TWI567626B - Resistive touch panel - Google Patents
Resistive touch panel Download PDFInfo
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- TWI567626B TWI567626B TW103136306A TW103136306A TWI567626B TW I567626 B TWI567626 B TW I567626B TW 103136306 A TW103136306 A TW 103136306A TW 103136306 A TW103136306 A TW 103136306A TW I567626 B TWI567626 B TW I567626B
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Description
本發明系有關於觸控領域，尤其是一種具有新穎設計六線電阻式觸控面板，可同時偵測兩個不同位置的觸控點。 The invention relates to the field of touch, in particular to a touch panel with a novel design six-wire resistive touch panel, which can simultaneously detect two different positions.
習知的五線電阻式觸控面板，其結構示意圖如第1圖所示，包含有一下基板10以及一上基板20，其中下基板10為方型，包含有四個角落，且四個角落分別包含有一電壓輸入端12，而上基板20則包含有一電壓輸出端22，而下基板10的周圍都分別包含有金屬導線14，上基板20的周圍都包含有金屬導線24。且上基板20與下基板10之間，具有複數個隔離結構(圖未示)，將上基板20與下基板10之間維持一定距離，以防兩者相互導通。當使用者按壓上基板20時，會使得上、下基板之間相互接觸，而產生一電流路徑，由下基板的電壓輸入端開始傳遞至上基板的電壓輸出端。只要給予下基板10的電壓輸入端20適當大小的電壓，即可在下基板10產生均勻且線性分佈的電壓，再藉由上基板20的電壓輸出端22所偵測的電壓耗損比例，推算出觸控點的位置。 A schematic diagram of a conventional five-wire resistive touch panel, as shown in FIG. 1, includes a lower substrate 10 and an upper substrate 20, wherein the lower substrate 10 is square and includes four corners and four corners. Each of the upper substrate 20 includes a voltage output terminal 22, and the periphery of the lower substrate 10 includes metal wires 14 respectively. The upper substrate 20 includes metal wires 24 around the substrate. A plurality of isolation structures (not shown) are disposed between the upper substrate 20 and the lower substrate 10 to maintain a certain distance between the upper substrate 20 and the lower substrate 10 to prevent the two from conducting each other. When the user presses the upper substrate 20, the upper and lower substrates are brought into contact with each other to generate a current path, which is transmitted from the voltage input end of the lower substrate to the voltage output end of the upper substrate. As long as a voltage of a proper size is applied to the voltage input terminal 20 of the lower substrate 10, a uniform and linearly distributed voltage is generated on the lower substrate 10, and the voltage loss ratio detected by the voltage output terminal 22 of the upper substrate 20 is used to derive the touch. The location of the handle.
然而，習知的五線電阻式觸控面板，僅具有單點觸控的功能，當有兩個觸控點同時產生時，最終所計算得到的觸控點位置，將會位於兩個觸控點的中心位置。 However, the conventional five-wire resistive touch panel has only a single touch function. When two touch points are simultaneously generated, the final calculated touch point position will be located at two touches. The center of the point.
因此，本發明提供一種六線電阻式觸控面板，比起習知的五線電阻式觸控面板，可以達到同時偵測兩個觸控點的功效，因此具有更靈活的應 用性。 Therefore, the present invention provides a six-wire resistive touch panel, which can achieve the effect of simultaneously detecting two touch points compared to the conventional five-wire resistive touch panel, and thus has a more flexible response. Use sex.
本發明提供的電阻式觸控面板包含一下基板，具有四個角落，其中每一角落分別具有一電壓輸入端，該下基板共有四個電壓輸入端，以及一上基板，該上基板包含有兩個電壓輸出端，其中，該上基板由非等向性導電物質所構成。 The resistive touch panel provided by the present invention comprises a lower substrate having four corners, wherein each corner has a voltage input end, the lower substrate has four voltage input ends, and an upper substrate, the upper substrate includes two And a voltage output terminal, wherein the upper substrate is composed of an anisotropic conductive material.
本發明特徵在於，上基板由非等向性導電物質所構成，因此僅有單一方向具有良好的導電性，而與之垂直的另外一方向，則不導通或是電阻極大。如此一來，搭配上基板周邊呈現間隔排列的金屬線路，即可構成許多S型的導通路徑，當上基板上同時產生兩個觸控點時，兩個觸控點之間不會互相干擾，而觸控面板可分別精確計算兩個觸控點的確切位置。 The present invention is characterized in that the upper substrate is composed of an anisotropic conductive material, so that only one direction has good conductivity, and the other direction perpendicular thereto is not conductive or extremely large. In this way, a plurality of S-type conduction paths can be formed by the metal lines arranged at intervals around the upper substrate. When two touch points are simultaneously generated on the upper substrate, the two touch points do not interfere with each other. The touch panel can accurately calculate the exact position of the two touch points.
10‧‧‧下基板 10‧‧‧lower substrate
12‧‧‧電壓輸入端 12‧‧‧Voltage input
14‧‧‧金屬導線 14‧‧‧Metal wire
20‧‧‧上基板 20‧‧‧Upper substrate
22‧‧‧電壓輸出端 22‧‧‧Voltage output
24‧‧‧金屬導線 24‧‧‧Metal wire
30‧‧‧下基板 30‧‧‧lower substrate
32A~32D‧‧‧電壓輸入端 32A~32D‧‧‧ voltage input
34‧‧‧金屬導線 34‧‧‧Metal wire
40‧‧‧上基板 40‧‧‧Upper substrate
42A~42B‧‧‧電壓輸出端 42A~42B‧‧‧voltage output
44‧‧‧金屬導線 44‧‧‧Metal wire
第1圖 繪示習知五線電阻式觸控面板的結構示意圖。 FIG. 1 is a schematic view showing the structure of a conventional five-wire resistive touch panel.
第2圖繪示本發明的六線電阻式觸控面板之結構示意圖。 FIG. 2 is a schematic structural view of a six-wire resistive touch panel of the present invention.
第3圖繪示本發明的六線電阻式觸控面板產生觸控點時的電流傳遞示意圖。 FIG. 3 is a schematic diagram showing current transfer when a six-wire resistive touch panel of the present invention generates a touch point.
為使熟習本發明所屬技術領域之一般技藝者能更進一步了解本發明，下文特列舉本發明之較佳實施例，並配合所附圖式，詳細說明本發明的構成內容及所欲達成之功效。 The present invention will be further understood by those of ordinary skill in the art to which the present invention pertains. .
為了方便說明，本發明之各圖式僅為示意以更容易了解本發明，其詳細的比例可依照設計的需求進行調整。在文中所描述對於圖形中相對元件之上下關係，在本領域之人皆應能理解其係指物件之相對位置而言，因此皆可以翻轉而呈現相同之構件，此皆應同屬本說明書所揭露之範圍，在此容先敘明。 For the convenience of description, the drawings of the present invention are only for the purpose of understanding the present invention, and the detailed proportions thereof can be adjusted according to the design requirements. As described in the text for the relative relationship between the relative elements in the figure, it should be understood by those skilled in the art that it refers to the relative position of the object, and therefore can be flipped to present the same member, which should belong to the same specification. The scope of the disclosure is hereby stated.
第2圖繪示本發明的六線電阻式觸控面板之結構示意圖，請參考第2圖，本發明的六線電阻式觸控面板包括有一下基板30以及一上基板40，其中在一般狀況下，下基板30為方形並包含有四個邊與四個角，位於每個角落各設置有一電壓輸入端，第2圖中分別以32A、32B、32C以及32D標示。另包含有一上基板40，其中上基板40同樣具有四個邊，位於其中兩不相臨的邊各設置有一電壓輸出端，第2圖中以42A以及42B標示，且電壓輸出端42A與42B的另一端，則分別連接一電壓感測器(圖未示)，用以偵測該觸控點至該電壓輸出端的電壓差值，一般來說當電壓輸出端的電壓值為0時，電壓感測器所得到數值趨近於觸控點位置的電壓值。此外，本發明在上基板40與下基板30之間，更設置有複數個的隔離結構(圖未示)，該些隔離結構可能均勻排列或是依照實際需求排列，目的為將上基板40與下基板30電性隔離，使觸控面板在未受到接觸時，上基板40與下基板30處於不互相導通的狀態。 2 is a schematic structural view of a six-wire resistive touch panel of the present invention. Referring to FIG. 2, the six-wire resistive touch panel of the present invention includes a lower substrate 30 and an upper substrate 40, wherein in a general condition The lower substrate 30 is square and includes four sides and four corners, and each of the corners is provided with a voltage input end, which is denoted by 32A, 32B, 32C and 32D, respectively. Further comprising an upper substrate 40, wherein the upper substrate 40 also has four sides, wherein two non-adjacent sides are respectively provided with a voltage output end, which is denoted by 42A and 42B in FIG. 2, and the voltage output ends 42A and 42B At the other end, a voltage sensor (not shown) is connected to detect the voltage difference between the touch point and the voltage output terminal. Generally, when the voltage value of the voltage output terminal is 0, the voltage sensing is performed. The value obtained by the device approaches the voltage value at the position of the touch point. In addition, the present invention is further provided with a plurality of isolation structures (not shown) between the upper substrate 40 and the lower substrate 30. The isolation structures may be evenly arranged or arranged according to actual needs, and the purpose is to connect the upper substrate 40 with The lower substrate 30 is electrically isolated so that the upper substrate 40 and the lower substrate 30 are not in conduction with each other when the touch panel is not exposed.
此外，在下基板30以及上基板40的四邊周圍區域皆設置有複數段金屬導線，複數段金屬導線34設置於下基板30四邊周邊區域，複數段金屬導線44設置於上基板40其中兩相對邊的周圍區域，值得注意的是，金屬導線34與金屬導線44皆為間隔排列，如第2圖所示，下基板30上具有多段金屬導線34，且彼此之間間隔排列並留有一定空隙，如此一來有助於電壓輸入端32A~32D所輸入的電壓可更為均勻地散布在下基板30；同樣地，上基板40上具有多段金屬導線44，且彼此之間間隔排列並留有一定空隙，值得注意的是，本實施例中，如第2圖所示，上基板40的金屬導線44僅位上下兩邊的周圍區域，並沿著X方向間隔排列，但是在其他實施例中，金屬導線44的位置可以調整，例如位於左右兩邊的周邊區域，並沿著Y軸方向排列。此外，金屬導線34、44的材質包括金；銀、銅、鋁等，或其他導電性良好的材質。 In addition, a plurality of metal wires are disposed on the periphery of the four sides of the lower substrate 30 and the upper substrate 40. The plurality of metal wires 34 are disposed on the peripheral regions of the four sides of the lower substrate 30, and the plurality of metal wires 44 are disposed on the opposite sides of the upper substrate 40. In the surrounding area, it is worth noting that the metal wires 34 and the metal wires 44 are arranged at intervals. As shown in FIG. 2, the lower substrate 30 has a plurality of metal wires 34 arranged at intervals and with a certain gap therebetween. The voltage input from the voltage input terminals 32A 32D can be more evenly distributed on the lower substrate 30; likewise, the upper substrate 40 has a plurality of metal wires 44 spaced apart from each other with a certain gap. It should be noted that, in this embodiment, as shown in FIG. 2, the metal wires 44 of the upper substrate 40 are only spaced around the upper and lower sides and are arranged along the X direction, but in other embodiments, the metal wires 44 are provided. The position can be adjusted, for example, the peripheral areas on the left and right sides, and arranged along the Y-axis direction. In addition, the material of the metal wires 34 and 44 includes gold, silver, copper, aluminum, or the like, or other materials having good conductivity.
另外，本發明的下基板30採用導電材質製成，例如為銦錫氧化物薄膜(Indium Tin Oxide,ITO film)等，而上基板40則採用非等向性導電物質所製成，以本實施例來說，以奈米碳管(Carbon Nanotube,CNT)所製成，但本發明不限於此，上基板40的材質還可包括奈米銀線、具有單一方向凹槽平行排列的銦錫氧化物薄膜以及金屬網，更詳細說明，上述所提及本發明的非等向性導電物質，其在不同方向所具有的導電度與電阻值也不相同，舉第2圖為例，經過設定與排列，上基板40沿著Y軸方向的電阻值較低，因此導電度較佳，而沿著X軸方向的電阻值則遠高於沿著Y軸的電阻值，這裡所指的遠高於泛指以相同單位長度計算，X軸方向的電阻值為Y軸方向的100倍以上。因此可視為位於上基板40的電流僅會沿著Y軸方向流動，而X軸方向則趨近於不導通，因而，電流無法沿著上基板40的X軸橫向移動，電流僅可藉由金屬導線44進行橫向移動。值得注意的是，本實施例中，具有較佳導電性的方向(以本實施例中為Y軸)與上基板40的金屬導線44的排列方向(本實施例中上基板40的金屬導線44沿著X軸方向間隔排列)互相垂直。僅須滿足上述條件皆屬於本發明的範疇，因此若將本發明結構進行旋轉也屬於本發明的範圍內。 In addition, the lower substrate 30 of the present invention is made of a conductive material, such as an indium tin oxide film (ITO film), and the upper substrate 40 is made of an anisotropic conductive material. For example, it is made of carbon nanotube (CNT), but the invention is not limited thereto, and the material of the upper substrate 40 may further include nano silver wire, indium tin oxide having parallel arrangement of grooves in a single direction. The film and the metal mesh, in more detail, the above-mentioned anisotropic conductive material of the present invention has different electrical conductivity and resistance value in different directions, and FIG. 2 is an example, and is set and Arranged, the resistance value of the upper substrate 40 along the Y-axis direction is lower, so the conductivity is better, and the resistance value along the X-axis direction is much higher than the resistance value along the Y-axis, which is much higher here. Generally speaking, the resistance value in the X-axis direction is 100 times or more in the Y-axis direction, calculated in the same unit length. Therefore, it can be considered that the current on the upper substrate 40 flows only in the Y-axis direction, and the X-axis direction approaches the non-conduction. Therefore, the current cannot move laterally along the X-axis of the upper substrate 40, and the current can only be made by metal. The wire 44 is moved laterally. It should be noted that, in this embodiment, the direction of the preferred conductivity (in the present embodiment, the Y-axis) and the direction in which the metal wires 44 of the upper substrate 40 are arranged (the metal wires 44 of the upper substrate 40 in this embodiment) Arranged along the X-axis direction) perpendicular to each other. It is within the scope of the invention to satisfy only the above-mentioned conditions, and therefore it is within the scope of the invention to rotate the structure of the invention.
接著說明本發明的六線電阻式觸控面板偵測觸控點的方法：第3圖繪示本發明的六線電阻式觸控面板產生觸控點時的電流傳遞示意圖，以上基板40同時產生兩個觸控點為例。首先，下基板30的電壓輸入端32A~32D可分別輸入相同或不同的電壓值，目的為給予下基板30一均勻且具有線性規則的電壓分佈，舉例來說，當欲測量觸控點X方向的座標時，可以給予電壓輸入端32A、32B一固定電壓，例如為5V，而電壓輸入端32C、32D則保持為0V的電壓，如此一來，如第3圖所示，從第3圖中下基板30的右端到左端將會產生一均勻且呈線性分佈的電壓差，而當按壓上基板40而產生觸控點時，下基板30與上基板40將會導通，而使得觸控點位置的電壓值從上基板 40的電壓輸出端42A或是42B被偵測，經由比例分配計算方式，即可得到觸控點的X方向座標。請注意上述給予電壓輸入端32A~32D的電壓值，並不限於5V或0V，而可以依照實際需求調整。同樣地，當欲測量觸控點Y方向的座標時，可以給予電壓輸入端32A、32C一固定電壓，例如為5V，而電壓輸入端32B、32D則保持為0V的電壓，如此一來，從第3圖中下基板30的下端到上端將會產生一均勻且呈線性分佈的電壓差(圖未示，第3圖僅繪示測量觸控點X方向座標為例)，其觸控點的計算方式與X方向的觸控點計算方式相同，在此不再贅述。 Next, a method for detecting a touch point of the six-wire resistive touch panel of the present invention is described. FIG. 3 is a schematic diagram showing current transfer when a six-wire resistive touch panel of the present invention generates a touch point, and the above substrate 40 is simultaneously generated. Two touch points are an example. First, the voltage input terminals 32A-32D of the lower substrate 30 can respectively input the same or different voltage values, so as to give the lower substrate 30 a uniform and linear regular voltage distribution, for example, when the touch point X direction is to be measured. At the coordinates, a fixed voltage can be applied to the voltage input terminals 32A, 32B, for example, 5V, and the voltage input terminals 32C, 32D are maintained at a voltage of 0V, so as shown in Fig. 3, from Fig. 3 A uniform and linear distribution of voltage difference will be generated from the right end to the left end of the lower substrate 30. When the upper substrate 40 is pressed to generate a touch point, the lower substrate 30 and the upper substrate 40 will be turned on, and the touch point position is made. Voltage value from the upper substrate The voltage output terminal 42A or 42B of 40 is detected, and the X-direction coordinate of the touch point can be obtained through the proportional distribution calculation method. Please note that the voltage values given to the voltage input terminals 32A to 32D are not limited to 5V or 0V, and can be adjusted according to actual needs. Similarly, when the coordinates of the touch point Y direction are to be measured, a fixed voltage can be given to the voltage input terminals 32A, 32C, for example, 5V, and the voltage input terminals 32B, 32D are maintained at a voltage of 0V, thus, from In Fig. 3, a uniform and linear distribution of voltage difference will be generated from the lower end to the upper end of the lower substrate 30 (not shown, the third figure only shows the measurement of the touch point X direction coordinates as an example), and the touch point thereof The calculation method is the same as the calculation method of the touch point in the X direction, and will not be described here.
接下來，當上基板40產生觸控點時，由於本實施例中僅有沿著Y方向具有良好的導電性，而X方向則具有極大電阻因而近乎絕緣，所以電流的傳遞路徑如第3圖所示，沿著非等向性導電物質傳遞至上基板40的上下兩邊，接著藉由金屬導線44，將電流信號進行橫向傳遞，如此一來，電流可依序經由Y軸方向的非等向性導電物質與X軸方向的金屬導線，將可順著S型的路徑傳遞至電壓輸出端42A或是42B，再經由末端的電壓感測器，依照比例方式計算觸控點的座標。 Next, when the upper substrate 40 generates a touch point, since the present embodiment has only good conductivity along the Y direction, and the X direction has a very large resistance and is thus nearly insulated, the current transmission path is as shown in FIG. As shown, the non-isotropic conductive material is transferred to the upper and lower sides of the upper substrate 40, and then the current signal is laterally transmitted by the metal wire 44, so that the current can be sequentially anisotropy in the Y-axis direction. The conductive material and the metal wire in the X-axis direction can be transmitted to the voltage output terminal 42A or 42B along the S-shaped path, and the coordinates of the touch point are calculated in a proportional manner via the voltage sensor at the end.
值得注意的是，由於本實施例中非等向性導電物質設定為Y軸方向具有良好導電性，而X軸方向則具有遠大於Y軸方向的電阻值，因此當上基板40同時產生兩個觸控點時，兩觸控點之間X方向距離具有極大的電阻值，所以電流傳遞的路徑，較佳由整體電阻相對較小的S路徑傳遞，包含順著Y方向的非等向性導電物質，以及X方向的金屬導線44傳遞，兩個觸控點所產生的電流，分別傳輸至不同的兩個電壓輸出端42A與42B，因而分別判斷兩個不同的觸控點位置，如此兩個觸控點之間的相互干擾可以有效降低，進而準確判讀兩個不同位置的觸控點座標。 It is to be noted that since the anisotropic conductive material in the embodiment is set to have good conductivity in the Y-axis direction and the X-axis direction has a resistance value much larger than the Y-axis direction, when the upper substrate 40 simultaneously generates two When the touch point is used, the X-direction distance between the two touch points has a great resistance value, so the path of the current transfer is preferably transmitted by the S path with a relatively small overall resistance, including the anisotropic conduction along the Y direction. The material, and the metal wire 44 in the X direction are transmitted, and the currents generated by the two touch points are respectively transmitted to the different two voltage output terminals 42A and 42B, thereby judging the positions of the two different touch points, respectively. The mutual interference between the touch points can be effectively reduced, thereby accurately interpreting the touch point coordinates of two different positions.
本發明的特徵在於，提供一種新穎設計的六線式電阻觸控面板，比起習知的五線電阻式觸控面板，上基板由非等向性導電物質所構成，因此單一方向具有良好的導電性，而與之垂直的另外一方向，則不導通或是電阻極大。如此一來，搭配上基板周邊呈現間隔排列的金屬線路，即可構成許多S型的導通路徑，當上基板上同時產生兩個觸控點時，兩個觸控點之間不會互相干擾，而觸控面板可分別精確計算兩個觸控點的確切位置。 The invention is characterized in that a six-wire resistive touch panel with a novel design is provided. Compared with the conventional five-wire resistive touch panel, the upper substrate is composed of an anisotropic conductive material, so that the single direction has a good shape. Conductivity, while the other direction perpendicular to it, is not conductive or extremely resistant. In this way, a plurality of S-type conduction paths can be formed by the metal lines arranged at intervals around the upper substrate. When two touch points are simultaneously generated on the upper substrate, the two touch points do not interfere with each other. The touch panel can accurately calculate the exact position of the two touch points.
以上所述僅為本發明之較佳實施例，凡依本發明申請專利範圍所做之均等變化與修飾，皆應屬本發明之涵蓋範圍。 The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.
30‧‧‧下基板 30‧‧‧lower substrate
32A~32D‧‧‧電壓輸入端 32A~32D‧‧‧ voltage input
34‧‧‧金屬導線 34‧‧‧Metal wire
40‧‧‧上基板 40‧‧‧Upper substrate
42A~42B‧‧‧電壓輸出端 42A~42B‧‧‧voltage output
44‧‧‧金屬導線 44‧‧‧Metal wire
Claims (9)
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| CN201410466087.1A CN104182110B (en) | 2014-09-12 | 2014-09-12 | Electric resistance touch-control panel |
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| TW201610804A TW201610804A (en) | 2016-03-16 |
| TWI567626B true TWI567626B (en) | 2017-01-21 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080138589A1 (en) * | 2005-05-26 | 2008-06-12 | Gunze Limited | Transparent Planar Body and Transparent Touch Switch |
| TW201039002A (en) * | 2009-04-30 | 2010-11-01 | Innolux Display Corp | Method of fabricating a capacitive touch panel |
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| CN101266527A (en) * | 2007-03-13 | 2008-09-17 | 介面光电股份有限公司 | Touch control plate possessing multiple input |
| CN101655760A (en) * | 2008-08-21 | 2010-02-24 | 比亚迪股份有限公司 | Screen body of resistance-type touch screen, touch screen controller and method for identifying multiple touch points |
| CN102103450B (en) * | 2009-12-22 | 2013-07-31 | 胜华科技股份有限公司 | Resistance-type touch panel |
| TWI453634B (en) * | 2011-06-09 | 2014-09-21 | Shih Hua Technology Ltd | Method for making touch panel |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080138589A1 (en) * | 2005-05-26 | 2008-06-12 | Gunze Limited | Transparent Planar Body and Transparent Touch Switch |
| TW201039002A (en) * | 2009-04-30 | 2010-11-01 | Innolux Display Corp | Method of fabricating a capacitive touch panel |
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| CN104182110B (en) | 2017-10-24 |
| CN104182110A (en) | 2014-12-03 |
| TW201610804A (en) | 2016-03-16 |
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