JP3522463B2 - Sheet-shaped pressure-sensitive resistance member - Google Patents
Sheet-shaped pressure-sensitive resistance memberInfo
- Publication number
- JP3522463B2 JP3522463B2 JP26478396A JP26478396A JP3522463B2 JP 3522463 B2 JP3522463 B2 JP 3522463B2 JP 26478396 A JP26478396 A JP 26478396A JP 26478396 A JP26478396 A JP 26478396A JP 3522463 B2 JP3522463 B2 JP 3522463B2
- Authority
- JP
- Japan
- Prior art keywords
- conductive particles
- shaped
- sheet
- needle
- conductive
- 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 - Lifetime
Links
- 239000002245 particle Substances 0.000 claims description 158
- 239000000463 material Substances 0.000 claims description 42
- 239000011347 resin Substances 0.000 claims description 37
- 229920005989 resin Polymers 0.000 claims description 37
- 239000000203 mixture Substances 0.000 claims description 19
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 claims description 18
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims description 13
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 11
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims description 11
- 229910001887 tin oxide Inorganic materials 0.000 claims description 11
- 239000012798 spherical particle Substances 0.000 claims description 8
- 239000000758 substrate Substances 0.000 claims description 5
- 238000007650 screen-printing Methods 0.000 claims description 4
- 230000035945 sensitivity Effects 0.000 description 11
- 230000005540 biological transmission Effects 0.000 description 9
- 239000002994 raw material Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 229910006404 SnO 2 Inorganic materials 0.000 description 2
- 229910010413 TiO 2 Inorganic materials 0.000 description 2
- -1 acryl Chemical group 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
Landscapes
- Non-Insulated Conductors (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Conductive Materials (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、外部からの加圧に
応じて抵抗値が変化するシート状感圧抵抗部材に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet-shaped pressure-sensitive resistance member whose resistance value changes in response to external pressure.
【０００２】[0002]
【従来の技術】シート状感圧抵抗部材（導電フィルム）
は、カーボンなどの導電性を有する素材を用いて形成さ
れ、銀材印刷などにより所望の銀製電極パターンが形成
されたシート状電極部材（電極フィルム）に接着される
ことにより、感圧抵抗フィルムを構成するもので、この
シート状感圧抵抗部材に外部から圧力がかけられること
により、圧力を受けた部分の抵抗値が変化するようにな
っている。2. Description of the Related Art Sheet-shaped pressure-sensitive resistance member (conductive film)
Is formed by using a conductive material such as carbon and is adhered to a sheet-shaped electrode member (electrode film) on which a desired silver electrode pattern is formed by silver material printing or the like to form a pressure-sensitive resistance film. When the sheet-shaped pressure-sensitive resistance member is pressured from the outside, the resistance value of the portion subjected to the pressure is changed.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、従来の
シート状感圧抵抗部材は、導電性素材（粒子）の導電方
向がシート面部に対して均一に交差する方向とならない
ので、シート表面上の抵抗値にバラツキが生じ、外部か
らの加圧に対する圧力の伝達感度が一定とならず、特
に、微小な加圧に対しては忠実にその加圧情報を得るこ
とができないという課題がある。However, in the conventional sheet-shaped pressure-sensitive resistance member, since the conductive direction of the conductive material (particles) does not uniformly intersect the sheet surface portion, the resistance on the sheet surface is reduced. There is a problem in that variations in the values occur, the sensitivity of pressure transmission to external pressure is not constant, and in particular, minute pressure information cannot be faithfully obtained.
【０００４】本発明は、このような課題に鑑み創案され
たもので、導電性粒子の導電方向がシート面部に対して
均一に交差する方向となるようにすることにより、シー
ト表面上の抵抗値のバラツキを無くし、外部からの加圧
変化を効率的に伝達して加圧情報の伝達感度を大幅に向
上できるようにした、シート状感圧抵抗部材を提供する
ことを目的とする。The present invention was devised in view of the above problems, and the resistance value on the surface of the sheet is set by making the conductive direction of the conductive particles uniformly intersect the surface of the sheet. It is an object of the present invention to provide a sheet-shaped pressure-sensitive resistance member which eliminates the variation of the above, and efficiently transmits the pressure change from the outside to significantly improve the pressure information transmission sensitivity.
【０００５】[0005]
【課題を解決するための手段】このため、請求項１記載
の本発明のシート状感圧抵抗部材は、導電方向がシート
面部に対して交差する方向となるように、針状粒子形状
を有するチタン酸カリウム粒子に酸化スズ膜を施してな
る針状導電性粒子を、球状粒子形状を有するチタン酸カ
リウム粒子からなる球状非導電性粒子の表面に密着させ
た状態で、上記の針状導電性粒子及び球状非導電性粒子
を樹脂材内に分散配置させたことを特徴としている。For this reason, the sheet-shaped pressure-sensitive resistance member of the present invention according to claim 1 has a needle-like particle shape so that the conductive direction is a direction intersecting the sheet surface portion. Needle-shaped conductive particles obtained by applying a tin oxide film to potassium titanate particles, in the state of being closely adhered to the surface of spherical non-conductive particles made of potassium titanate particles having a spherical particle shape, It is characterized in that particles and spherical non-conductive particles are dispersed and arranged in a resin material.
【０００６】また、請求項２記載の本発明のシート状感
圧抵抗部材は、請求項１記載の構成において、該針状導
電性粒子の長さが１０〜２０マイクロメータであり、該
酸化スズ膜の厚みがナノメータオーダであり、該球状非
導電性粒子の直径が数マイクロメータであることを特徴
としている。さらに、請求項３記載の本発明のシート状
感圧抵抗部材は、請求項１記載の構成において、該樹脂
材が、アクリル系ウレタン樹脂であることを特徴として
いる。According to a second aspect of the present invention, in the sheet-shaped pressure-sensitive resistance member according to the first aspect, the needle-shaped conductive particles have a length of 10 to 20 micrometers. The thickness of the film is on the order of nanometers, and the diameter of the spherical non-conductive particles is several micrometers. Furthermore, the sheet-shaped pressure-sensitive resistance member of the present invention according to claim 3 is characterized in that, in the structure according to claim 1, the resin material is an acrylic urethane resin.
【０００７】また、請求項４記載の本発明のシート状感
圧抵抗部材は、導電方向がシート面部に対して交差する
方向となるように、針状非導電性粒子全体に導電層を施
すことにより構成された針状導電性粒子を、球状非導電
性粒子の表面に密着させた状態で、上記の針状導電性粒
子及び球状非導電性粒子を樹脂材内に分散配置させたこ
とを特徴としている。 Further, in the sheet-shaped pressure-sensitive resistance member of the present invention as set forth in claim 4 , a conductive layer is formed on the whole of the acicular non-conductive particles so that the conductive direction intersects with the sheet surface.
The needle-shaped conductive particles constituted by being in contact with the surface of the spherical non-conductive particles, the needle-shaped conductive particles and the spherical non-conductive particles are dispersed in the resin material. Is characterized by .
【０００８】さらに、請求項５記載の本発明のシート状
感圧抵抗部材は、導電方向がシート面部に対して交差す
る方向となるように、針状非導電性粒子全体に導電層を
施すことにより構成された針状導電性粒子を球状非導電
性粒子の表面に密着させた状態で上記の針状導電性粒子
及び球状非導電性粒子を樹脂材内に混入させてなる針状
導電性粒子・球状非導電性粒子・樹脂混合剤を、シート
状樹脂材上に塗布することにより形成されたことを特徴
としている。Further, in the sheet-shaped pressure-sensitive resistance member of the present invention according to claim 5 , a conductive layer is provided on the entire needle-shaped non-conductive particles so that the conductive direction is a direction intersecting the sheet surface portion.
Needle-shaped conductive particles obtained by mixing the above needle-shaped conductive particles and spherical non-conductive particles in a resin material in a state in which the needle-shaped conductive particles formed by applying are adhered to the surface of the spherical non-conductive particles. It is characterized in that it is formed by applying a conductive particle / spherical non-conductive particle / resin mixture onto a sheet-shaped resin material.
【０００９】また、請求項６記載の本発明のシート状感
圧抵抗部材は、請求項５記載の構成において、該針状導
電性粒子・球状非導電性粒子・樹脂混合剤塗布面に、電
極を基板上に有するシート状電極部材が設けられたこと
特徴としている。さらに、請求項７記載の本発明のシー
ト状感圧抵抗部材は、請求項５記載の構成において、ス
クリーン印刷することにより、該針状導電性粒子・球状
非導電性粒子・樹脂混合剤が該シート状樹脂材上に塗布
されていることを特徴としている。 Further, in the sheet-shaped pressure-sensitive resistance member of the present invention according to claim 6, in the structure according to claim 5 , an electrode is provided on the coating surface of the needle-shaped conductive particles / spherical non-conductive particles / resin mixture. Is provided on the substrate. Further, in the sheet-shaped pressure-sensitive resistance member of the present invention according to claim 7 , the needle-shaped conductive particles / spherical non-conductive particles / resin mixture can be obtained by screen printing in the structure according to claim 5. It is characterized in that it is applied on a sheet-shaped resin material .
【００１０】[0010]
【発明の実施の形態】以下、図面を参照して本発明の実
施の形態を説明する。図１は本発明の一実施形態として
のシート状感圧抵抗部材を模式的に示す図で、この図１
において、１はシート状感圧抵抗部材（導電フィル
ム）、２は針状導電性粒子、３は球状非導電性粒子、４
はアクリル系ウレタン樹脂材であり、この図１からも分
かるように、針状導電性粒子２及び球状非導電性粒子３
がアクリル系ウレタン樹脂材４に混入されてシート状感
圧抵抗部材１が形成されている。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram schematically showing a sheet-shaped pressure-sensitive resistance member as an embodiment of the present invention.
1, 1 is a sheet-shaped pressure-sensitive resistance member (conductive film), 2 is needle-shaped conductive particles, 3 is spherical non-conductive particles, 4
Is an acrylic urethane resin material, and as can be seen from FIG. 1, needle-like conductive particles 2 and spherical non-conductive particles 3
Is mixed with the acrylic urethane resin material 4 to form the sheet-shaped pressure-sensitive resistance member 1.
【００１１】ここで、上記の針状導電性粒子２は、例え
ば図２に示すように、長さが１０〜２０マイクロメータ
（μｍ）の針状粒子形状を有するチタン酸カリウム粒子
（化学組成：Ｋ2 Ｏ・ＴｉＯ2 ）の表面に、図３に示す
ようにナノメータオーダの酸化スズ膜（化学組成：Ｓｎ
Ｏ2 ・Ｓｂ2 Ｏ5 ）５を施したもので、Ｋ2 Ｏ・ＴｉＯ
2 ／ＳｎＯ2 ・Ｓｂ2 Ｏ5 という化学組成を有してい
る。なお、図３は図２におけるＡ−Ａ矢視断面図であ
る。Here, the needle-shaped conductive particles 2 are, for example, as shown in FIG. 2, potassium titanate particles having a needle-shaped particle shape having a length of 10 to 20 micrometers (μm) (chemical composition: As shown in FIG. 3, a nanometer-order tin oxide film (chemical composition: Sn) is formed on the surface of K 2 O.TiO 2 .
O 2 · Sb 2 O 5 ) 5 applied, K 2 O · TiO
It has a chemical composition of 2 / SnO 2 .Sb 2 O 5 . Note that FIG. 3 is a sectional view taken along the line AA in FIG.
【００１２】つまり、本実施形態のシート状感圧抵抗部
材１は、非導電性のチタン酸カリウム粒子に導電性の酸
化スズ膜５からなる導電層を施すことにより導電性をも
たせた針状導電性粒子２を、アクリル系ウレタン樹脂材
４と任意の配合率で配合することにより、任意の抵抗値
をもたせることができるようになっている。例えば、上
記の針状導電性粒子２の配合率を約３０％とすると、本
部材１は約８×１０4（Ω）の抵抗値を有するようにな
ることが実験的に分かっており、上記針状導電性粒子２
の配合率を増減することにより、その抵抗値を増減させ
ることができる。That is, the sheet-shaped pressure-sensitive resistance member 1 of the present embodiment is a needle-shaped conductive member having conductivity by applying a conductive layer made of a conductive tin oxide film 5 to non-conductive potassium titanate particles. By mixing the functional particles 2 with the acrylic urethane resin material 4 at an arbitrary mixing ratio, it is possible to give an arbitrary resistance value. For example, it has been empirically known that when the compounding ratio of the needle-shaped conductive particles 2 is about 30%, the member 1 has a resistance value of about 8 × 10 4 (Ω). Needle-shaped conductive particles 2
The resistance value can be increased or decreased by increasing or decreasing the compounding ratio of.
【００１３】なお、本実施形態において、針状導電性粒
子２，球状非導電性粒子３を混入する樹脂材としてアク
リル系ウレタン樹脂材４を用いるのは、それぞれチタン
酸カリウム粒子を原料とする針状導電性粒子２及び球状
非導電性粒子３との配合相性が良く、極めて容易に、各
粒子２，３を配合できるためであるが、勿論、他の樹脂
材を用いることも可能である。In the present embodiment, the acrylic urethane resin material 4 is used as the resin material in which the needle-shaped conductive particles 2 and the spherical non-conductive particles 3 are mixed. This is because the compatibility with the spherical conductive particles 2 and the spherical non-conductive particles 3 is good and the particles 2 and 3 can be mixed very easily. Of course, other resin materials can be used.
【００１４】一方、上記の球状非導電性粒子３は、球状
粒子形状を有するチタン酸カリウム粒子からなり、本実
施形態では、例えば図４に示すように、その直径が数マ
イクロメータとなっている。なお、上記球状粒子形状の
チタン酸カリウム粒子は、上記針状粒子形状のチタン酸
カリウム粒子を真空破壊することにより生成され、その
化学組成は上記針状粒子形状のチタン酸カリウム粒子と
同様である。On the other hand, the spherical non-conductive particles 3 are made of potassium titanate particles having a spherical particle shape, and in this embodiment, as shown in FIG. 4, for example, the diameter thereof is several micrometers. . The spherical particle-shaped potassium titanate particles are produced by vacuum breaking the acicular particle-shaped potassium titanate particles, and the chemical composition thereof is the same as that of the acicular particle-shaped potassium titanate particles. .
【００１５】そして、この球状非導電性粒子３と上記の
針状導電性粒子２とをアクリル系ウレタン樹脂材４に混
入して練ると、針状導電性粒子２及び球状非導電性粒子
３がいずれもチタン酸カリウムを原料としていることか
ら互いの相性が良いので、例えば図５に模式的に示すよ
うに、球状非導電性粒子３の表面に針状導電性粒子２が
確実に密着した状態となる。When the spherical non-conductive particles 3 and the needle-shaped conductive particles 2 are mixed in an acrylic urethane resin material 4 and kneaded, the needle-shaped conductive particles 2 and the spherical non-conductive particles 3 are formed. Since both of them are made of potassium titanate as a raw material, they are compatible with each other. For example, as shown schematically in FIG. 5, the needle-shaped conductive particles 2 are surely adhered to the surface of the spherical non-conductive particles 3. Becomes
【００１６】このとき、上述したように針状導電性粒子
２の長さが１０〜２０マイクロメータであり、酸化スズ
膜５の厚みがナノメータオーダであり、球状非導電性粒
子３の直径が数マイクロメータであるので、基本形が長
方形である針状導電性粒子２は、その先端が互いに接触
しないように球状非導電性粒子３を介して最適な間隔で
分散配列される。At this time, as described above, the length of the needle-shaped conductive particles 2 is 10 to 20 micrometers, the thickness of the tin oxide film 5 is on the order of nanometers, and the diameter of the spherical non-conductive particles 3 is several. Since it is a micrometer, the needle-shaped conductive particles 2 having a rectangular basic shape are dispersed and arranged at optimal intervals via the spherical non-conductive particles 3 so that their tips do not contact each other.
【００１７】この結果、針状導電性粒子２は、図１に模
式的に示すように、その導電方向がシート面部に対して
交差（直交）する方向となるように、アクリル系ウレタ
ン樹脂材４内において均一に分散配置される。つまり、
本実施形態のシート状感圧抵抗部材１は、導電方向がシ
ート面部に対して交差する方向となるように、針状粒子
形状を有するチタン酸カリウム粒子に酸化スズ膜５を施
してなる針状導電性粒子２を、球状粒子形状を有するチ
タン酸カリウム粒子からなる球状非導電性粒子３の表面
に密着させた状態で、針状導電性粒子２及び球状非導電
性粒子３を樹脂材４内に分散配置させているのである。As a result, as shown in FIG. 1, the acicular conductive particles 2 have the acryl-based urethane resin material 4 such that the conductive direction thereof intersects (orthogonally intersects) the sheet surface portion. It is evenly distributed inside. That is,
The sheet-shaped pressure-sensitive resistance member 1 of the present embodiment has a needle-shaped shape obtained by applying a tin oxide film 5 to potassium titanate particles having a needle-shaped particle shape so that the conductive direction intersects with the sheet surface portion. The conductive particles 2 are adhered to the surface of the spherical non-conductive particles 3 made of potassium titanate particles having a spherical particle shape, and the needle-shaped conductive particles 2 and the spherical non-conductive particles 3 are placed inside the resin material 4. It is distributed and arranged.
【００１８】従って、シート表面上の抵抗値のバラツキ
を無くして安定した抵抗値を得ることができ、シート面
部に対する外部からの微小な加圧による加圧情報さえも
極めて効率的に伝達することができるようになり、加圧
情報の伝達感度が大幅に向上する。また、このとき、針
状導電性粒子２は球状非導電性粒子３を介してアクリル
系ウレタン樹脂材４内において最適な間隔で分散配置さ
れているので、シート面部への加圧に対する加圧情報の
伝達感度がさらに大幅に向上する。Therefore, it is possible to obtain a stable resistance value by eliminating the variation in the resistance value on the surface of the sheet, and it is possible to transmit even the pressure information by the minute pressure from the outside to the sheet surface extremely efficiently. As a result, the transmission sensitivity of the pressure information is significantly improved. Further, at this time, since the needle-shaped conductive particles 2 are dispersed and arranged in the acrylic urethane resin material 4 through the spherical non-conductive particles 3 at an optimum interval, the pressure information for pressing the sheet surface portion is obtained. The transmission sensitivity of is greatly improved.
【００１９】ところで、上述のシート状感圧抵抗部材１
は、例えば図６に示すように、上記の針状導電性粒子２
を球状非導電性粒子３の表面に密着させた状態で針状導
電性粒子２及び球状非導電性粒子３をアクリル系ウレタ
ン樹脂材４内に混入させてなる混合剤（針状導電性粒子
・球状非導電性粒子・樹脂混合剤）を、ポリエチレンテ
レフタラート（ＰＥＴ）やＰＥＳ，ＰＥＩ，ＰＰＩ等の
フィルム材（シート状樹脂材）６に均一の厚さで塗布す
ることによって導電層１１を形成しても、塗布面に対し
て交差する方向に導電性をもたせることができる。By the way, the above-mentioned sheet-shaped pressure-sensitive resistance member 1 is used.
Is, for example, as shown in FIG.
A mixture of needle-shaped conductive particles 2 and spherical non-conductive particles 3 mixed in the acrylic urethane resin material 4 in a state where the particles are adhered to the surface of the spherical non-conductive particles 3. A conductive layer 11 is formed by applying spherical non-conductive particles / resin mixture) to a film material (sheet-shaped resin material) 6 such as polyethylene terephthalate (PET), PES, PEI, PPI, etc., with a uniform thickness. However, it is possible to give conductivity in the direction intersecting with the coated surface.
【００２０】従って、この場合は、アクリル系ウレタン
樹脂材４内に針状導電性粒子２及び球状非導電性粒子３
を混入する場合に比べて、極めて単純な工程で、上記の
伝達感度を維持したまま、本シート状感圧抵抗部材１を
形成することができる。そして、上述のごとく混合剤を
塗布されて形成された本部材１の混合剤塗布面（導電層
１１、もしくは、図１に示す部材１の一方の面）に、例
えば図７に示すように、電極７を基板８上に有するシー
ト状電極部材（電極フィルム）９を接着すれば（設けれ
ば）、感圧フィルム１０が形成される。これにより、こ
の感圧フィルム１０では、シート状感圧抵抗部材１への
微小な加圧に対してもその加圧情報が効率的にシート状
電極部材９に伝達されるので、針状導電性粒子２と電極
７との接触面積が顕著に変化する。Therefore, in this case, the acicular urethane resin material 4 has the needle-shaped conductive particles 2 and the spherical non-conductive particles 3 therein.
The sheet-shaped pressure-sensitive resistance member 1 can be formed while maintaining the above-mentioned transmission sensitivity in an extremely simple process as compared with the case of mixing. Then, on the mixed agent application surface (the conductive layer 11 or one surface of the member 1 shown in FIG. 1) of the main member 1 formed by applying the mixed agent as described above, for example, as shown in FIG. The pressure-sensitive film 10 is formed by adhering (providing) a sheet-shaped electrode member (electrode film) 9 having the electrode 7 on the substrate 8. As a result, in the pressure-sensitive film 10, the pressure information is efficiently transmitted to the sheet-shaped electrode member 9 even if a minute pressure is applied to the sheet-shaped pressure-sensitive resistance member 1. The contact area between the particles 2 and the electrode 7 significantly changes.
【００２１】従って、本部材１とシート状電極部材９と
で決まる抵抗値に変化が生じ、極めて高精度に、本部材
１に対する加圧情報を取り出すことができるようにな
る。なお、上記混合剤は、スクリーン印刷によりフィル
ム材６上に塗布すれば、極めて容易に、上記混合剤をフ
ィルム材６上に均一の厚さで塗布することができるの
で、さらに加圧情報の伝達感度を大幅に向上させること
ができる。Therefore, the resistance value determined by the main member 1 and the sheet-shaped electrode member 9 changes, and the pressure information for the main member 1 can be retrieved with extremely high accuracy. It should be noted that if the mixture is applied on the film material 6 by screen printing, the mixture can be applied on the film material 6 with a uniform thickness, so that the pressure information is further transmitted. The sensitivity can be significantly improved.
【００２２】以上のように本実施形態のシート状感圧抵
抗部材１によれば、導電方向がシート面部に対して交差
する方向となるように、針状導電性粒子２を、球状非導
電性粒子３の表面に密着させた状態で、針状導電性粒子
２及び球状非導電性粒子３を樹脂材内に分散配置させる
ので、上記針状導電性粒子をその導電方向がシート面部
に対して交差するように樹脂材内に均一に配置させるこ
とができる。As described above, according to the sheet-shaped pressure-sensitive resistance member 1 of the present embodiment, the needle-shaped conductive particles 2 are spherical non-conductive so that the conductive direction intersects with the sheet surface. Since the needle-shaped conductive particles 2 and the spherical non-conductive particles 3 are dispersed and arranged in the resin material while being in close contact with the surface of the particles 3, the conductive direction of the needle-shaped conductive particles is relative to the sheet surface portion. They can be evenly arranged in the resin material so that they intersect.
【００２３】従って、シート表面上の抵抗値のバラツキ
を無くして安定した抵抗値を得ることができ、シート面
部に対する外部からの微小な加圧による加圧情報の変化
さえも極めて効率的に伝達することができ、加圧情報の
伝達感度を大幅に向上させることができる。なお、本実
施形態では、針状導電性粒子２が針状粒子形状を有する
チタン酸カリウムに酸化スズ膜５を施してなり、球状非
導電性粒子３が球状粒子形状を有するチタン酸カリウム
粒子からなっているが、本発明はこれに限定されず、チ
タン酸カリウム以外の原材料（非導電性粒子）を用いて
針状導電性粒子２及び球状非導電性粒子３を形成しても
よい。Therefore, it is possible to obtain a stable resistance value by eliminating the variation in the resistance value on the surface of the sheet, and to transmit even a change in the pressure information due to a minute pressure from the outside to the sheet surface extremely efficiently. Therefore, the transmission sensitivity of the pressure information can be significantly improved. In the present embodiment, the needle-shaped conductive particles 2 are obtained by applying the tin oxide film 5 to potassium titanate having a needle-shaped particle shape, and the spherical non-conductive particles 3 are formed from potassium titanate particles having a spherical particle shape. However, the present invention is not limited to this, and the needle-shaped conductive particles 2 and the spherical non-conductive particles 3 may be formed using a raw material (non-conductive particles) other than potassium titanate.
【００２４】そして、この際、針状導電性粒子２は、針
状非導電性粒子全体に導電層を施すことによって構成す
ることができるので、針状導電性粒子２として用いるこ
とのできる原材料の選択幅が広がり、本部材１の形成上
の柔軟性にも大いに寄与することとなる。At this time, since the needle-shaped conductive particles 2 can be formed by applying a conductive layer to the entire needle-shaped non-conductive particles, it is possible to use a raw material that can be used as the needle-shaped conductive particles 2. The selection range is widened, which greatly contributes to flexibility in forming the member 1.
【００２５】[0025]
【発明の効果】以上詳述したように、本発明のシート状
感圧抵抗部材によれば、導電方向がシート面部に対して
交差する方向となるように、針状導電性粒子を、球状非
導電性粒子の表面に密着させた状態で、上記の針状導電
性粒子及び球状非導電性粒子を樹脂材内に分散配置させ
るので、上記針状導電性粒子をその導電方向がシート面
部に対して交差するように樹脂材内に均一に配置させる
ことができる。従って、シート表面上の抵抗値のバラツ
キを無くして安定した抵抗値を得ることができ、シート
面部に対する外部からの微小な加圧による加圧情報の変
化さえも極めて効率的に伝達することができるようにな
り、加圧情報の伝達感度が大幅に向上する。As described above in detail, according to the sheet-shaped pressure-sensitive resistance member of the present invention, the needle-shaped conductive particles are formed into spherical non-spherical particles so that the conductive direction intersects with the sheet surface. In the state of being in close contact with the surface of the conductive particles, since the needle-shaped conductive particles and the spherical non-conductive particles are dispersed and arranged in the resin material, the conductive direction of the needle-shaped conductive particles with respect to the sheet surface portion. Can be evenly arranged in the resin material so as to intersect with each other. Therefore, it is possible to obtain a stable resistance value by eliminating the variation in the resistance value on the sheet surface, and it is possible to very efficiently transmit even a change in pressure information due to a minute pressure from the outside to the sheet surface portion. As a result, the transmission sensitivity of the pressure information is significantly improved.
【００２６】さらに、本発明のシート状感圧抵抗部材に
よれば、上記の針状導電性粒子が針状粒子形状を有する
チタン酸カリウムに酸化スズ膜を施してなり、上記の球
状非導電性粒子が球状粒子形状を有するチタン酸カリウ
ム粒子からなるので、上記針状導電性粒子及び球状非導
電性粒子の互いの相性が非常に良く、確実に、針状導電
性粒子を球状非導電性粒子の表面に密着させることがで
きる。Further , according to the sheet-shaped pressure-sensitive resistance member of the present invention, the above needle-shaped conductive particles are obtained by applying a tin oxide film to potassium titanate having a needle-shaped particle shape, and the above-mentioned spherical non-conductive particles. Since the particles are composed of potassium titanate particles having a spherical particle shape, the mutual compatibility of the needle-shaped conductive particles and the spherical non-conductive particles is very good, and reliably, the needle-shaped conductive particles are spherical non-conductive particles. Can be adhered to the surface of.
【００２７】また、本発明のシート状感圧抵抗部材によ
れば、上記の針状導電性粒子の長さを１０〜２０マイク
ロメータ、上記の酸化スズ膜の厚みをナノメータオー
ダ、上記の球状非導電性粒子の直径を数マイクロメータ
とすることにより、上記針状導電性粒子を最適な間隔で
分散配置することができるので、シート面部への加圧に
対する加圧情報の伝達感度をさらに大幅に向上させるこ
とができる。According to the sheet-shaped pressure-sensitive resistance member of the present invention, the needle-shaped conductive particles have a length of 10 to 20 micrometers, the tin oxide film has a thickness on the order of nanometers, and the spherical non-spherical particles have a spherical shape. By setting the diameter of the conductive particles to several micrometers, the needle-shaped conductive particles can be dispersed and arranged at an optimum interval, so that the sensitivity of transmitting pressure information to the pressure on the sheet surface can be further increased. Can be improved.
【００２８】さらに、本発明のシート状感圧抵抗部材に
よれば、上記の樹脂材として、上記針状導電性粒子及び
球状非導電性粒子と配合相性の良いアクリル系ウレタン
樹脂を用いることにより、極めて容易に、上記針状導電
性粒子及び球状非導電性粒子を樹脂材内に配合すること
ができる。また、本発明のシート状感圧抵抗部材によれ
ば、上記の針状導電性粒子は、針状非導電性粒子全体に
導電層を施すことにより構成されるので、針状導電性粒
子として用いることのできる原材料の選択幅が広がり、
本部材形成上の柔軟性にも大いに寄与する。Further, according to the sheet-shaped pressure-sensitive resistance member of the present invention, by using as the resin material, an acrylic urethane resin having a good compatibility with the acicular conductive particles and the spherical non-conductive particles, The needle-shaped conductive particles and the spherical non-conductive particles can be blended in the resin material very easily. Further, according to the sheet-shaped pressure-sensitive resistance member of the present invention, since the above-mentioned needle-shaped conductive particles are formed by applying a conductive layer to the entire needle-shaped non-conductive particles, they are used as needle-shaped conductive particles. The selection range of raw materials that can be
It also greatly contributes to the flexibility in forming this member.
【００２９】さらに、本発明のシート状感圧抵抗部材に
よれば、導電方向がシート面部に対して交差する方向と
なるように、針状導電性粒子を球状非導電性粒子の表面
に密着させた状態で上記の針状導電性粒子及び球状非導
電性粒子を樹脂材内に混入させてなる針状導電性粒子・
球状非導電性粒子・樹脂混合剤を、シート状樹脂材上に
塗布することにより形成されるので、極めて単純な工程
で、上記の伝達感度を維持したまま、本部材を形成する
ことができる。Further, according to the sheet-shaped pressure-sensitive resistance member of the present invention, the needle-shaped conductive particles are brought into close contact with the surface of the spherical non-conductive particles so that the conductive direction intersects with the sheet surface portion. Needle-shaped conductive particles obtained by mixing the above-mentioned needle-shaped conductive particles and spherical non-conductive particles in a resin material
Since this is formed by applying the spherical non-conductive particle / resin mixture onto the sheet-shaped resin material, the present member can be formed in a very simple process while maintaining the above-mentioned transmission sensitivity.
【００３０】また、本発明のシート状感圧抵抗部材によ
れば、上記の針状導電性粒子・球状非導電性粒子・樹脂
混合剤塗布面に、電極を基板上に有するシート状電極部
材を設ければ、微小な加圧に対してもその加圧情報が効
率的にシート状電極部材に伝達されるので、上記の針状
導電性粒子と電極との接触面積が顕著に変化する。これ
により、本部材とシート状電極部材とで決まる抵抗値に
変化が生じ、極めて高精度に、本部材に対する加圧情報
を取り出すことができるようになる。Further, according to the sheet-shaped pressure-sensitive resistance member of the present invention, a sheet-shaped electrode member having an electrode on the substrate is coated on the needle-shaped conductive particles / spherical non-conductive particles / resin mixture mixture coating surface. If provided, the pressure information can be efficiently transmitted to the sheet-like electrode member even with a slight pressure, so that the contact area between the needle-shaped conductive particles and the electrode significantly changes. As a result, the resistance value determined by the main member and the sheet-shaped electrode member changes, and the pressure information for the main member can be retrieved with extremely high accuracy.
【００３１】さらに、本発明のシート状感圧抵抗部材に
よれば、スクリーン印刷することにより、上記の針状導
電性粒子・球状非導電性粒子・樹脂混合剤を上記シート
状樹脂材上に塗布すれば、極めて容易に、上記混合剤を
上記シート状樹脂材上に均一の厚さで塗布することがで
きるので、さらに加圧に対する伝達感度を大幅に向上さ
せることができる。Further , according to the sheet-shaped pressure-sensitive resistance member of the present invention, the above-mentioned needle-shaped conductive particles / spherical non-conductive particles / resin mixture is applied onto the above-mentioned sheet-shaped resin material by screen printing. By doing so, the mixture can be applied very easily to the sheet-shaped resin material with a uniform thickness, so that the transmission sensitivity to pressure can be further greatly improved.
【図１】本発明の一実施形態としてのシート状感圧抵抗
部材を模式的に示す図である。FIG. 1 is a diagram schematically showing a sheet-shaped pressure-sensitive resistance member as an embodiment of the present invention.
【図２】本実施形態における針状導電性粒子の模式的外
観図である。FIG. 2 is a schematic external view of needle-shaped conductive particles according to the present embodiment.
【図３】図２におけるＡ−Ａ矢視断面図である。3 is a cross-sectional view taken along the line AA in FIG.
【図４】本実施形態における球状非導電性粒子の模式的
外観図である。FIG. 4 is a schematic external view of spherical non-conductive particles in the present embodiment.
【図５】本実施形態における針状導電性粒子と球状非導
電性粒子との密着状態を模式的に示す図である。FIG. 5 is a diagram schematically showing a contact state between needle-shaped conductive particles and spherical non-conductive particles in the present embodiment.
【図６】本実施形態のシート状感圧抵抗部材の他の形成
例を説明するための模式図である。FIG. 6 is a schematic view for explaining another example of forming the sheet-shaped pressure-sensitive resistance member of the present embodiment.
【図７】本実施形態のシート状感圧抵抗部材を用いて形
成される感圧フィルムの模式図である。FIG. 7 is a schematic view of a pressure-sensitive film formed using the sheet-shaped pressure-sensitive resistance member of this embodiment.
１ シート状感圧抵抗部材（導電フィルム）
２ 針状導電性粒子（Ｋ2 Ｏ・ＴｉＯ2 ／ＳｎＯ2 ・Ｓ
ｂ2 Ｏ5 ）
３ 球状非導電性粒子
４ アクリル系ウレタン樹脂材
５ 酸化スズ膜（導電層）
６ フィルム材（シート状樹脂材）
７ 電極
８ 基板
９ シート状電極部材（電極フィルム）
１０ 感圧フィルム
１１ 導電層1 Sheet-shaped pressure-sensitive resistance member (conductive film) 2 Needle-shaped conductive particles (K 2 O ・ TiO 2 / SnO 2・ S)
b 2 O 5 ) 3 Spherical non-conductive particles 4 Acrylic urethane resin material 5 Tin oxide film (conductive layer) 6 Film material (sheet resin material) 7 Electrode 8 Substrate 9 Sheet electrode member (electrode film) 10 Pressure sensitive Film 11 Conductive layer
Claims (7)
方向となるように、針状粒子形状を有するチタン酸カリ
ウム粒子に酸化スズ膜を施してなる針状導電性粒子を、
球状粒子形状を有するチタン酸カリウム粒子からなる球
状非導電性粒子の表面に密着させた状態で、 上記の針状導電性粒子及び球状非導電性粒子を樹脂材内
に分散配置させたことを特徴とする、シート状感圧抵抗
部材。1. A needle-shaped conductive particle obtained by applying a tin oxide film to a potassium titanate particle having a needle-shaped particle shape so that a conductive direction is a direction intersecting a sheet surface portion,
The needle-shaped conductive particles and the spherical non-conductive particles described above are dispersed and arranged in a resin material in a state of being in close contact with the surface of the spherical non-conductive particles made of potassium titanate particles having a spherical particle shape. A sheet-shaped pressure-sensitive resistance member.
イクロメータであり、該酸化スズ膜の厚みがナノメータ
オーダであり、該球状非導電性粒子の直径が数マイクロ
メータであることを特徴とする、請求項１記載のシート
状感圧抵抗部材。2. The needle-shaped conductive particles have a length of 10 to 20 micrometers, the tin oxide film has a thickness on the order of nanometers, and the spherical non-conductive particles have a diameter of several micrometers. The sheet-shaped pressure-sensitive resistance member according to claim 1.
あることを特徴とする、請求項１記載のシート状感圧抵
抗部材。3. The sheet-shaped pressure-sensitive resistance member according to claim 1, wherein the resin material is an acrylic urethane resin.
方向となるように、針状非導電性粒子全体に導電層を施
すことにより構成された針状導電性粒子を、球状非導電
性粒子の表面に密着させた状態で、 上記の針状導電性粒子及び球状非導電性粒子を樹脂材内
に分散配置させたことを特徴とする、シート状感圧抵抗
部材。 4. A conductive layer is applied to the whole of the acicular non-conductive particles so that the conductive direction intersects with the sheet surface.
The needle-shaped conductive particles constituted by being placed in close contact with the surface of the spherical non-conductive particles, the needle-shaped conductive particles and the spherical non-conductive particles are dispersed in the resin material. wherein the sheet-shaped pressure sensitive resistive member.
方向となるように、針状非導電性粒子全体に導電層を施
すことにより構成された針状導電性粒子を球状非導電性
粒子の表面に密着させた状態で上記の針状導電性粒子及
び球状非導電性粒子を樹脂材内に混入させてなる針状導
電性粒子・球状非導電性粒子・樹脂混合剤を、シート状
樹脂材上に塗布することにより形成されたことを特徴と
する、シート状感圧抵抗部材。5. A conductive layer is applied to the whole of the acicular non-conductive particles so that the conductive direction intersects the sheet surface.
Needle-like conductive to the configured acicular conductive particles comprising a spherical above while being in close contact with the surface of the non-conductive particles acicular conductive particles and spherical non-conductive particles are mixed into the resin material by Succoth A sheet-shaped pressure-sensitive resistance member, characterized in that it is formed by applying a conductive particle / spherical non-conductive particle / resin mixture onto a sheet-shaped resin material.
樹脂混合剤塗布面に、電極を基板上に有するシート状電
極部材が設けられたことを特徴とする、請求項５記載の
シート状感圧抵抗部材。6. The needle-shaped conductive particles, spherical non-conductive particles,
The sheet-shaped pressure-sensitive resistance member according to claim 5 , wherein a sheet-shaped electrode member having an electrode on a substrate is provided on the resin mixture application surface.
導電性粒子・球状非導電性粒子・樹脂混合剤が該シート
状樹脂材上に塗布されていることを特徴とする、請求項
５記載のシート状感圧抵抗部材。 7. The sheet-shaped resin material is coated with the needle-shaped conductive particles / spherical non-conductive particles / resin mixture by screen printing.
5. The sheet-shaped pressure-sensitive resistance member described in 5 .
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26478396A JP3522463B2 (en) | 1996-10-04 | 1996-10-04 | Sheet-shaped pressure-sensitive resistance member |
| US08/827,090 US5997996A (en) | 1996-03-27 | 1997-03-27 | Sheet-like pressure-sensitive resistance member having electrodes, method of making the same, and sheet-like pressure-sensitive resistance member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26478396A JP3522463B2 (en) | 1996-10-04 | 1996-10-04 | Sheet-shaped pressure-sensitive resistance member |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10112219A JPH10112219A (en) | 1998-04-28 |
| JP3522463B2 true JP3522463B2 (en) | 2004-04-26 |
Family
ID=17408140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26478396A Expired - Lifetime JP3522463B2 (en) | 1996-03-27 | 1996-10-04 | Sheet-shaped pressure-sensitive resistance member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3522463B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008258110A (en) * | 2007-04-09 | 2008-10-23 | Matsushita Electric Ind Co Ltd | Battery pack |
| EP3154116A1 (en) * | 2015-10-09 | 2017-04-12 | Lithium Energy and Power GmbH & Co. KG | Device for increasing the security when using battery systems |
| DE102016117441A1 (en) * | 2016-09-16 | 2018-03-22 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Traction battery and vehicle with such |
-
1996
- 1996-10-04 JP JP26478396A patent/JP3522463B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10112219A (en) | 1998-04-28 |
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