TWI553537B - Sensing device - Google Patents
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- TWI553537B TWI553537B TW104134396A TW104134396A TWI553537B TW I553537 B TWI553537 B TW I553537B TW 104134396 A TW104134396 A TW 104134396A TW 104134396 A TW104134396 A TW 104134396A TW I553537 B TWI553537 B TW I553537B
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/96—Touch switches
- H03K17/962—Capacitive touch switches
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Description
本發明中所述實施例內容是有關於一種感應元件,且特別是有關於一種適用於感應觸控滑塊(slider)的感應元件。 The embodiment of the present invention relates to an inductive component, and more particularly to an inductive component suitable for sensing a touch slider.
觸碰感測控制介面較傳統的機械式按鍵介面使用更為直覺,能夠提升使用者經驗(user experience),由於投入大量研發資源,觸控式面板的製造成本近年來也不斷下滑,越來越多電子產品改採觸控式面版作為操作介面,觸碰感測裝置的需求也日益成長。 The touch sensing control interface is more intuitive than the traditional mechanical button interface, and can enhance the user experience. Due to the large amount of research and development resources, the manufacturing cost of the touch panel has been declining in recent years. Multi-electronic products have adopted a touch panel as an operation interface, and the demand for touch sensing devices has also grown.
在操作介面應用中,滑塊(slider)常用於需連續性調整數值的應用場景,若以觸控方式實現滑塊功能,需精確定位出使用者觸碰觸控感應元件的位置。傳統的觸控式滑塊通常使用多個觸控按鍵實作,輪流掃描各個觸控按鍵,並以內插方式計算出使用者的觸碰位置。然而,若欲達到較高的精準度,需要大幅增加觸控按鍵的數量,如此一來,會造成製造成本的提高。另外,此類觸控式滑塊於製造過程中需控制各個觸控按鍵的自容值大約相同,否則將大大降低控制精準度,而增加觸控按鍵數量則更提昇控制各個觸控按鍵自容 值(self capacitance)的難度,進一步增加製程成本。 In the operation interface application, a slider is often used in an application scenario in which a value is continuously adjusted. If the slider function is implemented in a touch manner, the position of the user touching the touch sensing element needs to be accurately positioned. A conventional touch slider is usually implemented by using a plurality of touch buttons, and each touch button is scanned in turn, and the user's touch position is calculated by interpolation. However, in order to achieve higher precision, it is necessary to greatly increase the number of touch buttons, which will result in an increase in manufacturing costs. In addition, in the manufacturing process, the touch sliders need to control the self-capacity values of the respective touch buttons to be about the same, otherwise the control precision will be greatly reduced, and the number of the touch buttons is increased to control the control of each touch button. The difficulty of self capacitance further increases the cost of the process.
為以低廉的製造成本生產出具備高精準度觸控式滑塊的感應元件,本揭示內容提供一種感應元件,感應元件包含比較器、第一開關、第二開關以及控制器。比較器包含第一比較器輸入端以及第二比較器輸入端。第一開關之一端與第一比較器輸入端耦接,另一端與彼此互補之第一觸控電極及第二觸控電極中之一者耦接;第二開關之一端與第二比較器輸入端耦接,另一端選擇性地與第二觸控電極耦接。控制器控制第一開關與第二開關。當第一觸控電極與第二觸控電極被碰觸時,控制器控制第一開關使第一比較器輸入端與第一觸控電極耦接,控制第二開關使第二比較器輸入端與第二觸控電極耦接,再計算出第一觸控電極與第二觸控電極之第一被碰觸位置。 In order to produce an inductive component with a highly accurate touch slider at a low manufacturing cost, the present disclosure provides an inductive component including a comparator, a first switch, a second switch, and a controller. The comparator includes a first comparator input and a second comparator input. One end of the first switch is coupled to the input end of the first comparator, and the other end is coupled to one of the first touch electrode and the second touch electrode that are complementary to each other; one end of the second switch and the second comparator input The end is coupled, and the other end is selectively coupled to the second touch electrode. The controller controls the first switch and the second switch. When the first touch electrode and the second touch electrode are touched, the controller controls the first switch to couple the first comparator input end with the first touch electrode, and controls the second switch to make the second comparator input end The second touch electrode is coupled to the second touch electrode, and the first touched position of the first touch electrode and the second touch electrode is calculated.
於一實施例中,感應元件更包含至少一可變電容器單元,可變電容器單元與第一比較器輸入端及第二比較器輸入端中至少一者和控制器電性耦接,用以自控制器接收至少一調整信號,根據調整信號調整可變電容器單元之等效電容,控制器用以根據可變電容器單元的等效電容計算第一被碰觸位置。 In one embodiment, the sensing component further includes at least one variable capacitor unit, and the variable capacitor unit is electrically coupled to the controller and at least one of the first comparator input and the second comparator input. The controller receives at least one adjustment signal, adjusts an equivalent capacitance of the variable capacitor unit according to the adjustment signal, and the controller is configured to calculate the first touched position according to the equivalent capacitance of the variable capacitor unit.
於一實施例中,可變電容器單元包含多個可切換式電容器,可切換式電容器間相互並聯耦接,可切換式電容器之一端用以選擇性地接收調整信號,可切換式電容器之另一端 共同耦接至第一比較器輸入端及第二比較器輸入端中至少一者。 In one embodiment, the variable capacitor unit includes a plurality of switchable capacitors, the switchable capacitors are coupled in parallel with each other, and one end of the switchable capacitor is configured to selectively receive the adjustment signal, and the other end of the switchable capacitor And being coupled to at least one of the first comparator input and the second comparator input.
於一實施例中,可變電容器單元亦自控制器接收驅動信號,用以藉由驅動信號對第一比較器輸入端及第二比較器輸入端中至少一者充電。 In one embodiment, the variable capacitor unit also receives a drive signal from the controller for charging at least one of the first comparator input and the second comparator input by the drive signal.
於一實施例中,第一觸控電極與第二觸控電極之寬度非均勻分布,控制器用以根據第一觸控電極與第二觸控電極之寬度資訊計算第一被碰觸位置。 In one embodiment, the widths of the first touch electrodes and the second touch electrodes are non-uniformly distributed, and the controller is configured to calculate the first touched position according to the width information of the first touch electrodes and the second touch electrodes.
於一實施例中,控制器控制第一開關使第一比較器輸入端交替地與第一觸控電極和第二觸控電極電性耦接,且控制第二開關斷開第二比較器輸入端與第二觸控電極,以判斷第一觸控電極與第二觸控電極之被碰觸狀態。 In one embodiment, the controller controls the first switch to electrically couple the first comparator input to the first touch electrode and the second touch electrode alternately, and control the second switch to open the second comparator input The second touch electrode and the second touch electrode determine the touched state of the first touch electrode and the second touch electrode.
於一實施例中,感應元件更包含第三開關,第三開關之一端與第二比較器輸入端耦接,第三開關之另一端選擇性地與第一觸控電極耦接,控制器用以控制第一開關使第一比較器輸入端與第二觸控電極耦接,控制第二開關斷開第二比較器輸入端與第二觸控電極,控制第三開關使第二比較器輸入端與第一觸控電極耦接,再計算出第一觸控電極與第二觸控電極之第二被碰觸位置,並利用第二被碰觸位置修正第一被碰觸位置。 In one embodiment, the sensing component further includes a third switch, one end of the third switch is coupled to the second comparator input end, and the other end of the third switch is selectively coupled to the first touch electrode, and the controller is configured to Controlling the first switch to couple the first comparator input end with the second touch electrode, controlling the second switch to open the second comparator input end and the second touch electrode, and controlling the third switch to make the second comparator input end The second touched electrode is coupled to the first touch electrode, and the second touched position of the first touch electrode and the second touch electrode is calculated, and the first touched position is corrected by using the second touched position.
本揭示內容之另一態樣為一種感應方法,包含下列步驟:藉由控制器控制第一開關,使比較器之第一比較器輸入端耦接至彼此互補之第一觸控電極及第二觸控電極中之一者,並控制第二開關,使比較器之第二比較器輸入端選擇 性地與第二觸控電極耦接;當第一觸控電極與第二觸控電極被碰觸時,藉由控制器控制第一開關使第一比較器輸入端與第一觸控電極耦接,並控制第二開關使第二比較器輸入端與第二觸控電極耦接,並計算出第一觸控電極與第二觸控電極之第一被碰觸位置。 Another aspect of the present disclosure is an inductive method, comprising the steps of: controlling, by a controller, a first switch, coupling a first comparator input of the comparator to a first touch electrode and a second complement each other; One of the touch electrodes, and controls the second switch to select the second comparator input of the comparator The second touch electrode is coupled to the second touch electrode. When the first touch electrode and the second touch electrode are touched, the first switch input is coupled to the first touch electrode by the controller controlling the first switch. And controlling the second switch to couple the second comparator input end with the second touch electrode, and calculating the first touched position of the first touch electrode and the second touch electrode.
於一實施例中,計算出第一被碰觸位置之步驟包含:藉由可變電容器單元自控制器接收調整信號,根據調整信號調整可變電容器單元之等效電容,其中可變電容器單元與控制器電性耦接,並與第一比較器輸入端及第二比較器輸入端中至少一者電性耦接;藉由控制器根據可變電容器單元之等效電容計算出第一被碰觸位置。 In an embodiment, the step of calculating the first touched position includes: receiving, by the variable capacitor unit, an adjustment signal from the controller, and adjusting an equivalent capacitance of the variable capacitor unit according to the adjustment signal, wherein the variable capacitor unit is The controller is electrically coupled and electrically coupled to at least one of the first comparator input and the second comparator input; the controller is configured to calculate the first touch according to the equivalent capacitance of the variable capacitor unit Touch the position.
於一實施例中,根據調整信號調整可變電容器單元之等效電容之步驟包含:藉由相互並聯耦接的多個可切換式電容器之一端選擇性地接收調整信號,且可切換式電容器之另一端共同耦接第一比較器輸入端及第二比較器輸入端中至少一者。 In an embodiment, the step of adjusting the equivalent capacitance of the variable capacitor unit according to the adjustment signal comprises: selectively receiving the adjustment signal by one end of the plurality of switchable capacitors coupled in parallel with each other, and the switchable capacitor The other end is coupled to at least one of the first comparator input and the second comparator input.
使用本揭示內容所提供之感應元件與感應方法時,僅需少量的觸控電極個數來達到高精度的觸控操作,不只降低製造成本,更可縮減觸控感應元件之面積,讓電子元件體積更小以及更輕量化,並提升使用者的使用者經驗。 When the sensing element and the sensing method provided by the disclosure are used, only a small number of touch electrodes are needed to achieve a high-precision touch operation, which not only reduces the manufacturing cost, but also reduces the area of the touch sensing element and allows the electronic component. Smaller and lighter, and enhance user experience.
本發明內容旨在提供本揭示內容的簡化摘要,以使閱讀者對本揭示內容具備基本的理解。此發明內容並非本揭示內容的完整概述,且其用意並非在指出本發明實施例的重要(或關鍵)元件或界定本發明的範圍。 This summary is intended to provide a simplified summary of the disclosure This Summary is not an extensive overview of the disclosure, and is intended to be illustrative of the embodiments of the invention.
100‧‧‧感應元件 100‧‧‧Inductive components
110‧‧‧控制器 110‧‧‧ Controller
120‧‧‧比較器 120‧‧‧ comparator
122‧‧‧第一比較器輸入端 122‧‧‧First comparator input
124‧‧‧第二比較器輸入端 124‧‧‧Second comparator input
132‧‧‧第一觸控電極 132‧‧‧First touch electrode
134‧‧‧第二觸控電極 134‧‧‧second touch electrode
140‧‧‧第一開關 140‧‧‧First switch
150‧‧‧第二開關 150‧‧‧second switch
160‧‧‧第三開關 160‧‧‧third switch
400‧‧‧感應方法 400‧‧‧Induction method
S410~S440‧‧‧步驟 S410~S440‧‧‧Steps
第1圖是依照本發明第一實施例繪示一種感應元件的示意圖;第2A至2C圖是依照本發明實施例繪示一種如第1圖所示感應元件中電容及電位變化的示意圖;第3圖係依照本發明實施例繪示一種如第1圖所示之可變電容器單元的示意圖;以及第4圖係依照本發明實施例繪示一種感應方法的流程圖。 1 is a schematic diagram showing an inductive component according to a first embodiment of the present invention; and FIGS. 2A to 2C are schematic diagrams showing changes in capacitance and potential in an inductive component as shown in FIG. 1 according to an embodiment of the present invention; 3 is a schematic diagram of a variable capacitor unit as shown in FIG. 1 according to an embodiment of the invention; and FIG. 4 is a flow chart showing a sensing method according to an embodiment of the invention.
下文係舉實施例配合所附圖式作詳細說明,但所提供之實施例並非用以限制本發明所涵蓋的範圍,而結構運作之描述非用以限制其執行之順序,任何由元件重新組合之結構,所產生具有均等功效的裝置,皆為本發明所涵蓋的範圍。此外,圖式僅以說明為目的,並未依照原尺寸作圖。為使便於理解,下述說明中相同元件將以相同之符號標示來說明。 The embodiments are described in detail below with reference to the accompanying drawings, but the embodiments are not intended to limit the scope of the invention, and the description of the structure operation is not intended to limit the order of execution, any component recombination The structure, which produces equal devices, is within the scope of the present invention. In addition, the drawings are for illustrative purposes only and are not drawn to the original dimensions. For ease of understanding, the same elements in the following description will be denoted by the same reference numerals.
在全篇說明書與申請專利範圍所使用之用詞(terms),除有特別註明外,通常具有每個用詞使用在此領域中、在此揭露之內容中與特殊內容中的平常意義。某些用以描述本揭露之用詞將於下或在此說明書的別處討論,以提供本領域技術人員在有關本揭露之描述上額外的引導。 The terms used in the entire specification and the scope of the patent application, unless otherwise specified, generally have the ordinary meaning of each term used in the field, the content disclosed herein, and the particular content. Certain terms used to describe the disclosure are discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in the description of the disclosure.
關於本文中所使用之『約』、『大約』、『大致』 或『基本上』一般通常係指數值之誤差或範圍,其依據不同技術而有不同變化,且其範圍對於本領域具通常知識者所理解係具有最廣泛的解釋,藉此涵蓋所有變形及類似結構。在一些實施例中,上述數值之誤差或範圍係指於百分之二十以內,較好地是於百分之十以內,而更佳地則是於百分之五以內。文中若無明確說明,其所提及的數值皆視作為近似值,例如可如『約』、『大約』、『大致』或『基本上』所表示的誤差或範圍,或其他近似值。 About the "about", "about", "roughly" used in this article Or "substantially" is generally the error or range of the index value, which varies from technology to technology, and the scope of which is the broadest interpretation of those of ordinary skill in the art, thereby encompassing all variants and the like. structure. In some embodiments, the error or range of the above values is within twenty percent, preferably within ten percent, and more preferably within five percent. In the text, unless otherwise stated, the numerical values referred to are regarded as approximations, such as the <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt;
關於本文中所使用之『第一』、『第二』、...等,並非特別指稱次序或順位的意思,亦非用以限定本發明,其僅僅是為了區別以相同技術用語描述的元件或操作而已。 The terms "first", "second", etc., as used herein, are not intended to refer to the order or the order, and are not intended to limit the invention, only to distinguish the elements described in the same technical terms. Or just operate.
其次,在本文中所使用的用詞『包含』、『包括』、『具有』、『含有』等等,均為開放性的用語,即意指包含但不限於。 Secondly, the terms "including", "including", "having", "containing", and the like, as used herein, are all open terms, meaning, but not limited to.
另外,關於本文中所使用之『耦接』或『連接』,均可指二或多個元件相互直接作實體或電性接觸,或是相互間接作實體或電性接觸,亦可指二或多個元件相互操作或動作。 In addition, the term "coupled" or "connected" as used herein may mean that two or more elements are in direct physical or electrical contact with each other, or indirectly in physical or electrical contact with each other, or Multiple components operate or act upon each other.
第1圖是依照本發明第一實施例繪示一種感應元件的示意圖。如第1圖所示,感應元件100可用以感應觸控電極被觸碰之位置,並可依據感應結果執行相應的功能或操作(如:控制後續電路、輸出數位資料信號、...等)。具體而言,使用者碰觸觸控式滑塊(slider),且觸控式滑塊包含兩個以上的觸控電極,感應元件100與觸控式滑塊下的觸控電極電性耦接,且使用者碰觸觸控式滑塊時,會碰觸到至少兩個觸控電 極,感應元件100透過觸控電極的電氣特性資訊,來獲得使用者碰觸觸控電極的位置,並根據位置執行相應的功能或操作。於第1圖所示之實施例中,感應元件100與第一觸控電極132和第二觸控電極134電性耦接。須注意到,本領域具通常知識者可依應用需求調整感應元件100所連接之觸控電極個數,本揭示內容不以此為限。 1 is a schematic view showing an inductive element in accordance with a first embodiment of the present invention. As shown in FIG. 1 , the sensing component 100 can be used to sense the position where the touch electrode is touched, and can perform corresponding functions or operations according to the sensing result (eg, controlling subsequent circuits, outputting digital data signals, etc.) . Specifically, the user touches the touch slider, and the touch slider includes two or more touch electrodes, and the sensing component 100 is electrically coupled to the touch electrode under the touch slider. And when the user touches the touch slider, at least two touches are touched The sensing element 100 transmits the electrical characteristic information of the touch electrode to obtain the position where the user touches the touch electrode, and performs a corresponding function or operation according to the position. In the embodiment shown in FIG. 1 , the sensing element 100 is electrically coupled to the first touch electrode 132 and the second touch electrode 134 . It should be noted that those skilled in the art can adjust the number of touch electrodes connected to the sensing component 100 according to the application requirements, and the disclosure is not limited thereto.
感應元件100包含控制器110、比較器120、第一開關140以及第二開關150。比較器120包含第一比較器輸入端122以及第二比較器輸入端124。第一開關140之一端與第一比較器輸入端122耦接,第一開關140之另一端與彼此互補之第一觸控電極132及第二觸控電極134中之一者耦接。第二開關150之一端與第二比較器輸入端124耦接,第二開關150另一端選擇性地與第二觸控電極134耦接。控制器110控制第一開關140與第二開關150。當第一觸控電極132與第二觸控電極134被碰觸時,控制器110控制第一開關140使第一比較器輸入端122與第一觸控電極132耦接,控制第二開關150使第二比較器輸入端124與第二觸控電極134耦接,再計算出第一觸控電極132與第二觸控電極134之第一被碰觸位置。 The sensing element 100 includes a controller 110, a comparator 120, a first switch 140, and a second switch 150. Comparator 120 includes a first comparator input 122 and a second comparator input 124. One end of the first switch 140 is coupled to the first comparator input 122, and the other end of the first switch 140 is coupled to one of the first touch electrode 132 and the second touch electrode 134 that are complementary to each other. One end of the second switch 150 is coupled to the second comparator input 124, and the other end of the second switch 150 is selectively coupled to the second touch electrode 134. The controller 110 controls the first switch 140 and the second switch 150. When the first touch electrode 132 and the second touch electrode 134 are touched, the controller 110 controls the first switch 140 to couple the first comparator input 122 to the first touch electrode 132, and controls the second switch 150. The second comparator input 124 is coupled to the second touch electrode 134, and the first touched position of the first touch electrode 132 and the second touch electrode 134 is calculated.
控制器110傳送開關控制信號SCS至第一開關140與第二開關150以控制開關狀態,於一實施例中,控制器110為一微控制器(microcontroller),第一開關140為一三路開關(three-way switch),第二開關150為一二路開關(two-way switch)。於另一實施例中,控制器110為一中 央處理器(central processor),第一開關140使用兩個二路開關實作而成,第二開關150為二路開關。本領域具通常知識者可使用其他電路元件實現上述元件,本揭示內容不限於所舉示例。 The controller 110 transmits the switch control signal SCS to the first switch 140 and the second switch 150 to control the switch state. In an embodiment, the controller 110 is a microcontroller, and the first switch 140 is a three-way switch. (three-way switch), the second switch 150 is a two-way switch. In another embodiment, the controller 110 is a middle In the central processor, the first switch 140 is implemented by using two two-way switches, and the second switch 150 is a two-way switch. Those skilled in the art can implement the above-described elements using other circuit elements, and the disclosure is not limited to the examples.
第一觸控電極132和第二觸控電極134彼此互補,於本實施例中,第一觸控電極132和第二觸控電極134同為三角形電極,陳列位置為對稱且自容值大約相同。本領域具通常知識者可使用其他形狀之觸控電極,例如長方形、山形(Chevron)等形狀,不受本揭示內容所舉示例之限制。 The first touch electrode 132 and the second touch electrode 134 are complementary to each other. In this embodiment, the first touch electrode 132 and the second touch electrode 134 are triangular electrodes, and the display position is symmetrical and the self-capacity values are about the same. . Other shapes of touch electrodes, such as rectangular, chevron, etc., may be used by those of ordinary skill in the art, and are not limited by the examples of the disclosure.
當使用者碰觸觸控式滑塊(slider)時,第一觸控電極132和第二觸控電極134同時被碰觸,第一觸控電極132和第二觸控電極134之電容對應第一觸控電極132和第二觸控電極134被碰觸位置產生變化,比較器120之第一比較器輸入端122或第二比較器輸入端124與第一觸控電極132或第二觸控電極134電性耦接,因此比較器120輸入端之電位亦產生對應改變,控制器110用以接收比較器120之輸出信號CP,偵測比較器120輸入端之電位改變,以量測電容變化並判斷被碰觸位置。 When the user touches the touch slider, the first touch electrode 132 and the second touch electrode 134 are simultaneously touched, and the capacitances of the first touch electrode 132 and the second touch electrode 134 correspond to the first A touch electrode 132 and a second touch electrode 134 are changed by the touch position, and the first comparator input 122 or the second comparator input 124 of the comparator 120 is coupled to the first touch electrode 132 or the second touch. The electrode 134 is electrically coupled, so that the potential of the input end of the comparator 120 also changes correspondingly. The controller 110 is configured to receive the output signal CP of the comparator 120, and detect the potential change at the input end of the comparator 120 to measure the capacitance change. And judge the position being touched.
控制器110於量測電容變化時,控制第一開關140將第一比較器輸入端122與第一觸控電極132耦接,並控制第二開關150將第二比較器輸入端124與第二觸控電極134耦接,此時比較器120之第一比較器輸入端122與第二比較器輸入端124分別耦接至互補的第一觸控電極132與第二觸控電極134,第一觸控電極132與第二觸控電極134彼 此互補,所受之雜訊亦相同,因此控制器110量測電容變化時,第一觸控電極132與第二觸控電極134所受雜訊將互相抵消,提升量測精度,可達到比傳統使用多個觸控按鍵實現的觸控式滑塊數倍的精準度。舉例而言,以同樣長度的觸控式滑塊而言,傳統使用多個觸控按鍵的觸控式滑塊僅可達到約30階的控制,然而,使用本揭示內容技術思想可將控制階數提升到70~80階。如此一來,僅需少數觸控電極即可透過觸控式滑塊達到精準的控制,不只縮小了感應元件100的面積,更以低廉的成本提供更佳使用者經驗。 The controller 110 controls the first switch 140 to couple the first comparator input 122 to the first touch electrode 132 and the second switch 150 to the second comparator input 124 and the second. The first comparator input 122 and the second comparator input 124 are coupled to the complementary first touch electrode 132 and the second touch electrode 134, respectively. Touch electrode 132 and second touch electrode 134 The noise is also the same. Therefore, when the controller 110 measures the capacitance change, the noise received by the first touch electrode 132 and the second touch electrode 134 cancels each other, and the measurement accuracy is improved. Traditionally, multiple touch buttons are used to achieve multiple times the accuracy of the touch slider. For example, with the same length of the touch slider, the conventional touch slider using multiple touch buttons can only achieve about 30 orders of control. However, the technical order can be controlled using the technical idea of the present disclosure. The number is increased to 70~80 steps. In this way, only a small number of touch electrodes can be used to achieve precise control through the touch slider, which not only reduces the area of the sensing element 100, but also provides better user experience at a low cost.
於一實施例中,感應元件100更包含可變電容器單元Cmn和可變電容器單元Cmp,兩者均與控制器110電性耦接,以自控制器110接收調整信號CS,可變電容器單元Cmn和可變電容器單元Cmp根據調整信號CS調整等效電容,於本實施例中,可變電容器單元Cmn與第一比較器輸入端122電性耦接,可變電容器單元Cmp與第二比較器輸入端124電性耦接,控制器110調整可變電容器單元Cmn和可變電容器單元Cmp之等效電容,並根據可變電容器單元Cmn和可變電容器單元Cmp之等效電容取得第一觸控電極132與第二觸控電極134因使用者觸碰所產生之電容變化,再計算出第一觸控電極132與第二觸控電極134之第一被碰觸位置。以下將進一步描述推算第一觸控電極132與第二觸控電極134之電容變化以及計算第一被碰觸位置之細節。 In an embodiment, the sensing component 100 further includes a variable capacitor unit Cmn and a variable capacitor unit Cmp, both of which are electrically coupled to the controller 110 to receive the adjustment signal CS from the controller 110, the variable capacitor unit Cmn. And the variable capacitor unit Cmp adjusts the equivalent capacitance according to the adjustment signal CS. In this embodiment, the variable capacitor unit Cmn is electrically coupled to the first comparator input terminal 122, and the variable capacitor unit Cmp and the second comparator input The terminal 124 is electrically coupled, and the controller 110 adjusts the equivalent capacitance of the variable capacitor unit Cmn and the variable capacitor unit Cmp, and obtains the first touch electrode according to the equivalent capacitance of the variable capacitor unit Cmn and the variable capacitor unit Cmp. The first touched position of the first touch electrode 132 and the second touch electrode 134 is calculated by the change of the capacitance of the second touch electrode 134 caused by the user touch. Details of estimating the capacitance change of the first touch electrode 132 and the second touch electrode 134 and calculating the first touched position will be further described below.
於一實施例中,可變電容器單元Cmn和可變電容器單元Cmp自控制器110接收驅動信號P,用以藉由驅動 信號P對第一比較器輸入端122及第二比較器輸入端124充電。可變電容器單元Cmn及可變電容器單元Cmp自控制器110接收相同之驅動信號P,因此可進一步抵消可變電容器單元Cmn及可變電容器單元Cmp所接收之雜訊。 In an embodiment, the variable capacitor unit Cmn and the variable capacitor unit Cmp receive the driving signal P from the controller 110 for driving Signal P charges first comparator input 122 and second comparator input 124. The variable capacitor unit Cmn and the variable capacitor unit Cmp receive the same drive signal P from the controller 110, so that the noise received by the variable capacitor unit Cmn and the variable capacitor unit Cmp can be further cancelled.
第2A至2C圖是依照本發明實施例繪示一種如第1圖所示感應元件中電容及電位變化的示意圖。具體而言,如第1圖和第2A至2C圖所示,以可變電容器單元Cmn和Cmp具有預設相同的等效電容為例,在第一觸控電極132與第二觸控電極134未作動(如:第一觸控電極132與第二觸控電極134未經觸碰)的情形下,電位VS(即第一比較器輸入端122之電位)與電位VDK(即第二比較器輸入端124之電位)可藉由可變電容器單元Cmn和Cmp以及驅動信號P充電至相同或相近的電位(如第2A圖)。 2A to 2C are schematic views showing changes in capacitance and potential in the sensing element shown in Fig. 1 according to an embodiment of the present invention. Specifically, as shown in FIG. 1 and FIG. 2A to FIG. 2C, the variable capacitor units Cmn and Cmp have the same equivalent equivalent capacitance as the example, and the first touch electrode 132 and the second touch electrode 134 are used. In the case of no actuation (eg, the first touch electrode 132 and the second touch electrode 134 are not touched), the potential VS (ie, the potential of the first comparator input terminal 122) and the potential VDK (ie, the second comparator) The potential of the input terminal 124 can be charged to the same or similar potential by the variable capacitor units Cmn and Cmp and the drive signal P (as shown in FIG. 2A).
於一實施例中,控制器110控制第一開關140使第一比較器輸入端122交替地與第一觸控電極132和第二觸控電極134電性耦接,且控制第二開關150斷開第二比較器輸入端124與第二觸控電極134,以判斷第一觸控電極132與第二觸控電極134之被碰觸狀態,舉例而言,控制器110控制第一開關140切換狀態之交替週期為數微秒(us)。具體而言,在第一觸控電極132與第二觸控電極134作動(如:第一觸控電極132與第二觸控電極134經手指、觸控筆、...等觸碰)的情形下,第一觸控電極132與第二觸控電極134與第一比較器輸入端122耦接的一端的電容值會產生變化,使得電位VS下降而低於電位VDK(如第2B圖),而控制器110則透過比較器120所產 生的比較器輸出信號CP偵測到第一比較器輸入端122電為下降,進而判斷出第一觸控電極132與第二觸控電極134被碰觸。 In one embodiment, the controller 110 controls the first switch 140 to electrically couple the first comparator input 122 to the first touch electrode 132 and the second touch electrode 134 alternately, and control the second switch 150 to be disconnected. The second comparator input 124 and the second touch electrode 134 are opened to determine the touched state of the first touch electrode 132 and the second touch electrode 134. For example, the controller 110 controls the first switch 140 to switch. The alternating period of states is a few microseconds (us). Specifically, the first touch electrode 132 and the second touch electrode 134 are activated (eg, the first touch electrode 132 and the second touch electrode 134 are touched by a finger, a stylus, etc.). In this case, the capacitance value of the end of the first touch electrode 132 and the second touch electrode 134 coupled to the first comparator input terminal 122 changes, so that the potential VS falls below the potential VDK (as shown in FIG. 2B). And the controller 110 is produced by the comparator 120. The raw comparator output signal CP detects that the first comparator input 122 is electrically lowered, thereby determining that the first touch electrode 132 and the second touch electrode 134 are touched.
當控制器110判斷第一觸控電極132與第二觸控電極134被碰觸時,控制第一開關140使第一比較器輸入端122與第一觸控電極132耦接,控制第二開關150使第二比較器輸入端124與第二觸控電極134耦接,可變電容器單元Cmn依據電位VS與電位VDK比較後所產生的比較器輸出信號CP作調整(如:可變電容器單元Cmn在作調整後可具有相對於可變電容器單元Cmp較大的等效電容),進而對第一比較器輸入端122進行電位補償,使得電位VTK再次上升(或下降)至與電位VDK相同或相近(如第2C圖),其中上述對應之電位或電容變化便可供後續進行資料的運算處理,以判斷觸控操作發生的位置,或藉此執行相應的觸控功能。 When the controller 110 determines that the first touch electrode 132 and the second touch electrode 134 are touched, the first switch 140 is controlled to couple the first comparator input 122 to the first touch electrode 132 to control the second switch. The second comparator input terminal 124 is coupled to the second touch electrode 134, and the variable capacitor unit Cmn is adjusted according to the comparator output signal CP generated after the potential VS is compared with the potential VDK (eg, the variable capacitor unit Cmn After adjustment, there may be a larger equivalent capacitance relative to the variable capacitor unit Cmp, and then the first comparator input 122 is potential-compensated such that the potential VTK rises (or falls) again to be the same as or similar to the potential VDK. (As shown in FIG. 2C), the corresponding potential or capacitance change can be used for subsequent processing of data to determine the location where the touch operation occurs, or to perform a corresponding touch function.
在其他實施例中,也可以是可變電容器單元Cmp依據電位VS與電位VDK比較後所產生的比較器輸出信號CP作調整(如:可變電容器單元Cmp在作調整後可具有相對於可變電容器單元Cmn較小的等效電容),進而對第二比較器輸入端124進行電位補償,使得電位VDK下降(或上升)至與電位VS相同或相近。又或是在其他的實施例中,可變電容器單元Cmp以及可變電容器單元Cmn可分別依據電位VTK與電位VS比較後所產生的比較器輸出信號CP作調整,進而對第二比較器輸入端124以及第一比較器輸入端122進行電位補償,使得電位VDK以及電位VS經補償後電位相同或相近。 In other embodiments, the variable capacitor unit Cmp may be adjusted according to the comparator output signal CP generated after the potential VS is compared with the potential VDK (eg, the variable capacitor unit Cmp may have a relative change after being adjusted) The capacitor cell Cmn has a smaller equivalent capacitance), and thus the second comparator input 124 is potential-compensated such that the potential VDK drops (or rises) to be the same or close to the potential VS. Or in other embodiments, the variable capacitor unit Cmp and the variable capacitor unit Cmn can be adjusted according to the comparator output signal CP generated by comparing the potential VTK with the potential VS, respectively, and then input to the second comparator. 124 and the first comparator input terminal 122 perform potential compensation such that the potential VDK and the potential VS are compensated after the potential is the same or similar.
控制器110用以接收比較器輸出信號CP而產生控 制信號CS控制可變電容器單元Cmn,以調整可變電容器單元Cmn之等效電容,使得可變電容器單元Cmn可相應地對第一比較器輸入端122進行電位補償。在其他實施例中,控制信號CS用以調整可變電容器單元Cmp之等效電容,使得可變電容器單元Cmp可相應地對第二比較器輸入端124進行電位補償。再又一些實施例中,是控制信號CS也可分別去調整可變電容器單元Cmp以及可變電容器單元Cmn之等效電容,使得可變電容器單元Cmp以及可變電容器單元Cmn可相應地對第二比較器輸入端124以及第一比較器輸入端122進行電位補償。 The controller 110 is configured to receive the comparator output signal CP to generate a control The signal CS controls the variable capacitor unit Cmn to adjust the equivalent capacitance of the variable capacitor unit Cmn such that the variable capacitor unit Cmn can accordingly compensate the first comparator input 122 with potential. In other embodiments, the control signal CS is used to adjust the equivalent capacitance of the variable capacitor unit Cmp such that the variable capacitor unit Cmp can correspondingly compensate the second comparator input 124. In still other embodiments, the control signal CS can also separately adjust the equivalent capacitance of the variable capacitor unit Cmp and the variable capacitor unit Cmn, so that the variable capacitor unit Cmp and the variable capacitor unit Cmn can be correspondingly second. The comparator input 124 and the first comparator input 122 perform potential compensation.
在本發明的實施例中,「電位補償」除了可以指提高比較器輸入端的電位,亦可以用以指調降比較器輸入端的電位,亦即比較器輸入端的電位可經電位補償而增加或減少。 In the embodiment of the present invention, "potential compensation" may refer to increasing the potential at the input of the comparator, and may also be used to decrease the potential at the input of the comparator, that is, the potential at the input of the comparator may be increased or decreased by the potential compensation. .
進行電位補償後,控制器110根據可變電容器單元Cmp以及可變電容器單元Cmn之等效電容差異,計算出第一觸控電極132和第二觸控電極134之電容值差異。以下將以第1圖所繪示之實施例加以說明,於此實施例中,當使用者未碰觸第一觸控電極132和第二觸控電極134時,第一觸控電極132和第二觸控電極134之自容值大約相同,當使用者碰觸第一觸控電極132和第二觸控電極134時,第一觸控電極132與第二觸控電極134之等效電容同時增加,但第一觸控電極132與第二觸控電極134之等效電容增加量並不相同,由於幾何配置之故,當使用者碰觸位置越往上時,第一觸控電極132之等效電容增加量越多,則第二觸控電極134之等效電容增加量越少,控制器110根據第一觸控電極132與第二觸控電極134之等效 電容差異計算出第一被碰觸位置。 After the potential compensation is performed, the controller 110 calculates the difference in capacitance values of the first touch electrode 132 and the second touch electrode 134 according to the difference in capacitance between the variable capacitor unit Cmp and the variable capacitor unit Cmn. The following is a description of the embodiment shown in FIG. 1 . In this embodiment, when the user does not touch the first touch electrode 132 and the second touch electrode 134 , the first touch electrode 132 and the first The self-capacitance values of the second touch electrodes 134 are about the same. When the user touches the first touch electrodes 132 and the second touch electrodes 134, the equivalent capacitances of the first touch electrodes 132 and the second touch electrodes 134 are simultaneously The increase in the equivalent capacitance of the first touch electrode 132 and the second touch electrode 134 is not the same. Due to the geometric arrangement, when the user touches the position, the first touch electrode 132 The more the equivalent capacitance increase is, the less the equivalent capacitance increase of the second touch electrode 134 is, and the controller 110 is equivalent to the first touch electrode 132 and the second touch electrode 134. The difference in capacitance calculates the first touched position.
舉例而言,當使用者碰觸位置較靠近第二觸控電極134之上緣時(即靠近第二觸控電極134較寬部分),由於電容值與面積成正比且與距離成反比,故第二觸控電極134之等效電容增加量較大,而第一觸控電極132之等效電容增加量較小,故第二觸控電極134之等效電容值將高於第一觸控電極132;當使用者碰觸位置較靠近第二觸控電極134之下緣時(即靠近第二觸控電極134較窄部分),第二觸控電極134之等效電容增加量較小,而第一觸控電極132之等效電容增加量較大,故第二觸控電極134之等效電容值將低於第一觸控電極132。控制器110於傳送控制信號CS至第一可變電容器單元Cmn和第二可變電容器單元Cmp以進行電位補償,接著根據第一可變電容器單元Cmn和第二可變電容器單元Cmp之等效電容之差異,推知第一觸控電極132與第二觸控電極134之等效電容之差異,並計算出第一被觸碰位置。 For example, when the user touches the upper edge of the second touch electrode 134 (ie, is closer to the wider portion of the second touch electrode 134), since the capacitance value is proportional to the area and inversely proportional to the distance, The equivalent capacitance of the second touch electrode 134 is increased, and the equivalent capacitance of the first touch electrode 132 is smaller. Therefore, the equivalent capacitance of the second touch electrode 134 is higher than the first touch. The electrode 132 has a smaller amount of equivalent capacitance increase of the second touch electrode 134 when the user touches the lower edge of the second touch electrode 134 (ie, is closer to the narrower portion of the second touch electrode 134). The equivalent capacitance of the first touch electrode 132 is increased, so that the equivalent capacitance of the second touch electrode 134 will be lower than that of the first touch electrode 132. The controller 110 transmits the control signal CS to the first variable capacitor unit Cmn and the second variable capacitor unit Cmp for potential compensation, and then according to the equivalent capacitance of the first variable capacitor unit Cmn and the second variable capacitor unit Cmp. For the difference, the difference between the equivalent capacitances of the first touch electrode 132 and the second touch electrode 134 is inferred, and the first touched position is calculated.
需注意到,於第1圖所繪示之實施例中,第一觸控電極132與第二觸控電極134之寬度非均勻分布,以放大第一觸控電極132與第二觸控電極134之等效電容值差異,控制器110再用以根據第一觸控電極132與第二觸控電極134之寬度資訊計算第一被碰觸位置。如此一來,使用兩個觸控電極即可得到高精度的觸控式滑塊,同時由於所需觸控電極數量降低,生產製程難度同時下降,節省生產成本。 It should be noted that, in the embodiment illustrated in FIG. 1 , the widths of the first touch electrodes 132 and the second touch electrodes 134 are non-uniformly distributed to enlarge the first touch electrodes 132 and the second touch electrodes 134 . The controller 110 is further configured to calculate the first touched position according to the width information of the first touch electrode 132 and the second touch electrode 134. In this way, the high-precision touch-type slider can be obtained by using two touch electrodes, and at the same time, the number of required touch electrodes is reduced, the manufacturing process difficulty is simultaneously reduced, and the production cost is saved.
第3圖係依照本發明實施例繪示一種如第1圖所示之可變電容器單元Cmn的示意圖。如第1圖和第3圖所示,可 變電容器單元Cmn包括數個可切換式電容器(如:可切換式電容器C1、C2、C3、C4),且可切換式電容器C1、C2、C3、C4相互並聯耦接,其中可切換式電容器C1、C2、C3、C4的一端用以選擇性地接收驅動信號P,且可切換式電容器C1、C2、C3、C4的另一端共同耦接第一比較器輸入端122。 FIG. 3 is a schematic view showing a variable capacitor unit Cmn as shown in FIG. 1 according to an embodiment of the invention. As shown in Figures 1 and 3, The variable capacitor unit Cmn includes a plurality of switchable capacitors (eg, switchable capacitors C1, C2, C3, C4), and the switchable capacitors C1, C2, C3, C4 are coupled in parallel with each other, wherein the switchable capacitor C1 One ends of C2, C3, and C4 are used to selectively receive the driving signal P, and the other ends of the switchable capacitors C1, C2, C3, and C4 are commonly coupled to the first comparator input terminal 122.
在一些實施例中,當控制器110輸出控制信號CS至可變電容器單元Cmn時,可切換式電容器C1、C2、C3、C4所對應的開關K1、K2、K3、K4可依據控制信號CS各自切換為導通或關閉狀態,使得可切換式電容器C1、C2、C3、C4各自開啟或關閉,藉此讓可變電容器單元Cmn的等效電容得以依據控制信號CS進行相應的調整。上述與可變電容器單元Cmn相關之描述亦適用於可變電容器單元Cmp。另外,本領豫具通常知識者可使用其他電路元件實作可變電容器單元Cmn與Cmp,並不限於本揭示內容所舉示例。 In some embodiments, when the controller 110 outputs the control signal CS to the variable capacitor unit Cmn, the switches K1, K2, K3, K4 corresponding to the switchable capacitors C1, C2, C3, C4 may be respectively controlled according to the control signal CS. Switching to the on or off state causes the switchable capacitors C1, C2, C3, C4 to be turned on or off, respectively, whereby the equivalent capacitance of the variable capacitor unit Cmn is adjusted accordingly according to the control signal CS. The above description relating to the variable capacitor unit Cmn also applies to the variable capacitor unit Cmp. In addition, the person skilled in the art can use other circuit elements to implement the variable capacitor units Cmn and Cmp, and is not limited to the examples cited in the present disclosure.
再又一些實施例中,感應元件100更包含第三開關160,第三開關160之一端與第二比較器輸入端124耦接,第三開關160之另一端選擇性地與第一觸控電極132耦接。控制器110計算出第一被碰觸位置後,控制第一開關140使第一比較器輸入端122與第二觸控電極134耦接,控制第二開關150斷開第二比較器輸入端124與第二觸控電極134,控制第三開關160使第二比較器輸入端124與第一觸控電極132耦接,再計算出第一觸控電極132與第二觸控電極134之第二被碰觸位置,並利用第二被碰觸位置修正第一被碰觸位置。 In still another embodiment, the sensing component 100 further includes a third switch 160. One end of the third switch 160 is coupled to the second comparator input 124, and the other end of the third switch 160 is selectively coupled to the first touch electrode. 132 is coupled. After the controller 110 calculates the first touched position, the first switch 140 is controlled to couple the first comparator input 122 with the second touch electrode 134, and the second switch 150 is controlled to open the second comparator input 124. And the second touch electrode 134, the third switch 160 is controlled to couple the second comparator input 124 to the first touch electrode 132, and the second touch electrode 132 and the second touch electrode 134 are calculated. The position is touched, and the first touched position is corrected by the second touched position.
於上述之操作中,控制器110傳送開關控制信號SCS至第一開關140、第二開關150以及第三開關160,並將第一比較器輸入端122與第二比較器輸入端124分別改為與第二觸控電極134和第一觸控電極132電性耦接,亦即,控制器110將比較器120輸入端和觸控電極(包含第一觸控電極132和第二觸控電極134)之電性耦接做交換,並以上述計算第一被碰觸位置之方法計算出第二被碰觸位置,再利用第二被碰觸位置修正第一被碰觸位置。舉例而言,控制器110計算第一被碰觸位置和第二被碰觸位置之平均位置,本領域具通常知識者可使用其他方式結合第一被碰觸位置和第二被碰觸位置,並不限於上述所舉示例。控制器110透過兩次量測與計算,再度提升觸控式滑塊的精準度。如上所述,感應元件100透過控制第一開關140與第二開關150,改變第一觸控電極132與第二觸控電極134與比較器120之輸入端的耦接方式,提升觸控式滑塊的碰觸位置解析度,於本實施例中,感應元件100透過增加第三開關160改變第一觸控電極132與第二觸控電極134與比較器120之輸入端的耦接方式,可進一步將控制階數提升為僅使用第一開關140與第二開關150時的兩倍。 In the above operation, the controller 110 transmits the switch control signal SCS to the first switch 140, the second switch 150, and the third switch 160, and changes the first comparator input 122 and the second comparator input 124 to the second comparator input 124, respectively. The controller 110 is electrically coupled to the second touch electrode 134 and the first touch electrode 132, that is, the controller 110 inputs the comparator 120 and the touch electrode (including the first touch electrode 132 and the second touch electrode 134). The electrical coupling is exchanged, and the second touched position is calculated by the above method of calculating the first touched position, and the first touched position is corrected by the second touched position. For example, the controller 110 calculates an average position of the first touched position and the second touched position, and a person skilled in the art may combine the first touched position and the second touched position in other manners. It is not limited to the examples given above. The controller 110 re-improves the accuracy of the touch slider through two measurements and calculations. As described above, the sensing component 100 changes the coupling manner of the first touch electrode 132 and the second touch electrode 134 and the input end of the comparator 120 by controlling the first switch 140 and the second switch 150 to enhance the touch slider. In the present embodiment, the sensing element 100 changes the coupling manner of the first touch electrode 132 and the second touch electrode 134 and the input end of the comparator 120 by adding the third switch 160, and further The control order is increased to twice as large as when only the first switch 140 and the second switch 150 are used.
由前述實施例可知,應用上述的感應元件100於觸控感應裝置中,便可以有限的電路設計(如:僅需兩個觸控電極的接腳)及有限的電容器達成相當靈敏的觸控式滑塊之感應操作,以節省相關電路及電容器的設置,進而縮減電路及電容器所佔的電路佈局(layout)面積,使得觸控感應裝置的相 應尺寸得以有效地縮減。另外,由於所需觸控電極之數量減少,製程難度也因此下降,使得製作成本得以有效降低。 It can be seen from the foregoing embodiments that the sensing element 100 is applied to the touch sensing device, and a limited circuit design (eg, only two pins of the touch electrode) and a limited capacitor can be used to achieve a relatively sensitive touch. Inductive operation of the slider to save the arrangement of related circuits and capacitors, thereby reducing the circuit layout area occupied by the circuit and the capacitor, so that the phase of the touch sensing device The size should be effectively reduced. In addition, since the number of required touch electrodes is reduced, the process difficulty is also reduced, so that the manufacturing cost can be effectively reduced.
第4圖係依照本發明實施例繪示一種感應方法的流程圖。感應方法400包含數個步驟,以使用少量的觸控電極,精準偵測出使用者操作觸控式滑塊(slider)的碰觸位置。為了方便及清楚說明,以下對於感應方法400的說明以第1圖所示的感應元件100為例,但本揭示內容並不以此為限。應瞭解到,雖然流程圖中對於感應方法400係以特定順序之步驟來描述,然此並不限制本發明內容所提及步驟之前後順序,在實作中可增加或減少所述步驟。 FIG. 4 is a flow chart showing a sensing method according to an embodiment of the invention. The sensing method 400 includes a number of steps to accurately detect the touch position of the user operating the touch slider using a small number of touch electrodes. For convenience and clarity of explanation, the following description of the sensing method 400 is exemplified by the sensing element 100 shown in FIG. 1, but the disclosure is not limited thereto. It should be understood that although the method of sensing 400 is described in a particular order of steps in the flow chart, this does not limit the order of the steps referred to in the present disclosure, and the steps may be added or subtracted in practice.
感應元件100藉由控制器110控制第一開關140使比較器120之第一比較器輸入端122與第一觸控電極132及第二觸控電極134中之一者電性耦接,並藉由控制器110控制第二開關150,使比較器120之第二比較器輸入端124選擇性地與第二觸控電極134電性耦接(步驟S410)。控制器110控制第二開關150使第二比較器輸入端124不與觸控電極連接,故使用者碰觸第一觸控電極132及第二觸控電極134時,不改變第二比較器輸入端124之電氣特性,感應元件100透過第一比較器輸入端122與第一觸控電極132或第二觸控電極134之電性耦接,並藉由比較器120比較第一比較器輸入端122與第二比較器輸入端124之電位,以偵測第一觸控電極132與第二觸控電極134之等效電容是否發生改變。實施細節如上所述,於此不再贅述。 The first sensor 140 is electrically coupled to the first touch sensor 132 and the second touch electrode 134 of the comparator 120 by the controller 110. The second switch 150 is controlled by the controller 110 to electrically couple the second comparator input 124 of the comparator 120 to the second touch electrode 134 (step S410). The controller 110 controls the second switch 150 so that the second comparator input 124 is not connected to the touch electrode. Therefore, when the user touches the first touch electrode 132 and the second touch electrode 134, the second comparator input is not changed. The electrical characteristics of the terminal 124 are electrically coupled to the first touch electrode 132 or the second touch electrode 134 through the first comparator input 122, and the first comparator input is compared by the comparator 120. And a potential of the second comparator input 124 to detect whether the equivalent capacitance of the first touch electrode 132 and the second touch electrode 134 is changed. The implementation details are as described above and will not be described here.
於一實施例中,感應元件100藉由控制器110 控制第一開關140,使第一比較器輸入端122交替地與第一觸控電極132和第二觸控電極134電性耦接,且控制第二開關150斷開第二比較器輸入端124與第二觸控電極134,以判斷第一觸控電極132與第二觸控電極134之被碰觸狀態實施細節如上所述,於此不再贅述。 In an embodiment, the sensing component 100 is controlled by the controller 110. The first switch 140 is controlled to electrically couple the first comparator input 122 to the first touch electrode 132 and the second touch electrode 134, and the second switch 150 is controlled to open the second comparator input 124. The details of the touch state of the first touch electrode 132 and the second touch electrode 134 are as described above, and are not described herein.
感應元件100在第一觸控電極132與第二觸控電極134被碰觸時,藉由控制器110控制第一開關140使第一比較器輸入端122與第一觸控電極132耦接,並控制第二開關150使第二比較器輸入端124與第二觸控電極134耦接,並計算出第一觸控電極132與第二觸控電極134之第一被碰觸位置(步驟S420)。感應元件100將第一觸控電極132與第二觸控電極134分別與第一比較器輸入端122和第二比較器輸入端124電性耦接,再對第一觸控電極132與第二觸控電極134進行電位補償,如此一來,可抵消第一觸控電極132與與第二觸控電極134所接收雜訊,並利用第一觸控電極132與第二觸控電極134之互補設置計算出高精準度之第一被碰觸位置。 When the first touch electrode 132 and the second touch electrode 134 are touched, the first switch 140 is coupled to the first touch electrode 132 by the controller 110. And controlling the second switch 150 to couple the second comparator input 124 to the second touch electrode 134, and calculating the first touched position of the first touch electrode 132 and the second touch electrode 134 (step S420) ). The sensing element 100 electrically couples the first touch electrode 132 and the second touch electrode 134 to the first comparator input 122 and the second comparator input 124, respectively, and then the first touch electrode 132 and the second The touch electrode 134 performs potential compensation, so that the noise received by the first touch electrode 132 and the second touch electrode 134 can be cancelled, and the first touch electrode 132 and the second touch electrode 134 are complementary. Set the first touched position to calculate high accuracy.
於一實施例中,感應元件100藉由控制器根據第一觸控電極132與第二觸控電極134之寬度資訊計算第一被碰觸位置,且第一觸控電極132與第二觸控電極134之寬度非均勻分布。透過寬度非均勻分布的第一觸控電極132與第二觸控電極134,使用者碰觸時所造成第一觸控電極132與第二觸控電極134之等效電容差異值提高,並達到提昇觸控感應之靈敏度與解析度之目的。 In one embodiment, the sensing component 100 calculates a first touched position according to the width information of the first touch electrode 132 and the second touch electrode 134, and the first touch electrode 132 and the second touch The width of the electrode 134 is non-uniformly distributed. When the first touch electrode 132 and the second touch electrode 134 are non-uniformly distributed, the difference in the equivalent capacitance between the first touch electrode 132 and the second touch electrode 134 is increased when the user touches Improve the sensitivity and resolution of touch sensing.
於一實施例中,感應元件100於進行計算第一被 碰觸位置之步驟時,藉由比較器120之第一比較器輸入端122與第二比較器輸入端124分別電性耦接的可變電容器單元Cmn與Cmp,自控制器110接收調整信號CS,根據調整信號CS調整可變電容器單元Cmn與Cmp之等效電容,且可變電容器單元Cmn與Cmp與控制器110電性耦接,並與第一比較器輸入端122及第二比較器輸入端124中至少一者電性耦接。控制器110則是根據比較器120之輸出信號CP傳送調整信號CS至可變電容器單元Cmn與Cmp。舉例而言,控制器110傳送調整信號CS調整可變電容器單元Cmn與Cmp之等效電容,使第一比較器輸入端122與第二比較器輸入端124之電位相同,並根據可變電容器單元Cmn與Cmp之等效電容之差異推算出第一觸控電極132與第二觸控電極134之等效電容之差異並再據以計算出第一被碰觸位置。控制器110調整可變電容器單元Cmn與Cmp之等效電容以及計算第一被碰觸位置之細節如上所述,於此不再贅述之。 In an embodiment, the sensing component 100 performs the first calculation When the step of touching the position, the variable capacitor units Cmn and Cmp electrically coupled to the first comparator input 122 and the second comparator input 124 of the comparator 120 respectively receive the adjustment signal CS from the controller 110. Adjusting the equivalent capacitance of the variable capacitor units Cmn and Cmp according to the adjustment signal CS, and the variable capacitor units Cmn and Cmp are electrically coupled to the controller 110, and are input to the first comparator input 122 and the second comparator. At least one of the ends 124 is electrically coupled. The controller 110 transmits the adjustment signal CS to the variable capacitor units Cmn and Cmp according to the output signal CP of the comparator 120. For example, the controller 110 transmits an adjustment signal CS to adjust the equivalent capacitance of the variable capacitor units Cmn and Cmp such that the potentials of the first comparator input 122 and the second comparator input 124 are the same, and according to the variable capacitor unit. The difference between the equivalent capacitances of Cmn and Cmp is derived by calculating the difference between the equivalent capacitances of the first touch electrodes 132 and the second touch electrodes 134 and calculating the first touched position. The controller 110 adjusts the equivalent capacitance of the variable capacitor units Cmn and Cmp and calculates the details of the first touched position as described above, and will not be described again.
在另一實施例中,在調整可變電容器單元Cmn與Cmp之等效電容之步驟中,感應元件100藉由相互並聯耦接的多個可切換式電容器之一端選擇性地接收調整信號CS,以改變可變電容器單元Cmn與Cmp之等效電容,可切換式電容器之另一端共同耦接至第一比較器輸入端122及第二比較器輸入端124中至少一者,實施細節如上所述,於此不再贅述。 In another embodiment, in the step of adjusting the equivalent capacitance of the variable capacitor units Cmn and Cmp, the sensing element 100 selectively receives the adjustment signal CS by one end of the plurality of switchable capacitors coupled in parallel with each other, To change the equivalent capacitance of the variable capacitor units Cmn and Cmp, the other end of the switchable capacitor is commonly coupled to at least one of the first comparator input 122 and the second comparator input 124, the implementation details are as described above. This will not be repeated here.
於一實施例中,感應元件100透過可變電容器單元Cmp和Cmn自控制器110接收驅動信號P,並根據驅動信號P對第一比較器輸入端122及第二比較器輸入端124充電(步驟 S430),如上所述,可變電容器單元Cmp和Cmn之自容值可定為相同,並透過驅動信號P將第一比較器輸入端122及第二比較器輸入端124充電至相同電位,在第一觸控電極132與第二觸控電極134被碰觸時,第一比較器輸入端122之電位VS下降,感應元件100可根據第一比較器輸入端122及第二比較器輸入端124之電位差異偵測第一觸控電極132與第二觸控電極134之被碰觸狀態。 In one embodiment, the sensing component 100 receives the driving signal P from the controller 110 through the variable capacitor units Cmp and Cmn, and charges the first comparator input 122 and the second comparator input 124 according to the driving signal P (steps) S430), as described above, the self-capacitance values of the variable capacitor units Cmp and Cmn may be the same, and the first comparator input terminal 122 and the second comparator input terminal 124 are charged to the same potential through the driving signal P, When the first touch electrode 132 and the second touch electrode 134 are touched, the potential VS of the first comparator input terminal 122 decreases, and the sensing component 100 can be according to the first comparator input terminal 122 and the second comparator input terminal 124. The potential difference detects the touched state of the first touch electrode 132 and the second touch electrode 134.
於另一實施例中,感應元件100更藉由控制器110控制第一開關140使第一比較器輸入端122與第二觸控電極134耦接,控制第二開關150斷開第二比較器輸入端124與第二觸控電極134,控制第三開關160使第二比較器輸入端124與第一觸控電極132耦接,並藉由控制器110再計算出第一觸控電極132與第二觸控電極134之第二被碰觸位置,並利用第二被碰觸位置修正第一被碰觸位置(步驟S440)。具體而言,控制器110將第一比較器輸入端122與第二比較器輸入端124分別改為與第二觸控電極134和第一觸控電極132電性耦接,並以計算第一被碰觸位置之方法計算出第二被碰觸位置,再根據第二被碰觸位置修正第一被碰觸位置,實施細節如上所述,於此不再贅述。 In another embodiment, the sensing component 100 further controls the first switch 140 to couple the first comparator input 122 to the second touch electrode 134, and controls the second switch 150 to disconnect the second comparator. The input terminal 124 and the second touch electrode 134 control the third switch 160 to couple the second comparator input 124 to the first touch electrode 132, and calculate the first touch electrode 132 by the controller 110. The second touched position of the second touch electrode 134 is used to correct the first touched position by the second touched position (step S440). Specifically, the controller 110 electrically couples the first comparator input 122 and the second comparator input 124 to the second touch electrode 134 and the first touch electrode 132, respectively, and calculates the first The second touched position is calculated by the method of touching the position, and the first touched position is corrected according to the second touched position. The implementation details are as described above, and details are not described herein again.
由前述實施例可知,本揭示內容所描述之感應元件100與感應方法400應用於觸控式滑塊中,即可以降低觸控式滑塊的感應元件電路設計的面積及有限的電容器達成相當靈敏的觸控式滑塊之感應操作,進而縮減電路及電容器所佔的電路佈局(layout)面積,使得觸控感應裝置的尺寸得以有效 地縮減。另外,由於所需觸控電極之數量減少,製程中控制觸控電極之自容值大約相同之難度也同時下降,使得製作成本得以有效降低。 It can be seen from the foregoing embodiments that the sensing element 100 and the sensing method 400 described in the present disclosure are applied to the touch slider, that is, the area of the sensing element circuit design of the touch slider can be reduced, and the limited capacitor is quite sensitive. Inductive operation of the touch slider, thereby reducing the circuit layout area occupied by the circuit and the capacitor, so that the size of the touch sensing device is effective Reduction. In addition, since the number of required touch electrodes is reduced, the difficulty in controlling the self-capacitance values of the touch electrodes in the process is also reduced at the same time, so that the manufacturing cost is effectively reduced.
雖然本發明已以實施方式揭露如上,然其並非用以限定本發明,任何本領域具通常知識者,在不脫離本發明之精神和範圍內,當可作各種之更動與潤飾,因此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。 The present invention has been disclosed in the above embodiments, but it is not intended to limit the invention, and the present invention may be modified and modified without departing from the spirit and scope of the invention. The scope of protection is subject to the definition of the scope of the patent application.
100‧‧‧感應元件 100‧‧‧Inductive components
110‧‧‧控制器 110‧‧‧ Controller
120‧‧‧比較器 120‧‧‧ comparator
122‧‧‧第一比較器輸入端 122‧‧‧First comparator input
124‧‧‧第二比較器輸入端 124‧‧‧Second comparator input
132‧‧‧第一觸控電極 132‧‧‧First touch electrode
134‧‧‧第二觸控電極 134‧‧‧second touch electrode
140‧‧‧第一開關 140‧‧‧First switch
150‧‧‧第二開關 150‧‧‧second switch
160‧‧‧第三開關 160‧‧‧third switch
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