1995-10-10 | Sanyo Electric Co., Ltd. | Organic electroluminescent device having improved durability and producing method thereof |
| JPH10335060A (en) * | 1997-06-03 | 1998-12-18 | Sony Corp | Organic electrroluminescent element |
| US6143433A (en) * | 1994-09-14 | 2000-11-07 | Mitsui Chemicals, Inc. | Organic electroluminescent device and process for producing the same |
| JP2001338771A (en) * | 2000-03-21 | 2001-12-07 | Seiko Epson Corp | Organic electroluminescent element and its manufacturing method |
| US6341994B1 (en) | 1999-01-13 | 2002-01-29 | Nec Corporation | Organic electroluminescent display device and method of manufacturing the same |
| US6456003B1 (en) | 1999-01-28 | 2002-09-24 | Nec Corporation | Organic electroluminescent devices and panels |
| JP2003282273A (en) * | 2002-03-20 | 2003-10-03 | Seiko Epson Corp | Display device, its manufacturing method, and electronic equipment |
| JP2006059818A (en) * | 1996-03-06 | 2006-03-02 | Trustees Of Princeton Univ | Transparent contact for organic device |
| JP2011237805A (en) * | 2000-01-17 | 2011-11-24 | Semiconductor Energy Lab Co Ltd | Electronic apparatus |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60177600A (en) * | 1984-02-23 | 1985-09-11 | ホ−ヤ株式会社 | Thin film el element and method of producing same |
-
1989
- 1989-10-27 JP JP1280133A patent/JP2881212B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60177600A (en) * | 1984-02-23 | 1985-09-11 | ホ−ヤ株式会社 | Thin film el element and method of producing same |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01262461A (en) * | 1988-03-30 | 1989-10-19 | Cambridge Life Sci Plc | Concentration measuring apparatus |
| JPH05174975A (en) * | 1991-10-16 | 1993-07-13 | Fuji Electric Co Ltd | Organic thin film luminous element |
| JPH05283169A (en) * | 1992-03-31 | 1993-10-29 | Toppan Printing Co Ltd | Organic thin-film el element |
| US5457357A (en) * | 1992-05-19 | 1995-10-10 | Sanyo Electric Co., Ltd. | Organic electroluminescent device having improved durability and producing method thereof |
| US6143433A (en) * | 1994-09-14 | 2000-11-07 | Mitsui Chemicals, Inc. | Organic electroluminescent device and process for producing the same |
| JP2006059818A (en) * | 1996-03-06 | 2006-03-02 | Trustees Of Princeton Univ | Transparent contact for organic device |
| JPH10335060A (en) * | 1997-06-03 | 1998-12-18 | Sony Corp | Organic electrroluminescent element |
| US6462470B1 (en) | 1999-01-13 | 2002-10-08 | Nec Corporation | Organic electroluminescent display with three kinds of layer-stacked devices |
| US6341994B1 (en) | 1999-01-13 | 2002-01-29 | Nec Corporation | Organic electroluminescent display device and method of manufacturing the same |
| US6456003B1 (en) | 1999-01-28 | 2002-09-24 | Nec Corporation | Organic electroluminescent devices and panels |
| JP2011237805A (en) * | 2000-01-17 | 2011-11-24 | Semiconductor Energy Lab Co Ltd | Electronic apparatus |
| US9087476B2 (en) | 2000-01-17 | 2015-07-21 | Semiconductor Energy Laboratory Co., Ltd. | Display system and electrical appliance |
| US9368089B2 (en) | 2000-01-17 | 2016-06-14 | Semiconductor Energy Laboratory Co., Ltd. | Display system and electrical appliance |
| US10467961B2 (en) | 2000-01-17 | 2019-11-05 | Semiconductor Energy Laboratory Co., Ltd. | Display system and electrical appliance |
| US10522076B2 (en) | 2000-01-17 | 2019-12-31 | Semiconductor Energy Laboratory Co., Ltd. | Display system and electrical appliance |
| JP2001338771A (en) * | 2000-03-21 | 2001-12-07 | Seiko Epson Corp | Organic electroluminescent element and its manufacturing method |
| JP2003282273A (en) * | 2002-03-20 | 2003-10-03 | Seiko Epson Corp | Display device, its manufacturing method, and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2881212B2 (en) | 1999-04-12 |
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