TWI442295B

TWI442295B - Positioning method and driving apparatus for touch panel

Info

Publication number: TWI442295B
Application number: TW99136039A
Authority: TW
Inventors: Po Yang Chen; Po Sheng Shih; Chien Yung Cheng
Original assignee: Innolux Corp
Priority date: 2010-10-22
Filing date: 2010-10-22
Publication date: 2014-06-21
Also published as: TW201218051A

Description

觸控面板的定位方法與驅動裝置 Touch panel positioning method and driving device

本發明係關於一種觸控面板，且特別係關於一種觸控面板的定位方法與驅動裝置。 The present invention relates to a touch panel, and in particular to a positioning method and a driving device for a touch panel.

為了達到更便利、體積更輕巧化以及更人性化的目的，許多資訊產品的輸入方式已由傳統之鍵盤或滑鼠等裝置，轉變為使用觸控面板作為輸入的方式。觸控面板可組裝在諸多種類的平面顯示器上，以使平面顯示器兼具顯示畫面以及輸入操作資訊的功能。傳統觸控面板主要包括電阻式、電容式、紅外線式以及表面聲波式。不同類型的觸控面板各自具有其優缺點，例如電容式觸控面板具有質感佳、觸控力道小等優點，但是價格較為昂貴。降低觸控面板的成本，以及對觸碰點進行精確定位，一直是本領域的課題。 In order to achieve more convenience, lighter weight and more humane purposes, many information products have been converted from traditional keyboards or mice to devices that use touch panels as input. The touch panel can be assembled on many types of flat-panel displays, so that the flat-panel display has both a display screen and input operation information. The conventional touch panel mainly includes a resistive type, a capacitive type, an infrared type, and a surface acoustic wave type. Different types of touch panels each have their advantages and disadvantages. For example, a capacitive touch panel has the advantages of good texture and small touch force, but the price is relatively expensive. Reducing the cost of the touch panel and accurately locating the touch points has been a subject in the field.

有鑑於此，本發明提供一種觸控面板的定位方法與驅動裝置，可以應用於不同類型的觸控面板，以及對觸碰點進行精確定位。 In view of this, the present invention provides a positioning method and a driving device for a touch panel, which can be applied to different types of touch panels, and precise positioning of touch points.

本發明實施例提出一種觸控面板的定位方法。該觸控面板包含具有導電異向性的導電層與複數電極對，其中這些電極對各自包含一第一電極與一第二電極。該導電層沿第一軸向的二個對向側分別為第一側與第二側。所述第一電極配置於該導電層的第一側，而所述第二電極配置於該導電層的第二側。該定位方法包括感測複數第一電極與複數第二電極而獲得複數感測值。於這些第一電極的感測值中定義第一相對極值部，其中該第一相對極值部至少具有第一電極感測值中的第一相對極值。於這些第二電極的感測值中定義第二相對極值部，其中該第二相對極值部至少具有第二電極感測值中的第二相對極值。計算該第一相對極值部與該第二相對極值部的感測值比值。使用該感測值比值而計算觸碰點於該觸控面板第一軸向的位置。 The embodiment of the invention provides a positioning method of a touch panel. The touch panel comprises a conductive layer having conductive anisotropy and a plurality of electrode pairs, wherein the pair of electrodes each comprise a first electrode and a second electrode. The two opposite sides of the conductive layer along the first axial direction are a first side and a second side, respectively. The first electrode is disposed on a first side of the conductive layer, and the second electrode is disposed on a second side of the conductive layer. The positioning method includes sensing a plurality of first electrodes and a plurality of second electrodes to obtain a complex sense Measured value. A first relative extreme portion is defined in the sensed values of the first electrodes, wherein the first relative extreme portion has at least a first relative extreme value of the first electrode sensed values. A second relative extreme portion is defined in the sensed values of the second electrodes, wherein the second relative extreme portion has at least a second relative extreme value of the second electrode sensed values. A ratio of the sensed values of the first relative extreme portion to the second relative extreme portion is calculated. The position of the touch point in the first axial direction of the touch panel is calculated using the sensed value ratio.

本發明實施例提出一種觸控面板的驅動裝置。該觸控面板包含具有導電異向性的導電層，其中該導電層沿第一軸向的二個對向側分別為第一側與第二側。該驅動裝置包括複數電極對、一選擇器、一感測電路以及一微控制器。該些電極對各自包含一第一電極與一第二電極。這些第一電極配置於導電層的第一側。這些第二電極對配置於導電層的第二側。選擇器連接至導電層的第一電極與第二電極。感測電路連接至選擇器。感測電路透過選擇器驅動與感測第一電極與第二電極而獲得複數感測值。微控制器連接至感測電路以接收這些感測值。其中，於這些第一電極的感測值中定義第一相對極值部，且第一相對極值部至少具有這些第一電極的感測值中的第一相對極值；以及於這些第二電極的感測值中定義第二相對極值部，且第二相對極值部至少具有這些第二電極的感測值中的第二相對極值。微控制器計算第一相對極值部與第二相對極值部的感測值比值。接下來，微控制器使用該感測值比值而計算觸碰點於觸控面板上的第一軸向位置。 Embodiments of the present invention provide a driving device for a touch panel. The touch panel comprises a conductive layer having conductive anisotropy, wherein the two opposite sides of the conductive layer along the first axial direction are a first side and a second side, respectively. The driving device includes a plurality of electrode pairs, a selector, a sensing circuit, and a microcontroller. The pair of electrodes each include a first electrode and a second electrode. These first electrodes are disposed on a first side of the conductive layer. These second electrode pairs are disposed on the second side of the conductive layer. A selector is coupled to the first electrode and the second electrode of the conductive layer. The sensing circuit is connected to the selector. The sensing circuit drives and senses the first electrode and the second electrode through the selector to obtain a complex sensed value. A microcontroller is coupled to the sensing circuit to receive the sensed values. Wherein the first relative extremum portion is defined in the sensed values of the first electrodes, and the first relative extremum portion has at least a first relative extremum of the sensed values of the first electrodes; and the second A second relative extreme portion is defined in the sensed value of the electrode, and the second relative extreme portion has at least a second relative extreme value of the sensed values of the second electrodes. The microcontroller calculates a ratio of sensed values of the first relative extreme portion and the second relative extreme portion. Next, the microcontroller uses the sensed value ratio to calculate a first axial position of the touch point on the touch panel.

在本發明之一實施例中，上述計算觸碰點於第一軸向位置的步驟包括：若該第一相對極值部的感測值小於該第二相對極值部的感測值，則該觸碰點於該第一軸向位置y=L÷(2r)，其中 L為該些第一電極至該些第二電極的距離，r為所述感測值比值；若該第一相對極值部的感測值等於該第二相對極值部的感測值，則y=L÷2；以及若該第一相對極值部的感測值大於該第二相對極值部的感測值，則y=L-(L×r)÷2。 In an embodiment of the present invention, the step of calculating the touch point at the first axial position comprises: if the sensed value of the first relative extreme portion is smaller than the sensed value of the second relative extreme portion, The touch point is at the first axial position y=L÷(2r), wherein L is a distance from the first electrodes to the second electrodes, and r is the ratio of the sensed values; if the sensed value of the first relative extreme portion is equal to the sensed value of the second relative extreme portion, Then y=L÷2; and if the sensed value of the first relative extreme portion is greater than the sensed value of the second relative extreme portion, then y=L−(L×r)÷2.

為讓本發明之上述特徵和優點能更明顯易懂，下文特舉實施例，並配合所附圖式作詳細說明如下。 The above described features and advantages of the present invention will be more apparent from the following description.

圖1A為依照本發明一實施例說明電容式觸控面板100與驅動裝置150的示意圖。圖1B為圖1A之觸控面板100沿剖線A-A’繪示的局部剖面示意圖。在圖1A與圖1B中引入笛卡兒座標系統(Cartesian coordinate system)，其包括相互垂直的X軸方向、Y軸方向和Z軸方向。觸控面板100包含導電層110、保護層(cover lens)120以及基板102。導電層110配置於基板102上，而保護層120則配置於導電層110上。導電層110具有導電異向性(Anisotropic Conductivity)，亦即，導電薄膜110在兩個不同方向上具有不同的阻抗性。例如，導電層110具有圖1A所示之低阻抗方向D以及高阻抗方向H，其中低阻抗方向D和高阻抗方向H可為垂直。於本實施例中，導電層110的低阻抗方向D為Y軸方向。 FIG. 1A is a schematic diagram illustrating a capacitive touch panel 100 and a driving device 150 according to an embodiment of the invention. 1B is a partial cross-sectional view of the touch panel 100 of FIG. 1A taken along line A-A'. A Cartesian coordinate system is introduced in FIGS. 1A and 1B, which includes an X-axis direction, a Y-axis direction, and a Z-axis direction that are perpendicular to each other. The touch panel 100 includes a conductive layer 110 , a cover lens 120 , and a substrate 102 . The conductive layer 110 is disposed on the substrate 102, and the protective layer 120 is disposed on the conductive layer 110. The conductive layer 110 has an anisotropic conductivity, that is, the conductive film 110 has different resistance in two different directions. For example, the conductive layer 110 has a low impedance direction D and a high impedance direction H as shown in FIG. 1A, wherein the low impedance direction D and the high impedance direction H may be vertical. In the present embodiment, the low impedance direction D of the conductive layer 110 is the Y-axis direction.

於本實施例中，基板102與/或保護層120可採用如：聚乙烯(Polyethylene,PE)、聚碳酸酯(Polycarbonate,PC)、聚對苯二甲酸二乙酯(polyethylene terephthalate,PET)、聚甲基丙烯酸甲酯(PolyMethyl MethAcrylate,PMMA)或薄化後的玻璃基板等透明材質。導電層110可以是平行排列的奈米碳管(carbon nano-tube,CNT)所形成之導電薄膜。此奈米碳管薄膜是由超順垂直排列奈米碳管陣列(Super Vertical-Aligned Carbon Nanotube Array)透過拉伸方式製成，可應用於製作透明的導電薄膜。例如，採用化學氣相沉積法(chemical vapor deposition,CVD)或其他適當的方法於矽基板、石英基板或其他適當的基板上形成奈米碳管層。接著，沿著一拉伸方向從奈米碳管層的一側邊拉出奈米碳管薄膜，也就是導電層110。之後，將導電層110配置於基板102上，同時將保護層120覆蓋於導電層110上即初步地完成電容式觸控面板100。因拉伸製程中，長鍊狀奈米碳管約略沿著拉伸方向平行排列，使得奈米碳管薄膜在拉伸方向具有較低阻抗，在垂直拉伸方向阻抗約為拉伸方向阻抗的50至350倍之間。奈米碳管薄膜的表面電阻也因量測的位置不同、方向不同而介於1KΩ至800KΩ之間，因此導電層110具有導電異向性。 In this embodiment, the substrate 102 and/or the protective layer 120 may be, for example, polyethylene (PE), polycarbonate (PC), polyethylene terephthalate (PET), A transparent material such as polymethyl methacrylate (PMMA) or a thinned glass substrate. The conductive layer 110 may be a conductive film formed by carbon nano-tubes (CNTs) arranged in parallel. This carbon nanotube film is made of super smooth The Super Vertical-Aligned Carbon Nanotube Array is formed by stretching and can be applied to produce a transparent conductive film. For example, a carbon nanotube layer is formed on a tantalum substrate, a quartz substrate, or other suitable substrate by chemical vapor deposition (CVD) or other suitable method. Next, the carbon nanotube film, that is, the conductive layer 110, is pulled out from one side of the carbon nanotube layer along a stretching direction. Thereafter, the conductive layer 110 is disposed on the substrate 102 while the protective layer 120 is overlaid on the conductive layer 110 to initially complete the capacitive touch panel 100. In the stretching process, the long-chain carbon nanotubes are arranged in parallel along the stretching direction, so that the carbon nanotube film has a lower impedance in the stretching direction, and the impedance in the vertical stretching direction is about the tensile direction impedance. Between 50 and 350 times. The surface resistance of the carbon nanotube film is also between 1 KΩ and 800 KΩ due to the different positions and directions of the measurement, and thus the conductive layer 110 has an anisotropic conductivity.

請參照圖1A，導電層110的低阻抗方向D為第一軸向，且導電層110沿第一軸向(例如Y軸方向)的二個對向側分別為第一側111與第二側112。第一電極S11、S12、S13、S14、S15、S16配置於導電層110的第一側111。第二電極S21、S22、S23、S24、S25、S26配置於導電層110的第二側112。雖然圖1A中之第一電極S11~S16及第二電極S21~S26僅分別以六個電極表示，但實際應用時，第一電極及第二電極的數目可根據實際觸控面板的面積以及設計需求而定。 Referring to FIG. 1A, the low-impedance direction D of the conductive layer 110 is a first axial direction, and the two opposite sides of the conductive layer 110 along the first axial direction (for example, the Y-axis direction) are the first side 111 and the second side, respectively. 112. The first electrodes S11, S12, S13, S14, S15, and S16 are disposed on the first side 111 of the conductive layer 110. The second electrodes S21, S22, S23, S24, S25, and S26 are disposed on the second side 112 of the conductive layer 110. Although the first electrodes S11 S S16 and the second electrodes S21 S S26 in FIG. 1A are only represented by six electrodes respectively, in actual application, the number of the first electrodes and the second electrodes may be based on the area and design of the actual touch panel. Depending on the needs.

為了簡化說明，以下實施例以觸控面板100在操作時，僅以一個觸碰點TP為例。在實際操作時，本實施例所述定位方法亦可適用於多觸碰點的情形。 In order to simplify the description, the following embodiment takes only one touch point TP as an example when the touch panel 100 is in operation. In actual operation, the positioning method described in this embodiment can also be applied to the case of multiple touch points.

請參照圖1A，驅動裝置150包含選擇器151、感測電路152與微控制器153。選擇器151連接至導電層110的電極 S11~S16與S21~S26。選擇器151依據前述順序逐一選擇一個電極，以及提供參考電壓(例如接地電壓或是其他固定準位的參考電壓)至其他未被選擇的電極。感測電路152連接於選擇器151與微控制器153之間。當電極S11~S16與S21~S26的其中一個電極被選擇時，感測電路152透過選擇器151驅動與感測被選擇電極。因此，感測電路152可以透過選擇器151驅動與感測第一電極S11~S16及第二電極S21~S26而獲得複數感測值。 Referring to FIG. 1A, the driving device 150 includes a selector 151, a sensing circuit 152, and a microcontroller 153. The selector 151 is connected to the electrode of the conductive layer 110 S11~S16 and S21~S26. The selector 151 selects one electrode one by one according to the foregoing sequence, and provides a reference voltage (for example, a ground voltage or a reference voltage of other fixed levels) to other unselected electrodes. The sensing circuit 152 is connected between the selector 151 and the microcontroller 153. When one of the electrodes S11 to S16 and S21 to S26 is selected, the sensing circuit 152 drives and senses the selected electrode through the selector 151. Therefore, the sensing circuit 152 can drive and sense the first electrodes S11 S S16 and the second electrodes S21 S S26 through the selector 151 to obtain a complex sensed value.

圖2是依照本發明實施例說明觸控面板的定位方法。於步驟S210中，感測電路152透過選擇器151感測第一電極S11~S16與第二電極S21~S26而獲得複數感測值，以及將這些感測值傳送至微控制器153。觸控面板100的感測方法(驅動方法)例如是逐一地選擇第一電極S11~S16以及第二電極S21~S26進行掃描與感測。本實施例將沿X軸方向掃描並驅動第一電極S11~S16與第二電極S21~S26。例如，前述掃描、驅動與感測電極的順序可以是S11、S12、S13、S14、S15、S16、S26、S25、S24、S23、S22、S21，或是以S11、S12、S13、S14、S15、S16、S21、S22、S23、S24、S25、S26順序驅動之，或是以其他順序(例如隨機順序)進行掃描、驅動與感測，但不以此為限。前述掃描、驅動與感測的操作例如先對所選擇的電極施加驅動電壓(例如電源電壓VDD)而對導電層110充電，然後感測所選擇電極的物理特徵值(即感測值，例如電壓值、電荷量或電容值等)。在某個電極進行掃描與感測時，其他電極皆被施加一參考電壓(例如接地電壓)。 FIG. 2 illustrates a method of positioning a touch panel according to an embodiment of the invention. In step S210, the sensing circuit 152 senses the first electrodes S11 S S16 and the second electrodes S21 S S26 through the selector 151 to obtain complex sensed values, and transmits the sensed values to the microcontroller 153. The sensing method (driving method) of the touch panel 100 is, for example, selecting the first electrodes S11 to S16 and the second electrodes S21 to S26 one by one for scanning and sensing. In this embodiment, the first electrodes S11 to S16 and the second electrodes S21 to S26 are scanned and driven in the X-axis direction. For example, the order of scanning, driving and sensing electrodes may be S11, S12, S13, S14, S15, S16, S26, S25, S24, S23, S22, S21, or S11, S12, S13, S14, S15. S16, S21, S22, S23, S24, S25, S26 are sequentially driven, or scanned, driven and sensed in other orders (for example, random order), but not limited thereto. The foregoing scanning, driving, and sensing operations, for example, first apply a driving voltage (eg, a power supply voltage VDD) to the selected electrode to charge the conductive layer 110, and then sense a physical characteristic value of the selected electrode (ie, a sensing value, such as a voltage). Value, charge or capacitance value, etc.). When an electrode is scanned and sensed, the other electrodes are applied with a reference voltage (such as a ground voltage).

在另一實施例中，在某個選定電極進行掃描、驅動與感測時，除了與此選定電極相對位置的電極為浮接外，其他電極皆被施加參考電壓(例如接地電壓)。例如，當第一電極S13進行掃描與感測時，除了與此第一電極S13相對位置的第二電極S23為浮接外，其他電極S11~S12、S14~S16、S21~S22、S24~S26皆被施加接地電壓。又例如，當第二電極S25進行掃描與感測時，除了與此第二電極S25相對位置的第一電極S15為浮接外，其他電極S11~S14、S16、S21~S24、S26皆被施加接地電壓。 In another embodiment, when scanning, driving, and sensing a certain selected electrode, the electrodes are floated except for the electrode at a position opposite to the selected electrode. A reference voltage (eg, a ground voltage) is applied. For example, when the first electrode S13 performs scanning and sensing, the other electrodes S11~S12, S14~S16, S21~S22, S24~S26 are floated except for the second electrode S23 at a position opposite to the first electrode S13. A ground voltage is applied. For example, when the second electrode S25 performs scanning and sensing, the other electrodes S11~S14, S16, S21~S24, and S26 are applied except that the first electrode S15 at a position opposite to the second electrode S25 is floating. Ground voltage.

當手指或是物體觸碰觸控面板100或是接近導電層110時(即圖1A所示觸碰點TP)，感測電路152會進行步驟S210，以透過選擇器151對第一電極S11~S16及第二電極S21~S26進行驅動與感測，並且將所獲得的複數感測值傳送給微控制器153。在後續步驟中，微控制器153利用第一電極S11~S16的感測值與第二電極S21~S26的感測值可以求出X軸與Y軸的位置。 When the finger or the object touches the touch panel 100 or approaches the conductive layer 110 (ie, the touch point TP shown in FIG. 1A), the sensing circuit 152 performs step S210 to pass the selector 151 to the first electrode S11~. S16 and the second electrodes S21 to S26 perform driving and sensing, and transmit the obtained complex sensed values to the microcontroller 153. In the subsequent step, the microcontroller 153 can determine the positions of the X-axis and the Y-axis using the sensed values of the first electrodes S11 to S16 and the sensed values of the second electrodes S21 to S26.

在完成步驟S210後，微控制器153會獲知第一電極S11~S16與/或第二電極S21~S26的相對極值位置。於本實施例中，當微控制器153發現於低阻抗方向D上的電極對(例如第一電極S13與第二電極S23)出現相對極值，微控制器153便可以進行步驟S220。於步驟S220中，微控制器153使用第一電極S11~S16的感測值與/或第二電極S21~S26的感測值，而計算該觸碰點TP於觸控面板100上第二軸向(例如X軸方向)的位置。 After completing step S210, the microcontroller 153 knows the relative extreme positions of the first electrodes S11 S S16 and/or the second electrodes S21 S S26. In the present embodiment, when the electrode pair 153 found in the low impedance direction D (for example, the first electrode S13 and the second electrode S23) has a relative extreme value, the microcontroller 153 can proceed to step S220. In step S220, the microcontroller 153 calculates the touch point TP on the second axis of the touch panel 100 by using the sensed values of the first electrodes S11-S16 and/or the sensed values of the second electrodes S21-S26. The position to (for example, the X-axis direction).

圖3A是依照本發明實施例說明圖1A中第二電極S21~S26的感測值示意圖。橫軸表示第二電極S21~S26的位置，縱軸表示感測值。由於觸碰點TP較靠近第二電極S23，因此圖3A於S23處出現相對極值(relative extreme)，例如第二電極S23的感測值大於鄰近第二電極的感測值。相類似地，圖3B是依照本發明實施例說明圖1A中第一電極S11~S16的感測值示意圖。橫軸表示第一電極S11~S16的位置，縱軸表示感測值。圖3B於S13處亦出現相對極值。由於觸碰點TP與第一電極S11~S16的距離大於觸碰點TP與第二電極S21~S26的距離，因此第一電極S11~S16的感測值整體上小於第二電極S21~S26。在一些實施例中，步驟S220可以依據第一電極S11~S16的感測值中出現相對極值的位置(在此為第一電極S13的位置)，而計算該觸碰點TP於觸控面板100上X軸方向的位置。或者，步驟S220亦可以依據第二電極S21~S26的感測值中出現相對極值的位置(在此為第二電極S23的位置)，而計算該觸碰點TP於觸控面板100上X軸方向的位置。 FIG. 3A is a schematic diagram showing sensing values of the second electrodes S21 S S26 of FIG. 1A according to an embodiment of the invention. The horizontal axis represents the position of the second electrodes S21 to S26, and the vertical axis represents the sensed value. Since the touch point TP is closer to the second electrode S23, FIG. 3A exhibits a relative extreme at S23, for example, a second The sensed value of the electrode S23 is greater than the sensed value adjacent to the second electrode. Similarly, FIG. 3B is a schematic diagram showing sensing values of the first electrodes S11 S S16 of FIG. 1A according to an embodiment of the invention. The horizontal axis represents the position of the first electrodes S11 to S16, and the vertical axis represents the sensed value. Figure 3B also shows relative extrema at S13. Since the distance between the touch point TP and the first electrodes S11 to S16 is greater than the distance between the touch point TP and the second electrodes S21 to S26, the sensing values of the first electrodes S11 to S16 are smaller than the second electrodes S21 to S26 as a whole. In some embodiments, step S220 may calculate the touch point TP on the touch panel according to the position where the relative extreme value appears in the sensing values of the first electrodes S11-S16 (here, the position of the first electrode S13). The position of the 100 on the X-axis direction. Alternatively, the step S220 can also calculate the touch point TP on the touch panel 100 according to the position where the relative extreme value appears in the sensing values of the second electrodes S21 S S26 (here, the position of the second electrode S23). The position in the direction of the axis.

於本實施例中，步驟S220將第一電極S11~S16的感測值各自與第二電極中S21~S26對應電極的感測值相加，而獲得第二軸向感測值S1、S2、S3、S4、S5、S6。例如，S1=S11+S21，S2=S12+S22，以此類推。圖3C是依照本發明實施例說明圖1A中第一電極S11~S16的感測值各自與第二電極中S21~S26對應電極的感測值相加示意圖。橫軸表示電極的位置(例如X軸的位置)，縱軸表示感測值。然後，步驟S220以第二軸向感測值S1~S6中相對極值的位置(在此為第二軸向感測值S3的位置)作為觸碰點TP於觸控面板100上第二軸向(例如X軸方向)的位置。 In this embodiment, step S220 adds the sensed values of the first electrodes S11 to S16 to the sensed values of the corresponding electrodes of the second electrodes S21 to S26, and obtains the second axial sensed values S1 and S2. S3, S4, S5, S6. For example, S1 = S11 + S21, S2 = S12 + S22, and so on. FIG. 3C is a schematic diagram showing the sensing values of the first electrodes S11 S S16 of FIG. 1A and the sensing values of the corresponding electrodes of S21 S S26 in the second electrode according to an embodiment of the invention. The horizontal axis represents the position of the electrode (for example, the position of the X axis), and the vertical axis represents the sensed value. Then, in step S220, the position of the relative extreme value in the second axial sensing values S1 S S6 (here, the position of the second axial sensing value S3) is used as the touch point TP on the second axis of the touch panel 100. The position to (for example, the X-axis direction).

應用本實施例者亦可以依據設計需求，採用內插法或其他演算法計算出更精確的第二軸向位置。圖3D是依照本發明實施例說明步驟S220進行內插法求得第二軸向位置之示意圖。橫軸表示X軸方向位置，縱軸表示感測值。圖3D僅繪出第二軸向感測值S2、S3、S4，而省略其他感測值。依據第二軸向感測值S1~S6中的相對極值(在此為S3)以及與該相對極值相鄰的二個第二軸向感測值(在此為S2、S4)，步驟S220使用內插法計算觸碰點TP於觸控面板100上第二軸向的位置。假設感測值S3與感測值S2的差值為△1，感測值S3與感測值S4的差值為△2，而相鄰兩電極(例如電極S13與S14)距離的一半為p。若△1>△2，則觸碰點TP距相對極值位置(例如感測值S3位置)的偏移量(offset)△S=[p(△1-△2)]÷△1。若△1<△2，則觸碰點TP距相對極值位置(即感測值S3位置)的偏移量(offset)△S=[-p(△2-△1)]÷△2。所以，觸碰點TP的第二軸向位置為相對極值位置加上偏移量△S，例如感測值S3位置加上偏移量△S。 The embodiment of the present application can also calculate a more accurate second axial position by interpolation or other algorithms according to design requirements. FIG. 3D is a schematic diagram showing the second axial position obtained by performing interpolation in step S220 according to an embodiment of the invention. The horizontal axis represents the position in the X-axis direction, and the vertical axis represents the sensed value. Figure 3D only depicts the second The axial sense values S2, S3, S4 are omitted, and other sensed values are omitted. According to the relative extreme values of the second axial sensed values S1 S S6 (here, S3) and the two second axial sensed values (here, S2, S4) adjacent to the relative extreme values, the steps S220 calculates the position of the touch point TP in the second axial direction on the touch panel 100 using interpolation. It is assumed that the difference between the sensed value S3 and the sensed value S2 is Δ1, the difference between the sensed value S3 and the sensed value S4 is Δ2, and the distance between the adjacent two electrodes (for example, the electrodes S13 and S14) is p. . If Δ1>Δ2, the offset ΔS=[p(Δ1-Δ2)]÷Δ1 of the touch point TP from the relative extreme position (for example, the sensed value S3 position). If Δ1 < Δ2, the offset ΔS = [-p (Δ2 - Δ1)] ÷ Δ2 of the touch point TP from the relative extreme position (i.e., the sensed value S3 position). Therefore, the second axial position of the touch point TP is the relative extreme position plus the offset ΔS, for example, the sensed value S3 position plus the offset ΔS.

請參照圖1A與圖2，在完成步驟S210與S220後，微控制器153會獲知第一電極S11~S16與/或第二電極S21~S26的相對極值位置。於本實施例中，當微控制器153發現於低阻抗方向D上的電極對(例如第一電極S13與第二電極S23)同時出現相對極值，微控制器153便可以進行步驟S230與S240。於其他實施例中，於低阻抗方向D上的電極對中，只要其中一個電極出現相對極值，微控制器153便可以進行步驟S230與S240。 Referring to FIG. 1A and FIG. 2, after completing steps S210 and S220, the microcontroller 153 knows the relative extreme positions of the first electrodes S11 S S16 and/or the second electrodes S21 S S26. In this embodiment, when the pair of electrodes found by the microcontroller 153 in the low impedance direction D (for example, the first electrode S13 and the second electrode S23) simultaneously exhibit relative extremum, the microcontroller 153 can perform steps S230 and S240. . In other embodiments, in the pair of electrodes in the low impedance direction D, the microcontroller 153 can perform steps S230 and S240 as long as one of the electrodes exhibits a relative extreme value.

於步驟S230中，微控制器153會在第一電極S11~S16的感測值中定義一個第一相對極值部，且在第二電極S21~S26的感測值中定義一個第二相對極值部。其中，第一相對極值部至少具有第一電極S11~S16的感測值中的第一相對極值(例如圖3B所示第一電極S13的感測值)，而第二相對極值部至少具有第二電極S21~S26的感測值中的第二相對極值(例如圖3A 所示第二電極S23的感測值)。第一相對極值部與第二相對極值部所含電極數量，可以依照設計需求而任意決定。在此先以單一電極定義第一相對極值部與第二相對極值部作為範例。在稍後所述的其他實施範例中，會以二個電極(或更複數電極)定義第一相對極值部與第二相對極值部。 In step S230, the microcontroller 153 defines a first relative extremum portion in the sensed values of the first electrodes S11-S16, and defines a second relative pole in the sensed values of the second electrodes S21-S26. Value department. The first relative extreme portion has at least a first relative extreme value of the sensing values of the first electrodes S11 to S16 (for example, a sensing value of the first electrode S13 shown in FIG. 3B), and the second relative extreme portion. Having at least a second relative extreme value of the sensed values of the second electrodes S21 S S26 (eg, FIG. 3A) The sensed value of the second electrode S23 is shown). The number of electrodes included in the first relative extreme portion and the second relative extreme portion can be arbitrarily determined according to design requirements. Here, the first relative extreme portion and the second relative extreme portion are defined by a single electrode as an example. In other embodiments to be described later, the first relative extremum portion and the second relative extremum portion may be defined by two electrodes (or more complex electrodes).

於本實施例中，微控制器153發現第一電極S13與第二電極S23同時出現相對極值，因此於步驟S230中微控制器153將第一電極S13的感測值定義為第一相對極值部，而將第二電極S23的感測值定義為第二相對極值部。接下來，於步驟S230中微控制器153計算該第一相對極值部與該第二相對極值部的感測值比值，也就是計算所述第二相對極值與所述第一相對極值的比值，做為感測值比值。例如，假設第一電極S13的感測值為A，第二電極S23的感測值為B，則步驟S230計算感測值比值r=B/A。 In this embodiment, the microcontroller 153 finds that the first electrode S13 and the second electrode S23 simultaneously exhibit relative extreme values, so the microcontroller 153 defines the sensed value of the first electrode S13 as the first relative pole in step S230. The value portion defines the sensed value of the second electrode S23 as the second relative extreme value portion. Next, in step S230, the microcontroller 153 calculates a ratio of the sensed value of the first relative extreme value portion and the second relative extreme value portion, that is, calculates the second relative extreme value and the first relative pole The ratio of the values is taken as the ratio of the sensed values. For example, assuming that the sensed value of the first electrode S13 is A and the sensed value of the second electrode S23 is B, the step S230 calculates the sensed value ratio r=B/A.

於步驟S240，微控制器153用感測值比值r來計算觸碰點TP於觸控面板100上第一軸向(例如Y軸方向)的位置。例如，若第一相對極值部的感測值(在此為第一電極S13的感測值)小於該第二相對極值部的感測值(在此為第二電極S23的感測值)，則觸碰點TP於第一軸向位置y=L÷(2r)，其中L為第一電極S11~S16至第二電極S21~S26的距離，r為前述步驟S230所獲得的感測值比值。若第一相對極值部的感測值等於第二相對極值部的感測值，則y=L÷2。若第一相對極值部的感測值大於該第二相對極值部的感測值，則y=L-(L×r)÷2。若第一相對極值部的感測值遠小於第二相對極值部的感測值，則y=0。若第一相對極值部的感測值遠大於第二相對極值部的感測值，則y=L。 In step S240, the microcontroller 153 calculates the position of the touch point TP in the first axial direction (for example, the Y-axis direction) on the touch panel 100 by using the sensing value ratio r. For example, if the sensed value of the first relative extreme portion (here, the sensed value of the first electrode S13) is smaller than the sensed value of the second relative extreme portion (here, the sensed value of the second electrode S23) And the touch point TP is at the first axial position y=L÷(2r), where L is the distance from the first electrodes S11 to S16 to the second electrodes S21 to S26, and r is the sensing obtained in the foregoing step S230. Value ratio. If the sensed value of the first relative extreme portion is equal to the sensed value of the second relative extreme portion, then y=L÷2. If the sensed value of the first relative extreme portion is greater than the sensed value of the second relative extreme portion, then y=L−(L×r)÷2. If the sensed value of the first relative extreme portion is much smaller than the sensed value of the second relative extreme portion, then y=0. If the sensed value of the first relative extreme portion is much larger than the sensed value of the second relative extreme portion, then y=L.

圖4A說明觸碰點TP於觸控面板100上沿第二軸向移動的情形。假設觸碰點TP於觸控面板100下緣附近由左向右沿一直線移動，如圖4A所示。圖4B說明當觸碰點TP於觸控面板100上沿第二軸向移動時，各電極感測值的變化情形。橫軸表示時間，縱軸表示感測值。圖4B僅繪出第一電極S12、S13、S14的感測值與第二電極S22、S23、S24的感測值作為代表，而省略其他感測值。請參照圖4A與圖4B，隨著觸碰點TP沿一直線移動的過程中，電極S12、S13、S14、S22、S23、S24的感測值以及感測值比值r之變化情形如圖4B所示。因此，進行圖2所示定位方法所計算出來的觸碰點TP移動路徑會像圖4A所示路徑410一般。為了改善圖4A所示現象，以下實施例會以二個電極或更複數電極定義第一相對極值部與第二相對極值部。 FIG. 4A illustrates a case where the touch point TP moves in the second axial direction on the touch panel 100. It is assumed that the touch point TP moves from left to right in a straight line near the lower edge of the touch panel 100, as shown in FIG. 4A. FIG. 4B illustrates a change in the sensed value of each electrode when the touch point TP moves in the second axial direction on the touch panel 100. The horizontal axis represents time and the vertical axis represents sensed values. 4B only depicts the sensed values of the first electrodes S12, S13, S14 and the sensed values of the second electrodes S22, S23, S24 as representatives, while omitting other sensed values. Referring to FIG. 4A and FIG. 4B, as the touch point TP moves along the straight line, the sensed values of the electrodes S12, S13, S14, S22, S23, and S24 and the ratio of the sensed values r are as shown in FIG. 4B. Show. Therefore, the moving point of the touch point TP calculated by performing the positioning method shown in FIG. 2 is similar to the path 410 shown in FIG. 4A. In order to improve the phenomenon shown in Fig. 4A, the following embodiment defines a first relative extremum portion and a second relative extremum portion with two or more electrodes.

於本實施例中會以相鄰二個電極定義第一相對極值部與第二相對極值部。在每次完成步驟S210後，會獲知第一電極S11~S16與/或第二電極S21~S26的相對極值位置，進而初步判斷出觸碰點TP的第二軸向位置。於本實施例中，當觸碰點TP的第二軸向位置落於第一電極S11~S16中某二個相鄰電極之間，則步驟S230會將此二個相鄰電極的感測值定義為第一相對極值部。計算該第一相對極值部中複數感測值的總和，而獲得第一總和值。相類似地，當觸碰點TP的第二軸向位置落於第二電極S21~S26中某二個相鄰電極之間，則步驟S230會將此二個相鄰電極的感測值定義為第二相對極值部。計算該第二相對極值部中複數感測值的總和，而獲得第二總和值。接下來，步驟S230計算所述第二總和值與所述第一總和值的比值，做為該感測值比值r。 In this embodiment, the first relative extreme portion and the second relative extreme portion are defined by two adjacent electrodes. After each step S210 is completed, the relative extreme positions of the first electrodes S11 S S16 and/or the second electrodes S21 S S26 are known, and the second axial position of the touch point TP is initially determined. In this embodiment, when the second axial position of the touch point TP falls between two adjacent electrodes of the first electrodes S11 to S16, the sensing value of the two adjacent electrodes is performed in step S230. Defined as the first relative extreme part. Calculating a sum of the plurality of sensed values in the first relative extreme value portion to obtain a first sum value. Similarly, when the second axial position of the touch point TP falls between two adjacent electrodes of the second electrodes S21 to S26, the sensing value of the two adjacent electrodes is defined as The second relative extreme portion. Calculating a sum of the plurality of sensed values in the second relative extreme value portion to obtain a second sum value. Next, step S230 calculates a ratio of the second sum value to the first sum value as the sensed value ratio r.

例如，假設步驟S210感測到觸碰點TP的第二軸向位置落於第一電極S12與S13之間，則步驟S230會將此二個相鄰電極S12與S13的感測值定義為第一相對極值部，然後計算第一相對極值部所有感測值的總和，而獲得第一總和值(S12+S13)。相類似地，假設觸碰點TP的第二軸向位置落於第二電極S22與S23之間，則步驟S230會將此二相鄰電極S22與S23的感測值定義為第二相對極值部，然後計算第二相對極值部所有感測值的總和，而獲得第二總和值(S22+S23)。接下來，步驟S230計算所述第二總和值與所述第一總和值的比值，例如計算r=(S22+S23)÷(S12+S13)。 For example, if it is determined that the second axial position of the touch point TP falls between the first electrodes S12 and S13, step S230 defines the sensed values of the two adjacent electrodes S12 and S13 as the first A relative extreme portion is then calculated by summing all the sensed values of the first relative extreme portion to obtain a first sum value (S12 + S13). Similarly, assuming that the second axial position of the touch point TP falls between the second electrodes S22 and S23, step S230 defines the sensed value of the two adjacent electrodes S22 and S23 as the second relative extreme value. Then, the sum of all the sensed values of the second relative extreme portion is calculated, and the second sum value is obtained (S22+S23). Next, step S230 calculates a ratio of the second sum value to the first sum value, for example, r = (S22 + S23) ÷ (S12 + S13).

在接下來的實施例中會以相鄰三個電極定義第一相對極值部與第二相對極值部。在每次完成步驟S210後，會獲知第一電極S11~S16與/或第二電極S21~S26的相對極值位置。於本實施例中，步驟S230會將第一電極S11~S16中出現相對極值的電極與相鄰二個電極的感測值定義為第一相對極值部，然後計算該第一相對極值部所有感測值的總和而獲得第一總和值。相類似地，步驟S230也會將第二電極S21~S26中出現相對極值的電極與相鄰二個電極的感測值定義為第二相對極值部，然後計算該第二相對極值部所有感測值的總和而獲得第二總和值。接下來，步驟S230計算所述第二總和值與所述第一總和值的比值，做為該感測值比值r。 In the following embodiments, the first relative extreme portion and the second relative extreme portion are defined by three adjacent electrodes. After each step S210 is completed, the relative extreme positions of the first electrodes S11 to S16 and/or the second electrodes S21 to S26 are known. In this embodiment, step S230 defines a sensing value of the electrode having the relative extreme value in the first electrodes S11 to S16 and the adjacent two electrodes as the first relative extreme value portion, and then calculating the first relative extreme value. The sum of all the sensed values is obtained to obtain the first sum value. Similarly, in step S230, the sensing value of the electrode having the opposite extreme value and the adjacent two electrodes in the second electrodes S21 to S26 is also defined as the second relative extreme value portion, and then the second relative extreme value portion is calculated. A second sum value is obtained by summing all the sensed values. Next, step S230 calculates a ratio of the second sum value to the first sum value as the sensed value ratio r.

例如，假設步驟S210感測到第一電極S11~S16中出現相對極值的電極是S13，而第二電極S21~S26中出現相對極值的電極是S23。因此，步驟S230會將此三個相鄰電極S12、S13與S14的感測值定義為第一相對極值部，然後計算第一相對極值部所有感測值的總和，而獲得第一總和值(S12+S13+S14)。相類似地，步驟S230會將此三個相鄰電極S22、S23與S24的感測值定義為第二相對極值部，然後計算第二相對極值部所有感測值的總和，而獲得第二總和值(S22+S23+S24)。接下來，步驟S230計算所述第二總和值與所述第一總和值的比值，例如計算r=(S22+S23+S24)÷(S12+S13+S14)。 For example, it is assumed that the step S210 senses that the electrode having the relative extreme value in the first electrodes S11 to S16 is S13, and the electrode having the relative extreme value in the second electrodes S21 to S26 is S23. Therefore, in step S230, the sensed values of the three adjacent electrodes S12, S13 and S14 are defined as the first relative extreme value portion, and then the sum of all the sensed values of the first relative extreme portion is calculated to obtain the first sum. Value (S12+S13+S14). Similarly, step S230 defines the sensed values of the three adjacent electrodes S22, S23, and S24 as the second relative extreme portion, and then calculates the sum of all the sensed values of the second relative extreme portion, and obtains the first Two sum values (S22+S23+S24). Next, step S230 calculates a ratio of the second sum value to the first sum value, for example, r = (S22 + S23 + S24) ÷ (S12 + S13 + S14).

上述第一相對極值部與第二相對極值部所含電極數量，可以依照設計需求而任意決定。在其他實施例中，步驟S230可以計算該第一相對極值部中複數感測值的平均而獲得第一平均值，另外計算該第二相對極值部中複數感測值的平均而獲得第二平均值，然後計算所述第二平均值與所述第一平均值的比值，做為該感測值比值r。 The number of electrodes included in the first relative extremum portion and the second relative extremum portion can be arbitrarily determined according to design requirements. In other embodiments, step S230 may calculate an average of the plurality of sensed values in the first relative extreme value portion to obtain a first average value, and calculate an average of the plurality of sensed values in the second relative extreme value portion to obtain an The two average values are then calculated as the ratio of the second average value to the first average value as the sensed value ratio r.

綜上所述，上述諸實施例揭露了多種定位方法，均可以應用於不同類型的觸控面板，以及對觸碰點進行精確定位。例如，此定位方法亦可以應用於二層導電膜的電阻式觸控面板。此二層導電膜的其中一者可以是如圖1A所述的導電層110，而另一層導電膜可以是固定耦接至參考電壓的銦錫氧化物(Indium Tin Oxide,ITO膜。此二層導電膜疊覆於基板上。此二層導電膜之間均勻散佈複數絕緣間隔物(spacer)，使此二層導電膜維持一固定間距。 In summary, the above embodiments disclose various positioning methods, which can be applied to different types of touch panels, and precise positioning of touch points. For example, the positioning method can also be applied to a resistive touch panel of a two-layer conductive film. One of the two conductive films may be the conductive layer 110 as described in FIG. 1A, and the other conductive film may be an Indium Tin Oxide (ITO) fixedly coupled to a reference voltage. The conductive film is laminated on the substrate, and a plurality of insulating spacers are evenly distributed between the two conductive films to maintain the two conductive films at a fixed pitch.

雖然本發明已以實施例揭露如上，然其並非用以限定本發明，任何所屬技術領域中具有通常知識者，在不脫離本發明之精神和範圍內，當可作些許之更動與潤飾，故本發明之保護範圍當視後附之申請專利範圍所界定者為準。 Although the present invention has been disclosed in the above embodiments, it is not intended to limit the invention, and any one of ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims.

100‧‧‧觸控面板 100‧‧‧ touch panel

102‧‧‧基板 102‧‧‧Substrate

110‧‧‧導電層 110‧‧‧ Conductive layer

111‧‧‧導電層的第一側 111‧‧‧First side of the conductive layer

112‧‧‧導電層的第二側 112‧‧‧Second side of the conductive layer

150‧‧‧驅動裝置 150‧‧‧ drive

151‧‧‧選擇器 151‧‧‧Selector

152‧‧‧感測電路 152‧‧‧Sensor circuit

153‧‧‧微控制器 153‧‧‧Microcontroller

410‧‧‧計算出來的路徑 410‧‧‧calculated path

D‧‧‧低阻抗方向 D‧‧‧low impedance direction

H‧‧‧高阻抗方向 H‧‧‧High impedance direction

S₁~S₆‧‧‧第二軸向感測值 S ₁ ~S ₆ ‧‧‧second axial sensed value

S₁₁~S₁₆‧‧‧第一電極 S ₁₁ ~S ₁₆ ‧‧‧first electrode

S₂₁~S₂₆‧‧‧第二電極 S ₂₁ ~S ₂₆ ‧‧‧second electrode

S210~S240‧‧‧步驟 S210~S240‧‧‧Steps

TP‧‧‧觸碰點 TP‧‧‧ touch point

圖1A為依照本發明一實施例說明表面電容式觸控面板的示意圖。 FIG. 1A is a schematic diagram showing a surface capacitive touch panel according to an embodiment of the invention.

圖1B為圖1A之觸控面板沿剖線A-A’繪示的局部剖面示意圖。 1B is a partial cross-sectional view of the touch panel of FIG. 1A taken along line A-A'.

圖2是依照本發明實施例說明觸控面板的定位方法。 FIG. 2 illustrates a method of positioning a touch panel according to an embodiment of the invention.

圖3A是依照本發明實施例說明圖1A中第二電極S21~S26的感測值示意圖。 FIG. 3A is a schematic diagram showing sensing values of the second electrodes S21 S S26 of FIG. 1A according to an embodiment of the invention.

圖3B是依照本發明實施例說明圖1A中第一電極S11~S16的感測值示意圖。 FIG. 3B is a schematic diagram showing sensing values of the first electrodes S11 S S16 of FIG. 1A according to an embodiment of the invention.

圖3C是依照本發明實施例說明圖1A中第一電極S11~S16的感測值各自與第二電極中S21~S26對應電極的感測值相加示意圖。 FIG. 3C is a schematic diagram showing the sensing values of the first electrodes S11 S S16 of FIG. 1A and the sensing values of the corresponding electrodes of S21 S S26 in the second electrode according to an embodiment of the invention.

圖3D是依照本發明實施例說明進行內插法求得第二軸向位置之示意圖。 FIG. 3D is a schematic diagram showing the interpolation of the second axial position in accordance with an embodiment of the present invention. FIG.

圖4A說明觸碰點於觸控面板上沿第二軸向移動的情形。 FIG. 4A illustrates a situation in which a touch point moves in a second axial direction on the touch panel.

圖4B說明當觸碰點於觸控面板上沿第二軸向移動時，各電極感測值的變化情形。 FIG. 4B illustrates a change in the sensed value of each electrode when the touch point moves along the second axis in the touch panel.

S210~S240‧‧‧步驟 S210~S240‧‧‧Steps

Claims

一種觸控面板的定位方法，該觸控面板包含具有導電異向性的一導電層與複數電極對，其中該些電極對各自包含一第一電極與一第二電極，且該導電層沿一第一軸向的二個對向側分別為一第一側與一第二側，該些第一電極配置於該導電層的第一側，該些第二電極配置於該導電層的第二側，該定位方法包括：感測該些第一電極與該些第二電極而獲得複數感測值；於該些第一電極的感測值中定義一第一相對極值部，其中該第一相對極值部至少具有該些第一電極的感測值中的一第一相對極值；於該些第二電極的感測值中定義一第二相對極值部，其中該第二相對極值部至少具有該些第二電極的感測值中的一第二相對極值；計算該第一相對極值部與該第二相對極值部的一感測值比值；使用該感測值比值而計算一觸碰點於該觸控面板上該第一軸向的位置；將該些第一電極的感測值各自與該些第二電極中對應電極的感測值相加，而獲得複數第二軸向感測值；以及以該些第二軸向感測值中相對極值的位置做為該觸碰點於該觸控面板上一第二軸向的位置。 A method for locating a touch panel, the touch panel includes a conductive layer and a plurality of electrode pairs having conductive anisotropy, wherein the pair of electrodes respectively comprise a first electrode and a second electrode, and the conductive layer is along a The two opposite sides of the first axial direction are respectively a first side and a second side, the first electrodes are disposed on the first side of the conductive layer, and the second electrodes are disposed on the second side of the conductive layer On the side, the positioning method includes: sensing the first electrodes and the second electrodes to obtain a plurality of sensing values; and defining a first relative extreme portion in the sensing values of the first electrodes, wherein the a relative extreme portion having at least a first relative extreme value of the sensing values of the first electrodes; a second relative extreme portion defined in the sensing values of the second electrodes, wherein the second relative The extreme value portion has at least one second relative extreme value of the sensing values of the second electrodes; calculating a ratio of a sensed value of the first relative extreme value portion and the second relative extreme value portion; using the sensing Calculating a touch point on the first axial position of the touch panel by using a value ratio; The sensing values of the first electrodes are respectively added to the sensing values of the corresponding ones of the second electrodes to obtain a plurality of second axial sensing values; and the relative extreme values of the second axial sensing values The position is the touch point on a second axial position of the touch panel.

一種觸控面板的定位方法，該觸控面板包含具有導電異向性的一導電層與複數電極對，其中該些電極對各自包含一第一電極與一第二電極，且該導電層沿一第一軸向的二個對向側分別為一第一側與一第二側，該些第一電極配置於該導電層的第一側，該些第二電極配置於該導電層的第二側，該定位方法包括：感測該些第一電極與該些第二電極而獲得複數感測值；於該些第一電極的感測值中定義一第一相對極值部，其中該第一相對極值部至少具有該些第一電極的感測值中的一第一相對極值；於該些第二電極的感測值中定義一第二相對極值部，其中該第二相對極值部至少具有該些第二電極的感測值中的一第二相對極值；計算該第一相對極值部與該第二相對極值部的一感測值比值；使用該感測值比值而計算一觸碰點於該觸控面板上該第一軸向的位置；將該些第一電極的感測值各自與該些第二電極中對應電極的感測值相加，而獲得複數第二軸向感測值；以及依據該些第二軸向感測值中一相對極值與相鄰二個第二軸向感測值，使用內插法計算該觸碰點於該觸控面板上一第二軸向的位置，其中該第一軸向與該第二軸向互相垂直。 A method for locating a touch panel, the touch panel includes a conductive layer and a plurality of electrode pairs having conductive anisotropy, wherein the pair of electrodes respectively comprise a first electrode and a second electrode, and the conductive layer is along a The two opposite sides of the first axial direction are respectively a first side and a second side, and the first electrodes are disposed on the conductive layer. On the first side, the second electrodes are disposed on the second side of the conductive layer, and the positioning method includes: sensing the first electrodes and the second electrodes to obtain a plurality of sensing values; and the first electrodes Determining a first relative extremum portion, wherein the first relative extremum portion has at least a first relative extremum of the sensed values of the first electrodes; and a sense of the second electrodes Determining a second relative extremum portion, wherein the second relative extremum portion has at least one second relative extremum of the sensing values of the second electrodes; calculating the first relative extremum portion and the a ratio of the sensed value of the second relative extreme portion; calculating a touch point on the first axial position of the touch panel using the sensed value ratio; sensing values of the first electrodes Adding a sensed value of the corresponding electrode of the second electrodes to obtain a plurality of second axial sensed values; and determining a relative extreme value and two adjacent second ones according to the second axial sensed values The axial sensing value is calculated by interpolation to calculate a position of the touch point on a second axial direction of the touch panel, wherein the An axial with the second axis perpendicular to each other.

如申請專利範圍第1或2項所述觸控面板的定位方法，其中所述計算該感測值比值的步驟包括：計算所述第二相對極值與所述第一相對極值的比值，做為該感測值比值。 The method for locating a touch panel according to claim 1 or 2, wherein the calculating the ratio of the sensed value comprises: calculating a ratio of the second relative extremum to the first relative extremum, As the ratio of the sensed values.

如申請專利範圍第1或2項所述觸控面板的定位方法，其中所述計算該感測值比值的步驟包括：計算該第一相對極值部中複數感測值的總和，而獲得一第一總和值；計算該第二相對極值部中複數感測值的總和，而獲得一第二總和值；以及計算所述第二總和值與所述第一總和值的比值，做為該感測值比值。 The method for locating a touch panel according to claim 1 or 2, wherein the calculating the ratio of the sensed values comprises: calculating a sum of the plurality of sensed values in the first relative extreme value portion to obtain a First sum value; Calculating a sum of the plurality of sensed values in the second relative extreme value portion to obtain a second sum value; and calculating a ratio of the second sum value to the first sum value as the ratio of the sensed values.

如申請專利範圍第1或2項所述觸控面板的定位方法，其中所述計算該感測值比值的步驟包括：計算該第一相對極值部中複數感測值的平均，而獲得一第一平均值；計算該第二相對極值部中複數感測值的平均，而獲得一第二平均值；以及計算所述第二平均值與所述第一平均值的比值，做為該感測值比值。 The method for locating a touch panel according to claim 1 or 2, wherein the calculating the ratio of the sensed values comprises: calculating an average of the plurality of sensed values in the first relative extreme value portion to obtain a a first average value; calculating an average of the plurality of sensed values in the second relative extreme value portion to obtain a second average value; and calculating a ratio of the second average value to the first average value as the The sensed value ratio.

如申請專利範圍第1或2項所述觸控面板的定位方法，其中所述計算該觸碰點於該第一軸向位置的步驟包括：若該第一相對極值部的感測值小於該第二相對極值部的感測值，則該觸碰點於該第一軸向位置y=L÷(2r)，其中L為該些第一電極至該些第二電極的距離，r為所述感測值比值；若該第一相對極值部的感測值等於該第二相對極值部的感測值，則y=L÷2；以及若該第一相對極值部的感測值大於該第二相對極值部的感測值，則y=L-(L×r)÷2。 The method for positioning a touch panel according to claim 1 or 2, wherein the calculating the touch point at the first axial position comprises: if the sensed value of the first relative extreme portion is smaller than a sensing value of the second relative extreme portion, the touch point is at the first axial position y=L÷(2r), where L is a distance between the first electrodes and the second electrodes, r a ratio of the sensed value; if the sensed value of the first relative extreme value portion is equal to the sensed value of the second relative extreme value portion, then y=L÷2; and if the first relative extreme value portion The sensed value is greater than the sensed value of the second relative extreme portion, then y=L−(L×r)÷2.

如申請專利範圍第6項所述觸控面板的定位方法，其中所述計算該觸碰點於該第一軸向位置的步驟更包括：若該第一相對極值部的感測值遠小於該第二相對極值部的感測值，則y=0；以及若該第一相對極值部的感測值遠大於該第二相對極值部的感測值，則y=L。 The method for positioning a touch panel according to claim 6, wherein the step of calculating the touch point in the first axial position further comprises: if the sensed value of the first relative extreme portion is much smaller The sensed value of the second relative extreme portion is y=0; and if the sensed value of the first relative extreme portion is much larger than the second relative extreme portion The sensed value is y=L.

如申請專利範圍第1或2項所述觸控面板的定位方法，其中該導電層的低阻抗方向為該第一軸向。 The method for positioning a touch panel according to claim 1 or 2, wherein the low impedance direction of the conductive layer is the first axial direction.

如申請專利範圍第1或2項所述觸控面板的定位方法，其中該導電層為平行排列的奈米碳管所形成之導電薄膜。 The method for positioning a touch panel according to claim 1 or 2, wherein the conductive layer is a conductive film formed by parallel arranged carbon nanotubes.

一種觸控面板的驅動裝置，該觸控面板包含具有導電異向性的一導電層，其中該導電層沿一第一軸向的二個對向側分別為一第一側與一第二側，該驅動裝置包括：複數電極對，其中該些電極對各自包含一第一電極與一第二電極，該些第一電極配置於該導電層的該第一側，該些第二電極對配置於該導電層的該第二側；一選擇器，連接至該導電層的該些第一電極與該些第二電極；一感測電路，連接至該選擇器，其中該感測電路透過該選擇器驅動與感測該些第一電極與該些第二電極而獲得複數感測值；以及一微控制器，連接至該感測電路以接收該些感測值，其中於該些第一電極的感測值中定義一第一相對極值部，且該第一相對極值部至少具有該些第一電極的感測值中的一第一相對極值；於該些第二電極的感測值中定義一第二相對極值部，且該第二相對極值部至少具有該些第二電極的感測值中的一第二相對極值；該微控制器計算該第一相對極值部與該第二相對極值部的一感測值比值；以及該微控制器使用該感測值比值而計算一觸碰點於該觸控面板上該第一軸向的位置；其中該微控制器將該些第一電極的感測值各自與該些第二電極中對應電極的感測值相加，而獲得複數第二軸向感測值；以及該微控制器以該些第二軸向感測值中相對極值的位置做為該觸碰點於該觸控面板上一第二軸向的位置。 A driving device for a touch panel, the touch panel comprising a conductive layer having conductive anisotropy, wherein the two opposite sides of the conductive layer along a first axis are a first side and a second side The driving device includes: a plurality of electrode pairs, wherein the pair of electrodes respectively comprise a first electrode and a second electrode, the first electrodes are disposed on the first side of the conductive layer, and the second electrode pairs are disposed On the second side of the conductive layer; a selector connected to the first electrodes of the conductive layer and the second electrodes; a sensing circuit connected to the selector, wherein the sensing circuit transmits the The selector drives and senses the first electrodes and the second electrodes to obtain a complex sensed value; and a microcontroller is coupled to the sensing circuit to receive the sensed values, wherein the first a first relative extreme value portion is defined in the sensing value of the electrode, and the first relative extreme value portion has at least a first relative extreme value of the sensing values of the first electrodes; and the second electrode Determining a second relative extremum portion in the sensed value, and the second relative pole The portion has at least one second relative extreme value of the sensing values of the second electrodes; the microcontroller calculates a sensed value ratio of the first relative extreme portion and the second relative extreme portion; The microcontroller uses the sensed value ratio to calculate a touch point on the first axial position of the touch panel; wherein the microcontroller senses the sensed values of the first electrodes and the second The sensed values of the corresponding electrodes in the electrodes are added to obtain a plurality of second axial senses And a position of the relative position of the second axial sensing values of the microcontroller as a position of the touch point on a second axial direction of the touch panel.

一種觸控面板的驅動裝置，該觸控面板包含具有導電異向性的一導電層，其中該導電層沿一第一軸向的二個對向側分別為一第一側與一第二側，該驅動裝置包括：複數電極對，其中該些電極對各自包含一第一電極與一第二電極，該些第一電極配置於該導電層的該第一側，該些第二電極對配置於該導電層的該第二側；一選擇器，連接至該導電層的該些第一電極與該些第二電極；一感測電路，連接至該選擇器，其中該感測電路透過該選擇器驅動與感測該些第一電極與該些第二電極而獲得複數感測值；以及一微控制器，連接至該感測電路以接收該些感測值，其中於該些第一電極的感測值中定義一第一相對極值部，且該第一相對極值部至少具有該些第一電極的感測值中的一第一相對極值；於該些第二電極的感測值中定義一第二相對極值部，且該第二相對極值部至少具有該些第二電極的感測值中的一第二相對極值；該微控制器計算該第一相對極值部與該第二相對極值部的一感測值比值；以及該微控制器使用該感測值比值而計算一觸碰點於該觸控面板上該第一軸向的位置；其中該微控制器將該些第一電極的感測值各自與該些第二電極中對應電極的感測值相加，而獲得複數第二軸向感測值；以及該微控制器依據該些第二軸向感測值中一相對極值與相鄰二個第二軸向感測值，使用內插法計算該觸碰點於該觸控面板上一第二軸向的位置，其中該第一軸向與該第二軸向互相垂直。 A driving device for a touch panel, the touch panel comprising a conductive layer having conductive anisotropy, wherein the two opposite sides of the conductive layer along a first axis are a first side and a second side The driving device includes: a plurality of electrode pairs, wherein the pair of electrodes respectively comprise a first electrode and a second electrode, the first electrodes are disposed on the first side of the conductive layer, and the second electrode pairs are disposed On the second side of the conductive layer; a selector connected to the first electrodes of the conductive layer and the second electrodes; a sensing circuit connected to the selector, wherein the sensing circuit transmits the The selector drives and senses the first electrodes and the second electrodes to obtain a complex sensed value; and a microcontroller is coupled to the sensing circuit to receive the sensed values, wherein the first a first relative extreme value portion is defined in the sensing value of the electrode, and the first relative extreme value portion has at least a first relative extreme value of the sensing values of the first electrodes; and the second electrode Determining a second relative extremum portion in the sensed value, and the second relative pole The portion has at least one second relative extreme value of the sensing values of the second electrodes; the microcontroller calculates a sensed value ratio of the first relative extreme portion and the second relative extreme portion; The microcontroller uses the sensed value ratio to calculate a touch point on the first axial position of the touch panel; wherein the microcontroller senses the sensed values of the first electrodes and the second Sensing values of the corresponding electrodes in the electrodes are added to obtain a plurality of second axial sensing values; and the microcontroller is based on a relative extreme value of the second axial sensing values and two adjacent second axes Calculating, by using an interpolation method, a position of the touch point on a second axial direction of the touch panel, wherein the first axial direction and the second axial direction are mutually vertical.

如申請專利範圍第10或11項所述觸控面板的驅動裝置，其中該微控制器計算所述第二相對極值與所述第一相對極值的比值，做為該感測值比值。 The driving device of the touch panel of claim 10 or 11, wherein the microcontroller calculates a ratio of the second relative extremum to the first relative extremum as the ratio of the sensed values.

如申請專利範圍第10或11項所述觸控面板的驅動裝置，其中該微控制器計算該第一相對極值部中複數感測值的總和而獲得一第一總和值，計算該第二相對極值部中複數感測值的總和而獲得一第二總和值，以及計算所述第二總和值與所述第一總和值的比值，做為該感測值比值。 The driving device of the touch panel of claim 10 or 11, wherein the microcontroller calculates a sum of the plurality of sensing values in the first relative extreme portion to obtain a first sum value, and calculates the second A second sum value is obtained from the sum of the plurality of sensed values in the extreme value portion, and a ratio of the second sum value to the first sum value is calculated as the ratio of the sensed values.

如申請專利範圍第10或11項所述觸控面板的驅動裝置，其中該微控制器計算該第一相對極值部中複數感測值的平均而獲得一第一平均值，計算該第二相對極值部中複數感測值的平均而獲得一第二平均值，以及計算所述第二平均值與所述第一平均值的比值，做為該感測值比值。 The driving device of the touch panel of claim 10, wherein the microcontroller calculates an average of the plurality of sensing values in the first relative extreme portion to obtain a first average value, and calculates the second A second average value is obtained from the average of the plurality of sensed values in the extreme value portion, and a ratio of the second average value to the first average value is calculated as the ratio of the sensed values.

如申請專利範圍第10或11項所述觸控面板的驅動裝置，其中若該第一相對極值部的感測值小於該第二相對極值部的感測值，則該觸碰點於該第一軸向位置y=L÷(2r)，L為該些第一電極至該些第二電極的距離，r為所述感測值比值；若該第一相對極值部的感測值等於該第二相對極值部的感測值，則y=L÷2；以及若該第一相對極值部的感測值大於該第二相對極值部的感測值，則y=L-(L×r)÷2。 The driving device of the touch panel according to Item 10 or 11, wherein if the sensing value of the first relative extreme portion is smaller than the sensing value of the second relative extreme portion, the touch point is The first axial position y=L÷(2r), L is the distance between the first electrodes and the second electrodes, and r is the ratio of the sensed values; if the first relative extreme portion is sensed The value is equal to the sensed value of the second relative extreme value portion, then y=L÷2; and if the sensed value of the first relative extreme value portion is greater than the sensed value of the second relative extreme value portion, then y= L-(L×r)÷2.

如申請專利範圍第15項所述觸控面板的驅動裝置，其中若該第一相對極值部的感測值遠小於該第二相對極值部的感測值，則y=0；以及若該第一相對極值部的感測值遠大於該第二相對極值部的感測值，則y=L。 The driving device of the touch panel according to claim 15, wherein if the sensed value of the first relative extreme portion is much smaller than the sensed value of the second relative extreme portion, y=0; The sensed value of the first relative extreme portion is much larger than the sensed value of the second relative extreme portion, and y=L.

如申請專利範圍第10或11項所述觸控面板的驅動裝置，其中該導電層的低阻抗方向為該第一軸向。 The driving device of the touch panel described in claim 10 or 11 The low impedance direction of the conductive layer is the first axial direction.

如申請專利範圍第10或11項所述觸控面板的驅動裝置，其中該導電層為平行排列的奈米碳管所形成之導電薄膜。 The driving device of the touch panel according to claim 10 or 11, wherein the conductive layer is a conductive film formed by parallel arranged carbon nanotubes.