JP6601579B1 - Touch panel - Google Patents
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Abstract
【課題】円形状のセンサ領域においてタッチ位置を高精度に検出するタッチパネルを提供する。【解決手段】複数のセンサ電極部２は、センサ領域Ｒ内を正方形状に区画する中央領域Ｒ１を埋めるように形成される中央センサ電極部５と、中央領域Ｒ１の４つの角部をそれぞれ覆うようにセンサ領域Ｒ内を区画する４つの角領域Ｒ２のそれぞれに形成される２つの角センサ電極部６ａおよび６ｂと、隣り合う角領域Ｒ２の間を遮るようにセンサ領域Ｒ内を区画する４つの間領域Ｒ３を埋めるように形成される間センサ電極部７とを有し、２つの角センサ電極部６ａおよび６ｂは、センサ領域Ｒの中央部Ｃ近傍から角部近傍を通るように直線状に引かれた分割線Ｌで角領域Ｒ２を分割した２つの部分をそれぞれ埋めるように形成される。【選択図】 図１A touch panel that detects a touch position with high accuracy in a circular sensor region is provided. A plurality of sensor electrode portions 2 respectively cover a central sensor electrode portion 5 formed so as to fill a central region R1 that divides the sensor region R into a square shape, and four corners of the central region R1. In this way, the sensor region R is partitioned so as to block between the two corner sensor electrode portions 6a and 6b formed in each of the four corner regions R2 partitioning the sensor region R and the adjacent corner region R2. The two sensor electrode portions 6a and 6b are linear so as to pass from the vicinity of the central portion C of the sensor region R to the vicinity of the corner portions. Are formed so as to fill the two parts obtained by dividing the corner region R2 with the dividing line L drawn by the line. [Selection] Figure 1
Description
この発明は、タッチパネルに係り、特に、静電容量式のタッチパネルに関する。 The present invention relates to a touch panel, and more particularly to a capacitive touch panel.
従来から、画面をタッチして入力操作を行う静電容量式のタッチパネルが実用化されている。このタッチパネルは、近年、腕時計などの様々な電子機器への適用が進められており、その電子機器の画面に応じた形状に形成することが求められている。 Conventionally, a capacitive touch panel that performs an input operation by touching a screen has been put into practical use. In recent years, this touch panel has been applied to various electronic devices such as wristwatches, and is required to be formed in a shape corresponding to the screen of the electronic device.
そこで、電子機器の画面に応じた形状に形成する技術として、例えば、特許文献１には、コンピュータカーソル操作のためのインターフェース装置を含み、無線操作可能な時計マウスを形成する時計が提案されている。この時計は、円形状のセンサ領域にセンサ電極部をマトリックス状に配置することで、円形状の画面に応じたセンサ領域を形成することができる。 Therefore, as a technique for forming a shape corresponding to the screen of the electronic device, for example, Patent Document 1 proposes a watch that includes an interface device for computer cursor operation and forms a wirelessly operable watch mouse. . This timepiece can form a sensor region corresponding to a circular screen by arranging sensor electrode portions in a matrix shape in a circular sensor region.
しかしながら、特許文献１の時計は、互いに直交する第１の方向と第２の方向に全てのセンサ電極部を配列するため、センサ領域内において最も外側に配置されたセンサ電極部が、センサ領域の中央部に配置されたセンサ電極部と比べて小さく形成されることになり、この小さなセンサ電極部でタッチ位置を高精度に検出することが困難であった。 However, since the watch of Patent Document 1 arranges all the sensor electrode portions in the first direction and the second direction orthogonal to each other, the sensor electrode portion arranged on the outermost side in the sensor region is It is formed smaller than the sensor electrode portion arranged at the center, and it is difficult to detect the touch position with high accuracy with this small sensor electrode portion.
この発明は、このような従来の問題点を解消するためになされたもので、円形状のセンサ領域においてタッチ位置を高精度に検出するタッチパネルを提供することを目的とする。 The present invention has been made to solve such a conventional problem, and an object of the present invention is to provide a touch panel that detects a touch position with high accuracy in a circular sensor region.
この発明に係るタッチパネルは、基板上に設定された円形状のセンサ領域内に複数のセンサ電極部が形成されると共に複数のセンサ電極部にそれぞれ引き出し配線部が接続されたタッチパネルであって、複数のセンサ電極部は、センサ領域の中央部を含むようにセンサ領域内を正方形状または長方形状に区画する中央領域が基板上に設定され、中央領域を埋めるように形成される中央センサ電極部と、中央領域の４つの角部をそれぞれ覆うようにセンサ領域内を区画する４つの角領域が基板上に設定され、４つの角領域のそれぞれに形成される２つの角センサ電極部と、隣り合う角領域の間を遮るようにセンサ領域内を区画する４つの間領域が基板上に設定され、４つの間領域を埋めるように形成される間センサ電極部とを有し、中央領域の互いに直交する境界線と平行な方向を第１の方向および第２の方向とし、中央センサ電極部、２つの角センサ電極部および間センサ電極部は、第１の方向および第２の方向に配列するように形成され、２つの角センサ電極部は、センサ領域の中央部近傍から角部近傍を通るように直線状に引かれた分割線で角領域を分割した２つの部分をそれぞれ埋めるように形成されると共に、分割線に沿って角部とセンサ領域の境界線との間を延びるように形成された角側線状部をそれぞれ有し、引き出し配線部に接続され、複数のセンサ電極部の静電容量の変化量に応じた電気信号を検出し、電気信号に基づいてタッチ位置を算出するタッチ位置算出部をさらに有し、タッチ位置算出部は、２つの角センサ電極部のうち一方の角センサ電極部の静電容量の変化量が最大の場合に、一方の角センサ電極部の静電容量の変化量と一方の角センサ電極部に対して第１の方向に隣り合うセンサ電極部の静電容量の変化量とに基づいて第１の方向のタッチ位置を算出し、一方の角センサ電極部の静電容量の変化量と一方の角センサ電極部に対して第２の方向に隣り合うセンサ電極部の静電容量の変化量とに基づいて第２の方向のタッチ位置を算出し、一方の角センサ電極部に対して第１の方向に隣り合うセンサ電極部は、角側線状部に対向して第１の方向に隣り合う他方の角センサ電極部を含み、一方の角センサ電極部に対して第２の方向に隣り合うセンサ電極部は、角側線状部に対向して第２の方向に隣り合う他方の角センサ電極部を含むものである。 The touch panel according to the present invention is a touch panel in which a plurality of sensor electrode portions are formed in a circular sensor region set on a substrate, and lead-out wiring portions are connected to the plurality of sensor electrode portions, respectively. The sensor electrode section of the center sensor electrode section is formed so that the center area that divides the sensor area into a square shape or a rectangular shape is set on the substrate so as to include the center section of the sensor area, and is formed so as to fill the center area. The four corner regions that define the sensor region so as to cover the four corner portions of the central region are set on the substrate, and are adjacent to the two corner sensor electrode portions formed in each of the four corner regions. four between regions partitioning the sensor area to block between the corner regions are set on the substrate, and a P sensor electrode portion formed so as to fill the four interphase region, the central region The direction parallel to the orthogonal boundary line is defined as the first direction and the second direction, and the central sensor electrode unit, the two angular sensor electrode units, and the inter-sensor electrode unit are arranged in the first direction and the second direction. The two corner sensor electrode portions are formed so as to be arranged, and each of the two portions obtained by dividing the corner region by a dividing line drawn linearly so as to pass from the vicinity of the central portion of the sensor region to the vicinity of the corner portion is filled. A plurality of sensor electrode portions each having a corner-side linear portion formed so as to extend between the corner portion and the boundary line of the sensor region along the dividing line. The touch position calculator further includes a touch position calculator that detects an electrical signal corresponding to the amount of change in capacitance of the sensor and calculates a touch position based on the electrical signal. The touch position calculator is one of the two angular sensor electrode units. Capacitance of the corner sensor electrode When the amount of change is the maximum, the amount of change in the capacitance of one corner sensor electrode portion and the amount of change in the capacitance of the sensor electrode portion adjacent in the first direction with respect to one corner sensor electrode portion The touch position in the first direction is calculated based on the amount of change in the capacitance of one corner sensor electrode portion and the capacitance of the sensor electrode portion adjacent to the one corner sensor electrode portion in the second direction. The touch position in the second direction is calculated based on the change amount of the sensor electrode, and the sensor electrode part adjacent in the first direction with respect to one of the corner sensor electrode parts is opposed to the corner-side linear part. The other corner sensor electrode part adjacent to the direction, and the sensor electrode part adjacent to the second direction with respect to the one corner sensor electrode part is opposite to the corner side linear part and adjacent to the second direction. The angle sensor electrode portion is included .
ここで、互いに同じ大きさでほぼ正方形状を有する複数の中央センサ電極部が、中央領域を埋めるように中央領域に配列され、間センサ電極部は、中央センサ電極部とほぼ同じ大きさおよび形状を有し、中央領域は、４つの間領域にそれぞれ１つの間センサ電極部が配置されるような広さに形成されることが好ましい。 Here, a plurality of central sensor electrode portions having the same size and a substantially square shape are arranged in the central region so as to fill the central region, and the inter-sensor electrode portions are substantially the same size and shape as the central sensor electrode portion. Preferably, the central region is formed in such a size that one sensor electrode portion is disposed in each of the four inter-regions.
また、一方の角センサ電極部は、中央領域の境界線に沿って延びるように形成された内側線状部と、間領域の境界線に沿って延びるように形成された間側線状部とをさらに有し、タッチ位置算出部は、他方の角センサ電極部と、一方の角センサ電極部に対して間側線状部に対向して第１の方向に隣り合う間センサ電極部を第１の方向に隣り合うセンサ電極部とし、他方の角センサ電極部と、一方の角センサ電極部に対して内側線状部に対向して第２の方向に隣り合う中央センサ電極部を第２の方向に隣り合うセンサ電極部としてタッチ位置を算出することが好ましい。 Also, one corner sensor electrode unit includes an inner linear portion formed so as to extend along the boundary of the central region, and between side linear portion formed so as to extend along the boundary line between regions further comprising a touch position calculation unit, and the other corner sensor electrode unit, the first engagement cormorant between the sensor electrode unit adjacent in a direction opposite between side linear portion with respect to one corner sensor electrode unit A sensor electrode part adjacent in the first direction, the other corner sensor electrode part, and a central sensor electrode part adjacent in the second direction facing the inner linear part with respect to the one corner sensor electrode part It is preferable to calculate a touch position as a sensor electrode part adjacent in the direction of 2.
また、タッチ位置算出部は、２つの角センサ電極部のうち他方の角センサ電極部の静電容量の変化量が最大の場合に、他方の角センサ電極部の静電容量の変化量と他方の角センサ電極部に対して第１の方向に隣り合うセンサ電極部の静電容量の変化量とに基づいて第１の方向のタッチ位置を算出し、他方の角センサ電極部の静電容量の変化量と他方の角センサ電極部に対して第２の方向に隣り合うセンサ電極部の静電容量の変化量とに基づいて第２の方向のタッチ位置を算出することができる。 Further, data pitch position calculating unit, when the amount of change in the capacitance of the other corner sensor electrode unit of the two corners sensor electrode unit is the maximum, the amount of change in the capacitance of the other corner sensor electrode unit And the touch position in the first direction is calculated based on the change amount of the capacitance of the sensor electrode section adjacent to the other corner sensor electrode section in the first direction, and the static position of the other corner sensor electrode section is calculated. The touch position in the second direction can be calculated based on the amount of change in capacitance and the amount of change in capacitance of the sensor electrode portion adjacent to the other corner sensor electrode portion in the second direction.
また、他方の角センサ電極部は、中央領域の境界線に沿って延びるように形成された内側線状部と、間領域の境界線に沿って延びるように形成された間側線状部とをさらに有し、タッチ位置算出部は、他方の角センサ電極部に対して内側線状部に対向して第１の方向に隣り合う中央センサ電極部および角側線状部に対向して第１の方向に隣り合う一方の角センサ電極部を第１の方向に隣り合うセンサ電極部とし、他方の角センサ電極部に対して角側線状部に対向して第２の方向に隣り合う一方の角センサ電極部および間側線状部に対向して第２の方向に隣り合う間センサ電極部を第２の方向に隣り合うセンサ電極部としてタッチ位置を算出することが好ましい。 The other corner sensor electrode unit includes an inner linear portion formed so as to extend along the boundary of the central region, and between side linear portion formed so as to extend along the boundary line between regions The touch position calculation unit has a first opposite to the central sensor electrode part and the corner side linear part adjacent to each other in the first direction facing the inner linear part with respect to the other angular sensor electrode part. while the one of the corner sensor electrode unit adjacent in a direction to the first sensor electrode unit adjacent in the direction of, adjacent in a second direction opposite the corner-side linear portion to the other corner sensor electrode unit It is preferable that the touch position is calculated with the sensor electrode portions adjacent to each other in the second direction facing the corner sensor electrode portions and the inter-side linear portions as the sensor electrode portions adjacent in the second direction.
この発明によれば、２つの角センサ電極部が、センサ領域の中央部近傍から角部近傍を通るように直線状に引かれた分割線で角領域を分割した２つの部分をそれぞれ埋めるように形成されるので、円形状のセンサ領域においてタッチ位置を高精度に検出するタッチパネルを提供することが可能となる。 According to this invention, the two corner sensor electrode portions are respectively filled with the two portions obtained by dividing the corner region by the dividing line drawn linearly so as to pass from the vicinity of the central portion of the sensor region to the vicinity of the corner portion. Since it is formed, it is possible to provide a touch panel that detects a touch position with high accuracy in a circular sensor region.
以下、この発明の実施の形態を添付図面に基づいて説明する。
図１に、この発明の実施の形態に係るタッチパネルの構成を示す。このタッチパネルは、基板１を有し、基板１の表面上に複数のセンサ電極部２が形成されると共にセンサ電極部２の周囲に延びるように引き出し配線部３が基板１の表面上に形成され、引き出し配線部３の端部にタッチ位置算出部４が接続されている。
Embodiments of the present invention will be described below with reference to the accompanying drawings.
FIG. 1 shows a configuration of a touch panel according to an embodiment of the present invention. This touch panel has a substrate 1, a plurality of sensor electrode portions 2 are formed on the surface of the substrate 1, and a lead-out wiring portion 3 is formed on the surface of the substrate 1 so as to extend around the sensor electrode portion 2. The touch position calculation unit 4 is connected to the end of the lead-out wiring unit 3.
基板１は、円板形状を有する透明な基板本体１ａと、基板本体１ａから延びるように形成された接続部１ｂとを有し、基板本体１ａの表面上にセンサ電極部２を形成するための円形状のセンサ領域Ｒが設定されている。このセンサ領域Ｒは、中央領域Ｒ１と、４つの角領域Ｒ２と、４つの間領域Ｒ３とで区画されている。中央領域Ｒ１は、センサ領域Ｒの中央部Ｃを中心にセンサ領域Ｒ内を正方形状に区画するものである。４つの角領域Ｒ２は、中央領域Ｒ１の４つの角部をそれぞれ覆うようにセンサ領域Ｒ内を区画するものである。４つの間領域Ｒ３は、隣り合う角領域Ｒ２の間を遮るようにセンサ領域Ｒ内を区画するものである。なお、基板本体１ａは、例えばフィルム基材またはガラスなどから構成することができる。また、接続部１ｂは、例えば容易に曲げることが可能なフィルム基材から構成することができる。また、基板本体１ａと接続部１ｂは、同一材料で一体に形成することもできる。
ここで、中央領域Ｒ１の互いに直交する境界線と平行な方向をそれぞれ第１の方向Ｘおよび第２の方向Ｙとする。
The substrate 1 has a transparent substrate body 1a having a disk shape and a connection portion 1b formed so as to extend from the substrate body 1a, and is used for forming the sensor electrode portion 2 on the surface of the substrate body 1a. A circular sensor region R is set. The sensor region R is divided into a central region R1, four corner regions R2, and four inter-regions R3. The center region R1 divides the sensor region R into a square shape with the central portion C of the sensor region R as the center. The four corner regions R2 define the sensor region R so as to cover the four corners of the central region R1. The four inter-regions R3 partition the sensor region R so as to block between the adjacent corner regions R2. The substrate body 1a can be made of, for example, a film base material or glass. Moreover, the connection part 1b can be comprised from the film base material which can be bent easily, for example. Further, the substrate body 1a and the connecting portion 1b can be integrally formed of the same material.
Here, the directions parallel to the boundary lines orthogonal to each other in the central region R1 are defined as a first direction X and a second direction Y, respectively.
センサ電極部２は、中央領域Ｒ１を埋めるように互いに隣接して形成された９つの中央センサ電極部５と、４つの角領域Ｒ２のそれぞれに形成される２つの角センサ電極部６ａおよび６ｂと、４つの間領域Ｒ３をそれぞれ埋めるように形成される１つの間センサ電極部７とを有する。ここで、センサ電極部２は、例えば、酸化インジウムスズ（ＩＴＯ）などの透明導電体から構成することができる。
中央センサ電極部５は、互いに同じ大きさのほぼ正方形状を有し、第１の方向Ｘおよび第２の方向Ｙに配列するように中央領域Ｒ１内に形成されている。
The sensor electrode unit 2 includes nine central sensor electrode units 5 formed adjacent to each other so as to fill the central region R1, and two angular sensor electrode units 6a and 6b formed in each of the four angular regions R2. And one inter-sensor electrode portion 7 formed to fill each of the four inter-regions R3. Here, the sensor electrode part 2 can be comprised from transparent conductors, such as indium tin oxide (ITO), for example.
The center sensor electrode portion 5 has a substantially square shape having the same size, and is formed in the center region R1 so as to be arranged in the first direction X and the second direction Y.
角センサ電極部６ａおよび６ｂは、センサ領域Ｒの中央部Ｃから中央領域Ｒ１の角部を通るように直線状に引かれた分割線Ｌで角領域Ｒ２を分割した２つの部分をそれぞれ埋めるように形成されている。すなわち、角センサ電極部６ａおよび６ｂは、分割線Ｌを挟むように角領域Ｒ２内に形成されている。 The corner sensor electrode portions 6a and 6b respectively fill two portions obtained by dividing the corner region R2 with a dividing line L that is linearly drawn from the center portion C of the sensor region R so as to pass through the corner portion of the center region R1. Is formed. That is, the corner sensor electrode portions 6a and 6b are formed in the corner region R2 so as to sandwich the dividing line L.
角センサ電極部６ａは、中央領域Ｒ１の境界線に沿って延びるように形成された内側線状部８ａと、角領域Ｒ２の分割線Ｌに沿って延びるように形成された角側線状部８ｂと、間領域Ｒ３の境界線に沿って延びるように形成された間側線状部８ｃと、センサ領域Ｒの境界線に沿って延びるように形成された外側線状部８ｄとを有する。
同様に、角センサ電極部６ｂは、中央領域Ｒ１の境界線に沿って延びるように形成された内側線状部９ａと、角領域Ｒ２の分割線Ｌに沿って延びるように形成された角側線状部９ｂと、間領域Ｒ３の境界線に沿って延びるように形成された間側線状部９ｃと、センサ領域Ｒの境界線に沿って延びるように形成された外側線状部９ｄとを有する。
この角センサ電極部６ａと角センサ電極部６ｂは、同じ大きさおよび形状を有し、分割線Ｌに対して線対称に形成されている。
The corner sensor electrode portion 6a includes an inner linear portion 8a formed so as to extend along the boundary line of the central region R1, and a corner side linear portion 8b formed so as to extend along the dividing line L of the corner region R2. And an intermediate linear portion 8c formed so as to extend along the boundary line of the intermediate region R3, and an outer linear portion 8d formed so as to extend along the boundary line of the sensor region R.
Similarly, the corner sensor electrode portion 6b includes an inner linear portion 9a formed so as to extend along the boundary line of the central region R1, and a corner side line formed so as to extend along the dividing line L of the corner region R2. And a linear portion 9c formed so as to extend along the boundary line of the inter-region R3, and an outer linear portion 9d formed so as to extend along the boundary line of the sensor region R. .
The corner sensor electrode portion 6a and the corner sensor electrode portion 6b have the same size and shape, and are formed symmetrically with respect to the dividing line L.
間センサ電極部７は、中央センサ電極部５とほぼ同じ大きさおよび形状の正方形状に形成されている。
ここで、中央センサ電極部５とほぼ同じ大きさの間センサ電極部７が間領域Ｒ３に１つしか配置されないように、中央領域Ｒ１がセンサ領域Ｒに広く形成されていることになる。
The inter-sensor electrode portion 7 is formed in a square shape having substantially the same size and shape as the central sensor electrode portion 5.
Here, the central region R1 is widely formed in the sensor region R so that only one sensor electrode portion 7 is disposed in the intermediate region R3 while having substantially the same size as the central sensor electrode portion 5.
引き出し配線部３は、全てのセンサ電極部２に直接的に接続されて、センサ領域Ｒの外側を通って接続部１ｂまで延びるように形成されている。そして、引き出し配線部３の端部が、接続部１ｂに配置された端子部１０に接続されている。
タッチ位置算出部４は、端子部１０を介して引き出し配線部３に接続され、センサ電極部２がタッチされたときの静電容量の変化量に応じた電気信号を検出して、その電気信号に基づいてタッチ位置を算出する。
なお、基板本体１ａ全体を覆う、すなわちセンサ電極部２および引き出し配線部３を覆うように、図示しない透明な保護部が配置される。保護部は、基板本体１ａに対応した円板形状を有し、例えば絶縁樹脂などから構成することができる。
The lead wiring part 3 is formed so as to be directly connected to all the sensor electrode parts 2 and to extend to the connection part 1b through the outside of the sensor region R. And the edge part of the lead-out wiring part 3 is connected to the terminal part 10 arrange | positioned at the connection part 1b.
The touch position calculation unit 4 is connected to the lead-out wiring unit 3 via the terminal unit 10 and detects an electrical signal corresponding to the amount of change in capacitance when the sensor electrode unit 2 is touched. The touch position is calculated based on.
A transparent protective unit (not shown) is arranged so as to cover the entire substrate body 1a, that is, to cover the sensor electrode unit 2 and the lead-out wiring unit 3. The protection part has a disk shape corresponding to the substrate body 1a, and can be made of, for example, an insulating resin.
次に、この実施の形態の動作について説明する。
まず、図１に示すタッチパネルのタッチ領域Ｒがタッチされると、タッチ領域Ｒに形成された複数のセンサ電極部２のうちタッチ位置に対応するセンサ電極部２の静電容量が変化する。センサ電極部２の静電容量の変化に応じて電流が変化し、その電流の変化量に基づいてセンサ電極部２に引き出し配線部３を介して接続されたタッチ位置算出部４がタッチ位置を算出する。
Next, the operation of this embodiment will be described.
First, when the touch region R of the touch panel shown in FIG. 1 is touched, the capacitance of the sensor electrode unit 2 corresponding to the touch position among the plurality of sensor electrode units 2 formed in the touch region R changes. The current changes in accordance with the change in the capacitance of the sensor electrode unit 2, and the touch position calculation unit 4 connected to the sensor electrode unit 2 via the lead-out wiring unit 3 based on the change amount of the current determines the touch position. calculate.
ここで、タッチ領域Ｒの中央に形成された中央領域Ｒ１には、中央センサ電極部５が第１の方向Ｘおよび第２の方向Ｙに配列されている。この中央領域Ｒ１は、間領域Ｒ３に間センサ電極部７が１つしか配置されないように広く形成されている。このため、中央領域Ｒ１内により多くの中央センサ電極部５を配置することができ、タッチ位置算出部４がタッチ位置を高精度に算出することができる。 Here, in the central region R1 formed in the center of the touch region R, the central sensor electrode portions 5 are arranged in the first direction X and the second direction Y. The central region R1 is formed wide so that only one inter-sensor electrode portion 7 is disposed in the inter-region R3. For this reason, more center sensor electrode parts 5 can be arrange | positioned in center area | region R1, and the touch position calculation part 4 can calculate a touch position with high precision.
また、図２に示すように、タッチ領域Ｒ全体にわたってセンサ電極部Ｓを第１の方向Ｘおよび第２の方向に配列すると、中央領域Ｒ１の周囲に配置される一部のセンサ電極部Ｓが中央領域Ｒ１に配置されるセンサ電極部Ｓと比較して小さく形成される。例えば、角領域Ｒ２に３つのセンサ電極部Ｓが形成されることになり、２つのセンサ電極部Ｓの間に形成されたセンサ電極部Ｓ１が他のセンサ電極部Ｓと比較して非常に小さく形成される。このため、タッチ位置算出部４は、角領域Ｒ２のタッチ位置を高精度に検出できないおそれがあった。 Further, as shown in FIG. 2, when the sensor electrode portions S are arranged in the first direction X and the second direction over the entire touch region R, a part of the sensor electrode portions S arranged around the central region R1 are formed. It is formed smaller than the sensor electrode portion S disposed in the central region R1. For example, three sensor electrode portions S are formed in the corner region R2, and the sensor electrode portion S1 formed between the two sensor electrode portions S is much smaller than the other sensor electrode portions S. It is formed. For this reason, the touch position calculation unit 4 may not be able to detect the touch position of the corner region R2 with high accuracy.
そこで、図１に示すように、角領域Ｒ２を分割線Ｌで第１の方向Ｘおよび第２の方向Ｙに対して斜めに分割し、その２つの部分に角センサ電極部６ａおよび６ｂを形成する。これにより、角センサ電極部６ａおよび６ｂの形状を複雑化することなく角センサ電極部６ａおよび６ｂを大きく形成することができ、例えば６ｍｍ×６ｍｍ程度にセンサ電極部２を小さく形成した場合でも角領域Ｒ２のタッチ位置を高精度に検出することができる。また、角センサ電極部６ａおよび６ｂが、他のセンサ電極部２に対して第１の方向および第２の方向にほぼ並べて配置されて、第１の方向および第２の方向に重なる部分が少ないため、タッチ位置の演算量を抑制することができる。さらに、角センサ電極部６ａおよび６ｂにおいて第１の方向および第２の方向に重なる部分を分割線Ｌに沿って直線状に形成することで、タッチ位置の演算量をより抑制することができる。 Therefore, as shown in FIG. 1, the corner region R2 is divided obliquely with respect to the first direction X and the second direction Y by the dividing line L, and the angle sensor electrode portions 6a and 6b are formed in the two portions. To do. Accordingly, the corner sensor electrode portions 6a and 6b can be formed large without complicating the shapes of the corner sensor electrode portions 6a and 6b. For example, even when the sensor electrode portion 2 is formed small to about 6 mm × 6 mm, the corner The touch position in the region R2 can be detected with high accuracy. Further, the corner sensor electrode portions 6a and 6b are arranged substantially side by side in the first direction and the second direction with respect to the other sensor electrode portions 2, and there are few portions overlapping the first direction and the second direction. Therefore, the calculation amount of the touch position can be suppressed. Furthermore, by forming the portions overlapping the first direction and the second direction in the corner sensor electrode portions 6a and 6b in a straight line along the dividing line L, the calculation amount of the touch position can be further suppressed.
また、タッチ位置算出部４は、所定のセンサ電極部２の静電容量の変化量が最大の場合に、所定のセンサ電極部２の静電容量の変化量と、所定のセンサ電極部２に対して第１の方向Ｘおよび第２の方向Ｙに隣り合うセンサ電極部２の静電容量の変化量とに基づいてタッチ位置を算出することが好ましい。 In addition, the touch position calculation unit 4 applies the change amount of the capacitance of the predetermined sensor electrode unit 2 and the predetermined sensor electrode unit 2 when the change amount of the capacitance of the predetermined sensor electrode unit 2 is maximum. On the other hand, it is preferable to calculate the touch position based on the amount of change in the capacitance of the sensor electrode unit 2 adjacent in the first direction X and the second direction Y.
例えば、図３に示す角領域Ｒ２の角センサ電極部６ａおよびその周辺の位置Ｐがタッチされると、角センサ電極部６ａの静電容量が最も変化すると共に、角センサ電極部６ａに隣り合う角センサ電極部６ｂ、中央センサ電極部５ａ、中央センサ電極部５ｂおよび間センサ電極部７ａの静電容量も変化する。
そこで、タッチ位置算出部４は、角センサ電極部６ａの静電容量の変化量と、角センサ電極部６ａに対して第１の方向Ｘに隣り合う角センサ電極部６ｂ、間センサ電極部７ａおよび中央センサ電極部５ｂの静電容量の変化量とに基づいて、第１の方向Ｘのタッチ位置を算出する。例えば、タッチ位置算出部４は、角センサ電極部６ａ、角センサ電極部６ｂ、間センサ電極部７ａおよび中央センサ電極部５ｂの静電容量の変化量に応じて、第１の方向Ｘの座標位置を加重平均することにより第１の方向Ｘのタッチ位置を算出することができる。
For example, when the corner sensor electrode portion 6a in the corner region R2 and the surrounding position P shown in FIG. 3 are touched, the capacitance of the corner sensor electrode portion 6a changes most and is adjacent to the corner sensor electrode portion 6a. The capacitances of the corner sensor electrode part 6b, the central sensor electrode part 5a, the central sensor electrode part 5b, and the inter-sensor electrode part 7a also change.
Therefore, the touch position calculation unit 4 changes the capacitance of the corner sensor electrode unit 6a, the corner sensor electrode unit 6b adjacent to the corner sensor electrode unit 6a in the first direction X, and the inter-sensor electrode unit 7a. And the touch position of the 1st direction X is calculated based on the variation | change_quantity of the electrostatic capacitance of the center sensor electrode part 5b. For example, the touch position calculation unit 4 determines the coordinates in the first direction X according to the amount of change in capacitance of the corner sensor electrode unit 6a, the corner sensor electrode unit 6b, the inter-sensor electrode unit 7a, and the central sensor electrode unit 5b. The touch position in the first direction X can be calculated by weighted averaging the positions.
同様に、タッチ位置算出部４は、角センサ電極部６ａの静電容量の変化量と、角センサ電極部６ａに対して第２の方向Ｙに隣り合う角センサ電極部６ｂ、中央センサ電極部５ａおよび５ｂの静電容量の変化量とに基づいて、第２の方向Ｙのタッチ位置を算出する。例えば、タッチ位置算出部４は、角センサ電極部６ａ、角センサ電極部６ｂ、中央センサ電極部５ａおよび５ｂの静電容量の変化量に応じて、第２の方向Ｙの座標位置を加重平均することにより第２の方向Ｙのタッチ位置を算出することができる。 Similarly, the touch position calculation unit 4 includes the amount of change in the capacitance of the corner sensor electrode unit 6a, the corner sensor electrode unit 6b adjacent to the corner sensor electrode unit 6a in the second direction Y, and the center sensor electrode unit. The touch position in the second direction Y is calculated based on the capacitance change amount of 5a and 5b. For example, the touch position calculation unit 4 calculates the weighted average of the coordinate positions in the second direction Y according to the amount of change in capacitance of the corner sensor electrode unit 6a, the corner sensor electrode unit 6b, and the center sensor electrode units 5a and 5b. By doing so, the touch position in the second direction Y can be calculated.
このように、タッチ位置算出部４が、角センサ電極部６ａの静電容量の変化量だけでなく、角センサ電極部６ａに対して第１の方向Ｘおよび第２の方向Ｙに隣り合うセンサ電極部２の静電容量の変化量に基づいてタッチ位置を算出するため、タッチ位置をより高精度に算出することができる。
このとき、タッチ位置算出部４は、中央センサ電極部５ｂを除いて、角センサ電極部６ａ、角センサ電極部６ｂおよび間センサ電極部７ａの静電容量の変化量に基づいて第１の方向Ｘのタッチ位置を算出すると共に、角センサ電極部６ａ、角センサ電極部６ｂ、中央センサ電極部５ａの静電容量の変化量に基づいて第２の方向Ｙのタッチ位置を算出することが好ましい。すなわち、タッチ位置算出部４は、角センサ電極部６ａの静電容量の変化量と、角センサ電極部６ａの角側線状部８ｂおよび間側線状部８ｃに対向して第１の方向Ｘに隣り合う角センサ電極部６ｂおよび間センサ電極部７ａの静電容量の変化量とに基づいて第１の方向Ｘのタッチ位置を算出し、角センサ電極部６ａの静電容量の変化量と、角センサ電極部６ａの内側線状部８ａおよび角側線状部８ｂに対向して第２の方向Ｙに隣り合う中央センサ電極部５ａおよび角センサ電極部６ｂの静電容量の変化量とに基づいて第２の方向Ｙのタッチ位置を算出する。これにより、タッチ位置算出部４は、タッチ位置の演算量を抑制しつつタッチ位置を高精度に算出することができる。
As described above, the touch position calculation unit 4 is not only the amount of change in the capacitance of the corner sensor electrode unit 6a, but also the sensor adjacent to the corner sensor electrode unit 6a in the first direction X and the second direction Y. Since the touch position is calculated based on the amount of change in the capacitance of the electrode unit 2, the touch position can be calculated with higher accuracy.
At this time, the touch position calculation unit 4 uses the first direction based on the amount of change in capacitance of the corner sensor electrode unit 6a, the corner sensor electrode unit 6b, and the inter-sensor electrode unit 7a except for the central sensor electrode unit 5b. Preferably, the X touch position is calculated, and the touch position in the second direction Y is calculated based on the amount of change in capacitance of the corner sensor electrode portion 6a, the corner sensor electrode portion 6b, and the central sensor electrode portion 5a. . That is, the touch position calculation unit 4 is arranged in the first direction X so as to face the change amount of the electrostatic capacitance of the corner sensor electrode unit 6a and the corner side linear portion 8b and the intermediate side linear portion 8c of the corner sensor electrode unit 6a. The touch position in the first direction X is calculated based on the change amount of the electrostatic capacitance of the adjacent corner sensor electrode portion 6b and the inter-space sensor electrode portion 7a, and the change amount of the electrostatic capacitance of the corner sensor electrode portion 6a, Based on the amount of change in capacitance of the central sensor electrode portion 5a and the corner sensor electrode portion 6b that are adjacent to the inner linear portion 8a and the corner side linear portion 8b of the corner sensor electrode portion 6a and are adjacent to each other in the second direction Y. To calculate the touch position in the second direction Y. Thereby, the touch position calculation unit 4 can calculate the touch position with high accuracy while suppressing the calculation amount of the touch position.
一方、角領域Ｒ２の角センサ電極部６ｂおよびその周辺がタッチされると、角センサ電極部６ｂの静電容量が最も変化すると共に、角センサ電極部６ｂに隣り合う角センサ電極部６ａ、中央センサ電極部５ａ、中央センサ電極部５ｃおよび間センサ電極部７ｂの静電容量も変化する。
そこで、タッチ位置算出部４は、角センサ電極部６ｂの静電容量の変化量と、角センサ電極部６ｂに対して第１の方向Ｘに隣り合う角センサ電極部６ａ、中央センサ電極部５ａおよび５ｃの静電容量の変化量とに基づいて、第１の方向Ｘのタッチ位置を算出する。例えば、タッチ位置算出部４は、角センサ電極部６ｂ、角センサ電極部６ａ、中央センサ電極部５ａおよび５ｃの静電容量の変化量に応じて、第１の方向Ｘの座標位置を加重平均することにより第１の方向Ｘのタッチ位置を算出することができる。
On the other hand, when the corner sensor electrode portion 6b in the corner region R2 and its periphery are touched, the capacitance of the corner sensor electrode portion 6b changes most, and the corner sensor electrode portion 6a adjacent to the corner sensor electrode portion 6b has a center. The capacitances of the sensor electrode unit 5a, the central sensor electrode unit 5c, and the inter-sensor electrode unit 7b also change.
Therefore, the touch position calculation unit 4 changes the capacitance of the corner sensor electrode unit 6b, the corner sensor electrode unit 6a adjacent to the corner sensor electrode unit 6b in the first direction X, and the center sensor electrode unit 5a. And the touch position in the first direction X is calculated based on the amount of change in capacitance of 5c. For example, the touch position calculation unit 4 performs weighted averaging of the coordinate positions in the first direction X according to the amount of change in capacitance of the corner sensor electrode unit 6b, the corner sensor electrode unit 6a, and the center sensor electrode units 5a and 5c. By doing so, the touch position in the first direction X can be calculated.
同様に、タッチ位置算出部４は、角センサ電極部６ｂの静電容量の変化量と、角センサ電極部６ｂに対して第２の方向Ｙに隣り合う角センサ電極部６ａ、間センサ電極部７ｂおよび中央センサ電極部５ｃの静電容量の変化量とに基づいて、第２の方向Ｙのタッチ位置を算出する。例えば、タッチ位置算出部４は、角センサ電極部６ｂ、角センサ電極部６ａ、間センサ電極部７ｂおよび中央センサ電極部５ｃの静電容量の変化量に応じて、第２の方向Ｙの座標位置を加重平均することにより第２の方向Ｙのタッチ位置を算出することができる。 Similarly, the touch position calculation unit 4 includes the change amount of the capacitance of the corner sensor electrode unit 6b, the corner sensor electrode unit 6a adjacent to the corner sensor electrode unit 6b in the second direction Y, and the inter-sensor electrode unit. The touch position in the second direction Y is calculated based on the amount of change in capacitance of 7b and the central sensor electrode portion 5c. For example, the touch position calculation unit 4 determines the coordinates in the second direction Y according to the amount of change in capacitance of the corner sensor electrode unit 6b, the corner sensor electrode unit 6a, the inter-sensor electrode unit 7b, and the central sensor electrode unit 5c. The touch position in the second direction Y can be calculated by weighted averaging the positions.
このように、タッチ位置算出部４が、角センサ電極部６ｂの静電容量の変化量だけでなく、角センサ電極部６ｂに対して第１の方向Ｘおよび第２の方向Ｙに隣り合うセンサ電極部２の静電容量の変化量に基づいてタッチ位置を算出するため、タッチ位置をより高精度に算出することができる。
このとき、タッチ位置算出部４は、中央センサ電極部５ｃを除いて、角センサ電極部６ｂ、角センサ電極部６ａおよび中央センサ電極部５ａの静電容量の変化量に基づいて第１の方向Ｘのタッチ位置を算出すると共に、角センサ電極部６ｂ、角センサ電極部６ａおよび間センサ電極部７ｂの静電容量の変化量に基づいて第２の方向Ｙのタッチ位置を算出することが好ましい。すなわち、タッチ位置算出部４は、角センサ電極部６ｂの静電容量の変化量と、角センサ電極部６ｂの内側線状部９ａおよび角側線状部９ｂに対向して第１の方向Ｘに隣り合う中央センサ電極部５ａおよび角センサ電極部６ａの静電容量の変化量とに基づいて第１の方向Ｘのタッチ位置を算出し、角センサ電極部６ｂの静電容量の変化量と、角センサ電極部６ｂの角側線状部９ｂおよび間側線状部９ｃに対向して第２の方向Ｙに隣り合う角センサ電極部６ａおよび間センサ電極部７ｂの静電容量の変化量とに基づいて第２の方向Ｙのタッチ位置を算出する。これにより、タッチ位置算出部４は、タッチ位置の演算量を抑制しつつタッチ位置を高精度に算出することができる。
As described above, the touch position calculation unit 4 is not only the amount of change in the capacitance of the corner sensor electrode unit 6b, but also the sensor adjacent to the corner sensor electrode unit 6b in the first direction X and the second direction Y. Since the touch position is calculated based on the amount of change in the capacitance of the electrode unit 2, the touch position can be calculated with higher accuracy.
At this time, the touch position calculation unit 4 uses the first direction based on the amount of change in capacitance of the corner sensor electrode unit 6b, the corner sensor electrode unit 6a, and the center sensor electrode unit 5a except for the center sensor electrode unit 5c. Preferably, the X touch position is calculated, and the touch position in the second direction Y is calculated based on the amount of change in capacitance of the corner sensor electrode portion 6b, the corner sensor electrode portion 6a, and the inter-sensor electrode portion 7b. . That is, the touch position calculation unit 4 is arranged in the first direction X so as to face the change amount of the electrostatic capacitance of the corner sensor electrode unit 6b and the inner linear portion 9a and the corner side linear portion 9b of the corner sensor electrode portion 6b. The touch position in the first direction X is calculated based on the change amount of the capacitance of the adjacent central sensor electrode portion 5a and the corner sensor electrode portion 6a, and the change amount of the capacitance of the corner sensor electrode portion 6b, Based on the amount of change in the capacitance of the corner sensor electrode portion 6a and the inter-sensor electrode portion 7b that are adjacent to each other in the second direction Y so as to face the corner-side linear portion 9b and the inter-side linear portion 9c of the corner sensor electrode portion 6b. To calculate the touch position in the second direction Y. Thereby, the touch position calculation unit 4 can calculate the touch position with high accuracy while suppressing the calculation amount of the touch position.
なお、図３に示すように、角センサ電極部６ａは座標の原点に対して第２の方向Ｙに隔たりＧ１が生じており、タッチ位置算出部４は、算出されたタッチ位置を隔たりＧ１に応じて補正することが好ましい。例えば、タッチ位置算出部４は、角センサ電極部６ａの静電容量の変化量が最大の場合に、角センサ電極部６ａの静電容量の変化量と、角センサ電極部６ａに対して第２の方向Ｙに隣り合う中央センサ電極部５ａの静電容量の変化量との差に基づいて隔たりＧ１を補正したタッチ位置を算出することができる。
同様に、角センサ電極部６ｂは座標の原点に対して第１の方向Ｘに隔たりＧ２が生じており、タッチ位置算出部４は、算出されたタッチ位置を隔たりＧ２に応じて補正することが好ましい。例えば、タッチ位置算出部４は、角センサ電極部６ｂの静電容量の変化量が最大の場合に、角センサ電極部６ｂの静電容量の変化量と、角センサ電極部６ｂに対して第１の方向Ｘに隣り合う中央センサ電極部５ａの静電容量の変化量との差に基づいて隔たりＧ２を補正したタッチ位置を算出することができる。
As shown in FIG. 3, the angle sensor electrode unit 6a has a gap G1 in the second direction Y with respect to the origin of the coordinates, and the touch position calculation unit 4 separates the calculated touch position from the G1. It is preferable to correct accordingly. For example, when the change amount of the electrostatic capacitance of the corner sensor electrode unit 6a is the maximum, the touch position calculation unit 4 performs the second change with respect to the change amount of the electrostatic capacitance of the corner sensor electrode unit 6a and the angular sensor electrode unit 6a. It is possible to calculate the touch position in which the gap G1 is corrected based on the difference from the change amount of the electrostatic capacitance of the central sensor electrode part 5a adjacent in the direction Y of 2.
Similarly, the angle sensor electrode unit 6b has a gap G2 in the first direction X with respect to the origin of the coordinates, and the touch position calculation unit 4 can correct the calculated touch position according to the gap G2. preferable. For example, when the change amount of the electrostatic capacitance of the corner sensor electrode unit 6b is the maximum, the touch position calculation unit 4 performs the second change with respect to the change amount of the electrostatic capacitance of the corner sensor electrode unit 6b and the angular sensor electrode unit 6b. It is possible to calculate the touch position in which the gap G2 is corrected based on the difference from the change amount of the capacitance of the central sensor electrode part 5a adjacent in the direction X of 1.
本実施の形態によれば、角センサ電極部６ａおよび６ｂが、角領域Ｒ２を分割線Ｌで斜めに分割した２つの部分をそれぞれ埋めるように形成されるため、円形状のセンサ領域Ｒにおいて角センサ電極部６ａおよび６ｂを大きく形成することができ、角領域Ｒ２のタッチ位置を高精度に検出することができる。 According to the present embodiment, the corner sensor electrode portions 6a and 6b are formed so as to fill the two portions obtained by obliquely dividing the corner region R2 with the dividing line L. The sensor electrode portions 6a and 6b can be formed large, and the touch position of the corner region R2 can be detected with high accuracy.
なお、上記の実施の形態では、中央領域Ｒ１は、センサ領域Ｒ内を正方形状に区画するように設定されたが、センサ領域Ｒ内を長方形状に区画するように設定することもできる。
また、上記の実施の形態では、中央領域Ｒ１は、センサ領域Ｒの中央部Ｃを中心にセンサ領域Ｒ内を正方形状に区画するように設定されたが、センサ領域Ｒの中央部Ｃを含むようにセンサ領域Ｒ内を区画できればよく、これに限られるものではない。
In the above-described embodiment, the central region R1 is set so as to partition the sensor region R into a square shape, but may be set so as to partition the sensor region R into a rectangular shape.
In the above embodiment, the central region R1 is set so as to divide the sensor region R into a square shape with the central portion C of the sensor region R as the center, but includes the central portion C of the sensor region R. As long as the sensor region R can be partitioned as described above, the present invention is not limited to this.
また、上記の実施の形態では、中央領域Ｒ１に複数の中央センサ電極部５が形成されたが、中央領域Ｒ１を埋めるように形成されていればよく、１つの中央センサ電極部５を形成することもできる。
また、上記の実施の形態では、間領域Ｒ３に１つの間センサ電極部７が形成されたが、間領域Ｒ３を埋めるように形成されていればよく、複数の間センサ電極部７を形成することもできる。
Further, in the above-described embodiment, the plurality of central sensor electrode portions 5 are formed in the central region R1, but it is only necessary to form the central region R1 so as to form one central sensor electrode portion 5. You can also.
Further, in the above embodiment, one inter-sensor electrode portion 7 is formed in the inter-region R3. However, it is only necessary to form the inter-region R3, and a plurality of inter-sensor electrode portions 7 are formed. You can also.
また、上記の実施の形態では、中央センサ電極部５および間センサ電極部７は、ほぼ同じ大きさの正方形状を有するように形成されたが、中央領域Ｒ１および間領域Ｒ３をそれぞれ埋めるように形成されていればよく、これに限られるものではない。
また、上記の実施の形態では、分割線Ｌは、センサ領域Ｒの中央部Ｃから中央領域Ｒ１の角部を通るように引かれたが、センサ領域Ｒの中央部Ｃ近傍から中央領域Ｒ１の角部近傍を通るように引かれていればよく、これに限られるものではない。すなわち、分割線Ｌは、タッチ位置の算出の精度が大きく低下しない範囲でセンサ領域Ｒの中央部Ｃおよび中央領域Ｒ１の角部からずらすことができる。
Further, in the above embodiment, the central sensor electrode portion 5 and the intermediate sensor electrode portion 7 are formed so as to have a square shape having substantially the same size, but the central region R1 and the intermediate region R3 are filled, respectively. As long as it is formed, it is not limited to this.
In the above embodiment, the dividing line L is drawn from the central portion C of the sensor region R so as to pass through the corner portion of the central region R1, but from the vicinity of the central portion C of the sensor region R to the central region R1. What is necessary is just to be drawn so that it may pass the corner | angular part vicinity, It is not restricted to this. That is, the dividing line L can be shifted from the central portion C of the sensor region R and the corner portion of the central region R1 within a range in which the accuracy of calculating the touch position is not greatly reduced.
１ 基板、１ａ 基板本体、１ｂ 接続部、２ センサ電極部、３ 引き出し配線部、４ タッチ位置算出部、５，５ａ，５ｂ，５ｃ 中央センサ電極部、６ａ，６ｂ 角センサ電極部、７，７ａ，７ｂ 間センサ電極部、８ａ，９ａ 内側線状部、８ｂ，９ｂ 角側線状部、８ｃ，９ｃ 間側線状部、８ｄ，９ｄ 外側線状部、１０ 端子部、Ｒ センサ領域、Ｒ１ 中央領域、Ｒ２ 角領域、Ｒ３ 間領域、Ｃ センサ領域の中央部、Ｘ 第１の方向、Ｙ 第２の方向、Ｌ 分割線、Ｓ，Ｓ１ センサ電極部、Ｇ１，Ｇ２ 隔たり。 DESCRIPTION OF SYMBOLS 1 Board | substrate, 1a Board | substrate body, 1b Connection part, 2 Sensor electrode part, 3 Lead-out wiring part, 4 Touch position calculation part, 5, 5a, 5b, 5c Center sensor electrode part, 6a, 6b Angular sensor electrode part, 7, 7a , 7b sensor electrode part, 8a, 9a inner linear part, 8b, 9b square side linear part, 8c, 9c intermediate side linear part, 8d, 9d outer linear part, 10 terminal part, R sensor area, R1 central area , R2 corner area, R3 area, C sensor area center, X first direction, Y second direction, L dividing line, S, S1 sensor electrode part, G1, G2 distance.
Claims (5)
前記複数のセンサ電極部は、
前記センサ領域の中央部を含むように前記センサ領域内を正方形状または長方形状に区画する中央領域が前記基板上に設定され、前記中央領域を埋めるように形成される中央センサ電極部と、
前記中央領域の４つの角部をそれぞれ覆うように前記センサ領域内を区画する４つの角領域が前記基板上に設定され、前記４つの角領域のそれぞれに形成される２つの角センサ電極部と、
隣り合う前記角領域の間を遮るように前記センサ領域内を区画する４つの間領域が前記基板上に設定され、前記４つの間領域を埋めるように形成される間センサ電極部と
を有し、
前記中央領域の互いに直交する境界線と平行な方向を第１の方向および第２の方向とし、
前記中央センサ電極部、前記２つの角センサ電極部および前記間センサ電極部は、前記第１の方向および前記第２の方向に配列するように形成され、
前記２つの角センサ電極部は、前記センサ領域の中央部近傍から前記角部近傍を通るように直線状に引かれた分割線で前記角領域を分割した２つの部分をそれぞれ埋めるように形成されると共に、前記分割線に沿って前記角部と前記センサ領域の境界線との間を延びるように形成された角側線状部をそれぞれ有し、
前記引き出し配線部に接続され、前記複数のセンサ電極部の静電容量の変化量に応じた電気信号を検出し、前記電気信号に基づいてタッチ位置を算出するタッチ位置算出部をさらに有し、
前記タッチ位置算出部は、
前記２つの角センサ電極部のうち一方の角センサ電極部の静電容量の変化量が最大の場合に、前記一方の角センサ電極部の静電容量の変化量と前記一方の角センサ電極部に対して前記第１の方向に隣り合う前記センサ電極部の静電容量の変化量とに基づいて前記第１の方向のタッチ位置を算出し、前記一方の角センサ電極部の静電容量の変化量と前記一方の角センサ電極部に対して前記第２の方向に隣り合う前記センサ電極部の静電容量の変化量とに基づいて前記第２の方向のタッチ位置を算出し、
前記一方の角センサ電極部に対して前記第１の方向に隣り合う前記センサ電極部は、前記角側線状部に対向して前記第１の方向に隣り合う他方の角センサ電極部を含み、前記一方の角センサ電極部に対して前記第２の方向に隣り合う前記センサ電極部は、前記角側線状部に対向して前記第２の方向に隣り合う他方の角センサ電極部を含むタッチパネル。 A touch panel in which a plurality of sensor electrode portions are formed in a circular sensor region set on a substrate and a lead-out wiring portion is connected to each of the plurality of sensor electrode portions,
The plurality of sensor electrode portions are:
A central region that divides the sensor region into a square shape or a rectangular shape so as to include the central portion of the sensor region is set on the substrate, and a central sensor electrode portion formed to fill the central region;
Four corner regions that divide the sensor region so as to cover the four corners of the central region are set on the substrate, and two angle sensor electrode portions formed in each of the four corner regions; ,
Four inter-regions defining the sensor region so as to block between the adjacent corner regions are set on the substrate, and a sensor electrode portion is formed so as to fill the four inter-regions. ,
The direction parallel to the boundary lines orthogonal to each other in the central region is a first direction and a second direction,
The central sensor electrode portion, the two angular sensor electrode portions, and the intermediate sensor electrode portion are formed to be arranged in the first direction and the second direction,
The two corner sensor electrode portions are formed so as to respectively fill two portions obtained by dividing the corner region with a dividing line drawn linearly from the vicinity of the central portion of the sensor region to the vicinity of the corner portion. that together has a square side line portion formed so as to extend between the boundary line between the dividing line the corner along the sensor area, respectively,
A touch position calculation unit that is connected to the lead-out wiring unit, detects an electrical signal corresponding to the amount of change in capacitance of the plurality of sensor electrode units, and calculates a touch position based on the electrical signal;
The touch position calculation unit
When the amount of change in capacitance of one of the two angle sensor electrode portions is the maximum, the amount of change in capacitance of the one corner sensor electrode portion and the one angle sensor electrode portion The touch position in the first direction is calculated based on the amount of change in the capacitance of the sensor electrode portion adjacent in the first direction, and the capacitance of the one corner sensor electrode portion is calculated. Calculating the touch position in the second direction based on the amount of change and the amount of change in the capacitance of the sensor electrode adjacent to the one corner sensor electrode in the second direction;
The sensor electrode part adjacent to the one corner sensor electrode part in the first direction includes the other corner sensor electrode part adjacent to the corner side linear part and adjacent to the first direction, The touch panel including the sensor electrode portion adjacent to the one corner sensor electrode portion in the second direction includes the other corner sensor electrode portion adjacent to the corner-side linear portion and adjacent to the second direction. .
前記間センサ電極部は、前記中央センサ電極部とほぼ同じ大きさおよび形状を有し、
前記中央領域は、前記４つの間領域にそれぞれ１つの前記間センサ電極部が配置されるような広さに形成される請求項１に記載のタッチパネル。 A plurality of the central sensor electrode portions having the same size and having a substantially square shape are arranged in the central region so as to fill the central region,
The inter-sensor electrode portion has substantially the same size and shape as the central sensor electrode portion,
The touch panel as set forth in claim 1, wherein the central region is formed in such a size that one sensor electrode portion is disposed in each of the four inter-regions.
前記タッチ位置算出部は、前記他方の角センサ電極部と、前記一方の角センサ電極部に対して前記間側線状部に対向して前記第１の方向に隣り合う前記間センサ電極部を前記第１の方向に隣り合う前記センサ電極部とし、前記他方の角センサ電極部と、前記一方の角センサ電極部に対して前記内側線状部に対向して前記第２の方向に隣り合う前記中央センサ電極部を前記第２の方向に隣り合う前記センサ電極部としてタッチ位置を算出する請求項１または２に記載のタッチパネル。 The one corner sensor electrode unit, said inner linear portion formed so as to extend along the boundary of the central region and the inter-between side linear portion formed so as to extend along the boundary of the region And
The touch position calculation section, the other and the corner sensor electrode unit, opposite to said first Urn case adjacent to the forward direction SL between the sensor electrode on the between-side linear portion relative angular sensor electrode unit of the one And the other corner sensor electrode portion and the one corner sensor electrode portion facing the inner linear portion in the second direction. the touch panel according to claim 1 or 2 calculates a touch position the central sensor electrode portion adjacent as the sensor electrode unit adjacent in the second direction.
前記タッチ位置算出部は、前記他方の角センサ電極部に対して前記内側線状部に対向して前記第１の方向に隣り合う前記中央センサ電極部および前記角側線状部に対向して前記第１の方向に隣り合う一方の角センサ電極部を前記第１の方向に隣り合う前記センサ電極部とし、前記他方の角センサ電極部に対して前記角側線状部に対向して前記第２の方向に隣り合う前記一方の角センサ電極部および前記間側線状部に対向して前記第２の方向に隣り合う前記間センサ電極部を前記第２の方向に隣り合う前記センサ電極部としてタッチ位置を算出する請求項４に記載のタッチパネル。 The other corner sensor electrode unit, said inner linear portion formed so as to extend along the boundary of the central region and the inter-between side linear portion formed so as to extend along the boundary of the region And
The touch position calculation unit is opposed to the central sensor electrode part and the corner side linear part that are adjacent to the inner linear part in the first direction with respect to the other angular sensor electrode part. one corner sensor electrode unit adjacent to the first direction and the sensor electrode unit adjacent to said first direction, said opposite the angle-side linear portion relative to the other corner sensor electrode unit first The one sensor sensor portion adjacent in the direction of 2 and the intermediate sensor electrode portion adjacent in the second direction so as to face the intermediate linear portion are used as the sensor electrode portions adjacent in the second direction. The touch panel according to claim 4 which calculates a touch position.
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