M368849 五、新型說明： 【新型所屬之技術領域】 本新型係關於一種觸碰感測器，特別是關於一種具有 少配線之多點電容式觸碰感測器。 【先前技術】 近年來，觸控螢幕因觸控手機的採用而獲得了市場的 認同，進而，有眾多的廠商加入觸控螢幕的開發與設計行 列。其中，電容式觸碰感測器，由於其耐受性佳且具有較 佳的觸控感受，而成為可取代目前主流的電阻式觸控螢幕 的下一代產品。不過，由於電容式觸碰感測器的成本較高， 成為其尚未大量運用於消費性產品的主要原因。 請參考第1圖，其為習知的投射電容式觸碰感測器 (Projective Capacitance Touch Sensor, PCT Sensor)之電 極層架構圖。其運用了兩層電極層來製作電極，以方便進 行電路的掃描動作。其主要包含一基板（未圖示），例如，採 用玻璃基板，一配置於該玻璃板上之覆蓋層（未圖示）；於玻 璃板的上層表面配置一丫轴電極層2〇，γ轴電極層2〇係 以固定間隔設置多個Y軸電極（y1，y2,y3|y4 )。在玻璃板 的下層表面則配置-X轴電極層1Q，其以與γ軸電極正交 並以固定間隔設置多個X轴電極（χ1，χ2|Χ3 χ4 )。於是， 當手指觸碰或靠近覆蓋層時，在其觸碰位置的父轴電極及 M368849 γ軸電極的電容發生變化，經由偵測電路的偵測，即可檢 測出X轴座標資料及Υ轴座標資料。 運用此種雙層電容式觸碰感測器，需要在該玻璃板的 上，下表面分別鋪設X軸電極及Υ轴電極，一般為採用銦 錫氧化物（ΙΤΟ)來製作為透明電極。因此，其生産成本較高。 於是，為解决雙層電容式觸碰感測器的不足之處，單層電 容式觸碰感測器應運而生。 如「第2圖」所示，其為習知之單層電容式觸控感測 器的簡示圖，其與雙層電容式觸碰感測器不同之處在於， 單層電容式觸碰感測器只在玻璃板的單一表面上鋪設一電 極層。電極層是在玻璃板的γ轴以固定間隔設置多個三角 形電極τ’每兩個三角形電極Τ呈對稱而使得每對三角形 電極形成細長型且平行於X軸，多個平行之三角型電極對 堆疊後，即可形成Υ軸排列之電極對。 此種架構’可藉由三角形在形狀的遞增以及遞減的交 錯狀況下，可偵測到X轴的不同電容值的變化，透過内差 法來計算觸碰點S之X軸的觸碰座標。在γ軸，則可藉由 不同支的三角形電極來獲得觸碰點S之Υ轴之觸碰座標。 單層電容式觸碰感測器'能使生產成本降低。不過，習 知技術在Υ軸能達到多點的觸碰偵測，但在X軸僅能達到 單點的觸碰偵測。因此’若能實現單層電容式觸碰感測器， M368849 且能達到在X轴與Y軸皆能感測多點者，將可實現低成本 的多點電容式觸碰偵測感測器。 【新型内容】 鑑於以上習知問題’本新型專利提出一種多點電容式 觸碰感測器’運用單層電極層來製作電容式觸碰感測器， 藉由多個電極串來獲得多點的觸碰效果。 本新型專利提供一種多點電容式觸碰感測器，包含： 一基板，第一電極串，形成於該基板上，包含複數個彼此 絕緣之第電極，第二電極串，形成於該基板上包含複 數個彼此絕緣之第二電極’該些第二電極具有兩端，其一 端交錯排列於該第一電極之間且彼此絕緣；第三電極串， 形成於該基板上，包含複數個彼此絕緣之第三電極，該些 第三電極交錯排列於該些第二電極之另—端之間且彼此絕 緣；及複數條導線，分別連接至該第一電極串，該第二電 極串之該端之端點與該第三電極串。 本新型專利更提供一種多點電容式觸碰感測器，包 含.一基板；第一電極串，形成於該基板上，包含複數個 彼此絕緣之第—電極；第二電極串，形成㈣基板上，包 含複數個彼此絕緣之第二電極，該些第二電極具有兩端， 其一端交錯排列於該第一電極之間且彼此絕緣；第三電極 串，形成於該基板上，包含複數個彼此絕緣之第三電極， M368849 該些第三電極具有兩端，其一端交錯排列於該些第二電極 之另一端之間且彼此絕緣；第四電極串，形成於該基板上， 包含複數個彼此絕緣之第四電極，該些第四電極交錯排列 於該些第二電極之另一端之間且彼此絕緣；及複數條導 線，分別連接至該第一電極串，該第二電極串之該端之端 ， 點、該第三電極串之該另一端之端點與該第四電極牟。 * 有關本新型專利之較佳實施例與技術内容，兹配合圖 • 示說明如下。 【實施方式】 單層電容式觸碰感測器，如習知技術所揭露者，由於γ 轴具有多條電極對，因此可達到多點的觸碰偵測；而在x 轴則只有一串電極’因此’ X軸並無法實現多點的觸碰债 測。 本新型透過增加多串彼此交錯排列之電極，來達到可 • 於單層式之電容觸碰偵測感測器上實現X轴之多點偵測目 的。 - 請參閱「第3圖」’本新型專利之第一具體實施例，其 - 為採用三個電極串的實施例。第一電極串22與第二電極串 24、第三電極串26彼此間均為絕緣，且第一電極_ 22與 第二電極串24的一端彼此交錯排列且絕緣，其以間隙 30a、30b彼此隔開，第一電極_ 24的另一端則與第=電 6 M368849 極争26彼此交錯排列且絕緣，其以間隙3〇c 3〇d彼此隔 開。導線32的部份，則由第一電極串22的左側連接，並 由第二電極串24的一端，t β 瑪亦即，左側連接，第三電極串 26的右側則連接導線32 〇在眚& l ^ ^ ^ , 任貫作上，導線32亦可連接至 第二電極_ 24的另-端’亦Βρ，以右侧連接。如此即實 現了單層導電層的電極配置。 如此的電極配置’可讓第3圖中的觸碰位置S1與觸碰 位置S2同時被偵測到’亦即，實現了 χ轴的兩點偵測。 請參閱「第4圖」’本新型專利之第三具體實施例其 為採用四個電極串的實施例。第一電極串42與第二電極串 44、第三電極串46、第四電極串48彼此間均為絕緣，且 第一電極串42與第二電極串44的一端彼此交錯排列且絕 緣，其以間隙50a、50b彼此隔開；第二電極串44的另一 端則與第二電極串46的一端彼此交錯排列且絕緣，其以間 隙50c、50d彼此隔開；第三電極串46的另一端則與第四 電極串48彼此交錯排列且絕緣，其以間隙5〇e、50f彼此 隔開。導線52的部份’則連接了第一電極串42的左側， 以及連接了第二電極串44的一端，亦即左側；導線52也 連接了第三電極串46的右侧，與第四電極串48的右側。 如此，即實現了單層導電層的電極配置。 如此的電極配置’可讓第4圖中的觸碰位置S1、觸碰 7 M368849 位置S2、觸碰位置S3同時被偵測到，亦即，實現了 χ轴 的三點偵測。 除了第3圖的三角形電極外，亦可採用波浪形電極來 製作。請參考第5圖，其為第4圖的實施例採用波浪形電 極來製作的範例。第一電極串62與第二電極串64、第三 電極串66、第四電極串68彼此間均為絕緣，且第一電極 串62與第二電極串64的一端彼此交錯排列且絕緣，其以 間隙70a、70b彼此隔開；第二電極串64的另一端則與第 三電極串66的一端彼此交錯排列且絕緣，其以間隙7〇c、 7〇d彼此隔開；第三電極串66的另一端則與第四電極串68 彼此交錯排列且絕緣，其以間隙70e、70f彼此隔開。導線 72的部份，則連接了第一電極串62的左側，以及連接了 第二電極串64的一端，亦即左側；導線72也連接了第三 電極串66的右側’與第四電極串68的右側。如此，即實 現了單層導電層的電極配置。 如此的電極配置，可讓第4圖中的觸碰位置31、觸碰 位置S2觸碰位置S3同時被彳貞測到，亦即，實現了 χ轴 的三點偵測。 第5圖的實施例中的波浪形電極，亦可運用於第3圖 的實施例亦即，二串電極串。此外’其他的電極开多狀， 例如梳齒型或者其他運用多個電極串的方式來達到單層電M368849 V. New description: [New technical field] The present invention relates to a touch sensor, and more particularly to a multi-point capacitive touch sensor with less wiring. [Prior Art] In recent years, touch screens have gained market recognition due to the adoption of touch phones. In turn, many manufacturers have joined the development and design of touch screens. Among them, the capacitive touch sensor has become a next-generation product that can replace the current mainstream resistive touch screen due to its good tolerance and good touch experience. However, due to the high cost of capacitive touch sensors, it has become the main reason why it has not been widely used in consumer products. Please refer to FIG. 1 , which is an electrical layer architecture diagram of a conventional Projective Capacitance Touch Sensor (PCT Sensor). It uses two layers of electrodes to make electrodes to facilitate the scanning of the circuit. It mainly comprises a substrate (not shown), for example, a glass substrate, a cover layer (not shown) disposed on the glass plate, and a 丫-axis electrode layer 2〇, γ-axis disposed on the upper surface of the glass plate The electrode layer 2 is provided with a plurality of Y-axis electrodes (y1, y2, y3|y4) at regular intervals. On the lower surface of the glass plate, an -X-axis electrode layer 1Q is disposed which is disposed at a fixed interval from the γ-axis electrode and is provided with a plurality of X-axis electrodes (χ1, χ2|Χ3 χ4). Therefore, when the finger touches or approaches the cover layer, the capacitance of the parent axis electrode and the M368849 γ-axis electrode at the touch position changes, and the X-axis coordinate data and the x-axis can be detected through the detection of the detection circuit. Coordinate information. In this double-layer capacitive touch sensor, it is necessary to lay an X-axis electrode and a x-axis electrode on the upper and lower surfaces of the glass plate, and generally use indium tin oxide (ΙΤΟ) to make a transparent electrode. Therefore, its production cost is high. Therefore, in order to solve the shortcomings of the double-layer capacitive touch sensor, a single-layer capacitive touch sensor came into being. As shown in Figure 2, it is a simplified diagram of a conventional single-layer capacitive touch sensor, which differs from a double-layer capacitive touch sensor in that it has a single-layer capacitive touch. The detector only lays an electrode layer on a single surface of the glass sheet. The electrode layer is provided with a plurality of triangular electrodes τ' at a fixed interval on the γ axis of the glass plate, and each of the two triangular electrodes is symmetrical such that each pair of triangular electrodes is elongated and parallel to the X axis, and a plurality of parallel triangular electrode pairs After stacking, the electrode pairs arranged in the x-axis can be formed. This kind of architecture can detect the change of the different capacitance values of the X-axis by the increment and decreasing error of the triangle, and calculate the touch coordinates of the X-axis of the touch point S by the internal difference method. In the γ-axis, the touch coordinates of the x-axis of the touch point S can be obtained by different triangular electrodes. The single-layer capacitive touch sensor 'can reduce production costs. However, the conventional technique can achieve multi-touch detection on the x-axis, but only a single point of touch detection can be achieved on the X-axis. Therefore, if a single-layer capacitive touch sensor can be realized, the M368849 can achieve multiple points in both the X-axis and the Y-axis, and a low-cost multi-point capacitive touch detection sensor can be realized. . [New content] In view of the above conventional problems, the present invention proposes a multi-point capacitive touch sensor that uses a single-layer electrode layer to fabricate a capacitive touch sensor, and obtains multiple points by using multiple electrode strings. Touch effect. The present invention provides a multi-point capacitive touch sensor comprising: a substrate, a first electrode string formed on the substrate, comprising a plurality of first electrodes insulated from each other, and a second electrode string formed on the substrate a second electrode comprising a plurality of insulating electrodes insulated from each other, wherein the second electrodes have two ends, one end of which is staggered between the first electrodes and insulated from each other; and a third electrode string formed on the substrate, comprising a plurality of insulating layers a third electrode, the third electrodes are staggered between the other ends of the second electrodes and insulated from each other; and a plurality of wires are respectively connected to the first electrode string, the end of the second electrode string The end point is the string of the third electrode. The present invention further provides a multi-point capacitive touch sensor comprising: a substrate; a first electrode string formed on the substrate, comprising a plurality of first electrodes insulated from each other; and a second electrode string forming a (four) substrate The second electrode includes two ends, and the second electrodes have two ends, one end of which is staggered between the first electrodes and insulated from each other; and a third electrode string formed on the substrate, including a plurality of a third electrode insulated from each other, M368849, the third electrodes have two ends, one end of which is staggered between the other ends of the second electrodes and insulated from each other; the fourth electrode string is formed on the substrate, and includes a plurality of a fourth electrode insulated from each other, the fourth electrodes are staggered between the other ends of the second electrodes and insulated from each other; and a plurality of wires are respectively connected to the first electrode string, and the second electrode string The end of the end, the point, the end of the other end of the third electrode string and the fourth electrode 牟. * The preferred embodiment and technical contents of the novel patent are described below with reference to the drawings. [Embodiment] A single-layer capacitive touch sensor, as disclosed in the prior art, can achieve multi-point touch detection because the γ-axis has multiple electrode pairs, and only one string on the x-axis. The electrode 'so' of the X-axis does not allow for multi-point touch testing. The present invention achieves multi-point detection of X-axis on a single-layer capacitive touch detection sensor by adding a plurality of strings of staggered electrodes. - Please refer to "Fig. 3". A first embodiment of the novel patent is an embodiment employing three electrode strings. The first electrode string 22 and the second electrode string 24 and the third electrode string 26 are insulated from each other, and one ends of the first electrode 22 and the second electrode string 24 are staggered and insulated from each other, and are separated from each other by the gaps 30a, 30b. Separated, the other end of the first electrode _ 24 is staggered and insulated from each other by the sixth electric power, which is separated from each other by a gap 3 〇 c 3 〇 d. The portion of the wire 32 is connected by the left side of the first electrode string 22, and is connected to the left side by the end of the second electrode string 24, that is, the left side is connected, and the right side of the third electrode string 26 is connected to the wire 32. & l ^ ^ ^ , In any case, the wire 32 can also be connected to the other end of the second electrode _ 24 ' Β ρ, connected to the right side. Thus, the electrode configuration of the single-layer conductive layer is achieved. Such an electrode arrangement ' allows the touch position S1 and the touch position S2 in Fig. 3 to be detected simultaneously', that is, the two-point detection of the x-axis is realized. Please refer to "Fig. 4". A third embodiment of the novel is an embodiment employing four electrode strings. The first electrode string 42 and the second electrode string 44, the third electrode string 46, and the fourth electrode string 48 are insulated from each other, and one ends of the first electrode string 42 and the second electrode string 44 are staggered and insulated from each other. The gaps are separated from each other by the gaps 50a, 50b; the other end of the second electrode string 44 and the one end of the second electrode string 46 are staggered and insulated from each other, which are separated from each other by the gaps 50c, 50d; the other end of the third electrode string 46 Then, the fourth electrode strings 48 are staggered and insulated from each other, and are separated from each other by the gaps 5〇e, 50f. The portion of the wire 52 is connected to the left side of the first electrode string 42, and the one end to which the second electrode string 44 is connected, that is, the left side; the wire 52 is also connected to the right side of the third electrode string 46, and the fourth electrode The right side of string 48. Thus, the electrode configuration of the single-layer conductive layer is achieved. Such an electrode arrangement allows the touch position S1, the touch 7 M368849 position S2, and the touch position S3 in Fig. 4 to be simultaneously detected, that is, the three-point detection of the x-axis is realized. In addition to the triangular electrode of Fig. 3, a wave electrode can also be used. Please refer to Fig. 5, which is an example in which the embodiment of Fig. 4 is fabricated using a wave electrode. The first electrode string 62 and the second electrode string 64, the third electrode string 66, and the fourth electrode string 68 are insulated from each other, and one ends of the first electrode string 62 and the second electrode string 64 are staggered and insulated from each other. The gaps are separated from each other by the gaps 70a, 70b; the other end of the second electrode string 64 is staggered and insulated from one end of the third electrode string 66, which are separated from each other by the gaps 7〇c, 7〇d; the third electrode string The other end of 66 and the fourth electrode string 68 are staggered and insulated from each other, and are separated from each other by gaps 70e, 70f. A portion of the wire 72 is connected to the left side of the first electrode string 62, and one end to which the second electrode string 64 is connected, that is, the left side; the wire 72 is also connected to the right side and the fourth electrode string of the third electrode string 66. 68 on the right side. Thus, the electrode configuration of the single-layer conductive layer is achieved. Such an electrode configuration allows the touch position 31 and the touch position S2 of the touch position S3 in Fig. 4 to be simultaneously detected, that is, the three-point detection of the x-axis is realized. The wave-shaped electrode in the embodiment of Fig. 5 can also be applied to the embodiment of Fig. 3, that is, the two-string electrode string. In addition, other electrodes are open, such as comb-tooth type or other methods using multiple electrode strings to achieve single-layer electricity.
SS
32 M368849 谷式觸碰感測者，亦可採用之。 雖然本新型專利已以前述較佳實施例揭示，然其並非 用以限定本新型專利，任何熟習此技藝者，在*脫離本新 型專利之精神和範圍内，當可作各種之更動與修改。如上 述的解釋，都可以作各型式的修正與變化，而不會破壞此 創作的精神。因此本新型專利之㈣範圍當視後附之申請 專利範圍所界定者為準。 【圖式簡單說明】 第1圖’為雙層電容式觸碰感測器的簡示圖； 第2圖’為單層電容式觸碰感測器的簡示圖； 第3圖，為本新型專利之第一具體實施例； 第4圖’為本新型專利之第二具體實施例；及 第5圖，為本新型專利之第三具體實施例。 【主要元件符號說明】 10 X轴電極層 2〇 Y轴電極層 22 第一電極串 24 第二電極串 26 電三電極串 30a、30b、30c、30d 間隙 導線 9 M368849 42 第一電極串 44 第二電極串 46 電三電極串 48 第四電極串 50a、 50b ' 50c、50d、50e、50f 間隙 52 導線 62 第一電極串 _ 64 第二電極串 66 電三電極串 68 第四電極串 70a、 ‘ 70b、70c、70d、70e、70f 間隙 72 導線 T 三角形電極 χ1，χ2，χ3，χ4 X 轴電極 y1 ,y2,y3,y4 Y 軸電極 Y〇〇~Y〇7 Y軸導線32 M368849 Valley touch sensor can also be used. Although the present invention has been disclosed in the foregoing preferred embodiments, it is not intended to limit the present invention, and it is to be understood that those skilled in the art can make various changes and modifications within the spirit and scope of the present invention. As explained above, all types of corrections and changes can be made without destroying the spirit of this creation. Therefore, the scope of (4) of this new patent is subject to the definition of the scope of the patent application attached. [Simple diagram of the diagram] Figure 1 is a simplified diagram of a double-layer capacitive touch sensor; Figure 2 is a simplified diagram of a single-layer capacitive touch sensor; Figure 3 A first specific embodiment of the novel patent; FIG. 4 is a second embodiment of the novel; and FIG. 5 is a third embodiment of the novel. [Description of main component symbols] 10 X-axis electrode layer 2 〇 Y-axis electrode layer 22 First electrode string 24 Second electrode string 26 Electric three-electrode string 30a, 30b, 30c, 30d Clearance wire 9 M368849 42 First electrode string 44 Two electrode string 46 electric three electrode string 48 fourth electrode string 50a, 50b ' 50c, 50d, 50e, 50f gap 52 wire 62 first electrode string _ 64 second electrode string 66 electric three electrode string 68 fourth electrode string 70a, '70b, 70c, 70d, 70e, 70f gap 72 wire T triangular electrode χ1, χ2, χ3, χ4 X-axis electrode y1, y2, y3, y4 Y-axis electrode Y〇〇~Y〇7 Y-axis wire
Yl〇~Yl7 Y轴導線 S、S1、S2、S3 觸碰位置 ι〇Yl〇~Yl7 Y-axis wire S, S1, S2, S3 Touch position ι〇