JP2011086191A - Electronic apparatus - Google Patents

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JP2011086191A
JP2011086191A JP2009239622A JP2009239622A JP2011086191A JP 2011086191 A JP2011086191 A JP 2011086191A JP 2009239622 A JP2009239622 A JP 2009239622A JP 2009239622 A JP2009239622 A JP 2009239622A JP 2011086191 A JP2011086191 A JP 2011086191A
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electronic device
electrode
elastic
unit
pressure
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Hiroto Kawaguchi
裕人 川口
Hiroshi Akama
博 赤間
Ryota Kitamura
亮太 北村
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Sony Corp
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Sony Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic apparatus including a pressure sensor, allowing suppression of variation of sensitivity of press detection in an individual product. <P>SOLUTION: When storing a touch panel part 50, a display panel part 30, and a pressure sensor part 60 between a main plate part 11 of a first casing part 10 and a main plate part 22 of a first part 21 of a second casing part 20, an elastic part 62 of the pressure sensor part 60 is precompressed. By varying a precompression amount of the elastic part 62 in the individual electronic apparatus 1, a distance between electrodes 61b, 63b in an initial state ( before press force input) in the individual electronic apparatus 1 is set constant. Thereby, variation of the inter-electrode distance is absorbed by the precompressed elastic part 62, and as a result, the variation of the sensitivity to press force in the individual electronic apparatus 1 is suppressed. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、押圧力に応じて静電容量が変化する感圧センサを備える電子機器に関する。   The present invention relates to an electronic device including a pressure-sensitive sensor whose capacitance changes according to a pressing force.

1組の電極を備え、押圧力等の外部からの力を受けて電極間の距離を変化させることで電極間の距離に応じて静電容量を変化させ、この静電容量を検出可能な電子機器が提案されている(例えば、特許文献1参照。)。特許文献1の力検知タッチパッドにおいて、ユーザからの押圧力を受けるタッチ面の底部と筐体部材とには、それぞれキャパシタプレートが設けられる。タッチ面側のキャパシタプレートと筐体部材側のキャパシタプレートとは、空間を介して互いに対向する。ユーザが指等によりタッチ面を押圧すると、押圧されたタッチ面側のキャパシタプレートが筐体部材側のキャパシタプレートに接近する方向に移動し、タッチ面に加えられた押圧力に応じてキャパシタプレート間の距離が変化する。このキャパシタプレート間の距離に応じて静電容量が変化し、電気回路によりこの静電容量が検出される。   An electron that includes a pair of electrodes, changes the capacitance according to the distance between the electrodes by receiving an external force such as a pressing force, and can detect the capacitance. Devices have been proposed (see, for example, Patent Document 1). In the force detection touchpad of Patent Document 1, capacitor plates are provided on the bottom portion of the touch surface that receives a pressing force from the user and the housing member, respectively. The capacitor plate on the touch surface side and the capacitor plate on the housing member side face each other through a space. When the user presses the touch surface with a finger or the like, the pressed capacitor plate on the touch surface moves in a direction approaching the capacitor plate on the housing member side, and the capacitor plate is moved according to the pressing force applied to the touch surface. The distance of changes. The capacitance changes according to the distance between the capacitor plates, and the capacitance is detected by an electric circuit.

特開平10−198503号公報(段落[0033]、図2)JP-A-10-198503 (paragraph [0033], FIG. 2)

特許文献1の力検知タッチパッドにおいて、一方のキャパシタプレートが設けられるタッチ面は、スプリングにより筐体部材に支持されている。一方、一般に、電子機器を構成する各部材は、それぞれ固有の公差内で寸法にバラツキをもつ。例えばタッチ面やスプリング等の大きさや特性にバラツキが存在すると、個々の製品によってタッチ面の自重等によるスプリングの撓み量にバラツキが生じるおそれがある。これにより、個々の製品によってキャパシタプレート間の距離にバラツキが生じ、その結果、個々の製品によって押圧検出の感度にもバラツキが生じるおそれがある。   In the force detection touch pad of Patent Document 1, the touch surface on which one capacitor plate is provided is supported on the housing member by a spring. On the other hand, in general, each member constituting the electronic device has a variation in size within its own tolerance. For example, if there are variations in the size and characteristics of the touch surface, the spring, etc., there is a possibility that the amount of spring deflection due to the weight of the touch surface varies depending on the individual product. As a result, the distance between the capacitor plates varies among individual products, and as a result, the sensitivity of pressure detection may vary depending on the individual products.

以上のような事情に鑑み、本発明の目的は、押圧検出の感度のバラツキを抑えることのできる感圧センサを備える電子機器を提供することにある。   In view of the circumstances as described above, an object of the present invention is to provide an electronic device including a pressure-sensitive sensor that can suppress variations in sensitivity of pressing detection.

上記目的を達成するため、本発明の一形態に係る電子機器は、第1の筐体部と、パネルモジュールと、感圧センサ部と、第2の筐体部とを有する。
上記第1の筐体部は、窓部と、上記窓部の周囲に設けられた第1の係合部とを有する。
上記パネルモジュールは、上記窓部から露出する入力操作面と、上記入力操作面の周縁部に設けられ、上記第1の筐体部の上記第1の係合部に係合可能な第2の係合部とを有する。
上記感圧センサ部は、第1の弾性部と、上記入力操作面に直交する第1の方向に関して上記パネルモジュールと対向する第1の電極と、上記第1の弾性部を挟んで上記第1の電極と対向する第2の電極とを有し、上記入力操作面に入力される押圧力を上記第1の電極及び上記第2の電極間の静電容量の変化として検出する。
上記第2の筐体部は、上記第2の電極と対向する支持部を有し、上記パネルモジュールと上記支持部との間で上記第1の弾性部を上記第1の方向に第1の圧縮量で圧縮させた第1の状態で上記第1の筐体部に固定される。
In order to achieve the above object, an electronic device according to an embodiment of the present invention includes a first housing portion, a panel module, a pressure-sensitive sensor portion, and a second housing portion.
The first housing part includes a window part and a first engaging part provided around the window part.
The panel module is provided at an input operation surface exposed from the window portion and a peripheral portion of the input operation surface, and is capable of engaging with the first engagement portion of the first housing portion. And an engaging portion.
The pressure-sensitive sensor unit includes a first elastic part, a first electrode facing the panel module in a first direction orthogonal to the input operation surface, and the first elastic part sandwiching the first elastic part. And a second electrode opposite to the first electrode, and a pressing force input to the input operation surface is detected as a change in capacitance between the first electrode and the second electrode.
The second casing portion has a support portion facing the second electrode, and the first elastic portion is arranged in the first direction between the panel module and the support portion. The first casing is fixed in the first state compressed by the compression amount.

上記電子機器によれば、感圧センサ部において、第1の電極は第1の方向でパネルモジュールと対向し、第2の電極は支持部に対向する。第1の電極と第2の電極との間には、第1の方向に第1の圧縮量で圧縮された状態で第1の弾性部が設けられる。この圧縮された第1の弾性部は、パネルモジュールと支持部との間で第1の電極と第2の電極とを弾性的に支持して、第1の電極と第2の電極との距離のバラツキを吸収する。また、第1の弾性部の圧縮量によって第1及び第2の電極間の距離が調整可能となる。これにより、個々の電子機器における押圧力に対する感度の個体差を抑えることができる。   According to the electronic device, in the pressure-sensitive sensor unit, the first electrode faces the panel module in the first direction, and the second electrode faces the support unit. A first elastic portion is provided between the first electrode and the second electrode in a state compressed in the first direction by the first compression amount. The compressed first elastic portion elastically supports the first electrode and the second electrode between the panel module and the support portion, and the distance between the first electrode and the second electrode. Absorbs the variation. Further, the distance between the first and second electrodes can be adjusted by the compression amount of the first elastic portion. Thereby, the individual difference of the sensitivity with respect to the pressing force in each electronic device can be suppressed.

上記電子機器において、上記パネルモジュールは、上記入力操作面に対する上記押圧力の入力座標を検出するタッチパネル部と、上記タッチパネル部に重ね合わせられ、上記第2の筐体の上記支持部に対向する表示パネル部とを有してもよい。   In the electronic apparatus, the panel module includes a touch panel unit that detects an input coordinate of the pressing force with respect to the input operation surface, and a display that is superimposed on the touch panel unit and faces the support unit of the second casing. You may have a panel part.

上記電子機器によれば、入力操作面に物体が接触又は近接することにより、タッチパネル部によって座標の検出が行われる。そして、入力操作面に押圧力を入力することにより、感圧センサ部によって押圧力が第1の電極及び第2の電極間の静電容量の変化として検出される。座標の検出と押圧力の検出との双方により入力を判定すれば、単に入力操作面へ物体が接触又は近接しただけで押圧がされない状態では入力が判定されないので、誤入力を低減できる。さらに、物体を入力操作面に触れた状態で入力操作面に沿って移動させることができるので操作性がよい。   According to the above electronic device, the touch panel unit detects coordinates when an object comes into contact with or approaches the input operation surface. Then, by inputting the pressing force to the input operation surface, the pressing force is detected as a change in capacitance between the first electrode and the second electrode by the pressure-sensitive sensor unit. If the input is determined by both the detection of the coordinates and the detection of the pressing force, the input is not determined in a state where the object is simply in contact with or close to the input operation surface and is not pressed, so that erroneous input can be reduced. Furthermore, since the object can be moved along the input operation surface while touching the input operation surface, the operability is good.

上記電子機器において、上記感圧センサ部は、上記パネルモジュールと上記第2の筐体の上記支持部との間に設けられてもよい。   In the electronic device, the pressure-sensitive sensor unit may be provided between the panel module and the support unit of the second casing.

上記電子機器によれば、第1の電極が第1の方向でパネルモジュールと対向し、第2の電極が支持部に対向した状態で、感圧センサ部がパネルモジュールと支持部との間に設けられる。第1の電極と第2の電極との間で第1の方向に第1の圧縮量で圧縮された第1の弾性部は、パネルモジュールと支持部との間で第1の電極と第2の電極とを弾性的に支持して、第1の電極と第2の電極との距離のバラツキを吸収する。これにより、個々の電子機器における押圧力に対する感度の個体差を抑えることができる。   According to the electronic apparatus, the pressure sensor unit is interposed between the panel module and the support unit in a state where the first electrode faces the panel module in the first direction and the second electrode faces the support unit. Provided. The first elastic portion compressed by the first compression amount in the first direction between the first electrode and the second electrode is formed between the first electrode and the second electrode between the panel module and the support portion. These electrodes are elastically supported to absorb variations in the distance between the first electrode and the second electrode. Thereby, the individual difference of the sensitivity with respect to the pressing force in each electronic device can be suppressed.

上記電子機器において、上記第1の弾性部の上記押圧力に応じた圧縮量は、上記押圧力に対して線形の依存性を有してもよい。   In the electronic device, the amount of compression corresponding to the pressing force of the first elastic portion may have a linear dependency on the pressing force.

上記電子機器によれば、押圧荷重に対して線形的に圧縮量が変化するので、押圧力を高精度に検出することが可能となる。   According to the electronic device, since the amount of compression changes linearly with respect to the pressing load, the pressing force can be detected with high accuracy.

上記電子機器において、上記第1の弾性部は、上記第1の圧縮量で圧縮された第1の状態と、上記第1の圧縮量とは異なる第2の圧縮量で圧縮された第2の状態とにおいて、上記押圧力に対する線形度が所定の範囲内にあってもよい。   In the electronic apparatus, the first elastic portion includes a first state compressed by the first compression amount and a second state compressed by a second compression amount different from the first compression amount. In the state, the linearity with respect to the pressing force may be within a predetermined range.

上記電子機器によれば、押圧力に応じた圧縮量が第1の圧縮状態での少なくとも2つの異なる圧縮量において押圧力に対する線形度が所定の範囲内にある第1の弾性部を用いることにより、第1の圧縮量の大きさに関係なく押圧感度の一定化を図ることができる。   According to the above electronic device, by using the first elastic portion in which the linearity with respect to the pressing force is within a predetermined range when the compression amount according to the pressing force is at least two different compression amounts in the first compression state. The pressing sensitivity can be made constant regardless of the size of the first compression amount.

本発明によれば、押圧検出の感度のバラツキを抑えることのできる感圧センサを備える電子機器を実現することができる。   ADVANTAGE OF THE INVENTION According to this invention, an electronic device provided with the pressure sensor which can suppress the dispersion | variation in the sensitivity of a press detection is realizable.

本発明の実施形態に係る電子機器を示す斜視図である。It is a perspective view which shows the electronic device which concerns on embodiment of this invention. 図1のA−A線から見た電子機器を示す概略断面図である。It is a schematic sectional drawing which shows the electronic device seen from the AA line of FIG. 図1のB−B線から見た電子機器を示す概略断面図である。It is a schematic sectional drawing which shows the electronic device seen from the BB line of FIG. 電子機器を示す分解斜視図である。It is a disassembled perspective view which shows an electronic device. タッチパネル部を示す分解斜視図である。It is a disassembled perspective view which shows a touchscreen part. 1つの感圧センサ部を示す断面図である。It is sectional drawing which shows one pressure-sensitive sensor part. 1つの感圧センサ部を示す概略断面図である。It is a schematic sectional drawing which shows one pressure-sensitive sensor part. 1つの感圧センサ部を示す別の概略断面図である。It is another schematic sectional drawing which shows one pressure-sensitive sensor part. 電子機器に入力操作が行われた様子を示す模式図である。It is a schematic diagram which shows a mode that input operation was performed to the electronic device. 感圧センサ部の弾性部のプリ圧縮を示す模式図である。It is a schematic diagram which shows pre-compression of the elastic part of a pressure-sensitive sensor part. 弾性部にかかる応力と弾性部の圧縮量の関係を示す図である。It is a figure which shows the relationship between the stress concerning an elastic part, and the compression amount of an elastic part. 弾性部にかかる応力と弾性部の圧縮量の関係を示す別の図である。It is another figure which shows the relationship between the stress concerning an elastic part, and the compression amount of an elastic part. 弾性部にかかる応力と弾性部の圧縮量の関係を示すさらに別の図である。It is another figure which shows the relationship between the stress concerning an elastic part, and the compression amount of an elastic part. 弾性部の材料の荷重と圧縮率との関係を示す図である。It is a figure which shows the relationship between the load of the material of an elastic part, and a compressibility. 弾性部の別の材料の荷重と圧縮率との関係を示す図である。It is a figure which shows the relationship between the load of another material of an elastic part, and a compressibility. 弾性部の材料の荷重と圧縮率との関係を示す図である。It is a figure which shows the relationship between the load of the material of an elastic part, and a compressibility. 弾性部の別の材料の荷重と圧縮率との関係を示す図である。It is a figure which shows the relationship between the load of another material of an elastic part, and a compressibility. 弾性部のさらに別の材料の荷重と圧縮率との関係を示す図である。It is a figure which shows the relationship between the load of another material of an elastic part, and a compressibility. 変形例に係る電子機器を示す分解斜視図である。It is a disassembled perspective view which shows the electronic device which concerns on a modification. 変形例に係る感圧センサ部を示す分解斜視図である。It is a disassembled perspective view which shows the pressure-sensitive sensor part which concerns on a modification. 別の変形例に係る電子機器を示す断面図である。It is sectional drawing which shows the electronic device which concerns on another modification.

以下、図面を参照しながら、本発明の実施形態を説明する。本実施形態において、電子機器1は静電容量方式によるタッチパネル部を備えた入力装置であるものとして説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the present embodiment, the electronic apparatus 1 will be described as an input device that includes a capacitive touch panel unit.

[電子機器の構成]
図1は、本発明の実施形態に係る電子機器1を示す斜視図である。図2は、図1のA−A線から見た電子機器1を示す概略断面図である。図3は、図1のB−B線から見た電子機器1を示す概略断面図である。図4は、電子機器1を示す分解斜視図である。
[Configuration of electronic equipment]
FIG. 1 is a perspective view showing an electronic apparatus 1 according to an embodiment of the present invention. FIG. 2 is a schematic cross-sectional view showing the electronic device 1 as viewed from the line AA in FIG. FIG. 3 is a schematic cross-sectional view showing the electronic apparatus 1 as viewed from the line BB in FIG. FIG. 4 is an exploded perspective view showing the electronic apparatus 1.

これらの図に示すように、電子機器1は、タッチパネル部50と、表示パネル部30と、感圧センサ部60と、回路基板70と、これらを収容する筐体15とを有する。   As shown in these drawings, the electronic device 1 includes a touch panel unit 50, a display panel unit 30, a pressure-sensitive sensor unit 60, a circuit board 70, and a housing 15 that accommodates them.

タッチパネル部50は、2枚の透明基板(後で説明するX電極基板150及びY電極基板250)が重ね合わせられてなり、表面にユーザの指等による入力を受け付ける矩形の入力操作面51を有する。タッチパネル部50は、静電容量方式による、入力操作面51のXY座標を検出する入力デバイスである。タッチパネル部50は、局所的に静電容量が変化した部位を検出し、これによりタッチパネル部50の入力操作面51のユーザの指が触れた位置や、この位置の変化を検出する。なお、タッチパネル部50の詳細な構成については後で説明する。   The touch panel unit 50 includes two transparent substrates (an X electrode substrate 150 and a Y electrode substrate 250, which will be described later) superimposed on each other, and has a rectangular input operation surface 51 that accepts an input by a user's finger or the like on the surface. . The touch panel unit 50 is an input device that detects the XY coordinates of the input operation surface 51 by a capacitance method. The touch panel unit 50 detects a site where the capacitance has locally changed, and thereby detects a position touched by the user's finger on the input operation surface 51 of the touch panel unit 50 and a change in this position. The detailed configuration of the touch panel unit 50 will be described later.

表示パネル部30は、タッチパネル部50の入力操作面51と同様の矩形の表示面31を有する。表示パネル部30の表示面31は、タッチパネル部50の入力操作面51に表裏対向する面に重ね合わせられ、これらの面は透明な接着層(図示せず。)により接着される。この接着層は、光の取り出し効率や輝度等の観点から、空気より屈折率が高いものを用いるとよい。あるいは、表示パネル部30の表示面31と、タッチパネル部50の入力操作面51に表裏対向する面とは、接着層を介さずに重ね合わせられてもよい。表示パネル部30の表示面31は、透明なタッチパネル部50を通してユーザから視認可能である。表示パネル部30は、例えばLCD(Liquid Crystal Display)、OELD(Organic Electroluminescent Display)等からなる。表示面31にはキーボード等のGUI(Graphic User Interface)要素や画像等のコンテンツが表示される。表示パネル部30には、表示面31に対して光を照射するバックライト(図示せず。)が設けられる。上記互いに重ね合わせられた表示パネル部30及びタッチパネル部50により、パネルモジュール35が構成される。   The display panel unit 30 has a rectangular display surface 31 similar to the input operation surface 51 of the touch panel unit 50. The display surface 31 of the display panel unit 30 is overlaid on the surface opposite to the input operation surface 51 of the touch panel unit 50, and these surfaces are bonded by a transparent adhesive layer (not shown). As the adhesive layer, a layer having a refractive index higher than that of air is preferably used from the viewpoint of light extraction efficiency, luminance, and the like. Alternatively, the display surface 31 of the display panel unit 30 and the surface opposite to the input operation surface 51 of the touch panel unit 50 may be overlapped without using an adhesive layer. The display surface 31 of the display panel unit 30 is visible to the user through the transparent touch panel unit 50. The display panel unit 30 includes, for example, an LCD (Liquid Crystal Display), an OELD (Organic Electroluminescent Display), or the like. The display surface 31 displays GUI (Graphic User Interface) elements such as a keyboard and contents such as images. The display panel unit 30 is provided with a backlight (not shown) that irradiates the display surface 31 with light. A panel module 35 is configured by the display panel unit 30 and the touch panel unit 50 that are overlapped with each other.

感圧センサ部60は、例えば長尺矩形状(直線形状)であり、矩形の表示面31をもつ表示パネル部30の対向する2辺の近傍にそれぞれの辺に沿って1つずつ設けられる。なお、以下の説明において、2つの感圧センサ部60が沿って配置される表示パネル部30の辺の方向を「Y軸方向」と呼ぶこととする。表示パネル部30とタッチパネル部50とが重ね合わせられる方向を「Z軸方向」と呼ぶこととする。これらY軸及びZ軸に対して直交する方向を「X軸方向」と呼ぶこととする。   The pressure-sensitive sensor unit 60 has, for example, a long rectangular shape (linear shape), and is provided one by one along each side in the vicinity of two opposing sides of the display panel unit 30 having the rectangular display surface 31. In the following description, the direction of the side of the display panel unit 30 in which the two pressure-sensitive sensor units 60 are arranged is referred to as “Y-axis direction”. A direction in which the display panel unit 30 and the touch panel unit 50 are overlapped is referred to as a “Z-axis direction”. A direction orthogonal to the Y axis and the Z axis is referred to as an “X axis direction”.

各感圧センサ部60は、電極61b(第1の電極)をもつ可動電極部61と、弾性部62と、電極63b(第2の電極)をもつ固定電極部63とを有する。感圧センサ部60タッチパネル部50の入力操作面51に入力される押圧力を可動電極部61の電極61b及び固定電極部63の電極63b間の静電容量の変化として検出可能である。可動電極部61は、表示パネル部30の表示面31に表裏対向する面に接触して配置される。固定電極部63は、可動電極部61とともにZ軸方向にて弾性部62を挟むように配置される。なお、感圧センサ部60の詳細な構成については後で説明する。   Each pressure-sensitive sensor unit 60 includes a movable electrode unit 61 having an electrode 61b (first electrode), an elastic unit 62, and a fixed electrode unit 63 having an electrode 63b (second electrode). The pressure force input to the input operation surface 51 of the pressure-sensitive sensor unit 60 touch panel unit 50 can be detected as a change in capacitance between the electrode 61 b of the movable electrode unit 61 and the electrode 63 b of the fixed electrode unit 63. The movable electrode unit 61 is disposed in contact with the surface opposite to the display surface 31 of the display panel unit 30. The fixed electrode portion 63 is disposed so as to sandwich the elastic portion 62 in the Z-axis direction together with the movable electrode portion 61. The detailed configuration of the pressure sensor 60 will be described later.

筐体15は、第1の筐体部10と、第2の筐体部20とを有する。第1の筐体部10は、例えばマグネシウムからなり、主板部11と、側板部12とを有する。主板部11(第1の係合部)は、パネルモジュール35より大きい外周形状をもつ矩形環状の平板部材である。主板部11の内側に設けられた開口は、タッチパネル部50の入力操作面51を露出するための窓部13を構成する。窓部13は、パネルモジュール35の外周形状より小さい矩形状である。側板部12は、窓部13の周縁部に相当する矩形の主板部11の4辺からZ軸方向に一体に突出する枠状の部材である。   The housing 15 includes a first housing portion 10 and a second housing portion 20. The first housing part 10 is made of, for example, magnesium and includes a main plate part 11 and a side plate part 12. The main plate portion 11 (first engagement portion) is a rectangular annular flat plate member having a larger outer peripheral shape than the panel module 35. The opening provided inside the main plate portion 11 constitutes the window portion 13 for exposing the input operation surface 51 of the touch panel portion 50. The window portion 13 has a rectangular shape smaller than the outer peripheral shape of the panel module 35. The side plate portion 12 is a frame-like member that integrally projects in the Z-axis direction from four sides of the rectangular main plate portion 11 corresponding to the peripheral edge portion of the window portion 13.

第2の筐体部20は、第1の部材21と、第2の部材41とを有する。第1の部材21は、例えばマグネシウムからなり、支持部としての主板部22と、2つの側板部23と、2つの底部24とを有する。主板部22は、パネルモジュール35の面と略等しい形状の平面をもつ略矩形の平板である。2つの側板部23は、略矩形の主板部22のX軸に沿った2辺からそれぞれZ軸方向に突出し、互いに対向する。2つの底部24は、2つの側板部23のZ軸方向での先端部からそれぞれY軸方向に主板部22から遠ざかるように突出し、互いに同一平面上に配置される位置関係となる。第2の部材41は、例えばマグネシウムからなり、底板部42と、側板部43とを有する。底板部42は、第1の筐体部10の主板部11と略等しい外周形状の平面をもつ矩形の平板である。側板部43は、矩形の底板部42の4辺からZ軸方向に一体に突出する枠状の部材である。   The second housing unit 20 includes a first member 21 and a second member 41. The first member 21 is made of magnesium, for example, and has a main plate portion 22 as a support portion, two side plate portions 23, and two bottom portions 24. The main plate portion 22 is a substantially rectangular flat plate having a plane having a shape substantially equal to the surface of the panel module 35. The two side plate portions 23 protrude in the Z-axis direction from the two sides along the X-axis of the substantially rectangular main plate portion 22 and face each other. The two bottom portions 24 protrude from the front end portions in the Z-axis direction of the two side plate portions 23 so as to be away from the main plate portion 22 in the Y-axis direction, and are in a positional relationship where they are arranged on the same plane. The second member 41 is made of magnesium, for example, and has a bottom plate portion 42 and side plate portions 43. The bottom plate portion 42 is a rectangular flat plate having an outer peripheral plane that is substantially equal to the main plate portion 11 of the first housing unit 10. The side plate portion 43 is a frame-like member that integrally projects from the four sides of the rectangular bottom plate portion 42 in the Z-axis direction.

第1の筐体部10と第2の筐体部20とは次のように組み合わせられて、内部にパネルモジュール35及び感圧センサ部60等を収容する。第2の筐体部20において、第2の部材41の底板部42に第1の部材21が配置される。この第1の部材21は、底部24が第2の部材41の底板部42に当接し、側板部23が第2の部材41の側板部43に対向するように配置される。第1の部材21の主板部22には感圧センサ部60が配置される。詳細には、主板部22に感圧センサ部60の固定電極部63が配置される。感圧センサ部60の上には表示パネル部30が配置され、表示パネル部30の上にはタッチパネル部50が配置される。タッチパネル部50の入力操作面51上に第1の筐体部10が配置されて、第1の筐体部10の環状の主板部11(第1の係合部)にタッチパネル部50の入力操作面51の4辺に対応する環状の周縁部52(第2の係合部)が係合する。これにより、タッチパネル部50の入力操作面51が窓部13から露出し、ユーザからの入力操作を受けることが可能となる。また、表示パネル部30の表示面31が透明なタッチパネル部50を通して窓部13から露出し、ユーザは表示面31に表示されるユーザインタフェース要素等を視認することが可能となる。第1の筐体部10の側板部12の先端部は、第2の筐体部20の第2の部材41の側板部43の先端部に当接する。第1の筐体部10と第2の筐体部20とは、このような位置関係で組み合わされ、図示しない螺子孔を通して螺子止めされて互いに固定される。   The first casing unit 10 and the second casing unit 20 are combined as follows, and house the panel module 35, the pressure-sensitive sensor unit 60, and the like inside. In the second housing part 20, the first member 21 is disposed on the bottom plate part 42 of the second member 41. The first member 21 is disposed such that the bottom portion 24 abuts against the bottom plate portion 42 of the second member 41 and the side plate portion 23 faces the side plate portion 43 of the second member 41. A pressure-sensitive sensor unit 60 is disposed on the main plate portion 22 of the first member 21. Specifically, the fixed electrode portion 63 of the pressure-sensitive sensor portion 60 is disposed on the main plate portion 22. A display panel unit 30 is disposed on the pressure-sensitive sensor unit 60, and a touch panel unit 50 is disposed on the display panel unit 30. The first casing unit 10 is disposed on the input operation surface 51 of the touch panel unit 50, and the input operation of the touch panel unit 50 is performed on the annular main plate unit 11 (first engaging unit) of the first casing unit 10. An annular peripheral portion 52 (second engaging portion) corresponding to the four sides of the surface 51 is engaged. Thereby, the input operation surface 51 of the touch panel part 50 is exposed from the window part 13, and it becomes possible to receive input operation from a user. In addition, the display surface 31 of the display panel unit 30 is exposed from the window unit 13 through the transparent touch panel unit 50, and the user can visually recognize user interface elements and the like displayed on the display surface 31. The distal end portion of the side plate portion 12 of the first housing portion 10 abuts on the distal end portion of the side plate portion 43 of the second member 41 of the second housing portion 20. The first housing unit 10 and the second housing unit 20 are combined in such a positional relationship, and are screwed through screw holes (not shown) and fixed to each other.

回路基板70には、表示パネル部30、タッチパネル部50及び感圧センサ部60等を制御する種々の電子部品等が実装され。回路基板70は、第2の筐体部20の第1の部材21の主板部22に装着されて、この主板部22と第2の部材41の底板部42とにより構成される空間に収容される。   Various electronic components and the like for controlling the display panel unit 30, the touch panel unit 50, the pressure sensor unit 60, and the like are mounted on the circuit board 70. The circuit board 70 is mounted on the main plate portion 22 of the first member 21 of the second housing portion 20 and is accommodated in a space constituted by the main plate portion 22 and the bottom plate portion 42 of the second member 41. The

[タッチパネル部]
図5は、タッチパネル部50を示す分解斜視図である。
同図に示すように、タッチパネル部50は、例えばそれぞれ矩形状のX電極基板150と、Y電極基板250とを有する。X電極基板150には、検出用X透明電極パターン153が形成される。Y電極基板250には、検出用Y透明電極パターン252が形成される。タッチパネル部50は、X電極基板150及びY電極基板250を互いに重ね合わせ、これらを接着層93にて接着することにより構成される。検出用X透明電極パターン153及び検出用Y透明電極パターン252が互いに平面的に重なりあった領域により、XY平面の座標検出領域80が構成される。なお、X電極基板150に形成される電極パターン等は、Y電極基板250に対向する面に配置されるため点線で図示している。
[Touch panel]
FIG. 5 is an exploded perspective view showing the touch panel unit 50.
As shown in the figure, the touch panel unit 50 includes, for example, a rectangular X electrode substrate 150 and a Y electrode substrate 250, respectively. An X transparent electrode pattern for detection 153 is formed on the X electrode substrate 150. A Y transparent electrode pattern for detection 252 is formed on the Y electrode substrate 250. The touch panel unit 50 is configured by superimposing an X electrode substrate 150 and a Y electrode substrate 250 on each other and bonding them with an adhesive layer 93. A coordinate detection region 80 on the XY plane is configured by a region where the X transparent electrode pattern for detection 153 and the Y transparent electrode pattern for detection 252 overlap each other in a plane. Note that the electrode patterns and the like formed on the X electrode substrate 150 are shown by dotted lines because they are arranged on the surface facing the Y electrode substrate 250.

X電極基板150は、基板151にX透明電極パターン153と、配線154とが形成されたものである。基板151は、例えば透明ポリイミド基板、PETフィルム基板又はガラス基板等の透明な基板からなる。X透明電極パターン153は、X軸方向に延在するストライプ状の検出用のITO(Indium Tin Oxide)が基板151に印刷されることにより形成される。配線154は、X透明電極パターン153と回路基板70とをフレキシブルプリント基板(図示せず。)を介して電気的に接続する。配線154は、例えばAg(銀)などで印刷形成され、X透明電極パターン153と略平行に延在して矩形状のX電極基板150の一辺に集約して形成される。   The X electrode substrate 150 is obtained by forming an X transparent electrode pattern 153 and a wiring 154 on a substrate 151. The substrate 151 is made of a transparent substrate such as a transparent polyimide substrate, a PET film substrate, or a glass substrate. The X transparent electrode pattern 153 is formed by printing on the substrate 151 striped detection ITO (Indium Tin Oxide) extending in the X-axis direction. The wiring 154 electrically connects the X transparent electrode pattern 153 and the circuit board 70 via a flexible printed board (not shown). The wiring 154 is formed by printing with Ag (silver) or the like, for example, and extends substantially in parallel with the X transparent electrode pattern 153 to be formed on one side of the rectangular X electrode substrate 150.

Y電極基板250は、基板251にY透明電極パターン252と、配線254とが形成されたものである。基板251は、例えば透明ポリイミド基板、PETフィルム基板又はガラス基板等の透明な基板からなる。Y透明電極パターン252は、Y軸方向に延在するストライプ状の検出用のITO(Indium Tin Oxide)が基板251に印刷されることにより形成される。配線254は、Y透明電極パターン252と回路基板70とをフレキシブルプリント基板(図示せず。)を介して電気的に接続する。配線254は、例えばAg(銀)などで印刷形成され、Y透明電極パターン252と略平行に延在して矩形状のY電極基板250の一辺に集約して形成される。   The Y electrode substrate 250 is obtained by forming a Y transparent electrode pattern 252 and a wiring 254 on a substrate 251. The substrate 251 is made of a transparent substrate such as a transparent polyimide substrate, a PET film substrate, or a glass substrate. The Y transparent electrode pattern 252 is formed by printing a stripe-like detection ITO (Indium Tin Oxide) extending in the Y-axis direction on the substrate 251. The wiring 254 electrically connects the Y transparent electrode pattern 252 and the circuit board 70 via a flexible printed board (not shown). The wiring 254 is formed by printing with Ag (silver) or the like, for example, and extends substantially parallel to the Y transparent electrode pattern 252 and is formed on one side of the rectangular Y electrode substrate 250.

このように、タッチパネル部50は、直交する2軸の方向に検出用の電極パターンが設けられた構成となっている。X透明電極パターン153及びY透明電極パターン252それぞれの検出出力は、回路基板70上に設けられた演算回路に入力され、2軸の空間での位置(XY座標)が特定される。各X透明電極パターン153及びY透明電極パターン252には所定電圧がかけられ、各X透明電極パターン153及びY透明電極パターン252に電荷が蓄積される。指による接触又は近接によりその電荷が変化し、X透明電極とY透明電極との間の静電容量が変化する。この変化を検出することによってXY座標を特定し、指の位置を検出する。   As described above, the touch panel unit 50 has a configuration in which detection electrode patterns are provided in the directions of two orthogonal axes. The detection outputs of the X transparent electrode pattern 153 and the Y transparent electrode pattern 252 are input to an arithmetic circuit provided on the circuit board 70, and a position (XY coordinate) in a biaxial space is specified. A predetermined voltage is applied to each X transparent electrode pattern 153 and Y transparent electrode pattern 252, and charges are accumulated in each X transparent electrode pattern 153 and Y transparent electrode pattern 252. The electric charge is changed by contact or proximity of the finger, and the capacitance between the X transparent electrode and the Y transparent electrode is changed. By detecting this change, the XY coordinates are specified, and the position of the finger is detected.

[感圧センサ部]
図6は、1つの感圧センサ部60を示す断面図である。
感圧センサ部60は、上述のように、弾性部62と、Z軸方向にて弾性部62を挟むように配置された可動電極部61及び固定電極部63とを有する。
[Pressure sensitive sensor]
FIG. 6 is a cross-sectional view showing one pressure-sensitive sensor unit 60.
As described above, the pressure-sensitive sensor unit 60 includes the elastic part 62 and the movable electrode part 61 and the fixed electrode part 63 that are disposed so as to sandwich the elastic part 62 in the Z-axis direction.

弾性部62は、電気絶縁性を有し、耐熱性及び耐寒性を有する材料からなる。弾性部62は、さらに、残留ひずみ(圧縮残留)が少なく、ヤング率が小さい材料からなるとよい。この種の材料として、例えば、発泡ポリウレタン等発泡ウレタン系の材料等の樹脂を発泡させたフォーム材を用いることができる。樹脂を発泡させたフォーム材は衝撃吸収性に優れる。あるいは、弾性部62として樹脂製の板バネ等が用いられてもよい。   The elastic part 62 is made of a material having electrical insulation and heat resistance and cold resistance. The elastic part 62 is preferably made of a material having a small residual strain (compression residual) and a small Young's modulus. As this type of material, for example, a foam material obtained by foaming a resin such as a foamed urethane-based material such as foamed polyurethane can be used. A foam material in which a resin is foamed is excellent in shock absorption. Alternatively, a resin leaf spring or the like may be used as the elastic portion 62.

可動電極部61は、支持体61aに第1の電極としての電極61bが形成されたものである。固定電極部63は、支持体63aに第2の電極としての電極63bが形成されたものである。支持体61a,63aは、例えばPET(Polyethylene Terephthalate)フィルム等の樹脂材料からなり、可撓性を有する。電極61bは、支持体61aの一方の面に、例えばスクリーン印刷、フレキソ印刷、グラビア印刷、オフセット印刷、インクジェット印刷等の印刷法により形成される。電極63bは、支持体63aの一方の面に、上記と同様の印刷法により形成される。   The movable electrode portion 61 is obtained by forming an electrode 61b as a first electrode on a support 61a. The fixed electrode portion 63 is obtained by forming an electrode 63b as a second electrode on a support 63a. The supports 61a and 63a are made of a resin material such as a PET (Polyethylene Terephthalate) film and have flexibility. The electrode 61b is formed on one surface of the support 61a by a printing method such as screen printing, flexographic printing, gravure printing, offset printing, and ink jet printing. The electrode 63b is formed on one surface of the support 63a by the same printing method as described above.

可動電極部61及び固定電極部63のY軸方向長さは弾性部62のY軸方向長さより大きく形成されており、可動電極部61及び固定電極部63の少なくとも一方の端部はそれぞれ弾性部62よりY軸方向に突出する。可撓性を有する可動電極部61及び固定電極部63の端部はそれぞれ回路基板70に接続される。これにより、電極61b,63bと回路基板70とが電気的に接続される。なお、可動電極部61及び固定電極部63と回路基板70との接続については図示を省略する。   The length of the movable electrode portion 61 and the fixed electrode portion 63 in the Y-axis direction is larger than the length of the elastic portion 62 in the Y-axis direction, and at least one end of the movable electrode portion 61 and the fixed electrode portion 63 is an elastic portion. Projects in the Y-axis direction from 62. The ends of the flexible movable electrode portion 61 and the fixed electrode portion 63 are connected to the circuit board 70, respectively. Thereby, the electrodes 61b and 63b and the circuit board 70 are electrically connected. The connection between the movable electrode portion 61 and the fixed electrode portion 63 and the circuit board 70 is not shown.

感圧センサ部60は、弾性部62と可動電極部61とを接着固定する接着層65と、弾性部62と固定電極部63とを接着固定する接着層64とをさらに備える。可動電極部61において、支持体61aの電極61bが形成された面に表裏対向する面と弾性部62とは、接着層65により接着固定される。固定電極部63において、支持体63aの電極63bが形成された面に表裏対向する面と弾性部62とは、接着層64により接着固定される。   The pressure-sensitive sensor unit 60 further includes an adhesive layer 65 that adheres and fixes the elastic part 62 and the movable electrode part 61, and an adhesive layer 64 that adheres and fixes the elastic part 62 and the fixed electrode part 63. In the movable electrode portion 61, the surface opposite to the surface on which the electrode 61b of the support 61a is formed and the elastic portion 62 are bonded and fixed by the adhesive layer 65. In the fixed electrode portion 63, the surface facing the front and back of the surface on which the electrode 63 b of the support 63 a is formed and the elastic portion 62 are bonded and fixed by the adhesive layer 64.

感圧センサ部60の可動電極部61において、支持体61aの電極61bが形成された面は、表示パネル部30の任意の部位に接着層66により接着固定される。固定電極部63において、支持体63aの電極63bが形成された面は、第2の筐体部20の第1の部材21の任意の部位に接着層67により接着固定される。   In the movable electrode part 61 of the pressure-sensitive sensor part 60, the surface of the support 61a on which the electrode 61b is formed is bonded and fixed to an arbitrary part of the display panel part 30 by the adhesive layer 66. In the fixed electrode portion 63, the surface of the support 63 a on which the electrode 63 b is formed is bonded and fixed to an arbitrary portion of the first member 21 of the second housing portion 20 by the adhesive layer 67.

なお、接着層66,67の表面にセパレータを設けてもよい。また、何れか一方の接着層66,67のみを設けてもよい。この場合、接着層が設けられない可動電極部61又は固定電極部63には、電極61b,63bを保護し、絶縁を確保するための保護フィルムを設けたり保護樹脂を塗布するとよい。   A separator may be provided on the surface of the adhesive layers 66 and 67. Further, only one of the adhesive layers 66 and 67 may be provided. In this case, the movable electrode portion 61 or the fixed electrode portion 63 where the adhesive layer is not provided may be provided with a protective film or a protective resin for protecting the electrodes 61b and 63b and ensuring insulation.

また、可動電極部61及び固定電極部63の電極61b,63bは、パネルモジュール35及び回路基板70等からのノイズの影響を受ける場合がある。このため、パネルモジュール35及び回路基板70等からのノイズを以下のようにシールドするとよい。   Further, the electrodes 61b and 63b of the movable electrode portion 61 and the fixed electrode portion 63 may be affected by noise from the panel module 35, the circuit board 70, and the like. For this reason, noise from the panel module 35, the circuit board 70, etc. may be shielded as follows.

図7は、1つの感圧センサ部60を示す概略断面図である。
例えば、可動電極部61の電極61bの近傍にGND電極61c(第3の電極)を設け、GNC電極61cをグラウンド電位に接続することで、パネルモジュール35からのノイズをシールドすることができる。回路基板70を実装する第2の筐体部20を金属で作製し、第2の筐体部20をグラウンド電位に接続することで回路基板70からのノイズをシールドすることができる。
FIG. 7 is a schematic cross-sectional view showing one pressure-sensitive sensor unit 60.
For example, by providing a GND electrode 61c (third electrode) near the electrode 61b of the movable electrode portion 61 and connecting the GNC electrode 61c to the ground potential, noise from the panel module 35 can be shielded. The second casing 20 on which the circuit board 70 is mounted is made of metal, and noise from the circuit board 70 can be shielded by connecting the second casing 20 to the ground potential.

図8は、1つの感圧センサ部60を示す別の概略断面図である。
あるいは、第2の筐体部20を非金属材料で作製する場合や第2の筐体部20をグラウンド電位に接続できない場合は、固定電極部63の電極63bの近傍にGND電極63cを設けてグラウンド電位に接続することで、回路基板70からのノイズをシールドすることができる。
FIG. 8 is another schematic cross-sectional view showing one pressure-sensitive sensor unit 60.
Alternatively, when the second casing 20 is made of a non-metallic material or when the second casing 20 cannot be connected to the ground potential, the GND electrode 63c is provided in the vicinity of the electrode 63b of the fixed electrode 63. By connecting to the ground potential, noise from the circuit board 70 can be shielded.

[感圧センサ部の動作原理]
次に、感圧センサ部60の動作原理について説明する。
図9は、電子機器1に入力操作が行われた様子を示す模式図である。
[Operation principle of pressure sensor]
Next, the operation principle of the pressure sensor unit 60 will be described.
FIG. 9 is a schematic diagram illustrating a state where an input operation has been performed on the electronic device 1.

タッチパネル部50の入力操作面51がユーザによるZ軸方向の押圧力成分を受けると、この押圧力が感圧センサ部60に伝わり、弾性部62がZ軸方向に圧縮される。可動電極部61と固定電極部63との間の静電容量は、Z軸方向の押圧力に応じた弾性部62の圧縮量による可動電極部61の電極61bと固定電極部63の電極63bとの間の距離に応じて変化する。   When the input operation surface 51 of the touch panel unit 50 receives a pressing force component in the Z-axis direction by the user, this pressing force is transmitted to the pressure-sensitive sensor unit 60, and the elastic portion 62 is compressed in the Z-axis direction. The electrostatic capacitance between the movable electrode part 61 and the fixed electrode part 63 is determined by the amount of compression of the elastic part 62 according to the pressing force in the Z-axis direction, and the electrode 61b of the movable electrode part 61 and the electrode 63b of the fixed electrode part 63. Varies depending on the distance between.

互いに対向する電極61b,63bの対向面積をSとし、この電極61b,63b間の距離に相当する弾性部62の厚みをd、弾性部62の誘電率をεとすると、対向する電極61b,63bの静電容量Cは以下の式(1)により求められる。なお、以下「厚み」とは、Z軸方向の厚みを示すものとする。   When the opposing area of the electrodes 61b and 63b facing each other is S, the thickness of the elastic part 62 corresponding to the distance between the electrodes 61b and 63b is d, and the dielectric constant of the elastic part 62 is ε, the opposing electrodes 61b and 63b Is obtained by the following equation (1). Hereinafter, “thickness” indicates the thickness in the Z-axis direction.

C=ε・S/d…(1)   C = ε · S / d (1)

タッチパネル部50の入力操作面51がユーザによるZ軸方向の押圧力を受けると、この押圧力が感圧センサ部60に伝わり、弾性部62の厚みdは押圧力に応じて減少する。弾性部62の厚みdが減少すると、静電容量Cが増加する。このように、弾性部62の厚みdの変化により生じる電極61b,63b間の静電容量の変化を利用して感圧機能が実現される。   When the input operation surface 51 of the touch panel unit 50 receives a pressing force in the Z-axis direction by the user, the pressing force is transmitted to the pressure-sensitive sensor unit 60, and the thickness d of the elastic portion 62 decreases according to the pressing force. When the thickness d of the elastic part 62 decreases, the capacitance C increases. As described above, the pressure-sensitive function is realized by utilizing the change in capacitance between the electrodes 61b and 63b caused by the change in the thickness d of the elastic portion 62.

電極63bには矩形のパルスが加えられ、電極61bから得られる信号が回路基板70に設けられた演算回路(図示せず。)に入力され、電極61b,63b間の静電容量の変化が検出される。この電極61b,63b間の静電容量の変化に基き、入力操作面51への押圧による入力決定操作がなされたことが判定される。   A rectangular pulse is applied to the electrode 63b, and a signal obtained from the electrode 61b is input to an arithmetic circuit (not shown) provided on the circuit board 70 to detect a change in capacitance between the electrodes 61b and 63b. Is done. Based on the change in capacitance between the electrodes 61b and 63b, it is determined that an input determination operation by pressing on the input operation surface 51 has been performed.

感圧センサ部60の静電容量の変化に基く入力操作面51への押圧力は、判定ユニット(図示せず。)により判定される。この判定ユニットは、電子機器1の制御部の一部として構成すればよい。判定ユニットは、各感圧センサ部60で検出された静電容量の変化に基づいて、上記押圧力を判定する。判定ユニットは、各感圧センサ部60の静電容量の変化の合算値に基づいて、上記押圧力を判定してもよい。これにより、入力操作面51への押圧位置に依存しない高精度な押圧力検出が可能となる。この場合、判定ユニットは、例えば、上記静電容量の変化の合算値から押圧力を判定してもよいし、上記合算値を感圧センサの数で除算することで得られる平均値から押圧力を判定してもよい。   The pressing force on the input operation surface 51 based on the change in capacitance of the pressure-sensitive sensor unit 60 is determined by a determination unit (not shown). The determination unit may be configured as a part of the control unit of the electronic device 1. The determination unit determines the pressing force based on the change in capacitance detected by each pressure-sensitive sensor unit 60. The determination unit may determine the pressing force based on the total value of the change in capacitance of each pressure-sensitive sensor unit 60. Thereby, it is possible to detect the pressing force with high accuracy without depending on the pressing position on the input operation surface 51. In this case, for example, the determination unit may determine the pressing force from the total value of the change in capacitance, or may determine the pressing force from the average value obtained by dividing the total value by the number of pressure sensors. May be determined.

このように、判定ユニットは、各感圧センサ部60で検出された静電容量の変化に基づいて押圧力を判定する。この静電容量の変化は、例えば、想定される静電容量の初期値と、この初期値に基き定められた閾値とに基き判定されてもよい。この場合、実際に製造された電子機器1における静電容量の初期値が想定される初期値と異なる値である場合、所定の押圧力を電子機器1に加えたときに所望の静電容量の変化として判定されないおそれがある。例えば、実際に製造された電子機器1の静電容量の初期値が想定される初期値より小さい場合、本来閾値に到達すべき押圧力を電子機器1に加えたにも拘らず、閾値に到達したものと判定されないおそれがある。あるいは、実際に製造された電子機器1の静電容量の初期値が想定される初期値より大きい場合、本来閾値に到達しない押圧力を電子機器1に加えたにも拘らず、閾値に到達したものと判定されてしまうおそれがある。このため、個々の電子機器1において静電容量の初期値にバラツキがあると、各電子機器1の押圧検出の感度にバラツキが生じる。   Thus, the determination unit determines the pressing force based on the change in capacitance detected by each pressure-sensitive sensor unit 60. This change in capacitance may be determined based on, for example, an assumed initial value of the capacitance and a threshold value determined based on the initial value. In this case, when the initial value of the electrostatic capacity in the actually manufactured electronic device 1 is a value different from the assumed initial value, a desired electrostatic capacity is obtained when a predetermined pressing force is applied to the electronic device 1. There is a risk that it will not be determined as a change. For example, when the initial value of the electrostatic capacity of the actually manufactured electronic device 1 is smaller than the assumed initial value, the threshold value is reached even though the pressing force that should originally reach the threshold value is applied to the electronic device 1. There is a risk that it will not be determined. Alternatively, when the initial value of the capacitance of the actually manufactured electronic device 1 is larger than the assumed initial value, the threshold value is reached even though a pressing force that does not originally reach the threshold value is applied to the electronic device 1. There is a risk that it will be determined. For this reason, if there is a variation in the initial value of the capacitance in each electronic device 1, the sensitivity of the pressure detection of each electronic device 1 varies.

ここで、静電容量Cは、上述のように電極61b,63b間の距離に相当する弾性部62の厚みdに依存する。従って、初期状態(押圧力入力前)での電極61b,63b間の距離に相当する弾性部62の厚みdを個々の電子機器1において一定とすれば、静電容量の初期値を個々の電子機器1において一定とすることができる。静電容量の初期値を個々の電子機器1において一定とすれば、所定の押圧力を個々の電子機器1に加えたときにそれぞれ所望の静電容量の変化として判定されることとなる。   Here, the capacitance C depends on the thickness d of the elastic portion 62 corresponding to the distance between the electrodes 61b and 63b as described above. Therefore, if the thickness d of the elastic portion 62 corresponding to the distance between the electrodes 61b and 63b in the initial state (before pressing force input) is constant in each electronic device 1, the initial value of the capacitance is set to each electronic device. It can be constant in the device 1. If the initial value of the capacitance is constant in each electronic device 1, it is determined as a desired change in capacitance when a predetermined pressing force is applied to each electronic device 1.

電極61b,63b間の距離を一定とするには、弾性部62の初期状態(押圧力入力前)での圧縮量を調整して弾性部62の厚みdを一定とすればよい。なお、この弾性部62の初期状態(押圧力入力前)での圧縮を「プリ圧縮」と呼ぶこととする。弾性部62のプリ圧縮量は、例えば、スペーサとしての役割をもつ第2の筐体部20の第1の部材21のZ軸方向での高さを変化させることにより調整可能である。このように第1の部材21のZ軸方向での高さを調整することによって、第2の部材41の部品の共通化を図りつつ、個々の電子機器1における弾性部62の厚みdを一定とすることができ、押圧力に対する感度のバラツキを抑えることができる。あるいは、弾性部62のプリ圧縮量は、第1の筐体部10と第2の筐体部20の第2の部材41の螺子止めの係合量を変化させることによっても調整可能である。   In order to make the distance between the electrodes 61b and 63b constant, the thickness d of the elastic part 62 may be made constant by adjusting the amount of compression of the elastic part 62 in the initial state (before pressing force input). The compression in the initial state (before pressing force input) of the elastic portion 62 is referred to as “pre-compression”. The pre-compression amount of the elastic part 62 can be adjusted, for example, by changing the height in the Z-axis direction of the first member 21 of the second housing part 20 serving as a spacer. By adjusting the height of the first member 21 in the Z-axis direction in this way, the thickness d of the elastic portion 62 in each electronic device 1 is kept constant while making the parts of the second member 41 common. And variation in sensitivity to the pressing force can be suppressed. Alternatively, the pre-compression amount of the elastic portion 62 can be adjusted by changing the engagement amount of the screwing of the second member 41 of the first housing portion 10 and the second housing portion 20.

このように、個々の電子機器1において弾性部62のプリ圧縮量を変化させることで、個々の電子機器1における初期状態(押圧力入力前)での電極61b,63b間の距離を一定とすることができる。これにより、プリ圧縮された弾性部62により電極間距離のバラツキが吸収され、その結果、個々の電子機器1における押圧力に対する感度のバラツキを抑えることができる。   In this way, by changing the pre-compression amount of the elastic portion 62 in each electronic device 1, the distance between the electrodes 61b and 63b in the initial state (before pressing force input) in each electronic device 1 is made constant. be able to. Thereby, the dispersion | variation in the distance between electrodes is absorbed by the precompressed elastic part 62, As a result, the dispersion | variation in the sensitivity with respect to the pressing force in each electronic device 1 can be suppressed.

なお、プリ圧縮された弾性部62はZ軸方向に反発するため、可動電極部61をZ軸方向に付勢してパネルモジュール35に押し付け、可動電極部61をZ軸方向で位置決めする。また、プリ圧縮された弾性部62は、固定電極部63をZ軸方向に付勢して第2の筐体部20の第1の部材21の主板部22に押し付け、固定電極部63をZ軸方向で位置決めする。さらに、プリ圧縮された弾性部62は、タッチパネル部50をZ軸方向に付勢して入力操作面51の周縁部52を第1の筐体部10の主板部11に押し付けて係合させ、タッチパネル部50をZ軸方向で位置決めする。このプリ圧縮された弾性部62の弾性力により、各部材のガタツキを抑えることができ、さらに外部からの衝撃を吸収することができる。   Since the pre-compressed elastic portion 62 repels in the Z-axis direction, the movable electrode portion 61 is urged in the Z-axis direction and pressed against the panel module 35 to position the movable electrode portion 61 in the Z-axis direction. Further, the pre-compressed elastic portion 62 urges the fixed electrode portion 63 in the Z-axis direction to press the fixed electrode portion 63 against the main plate portion 22 of the first member 21 of the second housing portion 20. Position in the axial direction. Further, the pre-compressed elastic portion 62 urges the touch panel portion 50 in the Z-axis direction to press and engage the peripheral portion 52 of the input operation surface 51 against the main plate portion 11 of the first housing portion 10. The touch panel unit 50 is positioned in the Z-axis direction. The elastic force of the pre-compressed elastic portion 62 can suppress backlash of each member and can absorb an impact from the outside.

また、感圧センサ部60を例えば長尺矩形状(直線形状)とし、表示面31をもつ表示パネル部30の対向する2辺の近傍にそれぞれの辺に沿って1つずつ設けたことにより、表示面31内の異なる位置での検出感度のバラツキを抑えることができる。   Further, the pressure-sensitive sensor unit 60 has, for example, a long rectangular shape (linear shape), and is provided one by one along each side in the vicinity of the two opposing sides of the display panel unit 30 having the display surface 31. Variations in detection sensitivity at different positions in the display surface 31 can be suppressed.

[弾性部の選定]
本実施形態では、このように個々の電子機器1において弾性部62のプリ圧縮量を変化させて、個々の電子機器1においてプリ圧縮された弾性部62の厚みdを一定としている。弾性部62は、上述のように、例えば、発泡ポリウレタン等発泡ウレタン系の材料等の樹脂を発泡させたフォーム材からなる。この種の材料は、非線形の応力−圧縮量の関係をもつ。従って、個々の電子機器1の弾性部62のプリ圧縮量が異なる場合、個々の電子機器1によって弾性部62の応力−圧縮量の感度にバラツキが生じるおそれがある。そこで、個々の電子機器1において弾性部62のプリ圧縮量が異なることを前提とした上で、個々の電子機器1における押圧力に対する感度の個体差をさらに高精度で抑えるため、種々の観点から好ましい弾性部62の選定について以下検討する。
[Selection of elastic part]
In the present embodiment, the pre-compression amount of the elastic portion 62 is changed in each electronic device 1 in this way, and the thickness d of the elastic portion 62 pre-compressed in each electronic device 1 is made constant. As described above, the elastic portion 62 is made of, for example, a foam material obtained by foaming a resin such as a urethane-based material such as polyurethane foam. This type of material has a non-linear stress-compression relationship. Therefore, when the pre-compression amount of the elastic part 62 of each electronic device 1 is different, the sensitivity of the stress-compression amount of the elastic part 62 may vary depending on the individual electronic device 1. Therefore, on the premise that the pre-compression amount of the elastic portion 62 is different in each electronic device 1, in order to further suppress individual differences in sensitivity to the pressing force in each electronic device 1, from various viewpoints. The selection of the preferred elastic portion 62 will be discussed below.

まず、弾性部62の厚み及び材質について検討する。弾性部62の厚みは、電子機器1の薄型化を考慮すると小さくするのがよく、例えばおよそ1mm〜0.5mm程度とすればよい。また、弾性部62の厚みを小さくしつつも予想されるプリ圧縮量のバラツキに対して適正な応力の範囲で変形しうることが必要であり、操作性を考慮すると弾性部62の弾性率は小さくするとよい。また、予想されるプリ圧縮量のバラツキに対して圧縮された状態からの圧縮感度が高く、バラツキが小さく、環境変化が少ない材料がよい。弾性部62としては、例えば発泡ウレタン系の材料を用いればよい。例えば発泡ポリウレタンは、発泡率により弾性率を変化させることができ、ヤング率2MPa以下の低弾性を実現可能である。   First, the thickness and material of the elastic part 62 will be examined. The thickness of the elastic portion 62 is preferably reduced in consideration of the reduction in thickness of the electronic device 1, and may be about 1 mm to 0.5 mm, for example. In addition, it is necessary to be able to be deformed within a proper stress range with respect to the expected variation in the pre-compression amount while reducing the thickness of the elastic portion 62. In consideration of operability, the elastic modulus of the elastic portion 62 is It is better to make it smaller. Further, a material that has high compression sensitivity from a compressed state with respect to the expected pre-compression amount variation, small variation, and little environmental change is preferable. For example, a urethane-based material may be used as the elastic portion 62. For example, foamed polyurethane can change its elastic modulus depending on the foaming rate, and can achieve low elasticity with a Young's modulus of 2 MPa or less.

次に、弾性部62のプリ圧縮について検討する。
図10は、感圧センサ部60の弾性部62のプリ圧縮を示す模式図である。
感圧センサ部60が第1の筐体部10と第2の筐体部20との間に収容されるとき、上述のように、弾性部62にはプリ圧縮応力が加えられている。
Next, pre-compression of the elastic part 62 will be considered.
FIG. 10 is a schematic diagram showing pre-compression of the elastic part 62 of the pressure-sensitive sensor part 60.
When the pressure-sensitive sensor unit 60 is accommodated between the first housing unit 10 and the second housing unit 20, pre-compressive stress is applied to the elastic unit 62 as described above.

ここで、プリ圧縮応力が加えられていない状態における感圧センサ部60の厚みをTとする。感圧センサ部60が第1の筐体部10と第2の筐体部20とで挟まれた状態では、厚みTであった感圧センサ部60はプリ圧縮されて厚みT’となる。また、第1の筐体部10の主板部11と第2の筐体部20の第1の部材21の主板部22との間のZ軸方向での距離をGとする(以下「隙間量G」と呼ぶこととする。)。パネルモジュール35の厚みをMとする(以下「モジュール厚M」と呼ぶこととする。)。ここで、感圧センサ部60の弾性部62のプリ圧縮量ΔT(ΔT>0)をT−T’としたとき、弾性部62のプリ圧縮量ΔTは、以下の式(2)により求められる。   Here, T is the thickness of the pressure-sensitive sensor unit 60 in a state where pre-compression stress is not applied. In a state where the pressure-sensitive sensor unit 60 is sandwiched between the first casing unit 10 and the second casing unit 20, the pressure-sensitive sensor unit 60 having the thickness T is pre-compressed to a thickness T '. Further, the distance in the Z-axis direction between the main plate portion 11 of the first casing portion 10 and the main plate portion 22 of the first member 21 of the second casing portion 20 is defined as G (hereinafter referred to as “gap amount”). G ”). The thickness of the panel module 35 is M (hereinafter referred to as “module thickness M”). Here, when the pre-compression amount ΔT (ΔT> 0) of the elastic portion 62 of the pressure-sensitive sensor unit 60 is TT ′, the pre-compression amount ΔT of the elastic portion 62 is obtained by the following equation (2). .

ΔT=M+T−G…(2)   ΔT = M + TG (2)

式(2)に示すように、弾性部62のプリ圧縮量ΔTは、隙間量G、モジュール厚M及び感圧センサ部60の厚みTに依存する。なお、ΔT<0とは、弾性部62がプリ圧縮されておらずZ軸方向に反発していない状態であるため、各寸法G,M,TはΔT>0の範囲で選定される。   As shown in Expression (2), the pre-compression amount ΔT of the elastic portion 62 depends on the gap amount G, the module thickness M, and the thickness T of the pressure-sensitive sensor portion 60. Note that ΔT <0 is a state in which the elastic portion 62 is not pre-compressed and does not repel in the Z-axis direction, and thus the dimensions G, M, and T are selected in a range of ΔT> 0.

感圧センサ部60に加わる圧縮量は、隙間量Gとモジュール厚Mの寸法公差の範囲である必要がある。このため、感圧センサ部60の厚みTはGmax−Mmin以上となる。例えば、Gmax−Mminが0.2mmである場合、プリ圧縮量ΔTは0〜0.2mmの範囲となる。例えば、この電子機器1に厚みTが0.5mmの感圧センサ部60を実装する。この場合、電子機器1に実装された際の感圧センサ部60の厚みT’は、G−Mの公差に応じた弾性部62のプリ圧縮量ΔTによって0.5mm〜0.3mmの範囲となる。   The amount of compression applied to the pressure-sensitive sensor unit 60 needs to be within the range of the dimensional tolerance between the gap amount G and the module thickness M. For this reason, the thickness T of the pressure-sensitive sensor unit 60 is equal to or greater than Gmax-Mmin. For example, when Gmax-Mmin is 0.2 mm, the pre-compression amount ΔT is in the range of 0 to 0.2 mm. For example, the pressure sensitive sensor unit 60 having a thickness T of 0.5 mm is mounted on the electronic device 1. In this case, the thickness T ′ of the pressure-sensitive sensor unit 60 when mounted on the electronic device 1 is in the range of 0.5 mm to 0.3 mm depending on the pre-compression amount ΔT of the elastic unit 62 according to the tolerance of GM. Become.

次に、押圧力に対する弾性部62の圧縮変化率について検討する。電子機器1の入力操作面51がユーザの指やスタイラスペン等で押圧する場合、押圧力は数gf〜数百gfであり、大きくても1kgf程度である。感圧センサ部60において、弾性部62の圧縮変化率が大きくなると、静電容量の変化率が大きくなる。従って、感度の高い感圧センサ部60を実現するためには、押圧力に対する弾性部62の圧縮変化率は大きいとよい。   Next, the compression change rate of the elastic part 62 with respect to the pressing force will be examined. When the input operation surface 51 of the electronic device 1 is pressed with a user's finger or stylus pen, the pressing force is several gf to several hundred gf, and is about 1 kgf at the maximum. In the pressure-sensitive sensor unit 60, when the compression change rate of the elastic portion 62 increases, the capacitance change rate increases. Therefore, in order to realize the pressure-sensitive sensor unit 60 with high sensitivity, the compression change rate of the elastic part 62 with respect to the pressing force is preferably large.

なお、圧縮率Kは以下の式(3)により求められる。   In addition, the compression rate K is calculated | required by the following formula | equation (3).

K=f(P)…(3)   K = f (P) (3)

ここで、f(P)は、材料固有の関数であり、Pは圧力である。圧力Pは、以下の式(4)により求められる。   Here, f (P) is a function specific to the material, and P is the pressure. The pressure P is calculated | required by the following formula | equation (4).

P=F/αS…(4)   P = F / αS (4)

ここで、Fは荷重であり、Sは面積であり、αは形状係数である。弾性部62の厚みをtとすると、式(3)及び式(4)に基き、圧力Pに対する圧縮量Δtが以下の式(5)により表される。   Here, F is a load, S is an area, and α is a shape factor. Assuming that the thickness of the elastic portion 62 is t, the compression amount Δt with respect to the pressure P is expressed by the following equation (5) based on the equations (3) and (4).

Δt=t×f(P)…(5)   Δt = t × f (P) (5)

弾性部62の圧縮率についてさらに詳細に検討する。
図11は、弾性部62にかかる応力と弾性部62の圧縮量の関係を示す図である。
以下、弾性部62の材料として、非線形の応力−圧縮量の関係をもつ材料を用いる場合について検討する。なお、弾性部62の応力−圧縮量の関係は、弾性部62の厚み、底面積等により変化する。
The compression rate of the elastic part 62 will be examined in more detail.
FIG. 11 is a diagram illustrating the relationship between the stress applied to the elastic part 62 and the compression amount of the elastic part 62.
Hereinafter, a case where a material having a nonlinear stress-compression amount relationship is used as the material of the elastic portion 62 will be considered. Note that the relationship between the stress and the compression amount of the elastic portion 62 varies depending on the thickness, bottom area, and the like of the elastic portion 62.

図12は、弾性部62にかかる応力と弾性部62の圧縮量の関係を示す別の図である。
電子機器1に実装された感圧センサ部60における弾性部62にかかる応力と圧縮量との関係について検討する。なお、以下単に「圧縮量」と呼ぶときは、弾性部62のプリ圧縮量ではなく、プリ圧縮された弾性部62に加えられるZ軸方向の押圧力に応じた弾性部62の圧縮量を示すものとする。感圧センサ部60が電子機器1に実装されたとき、弾性部62にはプリ圧縮量ΔTとなる応力が加わっている(図中原点)。電子機器1の入力操作面51が押圧されたときの弾性部62に加わる応力と弾性部62の圧縮量との関係は図示のようになる。想定されるプリ圧縮量のバラツキの範囲内で非線形の応力−圧縮量の関係をもつ弾性部62においては、プリ圧縮量ΔTが個々の電子機器1によって異なる場合、個々の電子機器1によって弾性部62の応力−圧縮量の感度にバラツキが生じる。しかしながら、仮に、想定されるプリ圧縮量のバラツキの範囲内での弾性部62の応力−圧縮量の関係が線形であれば、すなわち、弾性部62の圧縮量が押圧力に対して線形の依存性を有するならば、弾性部62のプリ圧縮量ΔTが個々の電子機器1によって異なるとしても、弾性部62の応力−圧縮量の感度は略一定となり、押圧力を高精度に検出することができる。
FIG. 12 is another diagram showing the relationship between the stress applied to the elastic part 62 and the compression amount of the elastic part 62.
The relationship between the stress applied to the elastic part 62 in the pressure-sensitive sensor part 60 mounted on the electronic device 1 and the amount of compression will be examined. Hereinafter, when simply referred to as “compression amount”, it indicates not the precompression amount of the elastic portion 62 but the compression amount of the elastic portion 62 according to the pressing force in the Z-axis direction applied to the precompressed elastic portion 62. Shall. When the pressure-sensitive sensor unit 60 is mounted on the electronic device 1, a stress corresponding to the pre-compression amount ΔT is applied to the elastic unit 62 (the origin in the figure). The relationship between the stress applied to the elastic part 62 when the input operation surface 51 of the electronic device 1 is pressed and the amount of compression of the elastic part 62 is as shown in the figure. In the elastic portion 62 having a nonlinear stress-compression amount relationship within the range of the assumed pre-compression amount variation, if the pre-compression amount ΔT differs depending on the individual electronic device 1, the elastic portion varies depending on the individual electronic device 1. The sensitivity of the 62 stress-compression amount varies. However, if the relationship between the stress and the compression amount of the elastic portion 62 within the range of the assumed pre-compression amount variation is linear, that is, the compression amount of the elastic portion 62 is linearly dependent on the pressing force. Even if the pre-compression amount ΔT of the elastic portion 62 varies depending on the individual electronic device 1, the sensitivity of the stress-compression amount of the elastic portion 62 is substantially constant, and the pressing force can be detected with high accuracy. it can.

図13は、弾性部62にかかる応力と弾性部62の圧縮量の関係を示すさらに別の図である。
弾性部62のプリ圧縮量が個々の電子機器1によってΔT1(プリ圧縮量min)からΔT2(プリ圧縮量max)の範囲でばらつく場合について検討する。図中原点は、各弾性部62のプリ圧縮量ΔT1,ΔT2を示す。プリ圧縮量ΔT1の弾性部62及びプリ圧縮量ΔT2の弾性部62それぞれに等しい応力(例えば、応力P)を加えたときの各弾性部62の圧縮量は異なる。詳細には、プリ圧縮量ΔT1の弾性部62の圧縮量はプリ圧縮量ΔT2の弾性部62の圧縮量より大きい。このようにプリ圧縮量ΔT1,ΔT2に応じて弾性部62の圧縮量が異なるので、弾性部62に等しい応力を加えたときの可動電極部61と固定電極部63との間の距離が異なり、生じる静電容量もまた異なる。詳細には、プリ圧縮量ΔT1の弾性部62は、プリ圧縮量ΔT2の弾性部62より静電容量が大きい。このため、個々の電子機器1によって入力操作面51への応力に対する感度のバラツキが生じる。弾性部62は、想定されるプリ圧縮量の範囲(例えば、ΔT1〜ΔT2)において、押圧力に対する感度バラツキが小さく、押圧力に対する圧縮率感度が高く、押圧力に対する圧縮量(圧縮量=圧縮率×プリ圧縮された弾性部62の厚み)が小さいとよい。
FIG. 13 is still another diagram showing the relationship between the stress applied to the elastic part 62 and the compression amount of the elastic part 62.
Consider a case where the pre-compression amount of the elastic portion 62 varies in the range of ΔT1 (pre-compression amount min) to ΔT2 (pre-compression amount max) by each electronic device 1. The origin in the figure indicates the pre-compression amount ΔT1, ΔT2 of each elastic portion 62. The amount of compression of each elastic portion 62 is different when equal stress (for example, stress P) is applied to each of the elastic portion 62 having the pre-compression amount ΔT1 and the elastic portion 62 having the pre-compression amount ΔT2. Specifically, the compression amount of the elastic portion 62 with the pre-compression amount ΔT1 is larger than the compression amount of the elastic portion 62 with the pre-compression amount ΔT2. Thus, since the compression amount of the elastic portion 62 differs according to the pre-compression amount ΔT1, ΔT2, the distance between the movable electrode portion 61 and the fixed electrode portion 63 when an equal stress is applied to the elastic portion 62 is different, The resulting capacitance is also different. Specifically, the elastic portion 62 with the pre-compression amount ΔT1 has a larger capacitance than the elastic portion 62 with the pre-compression amount ΔT2. For this reason, the sensitivity with respect to the stress to the input operation surface 51 arises with each electronic device 1. The elastic portion 62 has a small sensitivity variation with respect to the pressing force and a high compressibility sensitivity with respect to the pressing force in an assumed pre-compression amount range (for example, ΔT1 to ΔT2), and a compression amount with respect to the pressing force (compression amount = compression rate). X The thickness of the precompressed elastic portion 62) is preferably small.

図14は、弾性部62の材料の荷重と圧縮率との関係を示す図である。図15は、弾性部62の別の材料の荷重と圧縮率との関係を示す図である。   FIG. 14 is a diagram showing the relationship between the material load of the elastic portion 62 and the compressibility. FIG. 15 is a diagram illustrating the relationship between the load of another material of the elastic portion 62 and the compressibility.

弾性部62の異なる2種の材料の荷重と圧縮力の関係について検討する。ここで、弾性部62の材料として発泡ウレタンを用いるものとする。発泡ウレタン等の発泡樹脂における荷重に対する圧縮量の増加は非線形となる。なお、図14に示す材料を「A材」と呼び、図15に示す材料を「B材」と呼ぶこととする。   The relationship between the load of two different materials of the elastic part 62 and the compressive force will be examined. Here, urethane foam is used as the material of the elastic portion 62. The increase in the compression amount with respect to the load in the foamed resin such as urethane foam becomes nonlinear. The material shown in FIG. 14 is called “A material”, and the material shown in FIG. 15 is called “B material”.

B材はA材に比較して小さい弾性率を有し、A材とB材とに等しい荷重を加えたときの圧縮量は、A材よりB材のほうが大きい。すなわち、B材のほうが小さい押圧力で圧縮させることができ、荷重に対する圧縮感度が高い。このため、操作性の観点からA材よりB材が弾性部62の材料として好ましいようにも思える。   The B material has a smaller elastic modulus than the A material, and the compression amount when the equal load is applied to the A material and the B material is larger in the B material than in the A material. That is, the B material can be compressed with a smaller pressing force, and the compression sensitivity to the load is high. For this reason, it seems that the B material is more preferable as the material of the elastic portion 62 than the A material from the viewpoint of operability.

一方、B材の荷重に対する圧縮率の増加は非線形である。弾性部62の材料としてB材を用いたとき、電子機器1に実装された感圧センサ部60への押圧力に対する感度が個々の電子機器1によって大きくばらつくおそれがある。詳細には、圧縮率の増加が非線形となる範囲が弾性部62のプリ圧縮量ΔTのバラツキの範囲に含まれる場合、感圧センサ部60の押圧力に対する感度が個々の電子機器1によって大きくばらつくおそれがある。従って、個々の電子機器1間の感度のバラツキを考慮すると、B材がA材より好ましいというわけではない。弾性部62の材料としてB材を用いる場合は、製品間の感度のバラツキを抑えるために、プリ圧縮量ΔTのバラツキの範囲を圧縮率の増加が線形となる範囲、すなわち弾性部62の圧縮量が押圧力に対して線形の依存性を有する範囲に抑えるとよい。なお、本明細書において「線形」とは、完全な線形だけを示すものでなく、完全な線形に近似した形や、屈曲点を含まない形を含むものとする。   On the other hand, the increase in the compressibility with respect to the load of the B material is non-linear. When the material B is used as the material of the elastic portion 62, the sensitivity to the pressure applied to the pressure-sensitive sensor unit 60 mounted on the electronic device 1 may vary greatly depending on the individual electronic device 1. Specifically, when the range in which the increase in the compression rate is non-linear is included in the range of variation in the pre-compression amount ΔT of the elastic portion 62, the sensitivity to the pressing force of the pressure-sensitive sensor unit 60 varies greatly depending on the individual electronic device 1. There is a fear. Therefore, considering the sensitivity variation among the individual electronic devices 1, the B material is not preferable to the A material. When the material B is used as the material of the elastic portion 62, in order to suppress variations in sensitivity between products, the variation range of the pre-compression amount ΔT is a range in which the increase in compression rate is linear, that is, the compression amount of the elastic portion 62. Should be limited to a range having a linear dependence on the pressing force. In the present specification, “linear” does not only indicate perfect linearity, but also includes a shape approximated to perfect linearity and a shape that does not include an inflection point.

なお、A材の荷重に対する圧縮率の増加も非線形であるので、弾性部62の材料としてA材を用いる場合も、プリ圧縮量ΔTのバラツキの範囲を圧縮率の増加が線形すなわち弾性部62の圧縮量が押圧力に対して線形の依存性を有する範囲となる範囲に抑えることが求められる。   In addition, since the increase in the compression rate with respect to the load of the A material is also nonlinear, even when the A material is used as the material of the elastic portion 62, the range of variation in the pre-compression amount ΔT is linear, that is, the increase in the compression rate is linear. It is required to suppress the compression amount to a range that has a linear dependence on the pressing force.

想定されるプリ圧縮量ΔTのバラツキの範囲における荷重に対する圧縮率の増加が線形となる材料で弾性部62を構成した場合の荷重と圧縮率との関係について検討する。想定されるプリ圧縮量ΔTのバラツキの範囲における荷重に対する圧縮率の増加が線形となる異なる3種類の材料で弾性部62を構成する。   The relationship between the load and the compression rate when the elastic portion 62 is made of a material in which the increase in the compression rate with respect to the load in the range of the assumed pre-compression amount ΔT is linear will be examined. The elastic portion 62 is composed of three different types of materials in which the increase in the compression rate with respect to the load in the range of the assumed pre-compression amount ΔT varies.

図16は、弾性部62の材料の荷重と圧縮率との関係を示す図である。図17は、弾性部62の別の材料の荷重と圧縮率との関係を示す図である。図18は、弾性部62のさらに別の材料の荷重と圧縮率との関係を示す図である。
図16に示す材料を「C材」と呼ぶ。C材として、株式会社ロジャースイノアック製「ポロン」(登録商標)のタイプSS−24を用いた。図17に示す材料を「D材」と呼ぶ。D材として、株式会社ロジャースイノアック製「ポロン」(登録商標)のタイプSS−32を用いた。図18に示す材料を「E材」と呼ぶこととする。E材として、株式会社ロジャースイノアック製「ポロン」(登録商標)のタイプMH−48を用いた。
FIG. 16 is a diagram showing the relationship between the material load of the elastic portion 62 and the compressibility. FIG. 17 is a diagram illustrating the relationship between the load of another material of the elastic portion 62 and the compressibility. FIG. 18 is a diagram showing the relationship between the load of another material of the elastic portion 62 and the compressibility.
The material shown in FIG. 16 is referred to as “C material”. As the C material, “Polon” (registered trademark) type SS-24 manufactured by Roger Sinoac Co., Ltd. was used. The material shown in FIG. 17 is referred to as “D material”. As the D material, “Polon” (registered trademark) type SS-32 manufactured by Roger Sinoac Co., Ltd. was used. The material shown in FIG. 18 is referred to as “E material”. As material E, type MH-48 of “Polon” (registered trademark) manufactured by Roger Sinoac Co., Ltd. was used.

弾性部62のプリ圧縮量及び材料を変化させて電子機器1を作製し、異なる荷重を入力操作面51に加えたときの弾性部62の荷重に対する圧縮変化率を測定した。詳細には、パネルモジュール35のサイズを3.5インチ相当とし、弾性部62の厚みをおよそ0.5mmとした。弾性部62のプリ圧縮量を50μm〜250μm(プリ圧縮率10%〜50%)の範囲で変化させた。プリ圧縮量50μm〜250μm(プリ圧縮率10%〜50%)とは、上記「想定されるプリ圧縮量ΔTのバラツキの範囲」に相当する。   The electronic device 1 was manufactured by changing the pre-compression amount and the material of the elastic part 62, and the compression change rate with respect to the load of the elastic part 62 when different loads were applied to the input operation surface 51 was measured. Specifically, the size of the panel module 35 was set to 3.5 inches, and the thickness of the elastic portion 62 was set to about 0.5 mm. The pre-compression amount of the elastic part 62 was changed in the range of 50 μm to 250 μm (pre-compression rate 10% to 50%). The pre-compression amount of 50 μm to 250 μm (pre-compression rate of 10% to 50%) corresponds to the above “expected range of variation of the pre-compression amount ΔT”.

図16に示すように、C材で弾性部62を作製した場合、1Nの荷重を加えたときの弾性部62の圧縮率は、プリ圧縮量250μm(プリ圧縮率50%)のとき5.52%であり、プリ圧縮量50μm(プリ圧縮率10%)のとき10.7%であり、変化率Rは5.18%であった。2Nの荷重を加えたときの弾性部62の圧縮率は、プリ圧縮量250μm(プリ圧縮率50%)のとき10.07%であり、プリ圧縮量50μm(プリ圧縮率10%)のとき19.63%であり、変化率Rは9.56%であった。3Nの荷重を加えたときの弾性部62の圧縮率は、プリ圧縮量250μm(プリ圧縮率50%)のとき13.85%であり、プリ圧縮量50μm(プリ圧縮率10%)のとき27.05%であり、変化率Rは13.19%であった。   As shown in FIG. 16, when the elastic portion 62 is made of C material, the compression rate of the elastic portion 62 when a 1N load is applied is 5.52 when the pre-compression amount is 250 μm (pre-compression rate 50%). When the pre-compression amount was 50 μm (pre-compression rate 10%), it was 10.7%, and the rate of change R was 5.18%. The compression ratio of the elastic portion 62 when a load of 2N is applied is 10.07% when the pre-compression amount is 250 μm (pre-compression ratio 50%), and 19 when the pre-compression amount is 50 μm (pre-compression ratio 10%). The rate of change R was 9.56%. The compression rate of the elastic portion 62 when a load of 3N is applied is 13.85% when the pre-compression amount is 250 μm (pre-compression rate 50%), and 27 when the pre-compression amount is 50 μm (pre-compression rate 10%). The rate of change R was 13.19%.

図17に示すように、D材で弾性部62を作製した場合、1Nの荷重を加えたときの弾性部62の圧縮率は、プリ圧縮量250μm(プリ圧縮率50%)のとき3.74%であり、プリ圧縮量50μm(プリ圧縮率10%)のとき4.65%であり、変化率Rは0.97%であった。2Nの荷重を加えたときの弾性部62の圧縮率は、プリ圧縮量250μm(プリ圧縮率50%)のとき7.14%であり、プリ圧縮量50μm(プリ圧縮率10%)のとき9.12%であり、変化率Rは2.07%であった。3Nの荷重を加えたときの弾性部62の圧縮率は、プリ圧縮量250μm(プリ圧縮率50%)のとき10.20%であり、プリ圧縮量50μm(プリ圧縮率10%)のとき13.40%であり、変化率Rは3.27%であった。   As shown in FIG. 17, when the elastic portion 62 is made of D material, the compression ratio of the elastic portion 62 when a 1N load is applied is 3.74 when the pre-compression amount is 250 μm (pre-compression rate 50%). When the pre-compression amount was 50 μm (pre-compression rate 10%), it was 4.65%, and the rate of change R was 0.97%. The compression ratio of the elastic portion 62 when a load of 2N is applied is 7.14% when the pre-compression amount is 250 μm (pre-compression ratio 50%), and 9 when the pre-compression amount is 50 μm (pre-compression ratio 10%). The rate of change R was 2.07%. The compression ratio of the elastic portion 62 when a load of 3N is applied is 10.20% when the pre-compression amount is 250 μm (pre-compression ratio 50%), and 13 when the pre-compression amount is 50 μm (pre-compression ratio 10%). The rate of change R was 3.27%.

図18に示すように、E材で弾性部62を作製した場合、1Nの荷重を加えたときの弾性部62の圧縮率は、プリ圧縮量250μm(プリ圧縮率50%)のとき2.61%であり、プリ圧縮量50μm(プリ圧縮率10%)のとき2.35%であり、変化率Rは0.34%であった。2Nの荷重を加えたときの弾性部62の圧縮率は、プリ圧縮量250μm(プリ圧縮率50%)のとき5.09%であり、プリ圧縮量50μm(プリ圧縮率10%)のとき4.62%であり、変化率Rは0.67%であった。3Nの荷重を加えたときの弾性部62の圧縮率は、プリ圧縮量250μm(プリ圧縮率50%)のとき7.41%であり、プリ圧縮量50μm(プリ圧縮率10%)のとき6.83%であり、変化率Rは0.99%であった。   As shown in FIG. 18, when the elastic portion 62 is made of E material, the compression ratio of the elastic portion 62 when a load of 1 N is applied is 2.61 when the pre-compression amount is 250 μm (pre-compression rate 50%). When the pre-compression amount was 50 μm (pre-compression rate 10%), it was 2.35%, and the rate of change R was 0.34%. The compression ratio of the elastic portion 62 when a load of 2N is applied is 5.09% when the pre-compression amount is 250 μm (pre-compression ratio 50%), and 4 when the pre-compression amount is 50 μm (pre-compression ratio 10%). The rate of change R was 0.67%. The compression ratio of the elastic portion 62 when a load of 3N is applied is 7.41% when the pre-compression amount is 250 μm (pre-compression ratio 50%), and 6 when the pre-compression amount is 50 μm (pre-compression ratio 10%). The rate of change R was 0.99%.

E材で弾性部62を作製した場合、C材及びD材に比較して、プリ圧縮量の違いに対して押圧力に対する圧縮率の変化率Rのバラツキを抑えることができた。一方、C材で弾性部62を作製した場合、D材及びE材に比較して、プリ圧縮量の違いにより押圧力に対する圧縮率の変化率Rが大きくばらついた。   When the elastic part 62 was produced with E material, compared with C material and D material, the variation in the rate of change R of the compression rate with respect to the pressing force was suppressed with respect to the difference in the pre-compression amount. On the other hand, when the elastic part 62 was produced with the C material, the rate of change R of the compression rate with respect to the pressing force varied greatly due to the difference in the pre-compression amount compared to the D material and the E material.

このように、C材はD材及びE材に比較してプリ圧縮量の違いによる圧縮率の変化率のバラツキが大きく、弾性部62の材料としてはC材よりもD材及びE材のほうが好ましい。しかしながらC材は、想定されるプリ圧縮量ΔTのバラツキの範囲での荷重に対する圧縮率の増加が線形であるから、A材及びB材に比較してプリ圧縮量の違いによる圧縮率の変化率のバラツキが小さく、A材及びB材に比較して弾性部62の材料として好ましい。従って、パネルモジュール35のサイズを3.5インチ相当とし、弾性部62の厚みをおよそ0.5mmとし、弾性部62のプリ圧縮量を50μm〜250μm(プリ圧縮率10%〜50%)の範囲で変化させた場合、1Nの荷重を加えたときの弾性部62の圧縮率の変化率Rがおよそ7%以下であり、2Nの荷重を加えたときの弾性部62の圧縮率の変化率Rがおよそ10%以下であり、3Nの荷重を加えたときの弾性部62の圧縮率の変化率Rがおよそ15%以下となる材料を弾性部62に用いればよい。   Thus, the C material has a larger variation in the change rate of the compression rate due to the difference in the pre-compression amount than the D material and the E material, and the material of the elastic part 62 is the D material and the E material rather than the C material. preferable. However, since the increase in the compression rate with respect to the load within the range of the variation in the pre-compression amount ΔT assumed for the C material is linear, the change rate of the compression rate due to the difference in the pre-compression amount compared to the A material and the B material. This is preferable as the material of the elastic portion 62 as compared with the A material and the B material. Therefore, the size of the panel module 35 is equivalent to 3.5 inches, the thickness of the elastic portion 62 is about 0.5 mm, and the pre-compression amount of the elastic portion 62 is in the range of 50 μm to 250 μm (pre-compression rate 10% to 50%). When the load of 1N is applied, the change rate R of the compressibility of the elastic portion 62 when a load of 1N is applied is approximately 7% or less, and the change rate R of the compressibility of the elastic portion 62 when a load of 2N is applied. Is approximately 10% or less, and a material whose change rate R of the compression ratio of the elastic part 62 when a load of 3N is applied is approximately 15% or less may be used for the elastic part 62.

本実施形態によれば、想定されるプリ圧縮量のバラツキの範囲内で応力−圧縮量の関係が線形となる材料、すなわち、圧縮量が押圧力に対して線形の依存性を有する材料を弾性部62の材料として選定することにより、プリ圧縮量に関係なく押圧感度の一定化を図ることができる。これにより、個々の電子機器1における押圧力に対する感度の個体差をさらに高精度で抑えることができる。   According to the present embodiment, a material in which the relationship between the stress and the compression amount is linear within the range of the assumed pre-compression amount variation, that is, a material in which the compression amount has a linear dependence on the pressing force is elastic. By selecting the material for the part 62, it is possible to make the pressing sensitivity constant regardless of the pre-compression amount. Thereby, the individual difference of the sensitivity with respect to the pressing force in each electronic device 1 can be suppressed with higher accuracy.

本実施形態によれば、タッチパネル部50は、入力操作面51に対するユーザの指等の接触又は近接による静電容量の変化を検出することによってXY座標を特定する。また、感圧センサ部60は、入力操作面51に入力された押圧力を静電容量の変化として検出する。ここで、タッチパネル部50によるXY座標の検出と感圧センサ部60によるZ軸方向の押圧力の検出との双方により入力を判定すれば、単にユーザの指等が入力操作面51に触れているだけでZ軸方向への押圧がなされない状態では入力決定が判定されない。これにより、ユーザによる電子機器1への誤入力を減少させることができる。さらに、ユーザの指等を入力操作面51に触れた状態で入力操作面51上をXY平面に沿って移動させることができるので操作性がよい。   According to the present embodiment, the touch panel unit 50 specifies XY coordinates by detecting a change in capacitance due to contact or proximity of a user's finger or the like to the input operation surface 51. Further, the pressure-sensitive sensor unit 60 detects the pressing force input to the input operation surface 51 as a change in capacitance. Here, if the input is determined by both the detection of the XY coordinates by the touch panel unit 50 and the detection of the pressing force in the Z-axis direction by the pressure-sensitive sensor unit 60, the user's finger or the like simply touches the input operation surface 51. The input decision is not determined in a state where no pressing in the Z-axis direction is performed. Thereby, the erroneous input to the electronic device 1 by the user can be reduced. Furthermore, since the user can move the input operation surface 51 along the XY plane while touching the input operation surface 51 with the user's finger or the like, the operability is good.

この電子機器1は、例えば携帯端末などに使用できる。表示パネル30にパーソナルコンピュータのキーボードの如くテンキーを表示させ、入力操作面51上でユーザの指により入力をが行われる。このとき電子機器1に、上述の操作特性、すなわちタッチパネル部50により入力操作面51に対するZ軸方向の押圧力の入力座標(XY座標)が検出される操作特性を持たせることができる。この場合、指を入力操作面51上でXY方向に移動させてもZ軸方向の押圧力を加えなければ入力決定と判定されない。これにより、指を入力操作面51に接触していて望まないキーを入力決定してしまうという誤入力のおそれが低減する。   The electronic device 1 can be used for a portable terminal, for example. A numeric keypad is displayed on the display panel 30 like a keyboard of a personal computer, and input is performed on the input operation surface 51 by a user's finger. At this time, the electronic device 1 can have the above-described operation characteristics, that is, the operation characteristics in which the input coordinates (XY coordinates) of the pressing force in the Z-axis direction with respect to the input operation surface 51 are detected by the touch panel unit 50. In this case, even if the finger is moved on the input operation surface 51 in the XY directions, it is not determined that the input is determined unless a pressing force in the Z-axis direction is applied. As a result, the possibility of erroneous input such that an input of an undesired key is determined by touching the input operation surface 51 with a finger is reduced.

また、電子機器1を、情報処理装置(図示せず。)に対して命令を与えるためのマウス操作の代替を行う入力装置に適用することも可能である。このマウス操作とは、例えば、表示パネル30に表示されるアイコンのクリック及びドラッグ等を示す。この場合、例えば、アイコンの位置を入力操作面51のXY平面上で選択し、そのアイコンの位置を選択しつつ入力操作面51をZ軸方向に押圧する。これにより、マウスによるアイコンの位置の選択及びクリックに相当する操作が行われる。さらに、Z軸方向への押圧状態を保持したまま指を入力操作面51に接触させた状態でXY方向に移動させることによって、ドラッグに相当する操作が行われる。   In addition, the electronic device 1 can be applied to an input device that substitutes for a mouse operation for giving a command to an information processing device (not shown). This mouse operation refers to, for example, clicking and dragging an icon displayed on the display panel 30. In this case, for example, the position of the icon is selected on the XY plane of the input operation surface 51, and the input operation surface 51 is pressed in the Z-axis direction while selecting the position of the icon. Thereby, an operation corresponding to selection and click of the icon position by the mouse is performed. Furthermore, an operation corresponding to a drag is performed by moving the finger in the XY direction while keeping the pressed state in the Z-axis direction in contact with the input operation surface 51.

[変形例]
本発明に係る実施形態は、以上説明した実施形態に限定されず、他の種々の実施形態が考えられる。なお、これ以降の説明では、上記実施形態に係る電子機器1の部材や機能等について同様のものは同様の参照符号を付した上で説明を簡略化または省略し、異なる点を中心に説明する。
[Modification]
The embodiment according to the present invention is not limited to the above-described embodiment, and various other embodiments are conceivable. In the following description, the same components and functions of the electronic apparatus 1 according to the above embodiment are denoted by the same reference numerals, the description is simplified or omitted, and different points are mainly described. .

上記実施形態の電子機器1において、感圧センサ部60を矩形の表示パネル部30の対向する2辺の近傍にそれぞれの辺に沿って1つずつ設けた。しかしながら、これに限定されない。   In the electronic device 1 of the above embodiment, the pressure-sensitive sensor unit 60 is provided one by one along each side in the vicinity of two opposing sides of the rectangular display panel unit 30. However, not limited to this.

図19は、変形例に係る電子機器1aを示す分解斜視図である。
同図に示す電子機器1aは、1つの感圧センサ部60と、2つの弾性支持部68とを有する。2つの弾性支持部68は、矩形の表示パネル部30の対向する2辺の近傍にそれぞれの辺に沿って1つずつ設けられる。1つの感圧センサ部60は、2つの弾性支持部68の間に、例えば2つの弾性支持部68と略平行に配設される。弾性支持部68は、弾性部62と同様の材料からなり、感圧センサ部60の厚みと略等しい厚みを有する。
FIG. 19 is an exploded perspective view showing an electronic apparatus 1a according to a modification.
The electronic apparatus 1a shown in the figure has one pressure sensor 60 and two elastic supports 68. Two elastic support portions 68 are provided in the vicinity of two opposing sides of the rectangular display panel unit 30 along each side. One pressure-sensitive sensor unit 60 is disposed between the two elastic support portions 68, for example, substantially parallel to the two elastic support portions 68. The elastic support portion 68 is made of the same material as that of the elastic portion 62 and has a thickness substantially equal to the thickness of the pressure-sensitive sensor portion 60.

この電子機器1aによれば、タッチパネル部50の入力操作面51がZ軸方向の押圧力を受けると、この押圧力が弾性支持部68及び感圧センサ部60に伝わり、弾性支持部68及び感圧センサ部60の弾性部62がZ軸方向に圧縮される。感圧センサ部60の可動電極部61と固定電極部63との間の静電容量は、Z軸方向の押圧力に応じた弾性部62の圧縮量による可動電極部61と固定電極部63との間の距離に応じて変化し、この静電容量の変化を利用して感圧機能が実現される。   According to the electronic device 1a, when the input operation surface 51 of the touch panel unit 50 receives a pressing force in the Z-axis direction, the pressing force is transmitted to the elastic support unit 68 and the pressure-sensitive sensor unit 60. The elastic part 62 of the pressure sensor part 60 is compressed in the Z-axis direction. The capacitance between the movable electrode portion 61 and the fixed electrode portion 63 of the pressure sensitive sensor portion 60 is determined by the amount of compression of the elastic portion 62 according to the pressing force in the Z-axis direction. The pressure-sensitive function is realized by utilizing this change in capacitance.

なお、2つの弾性支持部68のヤング率と弾性部62のヤング率とは、等しくてもよいし、異なっていてもよい。また、一方の弾性支持部68のヤング率と他方の弾性支持部68のヤング率とは、等しくてもよいし、異なっていてもよい。この場合でも、弾性支持部68及び弾性部62がZ軸方向に圧縮されれば、静電容量の変化を利用した感圧機能が実現される。   Note that the Young's modulus of the two elastic support portions 68 and the Young's modulus of the elastic portion 62 may be the same or different. Further, the Young's modulus of one elastic support portion 68 and the Young's modulus of the other elastic support portion 68 may be the same or different. Even in this case, if the elastic support portion 68 and the elastic portion 62 are compressed in the Z-axis direction, a pressure-sensitive function using a change in capacitance is realized.

本変形例の電子機器1aにおいては、弾性部62に加えて弾性支持部68をさらに設けることにより、プリ圧縮された弾性部62とともにプリ圧縮された弾性支持部68が電極間距離のバラツキを吸収するとことができる。その結果、個々の電子機器1における押圧力に対する感度の個体差を抑えることができる。   In the electronic device 1a of this modification, by providing an elastic support portion 68 in addition to the elastic portion 62, the pre-compressed elastic support portion 68 and the pre-compressed elastic portion 62 absorb variations in the distance between the electrodes. Then it is possible. As a result, individual differences in sensitivity to the pressing force in each electronic device 1 can be suppressed.

上記実施形態の電子機器1において、感圧センサ部60は長尺矩形状とし、矩形の表示パネル部30の対向する2辺の近傍にそれぞれの辺に沿って1つずつ設けた。しかしながら、これに限定されない。   In the electronic device 1 of the above-described embodiment, the pressure-sensitive sensor unit 60 has a long rectangular shape, and is provided in the vicinity of two opposing sides of the rectangular display panel unit 30 along each side. However, not limited to this.

図20は、変形例に係る感圧センサ部を示す分解斜視図である。
図20(a)に示すように、感圧センサ部は、楕円形環状(60a)、3つの長尺矩形(60b)、X型(60c)、矩形環状(60d)等であってもよい。感圧センサ部60a〜60dの形状及び配設位置は、入力操作面51が押圧力を受ける箇所に拘わらず弾性部62が圧縮され、これにより可動電極部61と固定電極部63との間の距離に応じて静電容量が変化するよう選定されればよい。このように、感圧センサ部の形状をパネルモジュール35の面内において2次元的な形状とすることで、パネルモジュール35の面内の異なる位置での電極間距離のバラツキを抑えることができる。
FIG. 20 is an exploded perspective view showing a pressure-sensitive sensor unit according to a modification.
As shown in FIG. 20A, the pressure-sensitive sensor unit may be an elliptical ring (60a), three long rectangles (60b), an X-type (60c), a rectangular ring (60d), or the like. The shape and arrangement position of the pressure-sensitive sensor units 60a to 60d are such that the elastic unit 62 is compressed regardless of the position where the input operation surface 51 receives the pressing force, and thus the pressure sensor units 60a to 60d are arranged between the movable electrode unit 61 and the fixed electrode unit 63. What is necessary is just to select so that an electrostatic capacitance may change according to distance. As described above, by making the shape of the pressure-sensitive sensor portion into a two-dimensional shape in the plane of the panel module 35, it is possible to suppress variations in the distance between the electrodes at different positions in the plane of the panel module 35.

また、各感圧センサ部60a〜60dの表面全域に可動電極部61及び固定電極部63を設けてもよい。あるいは、図20(b)に示すように、各感圧センサ部60a〜60dの表面の一部分のみに可動電極部61及び固定電極部63を設けてもよい。この場合、各感圧センサ部60a〜60dにおける可動電極部61及び固定電極部63が設けられない部位は、可動電極部61及び固定電極部63が設けられた部位の合計厚みと略等しくするとよい。なお、感圧センサ部の形状に応じて、所望の弾性率を得るために弾性体62の底面積、厚み又は材料等を適宜選定すればよい。   Moreover, you may provide the movable electrode part 61 and the fixed electrode part 63 in the whole surface area of each pressure-sensitive sensor part 60a-60d. Or as shown in FIG.20 (b), you may provide the movable electrode part 61 and the fixed electrode part 63 only in a part of surface of each pressure-sensitive sensor part 60a-60d. In this case, the part where the movable electrode part 61 and the fixed electrode part 63 are not provided in each of the pressure sensitive sensor parts 60a to 60d may be substantially equal to the total thickness of the part where the movable electrode part 61 and the fixed electrode part 63 are provided. . In addition, what is necessary is just to select suitably the bottom area, thickness, material, etc. of the elastic body 62, in order to obtain a desired elasticity modulus according to the shape of a pressure-sensitive sensor part.

上記実施形態の電子機器1はタッチパネル部50を有し、このタッチパネル部50がXY座標を検出し、感圧センサ部60がZ軸方向への押圧力を検出した。しかしながら、これに限定されない。   The electronic device 1 of the above embodiment has the touch panel unit 50, the touch panel unit 50 detects the XY coordinates, and the pressure-sensitive sensor unit 60 detects the pressing force in the Z-axis direction. However, not limited to this.

図21は、変形例に係る電子機器1bを示す断面図である。
図21(a)に示すように、電子機器1bには、タッチパネル部50が設けられていない。この電子機器1bにおいては、表示パネル30の表示面31が主板部11の窓部13から露出して入力操作面の役割を担う。図21(b)に示すように、ユーザにより表示パネル部30の表示面31がZ軸方向に押圧され、感圧センサ部60の弾性部62が圧縮される。この電子機器1bにおいても、可動電極部61と固定電極部63との間の静電容量がZ軸方向の押圧力に応じた弾性部62の圧縮量による可動電極部61と固定電極部63との間の距離に応じて変化する。この電子機器1bを例えばデジタルカメラやデジタルビデオカメラ等の撮像装置に設ければ、ディスプレイにシャッターボタン等のボタン機能を付与することができる。
FIG. 21 is a cross-sectional view showing an electronic apparatus 1b according to a modification.
As shown in FIG. 21A, the electronic device 1b is not provided with the touch panel unit 50. In the electronic device 1b, the display surface 31 of the display panel 30 is exposed from the window portion 13 of the main plate portion 11 and serves as an input operation surface. As shown in FIG. 21B, the display surface 31 of the display panel unit 30 is pressed in the Z-axis direction by the user, and the elastic part 62 of the pressure-sensitive sensor unit 60 is compressed. Also in this electronic device 1b, the movable electrode unit 61, the fixed electrode unit 63, and the electrostatic capacity between the movable electrode unit 61 and the fixed electrode unit 63 depend on the amount of compression of the elastic unit 62 according to the pressing force in the Z-axis direction. Varies depending on the distance between. If the electronic apparatus 1b is provided in an imaging device such as a digital camera or a digital video camera, a button function such as a shutter button can be given to the display.

あるいは、図示を省略するが、電子機器1において、表示パネル部30を設けずにタッチパネル部50を設けてもよい。この電子機器1を例えばノート型パーソナルコンピュータ等のタッチパッドとして設ければ、XY座標を検出するともにZ軸方向の押圧力も検出可能なタッチパッドを実現できる。   Or although illustration is abbreviate | omitted, in the electronic device 1, you may provide the touch panel part 50, without providing the display panel part 30. FIG. If this electronic device 1 is provided as a touch pad of, for example, a notebook personal computer, a touch pad capable of detecting XY coordinates and also detecting a pressing force in the Z-axis direction can be realized.

上記実施形態の電子機器1において、タッチパネル部50として静電容量式のタッチパネルを用いた。しかしながら、これに限定されない。タッチパネル部50として抵抗膜式、表面弾性波式などの他の検出方式によるタッチパネルを採用してもよい。   In the electronic device 1 of the above embodiment, a capacitive touch panel is used as the touch panel unit 50. However, not limited to this. You may employ | adopt the touch panel by other detection systems, such as a resistive film type and a surface acoustic wave type, as the touch panel part 50. FIG.

上記実施形態の電子機器1において、第2の筐体部20は平坦な主板部22を有した。しかしながら、これに限定されない。例えば、主板部22から第1の筐体部10に向かう方向に突出する凸部を設けてもよい。これにより、弾性部62の最大圧縮量を調整し、可動電極部61と固定電極部63との間の最小距離を一定とすることができる。あるいは、主板部22に感圧センサ部60を位置決めするための凹部又は凸部をこの感圧センサ部60の形状に対応して設けてもよい。これにより、固定電極部63と第2の筐体部20とを接着固定するための接着層67の配設を省略することができる。   In the electronic device 1 of the above embodiment, the second casing 20 has a flat main plate 22. However, not limited to this. For example, you may provide the convex part which protrudes in the direction which goes to the 1st housing | casing part 10 from the main board part 22. FIG. Thereby, the maximum compression amount of the elastic part 62 can be adjusted, and the minimum distance between the movable electrode part 61 and the fixed electrode part 63 can be made constant. Or you may provide the recessed part or convex part for positioning the pressure-sensitive sensor part 60 in the main board part 22 corresponding to the shape of this pressure-sensitive sensor part 60. FIG. Thereby, arrangement | positioning of the contact bonding layer 67 for adhering and fixing the fixed electrode part 63 and the 2nd housing | casing part 20 is omissible.

上記実施形態の電子機器1は、静電容量方式によるタッチパネル部を備えた入力装置とし、携帯端末及びマウス操作の代替を行う入力装置を例示した。しかしながら、これらに限定されない。この種の電子機器としては、デジタルカメラ及びデジタルビデオカメラ等の撮像装置、携帯電話、携帯型オーディオビジュアル機器、携帯ゲーム機器、PDA(Personal Digital Assistance)、オンスクリーンキーボード、電子辞書、ディスプレイ装置、オーディオ/ビジュアル機器、プロジェクタ、ゲーム機器、ロボット機器、その他の電化製品等が挙げられる。   The electronic device 1 of the above embodiment is an input device that includes a capacitive touch panel unit, and exemplifies a mobile terminal and an input device that substitutes for a mouse operation. However, not limited thereto. This type of electronic equipment includes imaging devices such as digital cameras and digital video cameras, mobile phones, portable audio-visual devices, portable game devices, PDAs (Personal Digital Assistance), on-screen keyboards, electronic dictionaries, display devices, audio / Visual equipment, projectors, game equipment, robot equipment, and other electrical appliances.

1、1a、1b…電子機器
10…第1の筐体部
11…主板部
12…側板部
15…筐体
20…第2の筐体部
21…第1の部材
30…表示パネル部
31…表示面
41…第2の部材
50…タッチパネル部
51…入力操作面
60、60a、60b、60c、60d…感圧センサ部
61…可動電極部
61b、63b…電極
62…弾性部
63…固定電極部
70…回路基板
DESCRIPTION OF SYMBOLS 1, 1a, 1b ... Electronic device 10 ... 1st housing | casing part 11 ... Main board part 12 ... Side board part 15 ... Housing | casing 20 ... 2nd housing | casing part 21 ... 1st member 30 ... Display panel part 31 ... Display Surface 41 ... Second member 50 ... Touch panel portion 51 ... Input operation surface 60, 60a, 60b, 60c, 60d ... Pressure sensitive sensor portion 61 ... Moving electrode portion 61b, 63b ... Electrode 62 ... Elastic portion 63 ... Fixed electrode portion 70 ... Circuit board

Claims (11)

窓部と、前記窓部の周囲に設けられた第1の係合部とを有する第1の筐体部と、
前記窓部から露出する入力操作面と、前記入力操作面の周縁部に設けられ、前記第1の筐体部の前記第1の係合部に係合可能な第2の係合部とを有するパネルモジュールと、
第1の弾性部と、前記入力操作面に直交する第1の方向に関して前記パネルモジュールと対向する第1の電極と、前記第1の弾性部を挟んで前記第1の電極と対向する第2の電極とを有し、前記入力操作面に入力される押圧力を前記第1の電極及び前記第2の電極間の静電容量の変化として検出する感圧センサ部と、
前記第2の電極と対向する支持部を有し、前記パネルモジュールと前記支持部との間で前記第1の弾性部を前記第1の方向に第1の圧縮量で圧縮させた第1の状態で前記第1の筐体部に固定される第2の筐体部と
を具備する電子機器。
A first housing part having a window part and a first engaging part provided around the window part;
An input operation surface exposed from the window portion, and a second engagement portion provided at a peripheral portion of the input operation surface and engageable with the first engagement portion of the first housing portion. A panel module having
A first electrode facing the panel module in a first direction orthogonal to the input operation surface; and a second electrode facing the first electrode across the first elastic portion. A pressure-sensitive sensor unit that detects a pressing force input to the input operation surface as a change in capacitance between the first electrode and the second electrode;
A first support portion that is opposed to the second electrode, and the first elastic portion is compressed in the first direction by a first compression amount between the panel module and the support portion; An electronic device comprising: a second housing portion fixed to the first housing portion in a state.
請求項1に記載の電子機器であって、
前記パネルモジュールは、前記入力操作面に対する前記押圧力の入力座標を検出するタッチパネル部と、前記タッチパネル部に重ね合わせられ、前記第2の筐体の前記支持部に対向する表示パネル部とを有する
電子機器。
The electronic device according to claim 1,
The panel module includes a touch panel unit that detects input coordinates of the pressing force with respect to the input operation surface, and a display panel unit that is superimposed on the touch panel unit and faces the support unit of the second casing. Electronics.
請求項1又は2に記載の電子機器であって、
前記感圧センサ部は、前記パネルモジュールと前記第2の筐体の前記支持部との間に設けられる
電子機器。
The electronic device according to claim 1 or 2,
The pressure-sensitive sensor unit is an electronic device provided between the panel module and the support unit of the second casing.
請求項3に記載の電子機器であって、
前記第1の弾性部は、前記パネルモジュールの面内において前記第1の方向に直交する第2の方向に延在する直線形状である電子機器。
The electronic device according to claim 3,
The first elastic portion is an electronic device having a linear shape extending in a second direction orthogonal to the first direction in the plane of the panel module.
請求項4に記載の電子機器であって、
前記パネルモジュールは、略矩形状であり、
前記感圧センサ部は、前記パネルモジュールの対向する2辺に沿って配設された一対の感圧センサ部を有する電子機器。
The electronic device according to claim 4,
The panel module has a substantially rectangular shape,
The pressure-sensitive sensor unit is an electronic device having a pair of pressure-sensitive sensor units disposed along two opposing sides of the panel module.
請求項4に記載の電子機器であって、
前記パネルモジュールと前記第2の筐体の前記支持部との間に設けられた第2の弾性部
をさらに具備する電子機器。
The electronic device according to claim 4,
An electronic apparatus further comprising: a second elastic portion provided between the panel module and the support portion of the second casing.
請求項3に記載の電子機器であって、
前記感圧センサ部は、前記パネルモジュールの面内において2次元的な形状を有する
電子機器。
The electronic device according to claim 3,
The pressure-sensitive sensor unit is an electronic device having a two-dimensional shape in the plane of the panel module.
請求項1に記載の電子機器であって、
前記第2の筐体部は、前記第2の電極を前記第1の方向で位置決めする第1の部材と、前記第1の筐体部に固定される第2の部材とを有する
電子機器。
The electronic device according to claim 1,
The second housing unit includes an electronic device including a first member that positions the second electrode in the first direction, and a second member that is fixed to the first housing unit.
請求項1に記載の電子機器であって、
前記第1の弾性部の前記押圧力に応じた圧縮量は、前記押圧力に対して線形の依存性を有する電子機器。
The electronic device according to claim 1,
An electronic device in which the amount of compression corresponding to the pressing force of the first elastic portion has a linear dependence on the pressing force.
請求項9に記載の電子機器であって、
前記第1の弾性部は、前記第1の圧縮量で圧縮された第1の状態と、前記第1の圧縮量とは異なる第2の圧縮量で圧縮された第2の状態とにおいて、前記押圧力に対する線形度が所定の範囲内にある電子機器。
The electronic device according to claim 9,
In the first state where the first elastic portion is compressed with the first compression amount and the second state where the first elastic portion is compressed with a second compression amount different from the first compression amount, Electronic equipment whose linearity with respect to the pressing force is within a predetermined range.
請求項1に記載の電子機器であって、
前記感圧センサ部は、前記第1の方向に関して前記パネルモジュールと対向し、グラウンド電位に接続された第3の電極をさらに有する
電子機器。
The electronic device according to claim 1,
The pressure-sensitive sensor unit further includes a third electrode facing the panel module in the first direction and connected to a ground potential.
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