JPS6226358B2 - - Google Patents
Info
- Publication number
- JPS6226358B2 JPS6226358B2 JP52073507A JP7350777A JPS6226358B2 JP S6226358 B2 JPS6226358 B2 JP S6226358B2 JP 52073507 A JP52073507 A JP 52073507A JP 7350777 A JP7350777 A JP 7350777A JP S6226358 B2 JPS6226358 B2 JP S6226358B2
- Authority
- JP
- Japan
- Prior art keywords
- display
- electrochromic
- solution
- electrode
- general formula
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 229910052783 alkali metal Inorganic materials 0.000 claims description 4
- 150000001340 alkali metals Chemical class 0.000 claims description 4
- 229910052792 caesium Inorganic materials 0.000 claims description 2
- 229910052744 lithium Inorganic materials 0.000 claims description 2
- 229910052700 potassium Inorganic materials 0.000 claims description 2
- 229910052708 sodium Inorganic materials 0.000 claims description 2
- 239000000463 material Substances 0.000 description 11
- ROFVEXUMMXZLPA-UHFFFAOYSA-N Bipyridyl Chemical group N1=CC=CC=C1C1=CC=CC=N1 ROFVEXUMMXZLPA-UHFFFAOYSA-N 0.000 description 6
- 239000003086 colorant Substances 0.000 description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 5
- 238000004040 coloring Methods 0.000 description 5
- 239000011521 glass Substances 0.000 description 5
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- 229910052697 platinum Inorganic materials 0.000 description 3
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 description 3
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 3
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 2
- ZHNUHDYFZUAESO-UHFFFAOYSA-N Formamide Chemical compound NC=O ZHNUHDYFZUAESO-UHFFFAOYSA-N 0.000 description 2
- ATHHXGZTWNVVOU-UHFFFAOYSA-N N-methylformamide Chemical compound CNC=O ATHHXGZTWNVVOU-UHFFFAOYSA-N 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- 229910021607 Silver chloride Inorganic materials 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- 239000000010 aprotic solvent Substances 0.000 description 2
- 238000005562 fading Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 2
- KBLZDCFTQSIIOH-UHFFFAOYSA-M tetrabutylazanium;perchlorate Chemical compound [O-]Cl(=O)(=O)=O.CCCC[N+](CCCC)(CCCC)CCCC KBLZDCFTQSIIOH-UHFFFAOYSA-M 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical class [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910013684 LiClO 4 Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 1
- KVNRLNFWIYMESJ-UHFFFAOYSA-N butyronitrile Chemical compound CCCC#N KVNRLNFWIYMESJ-UHFFFAOYSA-N 0.000 description 1
- 229940075397 calomel Drugs 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 125000004802 cyanophenyl group Chemical group 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- ZOMNIUBKTOKEHS-UHFFFAOYSA-L dimercury dichloride Chemical compound Cl[Hg][Hg]Cl ZOMNIUBKTOKEHS-UHFFFAOYSA-L 0.000 description 1
- ZMXDDKWLCZADIW-UHFFFAOYSA-N dimethylformamide Substances CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000003349 gelling agent Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- MHCFAGZWMAWTNR-UHFFFAOYSA-M lithium perchlorate Chemical compound [Li+].[O-]Cl(=O)(=O)=O MHCFAGZWMAWTNR-UHFFFAOYSA-M 0.000 description 1
- 229910001486 lithium perchlorate Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- XJRBAMWJDBPFIM-UHFFFAOYSA-N methyl vinyl ether Chemical compound COC=C XJRBAMWJDBPFIM-UHFFFAOYSA-N 0.000 description 1
- MCSAJNNLRCFZED-UHFFFAOYSA-N nitroethane Chemical compound CC[N+]([O-])=O MCSAJNNLRCFZED-UHFFFAOYSA-N 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- BAZAXWOYCMUHIX-UHFFFAOYSA-M sodium perchlorate Chemical compound [Na+].[O-]Cl(=O)(=O)=O BAZAXWOYCMUHIX-UHFFFAOYSA-M 0.000 description 1
- 229910001488 sodium perchlorate Inorganic materials 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- WGHUNMFFLAMBJD-UHFFFAOYSA-M tetraethylazanium;perchlorate Chemical compound [O-]Cl(=O)(=O)=O.CC[N+](CC)(CC)CC WGHUNMFFLAMBJD-UHFFFAOYSA-M 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000012463 white pigment Substances 0.000 description 1
Landscapes
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
Description
本発明は多色表示用エレクトロクロミツク表示
素子の改良に関するものである。
従来、エレクトロクロミツク表示素子として
は、一般式
〔但し式中のR1、R2は長鎖アルキル基、ベンジル
基、シアノフエニル基、Y1、Y2は水素、ハロゲ
ン、アルキル基、Ｚは一価の陰イオンを示す〕に
て表わされるビピリジル誘導体を電気発消色材料
とするものが知られている。
しかしながら、上記エレクトロクロミツク表示
素子は電気化学的に一電子還元されると、無色又
は淡色のビピリジウムカチオンが有色のカチオン
ラジカルに変換されるが、さらに二電子還元され
ると、色変化が不可逆性を示して長期間の使用に
耐えないものに変化するため、専ら表示素子の色
変化は二色に限られ、応用範囲が狭い欠点があ
る。
このようなことから、上記一般式のビピリジル
誘導体を二種以上組合せて三色以上の色変化が可
能な表示素子を構成することが考えられている。
しかし、この表示素子にあつては、各々のビピリ
ジル誘導体の還元電位が近似しているため、それ
ら誘導体の中間色が現れ、これを防止するための
電位コントロール装置を付設しなければならず、
価格の高騰化、操作の煩雑さを招く欠点があつ
た。
これに対し、本発明者は多色（三色以上）の表
示が可能な表示素子を得るために種々研究した結
果、電気発消色材料として、一般式（Me）o
（Ｒ）（但し式中のMeはアルカリ金属、Ｒは２・
2′−ビピリジル、ｎは０、１、２に変化する定数
を示す〕にて表わされる化合物を用いることによ
り、一電子還元すると、上記式中のＲが０価から
−１価に可逆的に変化し、さらに二電子還元する
と、上記式中のＲが−１価から−２価に可逆的に
変化して、三通りの表示を極めて簡単に行なえる
多色表示用エレクトロクロミツク表示素子を見い
出した。
即ち、本発明の多色表示用エレクトロクロミツ
ク表示素子は透明壁部を備え、少なくとも表示電
極及び対向電極に、一般式（Me）o（Ｒ）〔但し、
式中のMeはLi、Na、Ｋ、Cs等のアルカリ金属、
Ｒは２・2′−ビピリジン、ｎは０、１、２の範囲
内の変数を示す〕にて表わされる電気発消色材料
を含有した溶液を接触せしめてなるものである。
なお、前記Ｒとしては２・2′−ビピリジンに実質
的に電気発消色材料としての機能を損わない置換
基を導入したものを用いてもよい。
本発明に用いる透明壁部としては、たとえば透
明ガラス板、透明プラスチツク板などが適用でき
る。
本発明に用いる表示電極及び対向電極として
は、上記一般式の電気発消色材料に対して化学的
に安定な導電材料であれば何でもよいが、とくに
白金、金などの貴金属が適している。この場合、
酸化還元電位の制御を簡便に行なう目的から、必
要に応じて第三電極として、Ag／AgCl電極、カ
ロメル電極等の標準電極を設けてもよい。
本発明に使用する上記一般式にて表わされる電
気発消色材料が含有した溶液としては、
(i) 上記一般式の電気発消色材料とテトラエチル
アンモニウムパークロレート、テトラブチルア
ンモニウムパークロレート等の非金属系電解質
とを非プロトン性溶媒に溶解したものと、
(ii) ２・２−ビピリジルとリチウムパークロレー
ト、ナトリウムパークロレート、ヨウ化カリウ
ム等のアルカリ金属系電解質とを非プロトン性
溶媒に溶解したものと、
を挙げることができる。
上記一般式の電気発消色材料が溶液中に存在す
る量は通常0.1〜10モル／の範囲にすることが
望ましい。
上記非プロトン性溶媒としては、たとえばアク
リロニトリル、アセトニトリル、ブチロニトリ
ル、プロピレンカーボネート、ホルムアミド、
Ｎ・N′−ジメチルホルムアミド、ジメチルスル
ホキシド、１・２−ジエトキシエタンジクロロメ
タン、テトラヒドロフラン、Ｎ−メチルホルムア
ミド、ニトロエタン、ピリジン等から選ばれる１
種または２種以上の混合物が適用できる。
なお、本発明においては必要に応じて電気発消
色材料の拡散を防止する観点から、上記一般式の
電気発消色材料を含有した溶液に、Ｎ−メチロー
ル化ナイロン、ポリビニピロリドン、メチルビニ
ルエーテル、無水マレイン酸共重合体等のゲル化
剤を配合してもよい。また、必要に応じて視覚的
な見易さを向上せしめる観点から、上記一般式の
電気発消色材料を含有した溶液に、二酸化チタン
などの白色顔料その他の着色顔料を分散せしめて
もよい。
次に、本発明の実施例を図面を参照して説明す
る。
実施例 １
まず、
The present invention relates to improvements in electrochromic display elements for multicolor display. Conventionally, electrochromic display elements use the general formula [However, R 1 and R 2 in the formula are long-chain alkyl groups, benzyl groups, and cyanophenyl groups, Y 1 and Y 2 are hydrogen, halogen, and alkyl groups, and Z represents a monovalent anion.] It is known that a derivative is used as an electrically colorable and decolorable material. However, in the above electrochromic display element, when electrochemically reduced with one electron, the colorless or light-colored bipyridium cation is converted into a colored cation radical, but when further reduced with two electrons, the color changes. Since it shows irreversibility and changes to something that cannot withstand long-term use, the color change of the display element is limited to two colors, which has the disadvantage that the range of application is narrow. For this reason, it has been considered to combine two or more types of bipyridyl derivatives of the above general formula to construct a display element capable of changing colors in three or more colors.
However, in this display element, since the reduction potentials of each bipyridyl derivative are similar, an intermediate color appears between these derivatives, and a potential control device must be attached to prevent this.
There were drawbacks that led to soaring prices and complicated operations. On the other hand, as a result of various researches to obtain a display element capable of displaying multiple colors (three or more colors), the inventors of the present invention have developed an electrochromic coloring material using the general formula (Me o ).
(R) (However, Me in the formula is an alkali metal, R is 2.
2'-bipyridyl, n is a constant that changes from 0, 1, and 2]. When R is reduced by one electron, R in the above formula reversibly changes from 0 valence to -1 valence. When R is changed and further reduced with two electrons, R in the above formula changes reversibly from -1 valence to -2 valence, thereby creating an electrochromic display element for multicolor display that can extremely easily perform three types of display. I found it. That is, the electrochromic display element for multicolor display of the present invention has a transparent wall portion, and at least the display electrode and the counter electrode have the general formula (Me) o (R) [however,
Me in the formula is an alkali metal such as Li, Na, K, Cs,
R is 2,2'-bipyridine, n is a variable within the range of 0, 1, and 2].
In addition, as the above-mentioned R, a 2,2'-bipyridine having a substituent introduced therein which does not substantially impair its function as an electrochromic/erasable material may be used. As the transparent wall portion used in the present invention, for example, a transparent glass plate, a transparent plastic plate, etc. can be applied. As the display electrode and the counter electrode used in the present invention, any conductive material may be used as long as it is chemically stable with respect to the electrochromic/erasable material of the above general formula, but noble metals such as platinum and gold are particularly suitable. in this case,
For the purpose of easily controlling the redox potential, a standard electrode such as an Ag/AgCl electrode or a calomel electrode may be provided as the third electrode, if necessary. The solution containing the electrochromic coloring and fading material represented by the above general formula used in the present invention includes (i) the electrochromic coloring and fading material of the above general formula and a non-containing material such as tetraethylammonium perchlorate and tetrabutylammonium perchlorate; (ii) 2,2-bipyridyl and an alkali metal electrolyte such as lithium perchlorate, sodium perchlorate, potassium iodide, etc. dissolved in an aprotic solvent. I can list things and . It is desirable that the amount of the electrochromic coloring and erasing material of the above general formula present in the solution is usually in the range of 0.1 to 10 mol/. Examples of the aprotic solvent include acrylonitrile, acetonitrile, butyronitrile, propylene carbonate, formamide,
1 selected from N・N'-dimethylformamide, dimethylsulfoxide, 1,2-diethoxyethanedichloromethane, tetrahydrofuran, N-methylformamide, nitroethane, pyridine, etc.
Species or mixtures of two or more species can be applied. In addition, in the present invention, N-methylolated nylon, polyvinypyrrolidone, methyl vinyl ether is added to the solution containing the electrochromic material of the above general formula from the viewpoint of preventing diffusion of the electrochromic material. , a gelling agent such as a maleic anhydride copolymer may be added. Further, from the viewpoint of improving visual visibility, if necessary, a white pigment such as titanium dioxide or other colored pigments may be dispersed in the solution containing the electrochromic coloring/decoloring material of the above general formula. Next, embodiments of the present invention will be described with reference to the drawings. Example 1 First,
【式】0.01モル及
びテトラブチルアンモニウムパークロレート0.1
モルをプロピレンカーボネート溶液100mlに混
合、溶解して電気発消色性溶液を調合した。
次いで、図に示す如く透明ガラス板１とアルミ
ナ製の絶縁性支持体２とを対向させ、この支持体
２の対向面に白金製の表示電極３，３，３、白金
製の対向電極４，４及びAg／AgClの標準電極５
を配設した後、上記ガラス板１、支持体２の間に
上述の電気発消色性溶液６を封止板７を介して収
容して多色表示用エレクトロクロミツク表示素子
を製作した。
しかして、上記表示素子の標準電極５により表
示電極３，３，３の電位を制御させながら、該表
示電極３，３，３の電位を変えたところ、全く電
圧を印加しない場合には無色であつたが、電圧が
２・2′−ビピリジンの一電子還元電位に達する
と、表示電極３，３，３付近の電気発消色性溶液
が赤色に変換された。さらに還元電位を変えて負
電位に移行させ、二電子還元電位に達すると、表
示電極３，３，３付近の電気発消色性溶液が赤色
から緑色に変換された。なお、電位を徐々に元に
戻すと、表示電極３，３，３付近の電気発消色性
溶液が緑色から赤色、さらに無色に変換されて表
示が消滅した。
上記サイクルを10000回繰り返し行なつても色
変化（表示動作）に何んら支障を生じなかつた。
実施例 ２
まず[Formula] 0.01 mol and tetrabutylammonium perchlorate 0.1
A mole was mixed and dissolved in 100 ml of propylene carbonate solution to prepare an electrochromic and erasable solution. Next, as shown in the figure, the transparent glass plate 1 and the insulating support 2 made of alumina are placed opposite each other, and on the opposing surface of this support 2, display electrodes 3, 3, 3 made of platinum, counter electrodes 4 made of platinum, 4 and Ag/AgCl standard electrode 5
After that, the electrochromic solution 6 was placed between the glass plate 1 and the support 2 via the sealing plate 7 to produce an electrochromic display element for multicolor display. However, when we changed the potentials of the display electrodes 3, 3, 3 while controlling the potentials of the display electrodes 3, 3, 3 using the standard electrode 5 of the display element, we found that when no voltage was applied, no color appeared. However, when the voltage reached the one-electron reduction potential of 2.2'-bipyridine, the electrochromic and decolorizable solution near the display electrodes 3, 3, and 3 was converted to red. Further, the reduction potential was changed to a negative potential, and when the two-electron reduction potential was reached, the electrochromic and decolorable solution near the display electrodes 3, 3, and 3 was converted from red to green. Incidentally, when the potential was gradually returned to the original state, the electrochromic and decolorizable solution near the display electrodes 3, 3, and 3 was changed from green to red and further to colorless, and the display disappeared. Even after repeating the above cycle 10,000 times, no problem occurred in color change (display operation). Example 2 First
【式】0.1モル及びLiClO40.1
モルをプロピレンカーボネート溶液100mlに溶解
した後、この溶解液に二酸化チタン（ルチル型）
５ｇ及びＮ−メチロール化ナイロンを適量添加し
てゲル状の電気発消色性溶液を調合した。
次いで、上記実施例１と同様、透明ガラス板１
と絶縁性支持体２との間に上述のゲル状電気発消
色性溶液６を封止板７を介して収容し多色表示用
エレクトロクロミツク表示素子を製作した。
しかして、上記表示素子の標準電極５により表
示電極３，３，３の電位を制御させながら、該表
示電極３，３，３の電位を変えたところ、前記実
施例１と同様全く電圧を印加しない場合には無色
であつたが、電圧が２・2′−ビピリジルの一電子
還元電位に達すると、表示電極３，３，３付近の
ゲル状電気発消色性溶液は赤色に変換され、さら
に電圧が二電子還元電位に達すると、該電気発消
色性溶液は赤色から緑色に変換されて、三色の表
示が行なえた。なお、電位を徐々に元に戻すと、
表示電極３，３，３付近のゲル状電気発消色性溶
液が緑色から赤色、さらに無色に変換されて表示
が消滅した。
上記サイクルを10000回繰り返し行なつても色
変化（表示動作）に何んら支障を生じなかつた。
以上詳述した如く、本発明によれば極めて簡単
な操作で耐用寿命を損なうことなく三通りの異な
る色表示を行なうことができる極めて使用範囲が
広く実用価値の高い多色表示用エレクトロクロミ
ツク表示素子を提供できるものである。[Formula] After dissolving 0.1 mol and 0.1 mol of LiClO 4 in 100 ml of propylene carbonate solution, add titanium dioxide (rutile type) to this solution.
A gel-like electrochromic and decolorizable solution was prepared by adding 5 g of the mixture and an appropriate amount of N-methylolated nylon. Next, as in Example 1 above, a transparent glass plate 1
The above-mentioned gel electrochromic/erasable solution 6 was placed between the insulating support 2 and the sealing plate 7 to produce an electrochromic display element for multicolor display. However, when the potentials of the display electrodes 3, 3, 3 were changed while controlling the potentials of the display electrodes 3, 3, 3 using the standard electrode 5 of the display element, no voltage was applied as in Example 1. Otherwise, it was colorless, but when the voltage reached the one-electron reduction potential of 2,2'-bipyridyl, the gel-like electrochromic and erasable solution near the display electrodes 3, 3, 3 was converted to red. When the voltage further reached the two-electron reduction potential, the electrochromic and decolorizable solution was converted from red to green, resulting in a three-color display. Furthermore, if the potential is gradually returned to its original value,
The gel-like electrochromic and erasable solution near the display electrodes 3, 3, and 3 changed from green to red and then colorless, and the display disappeared. Even after repeating the above cycle 10,000 times, no problem occurred in color change (display operation). As described in detail above, according to the present invention, an electrochromic display for multi-color display is capable of displaying three different colors with extremely simple operation without impairing its service life, and has an extremely wide range of use and high practical value. It is possible to provide an element.
図は本発明の多色表示用エレクトロクロミツク
表示素子の一形態を示す断面図である。
１……透明ガラス板、２……絶縁性支持体、
３，３，３……表示電極、４，４……対向電極。
The figure is a sectional view showing one form of the electrochromic display element for multicolor display according to the present invention. 1... Transparent glass plate, 2... Insulating support,
3, 3, 3... Display electrode, 4, 4... Counter electrode.
Claims (1)
向電極に、一般式（Me）ｎ（Ｒ）〔但し、式中の
MeはLi、Na、Ｋ、Cs等のアルカリ金属、Ｒは
２・2′−ビピリジル、ｎは０、１、２の範囲内の
変数を示す〕にて表わされる電気発消色材料を含
有した溶液を接触せしめてなる多色表示用エレク
トロクロミツク表示素子。[Claims] 1. A transparent wall portion is provided, and at least the display electrode and the counter electrode have the general formula (Me)n(R) [However, in the formula,
Me is an alkali metal such as Li, Na, K, Cs, etc.; R is 2-2'-bipyridyl; n is a variable within the range of 0, 1, and 2. An electrochromic display element for multicolor display made by contacting a solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7350777A JPS548184A (en) | 1977-06-21 | 1977-06-21 | Electrochromic display element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7350777A JPS548184A (en) | 1977-06-21 | 1977-06-21 | Electrochromic display element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS548184A JPS548184A (en) | 1979-01-22 |
| JPS6226358B2 true JPS6226358B2 (en) | 1987-06-08 |
Family
ID=13520222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7350777A Granted JPS548184A (en) | 1977-06-21 | 1977-06-21 | Electrochromic display element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS548184A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19851898A1 (en) | 1998-11-11 | 2000-06-15 | Rieter Ag Maschf | Turning station for wraps |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5032958A (en) * | 1973-05-04 | 1975-03-29 |
-
1977
- 1977-06-21 JP JP7350777A patent/JPS548184A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5032958A (en) * | 1973-05-04 | 1975-03-29 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS548184A (en) | 1979-01-22 |
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