TW201629501A - Capacitance measurement system and capacitance measurement method - Google Patents
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Abstract
Description
本發明是有關於一種觸控面板，且特別是有關於一種應用於觸控面板之電容量測系統及電容量測方法。 The present invention relates to a touch panel, and more particularly to a capacitance measuring system and a capacitance measuring method applied to a touch panel.
觸控面板(touch panel)的應用非常廣泛，例如自動櫃員機、銷售點終端機、工業控制系統等。近年來，隨著可攜式電子產品(例如智慧型手機及平板電腦)的普及，觸控面板提供更方便的輸入方式。觸控面板主要分為電阻式(resistive)觸控面板及電容式(capacitive)觸控面板。就電容式觸控面板而言，以手指接觸面板來進行操作。 Touch panels are used in a wide variety of applications, such as automated teller machines, point-of-sale terminals, industrial control systems, and more. In recent years, with the popularity of portable electronic products (such as smart phones and tablets), touch panels provide a more convenient input method. The touch panel is mainly divided into a resistive touch panel and a capacitive touch panel. In the case of a capacitive touch panel, the operation is performed by touching the panel with a finger.
在電容式觸控面板(以下通稱觸控面板)的生產製造上，為了確保觸控面板的精準度符合規格需求，通常會對整批的觸控面板進行抽檢，而抽檢的過程會在多個選定的量測點上觸碰觸控面板並經由觸控面板來讀取所量測到的電容值。當所量測到的電容值落在預設範圍內時，則認定這批觸控面板的抽檢合格。 In the production of capacitive touch panels (hereinafter referred to as touch panels), in order to ensure the accuracy of the touch panel meets the specifications, the entire batch of touch panels is usually sampled, and the sampling process will be multiple. Touching the touch panel on the selected measurement point and reading the measured capacitance value through the touch panel. When the measured capacitance value falls within the preset range, it is determined that the sampling of the touch panel is qualified.
然而，上述的抽檢過程僅針對觸控面板的某些點的電容值進行量測，以判斷所量測的電容值是否落在預設範圍內。然而，有時使用者會反映觸控面板的某些區域有觸控不良的情況發生，然而上述的抽檢過程無法針對觸控面板的整面進行評估。 However, the above-mentioned sampling process only measures the capacitance value of some points of the touch panel to determine whether the measured capacitance value falls within a preset range. However, sometimes the user may reflect that some areas of the touch panel have poor touch, but the above-mentioned sampling process cannot evaluate the entire surface of the touch panel.
本發明提供一種電容量測系統，用以量測觸控面板的電容值並對應量測結果產生彩色圖像。 The invention provides a capacitance measuring system for measuring the capacitance value of the touch panel and generating a color image corresponding to the measurement result.
本發明提供一種電容量測方法，用以量測觸控面板的電容值並對應量測結果產生彩色圖像。 The present invention provides a capacitance measuring method for measuring a capacitance value of a touch panel and generating a color image corresponding to the measurement result.
本發明的一種電容量測系統包括一三維移動設備、一觸控頭及一控制主機。觸控頭連接至三維移動設備。控制主機電性連接至三維移動設備及觸控面板。控制主機藉由控制三維移動設備來移動觸控頭，以依照一觸控面板的整面上以矩陣方式排列之多個量測點的位置來觸碰觸控面板，並讀取觸控面板的各量測點被觸控頭觸碰時的量測電容值。控制主機依照這些量測點的這些量測電容值產生一彩色圖像，以表現觸控面板整面的量測電容值的分佈。 A capacitance measuring system of the present invention includes a three-dimensional mobile device, a touch head and a control host. The touch head is connected to a three-dimensional mobile device. The control host is electrically connected to the 3D mobile device and the touch panel. The control host moves the touch head by controlling the three-dimensional mobile device to touch the touch panel according to the positions of the plurality of measurement points arranged in a matrix on the entire surface of the touch panel, and reads the touch panel. The measured capacitance value when each measuring point is touched by the touch head. The control host generates a color image according to the measured capacitance values of the measurement points to represent the distribution of the measured capacitance values of the entire surface of the touch panel.
本發明的一種電容量測方法包括下列步驟。藉由一控制主機控制一三維移動設備以移動一觸控頭，以依照一觸控面板的整面上以矩陣方式排列之多個量測點的位置來觸碰觸控面板，並讀取觸控面板的各量測點被觸控頭觸碰時的量測電容值。藉由控 制主機依照這些量測點的這些量測電容值產生一彩色圖像，以表現觸控面板整面的量測電容值的分佈。 A capacitance measuring method of the present invention includes the following steps. Controlling a three-dimensional mobile device by a control host to move a touch head to touch the touch panel according to the positions of the plurality of measurement points arranged in a matrix on the entire surface of the touch panel, and to read the touch The measured capacitance value of each measuring point of the control panel is touched by the touch head. By controlling The host computer generates a color image according to the measured capacitance values of the measurement points to represent the distribution of the measured capacitance values of the entire surface of the touch panel.
基於上述，在本發明中，量測觸控面板整面的電容值，並依照所量測的電容值來產生一彩色圖像，以表現觸控面板整面的電容值的分佈。因此，使用者可依照彩色圖像的顏色來判斷觸控面板的所有量測點的電容值是否在預設範圍內，亦可依照彩色圖像的顏色變化來判斷觸控面板的某個區域內的電容值落差是否過大。 Based on the above, in the present invention, the capacitance value of the entire surface of the touch panel is measured, and a color image is generated according to the measured capacitance value to represent the distribution of the capacitance value of the entire surface of the touch panel. Therefore, the user can determine whether the capacitance value of all the measurement points of the touch panel is within a preset range according to the color of the color image, and can also determine a certain area of the touch panel according to the color change of the color image. Is the capacitance value drop too large?
為讓本發明的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 invention will be apparent from the following description.
50‧‧‧觸控面板 50‧‧‧ touch panel
100‧‧‧電容量測系統 100‧‧‧Capacity Measurement System
110‧‧‧三維移動設備 110‧‧‧3D mobile devices
120‧‧‧觸控頭 120‧‧‧Touch head
130‧‧‧控制主機 130‧‧‧Control host
200‧‧‧彩色圖像 200‧‧‧ color image
201‧‧‧色塊 201‧‧‧ color blocks
S102、S104‧‧‧步驟 S102, S104‧‧‧ steps
圖1是本發明的一實施例的一種電容量測系統的示意圖。 1 is a schematic diagram of a capacitance measuring system in accordance with an embodiment of the present invention.
圖2是量測觸控面板整面所得出的量測結果的示意圖。 FIG. 2 is a schematic diagram of measurement results obtained by measuring the entire surface of the touch panel.
圖3是將圖2的量測結果轉換成彩色圖像的示意圖。 FIG. 3 is a schematic diagram of converting the measurement result of FIG. 2 into a color image.
圖4是本發明的一實施例的一種電容量測系統的示意圖。 4 is a schematic diagram of a capacitance measuring system according to an embodiment of the present invention.
請參考圖1，在本實施例中，電容量測系統100包括一三維移動設備110、一觸控頭120及一控制主機130。觸控頭120連接至三維移動設備110。控制主機130電性連接至三維移動設備 110及一觸控面板50。三維移動設備110可定位待測的觸控面板50。控制主機130藉由控制三維移動設備110來移動觸控頭120，以依照觸控面板50的整面上以矩陣方式排列之多個量測點的位置來觸碰觸控面板50，並讀取觸控面板50的各量測點被觸控頭120觸碰時的量測電容值。這些量測點的位置及對應的量測電容值如圖2所示。 Referring to FIG. 1 , in the embodiment, the capacitance measuring system 100 includes a three-dimensional mobile device 110 , a touch head 120 , and a control host 130 . The touch head 120 is connected to the three-dimensional mobile device 110. The control host 130 is electrically connected to the three-dimensional mobile device 110 and a touch panel 50. The three-dimensional mobile device 110 can position the touch panel 50 to be tested. The control host 130 moves the touch head 120 by controlling the three-dimensional mobile device 110 to touch the touch panel 50 according to the positions of the plurality of measurement points arranged in a matrix on the entire surface of the touch panel 50, and reads The measurement points of the touch panel 50 are measured by the touch head 120 when they are touched. The position of these measuring points and the corresponding measured capacitance values are shown in Fig. 2.
請參考圖1至圖3，控制主機130可依照這些量測點的這些量測電容值(如圖2)產生一彩色圖像200(如圖3)，以表現觸控面板50整面的量測電容值的分佈。因此，使用者可藉由彩色圖像200在視覺上判斷所量測的觸控面板50的品質是否符合要求。使用者可依照彩色圖像200的顏色來判斷觸控面板50的所有量測點的電容值是否在預設範圍內，亦可依照彩色圖像200的顏色變化來判斷觸控面板50的某個區域內的電容值落差是否過大。 Referring to FIG. 1 to FIG. 3 , the control host 130 can generate a color image 200 ( FIG. 3 ) according to the measured capacitance values of the measurement points ( FIG. 2 ) to represent the entire surface of the touch panel 50 . Measure the distribution of capacitance values. Therefore, the user can visually judge whether the measured quality of the touch panel 50 meets the requirements by the color image 200. The user can determine whether the capacitance value of all the measurement points of the touch panel 50 is within a preset range according to the color of the color image 200, and can also determine one of the touch panel 50 according to the color change of the color image 200. Is the capacitance value drop in the area too large?
請再參考圖1至圖3，在本實施例中，彩色圖像200由多個色塊201所構成，這些色塊201分別對應這些量測點的位置排列在彩色圖像200上，且控制主機130依照各量測點的量測電容值(如圖2)決定對應的色塊201(如圖3)所呈現的顏色。 Referring to FIG. 1 to FIG. 3 again, in the embodiment, the color image 200 is composed of a plurality of color blocks 201, and the color blocks 201 are respectively arranged on the color image 200 corresponding to the positions of the measurement points, and are controlled. The host 130 determines the color represented by the corresponding color patch 201 (as shown in FIG. 3) according to the measured capacitance value of each measurement point (as shown in FIG. 2).
請再參考圖1至圖3，在本實施例中，控制主機130更可儲存一查找表(或一對照表)，查找表包括連續的多個電容值區間，而這些電容值區間分別對應多個不同的顏色，且控制主機130將各量測點的量測電容值比對查找表以獲得各量測點所對應的色塊201所呈現的顏色。在本實施例中，可依照這些電容值區間的 大小沿著一色環或一色階選用這些顏色。因此，使用者可藉由色環的顏色分佈或色階的明暗分佈來判斷觸控面板50整面的量測電容值的分佈。 Referring to FIG. 1 to FIG. 3 again, in the embodiment, the control host 130 can further store a lookup table (or a comparison table), and the lookup table includes a plurality of consecutive capacitance value intervals, and the capacitance value intervals respectively correspond to A different color, and the control host 130 compares the measured capacitance values of the respective measuring points to the lookup table to obtain the color represented by the color patches 201 corresponding to the respective measuring points. In this embodiment, according to the interval of these capacitance values The size is chosen along a color ring or a color gradation. Therefore, the user can determine the distribution of the measured capacitance values of the entire surface of the touch panel 50 by the color distribution of the color circle or the light and dark distribution of the color gradation.
請參考圖1至圖4，配合圖1的電容量測系統100來說明本實施例的電容量測方法。首先，如步驟S102所示，藉由控制主機130控制三維移動設備110以移動觸控頭120，以依照一觸控面板50的整面上以矩陣方式排列之多個量測點的位置來觸碰觸控面板50，並讀取觸控面板50的各量測點被觸控頭120觸碰時的量測電容值。接著，如步驟S104所示，藉由控制主機130依照這些量測點的這些量測電容值(如圖2)產生一彩色圖像200(如圖3)，以表現觸控面板50整面的量測電容值的分佈。 Referring to FIG. 1 to FIG. 4, the capacitance measuring method of the present embodiment will be described with reference to the capacitance measuring system 100 of FIG. First, as shown in step S102, the control host 130 controls the three-dimensional mobile device 110 to move the touch head 120 to touch the positions of the plurality of measurement points arranged in a matrix on the entire surface of the touch panel 50. The touch panel 50 is touched, and the measured capacitance value when the measuring points of the touch panel 50 are touched by the touch head 120 is read. Then, as shown in step S104, the control host 130 generates a color image 200 (as shown in FIG. 2) according to the measured capacitance values of the measurement points (FIG. 2) to represent the entire surface of the touch panel 50. Measure the distribution of capacitance values.
請參考圖1至圖4，在產生彩色圖像200的步驟S104中，彩色圖像200由多個色塊201所構成，控制主機130依照這些色塊201分別對應這些量測點的位置排列在彩色圖像200上，且控制主機130依照各量測點的量測電容值(如圖2)決定對應的色塊201(如圖3)所呈現的顏色。此外，在產生彩色圖像200的步驟中，控制主機130更可儲存一查找表(或一對照表)，查找表包括連續的多個電容值區間，而這些電容值區間分別對應多個不同的顏色，且控制主機130將各量測點的量測電容值比對查找表以獲得各量測點所對應的色塊201所呈現的顏色。在本實施例中，可依照這些電容值區間的大小沿著一色環或一色階選用這些顏色。 Referring to FIG. 1 to FIG. 4, in step S104 of generating a color image 200, the color image 200 is composed of a plurality of color blocks 201, and the control host 130 is arranged according to the positions of the color points 201 corresponding to the measurement points. On the color image 200, the control host 130 determines the color represented by the corresponding color patch 201 (as shown in FIG. 3) according to the measured capacitance value of each measurement point (as shown in FIG. 2). In addition, in the step of generating the color image 200, the control host 130 may further store a lookup table (or a comparison table), the lookup table includes a plurality of consecutive capacitance value intervals, and the capacitance value intervals respectively correspond to a plurality of different Color, and the control host 130 compares the measured capacitance values of the respective measuring points to the lookup table to obtain the color represented by the color patches 201 corresponding to the respective measuring points. In this embodiment, these colors may be selected along a color ring or a color gradation according to the size of these capacitance value intervals.
對整批的觸控面板進行抽檢時，可以選出幾片觸控面板 進行全面性的電容值量測，以判斷是否所有量測點的量測電容值均落在預設範圍內。若從彩色圖像上可以觀察到局部的量測電容值的變異性過大，則可進一步釐清是否是生產條件或其他因素所導致，以避免繼續生產不良品。 When sampling the entire batch of touch panels, you can select several touch panels. Perform a comprehensive capacitance measurement to determine whether the measured capacitance values of all measurement points fall within the preset range. If it can be observed from the color image that the variability of the local measurement capacitance value is too large, it can further clarify whether it is caused by production conditions or other factors to avoid continuing to produce defective products.
綜上所述，在本發明中，量測觸控面板整面的電容值，並依照所量測的電容值來產生一彩色圖像，以表現觸控面板整面的電容值的分佈。因此，使用者可依照彩色圖像的顏色來判斷觸控面板的所有量測點的電容值是否在預設範圍內，亦可依照彩色圖像的顏色變化來判斷觸控面板的某個區域內的電容值落差是否過大。 In summary, in the present invention, the capacitance value of the entire surface of the touch panel is measured, and a color image is generated according to the measured capacitance value to represent the distribution of the capacitance value of the entire surface of the touch panel. Therefore, the user can determine whether the capacitance value of all the measurement points of the touch panel is within a preset range according to the color of the color image, and can also determine a certain area of the touch panel according to the color change of the color image. Is the capacitance value drop too large?
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，在不脫離本發明的精神和範圍內，當可作些許的更動與潤飾，故本發明的保護範圍當視後附的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 present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.
50‧‧‧觸控面板 50‧‧‧ touch panel
100‧‧‧電容量測系統 100‧‧‧Capacity Measurement System
110‧‧‧三維移動設備 110‧‧‧3D mobile devices
120‧‧‧觸控頭 120‧‧‧Touch head
130‧‧‧控制主機 130‧‧‧Control host
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| TW104105015A TWI524075B (en) | 2015-02-13 | 2015-02-13 | Capacitance measurement system and capacitance measurement method |
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| CN108508279A (en) * | 2018-06-20 | 2018-09-07 | 西安交通大学 | A kind of capacitance chromatographic detection device for the insulation of dielectric function gradient |
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| CN108508279A (en) * | 2018-06-20 | 2018-09-07 | 西安交通大学 | A kind of capacitance chromatographic detection device for the insulation of dielectric function gradient |
| CN108508279B (en) * | 2018-06-20 | 2019-08-23 | 西安交通大学 | A kind of capacitance chromatographic detection device for the insulation of dielectric function gradient |
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