M406772 五、新型說明： 【新型所屬之技術領域】 本創作係關於一種觸控面板的等效電位調整結構，尤 指—種有效縮小觸控面板上阻抗補償措施所佔用面積的相 關技術。 【先前技術】 I 目前市場上佔有率較高的觸控面板，以工作原理區分 计有電阻式及電容式兩種；其中，電阻式觸控面板包四線 式與五線式、六線或八線式；電容式則分為表面電容式 (SCT)與投射電容式（PCT)。又就感測訊號的形式區分，投 射電容式觸控面板被視為一種數位式觸控技術，電阻式與 表面電容式觸控面板則稱為一種類比式觸控技術。 以類比式觸控面板為例，都必須在一基板表面形成透 明電極’並在透明電極的四個邊上分別設置電阻性元件， I 而在透明電極上圍成一動作區（active region)，當在該等 電阻性元件上施加電壓後，將在動作區内產生一等效電位 ;但該等電阻性元件的阻抗與其和基板邊緣的距離成正比 ，距離基板邊緣距離愈小，阻抗愈小，而電阻性元件的中 央位置則阻抗最大，由於該等阻抗差異，因而無法在動作 區内形成均勻的等效電位，從而影響座標判斷的正確性。 為解決前述問題，改變電阻性元件圖案及加入阻抗補 償措施等因應方案乃應運而±，如我國發明專利權第 1246025號「具電壓補償的電阻式觸控面板」發明申請案 3 M406772 ’如圖4所示，其包含： 一矩形基底510 ; 一等電阻表面（uniform resistive surface)520，係平 均塗布於前述矩形基底510上； 複數個電阻性元件530，是分別形成在前述等電阻表 面520的四周邊緣； - 複數個補償元件540，是間隔地分別形成在前述等電 阻表面520的四周邊緣且位於各電阻性元件530的内側； 其中， 前述複數個補償元件540的尺寸與等電阻表面52〇的 邊緣距離成正比，且補償元件540之間的間隔與等電阻表 面520的邊緣距離成反比；亦即該等補償元件54〇的尺寸 在等電阻表面520的兩邊是較小的形狀，在等電阻表面 52〇的中間則是較大的形狀，且相鄰補償元件540之間的 間隔則是在等電阻表面520的兩邊位置是較寬的間距，在 等電阻表面520的中間位置是較窄的間距； ‘藉此，當電壓施加在各電阻性元件53〇時，可以在等 .電阻表面52G上產生-矩形電場（e|eGtrica旧丨…；而利用 該阻抗補償措施可使前述矩形電場具有均句的等效電位分 佈。 儘管前述阻抗補償措施可使觸控面板的矩形電場 均句的等效電位分佈，但一潛在問題仍持續地被關注，、M406772 V. New Description: [New Technology Field] This creation is about the equivalent potential adjustment structure of a touch panel, especially the related technology that effectively reduces the area occupied by the impedance compensation measures on the touch panel. [Prior Art] I Currently, the touch panel with a high market share has two types of resistive and capacitive types. The resistive touch panel is available in four-wire and five-wire or six-wire or Eight-wire type; capacitive type is divided into surface capacitance type (SCT) and projected capacitance type (PCT). In addition, in the form of sensing signals, the projected capacitive touch panel is regarded as a digital touch technology, and the resistive and surface capacitive touch panels are referred to as an analog touch technology. Taking an analog touch panel as an example, it is necessary to form a transparent electrode on a substrate surface and to provide a resistive element on each of the four sides of the transparent electrode, and to form an active region on the transparent electrode. When a voltage is applied to the resistive elements, an equivalent potential is generated in the active region; but the impedance of the resistive elements is proportional to the distance from the edge of the substrate, and the smaller the distance from the edge of the substrate, the smaller the impedance However, the central position of the resistive element has the largest impedance. Due to the difference in impedance, a uniform equivalent potential cannot be formed in the action region, thereby affecting the correctness of the coordinate determination. In order to solve the above problems, the corresponding scheme for changing the pattern of the resistive element and adding the impedance compensation measure is to be carried out. For example, the invention patent No. 1246025 of the invention patent application "resistance touch panel with voltage compensation" 3 M406772" 4, comprising: a rectangular substrate 510; a uniform resistive surface 520, which is applied on the rectangular substrate 510 on average; a plurality of resistive elements 530 formed on the resistive surface 520, respectively. a plurality of compensating elements 540 are formed at intervals around the periphery of the resistive surface 520 and on the inner side of each of the resistive elements 530; wherein the size of the plurality of compensating elements 540 and the equal-resistance surface 52〇 The edge distance is proportional, and the spacing between the compensating elements 540 is inversely proportional to the edge distance of the isotropic surface 520; that is, the dimensions of the compensating elements 54A are smaller on both sides of the isoelectric surface 520, etc. The middle of the resistive surface 52 is a larger shape, and the spacing between adjacent compensating elements 540 is at the equal resistive surface 520. The two sides are at a wider pitch, and the intermediate position of the equal-resistance surface 520 is a narrower pitch; 'But, when a voltage is applied to each of the resistive elements 53 ,, a rectangular shape can be generated on the equal-resistance surface 52G. The electric field (e|eGtrica old...) and the impedance compensation measure can make the rectangular electric field have the equivalent potential distribution of the uniform sentence. Although the foregoing impedance compensation measure can make the equivalent potential distribution of the rectangular electric field of the touch panel uniform, But a potential problem continues to be noticed,
即前述阻抗補償措施在等電阻表面(透明電極)上佔用的面 積’將直接影響觸動面板的動作F 嫂址， 町動作區大小：由於前述阻抗補 償措施必須在透明電極上形成特殊圖案的電阻性元件，且 4 UO//2 進 -步在電阻性元件内側而鄰近動作區的位置製作 ，因此佔用了透明電極各邊上的傷大面積，而直接影響 作區的大小；當觸控面板尺寸大時，佔用面積比相對較 、’佔影響相對較小，若是觸控面板的尺寸小時，則佔用 面積比必然提高，對於觸控面板動作區大小的影 顯著的。 t疋蚀马That is, the area occupied by the impedance compensation measure on the equal-resistance surface (transparent electrode) will directly affect the action F address of the touch panel. The size of the action area: due to the aforementioned impedance compensation measures, a special pattern of resistivity must be formed on the transparent electrode. The component, and 4 UO//2 step-by-step is made inside the resistive element and adjacent to the position of the action area, thus occupying a large area on each side of the transparent electrode, directly affecting the size of the area; when the touch panel size When the time is large, the occupied area ratio is relatively small, and the impact is relatively small. If the size of the touch panel is small, the occupied area ratio is inevitably increased, which is significant for the size of the touch panel action area. t疋 马 horse
由上述可知，觸控面板為使動作區内具有均勻的等效 電位分佈，必須採取阻抗補償構造，.但阻抗補償構造影響 動作區大小的問題仍須面對’並應積極尋求可行的解決方 【新型内容】 因此本創作主要目的在提供一種觸控面板的等效電位 調整結構，其可令觸控面板的動作區内具有均勻的等效電 位分佈，且可大幅縮小佔用面積，解決動作區面積受影響 的問題。 為達成前述目的採用的主要技術手段係令前述觸控面 板的等效電位調整結構包括有： 一基板’係呈矩形且透明狀； 一透明電極（ιτο)，係形成於前述基板的表面，又透明 電極具有四個邊緣； 複數導線’具有阻抗’而分別形成於透明電極的四個 邊緣上； 複數金屬線段’分別形成透明電極的各邊，其位於前 述導線的内側並與導線平行； 5 M406772 • 複數間隙，係分別形成於透明電極的各邊上且位於各 導線與相對位置上的金屬線段之間；各相鄰間隙之間分別 形成一阻抗補償部，該阻抗補償部分別與對應位置上的導 線及金屬線段構成電性連接； 本創作利用調整前述各相鄰間隙的間距或寬度，可分 別構成不同阻值的阻抗補償部，從而等同於使各導線在不 同位置上分別連接不同阻抗的補償電阻，藉以在由各金屬 線段於透明電極上所圍成區域内形成一等效電位；由於前 w 述具阻抗導線之線寬遠小於傳統觸控面板上以特定圖案電 極構成的電阻性元件，再配合利用相鄰間隙構成阻抗補償 部的方式，可有效縮小阻抗補償措施在觸控面板上佔用的 面積，且尤其適用在小尺寸的觸控面板上。 本創作又一目的在提供一種可防止干擾的觸控面板， 為達成前述目的採取的主要技術手段係令前述基板表面具 有一佈線區’該佈線區涵蓋透明電極上的導線、阻抗補償 部及金屬線段；而佈線區上依序覆設有： · 一下隔離層，係形成在佈線區上，以覆設其上的導線 、阻抗補償部及金屬線段，並絕緣地隔離佈線區内的導線 、阻抗補償部及金屬線段； 一抗干擾層，具備導電性，係覆設於前述下隔離層上 > 利用在前述佈線區上覆設下隔離層、抗干擾層的技術 ，可有效隔離佈線區上所設導線、阻抗補償部及金屬線段 ，進而達到干擾防制之目的。 6 M406772 【實施方式】 關於本創作之第一較佳實施例，請參閱圖1所示，主 要是在一矩形且透明的基板1Q表面形成有一透明電極 (ΙΤΟ)1〇〇，又透明電極1〇〇的四個邊緣上分別形成有一導 線11，各導線11兩端係相互連接，且在連接處（透明電極 1〇〇角落處）形成有一端阻元件101，該端阻元件1〇1係由 透明電極100的部分所構成；又基板1〇表面在相鄰透明電 極100的兩側端及下端處分別形成有一訊號線1〇2，各訊 ‘ 號線102的一端分別與前述端阻元件101連接，另端則與 形成有基板10表面下端的接點彳03連接； 又請配合參閱圖2所示，該透明電極彳〇〇在鄰近四個 邊緣處分別形成有複數金屬線段14，各金屬線段14係與 相對位置上的導線1 j平行，各金屬線段14各自獨立不相 連接；再者，該透明電極100的各導線彳1的内側及相對的 金屬線段14之間分別形成複數個間隙12，該等間隙12可 利用姓刻方式形成在透明電極100上，由於透明電極1 〇〇 的各邊在導線11與金屬線段14分別形成複數間隙12，相 -鄰間隙12之間未被去除的透明電極則分別形成一阻抗 補償邛1 3，各阻抗補償部彳3係分別與對應位置上的導線 11及金屬線段14電性連接，至於阻抗補償部13的電阻值 則與其面積大小有關，面積愈大阻值愈高，換言之，本創 作可通過改變各間隙12的間距，以調整其間所形成阻抗補 償部13的面積，進而調整其電阻值。 在前述實施财，本創作係透過調整各相鄰間隙12的 距離或長度，以調整其間所形成阻抗補償部13的電阻值； 7 M406772 除前述實施例以外，可進一步調整間隙12本身的寬度，亦 即離透明電極1 〇〇邊緣愈近的間隙12寬度愈小，離透明 電極1 00邊緣愈遠的間隙12寬度愈大，從而使相鄰間隙 12間形成的阻抗補償部13具有不同的電阻值。 又本實施例中，前述導線1彳及金屬線段14是以銀漿 透過網版印刷或其他技術形成在透明電極1〇〇上，在本實 施例中，該導線11及金屬線段14的寬度為25um，其利 用較細的線寬，使導線11上形成線阻抗，藉此利於在透明 電極1 00上形成電場；而極細線寬除了上述效果外，亦相 對縮小佔用面積’主要係因該導線11、金屬線段14的線 寬與傳統觸控面板所形成電極的寬度動辄3〇〇 um以上相較 ，存在極大的差距，故在透明電極1〇〇上佔用的面積相對 較小。再者，位於透明電極1 〇〇各個邊緣的金屬線段，4之 間係構成一動作區1 04。 再者’本創作的觸控面板是在透明電極1〇〇的四角落 分設端阻元件101，該等端阻元件1〇1並分別與透明電極 1 〇〇各邊緣上的導線11連接，與傳統觸控面板相同，導線 11上的阻抗與其相隔透明電極1〇〇邊緣的距離呈正比其 兩端離透明電極100邊緣較近，阻抗較低，其中央離透明 電極1 00邊緣較遠，故阻抗較高，由於該等阻抗差，造成 動作區的電場電位分佈不均勻，故須採取阻抗補償措施， 而本創作利用複數間隙12形成阻抗補償部13的方式以提 供前述阻抗補償措施，為補償導線11相對透明電極10〇 邊緣距離所造成的阻抗差，因而令離透明電極1⑽邊緣愈 近的間隙12相鄰間距愈大，使兩相鄰間隙12所構成的阻 8 M406772 . 抗補償部13電阻值愈大，離透明電極1 〇〇邊緣愈遠的間 隙12相鄰間距愈小，則兩相鄰間隙1 2所構成的阻抗補償 4 1 3電阻值愈小，藉此達成阻抗補償，從而使透明電極 1 〇〇上的動作區1 〇4構成一均勻的等效電位。除了利用阻 抗補償部1 3補償導線11線阻外’透過改變連接導線】， 的端阻元件101面積大小，亦可作微幅的阻抗調整。， 再請參閱圖3所示，係本創作又一較佳實施例的局部 • σ彳視圖’其揭示本創作進一步具有一防干擾措施，主要係 ^ 令前述基板1〇上具有一佈線區105，該佈線區105係涵 蓋透明電極1 〇〇各邊上的導線11、阻抗補償部1 3及金屬 線段14 ’並可進一步涵蓋透明電極1〇〇以外的基板1〇表 面°又本創作為達成防干擾目的，而佈線區1 〇5上依序覆 設有： 一下隔離層1 06，係形成在佈線區1 〇5上，以覆設其 上的導線11、阻抗補償部13及金屬線段14，甚至基板 1〇表面的端阻元件101及訊號線1〇2 ; 4 '- 一抗干擾層107’具備導電性，係覆設於前述下隔離 層1 06上； 利用在前述佈線區105上覆設下隔離層106、抗干擾 層1〇7的技術’可有效隔離佈線區105上所設導線11% 阻抗補償部1 3及金屬線段14，進而達到干擾防制之目的 。另前述抗干擾層107上可進一步覆設一上隔離層1〇8, 以便對該抗干擾層1 07構成絕緣隔離；而前述上、下隔離 層1 08,1 06係由絕緣油墨所構成。 利用前述構造除了可產生阻抗補償效果外，由於佔用 9 M406772 用面積，尤 步在基板的 並確保判讀 透明電極的面積小，故不影響動作區的有效作 其適用於小尺寸的觸控面板上。另本創作進— 佈線區上構成防干擾措施’可有效防止干擾， 訊號準確。 【圖式簡單說明】 圖1係本創作第一較佳實施例的平面圖。It can be seen from the above that the touch panel has a uniform equivalent potential distribution in the action region, and an impedance compensation structure must be adopted. However, the problem that the impedance compensation structure affects the size of the action region still needs to face 'and should actively seek a feasible solution. [New content] Therefore, the main purpose of the present invention is to provide an equivalent potential adjustment structure of a touch panel, which can have a uniform equivalent potential distribution in the action area of the touch panel, and can greatly reduce the occupied area and solve the action area. The area is affected by the problem. The main technical means for achieving the foregoing purpose is that the equivalent potential adjustment structure of the touch panel includes: a substrate 'behaves a rectangle and is transparent; a transparent electrode (ιτο) is formed on the surface of the substrate, and The transparent electrode has four edges; the plurality of wires 'have impedance' and are respectively formed on the four edges of the transparent electrode; the plurality of metal segments 'form each side of the transparent electrode, which is located inside the aforementioned wire and parallel to the wire; 5 M406772 The plurality of gaps are respectively formed on each side of the transparent electrode and located between the metal lines of the respective wires and the opposite positions; an impedance compensation portion is formed between each adjacent gap, and the impedance compensation portion is respectively corresponding to the position The wire and the metal wire segment constitute an electrical connection; the present invention can adjust the pitch or width of each adjacent gap to form an impedance compensation portion with different resistance values, which is equivalent to connecting the wires to different impedances at different positions. a compensation resistor for forming an area in a region surrounded by the respective metal segments on the transparent electrode Effective potential; since the line width of the impedance trace is much smaller than that of the conventional touch panel with a specific pattern electrode, and the use of the adjacent gap to form the impedance compensation portion, the impedance compensation measure can be effectively reduced. The area occupied by the touch panel, and is especially suitable for small-sized touch panels. Another object of the present invention is to provide a touch panel capable of preventing interference. The main technical means for achieving the foregoing purpose is to have a wiring area on the surface of the substrate. The wiring area covers the wires on the transparent electrode, the impedance compensation part and the metal. The line segment; and the wiring area is sequentially covered: · The isolation layer is formed on the wiring area to cover the wires, the impedance compensation portion and the metal line segment, and insulate the wires and impedance in the wiring region a compensation portion and a metal wire segment; an anti-interference layer having electrical conductivity and covering the lower isolation layer> by using a technique of covering the isolation layer and the anti-interference layer on the wiring region, the wiring region can be effectively isolated The wire, the impedance compensation part and the metal wire segment are arranged to achieve the purpose of interference prevention. 6 M406772 [Embodiment] With regard to the first preferred embodiment of the present invention, as shown in FIG. 1 , a transparent electrode (ΙΤΟ) 1 〇〇 and a transparent electrode 1 are mainly formed on the surface of a rectangular and transparent substrate 1Q. A wire 11 is formed on each of the four edges of the crucible, and the ends of the wires 11 are connected to each other, and a resistance element 101 is formed at the junction (the corner of the transparent electrode 1), and the end resistance element is 1〇1. The surface of the substrate 1 is formed with a signal line 1〇2 at the two sides and the lower end of the adjacent transparent electrode 100, and one end of each of the signal lines 102 and the end resistance element respectively 101 is connected, and the other end is connected to the contact point 形成03 formed with the lower end of the surface of the substrate 10; further, as shown in FIG. 2, the transparent electrode 形成 is formed with a plurality of metal line segments 14 adjacent to the four edges, respectively. The metal wire segments 14 are parallel to the wires 1 j at the opposite positions, and the metal wire segments 14 are not independently connected to each other; further, a plurality of the inner sides of the wires 彳 1 of the transparent electrode 100 and the opposite metal wire segments 14 are respectively formed. The gap 12, the gaps 12 can be formed on the transparent electrode 100 by the last name. Since the sides of the transparent electrode 1 形成 form a plurality of gaps 12 between the wires 11 and the metal segments 14, respectively, the phase-to-interleave gap 12 is not The removed transparent electrodes respectively form an impedance compensation 邛1, and each of the impedance compensation units 电3 is electrically connected to the wires 11 and the metal segments 14 at corresponding positions, respectively, and the resistance value of the impedance compensation portion 13 is related to the size of the area. The larger the area, the higher the resistance value. In other words, the creation can adjust the area of the impedance compensating portion 13 formed therebetween by changing the pitch of each gap 12, thereby adjusting the resistance value. In the foregoing implementation, the present invention adjusts the resistance value of the impedance compensating portion 13 formed therebetween by adjusting the distance or length of each adjacent gap 12; 7 M406772 In addition to the foregoing embodiment, the width of the gap 12 itself can be further adjusted. That is, the closer the width of the gap 12 closer to the edge of the transparent electrode 1 is, the larger the width of the gap 12 farther from the edge of the transparent electrode 100 is, so that the impedance compensating portion 13 formed between the adjacent gaps 12 has different resistances. value. In this embodiment, the wire 1 and the wire segment 14 are formed on the transparent electrode 1 by silver paste through screen printing or other techniques. In the embodiment, the width of the wire 11 and the wire segment 14 is 25um, which utilizes a thinner line width to form a line impedance on the wire 11, thereby facilitating the formation of an electric field on the transparent electrode 100; and the ultra-fine line width, in addition to the above effects, also relatively reduces the occupied area' mainly due to the wire 11. The line width of the metal line segment 14 is larger than the width of the electrode formed by the conventional touch panel by more than 3 〇〇 um, so that the area occupied by the transparent electrode 1 相对 is relatively small. Furthermore, the metal line segments located at the respective edges of the transparent electrode 1 , form an action region 104 between the four. Furthermore, in the touch panel of the present invention, the end resistance elements 101 are respectively disposed at four corners of the transparent electrode 1 , and the end resistance elements 1 〇 1 are respectively connected to the wires 11 on the respective edges of the transparent electrode 1 ,. Similar to the conventional touch panel, the impedance on the wire 11 is proportional to the distance from the edge of the transparent electrode 1 其, and the two ends thereof are closer to the edge of the transparent electrode 100, the impedance is lower, and the center thereof is far from the edge of the transparent electrode 100. Therefore, the impedance is high. Because of the impedance difference, the electric field potential distribution in the action area is not uniform, so impedance compensation measures must be taken. However, the present invention uses the complex gap 12 to form the impedance compensation unit 13 to provide the aforementioned impedance compensation measure. The impedance difference caused by the distance between the edge of the transparent electrode 10 and the edge of the transparent electrode 10 is increased, so that the closer the gap 12 is closer to the edge of the transparent electrode 1 (10), the greater the gap between the adjacent gaps 12, the resistance of the two adjacent gaps 12 M406772. The larger the resistance value of 13 is, the smaller the adjacent spacing of the gap 12 from the edge of the transparent electrode 1 愈 is, the smaller the resistance of the two adjacent gaps 1 2 is, the smaller the resistance value is, thereby achieving the resistance. Compensation, so that the operation region on the transparent electrode 1 thousand and 1 equivalent 〇4 constituting a uniform potential. In addition to utilizing the impedance compensation portion 13 to compensate for the line resistance of the wire 11 and the size of the terminal resistance element 101 through the change of the connecting wire, a slight amplitude adjustment can be performed. Referring to FIG. 3, a partial σ彳 view of another preferred embodiment of the present invention discloses that the present invention further has an anti-interference measure, mainly for having a wiring area 105 on the substrate 1 The wiring area 105 covers the wires 11 on each side of the transparent electrode 1 , the impedance compensation portion 13 and the metal line segment 14 ′ and may further cover the surface of the substrate 1 other than the transparent electrode 1 ° For the purpose of anti-interference, the wiring area 1 〇 5 is sequentially covered: a lower isolation layer 106 is formed on the wiring area 1 〇 5 to cover the wire 11 , the impedance compensation part 13 and the metal line segment 14 Even the terminal resistance element 101 and the signal line 1〇2 on the surface of the substrate 1; 4'- an interference suppression layer 107' is electrically conductive and is overlaid on the lower isolation layer 106; The technique of covering the lower isolation layer 106 and the anti-interference layer 1〇7 can effectively isolate the 11% impedance compensation portion 13 and the metal line segment 14 provided on the wiring region 105, thereby achieving the purpose of interference prevention. Further, the anti-interference layer 107 may be further provided with an upper isolation layer 1 8 for insulating isolation of the anti-interference layer 107; and the upper and lower isolation layers 108, 106 are made of insulating ink. In addition to the impedance compensation effect, the above-mentioned configuration occupies an area of 9 M406772, and the step is on the substrate and ensures that the area of the transparent electrode is small, so that the effective action area is not affected, and it is suitable for a small-sized touch panel. . In addition, the creation of the creation - the interference prevention measures on the wiring area can effectively prevent interference and the signal is accurate. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a plan view showing a first preferred embodiment of the present invention.
圖2係本創作第一較佳實施例的局部放大平面圖。 圖3係本創作第二較佳實施例的剖視圖。 圖4係我國發明專利權第丨246〇25號的平面圖。 【主要元件符號說明】 1 〇基板 1 〇 1端阻元件 1〇3接點 105佈線區 1〇7抗干擾層 11導線 13阻抗補償部 510矩形基底 530電阻性元件 1 0 0透明電極 102訊號線 104動作區 1〇6下隔離層 108上隔離層 12間隙 14金屬線段 520等電阻表面 540補償元件Figure 2 is a partially enlarged plan view showing the first preferred embodiment of the present invention. Figure 3 is a cross-sectional view of a second preferred embodiment of the present invention. Figure 4 is a plan view of China's invention patent No. 246丨25. [Main component symbol description] 1 〇 substrate 1 〇 1 terminal resistance element 1 〇 3 contact 105 wiring area 1 抗 7 anti-interference layer 11 wire 13 impedance compensation portion 510 rectangular substrate 530 resistive element 1 0 0 transparent electrode 102 signal line 104 action area 1〇6 isolation layer 108 upper isolation layer 12 gap 14 metal line segment 520 and other resistive surface 540 compensation component