JPH01277827A - Electrochemical light emitting element - Google Patents
Electrochemical light emitting elementInfo
- Publication number
- JPH01277827A JPH01277827A JP63108047A JP10804788A JPH01277827A JP H01277827 A JPH01277827 A JP H01277827A JP 63108047 A JP63108047 A JP 63108047A JP 10804788 A JP10804788 A JP 10804788A JP H01277827 A JPH01277827 A JP H01277827A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- voltage
- display electrode
- counter electrode
- display
- 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
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 10
- 239000003125 aqueous solvent Substances 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- 229910052697 platinum Inorganic materials 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 238000007086 side reaction Methods 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 2
- 239000002904 solvent Substances 0.000 abstract 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 6
- 239000000243 solution Substances 0.000 description 5
- 239000000758 substrate Substances 0.000 description 5
- CHEANNSDVJOIBS-MHZLTWQESA-N (3s)-3-cyclopropyl-3-[3-[[3-(5,5-dimethylcyclopenten-1-yl)-4-(2-fluoro-5-methoxyphenyl)phenyl]methoxy]phenyl]propanoic acid Chemical compound COC1=CC=C(F)C(C=2C(=CC(COC=3C=C(C=CC=3)[C@@H](CC(O)=O)C3CC3)=CC=2)C=2C(CCC=2)(C)C)=C1 CHEANNSDVJOIBS-MHZLTWQESA-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
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- 239000012327 Ruthenium complex Substances 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005281 excited state Effects 0.000 description 1
- 230000005283 ground state Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- YYMBJDOZVAITBP-UHFFFAOYSA-N rubrene Chemical compound C1=CC=CC=C1C(C1=C(C=2C=CC=CC=2)C2=CC=CC=C2C(C=2C=CC=CC=2)=C11)=C(C=CC=C2)C2=C1C1=CC=CC=C1 YYMBJDOZVAITBP-UHFFFAOYSA-N 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- HWCKGOZZJDHMNC-UHFFFAOYSA-M tetraethylammonium bromide Chemical compound [Br-].CC[N+](CC)(CC)CC HWCKGOZZJDHMNC-UHFFFAOYSA-M 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、電気化学発光（Ｅｌｅｃｔｒｏ ｃｈｅｍ
ｉｌｕ−ｍｉｎｅｓｃｅｎｃｅ）現象を利用した表示素
子に関する。[Detailed Description of the Invention] [Industrial Application Field] This invention is directed to electrochemiluminescence
The present invention relates to a display element that utilizes the (ilu-minescence) phenomenon.
電気化学発光現象は、例えばアセト二トリル等の非水溶
媒にアントラセン，ルブレン等の有機発光物質と必要に
応じて四エチルアンモニウムブロマイド等の電解質を熔
解した溶液中に、表示電極と対向電極とを浸漬し、この
両電極に交流電圧を印加した場合に電極付近が発光する
現象であり、この発光は、電極に印加された電圧により
電極付近に生じる発光物質のアニオンとカチオンが中和
する際に生じる電気励起状態にある発光物分子が基底状
態に戻る際に光子が放出されて起こるものである（特公
昭５５− ２０２３５号公報，同５６− ２９５８号公
報参照）。The electrochemiluminescence phenomenon is achieved by dissolving a display electrode and a counter electrode in a solution prepared by dissolving an organic luminescent substance such as anthracene or rubrene in a non-aqueous solvent such as acetonitrile, and optionally an electrolyte such as tetraethylammonium bromide. This is a phenomenon in which light is emitted near the electrodes when an AC voltage is applied to both electrodes.This light emission occurs when the anions and cations of the luminescent substance generated near the electrodes are neutralized by the voltage applied to the electrodes. This occurs when photons are emitted when luminescent molecules in an electrically excited state return to their ground state (see Japanese Patent Publication Nos. 55-20235 and 56-2958).
かかる発光現象を利用した表示素子は、前記公報あるい
は特開昭５２− ５０１９７号公報等に開示されている
如く対向電極を表示電極より大きな面積とし、一般には
両電極とも白金等の化学的に安定な金属材料にて形成し
、交流電圧により駆動するものである（特開昭５３−３
２８８９号公報参照）。Display elements utilizing such a light emitting phenomenon have a counter electrode with a larger area than the display electrode, as disclosed in the above-mentioned publication or Japanese Patent Application Laid-Open No. 52-50197, and generally both electrodes are made of chemically stable material such as platinum. It is made of metal material and driven by alternating current voltage (Japanese Patent Laid-Open No. 53-3
(See Publication No. 2889).
このような従来の電気化学発光素子は、その発光現象に
化学反応を伴うため反応速度が遅く、このため、印加す
る交流電圧の周波数は数Ｈｚ程度にする必要があり、発
光が断続的に行われるという問題を有していた。In such conventional electrochemiluminescent devices, the reaction rate is slow because the light emission phenomenon involves a chemical reaction. Therefore, the frequency of the applied alternating current voltage needs to be approximately several Hz, and the light emission occurs intermittently. It had the problem of being exposed.
そして、連続的な発光を得るため、直流電圧を印加する
と、電位は一定であっても、面積の小さい電極（表示電
極）に電流が集中するため、その電極表面に不動！３膜
生成等の副反応が生じて、発光強度は数秒で減衰してし
まうという問題を有していた。In order to obtain continuous light emission, when a DC voltage is applied, even if the potential is constant, the current concentrates on the electrode (display electrode) with a small area, so it remains stationary on the surface of that electrode! There was a problem in that side reactions such as the formation of a 3-layer film occurred, and the emission intensity attenuated in a few seconds.
この発明は、以上のような問題に着目して考えられたも
のであり１、直流電圧の印加による駆動を可能とするこ
とにより、連続的な発光を行うことのできる電気化学発
光素子の提供を目的とする。The present invention was conceived with a focus on the above-mentioned problems. 1. It is an object of the present invention to provide an electrochemiluminescent device that can continuously emit light by being driven by applying a DC voltage. purpose.
前記課題を解決するため、この発明は、有機発光物質を
熔解した有機非水溶媒溶液中に、同一平面に形成した大
面積の表示電極およびこの表示電極に比して小面積の対
向電極を浸漬し、前記表示電極が負および前記対向電極
が正となる直流電圧を印加することにし、特に、前記表
示電極はアルミニュウムで、前記対向電極は白金で形成
することが最良である。In order to solve the above-mentioned problems, the present invention immerses a display electrode with a large area formed on the same plane and a counter electrode with a smaller area than the display electrode in an organic non-aqueous solvent solution in which an organic light-emitting substance is dissolved. However, a DC voltage is applied such that the display electrode is negative and the counter electrode is positive. In particular, it is best to form the display electrode with aluminum and the counter electrode with platinum.
表示電極において、対向電極に対し電荷密度が減少し、
副反応が抑制され、直流電圧の印加による連続的な発光
が行われる。In the display electrode, the charge density decreases with respect to the counter electrode,
Side reactions are suppressed, and continuous light emission is achieved by applying DC voltage.
この発明を実施例について説明すると、透明な厚さ １
．０〜３．０ ｍｍのガラス基板１に、スパッタリング
により膜厚０．１〜１．０μ−の白金を製膜して対向電
極２とし、次に、真空蒸着法で膜厚０．２〜１．５μ■
のアルミニュウムを製膜した後、光りソグラフィ法によ
り所定の形状にパターニングして表示電極３とする。こ
の場合、対向電極２の面積は表示電極３の面積に比して
小面積となるように形成した。To explain this invention with reference to an embodiment, transparent thickness 1
．． A platinum film with a thickness of 0.1 to 1.0 μm was formed on a glass substrate 1 of 0 to 3.0 mm by sputtering to form a counter electrode 2, and then a film of platinum with a thickness of 0.2 to 1 μm was formed by vacuum evaporation. .5μ■
After forming a film of aluminum, it is patterned into a predetermined shape by photolithography to form the display electrode 3. In this case, the area of the counter electrode 2 was formed to be smaller than the area of the display electrode 3.
一方、透明な厚さ １．０〜３．Ｏｎ＋ｍのガラス基板
４の周縁上に幅２．０〜５．Ｏｍｎ＋のシリコーンゴム
製のスペーサ５をエポキシ樹脂で接着した。On the other hand, the transparent thickness is 1.0 to 3. On the periphery of the On+m glass substrate 4, a width of 2.0 to 5. A spacer 5 made of Omn+ silicone rubber was adhered with epoxy resin.
そして、画電極２．３が内側に位置するように微少間隔
を有するように側基板１，４をエポキシ樹脂で接着した
。Then, the side substrates 1 and 4 were bonded with epoxy resin so that there was a slight gap between them so that the picture electrodes 2.3 were positioned on the inside.
最後に、有機発光物質として０．１〜５．０ミリモルト
リス（２，２’−ビピリジン）ルテニウム（ｎ）を水溶
媒であるアセトニトリルに熔解した有機水溶媒溶液６を
デイスペンサーを用いて側基板１゜４間へ注入して電気
化学発光素子７を作成した。Finally, an organic aqueous solvent solution 6 in which 0.1 to 5.0 mmol tris(2,2'-bipyridine)ruthenium (n) as an organic luminescent substance is dissolved in acetonitrile as an aqueous solvent is applied to the side substrate using a dispenser. An electrochemiluminescent device 7 was prepared by injecting the solution into a 1°4 space.
この電気化学発光素子７は、表示電極３が負および対向
電極２が正となる５〜ＩＯＶの直流電圧を印加すること
により、赤色（λｍａｘ ＝ ６００ｎｍ）の連続的な
発光を得ることができた。これは、表示電極３において
、対向電極２に対し、電荷密度が減少し、ルテニウム錯
体の分解反応や不動態膜生成等の副反応が抑制されたた
めである。This electrochemiluminescent device 7 was able to obtain continuous red (λmax = 600 nm) light emission by applying a DC voltage of 5 to IOV with the display electrode 3 being negative and the counter electrode 2 being positive. . This is because the charge density of the display electrode 3 is reduced relative to the counter electrode 2, and side reactions such as the decomposition reaction of the ruthenium complex and the formation of a passive film are suppressed.
以上のようにこの発明によれば、直流電圧の印加による
連続的な発光が行なえるようになり、連続表示を行う表
示装置の表示素子としてこの種電気化学発光素子を利用
することを可能とするものである。As described above, according to the present invention, continuous light emission can be performed by applying a DC voltage, and this type of electrochemiluminescent device can be used as a display element of a display device that performs continuous display. It is something.
第１図はこの発明による電気化学発光素子の一実施例の
要部断面図、第２図は第１図のｎ−ｎ線断面図である。
１．４・−・基板 ２一対向電極 ３・−表示電極５−
スペーサ ６−有機非水溶媒溶液FIG. 1 is a sectional view of a main part of an embodiment of an electrochemiluminescent device according to the present invention, and FIG. 2 is a sectional view taken along line nn in FIG. 1. 1.4--Substrate 2-Counter electrode 3--Display electrode 5-
Spacer 6-Organic non-aqueous solvent solution
Claims (2)
同一平面に形成した大面積の表示電極およびこの表示電
極に比して小面積の対向電極を浸漬し、前記表示電極が
負および前記対向電極が正となる直流電圧を印加するこ
とにより、前記有機発光物質を電気化学的に発光させる
ことを特徴とする電気化学発光素子。(1) In an organic non-aqueous solvent solution in which an organic luminescent substance is dissolved,
By immersing a display electrode with a large area formed on the same plane and a counter electrode with a small area compared to the display electrode, and applying a DC voltage such that the display electrode is negative and the counter electrode is positive, the organic An electrochemiluminescent device characterized by electrochemically causing a luminescent substance to emit light.
は白金であることを特徴とする前記特許請求の範囲第（
１）項記載の電気化学発光素子。(2) The display electrode is made of aluminum, and the counter electrode is made of platinum.
The electrochemiluminescent device according to item 1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63108047A JPH01277827A (en) | 1988-04-30 | 1988-04-30 | Electrochemical light emitting element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63108047A JPH01277827A (en) | 1988-04-30 | 1988-04-30 | Electrochemical light emitting element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01277827A true JPH01277827A (en) | 1989-11-08 |
Family
ID=14474583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63108047A Pending JPH01277827A (en) | 1988-04-30 | 1988-04-30 | Electrochemical light emitting element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01277827A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100350322C (en) * | 2003-10-21 | 2007-11-21 | 株式会社东芝 | Display device and driving method for display device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50138795A (en) * | 1974-04-23 | 1975-11-05 | ||
| JPS5250197A (en) * | 1975-10-20 | 1977-04-21 | Seiko Instr & Electronics Ltd | Electrochemical luminescent dispaly device |
-
1988
- 1988-04-30 JP JP63108047A patent/JPH01277827A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50138795A (en) * | 1974-04-23 | 1975-11-05 | ||
| JPS5250197A (en) * | 1975-10-20 | 1977-04-21 | Seiko Instr & Electronics Ltd | Electrochemical luminescent dispaly device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100350322C (en) * | 2003-10-21 | 2007-11-21 | 株式会社东芝 | Display device and driving method for display device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Kalyuzhny et al. | Stability of thin-film solid-state electroluminescent devices based on tris (2, 2 ‘-bipyridine) ruthenium (II) complexes | |
| Miao et al. | Electrogenerated chemiluminescence 69: The Tris (2, 2 ‘-bipyridine) ruthenium (II),(Ru (bpy) 32+)/Tri-n-propylamine (TPrA) system revisited A new route involving TPrA•+ Cation Radicals | |
| JP4635997B2 (en) | Electrochemiluminescence device and driving method of electrochemiluminescence element | |
| Nobeshima et al. | Reaction mechanism and improved performance of solution-based electrochemiluminescence cell driven by alternating current | |
| DE69841736D1 (en) | Field emission electron source, process for their preparation and use thereof | |
| WO2010026921A1 (en) | Display device and method for driving display device | |
| WO2012127915A1 (en) | Transparent conductive film, substrate having transparent conductive film, and organic electroluminescent element using same and manufacturing method for same | |
| Kim et al. | Smart approach to liquid electrolyte-based multi-colored electrochemiluminescence for lighting applications | |
| Bartelt et al. | Electrochemiluminescence at band array electrodes | |
| Koinuma et al. | White electrogenerated chemiluminescence using an anthracene derivative host and fluorescent dopants for microfluidic self-emissive displays | |
| Okada et al. | Microfluidic electrogenerated chemiluminescence cells using aluminum-doped zinc oxide nanoparticles as an electron injection layer | |
| JP2009230073A (en) | Display | |
| JP2005302332A (en) | Electrochemical light-emitting element | |
| US5903101A (en) | Optical element and method of manufacturing the same | |
| Nishimura et al. | Solution electrochemiluminescent cell using tris (phenylpyridine) iridium | |
| Kado et al. | Enhanced electrochemiluminescence by use of nanoporous TiO2 electrodes: Electrochemiluminescence devices operated with alternating current | |
| JPH01277827A (en) | Electrochemical light emitting element | |
| US6312837B1 (en) | Optical element and method of manufacturing the same | |
| JP2008047450A (en) | Electrochemical light-emitting element and electrochemical light-emitting device | |
| Walton et al. | Ultrasonic enhancement of electrochemiluminescence | |
| JP2008084644A (en) | Electrochemical light-emitting device and method for driving electrochemical light-emitting element | |
| US3906283A (en) | Electrochemical luminescent solutions and devices incorporating such solutions | |
| JPH11109890A (en) | Plasma address type organic el device | |
| OZAWA et al. | Device Lifetime Improvement and Efficiency of Upconverted Blue Electrochemiluminescence From 9, 10-Diphenylanthracene With DNA/Ru (bpy) 32+ Hybrid Film | |
| US20170064792A1 (en) | Coplanar electrode arrangement for electroluminescent devices |