JPH0772514A - Electrochromic display - Google Patents
Electrochromic displayInfo
- Publication number
- JPH0772514A JPH0772514A JP5245941A JP24594193A JPH0772514A JP H0772514 A JPH0772514 A JP H0772514A JP 5245941 A JP5245941 A JP 5245941A JP 24594193 A JP24594193 A JP 24594193A JP H0772514 A JPH0772514 A JP H0772514A
- Authority
- JP
- Japan
- Prior art keywords
- transparent electrode
- display
- electrochromic display
- display device
- electrode
- 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
- 239000000463 material Substances 0.000 claims abstract description 33
- DCYOBGZUOMKFPA-UHFFFAOYSA-N iron(2+);iron(3+);octadecacyanide Chemical compound [Fe+2].[Fe+2].[Fe+2].[Fe+3].[Fe+3].[Fe+3].[Fe+3].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-] DCYOBGZUOMKFPA-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229960003351 prussian blue Drugs 0.000 claims abstract description 15
- 239000013225 prussian blue Substances 0.000 claims abstract description 15
- 239000008151 electrolyte solution Substances 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000000151 deposition Methods 0.000 claims description 2
- 238000005562 fading Methods 0.000 claims 1
- 239000003566 sealing material Substances 0.000 abstract description 3
- 239000003792 electrolyte Substances 0.000 abstract description 2
- 239000010408 film Substances 0.000 description 19
- 239000000758 substrate Substances 0.000 description 4
- ZNOKGRXACCSDPY-UHFFFAOYSA-N tungsten trioxide Chemical compound O=[W](=O)=O ZNOKGRXACCSDPY-UHFFFAOYSA-N 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
- IUJMNDNTFMJNEL-UHFFFAOYSA-K iridium(3+);trihydroxide Chemical compound [OH-].[OH-].[OH-].[Ir+3] IUJMNDNTFMJNEL-UHFFFAOYSA-K 0.000 description 1
- 230000006386 memory function Effects 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000010409 thin film 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
- 238000001771 vacuum deposition Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Landscapes
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、エレクトロクロミック
表示装置の改良に関する。FIELD OF THE INVENTION The present invention relates to improvements in electrochromic display devices.
【０００２】[0002]
【従来の技術】従来の代表的な透過型エレクトロクロミ
ック（以下、ＥＣと略称する）装置は、下記に示すＥＣ
材料膜の組み合わせによって構成されている。 例［１］ 酸化タングステン（ＷＯ3）とプルシアンブ
ルー（ＰＢ）の組み合わせ。 青色 ⇔ 無色の色変化（調光ガラス用） 例［２］ 酸化タングステン（ＷＯ3）と水酸化イリジ
ウム｛Ｉｒ(ＯＨ)2｝の組み合わせ。 暗青色 ⇔ 無色の色変化（防眩ミラー・サングラス用）2. Description of the Related Art A typical conventional transmissive electrochromic (hereinafter abbreviated as EC) device is the EC shown below.
It is composed of a combination of material films. Example [1] A combination of tungsten oxide (WO 3 ) and Prussian blue (PB). Blue ⇔ colorless color change (for light control glass) Example [2] A combination of tungsten oxide (WO 3 ) and iridium hydroxide {Ir (OH) 2 }. Dark blue ⇔ colorless color change (for anti-glare mirror / sunglasses)
【０００３】[0003]
【発明が解決しようとする課題】前記例［１］、［２］
とも各透明電極に成膜されたＥＣ膜が同時に発消色する
ため、表示が二重写しになる。さらにＷＯ3やＩｒ（Ｏ
Ｈ）2の透明電極への膜付け技術は真空蒸着が主流とさ
れているため、設備コストが大きい。また、例［１］で
は、ＰＢの鮮やかな青色発色がＷＯ3により阻害され
る。例［２］は色が悪く表示用に不向きである。さらに
また、例［２］は薄膜型の電解質層であるが故にメモリ
ー機能［外部回路が開放状態（抵抗の無限大）であると
き、その表示状態（色）を保持できる機能］がない。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention [1], [2]
In both cases, since the EC film formed on each transparent electrode simultaneously develops and disappears color, the display is duplicated. Furthermore, WO 3 and Ir (O
Since the vacuum deposition is the mainstream of H) 2 film deposition technology on transparent electrodes, the equipment cost is high. Further, in Example [1], the bright blue color development of PB is inhibited by WO 3 . The example [2] has bad color and is not suitable for display. Furthermore, since the example [2] is a thin film type electrolyte layer, it does not have a memory function [a function capable of maintaining the display state (color) when the external circuit is in an open state (infinite resistance)).
【０００４】[0004]
【発明の目的】本発明は、前述した問題を解消するため
になされたものであって、両ＥＣ膜が同時発消色しても
二重写しとならないエレクトロクロミック表示装置を提
供することを主たる目的とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide an electrochromic display device in which even if both EC films are simultaneously colored and erased, double copying is not performed. The main purpose.
【０００５】[0005]
【課題を解決するための手段】本発明は、ＥＣ材を成膜
した透明電極を対向配置し、その間に電解液を封入して
なるエレクトロクロミック表示装置において、着消色可
能なＥＣ材を成膜した第１の透明電極と、この第１の透
明電極の着消色反応を補償可能な前記ＥＣ材と同種類の
ＥＣ材を前記第１の透明電極のネガパターン部に相当す
る部位に成膜した第２の透明電極とを具備していること
を要旨としている。SUMMARY OF THE INVENTION The present invention provides an EC material capable of being colored and decolored in an electrochromic display device in which transparent electrodes on which an EC material is formed are arranged so as to face each other and an electrolytic solution is sealed between them. The filmed first transparent electrode and an EC material of the same type as the EC material capable of compensating the coloration / decoloration reaction of the first transparent electrode are formed at a portion corresponding to the negative pattern portion of the first transparent electrode. The gist of the present invention is to have a film-formed second transparent electrode.
【０００６】[0006]
【作用】前記両透明電極に成膜されたＥＣ材パターンの
対向する位置には、第２の透明電極におけるＥＣ材のな
い光透過部分が配置されることから、この光透過部分に
着目すると、着色時は第１透明電極側のＥＣ材パターン
が表示され、消色時には前記光透過部分内が無色に表示
される。Since the light-transmissive portion of the second transparent electrode without the EC material is arranged at a position where the EC material patterns formed on both transparent electrodes face each other, paying attention to this light-transmissive portion, When colored, the EC material pattern on the first transparent electrode side is displayed, and when decolored, the inside of the light transmitting portion is displayed colorless.
【０００７】[0007]
【実施例】図１および図２に、本発明の一実施例を示
す。同図において、１，２は相対向する２枚のガラス等
の透明基板、３，４は前記各透明基板に形成された酸化
錫や酸化インジウム等よりなる透明電極、５は透明電極
３に成膜されたプルシアンブルー（ＰＢ）よりなるＥＣ
膜パターン、６は同じプルシアンブルーを前記透明電極
３のＥＣ膜ネガパターン部に相当する部位に成膜された
ＥＣ膜パターンである。７は前記透明基板１，２を接着
して電解液８を密封するシール材である。上記構成のＥ
Ｃ表示装置において、ＥＣ膜を形成しているプルシアン
ブルー（ＰＢ）は電圧印加により、青色から無色に変化
する。1 and 2 show an embodiment of the present invention. In the figure, 1 and 2 are transparent substrates such as two glass plates facing each other, 3 and 4 are transparent electrodes made of tin oxide or indium oxide formed on the respective transparent substrates, and 5 is a transparent electrode 3. EC made of Prussian blue (PB) filmed
A film pattern 6 is an EC film pattern in which the same Prussian blue is formed in a portion corresponding to the EC film negative pattern portion of the transparent electrode 3. Reference numeral 7 is a sealing material that adheres the transparent substrates 1 and 2 and seals the electrolytic solution 8. E of the above configuration
In the C display device, Prussian blue (PB) forming the EC film changes from blue to colorless by applying a voltage.
【０００８】図２に示した電極にてセルを構成すると、
透明電極３側のＥＣ膜パターン５の対向する位置には、
透明電極４側のＥＣ膜パターン６の光透過部分６ａ（プ
ルシアンブルーの無い部分）が配置される。よって構成
されるセルの光透過部分６ａに着目すると、着色時は青
色の表示を示し、消色時には光透過部分６ａ内が無色の
表示を示す。すなわち、透明電極１側のＥＣ膜パターン
５の着消色を透過型で表示することや、両透明電極へＥ
Ｃ膜パターン５，６を全消去することで、透明電極４の
光透過部分６ａの形をネガ表示することが可能となる。When a cell is constructed with the electrodes shown in FIG.
At the position where the EC film pattern 5 on the transparent electrode 3 side faces,
A light transmitting portion 6a (a portion without Prussian blue) of the EC film pattern 6 on the transparent electrode 4 side is arranged. Focusing on the light-transmitting portion 6a of the cell thus configured, a blue display is shown at the time of coloring, and a colorless display is made inside the light-transmitting portion 6a at the time of erasing. That is, the color of the EC film pattern 5 on the transparent electrode 1 side is displayed in a transmissive type, and E is displayed on both transparent electrodes.
By completely erasing the C film patterns 5 and 6, the shape of the light transmitting portion 6a of the transparent electrode 4 can be negatively displayed.
【０００９】前記構成において、透明電極４に成膜した
ＥＣ膜パターン６の膜厚を透明電極３に成膜したＥＣ膜
パターン５の膜厚より大きくし（２倍もしくは２倍以
上）、表示極ＥＣ材と対向極のＥＣ材との距離を近付け
ると、酸化還元反応のスムーズ化が図れる。In the above structure, the film thickness of the EC film pattern 6 formed on the transparent electrode 4 is made larger (twice or more than twice) than the film thickness of the EC film pattern 5 formed on the transparent electrode 3, and the display electrode If the distance between the EC material and the EC material of the counter electrode is reduced, the redox reaction can be smoothed.
【００１０】また、応答速度を早くし、寿命を長くさせ
るには、対向極である透明電極４側のＥＣ材の方を予め
還元（青色を無色にしておく）しておくことが必要であ
るが、電解液に含まれる不純物等の影響で非常に不安定
となるので、透明電極４に成膜したＥＣ材を、透明電極
３に成膜したＥＣ材の反応電荷量より多い電荷量で予め
還元した後に封止しておくのが好ましい。In order to increase the response speed and prolong the service life, it is necessary to reduce the EC material on the transparent electrode 4 side, which is the opposite electrode, in advance (make the blue color colorless). However, since it becomes very unstable due to the influence of impurities contained in the electrolytic solution, the EC material formed on the transparent electrode 4 is previously charged with a charge amount larger than the reaction charge amount of the EC material formed on the transparent electrode 3. It is preferable to seal after reduction.
【００１１】その場合、前述したように、透明電極４側
のＥＣ材パターン６の膜厚を透明電極３側のＥＣ材パタ
ーン５の膜厚の２倍にすれば、還元可能な電荷量も２倍
になるが、全部還元すると、着色する時、元の色に戻ら
ないため、やや余裕をもたせて１．５倍にしておくのが
好ましい。In this case, as described above, if the film thickness of the EC material pattern 6 on the transparent electrode 4 side is made twice the film thickness of the EC material pattern 5 on the transparent electrode 3 side, the reducible charge amount is also 2. Although it doubles, it is preferable to set it to 1.5 times with some allowance since it does not return to the original color when it is colored when it is completely reduced.
【００１２】[0012]
【発明の効果】以上詳述したように、本発明によれば下
記効果が得られる。 （１）従来の技術である酸化タングステン（ＷＯ3）と
（ＰＢ）の組み合わせで構成される透過型エレクトロク
ロミック表示装置のように、両極で同時発色しないた
め、表示が二重写しにならない。 （２）ＷＯ3型エレクトロクロミック表示装置のＥＣ材
成膜に必要とされていた真空蒸着装置が不要となるた
め、設備コストが少なく、安価なエレクトロクロミック
素子の提供が可能となる。 （３）表示素子のみならず、調光素子への応用も可能で
ある。 （４）ＥＣ材にＰＢを用いるとき、そのＰＢの鮮やかな
青色を生かせる。As described in detail above, according to the present invention, the following effects can be obtained. (1) Unlike the conventional transmissive electrochromic display device composed of a combination of tungsten oxide (WO 3 ) and (PB), the two colors do not develop colors at the same time, so that the display is not duplicated. (2) Since the vacuum vapor deposition device required for the EC material film formation of the WO 3 type electrochromic display device is not required, the facility cost is low and the inexpensive electrochromic device can be provided. (3) Not only a display element but also a light control element can be applied. (4) When PB is used as the EC material, the bright blue color of the PB can be utilized.
【図１】本発明の一実施例を示すエレクトロクロミック
表示装置の断面図である。FIG. 1 is a cross-sectional view of an electrochromic display device showing an embodiment of the present invention.
【図２】対向する透明電極に成膜したＥＣ材パターンの
正面図である。FIG. 2 is a front view of an EC material pattern formed on opposing transparent electrodes.
１，２ 透明基板 ３，４ 透明電極 ５，６ 透明電極に成膜したＥＣ材パターンの正面図 ６ａ 光透過部分 ７ シール材 ８ 電解液 1, 2 transparent substrate 3, 4 transparent electrode 5, 6 front view of EC material pattern formed on transparent electrode 6a light transmitting portion 7 sealing material 8 electrolytic solution
Claims (4)
し、その間に電解液を封入してなるエレクトロクロミッ
ク表示装置において、着消色可能なＥＣ材を成膜した第
１の透明電極と、この第１の透明電極の着消色反応を補
償可能な前記ＥＣ材と同種類のＥＣ材を前記第１の透明
電極のネガパターン部に相当する部位に成膜した第２の
透明電極とを具備していることを特徴とするエレクトロ
クロミック表示装置。1. An electrochromic display device in which transparent electrodes on which an EC material is deposited are arranged to face each other, and an electrolytic solution is sealed between them, and a first transparent electrode on which an EC material capable of being colored and decolored is deposited. A second transparent electrode formed by depositing an EC material of the same type as the EC material capable of compensating for the color fading reaction of the first transparent electrode on a portion corresponding to a negative pattern portion of the first transparent electrode, An electrochromic display device comprising:
求項１に記載のエレクトロクロミック表示装置。2. The electrochromic display device according to claim 1, wherein the EC material is Prussian blue.
膜厚が第１の透明電極に成膜したＥＣ材の膜厚より大で
ある請求項１に記載のエレクトロクロミック表示装置。3. The electrochromic display device according to claim 1, wherein the film thickness of the EC material formed on the second transparent electrode is larger than the film thickness of the EC material formed on the first transparent electrode.
が、第１の透明電極に成膜したＥＣ材の反応電荷量より
多い電荷量で予め還元されたものである請求項１に記載
のエレクトロクロミック表示装置。4. The EC material deposited on the second transparent electrode is reduced in advance by a charge amount larger than the reaction charge amount of the EC material deposited on the first transparent electrode. The electrochromic display device described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5245941A JPH0772514A (en) | 1993-09-06 | 1993-09-06 | Electrochromic display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5245941A JPH0772514A (en) | 1993-09-06 | 1993-09-06 | Electrochromic display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0772514A true JPH0772514A (en) | 1995-03-17 |
Family
ID=17141140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5245941A Pending JPH0772514A (en) | 1993-09-06 | 1993-09-06 | Electrochromic display |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0772514A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007052952A1 (en) * | 2005-11-02 | 2007-05-10 | Lg Chem, Ltd. | An electrochromic device |
| WO2007102656A1 (en) * | 2006-03-06 | 2007-09-13 | Skc Co., Ltd. | Preparation of prussian blue coating film for electrochromic device |
-
1993
- 1993-09-06 JP JP5245941A patent/JPH0772514A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007052952A1 (en) * | 2005-11-02 | 2007-05-10 | Lg Chem, Ltd. | An electrochromic device |
| WO2007102656A1 (en) * | 2006-03-06 | 2007-09-13 | Skc Co., Ltd. | Preparation of prussian blue coating film for electrochromic device |
| US8221829B2 (en) | 2006-03-06 | 2012-07-17 | Skc Co., Ltd. | Preparation of prussian blue coating film for electrochromic device |
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