JPH0420936A - Electrochromic display element - Google Patents
Electrochromic display elementInfo
- Publication number
- JPH0420936A JPH0420936A JP12419090A JP12419090A JPH0420936A JP H0420936 A JPH0420936 A JP H0420936A JP 12419090 A JP12419090 A JP 12419090A JP 12419090 A JP12419090 A JP 12419090A JP H0420936 A JPH0420936 A JP H0420936A
- Authority
- JP
- Japan
- Prior art keywords
- film
- layer
- flexible
- moisture
- ecd
- 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
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- 239000004408 titanium dioxide Substances 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- MIZLGWKEZAPEFJ-UHFFFAOYSA-N 1,1,2-trifluoroethene Chemical group FC=C(F)F MIZLGWKEZAPEFJ-UHFFFAOYSA-N 0.000 description 1
- OGHKVCJFHNKOEC-UHFFFAOYSA-N 1-methoxyethane-1,2-diol;2-methylprop-2-enoic acid Chemical compound COC(O)CO.CC(=C)C(O)=O OGHKVCJFHNKOEC-UHFFFAOYSA-N 0.000 description 1
- BJINVQNEBGOMCR-UHFFFAOYSA-N 2-(2-methoxyethoxy)ethyl acetate Chemical compound COCCOCCOC(C)=O BJINVQNEBGOMCR-UHFFFAOYSA-N 0.000 description 1
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- RIWRBSMFKVOJMN-UHFFFAOYSA-N 2-methyl-1-phenylpropan-2-ol Chemical compound CC(C)(O)CC1=CC=CC=C1 RIWRBSMFKVOJMN-UHFFFAOYSA-N 0.000 description 1
- JZVUAOCDNFNSGQ-UHFFFAOYSA-N 7-methoxy-2-phenyl-1h-quinolin-4-one Chemical compound N=1C2=CC(OC)=CC=C2C(O)=CC=1C1=CC=CC=C1 JZVUAOCDNFNSGQ-UHFFFAOYSA-N 0.000 description 1
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- 229920002284 Cellulose triacetate Polymers 0.000 description 1
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- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 1
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- JHWNWJKBPDFINM-UHFFFAOYSA-N Laurolactam Chemical compound O=C1CCCCCCCCCCCN1 JHWNWJKBPDFINM-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
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- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 1
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- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
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- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 description 1
- MPIAGWXWVAHQBB-UHFFFAOYSA-N [3-prop-2-enoyloxy-2-[[3-prop-2-enoyloxy-2,2-bis(prop-2-enoyloxymethyl)propoxy]methyl]-2-(prop-2-enoyloxymethyl)propyl] prop-2-enoate Chemical compound C=CC(=O)OCC(COC(=O)C=C)(COC(=O)C=C)COCC(COC(=O)C=C)(COC(=O)C=C)COC(=O)C=C MPIAGWXWVAHQBB-UHFFFAOYSA-N 0.000 description 1
- AZWHFTKIBIQKCA-UHFFFAOYSA-N [Sn+2]=O.[O-2].[In+3] Chemical compound [Sn+2]=O.[O-2].[In+3] AZWHFTKIBIQKCA-UHFFFAOYSA-N 0.000 description 1
- QACZTJJABFVRAS-UHFFFAOYSA-N acetic acid;2-butoxyethanol Chemical compound CC(O)=O.CCCCOCCO QACZTJJABFVRAS-UHFFFAOYSA-N 0.000 description 1
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- AQTIRDJOWSATJB-UHFFFAOYSA-K antimonic acid Chemical compound O[Sb](O)(O)=O AQTIRDJOWSATJB-UHFFFAOYSA-K 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 description 1
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- JZMPIUODFXBXSC-UHFFFAOYSA-N ethyl carbamate;prop-2-enoic acid Chemical compound OC(=O)C=C.OC(=O)C=C.CCOC(N)=O JZMPIUODFXBXSC-UHFFFAOYSA-N 0.000 description 1
- STVZJERGLQHEKB-UHFFFAOYSA-N ethylene glycol dimethacrylate Chemical compound CC(=C)C(=O)OCCOC(=O)C(C)=C STVZJERGLQHEKB-UHFFFAOYSA-N 0.000 description 1
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
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- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
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- ZJZXSOKJEJFHCP-UHFFFAOYSA-M lithium;thiocyanate Chemical compound [Li+].[S-]C#N ZJZXSOKJEJFHCP-UHFFFAOYSA-M 0.000 description 1
- MCVFFRWZNYZUIJ-UHFFFAOYSA-M lithium;trifluoromethanesulfonate Chemical compound [Li+].[O-]S(=O)(=O)C(F)(F)F MCVFFRWZNYZUIJ-UHFFFAOYSA-M 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
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- 150000002739 metals Chemical class 0.000 description 1
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- 235000005985 organic acids Nutrition 0.000 description 1
- PQQKPALAQIIWST-UHFFFAOYSA-N oxomolybdenum Chemical compound [Mo]=O PQQKPALAQIIWST-UHFFFAOYSA-N 0.000 description 1
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- 229910052763 palladium Inorganic materials 0.000 description 1
- 238000005240 physical vapour deposition Methods 0.000 description 1
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- HNJBEVLQSNELDL-UHFFFAOYSA-N pyrrolidin-2-one Chemical compound O=C1CCCN1 HNJBEVLQSNELDL-UHFFFAOYSA-N 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
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- 229920003002 synthetic resin Polymers 0.000 description 1
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- 238000012719 thermal polymerization Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- LLZRNZOLAXHGLL-UHFFFAOYSA-J titanic acid Chemical compound O[Ti](O)(O)O LLZRNZOLAXHGLL-UHFFFAOYSA-J 0.000 description 1
- 150000003623 transition metal compounds Chemical class 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、可撓性を有する新規なエレクトロクロミック
デイスプレィ（以下、ＥＣＤともいう）素子に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a novel flexible electrochromic display (hereinafter also referred to as ECD) element.
詳しくは、駆動寿命が長く、しかも信転性が高い上記Ｅ
ＣＤ素子を提供するものである。For more details, please refer to the above E, which has a long drive life and high reliability.
It provides a CD element.
ＥＣＤ素子は、一般に透明導電層、エレクトロクロミッ
ク物質層（以下、ＥＣ層ともいう）、電解質層及び対向
電極層を積層して構成され、該積層体間に電極端子より
電圧を印加することにより化学反応を起こし、ＥＣ層を
発色又は消色させて表示を行うものである。そのため、
上記ＥＣＤ素子は、発色状態を維持するためのエネルギ
ーを特に必要とせず、大面積の表示を経済的に行うこと
が可能である。ECD elements are generally constructed by laminating a transparent conductive layer, an electrochromic material layer (hereinafter also referred to as an EC layer), an electrolyte layer, and a counter electrode layer. Display is performed by causing a reaction and causing the EC layer to develop or discolor. Therefore,
The above-mentioned ECD element does not particularly require energy to maintain a coloring state, and can economically display a large area.
一方、上記ＥＣＤ素子の取扱い易さを改善するため、Ｅ
ＣＤ素子を構成する前記積層体を固定する基板として、
従来より使用されているガラス板に代えて、ＰＥＴ（ポ
リエチレンテレフタレート）フィルム等の可撓性フィル
ムを使用することにより、ＥＣＤ素子に可撓性を与える
試みもされつつある。On the other hand, in order to improve the ease of handling the ECD element,
As a substrate for fixing the laminate forming the CD element,
Attempts are also being made to provide flexibility to ECD elements by using flexible films such as PET (polyethylene terephthalate) films in place of the conventionally used glass plates.
しかしながら、上記可撓性を有するＥＣＤ素子は、実用
化において、所期の駆動寿命を達成することができず、
短期間で表示能力が低下するという問題を有する。However, the above-mentioned flexible ECD element cannot achieve the expected driving life when put into practical use.
The problem is that the display ability deteriorates in a short period of time.
本発明者等は、上記問題を解決すべく研究を重ねた結果
、以外にも前記可撓性を有するＥＣＤ素子においては、
可撓性フィルムを介して侵入する微量の水分がＥＣＤ素
子の寿命に極めて大きな影響を与えるという知見を得た
。そして、更に検討を重ねた結果、ＥＣＤ素子の表示部
を特定の透湿度を有する可撓性フィルムにより被覆する
ことにより、ＥＣＤ素子の寿命を著しく向上し得ること
を見い出し、本発明を完成するに至った。As a result of repeated research to solve the above-mentioned problems, the inventors of the present invention have found that, in addition to the above-mentioned flexible ECD element,
We have found that a small amount of moisture that enters through a flexible film has an extremely large effect on the lifespan of an ECD element. As a result of further studies, it was discovered that the life of the ECD element could be significantly improved by covering the display part of the ECD element with a flexible film having a specific moisture permeability, and this led to the completion of the present invention. It's arrived.
本発明は、透明導電層、エレクトロクロミック物質層、
電解質層及び対向電極層を積層してなる表示部の少な（
とも表面及び裏面を透湿度が１．５ｇ ／ ｍ Ｚ・２
４時間以下の可撓性フィルムによって被覆したことを特
徴とするエレクトロクロミックデイスプレィ素子である
。The present invention provides a transparent conductive layer, an electrochromic material layer,
A small display area formed by laminating an electrolyte layer and a counter electrode layer (
Moisture permeability on both front and back surfaces is 1.5g/m Z・2
An electrochromic display element characterized in that it is coated with a flexible film that lasts for 4 hours or less.
尚、本発明において、フィルムの透湿度は日本工業規格
（ＪＩＳＺＯ２０８）に準じて、９０％の相対湿度差で
厚さ０．ＩＩＬ■、面積１．２の試料を２４時間に通過
する水蒸気のｇ数で示した値である。In addition, in the present invention, the moisture permeability of the film is 0.00% at a relative humidity difference of 90% in accordance with the Japanese Industrial Standards (JISZO208). IIL■ is a value expressed in grams of water vapor that passes through a sample with an area of 1.2 in 24 hours.
以下、本発明を添付図面に従って詳細に説明するが本発
明はこれに限定されるものではない。第１図は、本発明
０ＥＣＤ素子の代表的な態様を示す断面図である。Hereinafter, the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. FIG. 1 is a sectional view showing a typical embodiment of the 0ECD device of the present invention.
本発明において、ＥＣＤ素子の表示部は透明導電層２、
ＥＣ層３、電解質層４及び対向電極層５を積層した積層
体より基本的に構成される。In the present invention, the display part of the ECD element includes a transparent conductive layer 2,
It is basically composed of a laminate in which an EC layer 3, an electrolyte layer 4, and a counter electrode layer 5 are laminated.
上記の各層は特に制限されず公知の物質が使用出来るが
一般に好適に使用されるものを例示すれば次の通りであ
る。The above-mentioned layers are not particularly limited and known materials can be used, but the following are examples of materials that are generally preferably used.
透明導電層２としては、一般に、酸化インジウム−酸化
スズ（以下ＩＴＯと略称する）、酸化スズ、酸化亜鉛、
酸化チタン等の酸化物半導体膜；金、銀等の薄膜等が使
用される。前記透明導電層は、スパッタリング、真空蒸
着、イオンブレーティング、スプレー法、ゾルーゲン法
、ＣＶＤ法等の公知の方法によって形成する方法が好適
に採用できる。The transparent conductive layer 2 is generally made of indium oxide-tin oxide (hereinafter abbreviated as ITO), tin oxide, zinc oxide,
An oxide semiconductor film such as titanium oxide; a thin film of gold, silver, etc. is used. The transparent conductive layer can be formed by a known method such as sputtering, vacuum deposition, ion blating, spray method, Solgen method, or CVD method.
またＥＣ層３は、ＥＣ物質を含む層であればよい、ＥＣ
物質としては、例えば無定形酸化タングステンが最も代
表的であるが、その他にも、有機色素、金属錯体、遷移
金属化合物などが適宜採用される。該ＥＣ層の形成方法
としては、真空蒸着、スパッタリング、イオンブレーテ
ィング、プラズマＣＶＤ等の公知の方法が採用できる。Further, the EC layer 3 may be any layer containing an EC substance;
The most typical material is, for example, amorphous tungsten oxide, but organic dyes, metal complexes, transition metal compounds, and the like may also be used as appropriate. As a method for forming the EC layer, known methods such as vacuum evaporation, sputtering, ion blasting, and plasma CVD can be employed.
更にまた電解質層４はイオン伝導が可能であるものであ
れば特に制限なく使用出来る。一般には粉末状固体電解
質を高分子体に結合剤としてペースト化し、後に効果さ
せたもの；アルカリ金属塩を高分子体でペースト化し後
に硬化させたもの；固体電解質の薄膜で形成したもの等
が好適に使用される。該固体電解質は一般にチタン酸、
スズ酸、アンチモン酸、ジルコニウム酸、ニオブ酸、タ
ンタル酸等の固体酸類が、また結合剤としての高分子体
は一般にアクリル樹脂、塩化ビニル樹脂、エポキシ樹脂
、メラミン樹脂、アルキッド樹脂、ポリアルキレンオキ
サイド、ポリエチレンイミン、ポリホスファゼン化合物
等を単独で又は混合して用いられる。またペースト化す
るために必要に応じて使用される溶媒は一般に酢酸エチ
レングリコール−ｎ−ブチルエーテル、ジメトキシエタ
ン、ジエチレングリコールモノメチルエーテルアセテー
ト、ジエチレングリコールモツプチルエーテルアセテー
ト、Ｎ−メチルピロリドン、２−ピロリドン、テトラハ
イドロフラン、プロピレンカーボネート、ジメチネホル
ムアミド、ジメチルスルホキシド等がそれぞれ好適に使
用される。また前記アルカリ金属塩は有機酸のナトリウ
ム、カリウム、リチウム等のアルカリ金属塩が好適に使
用され、就中リチウム塩が好適である。好適に使用され
るものを具体的に例示すると、過塩素酸リチウム、テト
ラフロロホウ酸リチウム、ヘキサフロロリン酸リチウム
、トリフロロ酢酸リチウム、トリフロロメタンスルホン
酸リチウム、チオシアン酸リチウム等である。Furthermore, the electrolyte layer 4 can be used without any particular restriction as long as it is capable of ion conduction. In general, those made by pasting a powdered solid electrolyte onto a polymer as a binder and then applying the effect; those made by making an alkali metal salt into a paste with a polymer and then curing it; those formed from a thin film of solid electrolyte are suitable. used for. The solid electrolyte is generally titanic acid,
Solid acids such as stannic acid, antimonic acid, zirconic acid, niobic acid, and tantalic acid are used, and polymers used as binders are generally acrylic resin, vinyl chloride resin, epoxy resin, melamine resin, alkyd resin, polyalkylene oxide, Polyethyleneimine, polyphosphazene compounds, etc. can be used alone or in combination. Solvents used as necessary for making a paste are generally acetic acid ethylene glycol n-butyl ether, dimethoxyethane, diethylene glycol monomethyl ether acetate, diethylene glycol motubutyl ether acetate, N-methylpyrrolidone, 2-pyrrolidone, and tetrahydrofuran. , propylene carbonate, dimethineformamide, dimethyl sulfoxide and the like are preferably used. As the alkali metal salt, alkali metal salts of organic acids such as sodium, potassium, and lithium are preferably used, and lithium salts are particularly preferred. Specific examples of those preferably used include lithium perchlorate, lithium tetrafluoroborate, lithium hexafluorophosphate, lithium trifluoroacetate, lithium trifluoromethanesulfonate, and lithium thiocyanate.
上記電解質層の形成方法は対象とする電解質層の種類に
応じて適宜採用すればよいが、一般にはスピンナー法；
スクリーン印刷法；スパッタリング、真空蒸着、ＣＶＤ
等の物理蒸着法等を採用すればよい。The method for forming the electrolyte layer described above may be appropriately adopted depending on the type of the target electrolyte layer, but generally the spinner method;
Screen printing method; sputtering, vacuum deposition, CVD
A physical vapor deposition method such as the above may be used.
更にまた本発明における対向電極層５は特に限定されず
、公知のものが使用しうる。一般には結合剤の存在下又
は不存在下に酸化還元物質、導電性粉末を混合して使用
すればよい。該結合剤は前記高分子体が好適に使用され
る。また該酸化還元物質としては、酸化タングステン、
酸化モリブデン、酸化チタン等の酸化物が一般的である
。更にまた該導電性粉末としては、酸化スズ、ＩＴＯ等
の金属酸化物導電性粉末及びカーボン、金属等の導電性
粉末が用いられる。Furthermore, the counter electrode layer 5 in the present invention is not particularly limited, and known ones can be used. Generally, a redox substance and a conductive powder may be mixed together in the presence or absence of a binder. The above-mentioned polymer is preferably used as the binder. Further, as the redox substance, tungsten oxide,
Oxides such as molybdenum oxide and titanium oxide are common. Further, as the conductive powder, metal oxide conductive powder such as tin oxide and ITO, and conductive powder of carbon, metal, etc. are used.
本発明において、上記した各層によって構成される表示
部は、所望のパターンを表示するために、透明導電層２
及び／又は対向電極層５、並びに８０層３及び電解質層
４よりなる積層体を、上記パターンに応じた適当な形状
を有するセグメントに分割することが好ましい。上記積
層体の分割は、該積層体間に絶縁体を介在させることに
より行うことができる。かかる絶縁体は特に限定されず
公知のものが使用できる。好適に使用できる代表的なも
のを例示すれば、光硬化型もしくは架橋重合型樹脂や熱
硬化型樹脂が使用できる。更に具体的には例えば０Ｆ−
１０１０（電気化学工業（製）製）、ＦＯＲ−８０（■
アサヒ化学研究所）、９２７−１０Ｅ（ブレースジャパ
ン■製）（以上いずれも商品名）などが好適である。In the present invention, in order to display a desired pattern, the display section constituted by the above-mentioned layers includes a transparent conductive layer 2
And/or it is preferable that the counter electrode layer 5 and the laminate consisting of the 80 layers 3 and the electrolyte layer 4 be divided into segments having an appropriate shape according to the above pattern. The laminate can be divided by interposing an insulator between the laminates. Such an insulator is not particularly limited, and any known insulator can be used. Typical examples of resins that can be suitably used include photocurable resins, crosslinked polymer resins, and thermosetting resins. More specifically, for example, 0F-
1010 (manufactured by Denki Kagaku Kogyo), FOR-80 (■
Asahi Chemical Research Institute), 927-10E (manufactured by Brace Japan ■) (all of the above are trade names), etc. are suitable.
また、本発明において、透明導電層２及び対向電極層６
を、夫々導体を介して電極端子１０に接続してＥＣＤ素
子を構成すればよい０例えば、８０層３、電解質層４及
び対向電極層５よりなる積層体を絶縁体７により任意形
状のセグメントに分割した場合、表示部の全体に連続し
て存在する透明導電層２は導電体９を介して電極端子１
０に、また、各分割された対向電極層５は集電体６、或
いは配絶パターン及び導電体９を介して電極端子１０に
夫々接続すればよい、上記導電体は特に限定されず電気
的な導通ができるものであれば如何なるものであっても
よい。一般に好適に使用されるのは導電性ペーストをス
クリーン印刷などでパターン化し、その後硬化して使用
する態様である。Further, in the present invention, the transparent conductive layer 2 and the counter electrode layer 6
For example, a laminate consisting of 80 layers 3, an electrolyte layer 4, and a counter electrode layer 5 may be formed into segments of arbitrary shape using an insulator 7. When divided, the transparent conductive layer 2 that exists continuously over the entire display area is connected to the electrode terminal 1 via the conductor 9.
0, and each divided counter electrode layer 5 may be connected to the electrode terminal 10 through the current collector 6 or the distribution pattern and the conductor 9. The conductor is not particularly limited and may be electrically Any material may be used as long as it can provide good electrical conduction. Generally, it is preferable to pattern the conductive paste by screen printing or the like, and then harden it before use.
該導電性ペーストは公知のものが特に限定されず使用出
来るが、一般には、グラファイト、カーボン、パラジウ
ム、銀等の導電性粉末を高分子体よりなる前記結合剤と
ち前記溶媒の存在下又は不存在下に、アセトフェノン、
ベンゾフェノン、２−クロロチオキサントン、アリルケ
トン化合物、過酸化ベンゾイル、アゾビスイソブチルニ
トリル等の光又は熱−重合開始剤と混合して調整したも
のが好適に使用できる。Any known conductive paste can be used without particular limitation, but in general, conductive powder such as graphite, carbon, palladium, silver, etc. is mixed with the binder made of a polymer in the presence or absence of the solvent. In the presence of acetophenone,
Those prepared by mixing with a light or thermal polymerization initiator such as benzophenone, 2-chlorothioxanthone, allyl ketone compound, benzoyl peroxide, and azobisisobutylnitrile can be suitably used.
更に、本発明において、上記表示部を安定に保持するた
めに、該表示部の透明導電層２側に可撓性フィルム１を
積層することが好ましい、上記可撓性フィルムは、表示
部との熱膨張率の差が小さく、且つ透明であるものが好
適に使用される。具体的には、ポリエチレンテレフタレ
ートフィルム、ポリエーテルサルホンフィルム、ポリイ
ミドフィルム、ポリカーボネート樹脂、芳香族ポリエス
テルフィルム等の合成樹脂製フィルム等が挙げられる。Furthermore, in the present invention, in order to stably hold the display section, it is preferable to laminate the flexible film 1 on the transparent conductive layer 2 side of the display section. It is preferable to use a material that has a small difference in thermal expansion coefficient and is transparent. Specifically, synthetic resin films such as polyethylene terephthalate film, polyether sulfone film, polyimide film, polycarbonate resin, and aromatic polyester film may be mentioned.
一方、前記表示部の対向電極層５側には、前記した絶縁
体よりなるオーバーコート層８を設けて表示部と電極端
子１０との接続部を保護することが好ましい。On the other hand, it is preferable to provide an overcoat layer 8 made of the above-mentioned insulator on the counter electrode layer 5 side of the display section to protect the connecting portion between the display section and the electrode terminal 10.
本発明において、特に重要な要件は、透明導電層、ＥＣ
層、電解質層及び対向電極層を積層して構成される前記
表示部の少なくとも表面及び裏面を透湿度が１．５ ｇ
／−”・２４時間以下、好ましくは０．５ ｇ ７ｍ
”・２４時間以下の可撓性フィルム（以下、可撓性防湿
フィルムともいう）１１゜１２によって被覆したことに
ある。可撓性フィルムを基板として用いた可撓性を有す
るＥＣＤ素子において、その表示部の面より侵入する微
量の水分が該ＥＣＤ素子の駆動寿命に著しい影響を与え
ることは、本発明において初めて見い出されたものであ
る。In the present invention, particularly important requirements are the transparent conductive layer, EC
The moisture permeability of at least the front and back surfaces of the display section, which is formed by laminating a layer, an electrolyte layer, and a counter electrode layer, is 1.5 g.
/-”・24 hours or less, preferably 0.5 g 7m
”・It is coated with a flexible film (hereinafter also referred to as a flexible moisture-proof film) 11°12 for 24 hours or less.In a flexible ECD element using a flexible film as a substrate, its It was discovered for the first time in the present invention that a small amount of moisture entering from the surface of the display section has a significant effect on the driving life of the ECD element.
即ち、本発明において、可撓性防湿フィルムの透湿度が
１ ｇ ／’ＩＩ！・２４時間を超えた場合は、水分の
連続的な侵入により、ＥＣＤ素子の発色・消色時（駆動
時）に副反応が起こり、その性能が短時間の駆動で低下
する。That is, in the present invention, the moisture permeability of the flexible moisture-proof film is 1 g/'II! - If it exceeds 24 hours, continuous intrusion of moisture will cause side reactions when the ECD element develops and decolors (during driving), and its performance will deteriorate in short-term driving.
上記可撓性防湿フィルム１１．１２は、前記述湿度を有
するものであれば特に制限されない。伊えば、複数のプ
ラスチックフィルムの積層体、プラスチックフィルムと
金属箔との積層体、プラスチックフィルムにアルミニウ
ム等の金属や酸化ケイ素等の無機物を蒸着したもの等が
好適である。The flexible moisture-proof films 11 and 12 are not particularly limited as long as they have the above-mentioned humidity. For example, a laminate of a plurality of plastic films, a laminate of a plastic film and a metal foil, a plastic film on which a metal such as aluminum or an inorganic substance such as silicon oxide is vapor-deposited are suitable.
具体的には、ポリ四フッ化エチレンフィルム、ポリ三フ
ッ化エチレンフィルム、ポリエチレンテレフタレート／
アルミニウム箔／ポリオレフィン積層体、ポリプロピレ
ン／アルミニウム蒸着層／ポリオレフィン積層体、ポリ
エチレンテレフタレート／無機物蒸着層／ポリオレフィ
ン積層体、ポリ三ふっ化エチレン／ポリオレフィン積層
体（アクラ（商品名ニアライドケミカル社製）、ニドフ
ロン（商品名二日東電工四社製））等が挙げられる尚、
上記可撓製防湿フィルムの厚みは前記透湿度を満足する
範囲であれば、特に制限されないが特に表示部の透明導
電層２側に設けられる場合、フィルムの強度、表示の鮮
明性などの面より、−般に５０〜５００μ−が好ましい
。Specifically, polytetrafluoroethylene film, polytrifluoroethylene film, polyethylene terephthalate/
Aluminum foil/polyolefin laminate, polypropylene/aluminum vapor-deposited layer/polyolefin laminate, polyethylene terephthalate/inorganic vapor-deposited layer/polyolefin laminate, polytrifluoroethylene/polyolefin laminate (Acura (trade name: manufactured by Nearride Chemical Co., Ltd.), Nidoflon (Product name: Manufactured by 2nd Tokyo Denko Corporation)), etc.
The thickness of the flexible moisture-proof film is not particularly limited as long as it satisfies the moisture permeability, but especially when it is provided on the transparent conductive layer 2 side of the display section, the thickness of the flexible moisture-proof film is determined from the viewpoints of film strength, display clarity, etc. , - generally 50 to 500 microns.
また、表示部の表示面（透明導電層２側）の反対面を被
覆する可撓性防湿フィルム１２は、不透明のフィルムで
あってもよい。Moreover, the flexible moisture-proof film 12 that covers the surface opposite to the display surface (transparent conductive layer 2 side) of the display section may be an opaque film.
本発明において、可撓性防湿フィルムは、表示部の表面
及び裏面に設けられていればよいが、特にこのましくは
、第１図に示すように表示部の側面も被覆するように設
けることが好ましい。In the present invention, the flexible moisture-proof film may be provided on the front and back surfaces of the display section, but it is particularly preferable that the flexible moisture-proof film is provided so as to cover the side surfaces of the display section as well, as shown in FIG. is preferred.
上記被覆方法は特に制限されないが、例えば、接着、熱
融着等の手段による方法が一般的である。The above-mentioned coating method is not particularly limited, but methods such as adhesion and heat fusion are common.
また、上記可撓性防湿フィルム１１は、前記した可撓性
フィルム１の特性を満足するものであれば、該可撓性フ
ィルムｌを兼ねることも可能である。Furthermore, the flexible moisture-proof film 11 can also serve as the flexible film 1, as long as it satisfies the characteristics of the flexible film 1 described above.
本発明０ＥＣＤ素子は、上記構成により、駆動寿命を著
しく長くすることができるが、可撓性防湿フィルムの内
面に可撓性吸湿フィルム１３を設けることにより、ＥＣ
Ｄの駆動寿命を更に飛躍的に向上させることができ好ま
しい。即ち、かかる可撓性吸湿フィルム１３を可撓性防
湿フィルムの内面に設けることにより、該可撓性防湿フ
ィルムより不可避的に侵入する水分を保持し、該水分が
表示素子内部に至ることによる発色・消色時に副反応を
硬化的に防止することができる。The 0ECD element of the present invention can significantly extend the driving life due to the above configuration, but by providing the flexible moisture-absorbing film 13 on the inner surface of the flexible moisture-proof film,
This is preferable because the driving life of D can be further improved dramatically. That is, by providing the flexible moisture-absorbing film 13 on the inner surface of the flexible moisture-proof film, moisture that inevitably enters through the flexible moisture-proof film is retained, and color development occurs when the moisture reaches the inside of the display element. - Side reactions can be prevented in a curing manner during decolorization.
かかる可撓性吸湿フィルムは、吸湿性を有する材質であ
れば特に制限されない。好適なものを例示すれば、ナイ
ロン６フィルム、ナイロン１２フィルム、セルロースア
セテートフィルム、セルローストリアセテートフィルム
、ポリビニルアルコールフィルム、ポリイミドフィルム
、ポリウレタンフィルムなどが挙げられる。また、上記
フィルム接着層としてポリエチレンやエチレン酢酸ビニ
ル共重合樹脂をコートしたラミネートフィルムなども使
用できる。上記防湿フィルムは水分の含有料が０．４重
量％以下に調湿したものが好適に使用される。また、上
記可撓性吸湿フィルム１３は、可撓性防湿フィルムの内
面のうち、対向電極層側に設けることにより、十分な効
果があるが、特に第２図に示すように、可撓性防湿フィ
ルム１１゜１２の全ての内面にわたって設けることが好
ましい。Such a flexible hygroscopic film is not particularly limited as long as it is made of a material that has hygroscopic properties. Examples of suitable materials include nylon 6 film, nylon 12 film, cellulose acetate film, cellulose triacetate film, polyvinyl alcohol film, polyimide film, and polyurethane film. Furthermore, a laminate film coated with polyethylene or ethylene-vinyl acetate copolymer resin can also be used as the film adhesive layer. The moisture-proof film preferably has a moisture content of 0.4% by weight or less. Further, the flexible moisture-absorbing film 13 has a sufficient effect by providing it on the counter electrode layer side of the inner surface of the flexible moisture-proof film, but in particular, as shown in FIG. It is preferable to provide it over all the inner surfaces of the films 11 and 12.
また、可撓性吸湿フィルム１３は、可撓性防湿フィルム
とプロンキングしないように設けることが、ＥＣＤの耐
熱衝撃性を向上させることができ好ましい。例えば可撓
性吸湿フィルムと可撓性防湿フィルムとを接着せず、且
つ前記可撓性吸湿フィルムより耐ブロッキング性を有す
る材質を選択することにより、ブロッキングを防止でき
、かがる効果を発揮することができる。Further, it is preferable that the flexible moisture-absorbing film 13 is provided so as not to pronk with the flexible moisture-proof film, since this can improve the thermal shock resistance of the ECD. For example, by not adhering a flexible moisture-absorbing film and a flexible moisture-proof film, and by selecting a material that is more resistant to blocking than the flexible moisture-absorbing film, blocking can be prevented and a drastic effect can be achieved. be able to.
以上の説明より理解されるように、本発明のＥＣＤは、
可撓性を有しながら、駆動寿命を著しく伸ばすことが可
能である。また、可撓性防湿フィルムの内面に可撓性吸
湿フィルムを設けることにより、上記駆動寿命を更に向
上させることが可能である。As understood from the above explanation, the ECD of the present invention includes:
It is possible to significantly extend the drive life while maintaining flexibility. Further, by providing a flexible moisture-absorbing film on the inner surface of the flexible moisture-proof film, it is possible to further improve the driving life.
以下、本発明を更に具体的に説明するため、実施例を示
すが、本発明はこれらの実施例に限定されるものではな
い。EXAMPLES Hereinafter, in order to explain the present invention more specifically, Examples will be shown, but the present invention is not limited to these Examples.
尚、実施例及び比較例において、駆動寿命は、電極端子
間に±１．５■の電圧の印加を繰返し、正常に駆動した
回数で示した。In the Examples and Comparative Examples, the driving life was expressed as the number of times a voltage of ±1.5 .mu. was repeatedly applied between the electrode terminals and the device was driven normally.
また、信頼性は、４０°Ｃ１９０％Ｒｈの湿度下に保存
して、ＥＣＤ素子が劣化するまでの時間で示した。Moreover, reliability was shown by the time taken until the ECD element deteriorated after being stored at 40° C. and 190% Rh humidity.
更に、冷熱衝撃の信頼性は、−２５°Ｃに３０分保存し
た後、常温に５分保存し、次に７０℃に３０分保存する
繰り返し試験をし、ＥＣＤ素子が劣化するまでの繰り返
しの回数で示した。Furthermore, the reliability of thermal shock is tested by repeatedly storing at -25°C for 30 minutes, then storing at room temperature for 5 minutes, and then storing at 70°C for 30 minutes until the ECD element deteriorates. Shown as number of times.
実施例１
第１図に示す構造０ＥＣＤ素子を作成した。まず、表示
部を保持するための可撓性フィルム１としてポリエチレ
ンテレフタレートフィルム（厚さ１００μｌ１１）を使
用し、該可撓性フィルム１に透明導電層２としてＩＴＯ
の薄膜（厚さ４００人）をスパッタリング法で形成した
。次いでそのＩＴＯ２の上にＥＣＣ５０して、酸化タン
グステンを約５０００人の厚さで、マスクを使って１０
×１０ｍｍ”の正方形に真空蒸着した。Example 1 An ECD device having the structure shown in FIG. 1 was produced. First, a polyethylene terephthalate film (thickness 100 μl 11) is used as a flexible film 1 for holding a display section, and ITO is used as a transparent conductive layer 2 on the flexible film 1.
A thin film (400 layers thick) was formed by sputtering. Next, apply ECC50 to the ITO2 and apply tungsten oxide to a thickness of approximately 5,000 mm using a mask.
Vacuum deposition was performed on a square of 10 mm.
次に、上記正方形のＥＣＣ５０上に、下記組成の電解質
層４を厚さ３０μ■でスクリーン印刷して、紫外線を照
射し、硬化させた。上記電解質層４としては、ポリエー
テル型ウレタンジアクリレートプレポリマー（アートレ
ジン、Ｕ Ｎ−１３００（商品名）根土工業■製）４０
重量部、ポリエチレングリコール（平均分子量４００；
和光純薬工業■製）１００重量部、メトキシエチレング
リコールメタクリレート（ＮＫエステルＭＯ９Ｇ（商品
名）新中村化学工業■製）１１０重量部、ポリエチレン
グリコールジメタクリレート（ＮＫエステル４Ｇ（商品
名）新中村化学工業■製）４５重量部、及びジペンタエ
リスリトールへキサアクリレート（ＮＫエステルＡＤＰ
−６（商品名）新中村化学工業■製）１０重量部に過塩
素酸リチウム３０重量部を溶解させ、さらに、二酸化チ
タン１３０重量部を加えたものに、光重合開始剤（ダロ
キュア１１７３（商品名）メルクジャパン■製）を３重
量部混合したものを用いた。Next, an electrolyte layer 4 having the following composition was screen printed on the square ECC 50 to a thickness of 30 μm, and was cured by irradiation with ultraviolet rays. The electrolyte layer 4 is made of polyether type urethane diacrylate prepolymer (Art Resin, U N-1300 (trade name) manufactured by Nedo Kogyo ■) 40
Parts by weight, polyethylene glycol (average molecular weight 400;
100 parts by weight of methoxyethylene glycol methacrylate (NK Ester MO9G (trade name) manufactured by Shin Nakamura Chemical Industries ■), 110 parts by weight of polyethylene glycol dimethacrylate (NK Ester 4G (trade name) manufactured by Shin Nakamura Chemical Industries ■) ) 45 parts by weight, and dipentaerythritol hexaacrylate (NK ester ADP
30 parts by weight of lithium perchlorate was dissolved in 10 parts by weight of -6 (product name) manufactured by Shin Nakamura Chemical Industry ■, and 130 parts by weight of titanium dioxide was added to the solution, and a photopolymerization initiator (Darocur 1173 (product name) A mixture of 3 parts by weight of 3 parts by weight of 3 parts by weight of 3 parts by weight of 3 parts by weight of 3 parts by weight of 3 parts by weight of 3 parts by weight was used.
また、電解質層４の上に下記組成の対向電極５をスクリ
ーン印刷した。厚さは１０μ−であった。Further, a counter electrode 5 having the composition shown below was screen printed on the electrolyte layer 4. The thickness was 10μ.
上記対向電極の組成は、前記電解質の組成から二酸化チ
タンを取り除いたものに、導電性粉末（Ｗｌ（商品名）
三菱金属■製）を２３０重量部混練したものを用いた。The composition of the counter electrode is the composition of the electrolyte with titanium dioxide removed, and conductive powder (Wl (trade name)).
A mixture obtained by kneading 230 parts by weight of (manufactured by Mitsubishi Metals Ltd.) was used.
次に、ＥＣＣ５０電解質層４、対向電極層５の積層物が
絶縁体層７で区画されめ区画部分以外に、紫外線硬化樹
脂（ＲＩ Ｇ、 Ｎｏ、８０３ホワイト（商品名）■セ
イコーアドバンス製）よりなる絶縁体層７（厚さ３０μ
、）をスクリーン印刷により形成し、紫外線照射により
、硬化させて表示部を形成した。Next, the laminate of the ECC50 electrolyte layer 4 and the counter electrode layer 5 is partitioned by an insulator layer 7, and a layer of ultraviolet curable resin (RI G, No. 803 White (trade name) manufactured by Seiko Advance) is added to the area other than the partitioned area. Insulator layer 7 (thickness 30μ
, ) was formed by screen printing and cured by ultraviolet irradiation to form a display section.
次に、対向電極層５の上に集電体層６として、カーボン
ペースト（ＦＣ−４０４（商品名）藤倉化成■製）を厚
さ１０μｍで印刷し、硬化させた。Next, carbon paste (FC-404 (trade name) manufactured by Fujikura Kasei ■) was printed to a thickness of 10 μm as a current collector layer 6 on the counter electrode layer 5 and cured.
また、電極端子１０として、厚さ１００μ箱、巾２ｍ１
１１、長さ３０ｍｍの銅箔を導電性接着剤（６４Ｃ（商
品名）ブレースジャパン■製）で接続した。In addition, as the electrode terminal 10, a box with a thickness of 100μ and a width of 2m1 is used.
11. Copper foils with a length of 30 mm were connected with a conductive adhesive (64C (trade name) manufactured by Brace Japan ■).
次に、オーバーコート層８として、紫外線硬化樹脂（Ｒ
ＩＧ無黄変ベース（商品名）■セイコーアドバンス製）
を用いて２０μ−の厚さでコートし、保護とした。Next, as the overcoat layer 8, an ultraviolet curing resin (R
IG non-yellowing base (product name) ■Manufactured by Seiko Advance)
It was coated with a thickness of 20 μm to protect it.
次に、可撓性防湿フィルム層１１及び１２として、三ふ
っ化エチレン樹脂フィルムに接着剤が賦活された防湿フ
ィルム（アクラ２２Ｃ２厚さ７．５ａ＋ｉｌ （商品
名）アライドケミカル社製）を透明基板１より大きい面
積で前記エレクトロクロミックデイスプレィ素子の表示
側及び裏側に、ラミネーターにより貼り合わせシールし
た。ラミネーターのロール温度は１３０°Ｃ１加圧力は
５ｋｇｆ／Ｃｍ”であった。Next, as the flexible moisture-proof film layers 11 and 12, a moisture-proof film (Acra 22C2 thickness 7.5a+il (trade name) manufactured by Allied Chemical Co., Ltd.), which is a trifluoroethylene resin film activated with an adhesive, is attached to the transparent substrate 1. A larger area was pasted and sealed on the display side and back side of the electrochromic display element using a laminator. The roll temperature of the laminator was 130°C and the pressing force was 5 kgf/Cm''.
この様にして製作した可撓性エレクトロクロミックデイ
スプレィ素子の駆動寿命、保存安定性及び冷熱衝撃耐性
を調べたところ、表１で示したようになり、信頼性が向
上した。The driving life, storage stability, and thermal shock resistance of the flexible electrochromic display element manufactured in this manner were investigated, and as shown in Table 1, the reliability was improved.
実施例２
可撓性防湿フィルムを下記のものに代えた以外は、実施
例１と同様にＥＣＤ素子を製作した。即ち、可撓性防湿
フィルムとして、表示側はアクラ２２ Ｃ，７，５ｍ１
ｌを用い、裏面側可撓性フィルム１２として、透湿度０
．０１ ｇ／ｍ” ・２４ｈｒの食品包装用ラミネート
フィルム（ポリエステルフィルム（厚さ１２μ＋＝）／
アルミニウム箔（厚さ１００μｍ）／ポリオレフィン接
着層（厚さ６０．ｙｓ＋））を用い、ラミネーターのロ
ール温度１２５°Ｃ１加圧力は５ｋｇｆ／ｃｍ”でラミ
ネートした。得られたエレクトロクロミックデイスプレ
ィ素子の駆動寿命、保存安定性及び冷熱衝撃耐性の結果
を表１に示した。Example 2 An ECD element was manufactured in the same manner as in Example 1, except that the flexible moisture-proof film was replaced with the one shown below. That is, as a flexible moisture-proof film, the display side is Accra 22C, 7.5m1
1, and the back side flexible film 12 has a moisture permeability of 0.
．． 01 g/m”・24hr food packaging laminate film (polyester film (thickness 12μ+=)/
Using aluminum foil (thickness 100 μm)/polyolefin adhesive layer (thickness 60.ys+)), lamination was carried out at a laminator roll temperature of 125°C and a pressure of 5 kgf/cm. Driving of the obtained electrochromic display element Table 1 shows the results of lifespan, storage stability, and thermal shock resistance.
実施例３
可撓性防湿フィルム層１１及び１２を下記のものに代え
た以外は実施例１と同様にと７てＥＣＤ素子を製作した
。即ち、可撓性防湿フィルムとしてにトラロン４８１１
（商品名）日東電工■製）、透湿度１．０ ｇ ／ｍ
”・２４ｈｒを用いた。得られたＥＣＤ素子の試験結果
を表１に示した。Example 3 An ECD element was manufactured in the same manner as in Example 1 except that the flexible moisture-proof film layers 11 and 12 were replaced with the following. That is, Toralon 4811 was used as a flexible moisture-proof film.
(Product name) Made by Nitto Denko ■), moisture permeability 1.0 g/m
24 hours.The test results of the obtained ECD device are shown in Table 1.
実施例４
実施例１において、可撓性防湿フィルムとして、透湿度
１．２ ｇ／ｓ” ・２４ｈｒの（ＧＴフィルムＧＴ／
ＣＣＰ （商品名）東洋インキ■製）を用いた以外は同
様にしてＥＣＤ素子を製作し、同様の試験を行った。そ
の結果を表１に示した。尚、ＧＴフィルムはポリエステ
ルフィルム／無機酸化物蒸着／ポリオレフィン接着層の
構成になっている。Example 4 In Example 1, as a flexible moisture-proof film, (GT film GT/
An ECD element was manufactured in the same manner except that CCP (trade name, manufactured by Toyo Ink ■) was used, and the same test was conducted. The results are shown in Table 1. The GT film has a structure of polyester film/inorganic oxide vapor deposition/polyolefin adhesive layer.
比較例１
比較のため、可撓性防湿フィルムを付けないものについ
て試験したところ、駆動寿命１０００回、保存安定性（
寿命）５時間及び冷熱衝撃耐性１回であった。Comparative Example 1 For comparison, a product without a flexible moisture-proof film was tested.
Lifespan: 5 hours and thermal shock resistance: 1 time.
比較例２
実施例１において、可撓性防湿フィルム１１及び１２と
して、ポリプロピレン（２５μｍ）／アルミニウム蒸着
（５μｍ）／ポリエチレン接着層（２５μ、）のフィル
ム（透湿度２．６ ｇ ／ｌａ”・２４ｈｒ）を用い、
ロール温度１１０°Ｃ１加圧力４ ｋｇｆ／Ｃ１”でラ
ミネートした以外は同様にして、ＥＣＤ素子を製作した
。その結果を表１に示した。Comparative Example 2 In Example 1, as the flexible moisture-proof films 11 and 12, a polypropylene (25 μm)/aluminum vapor deposition (5 μm)/polyethylene adhesive layer (25 μm) film (moisture permeability 2.6 g/la”・24 hr) was used. ) using
An ECD element was manufactured in the same manner except that lamination was performed at a roll temperature of 110°C and a pressing force of 4 kgf/C1''.The results are shown in Table 1.
比較例３
実施例１において、可撓性防湿フィルムとして、ポリエ
チレン（２５μ、）／ナイロン（２５μ顧）／ポリエチ
レン接着層（２５μｍ）のフィルム（透湿度５．５ ｇ
／ｍ” ２４ｈｒ）を用い、ロール温度１１０°Ｃ１加
圧力３ｋｇｆ／ｃｍ”でラミネートした以外は同様にＥ
ＣＤ素子を製作し、試験を行った。Comparative Example 3 In Example 1, a film (moisture permeability 5.5 g) of polyethylene (25 μm)/nylon (25 μm)/polyethylene adhesive layer (25 μm) was used as the flexible moisture-proof film.
/m" 24hr) and laminated at a roll temperature of 110°C and a pressure of 3kgf/cm".
A CD element was manufactured and tested.
その結果を表１に示した。The results are shown in Table 1.
実施例５
実施例１において、可撓性防湿フィルム１１及び１２を
ラミネートするまえ０ＥＣＤ素子の裏面側（オーバーコ
ート層８側）に吸湿フィルム１３としてナイロン（１０
０μｍ）にエチレン酢酸ビニル共重合体樹脂を接着層と
して２０μｍコートしたフィルムをラミネーターでロー
ル温度１２５℃、加圧力３．５ ｋｇｆ／ｃｍ”でラミ
ネートした。さらに実施例１と同様に可撓性防湿フィル
ムをラミネートし第２図に示す（但し、吸湿フィルムは
オーバーコート層側のみ）ＥＣＤ素子を製作し、試験を
行った。その結果を表１に示した。Example 5 In Example 1, before laminating the flexible moisture-proof films 11 and 12, nylon (10
A film coated with 20 μm of ethylene vinyl acetate copolymer resin as an adhesive layer was laminated with a laminator at a roll temperature of 125° C. and a pressing force of 3.5 kgf/cm. The films were laminated to produce an ECD device as shown in FIG. 2 (however, the moisture-absorbing film was only on the overcoat layer side) and tested.The results are shown in Table 1.
第１図及び第２図は、本発明のエレクトロクロミックデ
イスプレィの代表的な態様を示す断面図である。
また、図におい各番号は夫々下記の名称を示す。
１・・・可撓性フィルム、２・・・透明導電槽、３・・
・ＥＣ層、４・・・電解質層、５・・・対向電極層、６
・・・集電体、７・・・絶縁体、８・・・オーバーコー
ト層、９・・・導電体、１０・・・電極端子、１１．１
２・・・可撓性防湿フィルム、１３・・・可撓性吸湿フ
ィルム。1 and 2 are cross-sectional views showing typical embodiments of the electrochromic display of the present invention. In addition, each number in the figure indicates the name below. 1...Flexible film, 2...Transparent conductive tank, 3...
・EC layer, 4... Electrolyte layer, 5... Counter electrode layer, 6
... Current collector, 7 ... Insulator, 8 ... Overcoat layer, 9 ... Conductor, 10 ... Electrode terminal, 11.1
2... Flexible moisture-proof film, 13... Flexible moisture-absorbing film.
Claims (2)
質層及び対向電極層を積層して構成される表示部の少な
くとも表面及び裏面を透湿度が１．５ｇ／ｍ＾２・２４
時間以下の可撓性フィルムによって被覆したことを特徴
とするエレクトロクロミックディスプレイ素子。(1) The moisture permeability of at least the front and back surfaces of the display section, which is constructed by laminating a transparent conductive layer, an electrochromic material layer, an electrolyte layer, and a counter electrode layer, is 1.5 g/m^2.24
An electrochromic display element characterized in that it is coated with a flexible film that lasts for less than 2 hours.
に可撓性吸湿フィルムを設けた請求項第１項記載のエレ
クトロクロミックディスプレイ素子。(2) The electrochromic display element according to claim 1, wherein a flexible moisture-absorbing film is provided on the inner surface of the flexible film at least on the counter electrode layer side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12419090A JPH0420936A (en) | 1990-05-16 | 1990-05-16 | Electrochromic display element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12419090A JPH0420936A (en) | 1990-05-16 | 1990-05-16 | Electrochromic display element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0420936A true JPH0420936A (en) | 1992-01-24 |
Family
ID=14879216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12419090A Pending JPH0420936A (en) | 1990-05-16 | 1990-05-16 | Electrochromic display element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0420936A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004534284A (en) * | 2001-07-12 | 2004-11-11 | サン−ゴバン グラス フランス | Electrically controllable device with variable optical and / or energy properties |
| JP2007066686A (en) * | 2005-08-31 | 2007-03-15 | Toppan Printing Co Ltd | Sealing film for display element |
| JP2007072127A (en) * | 2005-09-06 | 2007-03-22 | Seiko Epson Corp | Electrophoresis apparatus and electronic device |
| JP2009003013A (en) * | 2007-06-19 | 2009-01-08 | Citizen Holdings Co Ltd | Electrophoresis display device |
| JP2009529711A (en) * | 2006-03-09 | 2009-08-20 | イー インク コーポレイション | Electro-optic display device having edge seal |
| US9708719B2 (en) | 2010-12-10 | 2017-07-18 | Aquahydrex Pty Ltd | Multi-layer water-splitting devices |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5593128A (en) * | 1979-01-08 | 1980-07-15 | Citizen Watch Co Ltd | All solid state type electrochromic display cell |
| JPS6312192B2 (en) * | 1985-10-09 | 1988-03-17 | Dai Ichi Kogyo Seiyaku Co Ltd |
-
1990
- 1990-05-16 JP JP12419090A patent/JPH0420936A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5593128A (en) * | 1979-01-08 | 1980-07-15 | Citizen Watch Co Ltd | All solid state type electrochromic display cell |
| JPS6312192B2 (en) * | 1985-10-09 | 1988-03-17 | Dai Ichi Kogyo Seiyaku Co Ltd |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004534284A (en) * | 2001-07-12 | 2004-11-11 | サン−ゴバン グラス フランス | Electrically controllable device with variable optical and / or energy properties |
| JP2007066686A (en) * | 2005-08-31 | 2007-03-15 | Toppan Printing Co Ltd | Sealing film for display element |
| JP2007072127A (en) * | 2005-09-06 | 2007-03-22 | Seiko Epson Corp | Electrophoresis apparatus and electronic device |
| JP2009529711A (en) * | 2006-03-09 | 2009-08-20 | イー インク コーポレイション | Electro-optic display device having edge seal |
| JP2013084014A (en) * | 2006-03-09 | 2013-05-09 | E Ink Corp | Electro-optic display element with edge seal |
| JP2009003013A (en) * | 2007-06-19 | 2009-01-08 | Citizen Holdings Co Ltd | Electrophoresis display device |
| US9708719B2 (en) | 2010-12-10 | 2017-07-18 | Aquahydrex Pty Ltd | Multi-layer water-splitting devices |
| US10428431B2 (en) | 2010-12-10 | 2019-10-01 | Aquahydrex Pty Ltd | Multi-layer water-splitting devices |
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