JPS60120329A - Electrochromic element - Google Patents
Electrochromic elementInfo
- Publication number
- JPS60120329A JPS60120329A JP58227986A JP22798683A JPS60120329A JP S60120329 A JPS60120329 A JP S60120329A JP 58227986 A JP58227986 A JP 58227986A JP 22798683 A JP22798683 A JP 22798683A JP S60120329 A JPS60120329 A JP S60120329A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- electrochromic
- transparent
- electrode
- film
- 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
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect
- G02F1/153—Constructional details
- G02F1/1533—Constructional details structural features not otherwise provided for
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は電気化学的発消色現象すなわちエレクトロクロ
ミック現象を利用したエレクトロクロミック素子に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electrochromic device that utilizes an electrochemical coloring/decoloring phenomenon, that is, an electrochromic phenomenon.
このようなエレクトロクロミック現象を利用する電気化
学的発消色素子すなわちエレクトロクロミック索子は、
例えば、数字表示素子１．ｘ−ｙマトリクスディスプレ
イ、光学シ蕎ツタ、絞り機構等に応用できるもので、そ
の材料で分類すると液体型と固体型に分けられるが、本
発明は特に液体型のエレクトロクロミック素子に関する
ものである。Electrochemically quenched dye molecules, or electrochromic molecules, utilize such electrochromic phenomena.
For example, number display element 1. It can be applied to x-y matrix displays, optical shutters, aperture mechanisms, etc., and can be classified into liquid type and solid type based on the material. The present invention particularly relates to liquid type electrochromic elements.
エレクトロクロミック現象を利用した液体型エレクトロ
クロミック素子の一般的な例を第１図に示す。FIG. 1 shows a general example of a liquid electrochromic element that utilizes electrochromic phenomena.
第１図に示すエレクトロクロミック素子は、透明な基板
１の上に、透明導電体膜よシなる第１の電極２、電解質
液からなる電解質液層３、酸化還元反応で発消色をする
エレクトロクロミック層４、透明導電体膜よシなる第２
の電極５及び上部透明基板６からなる。なお、図中、７
はスペーサ、８は絶縁層、９は電解液封入後に封止する
封口を示す。The electrochromic device shown in FIG. 1 is composed of a transparent substrate 1, a first electrode 2 made of a transparent conductor film, an electrolyte layer 3 made of an electrolyte solution, and an electrochromic device that changes color by redox reaction. chromic layer 4, a second layer consisting of a transparent conductor film
It consists of an electrode 5 and an upper transparent substrate 6. In addition, in the figure, 7
8 indicates a spacer, 8 indicates an insulating layer, and 9 indicates a sealing port that is sealed after filling the electrolyte.
上記の構造において、基板および電極の組合せ１．２お
よび５，６はいずれも透明で、透明型の素子を構成して
いるが、両方とも透明としなくてもよく、少くとも一方
の基板と電極の組合せが透明ならばよい。透明基板とし
てはガラス板、プラスチック板等の透明な板が使用され
、透明導電膜としては、ＩＴＯＨＸ（酸化インジウム”
２０５ ＋４’ Ｋ 酸化錫Ｓ ｎＯ２を５係前後含む
）やネサ膜等が用いられる。In the above structure, the substrate and electrode combinations 1.2, 5, and 6 are all transparent and constitute a transparent element, but it is not necessary for both to be transparent, and at least one of the substrates and the electrode It is sufficient if the combination is transparent. A transparent plate such as a glass plate or a plastic plate is used as the transparent substrate, and the transparent conductive film is made of ITOHX (indium oxide).
205 +4' K tin oxide (containing about 5% nO2), Nesa film, etc. are used.
第１図に示す様々液体型エレクトロクロミック素子にお
いて、エレクトロクロミック層４としては、従来、三酸
化タングステン（ＷＯ３）を使用するのが普通である。In the various liquid-type electrochromic devices shown in FIG. 1, tungsten trioxide (WO3) is conventionally used as the electrochromic layer 4.
しかし、この三酸化タングステン（ＷＯ３）は寿命が短
いと言う欠点がある。However, this tungsten trioxide (WO3) has the drawback of having a short lifespan.
本発明の目的は、このような従来の液体型エレクトロク
ロミック素子の欠点を補正し、寿命を著るしく高めたエ
レクトロクロミック素子を提供することにある。An object of the present invention is to provide an electrochromic device that corrects the drawbacks of the conventional liquid electrochromic device and has a significantly increased lifespan.
本発明によるエレクトロクロミック素子は、導電体膜よ
り成る第１電極と、陽極側発色層であるエレクトロクロ
ミック層と、電解液からなる電解質層と、導電体膜よシ
々る第２電極から構成され、或いは上記の電解質層と第
２電極の間にさらに陰極側発色層である第２のエレクト
ロクロミック層を積層してなるエレクトロクロミック素
子において、陽極側発色層であるエレクトロクロミック
層と水酸化コバル） Ｃｏ（ＯＨ）２としたことを特徴
とするものである。The electrochromic device according to the present invention is composed of a first electrode made of a conductive film, an electrochromic layer which is a coloring layer on the anode side, an electrolyte layer made of an electrolytic solution, and a second electrode made of a conductive film. Alternatively, in an electrochromic element in which a second electrochromic layer, which is a coloring layer on the cathode side, is further laminated between the electrolyte layer and the second electrode, the electrochromic layer, which is the coloring layer on the anode side, and cobal hydroxide) It is characterized by being made of Co(OH)2.
第２図は本発明によるエレクトロクロミック素子の一実
施態様を示す。図中、１１は基板、１２は導電体膜より
成る第１電極、１３は陽極側発色層であるエレクトロク
ロミック層、１４は電解液から成る電解質液層、１５は
導電体膜から々る第２の電極を示す。第２電極１５の上
には、さらに透明な基板１６が積層されている。図中、
１７はスペーサ、１８は絶縁膜、１９は封口を示す。FIG. 2 shows one embodiment of an electrochromic device according to the invention. In the figure, 11 is a substrate, 12 is a first electrode made of a conductive film, 13 is an electrochromic layer which is a coloring layer on the anode side, 14 is an electrolyte liquid layer made of an electrolytic solution, and 15 is a second electrode made of a conductive film. The electrodes are shown. A transparent substrate 16 is further laminated on the second electrode 15. In the figure,
17 is a spacer, 18 is an insulating film, and 19 is a sealing hole.
上記の構造において基板および電極の組合せ１１゜１２
と１５．１６は少くとも一方が透明ならばよく、両方透
明であると、透明型素子が形成される。In the above structure, the combination of substrate and electrode is 11°12
It is sufficient that at least one of the elements 15 and 16 is transparent, and if both are transparent, a transparent element is formed.
透明な基板としてはガラス板、プラスチック板、アクリ
ル板等が使用され、透明電極としてはＩＴＯ膜、ネサ膜
等が使用される。A glass plate, a plastic plate, an acrylic plate, etc. are used as the transparent substrate, and an ITO film, a Nesa film, etc. are used as the transparent electrode.
エレクトロクロミック層１３は水酸化コノぐルトＣａ
（ＯＨ）２より成り、電解質層１４には例えば０、 Ｉ
Ｎ ＮａＳＯ４溶液が使用される。The electrochromic layer 13 is made of hydroxide conogluto Ca.
(OH)2, and the electrolyte layer 14 contains, for example, 0, I
N NaSO4 solution is used.
第３図は本発明によるエレクトロクロミック素子の他の
実施態様を示す。これは第２図に示すものに、さらに、
電解質層１４と第２電極１５０間に、陰極側発色層であ
る第２のエレクトロクロミック層２０を積層したもので
、その他の点では第２図に示すものと実質的に同様であ
る。図中、２１は絶縁膜を示す。FIG. 3 shows another embodiment of the electrochromic device according to the invention. This is in addition to what is shown in Figure 2.
A second electrochromic layer 20, which is a coloring layer on the cathode side, is laminated between the electrolyte layer 14 and the second electrode 150, and is substantially the same as that shown in FIG. 2 in other respects. In the figure, 21 indicates an insulating film.
上述のように、本発明は従来の液体型エレクトロクロミ
ック素子に用いられている三酸化タングステン（ＷＯ３
）の寿命が短いという欠点を補うために、三酸化タング
ステン（ＷＯ，）より成るエレクトロクロミック層の代
シに、水酸化コパル） ｃｏ （ＯＨ）２の膜よ構成る
エレクトロクロミック層を用いるもので、これにより、
素子の寿命を約１ケタ上げることができた。さらに、第
３図に示すように第２のエレクトロクロミック層をもつ
構造とすることによって、駆動電圧を低くでき、濃度、
応答速度、寿命を第１図に示す素子に比べ、大巾に改善
できた。As mentioned above, the present invention utilizes tungsten trioxide (WO3), which is used in conventional liquid electrochromic devices.
) In order to compensate for the shortcoming of the short lifetime of tungsten trioxide (WO, ), an electrochromic layer composed of a film of copal hydroxide (copal) (OH)2 is used instead of an electrochromic layer composed of tungsten trioxide (WO, ). , which results in
We were able to increase the device life by about one order of magnitude. Furthermore, by adopting a structure with a second electrochromic layer as shown in FIG. 3, the driving voltage can be lowered, and the concentration and
The response speed and lifespan were significantly improved compared to the element shown in Figure 1.
（５） 以下に実施例を示す。(5) Examples are shown below.
実施例１゜
ガラスの透明な基板上に、膜厚２０００ＸのＩＴＯ膜よ
構成る第１の透明電極を形成し、表示部以外に５ｔＯ２
層の絶縁膜を積層した。絶縁膜の膜厚は１０００Ｘで、
ｉｊ ター ＝ ７ ｆは、ｖ シス） ＡＺ−１１４
８を用いた。表示部に、マスクを用い、反応性高周波イ
オンブレーティング方法を用い、Ｃｏ（ＯＨ）ｚ膜よ構
成るエレクトロクロミック層を形成した。その条件は、
４．ＯＸ １０ ’Ｔｏｒｒ ’ｌでＨ２０蒸気を導入
し、高周波パワー３００Ｗ、蒸着速度０．３ｉ／ｓｅｅ
で、膜厚１０００ＸのＣｏ （０Ｈ）２膜を形成するも
のとした。対向電極側にも、透明基板および透明電極を
用い、厚さ４混のスペーサを用いて、セルを作製した。Example 1 A first transparent electrode made of an ITO film with a film thickness of 2000X was formed on a transparent glass substrate, and 5tO2 was applied to areas other than the display area.
Laminated insulating films. The thickness of the insulating film is 1000X,
ij tar = 7 f is v cis) AZ-114
8 was used. An electrochromic layer consisting of a Co(OH)z film was formed on the display area using a mask and using a reactive high frequency ion blating method. The conditions are:
4. Introducing H20 vapor at OX 10'Torr'l, high frequency power 300W, evaporation rate 0.3i/see
Thus, a Co (0H) 2 film with a thickness of 1000× was formed. A cell was also fabricated on the counter electrode side using a transparent substrate, a transparent electrode, and a spacer with a thickness of 4 mm.
このセルの中に、電解液として０．ｌＮ−ＮａＳＯ４溶
液を注入し、常温硬化のエポキシを用いて封口した。In this cell, there is 0.0% as an electrolyte. A 1N-NaSO4 solution was injected, and the tube was sealed using epoxy that cured at room temperature.
この様にして製作したエレクトロクロミック素子を１．
５ｖで駆動したところ、着色濃度がΔＯ，Ｄで０．３に
変化するのに、５００ｍ５ｅｃであった。ま（６）
た、このときの繰返し寿命は２．０Ｘ１０５回であった
。The electrochromic device produced in this way is 1.
When driven at 5V, it took 500 m5ec to change the coloring density to 0.3 in ΔO,D. (6) Moreover, the repetition life at this time was 2.0×105 times.
実施例２゜
ガラスの透明な基板上に、膜厚２０００ＸのＩＴＯ膜よ
り成る透明電極を形成し、表示部以外に５ＩＯ２層の絶
縁膜を積層した。絶縁膜の膜厚は１０００Ｘで、パター
ニングは、レジス）ＡＺ−１１４８を用いた。Example 2 A transparent electrode made of an ITO film with a thickness of 2000× was formed on a transparent glass substrate, and an insulating film of 5IO2 layers was laminated on the area other than the display area. The thickness of the insulating film was 1000×, and patterning was performed using resist AZ-1148.
この様な基板を２枚作製し、表示部に、１枚には陽極側
発色層のエレクトロクロミック層としてＣｏ （ＯＨ）
２膜を形成し、他の１枚には陰極側発色層のエレクトロ
クロミック層としてＷＯ５膜を形成した。Two such substrates were made, one for the display area and one for the electrochromic layer of the coloring layer on the anode side.
Two films were formed, and a WO5 film was formed on the other film as an electrochromic layer of the coloring layer on the cathode side.
Ｃｏ （ＯＨ）２膜の形成には、反応性高周波イオンブ
レーティング方法を用いた。その条件は、４．ＯＸ １
０−’Ｔｏ ｒ ｒまで、Ｈ２０蒸気を導入し、高周波
ノｊワー３００Ｗ。A reactive high frequency ion blating method was used to form the Co (OH) 2 film. The conditions are 4. OX1
Introduce H20 steam to 0-'Torr and turn on high frequency power to 300W.
蒸着速度０．３ Ｘ／ｓｅａで膜厚１０００ＸのＣｏ
（ＯＨ）２膜を形成するものとした。Co with a film thickness of 1000X at a deposition rate of 0.3X/sea
A (OH)2 film was formed.
ＷＯ３膜の形成にはＥＢ蒸着法を用いた。その条件は、
蒸着速度１０ Ｘ／ｓｅｅで、膜厚４０００Ｘを形成す
るものであった。The EB evaporation method was used to form the WO3 film. The conditions are
A film thickness of 4000X was formed at a deposition rate of 10X/see.
これらの基板を、厚さ４躯のスペーサを用いて、セルを
作製し、このセルの中に、電解液としてＱ、 Ｉ Ｎ−
ＮａＳＯ４溶液を注入し、常温硬化のエポキシを用いて
封口した。A cell was prepared using these substrates using a spacer with a thickness of 4, and in this cell Q, I N- were placed as electrolytes.
A NaSO4 solution was injected, and the seal was sealed using epoxy that cured at room temperature.
この様にして製作したエレクトロクロミック素子を１．
５■で駆動したところ、着色濃度がΔＯ・Ｄで０．３に
変化するのに、３００ｍ５ｅｃであった０また、このと
きの繰返し寿命は１．０Ｘ１０ 回であった。The electrochromic device produced in this way is 1.
When driven at 5.5 times, the coloring density changed to 0.3 in ΔO·D, but the cycle life was 300 m5ec.
第１図は液体型エレクトロクロミック素子の一般的な例
を示す断面図、第２図および第３図は、それぞれ、本発
明に係るエレクトロクロミック素子の実施態様を示す。
１・・・基板、 ２・・・第１電極、
３・・・電解質液層、 ４・・・エレクトロクロミック
層、５・・・第２電極、 ６・・・基板、
７・・・スペーサ、 ８・・・絶縁層、９・・・封口、
１１・・・基板、
１２・・・第１電極、
１３・・・エレクトロクロミック層、
１４・・・電解質液層、 １５・・・第２電極、１６・
・・基板、 １７・・・スペーサ、１８・・・絶縁膜、
１９・・・封口、２０・・・エレクトロクロミック層
、
２１・・・絶縁膜。
（９）FIG. 1 is a sectional view showing a general example of a liquid electrochromic device, and FIGS. 2 and 3 each show an embodiment of the electrochromic device according to the present invention. DESCRIPTION OF SYMBOLS 1... Substrate, 2... First electrode, 3... Electrolyte liquid layer, 4... Electrochromic layer, 5... Second electrode, 6... Substrate, 7... Spacer, 8... Insulating layer, 9... Sealing,
DESCRIPTION OF SYMBOLS 11... Substrate, 12... First electrode, 13... Electrochromic layer, 14... Electrolyte liquid layer, 15... Second electrode, 16...
...Substrate, 17...Spacer, 18...Insulating film,
19... Sealing, 20... Electrochromic layer, 21... Insulating film. (9)
Claims (1)
クトロクロミック層と、電解液からなる電解質層と、導
電体膜よシなる第２電極から構成され、或いは上記の電
解質層と第２電極の間にさらに陰極側発色層である第２
のエレクトロクロミック層を積層してなるエレクトロク
ロミック素子において、陽極側発色層であるエレクトロ
クロミック層と水酸化コパルＦ Ｃｏ（ＯＨ）２とした
ことを特徴とするエレクトロクロミック素子。It is composed of a first electrode made of a conductive film, an electrochromic layer which is an anode-side coloring layer, an electrolyte layer made of an electrolytic solution, and a second electrode made of a conductive film, or the electrolyte layer and the second electrode are made of a conductive film. Further between the electrodes is a second coloring layer on the cathode side.
An electrochromic device comprising laminated electrochromic layers, characterized in that the electrochromic layer serving as an anode-side coloring layer is made of copal hydroxide F Co(OH)2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58227986A JPS60120329A (en) | 1983-12-02 | 1983-12-02 | Electrochromic element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58227986A JPS60120329A (en) | 1983-12-02 | 1983-12-02 | Electrochromic element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60120329A true JPS60120329A (en) | 1985-06-27 |
Family
ID=16869367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58227986A Pending JPS60120329A (en) | 1983-12-02 | 1983-12-02 | Electrochromic element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60120329A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007011225A (en) * | 2005-07-04 | 2007-01-18 | Hitachi Displays Ltd | Display device and manufacturing method thereof |
-
1983
- 1983-12-02 JP JP58227986A patent/JPS60120329A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007011225A (en) * | 2005-07-04 | 2007-01-18 | Hitachi Displays Ltd | Display device and manufacturing method thereof |
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