M396447 五、新型說明： 【新型所屬之技術領域】 本新型關於觸控領域，特別關於一種偵測多觸摸點之 觸控面板及使用該觸控面板之觸控裝置。 【先前技術】 • 目前，藉由手指等觸控物件之觸摸，直接對電子設備 . 進行操作之技術已普遍應用於日常工作和生活中。該等電 • 子設備一般採用觸控裝置來感應觸摸動作並產生相應電 信號以供後續操作。所述觸控裝置於實際生產或使用中常 表現為觸控板、觸控屏等形式。 按照觸控原理之不同，觸控面板主要分為電阻式、電 容式、光學式、電磁式、聲波式等。其中電容式觸控面板 之工作原理為：由使用者以手指或感應筆等可導電之觸控 物件觸摸面板表面，導致面板被觸摸之位置產生電壓變 I化。處理器根據此電壓變化偵測出被觸摸位置之座標，以 . 達到觸控操作之目的。光學式觸控面板和聲波式觸控面板 之工作原理比較類似，都係藉由發射源產生光波或聲波， 在波傳播之路線上，設置接收裝置。當發生觸摸時，觸控 物件會阻擋波之傳播，則接收裝置接收之信號就會產生異 常，以此來偵測觸摸點位置。 為了配合不同電子設備，業者研發出各種不同電容式 觸控面板，投射電容式觸控面板便係其中一種。如圖1、 ' 2所示，一種習知呈網格狀之投射電容式觸控圖形1包括 4 M396447 沿第一方向之第一電極2、沿第二 緣層4和基板5。，第之第—電極3及絕 叉分佈於基板5:二!:電極2與第二電極3相互交 理器（圖未示）連接至兩組 1 :外處 物件觸摸觸控面板表面蚌. 备可導電之觸控M396447 V. New Description: [New Technology Field] The present invention relates to the field of touch, and particularly relates to a touch panel for detecting multi-touch points and a touch device using the same. [Prior Art] • At present, the technology for directly operating electronic devices by touching touch objects such as fingers has been widely used in daily work and life. The electrical devices generally employ a touch device to sense touch actions and generate corresponding electrical signals for subsequent operation. The touch device is often in the form of a touch panel, a touch screen or the like in actual production or use. According to the different touch principles, the touch panel is mainly divided into a resistive type, a capacitive type, an optical type, an electromagnetic type, and an acoustic wave type. The working principle of the capacitive touch panel is that the touch surface of the panel is touched by the user with a conductive touch object such as a finger or an inductive pen, and the voltage is changed by the position where the panel is touched. The processor detects the coordinates of the touched position according to the voltage change to achieve the purpose of the touch operation. The working principle of the optical touch panel and the acoustic touch panel are similar, and the light source or sound wave is generated by the source, and the receiving device is arranged on the wave propagation route. When a touch occurs, the touch object blocks the wave propagation, and the signal received by the receiving device generates an abnormality to detect the touch point position. In order to cooperate with different electronic devices, the industry has developed a variety of different capacitive touch panels, and projected capacitive touch panels are one of them. As shown in FIG. 1 and FIG. 2, a conventional projected capacitive touch pattern 1 in the form of a grid includes 4 M396447 first electrode 2 along the first direction, along the second edge layer 4 and the substrate 5. The first electrode-electrode 3 and the permanent fork are distributed on the substrate 5: two!: the electrode 2 and the second electrode 3 are connected to each other (not shown) to the two groups 1: the external object touches the surface of the touch panel. Conductive touch
=自，容變化可由處理器_並測量出來。每組電】 ’今變化之質心位置代麵魅在每—電極方向上 之位置，觸摸點之座標位置由兩組電極方向上之質心交又 匹配汁异得出。故’習知伯測方法步驟為：a)分別掃描第 -電極2和第二電極3; b)解析出觸摸點在二電極上之自 電容變化之質心；e)由所述質心計算出觸摸點之座標。 當觸控面板表面同時出現至少二觸控點時，以二觸摸 點C、D為例’如目3所示，每組電極方向上就會解析出= Self, the change in capacitance can be measured by the processor _ and measured. Each set of electricity] ’ the position of the centroid of the current change is in the position of each electrode. The coordinate position of the touch point is obtained by the centroid of the two sets of electrodes and the matching juice. Therefore, the steps of the conventional method are as follows: a) scanning the first electrode 2 and the second electrode 3 respectively; b) analyzing the centroid of the self-capacitance change of the touch point on the two electrodes; e) calculating from the centroid The coordinates of the touch point. When at least two touch points appear on the surface of the touch panel at the same time, the two touch points C and D are taken as an example. As shown in item 3, the direction of each set of electrodes is resolved.
二質心，即第一方向上質心6a、6b和第二方向上質心％、 7b，由所述兩組質心相互交叉配置，計算出四座標位置 C(6a，7a)、C’(6a，7b)、D’(6b，7a)、D(6b，7b)，其令只有二 座標為所述二觸摸點之真座標c(6a，7a)、D(6b 7b)，另外 二座標為假座標 C’(6a，7b)、D’(6b，7a)。 同投射電容式觸控面板之觸摸點偵測原理相似，光學 式觸摸面板和聲波式觸控面板亦係利用二方向之感應線 路’分別感應出觸摸點在二方向接收信號發生異常之·位置 之質心’再藉由交又配置之方式計算出觸摸點座標。故， 當觸摸點數量多於二時，亦會產生假座標之問題。 由此可見’無論係使用習知投射電容式觸控面板，還 5 M396447 係使用光學式觸控面板和聲波式觸控面板來偵測至少兩 點觸摸時，就不可避免會產生觸摸點之假座標，使觸控面 板之應用受到限制。故，如何在偵測至少兩點觸摸中計算 出真座標，剔除假座標，便成為此類觸控面板及其偵測方 法上需要解決之問題。 【新型内容】 - 有鑒於此，有必要提供一種偵測多觸摸點之真座標之 • 觸控面板及使用該觸控面板之觸控裝置，以在觸控面板偵 測多觸摸點時，能準確判斷出真座標，同時剔除假座標。 一種偵測多觸摸點之真座標之觸控面板，包括具有第 一線路和第二線路之感應線路層，用於偵測所述多觸摸點 之原始座標。在所述感應線路層之一側設置有用於剔除所 述感應線路層偵測出之所述原始座標中之假座標而輸出 所述真座標之判斷線路層，所述判斷線路層具有第三線 籲珞。 . 一種偵測多觸摸點之真座標之觸控裝置，包括上述偵 測多觸摸點之真座標之觸控面板，導線和處理器。導線分 別電性連接感應線路層和判斷線路層至處理器。 採用上述偵測多觸摸點之真座標之觸控面板和偵測 方法，可克服習知觸控面板在偵測多點觸摸時易輸出假座 標之問題，準確計算出真座標。 6 M396447 【實施方式】 以下結合附圖及示例性之實施方式對本新型之技術 特徵和優點作更詳細之說明。惟應當理解，在未進一步敍 述之情況下，一實施方式中之元件、結構和特徵亦可有益 地結合到其他實施方式中。 圖4a為本新型第一實施方式之偵測多觸摸點之真座 標之觸控面板之剖面示意圖，第一實施方式為投射電容式 . 觸控面板。觸控面板100包括感應線路層110和設置於感 _ 應線路層一側之判斷線路層130。其中，感應線路層110 包括分佈於第一方向（圖4b中X轴方向）之複數第一電極 線路111、分佈於第二方向（圖4b中Y轴方向）之複數第 二電極線路112和絕緣層113。複數第一電極線路111和 複數第二電極線路112分佈於不同層，且相互交叉設置於 絕緣層113兩側，如圖4b為感應線路層110之平面結構 示意圖。判斷線路層130包括分佈於第三方向（圖4c中Z •轴方向）之複數第三電極線路131。如圖4c所示，Z方向 與X方向和Y方向不重合，且Z方向與X方向、Y方向 之間各形成一夾角。該二夾角既可相等，亦可不等。為了 使感應線路層110和判斷線路層130相互絕緣，在兩者之 間還設置一絕緣基板120。 第一電極線路m、第二電極線路112和第三電極線 路131分別由複數導線140連接至處理器150,形成偵測 多觸摸點之真座標之偵測裝置10，如圖5所示。 圖6a為本新型第二實施方式之偵測多觸摸點之真座 7 M396447 標之觸控面板200之剖面示意圖。第二實施方式之觸控面 板200與第一實施方式較為相似，亦係投射電容式觸控面 板。觸控面板200包括：感應線路層210(見圖6b)，設置 於感應線路層210 —側之判斷線路層230，和設置與感應 線路層210和判斷線路層230之間，使兩者相互絕緣之絕 緣基板220。不同之處在於，感應線路層210中，分佈於 第一方向X之複數第一電極線路211和分佈於第二方向γ - 之複數第二電極線路212設置於同層，在二電極線路交叉 _ 處之第一電極線路211和第二電極線路212之間設置複數 絕緣片213，參看圖6b感應線路層210之平面結構示意 圖。 感應線路層中X、Y方向電極線路圖形結構亦可不 同，如圖7所示，其為本新型第三實施方式之觸控面板之 感應線路層310之平面結構示意圖，其中分佈於第一方向 X之複數第一電極線路311可由複數第一導電單元311a 鲁和複數條第一導線311b組成，複數第一導電單元311a . 之間彼此分開，由複數條第一導線311b連接；分佈於第 二方向Y之複數第二電極線路312可由複數第二導電單 元312a和複數條第二導線312b組成，複數第二導電單元 312a之間彼此分開，由複數條第二導線312b連接。其中， 複數第一電極線路311和複數第二電極線路312之間由絕 緣層313隔開。第三實施方式中觸控面板之其他元件及位 置設置方式同第一實施方式。 ' 圖8為本新型第四實施方式之觸控面板之感應線路 8 M396447 層410之平面結構示意圖，其中分佈於第一方向x之複 數第一電極線路411可由複數第一導電單元411a和複數 條第一導線411b組成，複數第一導電單元411a之間彼此 分開，由複數條第一導線411b連接；分佈於第二方向Y 之複數第二電極線路412可由複數第二導電單元412a和 複數條第二導線412b組成，複數第二導電單元412a之間 • 彼此分開，由複數條第二導線412b連接。其中，複數第 一導電單元411a與複數第二導電單元412a和複數條第一 • 導線411b不相互接觸。在複數條第一導線411b和複數條 第二導線412b之間設置複數絕緣片413。第四實施方式 中觸控面板之其他元件及位置設置同第二實施方式。 上述導電單元可為任何幾何形狀，例如多邊形、圓形 等。在選擇材料上，一般為透明導電材料，例如氧化銦錫 (ITO)等。依據不同之設計需求，第一導電單元和第二 導電單元之數量分別為至少兩條，第一導線和第二導線之 I數量分別為至少一條。The two centroids, that is, the centroids 6a, 6b in the first direction and the centroids %, 7b in the second direction, are arranged by the two sets of centroids, and the four coordinate positions C (6a, 7a), C' (6a) are calculated. , 7b), D'(6b, 7a), D(6b, 7b), such that only two coordinates are the true coordinates c (6a, 7a), D (6b 7b) of the two touch points, and the other two coordinates are False coordinates C' (6a, 7b), D' (6b, 7a). Similar to the touch point detection principle of the projected capacitive touch panel, the optical touch panel and the acoustic touch panel also utilize the two-way sensing line to respectively sense the position where the touch point receives an abnormality in the two directions. The centroid 'calculates the touch point coordinates by means of the intersection and configuration. Therefore, when the number of touch points is more than two, a problem of false coordinates may also occur. It can be seen that 'when using the conventional projected capacitive touch panel, the 5 M396447 uses an optical touch panel and an acoustic touch panel to detect at least two touches, it is inevitable that a touch point will be generated. The coordinates make the application of the touch panel limited. Therefore, how to calculate the true coordinates in the detection of at least two touches and eliminate the false coordinates has become a problem to be solved in such a touch panel and its detection method. [New Content] - In view of this, it is necessary to provide a touch panel and a touch device using the touch panel to detect the multi-touch point of the multi-touch point, so that when the touch panel detects multiple touch points, Accurately judge the true coordinates and eliminate the false coordinates. A touch panel for detecting a true coordinate of a multi-touch point includes a sensing circuit layer having a first line and a second line for detecting an original coordinate of the multi-touch point. Providing, on one side of the sensing circuit layer, a judging circuit layer for rejecting the false coordinates in the original coordinates detected by the sensing circuit layer and outputting the true coordinates, wherein the determining circuit layer has a third line appeal Hey. A touch device for detecting a true coordinate of a multi-touch point, comprising the above-mentioned touch panel, a wire and a processor for detecting a true coordinate of a multi-touch point. The wires are electrically connected to the sensing circuit layer and the circuit layer to the processor. The above-mentioned touch panel and detection method for detecting the true coordinates of the multi-touch point can overcome the problem that the conventional touch panel is easy to output false coordinates when detecting multi-touch, and accurately calculate the true coordinates. 6 M396447 [Embodiment] The technical features and advantages of the present invention will be described in more detail below with reference to the accompanying drawings and exemplary embodiments. It is to be understood that the elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation. 4a is a schematic cross-sectional view of a touch panel for detecting the true coordinates of a multi-touch point according to the first embodiment of the present invention. The first embodiment is a projected capacitive type touch panel. The touch panel 100 includes an inductive circuit layer 110 and a judging circuit layer 130 disposed on the side of the sensing circuit layer. The sensing circuit layer 110 includes a plurality of first electrode lines 111 distributed in a first direction (the X-axis direction in FIG. 4b), a plurality of second electrode lines 112 distributed in a second direction (the Y-axis direction in FIG. 4b), and insulation. Layer 113. The plurality of first electrode lines 111 and the plurality of second electrode lines 112 are distributed in different layers and are disposed on opposite sides of the insulating layer 113. FIG. 4b is a schematic diagram showing the planar structure of the sensing circuit layer 110. It is judged that the wiring layer 130 includes a plurality of third electrode lines 131 distributed in the third direction (the Z-axis direction in Fig. 4c). As shown in Fig. 4c, the Z direction does not coincide with the X direction and the Y direction, and the Z direction forms an angle with each of the X direction and the Y direction. The two angles can be equal or unequal. In order to insulate the sensing circuit layer 110 and the judging circuit layer 130 from each other, an insulating substrate 120 is further disposed therebetween. The first electrode line m, the second electrode line 112, and the third electrode line 131 are respectively connected to the processor 150 by a plurality of wires 140 to form a detecting device 10 for detecting the true coordinates of the multi-touch point, as shown in FIG. FIG. 6a is a schematic cross-sectional view of the touch panel 200 according to the second embodiment of the present invention for detecting the multi-touch point. The touch panel 200 of the second embodiment is similar to the first embodiment, and is also a projected capacitive touch panel. The touch panel 200 includes an inductive circuit layer 210 (see FIG. 6b), a judging circuit layer 230 disposed on the side of the inductive circuit layer 210, and a gap between the sensing circuit layer 210 and the judging circuit layer 230 to insulate the two. The insulating substrate 220. The difference is that in the sensing circuit layer 210, the plurality of first electrode lines 211 distributed in the first direction X and the plurality of second electrode lines 212 distributed in the second direction γ - are disposed in the same layer, and intersect at the two electrode lines. A plurality of insulating sheets 213 are disposed between the first electrode line 211 and the second electrode line 212. Referring to FIG. 6b, a schematic structural view of the sensing circuit layer 210 is shown. The pattern structure of the X and Y direction electrode lines in the sensing circuit layer may also be different. As shown in FIG. 7 , it is a schematic plan view of the sensing circuit layer 310 of the touch panel of the third embodiment, which is distributed in the first direction. The plurality of first electrode lines 311 of X may be composed of a plurality of first conductive units 311a and a plurality of first wires 311b, and the plurality of first conductive units 311a are separated from each other by a plurality of first wires 311b; The plurality of second electrode lines 312 of the direction Y may be composed of a plurality of second conductive units 312a and a plurality of second wires 312b, and the plurality of second conductive units 312a are separated from each other by a plurality of second wires 312b. The plurality of first electrode lines 311 and the plurality of second electrode lines 312 are separated by an insulating layer 313. Other elements and position setting manners of the touch panel in the third embodiment are the same as those in the first embodiment. 8 is a plan view showing a planar structure of a sensing circuit 8 M396447 layer 410 of the touch panel of the fourth embodiment, wherein the plurality of first electrode lines 411 distributed in the first direction x may be composed of a plurality of first conductive units 411a and a plurality of The first conductive line 411b is composed of a plurality of first conductive units 411a separated from each other by a plurality of first conductive lines 411b; and the plurality of second electrode lines 412 distributed in the second direction Y may be composed of a plurality of second conductive units 412a and a plurality of strips The two wires 412b are formed, and the plurality of second conductive cells 412a are separated from each other by a plurality of second wires 412b. The plurality of first conductive units 411a and the plurality of second conductive units 412a and the plurality of first wires 411b are not in contact with each other. A plurality of insulating sheets 413 are disposed between the plurality of first wires 411b and the plurality of second wires 412b. Fourth Embodiment The other elements and positional arrangement of the touch panel are the same as those of the second embodiment. The above conductive elements may be of any geometric shape such as a polygon, a circle or the like. On the material of choice, it is generally a transparent conductive material such as indium tin oxide (ITO) or the like. According to different design requirements, the number of the first conductive unit and the second conductive unit are respectively at least two, and the number of the first wire and the second wire is at least one.
W 上述偵測多觸摸點之真座標之觸控面板可為光學式 觸控面板，其中感應線路層包括位於第一方向X之複數 條第一光學線路和位於第二方向Y之複數條第二光學線 路，同時判斷線路層包括位於第三方向Z之複數條第三 光學線路。三方向之光學線路可同上述投射電容式觸控面 板之電極線路分佈於不同層，亦可分佈於同層。當三方向 之光學線路分佈于同層時，可由處理器控制其工作順序， ' 在觸控面板表面依次出現第一光學線路、第二光學線路和 9 M396447 第三光學線路，來完成不同光學線路之工作。由於光學式 觸控面板和聲波式觸控面板之偵測原理類似，故上述偵測 多點觸摸之觸控面板還可為聲波式觸控面板。其結構同上 述光學式觸控面板。 上述偵測多點觸摸之觸控面板中各個元件依據實際 需要不同，可由透明材料製成，亦可由不透明材料製成。 電極線路由導電材料製成，而絕緣基板和絕緣片由絕緣材 - 料製成。其中不透明導電材料可為銅、鋁、金等金屬；透 • 明導電材料可為氧化銦錫（ITO)等；絕緣材料可為樹脂、 玻璃等。例如，當觸控面板為不透明時，可應用於筆記型 電腦等設備之觸控操作面板；當觸控面板為透明時，可應 用于顯示器等發光顯示設備之表面做成觸控操作螢幕。 上述偵測多點觸摸之觸控面板中複數第一線路可相 互平行。同理，複數第二線路亦可相互平行；複數第三線 路亦可相互平行。 Φ 上述偵測多點觸摸之觸控面板中第一線路和第二線 路包括分別至少兩條線路，其中電極數目由所應用之偵測 裝置之觸控解析度和尺寸大小而定。一般解析度要求愈 高，即晝素要求愈小，電極數目愈多；尺寸愈大，電極數 目亦愈多。 當上述觸控面板表面同時產生至少二觸摸點時，可由 圖9所示之偵測方法得到至少二觸摸點之真座標。以上述 投射電容式觸控面板上二觸摸點之偵測為例，結合圖10 • 所示，當觸控面板表面同時產生二觸摸點A、B時，在起 M396447 始步驟20之後，執行步驟2卜處理器藉由導線分別傳輸 掃描信號至感應線路層上位於X方向之複數第一電極線 路和位於Y方向之複數第二電極線路，對二方向之電極 線路進行掃描，分別偵測二方向電極線路產生之自電容變 化，並將此自電容變化信號傳回至處理器；在掃描二方向 電極線路之過程中，判斷線路層上位於Z方向之複數條 • 第三電極線路相互短接並且接地或者連接至固定輸出 . 端，作為遮罩層，用以遮罩在掃描感應線路層上之電極線 • 路時產生之電磁場干擾，使掃描過程更加精准。完成感應 線路層之掃描後，進入步驟22，處理器依據藉由掃描得 到之自電容變化資料，解析出觸摸點A、B在X方向之 自電容變化之質心X1、x2和Y方向之自電容變化之質心 yl、y2，並且依據上述質心計算出原始座標a(x 1，y 1)、 b(x2，y2)、a’(xl，y2)和 b’(x2，yl)。進入判斷步驟 23，處理 器判斷是否在X方向和Y方向之其中一方向上僅解析出 I 一質心。若判斷結果為否，即xl不等於x2或yl不等於 y2時，則進入步驟24，處理器藉由導線傳輸掃描信號至 判斷線路層上位於Z方向之複數條第三電極線路，對第 三電極線路進行掃描，偵測第三電極線路產生之自電容變 化，並將自電容變化信號傳回至處理器；在掃描第三電極 線路之過程中，第一電極線路和第二電極線路處於空置狀 態，以避免對第三電極線路掃描時造成之影響。掃描完成 後，進入步驟25，處理器依據藉由掃描得到之第三電極 • 線路自電容變化之資料，解析出觸摸點A、B在Z方向之 M396447 自電容變化之質心zl、z2，並且計算出二觸摸點A、B 在Z方向上之投影D卜D2，如圖11所示，此二投影D卜 D2係二觸摸點A、B之真實投影。在步驟26中，處理器 計算出步驟22中原始座標a(xl，yl)、b(x2，y2)、a’(xl，y2) 和 b’(x2，yl)在 Z 方向之投影 Dla、Dlb、Dla’和 Dlb’， 如圖11所示。進入步驟27，判斷步驟26中計算出之原 -始座標 a(xl，yl)、b(x2，y2)、a’(xl,y2)和 b’(x2，yl)在 Z 方 向之投影Dla、Dlb、Dla’、Dlb’與步驟25中計算出之 • 觸摸點A、B在Z方向上之投影D卜D2中一对应投影之 間之距離是否小於一預設參數值P。當判斷結果為是時， 則步驟26中計算出之投影對應之座標為觸摸點A、B之 真座標，進入步驟28，處理器輸出真座標。若判斷結果 為否時，則步驟26中計算出之投影對應之座標為觸摸點 A、B之假座標，進入步驟29,處理器刪除假座標。例如， Dla與D1之間之距離小於P，則Dla對應之座標a(xl，yl) ^為觸摸點A之真座標；Dla’與D1之間之距離大於P，則 .Dla’對應之座標a’(xl,y2)為觸摸點A之假座標。同理， 可判斷出觸摸點B之真座標。上述預設參數值P可依據 不同之操作要求來定義，例如，可用解析所對應之畫素來 定義；P之範圍大小可由具體實驗資料而定，例如，P至 少等於一晝素。 若判斷步驟23中判斷結果為是，即xl等於χ2或yl 等於y2時，則表明步驟22中處理器在X方向或Y方向 • 上僅解析出一質心，且計算出二原始座標。故，此二原始 12 M396447 座標為觸摸點A、B之真座標。在步驟23後，直接進入 步驟28,處理器輸出真座標。 上述處理器包括掃描單元、計算單元、比較判斷單元 H掃描單元用於提供掃描信號給各 同t接收掃！？程中產生之電信號 ’ Ϊ列如_fc_述^自電^ 2之=料單元執行計算自電容變化之質心和原始 做^相m斷^ ί㈣值和預設參數值進行比較，並 劫w,,认早凡則係將最終得出之真座標輸出至 執仃下一步操作之單元。 贝主 步驟28輸出之真庙押 出至顯示I置等輸出至控制設備，亦可輸 _ 執仃後續相關流程，此真座標之接 收端和用以執行之相關流程無特殊限制。 接 二Γη 方法亦可運用於偵測上述實施方式中之觸 ?工囬板表面’同時產生_ 標之_判斷。^上之觸摸點時，觸摸點之真座 觸偵❹點觸携之觸控面板為光學式或聲波式 ===法同上述投射電容式觸控面板= 此處不在贅述。 提出新型確已符合新型專利之要件，遂依法 式，自不能:此 技藝之人士援依本新型二:=利祕 應涵蓋於以下申請所作之等效修飾或變化，皆 13 M396447 【圖式簡單說明】 圖1係習知投射電容式觸控面板之平面結構示意圖。 圖2沿圖1中A-A線之剖面示意圖。 圖3係習知投射電容式觸控面板表面發生兩點觸摸 時之示意圖。 圖4a係第一實施方式之觸控面板之剖面示意圖。 圖4b係圖4a所示觸控面板之感應線路層之平面結構 示意圖。 圖4c係圖4a所示觸控面板之判斷線路層之平面結構 示意圖。 圖5係具有圖4所示觸控面板之偵測裝置之示意圖。 圖6a係第二實施方式之觸控面板之剖面示意圖。 圖6b係圖6a所示觸控面板之感應線路層之平面結構 示意圖。 圖7係第三實施方式之觸控面板之感應線路層之平 面結構示意圖。 圖8係第四實施方式之觸控面板之感應線路層之平 面結構示意圖。 標之偵測 圖9係一實施方式之偵測多觸摸點之真座 方法之流程圖^ 'The touch panel for detecting the true coordinates of the multi-touch point may be an optical touch panel, wherein the sensing circuit layer includes a plurality of first optical lines in the first direction X and a plurality of second lines in the second direction Y The optical circuit simultaneously determines that the circuit layer includes a plurality of third optical lines located in the third direction Z. The three-direction optical circuit can be distributed on different layers of the electrode lines of the above-mentioned projected capacitive touch panel, or can be distributed in the same layer. When the three-way optical lines are distributed in the same layer, the working sequence can be controlled by the processor, 'the first optical line, the second optical line and the 9 M396447 third optical line appear sequentially on the surface of the touch panel to complete different optical lines. Work. Since the detection principle of the optical touch panel and the acoustic wave touch panel is similar, the touch panel for detecting the multi-touch may also be an acoustic wave touch panel. The structure is the same as that of the above optical touch panel. The components of the touch panel for detecting multi-touch are different according to actual needs, and may be made of a transparent material or an opaque material. The electrode line is made of a conductive material, and the insulating substrate and the insulating sheet are made of an insulating material. The opaque conductive material may be a metal such as copper, aluminum or gold; the transparent conductive material may be indium tin oxide (ITO) or the like; and the insulating material may be a resin or a glass. For example, when the touch panel is opaque, it can be applied to a touch panel of a device such as a notebook computer; when the touch panel is transparent, it can be applied to a surface of a light-emitting display device such as a display to be a touch operation screen. The plurality of first lines in the touch panel for detecting the multi-touch may be parallel to each other. Similarly, the plural second lines can also be parallel to each other; the plural third lines can also be parallel to each other. Φ The first line and the second line of the touch panel for detecting multi-touch include at least two lines respectively, wherein the number of electrodes is determined by the touch resolution and size of the detecting device to be applied. The higher the general resolution requirement, the smaller the requirement for halogen, the more the number of electrodes; the larger the size, the more the number of electrodes. When at least two touch points are simultaneously generated on the surface of the touch panel, the true coordinates of at least two touch points can be obtained by the detecting method shown in FIG. Taking the detection of the two touch points on the above-mentioned projected capacitive touch panel as an example, as shown in FIG. 10, when the two touch points A and B are simultaneously generated on the surface of the touch panel, steps are performed after the start step 20 of M396447. The processor transmits the scan signal to the plurality of first electrode lines in the X direction and the plurality of second electrode lines in the Y direction on the sensing circuit layer, and scans the electrode lines in the two directions to detect the two directions. The self-capacitance change generated by the electrode line, and the self-capacitance change signal is transmitted back to the processor; in the process of scanning the two-direction electrode line, it is judged that the plurality of third electrodes in the Z direction on the circuit layer are short-circuited with each other and Grounding or connecting to the fixed output. As a mask layer, it is used to cover the electromagnetic field interference generated by the electrode lines on the scanning sensing circuit layer, which makes the scanning process more precise. After the scanning of the sensing circuit layer is completed, the process proceeds to step 22. The processor analyzes the centroids X1, x2, and Y of the self-capacitance changes of the touch points A and B in the X direction according to the self-capacitance change data obtained by the scanning. The centroids yl, y2 of the capacitance change, and the original coordinates a(x 1, y 1), b(x2, y2), a'(xl, y2), and b'(x2, yl) are calculated according to the centroid. In the judgment step 23, the processor determines whether or not only one centroid is resolved in one of the X direction and the Y direction. If the result of the determination is no, that is, if xl is not equal to x2 or yl is not equal to y2, then proceeding to step 24, the processor transmits the scan signal by the wire to determine a plurality of third electrode lines located in the Z direction on the circuit layer, and the third The electrode line scans to detect the self-capacitance change generated by the third electrode line, and transmits the self-capacitance change signal back to the processor; during the scanning of the third electrode line, the first electrode line and the second electrode line are vacant State to avoid the effects of scanning the third electrode line. After the scanning is completed, proceeding to step 25, the processor parses the centroids zl, z2 of the self-capacitance change of the M396447 in the Z direction according to the data of the third electrode and the line self-capacitance change obtained by scanning, and The projection Db D2 of the two touch points A, B in the Z direction is calculated. As shown in FIG. 11, the two projections D2 are the true projections of the two touch points A, B. In step 26, the processor calculates the projection Dla of the original coordinates a(xl, yl), b(x2, y2), a'(xl, y2), and b'(x2, yl) in the Z direction in step 22, Dlb, Dla', and Dlb' are shown in FIG. Proceeding to step 27, the projection of the original-starting coordinates a(xl, yl), b(x2, y2), a'(xl, y2), and b'(x2, yl) calculated in step 26 in the Z direction is determined. , Dlb, Dla', Dlb' and the distance between the projections of the touch points A, B in the Z direction and the corresponding projections in the D2 D2 are less than a preset parameter value P. When the judgment result is YES, the coordinate corresponding to the projection calculated in the step 26 is the true coordinates of the touch points A and B, and the process proceeds to step 28, and the processor outputs the true coordinates. If the result of the determination is no, the coordinates corresponding to the projections calculated in step 26 are the false coordinates of the touch points A and B, and the process proceeds to step 29, where the processor deletes the false coordinates. For example, if the distance between Dla and D1 is less than P, then the coordinate a(xl,yl)^ corresponding to Dla is the true coordinate of touch point A; the distance between Dla' and D1 is greater than P, then the coordinate corresponding to .Dla' a'(xl, y2) is the false coordinate of touch point A. In the same way, the true coordinates of the touch point B can be judged. The preset parameter value P can be defined according to different operation requirements, for example, can be defined by the pixel corresponding to the analysis; the range of the P can be determined by specific experimental data, for example, P is at least equal to one element. If the result of the determination in step 23 is YES, that is, xl is equal to χ2 or yl is equal to y2, it indicates that the processor in step 22 resolves only one centroid in the X direction or the Y direction, and calculates the two original coordinates. Therefore, the original 12 M396447 coordinates are the true coordinates of touch points A and B. After step 23, proceed directly to step 28 where the processor outputs the true coordinates. The processor includes a scanning unit, a calculating unit, and a comparison determining unit. The scanning unit is configured to provide a scanning signal to each of the t receiving sweeps! ? The electrical signal generated in the process is listed as _fc_, ^ self-electric ^ 2 = material unit performs calculation of the self-capacitance change centroid and the original ^ phase m break ^ ί (four) value and preset parameter values are compared, and Robbing w, and recognizing the early will be the final coordinates of the final output to the unit of the next operation. The main part of the output of step 28 is outputted to the display device and output to the control device, and can also be input _ to execute the subsequent related processes. There is no special restriction on the receiving end of the real coordinate and the related processes for execution. The method of connecting the two Γ η can also be applied to detect the surface of the touch panel in the above embodiment while determining the _ mark. ^When the touch point is touched, the touch point is touched. The touch panel is touched by the touch panel. The touch panel is optical or sonic. === The same as the above projected capacitive touch panel = not described here. It is proposed that the new type has met the requirements of the new type of patent, and it can not be: The person of this skill is assisted by this new type two: = the secret should cover the equivalent modification or change made in the following application, all 13 M396447 [simple figure Description of the drawings Fig. 1 is a schematic view showing the planar structure of a conventional projected capacitive touch panel. Figure 2 is a cross-sectional view taken along line A-A of Figure 1. FIG. 3 is a schematic diagram of a conventional two-touch touch on the surface of a projected capacitive touch panel. 4a is a schematic cross-sectional view of a touch panel of the first embodiment. 4b is a schematic view showing the planar structure of the sensing circuit layer of the touch panel shown in FIG. 4a. 4c is a schematic view showing the planar structure of the circuit layer of the touch panel shown in FIG. 4a. FIG. 5 is a schematic diagram of a detecting device having the touch panel shown in FIG. 4. 6a is a schematic cross-sectional view of a touch panel of a second embodiment. Figure 6b is a schematic view showing the planar structure of the sensing circuit layer of the touch panel shown in Figure 6a. Fig. 7 is a schematic view showing the planar structure of the sensing circuit layer of the touch panel of the third embodiment. Fig. 8 is a plan view showing the structure of a sensing circuit layer of the touch panel of the fourth embodiment. Figure 9 is a flow chart of a method for detecting a multi-touch point in an embodiment ^ '
圖10係當觸控面板表明產生二職點時之示意圖 圖11係圖10中觸摸點座標在第三方向之投影^意 〇 M396447 【主要元件符號說明】 偵測裝置10 觸控面板100、200 感應線路層110、210、310、410 絕緣基板120、220 判斷線路層130、230 第一電極線路 111、211、311、411 • 第一導電單元311a、411a •第一導線 311b、411b 第二電極線路112、212、312 第二導電單元312a、412a 第二導線 312b、412b 絕緣層113、313 絕緣片213、413 第三電極線路131 鲁導線140 處理器150 15FIG. 10 is a schematic diagram showing when the touch panel indicates that the second position is generated. FIG. 11 is a projection of the touch point coordinates in the third direction in FIG. 10. 〇 M396447 [Description of main component symbols] detecting device 10 touch panel 100, 200 Inductive circuit layer 110, 210, 310, 410 Insulating substrate 120, 220 Judging circuit layer 130, 230 First electrode line 111, 211, 311, 411 • First conductive unit 311a, 411a • First wire 311b, 411b Second electrode Line 112, 212, 312 second conductive unit 312a, 412a second wire 312b, 412b insulating layer 113, 313 insulating sheet 213, 413 third electrode line 131 ruin wire 140 processor 150 15