1303835 九、發明說明： 【發明所屬之技術領域】 本發明涉及一種觸控面板的構造，特別是一種電容式觸控面板的構造。 【先前技術】 近年來，隨著資訊家電（Information Appliance ; IA)產品的興起，觸 控面板（touch panel)漸漸取代舊有以鍵盤、滑鼠與資訊產品溝通之方式， 而其應用範圍已遍及包括··可攜式之通訊電子及資訊產品（如個人數位助 理PDA等）、金融/商業用系統、醫療掛號系統、工廠監控系統、公共資訊1303835 IX. Description of the Invention: [Technical Field] The present invention relates to a structure of a touch panel, and more particularly to a configuration of a capacitive touch panel. [Prior Art] In recent years, with the rise of information appliances (IA) products, touch panels have gradually replaced the old ways of communicating with keyboards, mice and information products, and their applications have spread. Includes ··Portable communication electronics and information products (such as personal digital assistant PDA, etc.), financial/commercial systems, medical registration systems, factory monitoring systems, public information
導覽系統，以及辅助教學系統等，由於其操作簡易，因而增加了消費者使 用之方便性。 ' 觸控面板依其感應方式而區分為電容式、音波式、紅外線式、磁場感 應式、電阻式等；而其中電容式觸控面板應用於大尺寸的面板，係於玻璃 絕緣基板上鍍有導電層，並藉由導電層邊緣上所印刷的多個導電線段而在 導電層上產生X及γ方向之電場，透過人體的手減是筆尖於觸控面板上 的觸碰，峨電容產生變化，並從其雌生之解電絲檢測出碰觸處的χ 及Υ座標位置，進而送出相應之指令。 已公開的美國專利第4822957號以及4371746號揭露了_種觸控面 板’然而兩者皆丨現電場線性不紅問題，而導紐段所產生之電場的線 性良好與否會影_控位置判斷的正確性；為了解決關題，在已公開的 美國專利第6781579號揭露了 _種觸控面板，係透過多排導電線段之佈設， =導電線段的設置數目料數並往内崎減，藉此使得電場的線性較佳， :’且減少導電線段之設置區域大小，而使得面板可觸控區域增大。 羔而’上述發明雖改善了先前技術之電場線性不佳的情 ==點形狀係呈矩形（請參閱「第1圖」），而由於導體表面電荷3 表面鱗有關’導體之表面曲率愈大，其電荷之分佈密度愈高，反 :面鲜愈小，其電叙分佈密度也愈低，目此上述之 進而影響整個面板的可觸控區域大小。 祕對車又小， 5 1303835 ， 【發明内容】 • 本發明提出了一種電容式觸控面板，其功能在於可具有 • 性分佈情形。 卞又兒％線 為貫現上述目的，這種電容式觸控面板的較佳實施方案，勺括了 、 緣基板、一導電層以及數個導電線段。其中導電層設置於絕緣基板上，: 電線段則設置於導電層之邊緣，而導電線段之一端點具有—導圓角，、曾f 角之圓心則位於導電線段之長軸方向的中心線上，並使導圓角之 令， =於R/2〜10R之間（R為導電線段之寬度）；藉此，導圓角之平緩形= 得端點之電荷密度分佈平緩，電場具線性之區域增大，以達到觸控準確 _ 以及面板之可觸控區域皆增加之優點。 工 本發明之另-實施例，其導電線段之端點包括複數個導圓角 圓角之曲率半徑介於娜〜腿之間，另外，較佳的實施例亦使 = -=置_於導電線段之長軸方向的中心線，而可達到均勻之電力線分佈情 【實施方式】 較佳=參圖」，^露了本發_提出之電容式觸控面板的The navigation system, as well as the auxiliary teaching system, increase the convenience of the consumer because of its ease of operation. The touch panel is divided into a capacitive type, a sound wave type, an infrared type, a magnetic field induction type, a resistive type, etc. according to the sensing method thereof; wherein the capacitive touch panel is applied to a large-sized panel, which is plated on a glass insulating substrate. The conductive layer generates an electric field in the X and γ directions on the conductive layer by using a plurality of conductive segments printed on the edge of the conductive layer. The hand reduction through the human body is a touch of the tip on the touch panel, and the tantalum capacitance changes. And from the female's solution wire to detect the position of the χ and Υ coordinates of the touch, and then send the corresponding instructions. U.S. Patent Nos. 4,822,957 and 4,371,746 disclose a touch panel of the type of touch panel. However, both of them have a problem that the electric field is not linear, and the linearity of the electric field generated by the guide segment is good or not. In order to solve the problem, in the published U.S. Patent No. 6,78,579, a touch panel is disclosed, which is arranged through a plurality of rows of conductive segments, = the number of conductive segments is set and counted inward, borrowing This makes the linearity of the electric field better, and reduces the size of the set area of the conductive line segment, so that the touch area of the panel increases. Lamb and the above invention improves the linearity of the electric field in the prior art == the shape of the point is rectangular (see "1"), and the surface of the conductor is 3 The higher the distribution density of the charge, the smaller the surface is, the lower the density of the electric distribution is, which in turn affects the size of the touchable area of the entire panel. The secret car is small, 5 1303835, [Disclosed] The present invention proposes a capacitive touch panel whose function is to have a sexual distribution. In order to achieve the above object, a preferred embodiment of the capacitive touch panel includes a substrate, a conductive layer, and a plurality of conductive segments. The conductive layer is disposed on the insulating substrate, wherein: the wire segment is disposed at an edge of the conductive layer, and one end of the conductive segment has a rounded corner, and the center of the f corner is located at a center line of the long axis of the conductive segment. And make the rounding order, = between R/2~10R (R is the width of the conductive line segment); thereby, the flattening of the rounded corner = the charge density distribution of the end point is gentle, the electric field has a linear area Increase to achieve accurate touch _ and the touchable area of the panel is increased. In another embodiment of the present invention, the end points of the conductive segments include a plurality of rounded corners having a radius of curvature between the legs and the legs. Further, the preferred embodiment also enables = -= to be placed on the conductive segments. The center line of the long axis direction, and the uniform power line distribution can be achieved. [Embodiment] Preferred = reference picture", ^ reveals the capacitive touch panel proposed by the present invention
孕乂仏μ %例，其包括有一絕緣基板1〇、一導電 攸曰J 於本較佳實施例中，絕緣基板10之材線段3〇。 有一μ暮雷厣 貝料玻H緣基板10上鍍 • ΑΤ⑴曰而2為氧化録錫薄膜―y tin oxide· ’導電層2〇的邊緣係以例如導電銀墨之導電 ^ (vacuumdeposit) (sputtering) f " ' 之邊緣形成多個相互間隔的導電線段3 ^电層2〇 板之邊框（财絲）遮蓋住=G職輯以觸控面 控區域。 除了故框以外的中間區域即為面板之可觸 導圓士第3圖」，於本較佳實施例中’導電線段30之-端呈有一 ¥51角4G’而由於導圓角4()之形狀係 H- 之端點的電荷密度分佈亦較 化’因此’導電線段30 電荷密度分佈不均，=二==方:r的存在 ¥圓角4°設計使得電場強度變化較為平緩心 6 1303835 不會出現突然的改變；請參閱「第4_]〜4_2 術之導電線段的電力線分佈圖，本發明===本發明與習知技 具有導圓㈣之設計（見第μ圖線錢之端點 較小，使得編㈣把, 口此觸控面板所需之邊框區域 其方型之== 具第==觸f區域’然而，習知之導電線段由於 板所具有線性的區域相對較小（虛線區域），因此觸控面 ^框區綠大’觸控面板的可觸控區域相對較小。 線段mim」’ Γ佳實施例之導圓角4G _心c餘於導電 八卞又JU之長軸方向的中心線L上，導 ^ 角40之曲率#AR/2 ^ ^/電办又·30具有一見度尺，且導圓 為^主+仅為敗，然而’導圓角40之曲率半徑大小並不以圖式所絡 為^㈣合參閱「第5圖」，圓心c亦位於導電線段3〇 〜線L上’但其圓心c之位置係遠離該 ^ 於導恭下，40之曲率半徑範圍介於肪〜騰之間，藉此， 佈=線=〇端點所形成之單，圓角40可使導電線段3〇端點的電荷分 句勻，因此所得到之電力線分佈的線性情形良好。 制於==「第6〜8圖」’導圓角40之數目亦可為複數個，而不限 可為偶ΐ αΓ」所示單一個導圓角40之設計，其中導圓角40的數目 ’7圖」）’亦可騎數（如「第8圖」）；在本較佳實施例 而導圓角40 2=2全數位於導電線段30之長轴方向的中心線L上， 數個導圓角偏…义介於刪〜】0R之間；另外’較佳的實施例係使複 電力綠2 可對稱於導電線段3G之長軸方向的中心線L，而使得 施例，複且—致（見「第6〜8圖」）’而在另一可行的較佳實 線L ί目Γ肖⑽的位置懈對稱於導鎌段3G之長财向的中心 角40, 於使用之時’由於導電線段3〇之端點具有一個或複數個導圓 使用者力線的形狀不會出現突然的改變，職生的電場線性亦較佳， 者以手指或是筆搞碰觸控面板上任―位置，騎產生之誘導電流可 7 1303835 更準確的定義 的正確性麵之提高。及位置，喊_控職生之相應指令 綜上所述，本發明之 之一端具有 產生 性以及增 -個數個導圓角4〇二：土工面板主要利用導電線段30之—相 用40，在使用者觸碰本發 線性良好之電場以及平缓μ式觸控面板時， 大觸控面板之可觸控區域之目的。 〖生 惟本發明雖以較佳實施例說明如上，然其並非用以限定本發明，任何 熟習此技術人員，在不脫離本發明的精神和範圍内所作的更動與潤飾，仍 應屬本發明的技術範脅。 1303835 【圖式簡單說明】 =，：示習知導電線段之端點電荷分佈 示電ί式觸控面板的實施例構造。 …s、3不電々搞控面板的實施例之導電续必_ Γ圖⑹棒嫩她咖⑽_ =㈣鄕谢咖咖㈣啦切力線分2 =5圖’⑹電容式觸控面板 苐6圖，⑼電容式觸控面 ::二_之導電線段示意圖。 第7圖’綠示電容式觸控面板的二之導電線段示意圖。 第8圖，—電容式觸控面 ^貫施例之導電線段示意圖。 第9圖，_電容式觸控邮^幢_例之導電線段示意圖。 10 20 30 40 C L . R , 【主要元件符號說明】 ^^錢例之導電線段示意圖。 •絕緣基板 •導電層 •導電線段 •導圓角 圓心 中心線 導電線段之寬度For example, an insulating substrate 1 〇, a conductive 攸曰J, in the preferred embodiment, a material line segment 3 of the insulating substrate 10. There is a μ 暮 厣 料 玻 H H H H H H H H H H H H 曰 曰 曰 曰 曰 曰 y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y 导电 导电 导电 导电 导电 导电) f " 'The edges form a plurality of mutually spaced conductive segments 3 ^ Electrical layer 2 〇 之 ( ( 财 财 财 = = = = = = = = = = = = = = = = = = = = = = = In the preferred embodiment, the intermediate portion except the frame is the panel of the touchable guide (Fig. 3). In the preferred embodiment, the end of the conductive segment 30 has a shape of ¥51G4G. The charge density distribution at the end of the shape H- is also compared to 'so' the distribution of charge density of the conductive segment 30 is uneven, = two = = square: the presence of r ¥ 4° design makes the electric field strength change more gently 6 1303835 There will be no sudden changes; please refer to the power line distribution diagram of the conductive segments of "4_]~4_2, the present invention === The present invention and the conventional technique have the design of the guide circle (4) (see the figure of the figure The end point is smaller, so that the frame area required for the touch panel is square == with the == touch f area. However, the conductive line segment has a relatively small linear area due to the board. (dotted area), so the touch surface of the touch panel is green. The touchable area of the touch panel is relatively small. The line segment mim"' is better than the guide circle 4G _ heart c is in the conductive gossip and JU On the center line L of the long axis direction, the curvature of the guide angle 40#AR/2 ^ ^/Electric office 30 has a viewing scale. And the guide circle is ^main + only defeat, but the radius of curvature of the turn-around fillet 40 is not in the form of the figure ^ (4) See "5th figure", the center c is also located in the conductive line 3〇~ line L On the 'but the position of the center c is far from the ^, under the guide, the radius of curvature of 40 is between the fat and the enthalpy, whereby the cloth = line = the point formed by the end point, the rounded corner 40 can The electric charge of the end point of the conductive line segment 3 is uniform, so the linearity of the obtained power line distribution is good. The number of the rounded corners 40 can be plural, but not limited to == "6th to 8th" It can be a design of a single rounded corner 40 as shown in the figure ,, where the number of the rounded corners 40 '7') can also be the number of rides (such as "8"); in the preferred embodiment The rounded corners 40 2=2 are all located on the center line L of the long axis direction of the conductive line segment 30, and several turns of the fillet are between 〜~0R; Green 2 can be symmetric with respect to the center line L of the long axis direction of the conductive segment 3G, so that the embodiment can be repeated (see "6th to 8th") and another feasible better solid line L The position of the target (10) is arbitrarily symmetrical to the central angle 40 of the long fiscal direction of the guide segment 3G, and the shape of the force line of the conductive line segment 3〇 has one or a plurality of guide circular user lines when used. A sudden change occurs, and the electric field linearity of the vocational students is also better. The finger or the pen touches the position of the touch panel, and the induced current generated by the ride can be more accurately defined by the correctness of the surface. And the position, shouting _ the corresponding instructions of the control student, in summary, one end of the invention is productive and increased - a number of rounded corners 4 〇 2: the geotechnical panel mainly uses the conductive line segment 30 - the phase 40, The purpose of the touchable area of the large touch panel when the user touches the linearly good electric field of the present invention and the gentle μ type touch panel. Although the present invention has been described above by way of a preferred embodiment, it is not intended to limit the invention, and any modifications and refinements made by those skilled in the art without departing from the spirit and scope of the present invention should still belong to the present invention. The technical norm. 1303835 [Simple description of the figure] =,: The terminal charge distribution of the conductive line segment is shown. ...s, 3, no electricity, the control panel of the embodiment of the conductive continuation _ Γ map (6) stick tender her coffee (10) _ = (four) thank you café (four) 啦 shear line points 2 = 5 map ' (6) capacitive touch panel 苐 6 Figure, (9) Capacitive touch surface:: The schematic diagram of the conductive line segment. Figure 7 is a schematic view of the conductive line segment of the green capacitive touch panel. Fig. 8 is a schematic view of a conductive line segment of a capacitive touch surface. Figure 9, _ capacitive touch mail ^ building _ example of the conductive line segment. 10 20 30 40 C L . R , [Description of main component symbols] ^^ Schematic diagram of the conductive line segment of the money example. • Insulating substrate • Conductive layer • Conductive line segment • Rounded corner Center center line Width of conductive segment