JPH0438539Y2 - - Google Patents
Info
- Publication number
- JPH0438539Y2 JPH0438539Y2 JP1986022193U JP2219386U JPH0438539Y2 JP H0438539 Y2 JPH0438539 Y2 JP H0438539Y2 JP 1986022193 U JP1986022193 U JP 1986022193U JP 2219386 U JP2219386 U JP 2219386U JP H0438539 Y2 JPH0438539 Y2 JP H0438539Y2
- Authority
- JP
- Japan
- Prior art keywords
- layer
- film
- pva
- transparent
- piezoelectric 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.)
- Expired
Links
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 37
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 37
- 239000000463 material Substances 0.000 claims description 13
- 229920000128 polypyrrole Polymers 0.000 claims description 11
- 238000006116 polymerization reaction Methods 0.000 claims description 5
- 239000012808 vapor phase Substances 0.000 claims description 5
- 239000010408 film Substances 0.000 description 63
- KAESVJOAVNADME-UHFFFAOYSA-N Pyrrole Chemical compound C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 description 18
- 239000002033 PVDF binder Substances 0.000 description 5
- 239000007800 oxidant agent Substances 0.000 description 5
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 5
- 238000001723 curing Methods 0.000 description 4
- 239000002019 doping agent Substances 0.000 description 4
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 3
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 3
- 239000000460 chlorine Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229920000620 organic polymer Polymers 0.000 description 3
- 229910000077 silane Inorganic materials 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 125000005396 acrylic acid ester group Chemical group 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000012685 gas phase polymerization Methods 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- YVXDRFYHWWPSOA-BQYQJAHWSA-N 1-methyl-4-[(e)-2-phenylethenyl]pyridin-1-ium Chemical group C1=C[N+](C)=CC=C1\C=C\C1=CC=CC=C1 YVXDRFYHWWPSOA-BQYQJAHWSA-N 0.000 description 1
- KMNCBSZOIQAUFX-UHFFFAOYSA-N 2-ethoxy-1,2-diphenylethanone Chemical compound C=1C=CC=CC=1C(OCC)C(=O)C1=CC=CC=C1 KMNCBSZOIQAUFX-UHFFFAOYSA-N 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 108010020346 Polyglutamic Acid Proteins 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 208000003028 Stuttering Diseases 0.000 description 1
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical group C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 1
- 239000012935 ammoniumperoxodisulfate Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- -1 chlorine ions Chemical class 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000011243 crosslinked material Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 229960002089 ferrous chloride Drugs 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- NMCUIPGRVMDVDB-UHFFFAOYSA-L iron dichloride Chemical compound Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 239000003504 photosensitizing agent Substances 0.000 description 1
- 229920006112 polar polymer Polymers 0.000 description 1
- 229920002643 polyglutamic acid Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000003505 polymerization initiator Substances 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Description
【考案の詳細な説明】
「産業上の利用分野」
本考案は、透視型指タツチ入力装置のタツチ入
力板などとして好適に利用される透明性圧電フイ
ルムに関するものである。[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a transparent piezoelectric film suitably used as a touch input board of a see-through type finger touch input device.
「従来技術とその問題点」
このような透明性圧電フイルムとしては、従
来、ITO（インジウム−スズ−酸化物）などの金
属をスパツタリングなどで物理蒸着して透明フイ
ルム上に透明電極を形成したものや、有機金属酸
化物をスプレー塗布したのち、加熱処理して透明
フイルム上に透明電極を形成したものが提供され
ていた。"Prior art and its problems" Conventionally, such transparent piezoelectric films are made by physically depositing metal such as ITO (indium tin oxide) by sputtering or the like to form transparent electrodes on a transparent film. Or, a transparent electrode was formed on a transparent film by spray coating an organic metal oxide and then heat-treating the film.
ところが、このような透明性圧電フイルムは、
いずれも製造時にフイルムがかなり高温に加熱さ
れるため、フイルムをなす有機高分子圧電材料の
配向構造が乱れ、圧電フイルムとしての特性が劣
化してしまう不都合があつた。 However, such a transparent piezoelectric film
In both cases, the film is heated to a fairly high temperature during production, which causes the orientation structure of the organic polymer piezoelectric material forming the film to be disturbed, resulting in deterioration of the properties of the piezoelectric film.
「問題点を解決するための手段」
そこで本考案の透明性圧電フイルムにあつて
は、透明性を有する有機高分子圧電材料からなる
フイルムの両面に、ポリビニルアルコールからな
る層を介して、ピロールの気相重合によつてポリ
ピロールの導電層を形成して透明電極となし、更
にそのうち少なくとも一方の面に表面硬化処理層
を設けることによつて、上記問題点の解決を図つ
た。``Means for Solving the Problems'' Therefore, in the transparent piezoelectric film of the present invention, pyrrole is coated on both sides of the film made of a transparent organic polymer piezoelectric material with a layer made of polyvinyl alcohol interposed therebetween. The above problems were solved by forming a conductive layer of polypyrrole by vapor phase polymerization to form a transparent electrode, and further providing a surface hardening layer on at least one surface of the conductive layer.
以下、本考案の透明性圧電フイルムについて詳
しく説明する。 Hereinafter, the transparent piezoelectric film of the present invention will be explained in detail.
本考案の透明性圧電フイルムは、図に示すよう
に、基材フイルム１の両面にポリビニルアルコー
ル層（以下、PVA層と略称する）２，２と、電
極になるポリピロール層（以下、導電層と略称す
る）３，３とが順次積層され、さらに上面側に表
面硬化処理層４が積層されてなるものである。 As shown in the figure, the transparent piezoelectric film of the present invention has polyvinyl alcohol layers (hereinafter referred to as PVA layers) 2, 2 on both sides of a base film 1, and a polypyrrole layer (hereinafter referred to as a conductive layer) that becomes an electrode. 3 and 3 (abbreviated as abbreviated) are laminated in sequence, and a surface hardened layer 4 is further laminated on the upper surface side.
基材フイルム１は、圧電効果を有する有機高分
子圧電材料からなるものである。このような材料
としてポリアミノ酸誘導体やエレクトレツト化さ
れた極性高分子などがあり、ポリフツ化ビニリデ
ン（PVDF）やポリグルタミン酸誘導体を一軸延
伸後、公電界下で熱処理することによつて得られ
るフイルムなどが好適に用いられている。中で
も、PVDFからなるフイルムは、良好な透明性を
有する点で、この基材フイルム１に好ましく用い
られる。 The base film 1 is made of an organic polymer piezoelectric material having a piezoelectric effect. Such materials include polyamino acid derivatives and electrified polar polymers, such as films obtained by uniaxially stretching polyvinylidene fluoride (PVDF) and polyglutamic acid derivatives and then heat-treating them under a public electric field. is suitably used. Among these, a film made of PVDF is preferably used as the base film 1 because it has good transparency.
PVA層２は、ポリビニルアルコール（PVA）
によつて形成された層である。このPVA層２を
形成するPVAには、通常のPVAや、架橋型の
PVAなど種々のものを利用できる。架橋型PVA
としては、分子内に感光性の基が導入された光架
橋型PVAや過酸化物などが含有された熱架橋型
PVAなどが好適に用いられる。これらの中でも、
光架橋型PVAは紫外線照射によつて網目構造を
速やかに形成できるので、特に好適に用いられ
る。この光架橋型PVAとしては、
J.Polymer Sci.22（1984）No4.221に発表され
たもの、例えば水酸基をスチルバゾリウム基で置
換したPVAなどを利用できる。このPVA層２は
基材１上の所定箇所に均一な厚さで形成されてい
ればよく、通常１〜50μm程度と薄く形成されて
いる。 PVA layer 2 is polyvinyl alcohol (PVA)
This layer is formed by The PVA that forms this PVA layer 2 includes regular PVA and cross-linked PVA.
Various materials such as PVA can be used. Cross-linked PVA
Examples include photo-crosslinkable PVA with a photosensitive group introduced into the molecule and thermally crosslinkable PVA containing peroxides.
PVA or the like is preferably used. Among these,
Photocrosslinkable PVA is particularly suitable for use because it can quickly form a network structure by irradiation with ultraviolet rays. As this photo-crosslinkable PVA, the one published in J. Polymer Sci. 22 (1984) No. 4.221, for example, PVA in which the hydroxyl group is substituted with a stilbazolium group, etc. can be used. This PVA layer 2 only needs to be formed at a predetermined location on the base material 1 with a uniform thickness, and is usually formed as thin as about 1 to 50 μm.
導電層３は、ポリピロールによつて形成された
層で、導電性を付与するために適当量のドーパン
トが添加されている。ここで添加されるドーパン
トとしては、塩素イオン（Cl-）や四フツ化ホウ
素（BF4 -）などを挙げることができる。 The conductive layer 3 is a layer formed of polypyrrole, and an appropriate amount of dopant is added to impart conductivity. Examples of dopants added here include chlorine ions (Cl − ) and boron tetrafluoride (BF 4 − ).
表面硬化処理層４は、導電層３およびPVA層
２を保護するものである。この表面硬化処理層４
をなす材料およびその成形方法、硬化方法などは
特には制限されず、導電層３の導電性を阻害しな
いものであれば良いが、透明性圧電フイルムを得
るために、この表面硬化処理層４と良好な透明性
を有する材料で形成する必要がある。そのような
表面硬化処理層４に好適なものとしては、例え
ば、溶媒で稀釈されたオリゴマー（多価アルコー
ルのアクリル酸エステルなど）に感光剤（ベイゾ
インエチルエーテルなど）が添加された感光性溶
液を塗布し乾燥した後、紫外線等を照射して硬化
せしめて得られる硬化層や、重合開始材が添加さ
れた単量体（スチレンモノマーなど）、オリゴマ
ー等を塗布した後、加熱処理して得られる硬化層
などを挙げることができる。また、加水分解され
たアルキルトリアルコキシシランに４官能シラン
の加水分解物と硬化触媒とが添加された組成物を
硬化させて得られるシラン系硬化層や、酸化珪素
（SiO2）のスタツタ膜などを用いることもでき
る。この表面硬化処理層４の硬度は、この透明性
圧電フイルムをタツチ入力板として用いる場合、
エンピツ硬度で4H以上であることが望ましい。
硬度が4H未満になるとこの透明性圧電フイルム
の透明性が損なわれ易い不都合を生じる。 The surface hardening layer 4 protects the conductive layer 3 and the PVA layer 2. This surface hardening layer 4
There are no particular restrictions on the material forming the layer, its molding method, curing method, etc., as long as it does not inhibit the conductivity of the conductive layer 3. However, in order to obtain a transparent piezoelectric film, the surface hardening layer 4 and It must be made of a material with good transparency. A suitable material for such a surface hardening layer 4 is, for example, a photosensitive material in which a photosensitizer (such as bayzoin ethyl ether) is added to an oligomer (such as an acrylic acid ester of a polyhydric alcohol) diluted with a solvent. After applying a solution and drying it, a cured layer obtained by curing it by irradiating it with ultraviolet rays, etc., or applying a monomer (such as styrene monomer), oligomer, etc. to which a polymerization initiator has been added, is then heat-treated. Examples include the resulting cured layer. In addition, a silane-based cured layer obtained by curing a composition in which a hydrolyzed tetrafunctional silane and a curing catalyst are added to a hydrolyzed alkyltrialkoxysilane, a stutter film of silicon oxide (SiO 2 ), etc. You can also use The hardness of this surface hardening layer 4 is as follows when using this transparent piezoelectric film as a touch input board:
It is desirable that the pencil hardness is 4H or higher.
If the hardness is less than 4H, the transparency of this transparent piezoelectric film is likely to be impaired.
次ぎに、本考案の透明性圧電フイルムの製造方
法を説明する。 Next, a method for manufacturing the transparent piezoelectric film of the present invention will be explained.
本考案の透明性圧電フイルムを製造するには、
まず基材フイルム１の表面に、PVA水溶液を均
一な厚さに塗布する。このPVA水溶液には酸化
剤が添加されている。添加された酸化剤は、後述
するピロールの気相重合の開始剤として働くもの
である。この酸化剤には、塩化第二鉄（FeCl3）、
ペルオクソ二硫酸アンモニウム（NH4）2S2O8な
どが用いられる。PVA層２をなす材料に架橋型
PVAを用いた場合、PVAの架橋は、後述する導
電層３を形成する前あるいは後に紫外線照射等の
所定の手段で行なわれる。 To manufacture the transparent piezoelectric film of the present invention,
First, a PVA aqueous solution is applied to the surface of the base film 1 to a uniform thickness. An oxidizing agent is added to this PVA aqueous solution. The added oxidizing agent functions as an initiator for gas phase polymerization of pyrrole, which will be described later. This oxidizing agent includes ferric chloride (FeCl 3 ),
Ammonium peroxodisulfate (NH 4 ) 2 S 2 O 8 and the like are used. Cross-linked material for PVA layer 2
When PVA is used, crosslinking of PVA is performed by a predetermined means such as ultraviolet irradiation before or after forming the conductive layer 3, which will be described later.
PVA層２の表面にはピロールの蒸気が流され、
ピロールの気相重合が行なわれる。その際ピロー
ルはPVA層２中の酸化剤によつて重合を開始せ
しめられて、ポリピロールとなり薄膜を形成す
る。上記酸化剤として塩化第二鉄を使用した場
合、塩化第二鉄（FeCl3）は塩化第一鉄（FeCl2）
に還元され、遊離された塩素イオン（Cl-）は、
ポリピロール内にドーパントとして取り込まれ
る。その結果、ポリピロールには導電性が付与さ
れる。そして、これにより導電層３が形成され
る。 Pyrrole vapor is flowed onto the surface of PVA layer 2,
Gas phase polymerization of pyrrole is carried out. At this time, the pyrrole is started to polymerize by the oxidizing agent in the PVA layer 2, and becomes polypyrrole to form a thin film. When ferric chloride is used as the oxidizing agent, ferric chloride (FeCl 3 ) becomes ferrous chloride (FeCl 2 ).
The chloride ion (Cl - ) released and reduced to
Incorporated as a dopant within polypyrrole. As a result, polypyrrole is imparted with electrical conductivity. Thus, a conductive layer 3 is formed.
この後、導電層３上には、表面硬化処理層４が
所定の方法で形成される。 Thereafter, a surface hardening layer 4 is formed on the conductive layer 3 by a predetermined method.
「作用」
本考案の透明性圧電フイルムにあつては、基材
フイルム１上に、PVA層２を介してピロールの
気相重合によつてポリピロールの導電層３が透明
電極として形成されたものであるので、導電層３
の形成時に基材フイルム１が高温に加熱されない
ことから、基材フイルム１の配向構造が乱れるこ
とがなく、よつて基材フイルム１の圧電性および
導電性等の電気特性が高い水準で維持されるもの
となる。"Function" In the transparent piezoelectric film of the present invention, a conductive layer 3 of polypyrrole is formed as a transparent electrode on a base film 1 via a PVA layer 2 by vapor phase polymerization of pyrrole. Therefore, the conductive layer 3
Since the base film 1 is not heated to a high temperature during formation, the orientation structure of the base film 1 is not disturbed, and the electrical properties such as piezoelectricity and conductivity of the base film 1 are maintained at a high level. become something that
また、本考案の透明性圧電フイルムは、二つの
透明電極の導電層３，３のうち、少なくとも一方
が表面硬化処理層４で覆われたものであるので、
導電層３からのドーパントの揮散が阻止され、導
電層３の導電率の低下が長期間にわたつて防止さ
れることから、導電層３の圧電性が安定したもの
となる。 Furthermore, in the transparent piezoelectric film of the present invention, at least one of the conductive layers 3, 3 of the two transparent electrodes is covered with the surface hardening layer 4.
Volatilization of the dopant from the conductive layer 3 is prevented, and a decrease in the conductivity of the conductive layer 3 is prevented over a long period of time, so that the piezoelectricity of the conductive layer 3 becomes stable.
さらに、本考案の透明性圧電フイルムは、導電
層３が表面硬化処理層４により保護されたもので
あるので、優れた耐摩耗性等の機械的強度が付与
されたものとなる。従つて、本考案の透明性圧電
フイルムは、指などで何度も触れられるタツチ入
力板などに好適に利用できるものとなる。 Furthermore, in the transparent piezoelectric film of the present invention, since the conductive layer 3 is protected by the surface hardening layer 4, it is endowed with mechanical strength such as excellent abrasion resistance. Therefore, the transparent piezoelectric film of the present invention can be suitably used for touch input boards that can be touched many times with fingers or the like.
また、本考案の透明性圧電フイルムにおいて
は、その表面に圧力を加えると、基材フイルム１
の表面にこの圧力に比例した電荷が発生する。基
材フイルム１の表面には誘電材料のポリビニルア
ルコールからなり、かつ薄いPVA層２が積層さ
れているので、上記電荷と反対の極性を有する電
荷がPVA層２の他方の表面に誘起され、この誘
起電荷が電極として作用するポリピロール層３，
３から出力され、上記圧力の印加が検出される。 In addition, in the transparent piezoelectric film of the present invention, when pressure is applied to the surface, the base film 1
An electric charge proportional to this pressure is generated on the surface of the Since a thin PVA layer 2 made of polyvinyl alcohol, which is a dielectric material, is laminated on the surface of the base film 1, charges having the opposite polarity to the above charges are induced on the other surface of the PVA layer 2, and this a polypyrrole layer 3 in which the induced charge acts as an electrode;
3, and the application of the pressure is detected.
「実施例」
以下、実施例に沿つて本考案の透明性圧電フイ
ルムを更に詳しく説明する。"Examples" The transparent piezoelectric film of the present invention will be described in more detail below with reference to Examples.
実施例 １
基材フイルム１として透明性、圧電性を有する
厚さ50μmのPVDFフイルムを用意した。この基
材フイルム１の両面にPVAとFeCl3とが水に溶解
されてなる混合溶液を厚さ2μmに塗布した後、乾
燥した。次いで、このものをピロール蒸気に接触
させて、ピロールの気相重合により、表面抵抗
103Ω／□の導電層３を形成した。このフイルム
の光電透過率は80％であつた。Example 1 A 50 μm thick PVDF film having transparency and piezoelectricity was prepared as the base film 1. A mixed solution of PVA and FeCl 3 dissolved in water was applied to a thickness of 2 μm on both sides of the base film 1, and then dried. Next, this material is brought into contact with pyrrole vapor, and the surface resistance is changed by vapor phase polymerization of pyrrole.
A conductive layer 3 of 10 3 Ω/□ was formed. The photoelectric transmittance of this film was 80%.
この後、ベンゾインエチルエーテルを含むアク
リル酸エステルのオリゴマーを塗布し、紫外線を
照射して最適条件下で硬化させて厚さ1μmの表面
硬化処理層４を形成し、透明性圧電フイルムを得
た。 Thereafter, an oligomer of acrylic acid ester containing benzoin ethyl ether was applied and cured under optimal conditions by irradiating ultraviolet rays to form a surface hardening layer 4 with a thickness of 1 μm, thereby obtaining a transparent piezoelectric film.
この透明性圧電フイルムを用いて、各種の試験
を行つた。 Various tests were conducted using this transparent piezoelectric film.
まず、この透明性圧電フイルムを50°C・100％
RHの環境下で30日間放置した後、フイルムに圧
力を加えてその応答をオシロスコープで測定し
た。その結果、応答性は試験前とほとんど変化な
く、過酷な環境下であつてもこの透明性圧電フイ
ルムと正常に動作するものであることが確認され
た。 First, this transparent piezoelectric film was heated at 50°C and 100%
After being left in an RH environment for 30 days, pressure was applied to the film and its response was measured using an oscilloscope. As a result, the response was almost unchanged from before the test, and it was confirmed that the transparent piezoelectric film operated normally even under harsh environments.
次ぎに、透明性圧電フイルムの表面硬化処理層
４側をスチールウールで100回指圧で擦つた。そ
の後外観を調べたところ、摩擦傷などは無く、勿
論圧電性にも何等影響はなかつた。 Next, the surface hardening layer 4 side of the transparent piezoelectric film was rubbed with steel wool 100 times using finger pressure. Afterwards, the external appearance was examined, and there were no scratches from friction, and of course there was no effect on the piezoelectricity.
次いで、タツチ入力板としての耐久性を模擬し
て、透明性圧電フイルムを半径50mmの曲げ試験に
供したところ、104回後でもフイルムの外観、圧
電性共に変化がなかつた。 Next, to simulate the durability of a touch input board, the transparent piezoelectric film was subjected to a bending test with a radius of 50 mm, and even after 10 4 times, there was no change in the film's appearance or piezoelectricity.
実施例 ２
まず、実施例１と同様に、PVDF製の基材フイ
ルム１上にPVA層２および導電層３を形成した。
次いで、モノメチルポリシロキサンを主成分とす
るシラン系表面硬化剤をフイルムの片面に塗布し
て、80°Cで60分硬化させ、厚さ1μmの表面硬化処
理層４を形成した。Example 2 First, in the same manner as in Example 1, a PVA layer 2 and a conductive layer 3 were formed on a base film 1 made of PVDF.
Next, a silane surface hardening agent containing monomethylpolysiloxane as a main component was applied to one side of the film and cured at 80°C for 60 minutes to form a surface hardening layer 4 having a thickness of 1 μm.
この透明性圧電フイルムを実施例１と同様の試
験に供したところ、いずれの試験においても実施
例１と同様良好な結果が得られた。これらの結果
から、本考案の透明性圧電フイルムは、タツチ入
力板として充分に実用に耐え得ることが判明し
た。 When this transparent piezoelectric film was subjected to the same tests as in Example 1, good results as in Example 1 were obtained in all tests. From these results, it was found that the transparent piezoelectric film of the present invention can be put to practical use as a touch input board.
なお、上記実施例にあつては、片面に表面硬化
処理層を設けた透明性圧電フイルムのみを示した
が、この表面硬化処理層は両面に設けられても良
い。 In the above embodiments, only a transparent piezoelectric film having a surface hardening layer provided on one side is shown, but the surface hardening layer may be provided on both sides.
「考案の効果」
以上説明したように、本考案の透明性圧電フイ
ルムは、透明性を有する有機高分子圧電材料から
なるフイルムの両面に、ポリビニルアルコールか
らなる層を介して、ピロールの気相重合によつて
ポリピロール製の導電層が設けられ、更にそのう
ち少なくとも一方の面に表面硬化処理層が設けら
れたものなので、導電層の形成時に上記フイルム
が高温に加熱されないことから、フイルムの配向
構造が乱れることがなく、よつてフイルムの圧電
性および導電性等の電気特性が高い水準で維持さ
れるものとなる。"Effects of the Invention" As explained above, the transparent piezoelectric film of the present invention is produced by vapor-phase polymerization of pyrrole through layers of polyvinyl alcohol on both sides of the film made of a transparent organic polymeric piezoelectric material. Since the film is provided with a conductive layer made of polypyrrole and a surface hardening layer is provided on at least one side of the conductive layer, the film is not heated to high temperatures during the formation of the conductive layer, so the orientation structure of the film is There is no disturbance, and the electrical properties of the film, such as piezoelectricity and conductivity, are maintained at a high level.
また、本考案の透明性圧電フイルムは、導電層
が表面硬化処理層により保護されたものであるの
で、優れた耐摩耗性等の機械的強度が付与された
ものとなる。 Furthermore, since the transparent piezoelectric film of the present invention has a conductive layer protected by a surface hardening layer, it is endowed with mechanical strength such as excellent abrasion resistance.
図は、本考案の透明性圧電フイルムの一実施例
を示す断面図である。
１……基材フイルム、２……ポリビニルアルコ
ール層（PVA層）、３……ポリピロール層（導電
層）、４……表面硬化処理層。
The figure is a sectional view showing an embodiment of the transparent piezoelectric film of the present invention. 1...Base film, 2...Polyvinyl alcohol layer (PVA layer), 3...Polypyrrole layer (conductive layer), 4...Surface hardening treatment layer.
Claims (1)
イルムの両面に、ポリビニルアルコールからなる
層を介して気相重合により得られたドーパント添
加ポリピロールからなる導電層が設けられ、これ
ら導電層の少なくとも一方の面に表面硬化処理層
が設けられたことを特徴とする透明性圧電フイル
ム。 A conductive layer made of dopant-added polypyrrole obtained by vapor phase polymerization is provided on both sides of a film made of a transparent organic polymeric piezoelectric material through a layer made of polyvinyl alcohol, and at least one side of these conductive layers A transparent piezoelectric film characterized by having a surface hardening layer provided thereon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986022193U JPH0438539Y2 (en) | 1986-02-19 | 1986-02-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986022193U JPH0438539Y2 (en) | 1986-02-19 | 1986-02-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62135460U JPS62135460U (en) | 1987-08-26 |
| JPH0438539Y2 true JPH0438539Y2 (en) | 1992-09-09 |
Family
ID=30819342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986022193U Expired JPH0438539Y2 (en) | 1986-02-19 | 1986-02-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0438539Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102460351B (en) | 2009-06-11 | 2015-11-25 | 株式会社村田制作所 | Touch panel and touch-type input device |
| JP6338438B2 (en) * | 2014-04-30 | 2018-06-06 | 富士通株式会社 | Pressure sensitive polymer device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4849390A (en) * | 1971-10-13 | 1973-07-12 | ||
| JPS5295923A (en) * | 1976-02-09 | 1977-08-12 | Nippon Telegr & Teleph Corp <Ntt> | Input panel |
| JPS58186981A (en) * | 1982-04-26 | 1983-11-01 | Toray Ind Inc | Input/output conversion element |
-
1986
- 1986-02-19 JP JP1986022193U patent/JPH0438539Y2/ja not_active Expired
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4849390A (en) * | 1971-10-13 | 1973-07-12 | ||
| JPS5295923A (en) * | 1976-02-09 | 1977-08-12 | Nippon Telegr & Teleph Corp <Ntt> | Input panel |
| JPS58186981A (en) * | 1982-04-26 | 1983-11-01 | Toray Ind Inc | Input/output conversion element |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62135460U (en) | 1987-08-26 |
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