201214254 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種觸控面板，尤指一種單層單邊之電 容式觸控面板裝置。 【先前技術】 電容式觸控面板應用領域廣泛，主要應用於消費性電 子產品如PDA、掌上型電腦、電子字典、行動電話、web pad、電子書、Tablet PC、數位像機、自助點餐系統、存貨 管理盤點機、POS結帳機、信用卡POS簽名機、醫療監控 系統等。 電阻式觸控面板主要由上下兩組氧化姻錫（Indium Tin Oxide，ITO)導電層疊合而成，使用時利用壓力使上下電極 導通，經由控制器測知面板電壓變化而計算出接觸點位置 進行輪入。當使用者在觸摸螢幕上的某一點時，電流通過 導通而作動，此時電腦會計算該作動點的位置，而驅動程 式會將此作動翻譯成系統能了解的語言。201214254 VI. Description of the Invention: [Technical Field] The present invention relates to a touch panel, and more particularly to a single-layer, single-sided capacitive touch panel device. [Prior Art] Capacitive touch panels are widely used in consumer electronics such as PDAs, palmtop computers, electronic dictionaries, mobile phones, web pads, e-books, Tablet PCs, digital cameras, and self-service ordering systems. , inventory management inventory machine, POS checkout machine, credit card POS signature machine, medical monitoring system, etc. The resistive touch panel is mainly composed of two layers of indium tin oxide (ITO) which are electrically conductively laminated, and the upper and lower electrodes are electrically connected by using the pressure, and the position of the contact point is calculated by detecting the change of the panel voltage through the controller. Turn in. When the user touches a certain point on the screen, the current is actuated by turning on. At this time, the computer calculates the position of the action point, and the driver translates the action into a language that the system can understand.
單層電容式觸控面板配置方式主要為將導電層兩端連 接至偵測電路以量測導電層上的電流、電壓變化，例如美 國專利案號US 6,961,049 “CAPACTIVE TOUCH SENSOR ARCHITECTURE WITH UNIQUE SENSOR BAR ADDRESSING “ 、以及 US 7,735,383 “BALANCED RESISTANCE CAPACITIVE SENSING APPARATUS”所揭 露。然而，此種配置方式需於基板兩側設置連接線路，且 201214254 =旦響Γ面板整體的錢，對於產品的料，係造成不 小的…側邊的走線會影響位置的判斷造成誤差。 【發明内容】 有鑑於此，本發明提供一種單層單邊電容式觸控 裝置，僅需於單邊設置連接線路，另外三邊不需配置。由 此’另外三邊可採無框設計，以簡化觸控面板之配置。 為達成上述㈣’本發明之單層單邊電容式觸控面板 、，包括·-基板’具有—表面及相對之第_側邊及第 二側邊；複數導電線，其分別具有一等效電阻值及一等效 電容值，該等複數導電線係並列設置並貼合於該基板之表 面上’而由該基板之第—側邊延伸至第二側邊，每一導電 線具有-接近該第二側邊之—連接端；以及―觸控偵測電 路，其係經由-連接線路電性連接至該複數導電線之連接 端’以偵測該複數導電條之該等效電阻值及該等效電容值 之變化而判定於該基板上之至少一碰觸位置。 其中，該觸控偵測電路可包括：一多工選擇器，其係 電性連接至該等複數導電線；—第—開關，其係電性連接 至該多工選擇器電阻，其具有一第一電阻值；一第二 開關，其係電性連接至該電阻、及該第一開關；一電容y 其具有-電容值，，玄電容係電性連接至該第一開關、及該 第二開關；一第三開關，其係電性連接至該電容；一類比 數位轉換n ’其係、電性連接至—微控制器；—第四開關， 201214254 其係包性連接至該類比數位轉換器、及該第三開關；以及 積刀電路其係電性連接至該第二開關、及該第四開關。 較佳地，5玄等複數導電線係由氧化姻錫（⑽⑽Tin Oxide’ 1了〇)材g所製成。該基板係為—矩形結構。該連接 線路係為—軟性電路板(FlexibU PHnted Ci⑽it，FPC)。 【實施方式】 °月併參考圖1 (a)，其係本發明一較佳實施例之示意 圖。如圖所不，本發明之單層單邊電容式觸控面板裝置卜 匕括.基板1 0、複數導電線100、及一觸控偵測電路Η。 該等複數導電線1 〇〇係並列設置、貼合於基板丨〇上’並通過 一連接線路19電性連接至觸控偵測電路丨丨。較佳地，本發 明導電線100係由氧化銦錫（Indium τ丨n 〇xide，IT〇)材質所 製成’該連接線路19係為一軟性電路板（Flexible Printed Circuit, FPC)。 本發明之基板1 〇較佳地係為一矩形結構，並具相對之 第一側邊10a及第二側邊i〇b。複數導電線1〇〇係由基板1〇之 第一側邊l〇a延伸至第二側邊1 〇b，為方便說明，本實施例 以十條導電線101〜H0為例，每一導電線1〇1〜11〇具有一接 近該第二側邊1 〇b之連接端1 〇 1 b〜11 Ob。觸控偵測電路1 1係 經由連接線路19電性連接至導電線101〜11〇之連接端 101 b〜1 1 〇b，以偵測該複數導電線1 〇〇之電性變化而判定於 基板10上之至少一接觸點A。 201214254 本發明之主要特徵在於：導電線100係並列設置於基板 10上’並僅透過單邊連接端1 〇 1 b〜11 〇b與連接線路19、觸控 偵測電路11連接。除了圖1(a)所提供之橫式配置方式之外， 本發明亦可採取直式之配置方式，其示意圖如圖1(b)所示； 或者，可採用橫式配置方式，但連接線路丨9由底端連接至 觸控偵測電路1 1，其示意圖如圖丨（c)所示。 本實施例試舉一例說明本發明如何偵測碰觸位置。請 參考圖2，其係本發明一較佳實施例之系統架構圖。如圖所 示，本發明之觸控偵測電路1 ]包括：一多工選擇器1 2、_ 第一開關131、一第二開關132、一第三開關133 '一第四開 關134、一電容1 5、一電阻1 6、一類比數位轉換器I 7、一積 分電路18、及一微控制器14。 其中，多工選擇器12係通過連接線路19電性連接至該 等導電線101〜110。第一開關131之第一端3係電性連接至多x 工選擇器12，第二端b係連接至第二開關132之第二，第 三端c係連接至電容15。第二開關132之第一端3係電性連接 至電阻16及積分電路18，第二端b係連接至第一開關13丨之 第二端b，第三端c係連接至電容μ。第三開關丨33之第一端 a係電性連接至電容15及第一開關131的第三端^^，第二端^ 係連接至一直流電源V，第三端c係連接至第四開關134的第 二端b。第四開關134之第一端3係連接至類比數位轉換器 17,第二端b係連接至第三開關丨33的第三端(：，第三端^則 連接至積分電路1 8。 201214254 電阻16具有一電阻值R，電容15具有一電容值c。該等 複數導電線係分別具有一等效電阻值及一等效電容值。為 方便說明，本實施例以導電線1〇8為例，當使用者以手指觸 碰導電線108之觸控點戍時，該導電線之等效電阻值為r，， 等效電容值為c，，其等效電路如圖3所示。 多工選擇器12係依次導電線101〜110 ,故每條導電線 101〜1 10均通過相同之方式量測等效電阻值及等效電容 值。：多工選擇器12掃描至導電線1〇8時，第三開關133的 第一端a係切換至第二端b以連接直流電源v與電容1 $，第二 開關132的第一端a係切換至第三端c以連接電容丨5與電阻 16’此時，該直流電源v係對電容15進行充電其等效電路 則如圖4所示。待充電週期完成後，第三開關133的第一端& 係切換至第二端c，第四開關134的第一端丑係切換至第二端 b，以使類比數位轉換器17電性連接至電容^而讀取充電後 之電壓值VI ’並將積分電路18歸零。 接著，第一開關丨3 1的第一端a係切換至第三端c，第二 _ 1關32的第％ a亦切換至第三端c，以使電容15對導電線 進行充電積分電路1 8開始累加流經電阻16之電流的平 方值’其等效電路則如圖5所示。 而後，第一開關131與第二開關132同時動作，第一開 關131的第一端樣切換至第二端b，第二開關132的第一端a 亦切換至第二端b’以致使該導電線1G8進行放電，其等效 電路如圖6所示。積分電路18係繼續累加流經電_之電流 的平方值。第一開關13 1、第二開關132係再次切換至電容 201214254 行充電、及導電線1 〇8 累加流經電阻丨6之電 15多數次，以使電容丨5對導電線〗〇8進 本身放電多數次，積分電路18並持續 流的平方值。 最後積刀電路18停止記錄流經電阻】6的電流的平方 值’其所得到的總電流平方值為I2。第二_132的第-端 :切換至苐三端c’第三開關⑴的第一端a切換至第三端c， η第四開關134的第-端a切換至第二端b，以使類比數位轉換 器1 7連接至電谷15而讀取電容！ 5放電後的電屋值^2。 °亥類比數位轉換11丨7將第-電壓值VI、第二電塵值 及總電流!2傳送至微控制器丨斗，根據能量守恆原理與 電荷不滅原理，可計算出導電線⑽之等效電容值C，及等效 電阻值R’，其計算公式為： r-_rrVl-V2x 1 一’（電荷不滅定律） RV 丄rvVl2-V22、^ —2 Μ ϊ2 )- R，（能量守恆定律） 由於使用者以手指接觸導電線1〇8，將使得導電線丨〇8之等 效電容值c’增加，與相較於其他導電線1〇〇，電線1〇8之等 效電容值C’將明顯提高，配合内插法計算可以準確的取得 垂直軸的座標，由此，微控制器14可判斷接觸點八係位於導 電線108上。其次，等效電阻值R，係和接觸點八與連接端ϊ 〇8b 之距離成正比，因此，通過比例關係，可計算出接觸點A 在導電線108上之水平座標位置。是故，通過讀取第一電壓 值VI、第二電壓值V2、及電流的p，微控制器丨4便可得知 接觸點A在基板1 〇上之平面座標位置。 201214254 本發明所 而非僅限 上述實施例僅係為了方便說明而舉例而已 主張之權利範圍自應以申請專利範圍所述為準 於上述貫施例。 【圖式簡單說明】 圖1(a)係本發明一較佳實施例之第一示意圖。 圖1(b)係本發明一較佳實施例之第二示意圖。 圖1(c)係本發明一較佳實施例之第三示意圖。 圖2係本發明一較佳實施例之系統架構圖。 圖3係本發明一較佳實施例之第一等效電路圖。 圖4係本發明一較佳實施例之第二等效電路圖。 圖5係本發明一較佳實施例之第三等效電路圖。 圖6係本發明一較佳實施例之第四等效電路圖。 【主要元件符號說明】 1 單層單邊電容式觸11 控面板裝置 觸控偵測電路 10 基板 12 多工選擇器 131 第一開關 132 第二開關 133 第三開關 134 第四開關 14 微控制器 15 電容 16 電阻 17 類比數位轉換器 18 積分電路 100， 101〜110 導電線 201214254 c，c’ 電容值 R，R， 電阻值 V 直流電源 101b〜1 10b連接端 VI,V2 電壓值 I 電流值 A 接觸點 a 第一端 b 第二端 c 第三端 10a 第一側邊 10b 第二側邊The single-layer capacitive touch panel is mainly configured to connect the two ends of the conductive layer to the detecting circuit to measure the current and voltage changes on the conductive layer. For example, US Patent No. US 6,961,049 “CAPACTIVE TOUCH SENSOR ARCHITECTURE WITH UNIQUE SENSOR BAR ADDRESSING ", and US 7,735,383 "BALANCED RESISTANCE CAPACITIVE SENSING APPARATUS" is disclosed. However, this type of configuration requires connection lines on both sides of the substrate, and 201214254 = the total amount of money on the panel, which is not small for the material of the product... The side traces will affect the position judgment and cause errors. SUMMARY OF THE INVENTION In view of this, the present invention provides a single-layer single-sided capacitive touch device, which only needs to be provided with a connection line on one side, and the other three sides do not need to be configured. Therefore, the other three sides can be frameless to simplify the configuration of the touch panel. In order to achieve the above (4) 'single-layer single-sided capacitive touch panel of the present invention, the substrate includes: a surface and an opposite first side and a second side; and a plurality of conductive lines each having an equivalent a resistance value and an equivalent capacitance value, the plurality of conductive lines are juxtaposed and attached to the surface of the substrate and extend from the first side to the second side of the substrate, each conductive line having a - close a second side of the connection end; and a touch detection circuit electrically connected to the connection end of the plurality of conductive lines via a connection line to detect the equivalent resistance value of the plurality of conductive strips The change in the equivalent capacitance value determines at least one touch position on the substrate. The touch detection circuit may include: a multiplexer electrically connected to the plurality of conductive lines; a first switch electrically connected to the multiplexer resistor, having a a first resistance value; a second switch electrically connected to the resistor and the first switch; a capacitor y having a capacitance value, wherein the capacitor is electrically connected to the first switch, and the first a second switch, which is electrically connected to the capacitor; an analog-to-digital conversion n' is electrically connected to the -microcontroller; - the fourth switch, 201214254 is tied to the analogous digit The converter and the third switch; and the integrated circuit are electrically connected to the second switch and the fourth switch. Preferably, the plurality of conductive wires of 5 ft. are made of oxidized agglomerated tin ((10) (10) Tin Oxide'). The substrate is a rectangular structure. The connection line is a flexible circuit board (FlexibU PHnted Ci(10)it, FPC). [Embodiment] Fig. 1 (a) is a schematic view of a preferred embodiment of the present invention. As shown in the figure, the single-layer single-sided capacitive touch panel device of the present invention includes a substrate 10, a plurality of conductive lines 100, and a touch detection circuit. The plurality of conductive wires 1 are arranged side by side and attached to the substrate ’ and electrically connected to the touch detection circuit 通过 through a connection line 19 . Preferably, the conductive line 100 of the present invention is made of indium tin oxide (ITO) material. The connecting line 19 is a flexible printed circuit (FPC). The substrate 1 of the present invention is preferably a rectangular structure having opposite first side edges 10a and second side edges i〇b. The plurality of conductive lines 1 延伸 extend from the first side 10a of the substrate 1 to the second side 1 〇 b. For convenience of description, the present embodiment takes ten conductive lines 101 to H0 as an example, and each conductive line 1〇1~11〇 has a connection end 1 〇1 b~11 Ob close to the second side 1 〇b. The touch detection circuit 11 is electrically connected to the connection ends 101 b 1 1 1 〇 b of the conductive lines 101 to 11 through the connection line 19 to detect the electrical change of the plurality of conductive lines 1 而At least one contact point A on the substrate 10. 201214254 The main feature of the present invention is that the conductive wires 100 are arranged side by side on the substrate 10 and are connected to the connection line 19 and the touch detection circuit 11 only through the one-side connection terminals 1 〇 1 b to 11 〇b. In addition to the horizontal configuration provided in FIG. 1(a), the present invention may also adopt a straight configuration, which is shown in FIG. 1(b); or a horizontal configuration, but a connection line The 丨9 is connected from the bottom end to the touch detection circuit 1 1, and its schematic diagram is as shown in (c). This embodiment attempts to illustrate an example of how the present invention detects a touch position. Please refer to FIG. 2, which is a system architecture diagram of a preferred embodiment of the present invention. As shown in the figure, the touch detection circuit 1 of the present invention includes: a multiplexer switch 2, a first switch 131, a second switch 132, a third switch 133', a fourth switch 134, and a A capacitor 15 , a resistor 16 , an analog converter I 7 , an integrating circuit 18 , and a microcontroller 14 . The multiplexer 12 is electrically connected to the conductive lines 101 to 110 through the connection line 19. The first end 3 of the first switch 131 is electrically connected to the multi-x selector 12, the second end b is connected to the second of the second switch 132, and the third end c is connected to the capacitor 15. The first end 3 of the second switch 132 is electrically connected to the resistor 16 and the integrating circuit 18, the second end b is connected to the second end b of the first switch 13A, and the third end c is connected to the capacitor μ. The first end a of the third switch 丨33 is electrically connected to the capacitor 15 and the third end of the first switch 131, the second end is connected to the DC power supply V, and the third end c is connected to the fourth end. The second end b of the switch 134. The first end 3 of the fourth switch 134 is connected to the analog digital converter 17, and the second end b is connected to the third end of the third switch 丨33 (:, the third end is connected to the integrating circuit 18.) 201214254 The resistor 16 has a resistance value R, and the capacitor 15 has a capacitance value c. The plurality of conductive lines each have an equivalent resistance value and an equivalent capacitance value. For convenience of description, the conductive line 1 〇 8 is used in this embodiment. For example, when the user touches the touch point of the conductive line 108 with a finger, the equivalent resistance value of the conductive line is r, and the equivalent capacitance value is c, and the equivalent circuit thereof is shown in FIG. 3. The work selector 12 is sequentially electrically conductive lines 101 to 110, so each of the conductive lines 101 to 110 measures the equivalent resistance value and the equivalent capacitance value in the same manner. The multiplexer 12 scans to the conductive line 1〇. At 8 o'clock, the first end a of the third switch 133 is switched to the second end b to connect the DC power source v and the capacitor 1 $, and the first end a of the second switch 132 is switched to the third end c to connect the capacitor 丨 5 At this time, the DC power supply v charges the capacitor 15 and its equivalent circuit is as shown in FIG. 4. The charging cycle is completed. After that, the first end & of the third switch 133 is switched to the second end c, and the first end of the fourth switch 134 is switched to the second end b so that the analog digital converter 17 is electrically connected to the capacitor ^ The charged voltage value VI ' is read and the integration circuit 18 is reset to zero. Then, the first end a of the first switch 丨 3 1 is switched to the third end c, and the second % of the second _ 1 off 32 is also Switching to the third terminal c, so that the capacitor 15 charges the conductive line, the integration circuit 18 starts to accumulate the square value of the current flowing through the resistor 16 'the equivalent circuit is as shown in FIG. 5. Then, the first switch 131 and The second switch 132 is simultaneously operated, the first end of the first switch 131 is switched to the second end b, and the first end a of the second switch 132 is also switched to the second end b' to cause the conductive line 1G8 to discharge. The equivalent circuit is shown in Fig. 6. The integrating circuit 18 continues to accumulate the square value of the current flowing through the electric current. The first switch 13 1 and the second switch 132 are switched again to the capacitor 201214254 for charging, and the conductive line 1 〇 8 Accumulating the electricity 15 flowing through the resistor 多数6 a plurality of times, so that the capacitor 丨5 discharges the conductive line 多数8 into itself many times, The integration circuit 18 continues the square of the flow. Finally, the integrated circuit circuit 18 stops recording the squared value of the current flowing through the resistor -6, and the resulting total current squared value is I2. The second end of the second _132: switches to The first end a of the third end c' third switch (1) is switched to the third end c, and the first end a of the fourth fourth switch 134 is switched to the second end b to connect the analog digital converter 17 to the electric valley 15 and read the capacitor! 5 The electric house value after discharge ^2. °Hai analog digital conversion 11丨7 will send the first voltage value VI, the second electric dust value and the total current! 2 to the microcontroller bucket, according to The principle of energy conservation and the principle of charge extinction can calculate the equivalent capacitance value C of the conductive line (10) and the equivalent resistance value R'. The calculation formula is: r-_rrVl-V2x 1 a '(charge incomplete law) RV 丄rvVl2 -V22, ^ -2 Μ ϊ2 )- R, (energy conservation law) Since the user touches the conductive line 1〇8 with a finger, the equivalent capacitance value c' of the conductive line 增加8 is increased, compared with other When the conductive line is 1〇〇, the equivalent capacitance value C' of the wire 1〇8 will be significantly improved, and the calculation can be accurately obtained by interpolation calculation. Coordinate axis, thereby, the microcontroller 14 can determine the contact point is located on the guide wire eight lines 108. Secondly, the equivalent resistance value R is proportional to the distance between the contact point VIII and the connection terminal ϊ 8b. Therefore, by the proportional relationship, the horizontal coordinate position of the contact point A on the conductive line 108 can be calculated. Therefore, by reading the first voltage value VI, the second voltage value V2, and the current p, the microcontroller 丨4 can know the position of the plane of the contact point A on the substrate 1 〇. The present invention is not limited to the above-described embodiments, but is intended to be illustrative only and the scope of the claims is intended to be within the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 (a) is a first schematic view of a preferred embodiment of the present invention. Figure 1 (b) is a second schematic view of a preferred embodiment of the present invention. Figure 1 (c) is a third schematic view of a preferred embodiment of the present invention. 2 is a system architecture diagram of a preferred embodiment of the present invention. 3 is a first equivalent circuit diagram of a preferred embodiment of the present invention. 4 is a second equivalent circuit diagram of a preferred embodiment of the present invention. Figure 5 is a third equivalent circuit diagram of a preferred embodiment of the present invention. Figure 6 is a fourth equivalent circuit diagram of a preferred embodiment of the present invention. [Main component symbol description] 1 Single-layer single-sided capacitive touch 11 Control panel device touch detection circuit 10 Substrate 12 Multiplexer 131 First switch 132 Second switch 133 Third switch 134 Fourth switch 14 Microcontroller 15 Capacitor 16 Resistor 17 Analog-to-digital converter 18 Integral circuit 100, 101~110 Conductor 201214254 c,c' Capacitance value R, R, resistance value V DC power supply 101b~1 10b connection terminal VI, V2 voltage value I current value A Contact point a first end b second end c third end 10a first side 10b second side