29 九、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，尤指一種低溫五線式窄 邊框電阻式觸控面板之設計。 【先前技術】 早期五線式的電阻式觸控面板概由兩層結構所組成， 如第五圖所不，其包含一導電玻璃基板（IT0 ( 4 Ο )及一设於該導電玻璃基板上的導電薄膜（IT〇Fiim)( 5 〇) ’該導電玻璃基板（40)之上表面係鍵上透明導電 層’且其四周係印刷有導線線路（4 1 );該導電薄膜（5 0 )之下表面也鍍上透明導電層並於四周印刷有銀線（5 1 )作為感應導通’於該兩層結構之間，尚有許多微細的 透月、、邑緣物，使該導電玻璃基板（4 ◦)肖導電薄膜（5 〇 )保持絕緣相隔，以確保在使用者未觸碰該面板時，兩 上下層結構不會導通而產生錯誤判讀。 請參考第四圖所示’前述五線式的觸控面板其工作方 式係由導電玻璃基板（4〇)的透明導電層同時負責X軸 (水平軸）及Y軸（垂直軸）方向的座標感應，於該導電玻璃 基板（40)四周導電線路（41)上，依χ軸與γ軸區 刀於X軸或Υ軸導電線路之—端加上一固定電壓（如五 伏特），另一端則為零伏特，使X軸/Υ軸之間構成的觸控 區形成均句的電壓分佈，而導電薄膜係僅做為感應觸碰點 的電壓值’經由晶片運算之後遂可得到該觸碰點其χ'γ 軸的座標值。 Γ360222 五線式的電阻式觸控面板的製程極為精密 勾性需較—般四線式的電阻式觸控面板高，故四周 ^ 則極易造成工作面的電壓分 佈不均句’使得實際觸碰點的座標位置判斷錯誤，甚至造 成觸控面板無法作冑’是以，一般五線式觸控面板均是採 I::製程二即利用攝& 5〇0度以上的高溫銀漿在玻璃基 U成-電阻相當低且均句的印刷導線，…能符 合五線式對電阻值的平均性要求，但由於玻璃在遭受外力 衝擊後會有破裂的可能’而小尺寸的觸控面板常應用於消 費性電子產品如手機、個人數位助理(pDA)等隨身攜帶之 物品，若不小心掉落即有可能使玻璃破裂而損壞。 【發明内容】 由上述說明可知，五線式觸控面板於製程中所使用的 導電玻璃基板在遭受外力衝擊後會有破裂的可能，而使其 所應用的電子產品損壞。 有鑑於此，本發明之主要目的係提供一種低溫五線式 窄邊框電阻式觸控面板之設計，係以一層導電薄膜與一層 塑膠基板貼合以取代導電玻璃基板，並在導電薄膜四周加 以钱刻補償之設計以達到抗摔效果且電阻平均而能形成均 勻電場。 欲達上述目的所使用之技術手段，係令該低溫五線式 窄邊框電阻式觸控面板之設計包含： 一塑膠基板； Γ360222 -下導電薄膜，係與該塑膠基板貼合，其表面鍍有一 透明導電層，且該表面四周邊緣形成有導線分佈區沿該 導線分佈區之側邊係形成複數不同長度大小之蝕刻區域； 了上導電薄膜，係設於該下導電薄膜上方，其表面鍍 有透明導電層，且圍繞該表面四周邊緣係形成有-封閉 狀的銀線。IX. Description of the Invention: [Technical Field] The present invention relates to a touch panel, and more particularly to a low-temperature five-wire narrow frame resistive touch panel. [Prior Art] The early five-wire resistive touch panel consists of a two-layer structure, as shown in the fifth figure, which comprises a conductive glass substrate (IT0 (4 Ο) and one on the conductive glass substrate). Conductive film (IT〇Fiim) (5 〇) 'The upper surface of the conductive glass substrate (40) is bonded with a transparent conductive layer' and printed with a wire line (4 1 ) around it; the conductive film (50) The lower surface is also plated with a transparent conductive layer and printed with a silver wire (5 1 ) as an inductive conduction between the two layers, and there are many fine moon-transparent and edge-like materials to make the conductive glass substrate. (4 ◦) Xiao conductive film (5 〇) is kept insulated to ensure that the two upper and lower layers are not turned on and misinterpreted when the user does not touch the panel. Please refer to the fourth line shown in the fourth figure. The touch panel is operated by a transparent conductive layer of a conductive glass substrate (4 〇) and is responsible for coordinate sensing in the X-axis (horizontal axis) and Y-axis (vertical axis) directions around the conductive glass substrate (40). On the conductive line (41), the y-axis and the γ-axis area are on the X Or a fixed voltage (such as five volts) is added to the end of the conductive line of the x-axis, and the other end is zero volt, so that the touch area formed between the X-axis and the x-axis forms a uniform voltage distribution, and the conductive film is It is only used as the voltage value of the inductive touch point. After the wafer is processed, the coordinate value of the touch point is obtained. Γ360222 The process of the five-wire resistive touch panel is extremely precise. The four-wire resistive touch panel is high, so the surrounding voltage is extremely easy to cause the uneven voltage distribution on the working surface, so that the coordinate position of the actual touch point is judged incorrectly, and even the touch panel cannot be used. Generally, the five-wire touch panel adopts I::Process 2, which uses the high-temperature silver paste of 5〇0 degrees or more in the glass base U-resistance is relatively low and the printed wiring of the sentence is uniform, ... can meet the five Line-type averaging requirements for resistance values, but due to the possibility of glass cracking after being subjected to external impacts, small-sized touch panels are often used in consumer electronics such as mobile phones, personal digital assistants (PDAs), etc. Items, if you are not careful It is possible that the glass is broken and damaged. [Explanation] According to the above description, the conductive glass substrate used in the process of the five-wire touch panel may be broken after being subjected to an external force, and the application thereof may be applied. In view of the above, the main object of the present invention is to provide a low-temperature five-wire narrow-frame resistive touch panel design, which is formed by laminating a conductive film and a plastic substrate instead of a conductive glass substrate. The conductive film is surrounded by a compensation design to achieve the anti-drop effect and the average resistance can form a uniform electric field. The technical means used for the above purpose is to design the low-temperature five-wire narrow-frame resistive touch panel. : a plastic substrate; Γ 360222 - a lower conductive film attached to the plastic substrate, the surface of which is coated with a transparent conductive layer, and a peripheral portion of the surface is formed with a wire distribution region along the side of the wire distribution region to form a plurality of different lengths An etched area of size; an upper conductive film is disposed over the lower conductive film, and the surface thereof is plated with a transparent guide The electrical layer is formed with a closed-line silver wire around the periphery of the surface.
本發明係將—料電薄膜與一層帛膠基板貼合以取代 導電玻璃基板’使觸控面板可抗摔而不易破裂，但由於導 電薄膜料低溫製程’形成導線所使用的m烤溫度僅 為攝氏150度左右，其電阻值相對於高溫製程的電阻值將 會比阜义问且均勾性較差，本發明再於下導電薄膜四周邊緣 之導線分佈區的側邊形成數量不等的非連續且相互獨立的 ㈣區域’該些㈣區域係可根據本身的長度大小而大幅 或微幅改變其鄰近導線分佈區之電阻值，故使導線分佈區 上各段的電阻值一彡’故其各段的電壓分佈可視為相同， 而能夠形成一均勻的電場。 【實施方式】 本發明欲以抗摔且不易破裂之塑膠基板導入五線式觸 控面板之製程，本發明作法在此 a省十咕 令知月作法係將一層導電薄膜與一層塑膠 基板貼合以取代導電玻璃基 s ’ 制< ^ 汉1一田於等電溥臈係為低溫 1程，銀聚烘烤溫度僅為攝氏 〇攝內150度左右，其電阻值相對 於尚溫製程的電阻值高且均勾性較不卜舉例而言 均電阻值會使# 5伏特的電壓值從導線的—端點進入後， M導線的長度而慢慢下降，逾越中段部分之電M值可能 ，、剩4. 5伏特，以致於整段 b ^ , Α 整奴線路的電壓無法視為相同大小， 如此一來就無法形成均句 ^ ^ ^ „ 耵电％即無法符合五線式觸控 面板對電阻值平均性的苒 ^ 上加以、… 惟本發明係可在面板結構 加乂適§的改變，即可 乂 别述電阻值平均度不佳的問 題而在五線式觸控面板上槎供且古一 , P ^ 知供/、有问度平均電阻特性的 ¥線滿足觸控面板的設計需求。 首先就觸控面板的έ士椹 指豆外構略加Μ ’觸控面板之邊框係 才日其外圍輪廓與觸控顯示 楂垃於W e L透緣之間的區域，若觸控面板 連接軟性印刷電路板之一 -, 邊框的寬度小於1 Omm，且其他 盖、疋義此為窄邊框之觸控面板；為改 善則述電阻值的平均性， -+ ήα lv m ,u f將觸控面板周圍銀線的佈線設 满雜h β $ P值千均目的’銀線的佈線設計 在迫使觸控面板之邊桓必須加大才得以容納足夠 對於窄邊框觸控面板的客製需求將造成極大不 為此本發明係提供— 4 gn- , ^ , 解决電阻值平均性不佳之技術 手&’清參考第一圖所示夺 示意圖，係包含： 係本七明-較佳實施例之分解 一塑膠基板（1〇)，盆奸睹 (pnUm u 其材質可為聚碳酸酯 (Polycarbonate , PC)、聚斜 | _ 田祕 氣乙稀（_等。 對本—甲酸乙二醇MPET)、聚 —下導電薄膜（2 〇 )，松伽— 人，甘主 U )係與該塑膠基板（1 〇 )貼 σ具表面具有一透明導電声， 电滑且该表面四周邊緣形成有 Γ360222 導線分佈區（2 1 ) ’其中，請配合第二圖及第三圖所示， 沿該導線分佈區（2 1 )之内側邊係形成複數不同長度大 小之#刻區域（2 2 )，本實施例中，該些蝕刻區域（2 2)係藉由蝕刻該下導電薄膜（2 〇)之透明導電層所形 成的非連續微小線段’越靠近導線分佈區（2 1 )兩端的 蝕刻區域（2 2)具有越長的長度，越靠近導線分佈區（2 1 )中間則漸漸變短； 一上導電薄膜（3 〇)，係設於該下導電薄膜（20) 上方’其表面具有一透明導電層，且圍繞該表面四周邊緣 形成有一封閉狀的銀線（3 1 )。 前述姓刻區域（22)會使其鄰近的導線分佈區（2 1 )的區段電阻值改變’由於原本尚無形成蝕刻區域的導 電刀佈區（21)，其各區段之電阻不一致，係由其兩端 越接近中間部分，電壓係漸漸降低。以施加導電分佈區（2 1 )兩端的電壓為5伏特為例，其中間部分的電壓值係降 至4. 5伏特。然而由於蝕刻區域（2 2 )的形成，靠近兩 端的蝕刻區$(2 2)將使導電分佈@ (2丄）兩端的電 阻值增加，故會造成兩端的電壓下降至4.5伏特，而越靠 =中間部分的蝕刻區域（2 2 ) @來越短，如此一來，使 ⑺導電刀佈d(21)的電阻值漸緩，使得導電分佈區（2 1 )兩端的電阻值近似於中段的電阻值，故電壓值下降程 度也漸漸減少，最後達到兩端至中間皆約為4. 5伏特的電 I，因此而構成了均勻的電場。 綜上所述，本發明係將一層導電薄膜與一層塑膠基板 1360222 貼合以取代導電玻璃基板，使觸控面板可抗摔而不易破 裂，並於下導電薄膜四周邊緣的導線分佈區側邊形成不連 續的蝕刻區域，該些蝕刻區域係視其長度大小大幅或微幅 改變其鄰近導線分佈區之電阻值，使導線分佈區各段的電 ^值達到一致，是以，當施加電壓於導線分佈區時，其各 j的電壓分佈可視為相同’ &而能夠在觸控面板表面形成 ''均勻的電場。 【圖式簡單說明】 第一圖.係本發明一較佳實施例之分解示意圖。 圖。第二圖：係.本發明一較佳實施例上導電薄膜之俯視 第二圖：係第二圖之局部放大。 第四圖：係習知五線式觸控面板示意圖。 第五圖·係五線式觸控面板之電壓分佈示意圖。 【主要元件符號說明】 (10)塑膠基板 （2〇)τ導電薄膜 (2 1 )導線分佈區（2 2 )蝕刻區域 (3 〇 )上導電薄膜（3 1 )銀線 (4 〇 )導電玻璃基板（4 1 )導線線路 (5 〇 )導電薄膜 （5 1 )銀線In the invention, the electric film is bonded to a layer of silicone substrate to replace the conductive glass substrate, so that the touch panel can resist falling and is not easy to be broken, but the m-bake temperature used for forming the wire is only due to the low-temperature process of the conductive film material. At about 150 degrees Celsius, the resistance value of the resistor is higher than that of the high temperature process, and the hooking property is poor. The present invention forms a discontinuous number of discontinuities on the side of the conductor distribution area around the lower conductive film. And (4) regions that are independent of each other. The (four) regions can greatly or slightly change the resistance value of the adjacent wire distribution region according to their own length, so that the resistance values of the segments in the wire distribution region are one The voltage distribution of the segments can be considered to be the same, and a uniform electric field can be formed. [Embodiment] The present invention is intended to introduce a five-wire touch panel into a plastic substrate that is resistant to falling and is not easily broken. The method of the present invention is to apply a layer of conductive film to a plastic substrate in the province. In order to replace the conductive glass base s ' system &^; ^ 1 1 in the isoelectric system is a low temperature 1 process, the silver poly baking temperature is only about 150 degrees Celsius, its resistance value relative to the temperature process The resistance value is high and the hooking property is inferior. For example, the resistance value causes the voltage value of #5 volt to enter from the end point of the wire, and the length of the M wire gradually decreases, and the electric M value exceeding the middle portion may be , the remaining 4.5 volts, so that the entire section b ^, Α the voltage of the slave line can not be regarded as the same size, so that can not form a uniform sentence ^ ^ ^ „ 耵 即 即 即 无法 无法 无法The panel is added to the average value of the resistance value, ... However, the present invention can be modified in the panel structure to correct the problem that the average value of the resistance value is not good, and is on the five-wire touch panel.槎 且 and Gu Yi, P ^ know supply /, have average resistance The sexual ¥ line meets the design requirements of the touch panel. Firstly, the gentleman's fingertips of the touch panel are slightly added. The border of the touch panel is only the outer contour and the touch display. In the area between the transparent edges, if the touch panel is connected to one of the flexible printed circuit boards, the width of the frame is less than 1 Omm, and the other covers are the touch panels of the narrow frame; Sex, -+ ήα lv m , uf will set the wiring of the silver wire around the touch panel to be full of h β $ P value thousands of purposes. The design of the silver wire is forced to increase the size of the touch panel to accommodate enough The customer demand for the narrow-frame touch panel will not be greatly provided for the present invention - 4 gn- , ^ , to solve the problem of poor average resistance value of the hand & 'clear reference to the first figure Including: Decomposing a plastic substrate (1〇) according to the preferred embodiment of the present invention, the pnUm u material can be polycarbonate (Polycarbonate, PC), poly oblique | _ _ et al. For the original - formic acid glycol MPET), poly-lower conductive film (2 〇 ), Songjia - Ren, Gan main U) and the plastic substrate (1 〇) attached to the surface of the sigma has a transparent conductive sound, electric sliding and the periphery of the surface is formed with a 360222 wire distribution area (2 1 ) ' As shown in the second and third figures, a plurality of inscribed regions (2 2 ) of different lengths are formed along the inner side of the wire distribution region (2 1 ). In this embodiment, the etching regions are 2 2) the longer the length of the etched region (2 2 ) which is formed by etching the transparent conductive layer of the lower conductive film (2 〇), the closer to the etched region (2 2 ) at both ends of the wire distribution region ( 2 1 ), The closer to the middle of the wire distribution region (2 1 ), the shorter the film is formed; an upper conductive film (3 〇) is disposed above the lower conductive film (20) and has a transparent conductive layer on the surface thereof and surrounds the periphery of the surface. A closed silver wire (3 1 ) is formed. The above-mentioned surname area (22) changes the section resistance value of the adjacent conductor distribution area (2 1 ). Since the conductive knives area (21) where the etched area is not formed originally, the resistance of each section is inconsistent. The closer the two ends are to the middle part, the voltage system gradually decreases. 5伏特。 The voltage value of the intermediate portion of the voltage is reduced to 4.5 volts. However, due to the formation of the etched region (2 2 ), the etched region $(2 2) near the ends will increase the resistance across the conductive distribution @ (2丄), causing the voltage across the terminal to drop to 4.5 volts, and the more = the shorter the etched area (2 2 ) @ of the middle part, so that the resistance value of the (7) conductive knives d(21) is gradually reduced, so that the resistance values at both ends of the conductive distribution area (2 1 ) are similar to those of the middle stage. The resistance value is reduced, so that the voltage value is gradually reduced. Finally, the electric I is about 4.5 volts from both ends to the middle, thus forming a uniform electric field. In summary, the present invention attaches a layer of conductive film to a plastic substrate 1360222 to replace the conductive glass substrate, so that the touch panel can resist falling and is not easily broken, and is formed on the side of the wire distribution area at the periphery of the lower conductive film. Discontinuous etched regions, the etched regions vary the resistance of the adjacent wire distribution regions by a large or slight change in the length of the wires, so that the electrical values of the segments of the wire distribution region are consistent, that is, when a voltage is applied to the wires When the distribution area is used, the voltage distribution of each j can be regarded as the same ' & and a ''uniform electric field can be formed on the surface of the touch panel. BRIEF DESCRIPTION OF THE DRAWINGS The first figure is an exploded view of a preferred embodiment of the present invention. Figure. Figure 2 is a plan view of a conductive film according to a preferred embodiment of the present invention. Second figure: a partial enlargement of the second figure. The fourth picture is a schematic diagram of a conventional five-wire touch panel. The fifth figure is a schematic diagram of the voltage distribution of the five-wire touch panel. [Description of main component symbols] (10) Plastic substrate (2〇)τ conductive film (2 1 ) Conductor distribution area (2 2 ) Etched area (3 〇) on conductive film (3 1 ) Silver wire (4 〇) Conductive glass Substrate (4 1 ) wire line (5 〇) conductive film (5 1 ) silver wire