200935290 touched portion among the stripes of the first resistive detection pattern and the second resistive detection pattern to obtain X and Y coordinates. Although only one touch point is identified in a conventional case, it is possible to provide a touch screen capable of identifying a multi-touch which cannot be identified in the conventional resistive touch screen. 四、指定代表圖： (一） 本案指定代表圖為：第（2)圖。 (二） 本代表圖之元件符號簡單說明： 100〜絕緣膜； 200〜下透明膜； 200a〜Y轴透明電阻檢測圖案； 200b〜Y軸電極； 300〜上透明膜； 300a〜X轴透明電阻檢測圖案； 300b〜X轴電極。 五、本案若有化學式時， 無0 請揭示最能顯示發明特徵的化學式 六、發明說明： 5151-10257-PF;Ahddub 200935290 【發明所屬之技術領域】 本發明係關於電阻式觸控銀幕，特別有關於可以辨識 多次觸按的電阻式觸控銀幕。 【先前技街】 第1圖係用以說明習知電阻式觸控銀幕的表示圖。下 透明膜20和上透明膜30堆疊在絕緣膜1〇上。IT〇(氧化姻 ❹ 錫）電阻膜20a和30a分別在下透明膜20的上表面和上透 明膜30的下表面上形成。施加電壓的電極2〇b和3〇b，分 別位於ITO電阻膜20a和30a的相對端。位於下透明膜2〇 上的Y轴電極20b以及位於上透明膜30上的X轴電極3〇b 排列成互相垂直。 如果在ITO電阻膜20a和30a上觸按，藉由交替施加 電壓至X轴電極30b和Y軸電極20b，在觸按點偵測到電 壓，因此得到X和Y座標。不過，由於習知方法一次只可 ❿ 以辨識一個觸按，有不能辨識多次觸按的問題。 此外，ITO t阻膜20a* 30a㈤寬度分·大以顯示 薄層電阻特性，使得對於離各中心較遠的位置的感應錯誤 更大。於是，在此情況下，需要適當的更正以得到確實的 感應座標。 【發明内容】 因此，本發明鑑於以上問題而製作，且本發明的目的 係提供可以辨識多次觸按的電阻式觸控銀幕。. 5151-10257-PF;Ahddub = 3 200935290 本發明的另一目的係提供電阻式觸控銀幕，其中電阻 膜具有小寬度以顯示線電阻特性，因此不需要習知的座標 更正。 根據本發明的一形態，藉由提供電阻式觸控銀幕可以 達成上述和其他目的，包括：一絕緣膜；—下透明膜，堆 疊在上述絕緣膜上；一上透明膜，堆疊在上述下透明膜上； 一第1電阻檢測圖案’在上述下透明膜上形成，且具有平 行排列的複數線條；一第2電阻檢測圖案，在上述上透明 ❹ 膜上形成，且具有平行排列的複數線條，其中上述第j電 阻檢測圖案和上述第2電阻檢測圖案互相垂直相交；第i 電極，位於上述第丨電阻檢測圖案線條相對端；第2電極， 位於上述第2電阻檢測圖案線條相對端；以及一座標辨識 單位，施加電壓給上述第丨電極和上述第2電極，並讀出 被觸按的按觸部分電壓，以得到X和γ座標。 上述第1電阻檢測圖案最好在下透明膜的上表面上， φ 以及上述第2電阻檢測圖案最好在上透明膜的下表面上。 上述第1電阻檢測圖案以及上述第2電阻檢測圖案最好形 成透明導電膜（即，ιτο膜）。 上述第1電極和上述第2電極最好使用銀墨形成。 上述座標辨識單位最好只交替施加電壓給有關上述第 1電阻檢測圖案及上述第2電阻檢測圖案的線條之中觸按 部分的線條，以得到X和γ座標。 上述座標辨識單位檢測XY座標，最好考慮當觸按位置 在上述第1電阻檢測圖案及上述第2電阻檢測圖案相交的 5151-l〇257-pF;Ahddub 200935290 區域中變化時，對於發生變化的位置變化。 當同時觸按上述第i電阻檢測圖案的相鄰線條時，座 標辨識單元最好讀出上述同時觸按的第1電阻檢測圖⑽ 條的各電遷，並檢測出座標值作為電壓的平均值。當同時 觸按上述第2電阻檢測圖案的相鄰線條時，座標辨^單元 最好讀出上述同時觸按的第2電阻檢測圖案線條的各= 壓，並檢測出座標值作為電壓的平均值。 #發生多次觸按及觸按的位置形成封閉迴路而觸按多 於兩線條的第i電阻檢測圖案時，最好藉由同時施加電壓 給觸按的第i電阻檢測圖案線條，座標辨識單元讀出座標 值。當觸按的位置形成封閉迴路而觸按多於兩線條的第: 電阻檢測圖案時，最好藉由同時施加電壓給觸按的第2電 阻檢測圖案線條，座標辨識單元讀出座標值。 [有利效果] 在習知電阻式觸控銀幕中，只能辨識一觸按點。不過， Φ 根據本發明，可以提供能夠辨識在習知電阻式觸控銀幕中 不能辨識的多次觸按的觸控銀幕。此外，IT〇電阻膜具有 複數的線條（各具有小寬度並顯示線電阻特性），不需要由 於習知的ΙΤ0電阻膜的薄層電阻特性而有的座標更正。 本發明的上述及其他目的、特徵及優點，因以下結合 附圖的詳細說明而更清楚明瞭。 【實施方式】 以下，將參考附圖，說明本發明的較佳實施例。 5151-10257-PF;Ahddub 200935290 第2圖係用以說明根據本發明能夠辨識多次觸按的電 阻式觸控銀幕的顯示圖。下透明膜2〇〇和上透明膜在 絕緣膜100上堆疊。γ軸透明電阻檢測圖案2〇〇a在下透明 膜200的上表面上形成，而X軸透明電阻檢測圖案〇&在 上透明膜300的下表面上形成。 透明電阻檢測圖案200a和300a可以如同習知範例形 成ITO膜。不過’以不同於習知範例的方式，單—膜具有 複數的線條。Y轴透明電阻檢測圖案200a和X軸透明電阻 ® 檢測圖案300a排列成互相垂直，而線條在其中形成列和 行。Y轴電極200b和X軸電極300b分別在透明電阻檢測 圖案200a和300a的線條的相對端形成。電極2〇〇1)和3〇〇b 可以使用銀墨。 第3圖係第2圖的上視圖，只顯示透明電阻檢測圖案 200a和300a以及電極20 0b和300b’用以說明本發明可以 辨識多次觸按的優點。 ^ [A點的座標] 施加VDD(供應電壓）至Y1 +以及施加GND(接地電壓）至 Y卜後，在X2 + (或X2-)檢測出一電壓，且上述電壓值代表 一 X座標值。 即’ X座標電壓=VDD*(l/6)+AV=X座標值 施加VDD至X2 +以及施加GND至X2-後，在γ1 +(或γ卜） 檢測出一電壓，且上述電壓值代表一 γ座標值。 即，Υ座標電壓=VDD>K8/9)+AV=Y座標值 既然如此，ΔΥ代表電壓變化，發生於當a點位置在 5151-10257-PF;Ahddub 6 200935290 X2軸與Y1軸相交的區域中變化。最大的av在χ轴中不超 過VDD*(l/6)，且最大的Δν在Y轴中不超過VDD*(l/9)。 觸按位置在Y軸透明電阻檢測圖案200a與X軸透明電 阻檢測圖案300a相交的區域中改變的情況下，△ v的大小 改變。因此，即使在γ軸透明電阻檢測圖案2〇〇a與X轴透 明電阻檢測圖案300a相交的區域中，也可以藉由反映△ v 的變化而得到準確的觸按位置。 [B點的座標] m 施加VDD(供應電壓）至γι +以及施加GND(接地電壓）至 Y1-後，在X4+(或X4-)和X5 + (或X5-)檢測出一電壓以得到 一第1平均值，而施加VDD至Y2 +以及施加GND)至Y2-後， 在X4 + (或X4-)和χ5 +(或X5_)檢測出一電壓以得到一第2 平均值。然後，再得到上述第丨平均值和上述第2平均值 的一平均值，而上述平均電壓值代表一义座標值。 施加VDD至X4 +以及施加GND至X4-後 ’在 Π +(或 Y1-)200935290 touched portion among the stripes of the first resistive detection pattern and the second resistive detection pattern to obtain X and Y coordinates. Although only one touch point is identified in a conventional case, it is possible to provide a touch screen capable of identifying a multi -touch which cannot be identified in the conventional resistive touch screen. Fourth, the designated representative map: (a) The representative representative of the case is: (2). (2) A brief description of the components of the representative figure: 100~insulating film; 200~low transparent film; 200a~Y axis transparent resistance detecting pattern; 200b~Y axis electrode; 300~up transparent film; 300a~X axis transparent resistor Detection pattern; 300b to X-axis electrode. 5. If there is a chemical formula in this case, there is no 0. Please disclose the chemical formula which best shows the characteristics of the invention. 6. Description of the invention: 5151-10257-PF; Ahddub 200935290 [Technical Field of the Invention] The present invention relates to a resistive touch screen, in particular It is about a resistive touch screen that can recognize multiple touches. [Previous Technology Street] Fig. 1 is a diagram for explaining a conventional resistive touch screen. The lower transparent film 20 and the upper transparent film 30 are stacked on the insulating film 1''. The IT 〇 (oxidized samarium tin) resistive films 20a and 30a are formed on the upper surface of the lower transparent film 20 and the lower surface of the upper transparent film 30, respectively. The electrodes 2 〇 b and 3 〇 b to which voltage is applied are located at opposite ends of the ITO resistance films 20a and 30a, respectively. The Y-axis electrode 20b on the lower transparent film 2''' and the X-axis electrode 3'b on the upper transparent film 30 are arranged to be perpendicular to each other. If touched on the ITO resistive films 20a and 30a, by alternately applying a voltage to the X-axis electrode 30b and the Y-axis electrode 20b, a voltage is detected at the touch point, thereby obtaining X and Y coordinates. However, since the conventional method can only recognize one touch at a time, there is a problem that the multiple touch cannot be recognized. Further, the ITO t resist film 20a* 30a (five) has a width and a large width to exhibit a sheet resistance characteristic, so that the sensing error for a position farther from the center is larger. Thus, in this case, appropriate corrections are needed to obtain a true inductive coordinate. SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above problems, and an object of the present invention is to provide a resistive touch screen that can recognize multiple touches. 5151-10257-PF; Ahddub = 3 200935290 Another object of the present invention is to provide a resistive touch screen in which the resistive film has a small width to exhibit line resistance characteristics, thus eliminating the need for conventional coordinate correction. According to an aspect of the present invention, the above and other objects are achieved by providing a resistive touch screen, comprising: an insulating film; a lower transparent film stacked on the insulating film; and a transparent film stacked on the lower surface a first resistance detecting pattern 'formed on the lower transparent film and having a plurality of lines arranged in parallel; a second resistance detecting pattern formed on the upper transparent film and having a plurality of lines arranged in parallel, The ninth resistance detecting pattern and the second resistance detecting pattern intersect each other perpendicularly; the ith electrode is located at an opposite end of the ninth resistance detecting pattern line; the second electrode is located at an opposite end of the second resistance detecting pattern line; and The coordinate recognition unit applies a voltage to the second electrode and the second electrode, and reads the touched partial voltage of the touch to obtain X and γ coordinates. Preferably, the first resistance detecting pattern is on the upper surface of the lower transparent film, and φ and the second resistance detecting pattern are preferably on the lower surface of the upper transparent film. Preferably, the first resistance detecting pattern and the second resistance detecting pattern form a transparent conductive film (i.e., a film). The first electrode and the second electrode are preferably formed using silver ink. Preferably, the coordinates identifying unit alternately applies a voltage to the lines of the touched portions of the lines of the first resistance detecting pattern and the second resistance detecting pattern to obtain X and γ coordinates. The coordinate recognition unit detects the XY coordinates, and preferably considers that the touch position changes when the first resistance detection pattern and the second resistance detection pattern intersect in the range of 5151-l〇257-pF; Ahddub 200935290 The position changes. When the adjacent lines of the ith resistance detecting pattern are simultaneously touched, the coordinate identifying unit preferably reads out the respective electromigrations of the first resistive detecting pattern (10) that are simultaneously touched, and detects the coordinate value as the average value of the voltage. . When the adjacent lines of the second resistance detecting pattern are simultaneously touched, the coordinate identifying unit preferably reads out the respective voltages of the second resist detecting pattern lines touched at the same time, and detects the coordinate value as the average value of the voltage. . # When multiple touch and touch positions form a closed loop and touch the ith resistance detection pattern of more than two lines, it is preferable to detect the pattern line by simultaneously applying a voltage to the ith resistance of the touch, the coordinate recognition unit Read the coordinate value. When the touched position forms a closed loop and the more than two lines of the: resistance detecting pattern are touched, it is preferable to detect the pattern line by simultaneously applying a voltage to the touched second resistive pattern line, and the coordinate identifying unit reads the coordinate value. [Advantageous Effects] In the conventional resistive touch screen, only one touch point can be recognized. However, Φ According to the present invention, it is possible to provide a touch screen capable of recognizing a plurality of touches that are not recognized in a conventional resistive touch screen. Further, the IT 〇 resistive film has a plurality of lines (each having a small width and exhibiting a line resistance characteristic), and does not require coordinate correction due to the thin layer resistance characteristics of the conventional ΙΤ0 resistive film. The above and other objects, features and advantages of the present invention will become more apparent from [Embodiment] Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. 5151-10257-PF; Ahddub 200935290 Fig. 2 is a view for explaining a display of a resistive touch screen capable of recognizing a plurality of touches according to the present invention. The lower transparent film 2 〇〇 and the upper transparent film are stacked on the insulating film 100. The γ-axis transparent resistance detecting pattern 2〇〇a is formed on the upper surface of the lower transparent film 200, and the X-axis transparent resistance detecting pattern 〇& is formed on the lower surface of the upper transparent film 300. The transparent resistance detecting patterns 200a and 300a can be formed into an ITO film as in the conventional example. However, in a manner different from the conventional example, the single-film has a plurality of lines. The Y-axis transparent resistance detecting pattern 200a and the X-axis transparent resistance ® detecting patterns 300a are arranged to be perpendicular to each other, and the lines form columns and rows therein. The Y-axis electrode 200b and the X-axis electrode 300b are formed at opposite ends of the lines of the transparent resistance detecting patterns 200a and 300a, respectively. Silver ink can be used for the electrodes 2〇〇1) and 3〇〇b. Fig. 3 is a top view of Fig. 2 showing only the transparent resistance detecting patterns 200a and 300a and the electrodes 20b and 300b' for explaining the advantage that the present invention can recognize multiple touches. ^ [Coordinate of point A] After applying VDD (supply voltage) to Y1 + and applying GND (ground voltage) to Y b, a voltage is detected at X2 + (or X2-), and the above voltage value represents an X coordinate value. . That is, 'X coordinate voltage=VDD*(l/6)+AV=X coordinate value is applied VDD to X2 + and GND is applied to X2-, a voltage is detected at γ1 + (or γ b), and the above voltage value represents A gamma coordinate value. That is, the Υ coordinate voltage = VDD > K8 / 9) + AV = Y coordinate value. Thus, Δ Υ represents the voltage change, which occurs when the point a is at 5151-10257-PF; Ahddub 6 200935290 the area where the X2 axis intersects the Y1 axis Change in the middle. The maximum av does not exceed VDD*(l/6) in the x-axis, and the maximum Δν does not exceed VDD*(l/9) in the Y-axis. In the case where the touch position is changed in the region where the Y-axis transparent resistance detecting pattern 200a and the X-axis transparent resistance detecting pattern 300a intersect, the magnitude of Δ v changes. Therefore, even in the region where the γ-axis transparent resistance detecting pattern 2〇〇a intersects with the X-axis transparent resistance detecting pattern 300a, an accurate touch position can be obtained by reflecting the change in Δv. [Coordinate of point B] m After applying VDD (supply voltage) to γι + and applying GND (ground voltage) to Y1-, a voltage is detected at X4+ (or X4-) and X5 + (or X5-) to obtain a After the first average value, while applying VDD to Y2 + and applying GND) to Y2-, a voltage is detected at X4 + (or X4-) and χ5 + (or X5_) to obtain a second average value. Then, an average value of the above-mentioned second average value and the above second average value is obtained, and the average voltage value represents a nominal coordinate value. Apply VDD to X4 + and apply GND to X4- after ' at Π + (or Y1-)
電壓值代表一 Y座標值。 同樣地，The voltage value represents a Y coordinate value. Similarly,
C點，不能檢測出c點。不過，在本發 特別是’當以一般矩陣力 D點的狀態下觸按c點， 明中可以獨立檢測出C銳 5l51-10257-PF；Ahddub 7 200935290 [c點的座標] 施加VDD(供應電壓）至Y5+以及施加GND(接地電壓）至 Y5-後，在X2 + (或X2-)檢測出一電壓，且上述電壓值代表 一 X座標值。 即，X座標電壓=VDD*(l/6)+A V=X座標值 施加VDD至X2+以及施加GND至X2-後，在Y5 + (或Y5-) 檢測出一電壓，且上述電壓值代表一 γ座標值。 即’ Υ座標電壓=VDD*(4/9) + A V=Y座標值 @ [D點的座標] 施加VDD至Y5+以及施加GND至Y5-後，在X6 + (或X6-) 檢測出一電壓’且上述電壓值代表一 X座標值。 即，X座標電壓=VDD*(5/6；HA V=X座標值 施加VDD至X6 +以及施加GND至X6-後，在Y5 + (或Y5-) 檢測出一電壓’且上述電壓值代表一 ¥座標值。 即，Υ座標電壓=VDD*(4/9)+A V=Y座標值 〇 [F和G點的座標] F和G點不能獨立辨識。至於理由，G點兩者存在 於透明電阻檢測圖案2〇〇a和3〇〇a中的行與γ列相交的 部分。藉由再分隔透明電阻檢測圖案200a和30〇a的列和 订’可以解決此問題。在能夠維持& ΙΤ0的絕緣範圍内’ °好最I化用作透明導電薄膜的透明電阻檢測圖案 和300a的行之間和列之間的距離。 不過，即使是第3圖.，當發生某一特殊多次觸按時， 可能難以檢測出觸按的^番 楚 获的位置第4a和4b圖係用以解釋第 。 5l51-l〇257-PF;Ahddub 。 200935290 3圖中的如此的問題。 當第4a圖中只觸按H、！及j點不形成封閉迴路時， 為了讀出Η點，施加VDD至γ1 +電極並施加gnd至η —電 …'、後在X2 + (或X2-)檢測出一電壓。此電壓值代表η點、 ❹ ❹ 、不過’當同時觸按H+J和K點，且這些觸按點形 成一封閉迴路日夺’在平行於需要實際測量的電阻元件，產 生附加的電阻元件，如第4b圖所示。即然如此，測 得不同於精確的座標值。 參考Η點作為範例，數值如下。 1) 讀出作為精確座標值的數值： X 座標值=VDD*iil/(R6+R5+Rl) 2) 由於形成封閉迴路，將實際讀出的數值： X 座標值=VDD*R1(R6 + (R5/R2+R3+R4))+R1) 比較等式1)和等式2)，會知道X轴值互不相同。因此， 當形成封閉迴路時，希望根據以下的方法得到座標值。 即，當觸按H、I、J和K形成封閉迴路時，施加VDD(供 應電壓）至Y1 +電極以及施加GND(接地電壓）至γι_電極， 同時也施加VDD(供應電壓）至Υ4+電極以及施加GND(接地 電壓）至Y4-電極。之後，對應η點的電壓在χ2+電極讀出， 而對應J點的電壓在Χ2-電極讀出。第5圖係用以說明此 情況的電路圖模型。 在理想的情況下，如第5(a)圖所示，！和κ點的座標 值分別為VI=4.375V和VK = 4.792V。不過，當η、卜】和κ 5151-10257-PF;Ahddub 9 200935290 形成如第5(b)圖所示的封閉迴路時，vi=4. 259V和 VK = 3. 593V ,分別不同於理想的座標值。特別如果是νκ， 差異合計大於IV，這在座標位置中引起很大的錯誤。 第5(c)圖係防止形成如此封閉迴路時引起錯誤的模 型。當形成封閉迴路時’施加VDD至Υ1 +電極以及施加gnd 至Υ卜電極’同時也施加VDD至Υ4+電極以及施加gnd至 Υ4-電極。之後，對應！和κ點的電壓在別+ (或χ6_)電極 讀出。於是VI = 4.440V及VK=4.765V，與理想座標差不多。 即，根據上述，可以更正由於形成封閉迴路的電阻值變化 所引起的位置錯誤。 當同時觸按L和Μ兩點’如第4a圖所示，且極仔細觀 察時，它們也形成封閉迴路，和上述情況相同。既然如此， 施加VDD至Y5 +和Y6+，同時施加GND至Y5-和Y6-。然後， 在X2(或X3)讀出L點的座標值，而在X5(或χ6)讀出M點 的座標值。於是，當同時觸按兩點例如” L和N，， 、” N和 〇’’或’’ Μ和0”時，也可以使用同樣的方法讀出座標值。 根據本發明的觸控銀幕的垂直結構具有與習知電阻式 觸控銀幕結構相同的結構。因此，根據本發明，除了手指， 所有的工具，例如可以使用於習知電阻式觸按銀幕的針 筆、卡片和指甲，可以用於觸按觸控銀幕。 根據本發明，用於讀出觸控銀幕的座標值的辨識電路 中，相同於用於讀出習知的電阻式觸按銀幕的座標值的習 知方法，只施加電壓給有關觸按區域的行和列，以讀出座 標°因此’可防止浪費時間和電源。特別是，為了最小化 5151-l〇257-PF;Ahddub 10 200935290 移動式裝置中的電池消耗，制電源應最小化。雖濟在習 知電阻式觸控銀幕中不能辨識多次觸按，但根據本發明， 可以提供能夠辨識多次觸按的觸控銀幕而保持習知 控銀幕的所有優點。此外電阻媒具有複數的線條（各 具有小寬度並顯示線電阻特性)，不需要由於習知電 控銀幕的薄層電阻特性的座標更正。 工 雖然已為了圖示目的而揭露本發明的較佳實施例，熟 悉本技藝者將領會可以作修改、附加和替代，而不偏離如' 附加的中請專利範圍中所㈣的本發明的範圍和精神。 【圖式簡單說明】 [第1圖]係習知電阻式觸控銀幕的說明圖； [第2圖]係用以說明根據本發明能夠辨識多次觸按的 電阻式觸控銀幕的顯示圖； [第3圖]係第2圖的上視圖； [第4a和4b圖]係用以說明本發明中形成封閉迴路時 的問題的顯示圖；以及 [第5(a)至5(c)圖]係電路圖模型， 玉用以說明當形成 封閉迴路時解決問題的結構。 【主要元件符號說明】 10〜絕緣膜； 20〜下透明膜； 20a〜氧化銦錫電阻膜； 5l51-i〇257-PF；Ahddub 11 200935290 20b〜Y軸電極； 3 0〜上透明膜； 30a〜氧化銦錫電阻膜； 30b〜X軸電極； 1 0 0〜絕緣膜； 200〜下透明膜； 200a〜Y轴透明電阻檢測圖案； 200b〜Y轴電極； 300〜上透明膜； 300a〜X軸透明電阻檢測圖案； 300b〜X轴電極； A、B、C、D、E、F和 G〜點； H、I、J、K、L、M、N和 0〜點。At point C, c point cannot be detected. However, in this issue, especially when 'C point is pressed in the state of the general matrix force D point, C sharp 5l51-10257-PF can be detected independently; Ahddub 7 200935290 [coordinate of point c] Apply VDD (supply After voltage) to Y5+ and GND (ground voltage) to Y5-, a voltage is detected at X2 + (or X2-), and the above voltage value represents an X coordinate value. That is, after the X coordinate voltage=VDD*(l/6)+AV=X coordinate value is applied VDD to X2+ and GND is applied to X2-, a voltage is detected at Y5+ (or Y5-), and the above voltage value represents one γ coordinate value. That is, 'Υ coordinate voltage=VDD*(4/9) + AV=Y coordinate value @ [coordinate of point D] After applying VDD to Y5+ and applying GND to Y5-, a voltage is detected at X6 + (or X6-) 'And the above voltage values represent an X coordinate value. That is, the X coordinate voltage = VDD* (5/6; HA V = X coordinate value is applied VDD to X6 + and GND is applied to X6 -, a voltage is detected at Y5 + (or Y5-)' and the above voltage value represents One coordinate value. That is, Υ coordinate voltage = VDD * (4 / 9) + AV = Y coordinate value 〇 [F and G point coordinates] F and G points can not be independently identified. For reasons, both points G exist in The portion of the transparent resistance detecting patterns 2〇〇a and 3〇〇a intersecting the γ column. This problem can be solved by further separating the columns and the order of the transparent resistance detecting patterns 200a and 30〇a. ; ° 0 in the insulation range ' ° is the best I use as a transparent conductive film transparent resistance detection pattern and 300a between the rows and between the columns. However, even in Figure 3, when a certain special occurs At the time of the second touch, it may be difficult to detect the position of the touch. The 4a and 4b maps are used to explain the paragraph. 5l51-l〇257-PF; Ahddub. 200935290 3 Such a problem in the figure. In the figure 4a, when only H, !, and j are touched to form a closed loop, in order to read the defect, VDD is applied to the γ1 + electrode and gnd is applied to η - electricity...' X2 + (or X2-) detects a voltage. This voltage value represents η point, ❹ 、 , but 'when H + J and K points are touched at the same time, and these touch points form a closed loop. The actual measured resistance element is required to produce an additional resistance element, as shown in Figure 4b. That is, the measurement is different from the exact coordinate value. The reference point is taken as an example and the values are as follows: 1) Read as a precise coordinate value Value: X coordinate value = VDD * iil / (R6 + R5 + Rl) 2) The value actually read out due to the formation of a closed loop: X coordinate value = VDD * R1 (R6 + (R5 / R2 + R3 + R4 ))) +R1) Comparing Equation 1) with Equation 2), we know that the X-axis values are different from each other. Therefore, when forming a closed loop, it is desirable to obtain a coordinate value according to the following method. That is, when H, I, J, and K are touched to form a closed loop, VDD (supply voltage) is applied to the Y1 + electrode and GND (ground voltage) is applied to the γι_electrode, and VDD (supply voltage) is also applied to the Υ4+ electrode. And apply GND (ground voltage) to the Y4-electrode. Thereafter, the voltage corresponding to the η point is read at the χ2+ electrode, and the voltage corresponding to the J point is read at the Χ2-electrode. Figure 5 is a circuit diagram model used to illustrate this situation. In the ideal case, as shown in Figure 5(a)! The coordinate values of the and κ points are VI=4.375V and VK = 4.792V, respectively. However, when η, 卜, and κ 5151-10257-PF; Ahddub 9 200935290 forms a closed loop as shown in Figure 5(b), vi = 4.259V and VK = 3. 593V, respectively, different from ideal Coordinate value. Especially if it is νκ, the total difference is greater than IV, which causes a big error in the coordinate position. Figure 5(c) is a model that prevents errors when forming such a closed loop. When a closed loop is formed, 'application of VDD to Υ1 + electrode and application of gnd to 电极b electrode' simultaneously apply VDD to Υ4+ electrode and apply gnd to Υ4-electrode. After that, corresponding! The voltage at the κ point is read at the other + (or χ6_) electrode. Thus VI = 4.440V and VK = 4.765V, which is similar to the ideal coordinates. Namely, according to the above, it is possible to correct a positional error caused by a change in the resistance value of the closed loop. When the two points of L and 同时 are simultaneously touched, as shown in Fig. 4a, and they are observed very carefully, they also form a closed loop, which is the same as above. In this case, apply VDD to Y5 + and Y6+ while applying GND to Y5- and Y6-. Then, the coordinate value of the L point is read at X2 (or X3), and the coordinate value of the M point is read at X5 (or χ6). Thus, when two points such as "L and N,", "N and 〇" or "' Μ and 0" are simultaneously touched, the same method can be used to read the coordinate value. The touch screen according to the present invention The vertical structure has the same structure as the conventional resistive touch screen structure. Therefore, according to the present invention, in addition to the fingers, all the tools, for example, can be used for the conventional resistive touch screen stylus, card and nail, and can be used. In accordance with the present invention, the identification circuit for reading the coordinate value of the touch screen is the same as the conventional method for reading the coordinate value of the conventional resistive touch screen. The voltage is given to the rows and columns of the touch area to read out the coordinates. Therefore 'can prevent wasting time and power. Especially, in order to minimize the battery consumption in the 5111-l〇257-PF; Ahddub 10 200935290 mobile device, The power supply should be minimized. Although it is not possible to recognize multiple touches in the conventional resistive touch screen, according to the present invention, it is possible to provide a touch screen capable of recognizing multiple touches while maintaining all the advantages of the conventional control screen. In addition, the resistive medium has a plurality of lines (each having a small width and exhibiting a line resistance characteristic), and does not require coordinate correction due to the thin layer resistance characteristics of the conventional electronically controlled screen. Although the drawings have been disclosed for the purpose of illustration. It will be appreciated by those skilled in the art that modifications, additions and substitutions may be made without departing from the scope and spirit of the invention as set forth in the appended claims. [Description] of a conventional resistive touch screen; [Fig. 2] is a diagram for explaining a resistive touch screen capable of recognizing multiple touches according to the present invention; [Fig. 3] Fig. 2 [4a and 4b] is a display diagram for explaining problems in forming a closed loop in the present invention; and [Fig. 5(a) to 5(c)] is a circuit diagram model, jade is used for explanation Structure to solve the problem when forming a closed loop. [Main component symbol description] 10~Insulating film; 20~low transparent film; 20a~Indium tin oxide resistive film; 5l51-i〇257-PF; Ahddub 11 200935290 20b~Y axis Electrode; 3 0~ upper transparent film; 30a~ indium oxide Tin resistive film; 30b~X-axis electrode; 1 0 0~ insulating film; 200~low transparent film; 200a~Y axis transparent resistance detecting pattern; 200b~Y axis electrode; 300~up transparent film; 300a~X axis transparent resistor Detection pattern; 300b to X-axis electrodes; A, B, C, D, E, F, and G~ points; H, I, J, K, L, M, N, and 0~ points.
5151-10257-PF;Ahddub 125151-10257-PF; Ahddub 12