200945394 九、發明說明： 【發明所屬之技術領域】 本發明乃係有關於-種觸控面板，尤指於可令光源高度穿 透’以讓使用者運用視覺與觸覺即可方便輪入的操作介面。 【先前技術】 伴隨著近年來由於秘絲科技的快卿進，贿觸控面板 ❹ (T〇UChPanel)的生產程本大幅降低，因此觸控面板目前已逐漸 被廣泛應驗-般的毅性電子商品上，例如行動電話手機、數 =相機、數位音樂撥放器⑽）、個人數位助理器⑽）、衛星 =(叫㈣新的UMPG(車騎_mbllePC) 荨j、里的數位電器，在這坻電子商σ 的顯示幕_ 觸控面板被配置於電器 摔作，_ 歸制柯叫行互動式輪入 :效率大μ善人與機器之間溝通介面的親善性，並提升輸入 面板面板至少包括有電阻式觸控面板、電容式觸控 電阻式觸押=板等三種。請參閲圖―、二所示，習知之 導電膜明之可撓性觸厂咖上 1 aisi To^tl1 4 5 電高分子、微 〇）、乳化銦鋅（簡稱ΙΖ0)、導 作在該_ _ Γ _••叙_輸料，被製 銦锡膜（_IT⑴3面上’*釘導tm3可以為氧化 ⑷丁〇）、氧化轉（簡謂）、導電高分子、微米 200945394 厚度以下之金屬薄膜...等之透明導 ^ u 电材枓，被製作在該基板1 4 的上表面’在該上、下導電膜12、1 q一 i 4 i將彼此分開一定間隙而對向配^二者中間以多數間隔球 Ο 置，而該二導電膜1 2、1 3上的喊係透過電接在側面邊緣 , 表式排線1 4 2及訊號處理 電路（圖中未不出）；該觸控面板1配置於CRKLCD等頻示 裝置上時，储由—面觀看顯示，—面 輸入資料或指令，當上、下導電腺Ί 9 衫等來按壓 m ο κ丄外 卜導包膜12、13接觸時，會產生電 極以計鼻出觸壓之座標，再經過電子判讀，以執行指令。 雜摘控面板2，請參_三所示，其主要係於—玻璃基 上以金屬讀氧化銦錫（以下_ τ〇)形成一傳導層 料層22蝴—_23，輸層23之表面 2盖有一層保護層24，其於應用時，係於傳導層22之四角 ^並於觸控面板之表面職—均勻之電場，當可以導電的物 」例如像是人的手指接觸該觸控面板2之表科，可吸走一點 微置的電流’而_面板2之控細彳可計算出電流被吸走的比 例，進而計算出X軸和γ軸的位置。 外線式觸控面板3，請參閱圖四所示，其主要係於觸控面 3的X轴方向及γ軸方向各設一紅外線發射端31、32及一 接收端3 3、3 4，而藉由將手指或筆按壓於觸控面板3之表面， 則可遮斷觸控面板3中之紅外線訊號，並透過χ、γ軸感應器得 接觸位置之座標，進*可以得知手指是否在馳面板3上，以 6 200945394 及其在觸控面板3上的位置。 惟，不論哪一種形式之觸控面板，均係利用按壓時盘元 面之接觸，來得知觸控之位置，而若以手指來按壓觸控面板表面、 入指令’常會因為按壓產生之訊號源的範圍較大，使得觸壓 =之靈敏度、精度與可操作面積減少，無法達到一良好之操控 有馨於習知之觸控面板具有上述之缺失，是以，要如何製作 出具有-良好操控與最大可操作面績 控面板製造業麵祕靠之_。n脑板’實為觸 【發明内容】 時 彳Λ解紅課題’乃在克服f知触面板目按塵操控 寺導電膜與下導電膜因接觸之面積過大，而導致操控靈敏 又、解析度不佳與邊緣可操作面麵縮減之缺失。 段’乃在提供—種觸控面板，該觸控面 板至）、包括有-觸薄膜、一上導電膜、 其主要係於上導電膜„戈下暮+_ , h膜及基板 此，以手觸面設有突狀結構，藉 田以托麵__面㈣，柯令該 細，虹、下冑峨， 模式轉變成突狀結構與其中未設有突狀結構之上導 Γ邊ΐΚΓ之接觸，進而來增強系統之辨識能力，並達到增 加邊緣可#作_與靈敏度之功效。 200945394 本發明之次—技術手段，乃在提供—圃控面板 ，邊觸控面 板至y 〇括冑觸壓溥膜、—上導電膜、一下導電膜及一基板， 八主要係於上導電膜及下導電膜之接觸面好突狀結構，其中， 該上導電獻下導觀之接_的突狀結構係互械非精之條 、狀藉此田以手指或筆輕壓觸控面板，可令該上導電膜與下 導電膜藉由大狀結構之頂端優先接觸，並使上、下電極導通，使 訊號源的強度增強模式轉變成每個突狀結構之接觸重疊，而可增 強系統之辨識能力’並達到增加邊緣可操作面積與靈敏度之功效。 ❹ 本發明之在-技術手段，乃在提供—種難秘，該觸控面 板至少包括有i壓薄膜、一上導電膜、一下導電膜及一基板， -要係於上導電膜或下導電膜至少—細面設有突狀結構，其 中’該突狀結_祕陳之設置，觀，當以手減筆輕壓觸 =面板’可令該上導魏與下導電臈藉由突狀結構之頂端優先接 、、使上下電極導通’使訊號源的強度增強模式轉變成突狀 結構與射未設有絲結構之上導制或下導_之接觸，而可 _、統之辨識能力，並達到增加邊緣可操作面積與靈敏度之功 效。 本發月之X技術手段’乃在提供一種觸控面板，賴控面 2少包括有—觸㈣膜、—上導電膜、—下導電膜及一基板， 中、要2於上導電膜或T導電膜至少—接觸面設有突狀結構，其 ’該突狀結構係成密佈之點狀設置，藉此，當以手指或筆輕壓 200945394 觸控面板，可令該上導電酿τ導麵#由餘 接觸’並使上、下電極導通，使訊號源的強 個突狀結難其巾未财餘結敎上導賴或下導 ==咖棚Ή她峨面積與靈 【實施方式】 ❿ +錢貴審查員能更易於了解本發明之結構及所能達成 效’紋配合圖式說明如后： 一觸壓薄膜41 板4 4 百先’請參閱圖五、六所示，本發明之觸控面板4 -上導電膜4 2、一下導電膜4 3 •透明基 …該觸㈣膜4 1係為-透明且具可撓性之薄難體，該觸屢 薄膜4 1其中-表面設有—上導電膜42，而該觸㈣膜^相 對於該上導電膜42之另-表面則設有一保護層41丄，該保護 ❹層4 1 1可保護觸壓_4 1防止顺，該上導電膜4 2係以金 屬蒸錄氧化銦錫（以下τ〇)的方式被妓在該觸壓薄膜 4 1的表社，而該下導植4 3亦被以金屬魏〗τ 〇的方式 設置在該基板4 4其中之一表面上，在該上、下導電膜4 2、4 3-者中取？制隔球4 5將彼此分開—定間㈣對向配置， 該基板4 4係為一透明板體，並可供背光模組（圖中未示出）予 以顯示’其中’該上導賴4 2或下導賴4 3二者至少有—接 9 200945394 觸面設有突狀結構4 6。200945394 IX. INSTRUCTIONS: [Technical Field] The present invention relates to a touch panel, in particular, a device that allows the light source to be highly penetrated to allow the user to use the visual and tactile sense to facilitate the wheeling operation. interface. [Prior Art] With the rapid development of the secret silk technology in recent years, the production process of the bribe touch panel 〇 (T〇UChPanel) has been greatly reduced, so the touch panel has been gradually widely tested. Commodities, such as mobile phone, number = camera, digital music player (10), personal digital assistant (10), satellite = (called (four) new UMPG (car riding _mbllePC) 荨j, digital appliances in The display screen of the e-commerce σ _ the touch panel is configured to be thrown into the electrical appliance, _ 归 柯 柯 柯 互动 互动 互动 : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : Including resistive touch panel, capacitive touch resist type touch pad = board, etc. Please refer to the figure -, two, the known conductive film Ming flexible touch factory coffee 1 aisi To^tl1 4 5 Electrolytic polymer, micro enthalpy), emulsified indium zinc (abbreviated as ΙΖ0), and guided in the _ _ _ _•• _ feed, made of indium tin film (_IT (1) 3 surface '* nail lead tm3 can be oxidized (4) 〇), oxidation transfer (simplified), conductive polymer, micron 200945394 thick The following transparent film, etc., is fabricated on the upper surface of the substrate 14, and the upper and lower conductive films 12, 1 qi i i i are separated from each other by a certain gap. The plurality of spacer balls are disposed between the two of the two, and the shunts on the two conductive films 1 2 and 13 are electrically connected to the side edges, the table cable 1 4 2 and the signal processing circuit (not shown) When the touch panel 1 is disposed on a frequency display device such as a CRKLCD, the storage is viewed by the surface, the data or the command is input, and the upper and lower conductive gland Ί 9 shirts are pressed to press m ο κ 丄When the guide films 12, 13 are in contact, an electrode is generated to measure the coordinates of the nose contact pressure, and then electronically interpreted to execute the command. The miscellaneous control panel 2, as shown in FIG. 3, is mainly formed on the glass substrate by a metal read indium tin oxide (hereinafter, _ τ 〇) to form a conductive layer layer 22 - _23, the surface of the transport layer 23 The cover is provided with a protective layer 24, which is applied to the four corners of the conductive layer 22 and is applied to the surface of the touch panel to be a uniform electric field. When a conductive object is touched, for example, a human finger touches the touch panel. In the table of 2, you can suck a little micro current. 'The control of the panel 2 can calculate the ratio of the current being sucked away, and then calculate the position of the X and γ axes. The external touch panel 3, as shown in FIG. 4, is mainly provided with an infrared emitting end 31, 32 and a receiving end 3 3, 3 4 in the X-axis direction and the γ-axis direction of the touch surface 3, respectively. By pressing a finger or a pen on the surface of the touch panel 3, the infrared signal in the touch panel 3 can be blocked, and the coordinates of the contact position can be obtained through the χ and γ-axis sensors. On the panel 3, take 6 200945394 and its position on the touch panel 3. However, no matter which type of touch panel is used, the contact position of the panel is used to know the position of the touch, and if the surface of the touch panel is pressed with a finger, the command source is often used because of the pressing. The range is large, so that the sensitivity, precision and operable area of the touch pressure = can not be achieved, and a good control can be achieved. The touch panel has the above-mentioned defects, so how to make a good control The largest operable surface control panel manufacturing surface is secret. n brain plate 'actual touch' [invention content] When the problem is solved, the problem is that the control area is too large, and the control is sensitive and the resolution is too large. Poorness and lack of edge-operable face reduction. The segment is provided with a touch panel, the touch panel includes a touch-sensitive film, an upper conductive film, and is mainly attached to the upper conductive film „戈下暮+_, h film and substrate, to The hand touch surface is provided with a protruding structure, and the surface of the hand is used to support the surface __ surface (four), Ke Ling the fine, the rainbow, the lower jaw, the mode is transformed into a protruding structure and the guide edge is not provided above. The contact, in turn, enhances the recognition ability of the system, and achieves the effect of increasing the edge and the sensitivity. 200945394 The second technical method of the present invention is to provide a control panel, a touch panel to the y Touching the ruthenium film, the upper conductive film, the lower conductive film and a substrate, the eight main lines are on the contact surface of the upper conductive film and the lower conductive film, wherein the upper conductive layer provides a guide junction The structure is a non-precision strip, and the touch panel is lightly pressed by a finger or a pen, so that the upper conductive film and the lower conductive film are preferentially contacted by the top end of the large structure, and the upper and lower electrodes are made. Turn on, transforming the intensity enhancement mode of the signal source into the contact weight of each protruding structure The invention can enhance the recognition ability of the system and achieve the effect of increasing the edge operable area and sensitivity. ❹ The technical means of the present invention provides a kind of difficulty, and the touch panel includes at least an i-press film, The upper conductive film, the lower conductive film and a substrate are to be attached to the upper conductive film or the lower conductive film at least - the fine surface is provided with a protruding structure, wherein the 'the protruding junction _ secret Chen set, view, when the hand is reduced The light pressure touch panel can make the upper and lower conductive turns preferentially connect with the top end of the protruding structure, and the upper and lower electrodes are turned on, so that the intensity enhancement mode of the signal source is converted into a protruding structure and the unwired wire is not provided. The structure is guided or guided by the _, and can be used to identify the ability to increase the edge operable area and sensitivity. The X technology of this month is providing a touch panel. The control surface 2 includes a contact (four) film, an upper conductive film, a lower conductive film, and a substrate, wherein the middle conductive film or the T conductive film has at least a contact structure having a protruding structure, The structure is set in a dotted pattern, borrowed Therefore, when the 200945394 touch panel is lightly pressed with a finger or a pen, the upper conductive τ conduction surface can be made to contact the upper and lower electrodes, so that the strong signal of the signal source is difficult.敎 敎 敎 下 下 = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = : A touch-sensitive film 41 plate 4 4 hundred first 'Please refer to FIG. 5 and FIG. 6 , the touch panel 4 of the present invention - the upper conductive film 4 2 , the lower conductive film 4 3 • transparent base ... the touch (four) film 4 1 It is a transparent and flexible thin body, and the contact film 4 1 is provided with an upper conductive film 42, and the contact (four) film is disposed opposite to the other surface of the upper conductive film 42. There is a protective layer 41 丄, the protective ❹ layer 4 1 1 can protect the touch voltage _ 4 1 from being slid, and the upper conductive film 42 is smashed in the manner of metal etched indium tin oxide (hereinafter τ 〇) a film of the film 41, and the lower substrate 4 is also disposed on one surface of the substrate 44 in the form of a metal, in which the upper and lower conductive films 4 2 , 4 3 from the person? The spacers 4 5 are separated from each other - the fixed (four) opposite arrangement, the substrate 44 is a transparent plate body, and can be displayed by a backlight module (not shown) 'where' the upper guide 4 2 or the lower guide 4 3 at least have a connection 9 200945394 contact surface is provided with a protruding structure 46.
❹ 次請參閱圖七所示，本發明於實施時，該觸控面板4系設於 CRT或LCD等顯示裝置上，並藉由—面觀看顯示，一面以手 指或筆等來按壓，當以手指或筆輕壓觸控面板4時，該具可撓性 之觸墨薄膜41即可隨著指尖或筆尖之施壓產生變形，並令該上 導電膜4 2或下導電膜4 3之接觸面藉由突狀結構4 6之頂端優 ^接觸’藉此’即使以指尖觸碰至較大面積時，仍能有效立即判 吻出上、下導電膜4 2、4 3之接驗置，並使訊號源的強度增 強拉式轉變成突狀結構4 6與其巾未設有突狀結構4 6之上導電 膜4 2或下導_4 3之接觸，明醜μ之職能力及靈敏 度，亚達到增加邊緣可操作面積之功效。 再請參閲圖八、九所示，係為本發明另—實施例之示意圖， 二=觸控面板4之上導電膜4 2及下導電旗4 3之接觸面 ;= 结構❿、4“’且該上導電膜42及下導電膜4 3之接觸面的突狀結構46a u, , ^ 1V . 4 b b係互相成非平行之條肋 L旱二Γ或筆輕壓觸控面板1時，該觸壓薄膜11受壓變形 6 a之頂端:42向下位移’而位於上導電膜42之突狀結構4 Μ與下導賴4 3之綠結構4 6 b 觸’藉此’可令該餘結構4 6 a 目 姦吐％。占 ^ b b互相接觸之位置優弈 號源的強度增強模式轉變 二 10 1 6 b之接觸重4’叫利於__精確之位置，且該 200945394 突狀結構4 6 a、4 6 b頂端互相接觸之位置的訊號，相較於較 大之面積接觸之位置的訊號，可得到更準確及清晰之訊號，並增 加邊緣可操作面積。 又請參閱圖十所示，係為本發明又一實施例之示意圖，其主 要係於觸控面板4之上導電臈4 2或下導電膜4 3至少一接觸面 設有突狀結構4 6，其巾，該餘結構4 6係成格網狀之設置， 藉此，當以手指或筆輕壓觸控面板4 ,可令該上導電膜42或下 導電膜4 3優先與突狀結構4 6之頂端接觸，使上、下之電極導Referring to FIG. 7 , in the implementation of the present invention, the touch panel 4 is disposed on a display device such as a CRT or an LCD, and is pressed by a finger or a pen by a side view display. When the touch panel 4 is lightly pressed by the finger or the pen, the flexible ink-contacting film 41 can be deformed by the pressure of the fingertip or the tip of the pen, and the upper conductive film 42 or the lower conductive film 43 The contact surface is advantageously contacted by the top end of the protruding structure 46. Even when the fingertip touches a large area, the contact between the upper and lower conductive films 4, 4 3 can be effectively and immediately kissed. And the intensity enhancement of the signal source is converted into a protruding structure 46. The contact with the conductive film 42 or the lower guide_4 3 on the towel is not provided with the protruding structure 46, Sensitivity, sub-achieves the effect of increasing the edge operable area. Referring to FIG. 8 and FIG. 9 again, it is a schematic diagram of another embodiment of the present invention. Second, the contact surface of the conductive film 42 and the lower conductive flag 43 on the touch panel 4; = structure ❿, 4" 'and the protruding structures 46a u, ^ 1V . 4 bb of the contact faces of the upper conductive film 42 and the lower conductive film 43 are mutually non-parallel ribs L or the pen is lightly pressed by the touch panel 1 The touch film 11 is pressed and deformed 6 a to the top end: 42 is displaced downwardly, and the protruding structure 4 Μ of the upper conductive film 42 and the green structure of the lower conductive layer 4 4 b contact 'by this' The remaining structure of 4 6 a is spit and spit. The position of the contact with the bb is the strength of the source of the game. The strength of the model is changed. The contact weight of the 10 1 6 b b is called the position of the __ precise position, and the 200945394 The signal of the position where the top ends of the structures 4 6 a and 4 6 b are in contact with each other can obtain a more accurate and clear signal and increase the edge operable area compared with the signal of the position of the larger area contact. The figure is a schematic view of another embodiment of the present invention, which is mainly connected to the conductive layer 4 2 or the lower conductive film 4 3 on the touch panel 4 at least one. The surface is provided with a protruding structure 4 6 and a towel, and the remaining structure 46 is arranged in a grid shape, whereby when the touch panel 4 is lightly pressed by a finger or a pen, the upper conductive film 42 or the lower conductive layer can be made conductive. The film 43 preferentially contacts the top end of the protruding structure 46 to make the upper and lower electrodes lead
通，並使訊號源的強度增強模式轉變成每個突狀結構4 6與其中 未設有突狀結構46之上導電膜42或下導電膜43之接觸之接 觸重疊，進而可令系統精確判讀觸碰之位置；·圖十一所示， 該觸控面板4於上導電膜4 2或下導電則3至少—接觸面設有 突狀結構4 6，其中，該錄結構4 6係成鶴之雜設置，藉 此’當以手指或筆輕壓馳面板，可令上導觀4 2或下導電膜 4 3其中-接觸面優先接觸至突狀結構4 6之頂端，使上、下带 並使訊號源㈣度增強模式轉變成每個突狀: 6〜、中未設有突狀結構46之上導電膜42 3之接觸，以有利於系統判讀精確之位置， =4 位置訊號’相較於較―狀= 晰之訊旒，並增加邊緣可操作面積。。 彳文π 本發明之姐祕，藉由於_面板4之上導電則2或下 11 200945394 導電膜4 3至少-接觸面設有突狀結構4 6，a、 _控螢幕4之表面時，藉由該突狀=手指或筆尖輕 盥下導雷46可令上導電膜4? 上下包極導通，亚使訊號源的強度增強模 錢 構46與其中未設有突狀姓禮轉^成母個突狀結 0 : 狀、。構4 6之上導電膜4 2或下導雷心 3之接觸，而不論是電阻式觸控面板、電、4 式觸控面板’均可_本伽使_射的 位置，進而可增強系統之辨識能力，並達到增加邊緣可操作_ 與靈敏度之功效。 、 綜上所述，本發明藉由上述之觸控面版，確實可達到所訴求 之目的與功效’應已符合專利實用、新穎性以及進步性之要件， 爰依法提出發明專利之申請，祈請貴審查員之詳鑑，惠賜為准 予專利之審定，至感德便。 【圖式簡單說明】 ❹圖-係習知電阻式觸控面板之示意圖。 圖二係圖一之使用狀態示意圖。 圖二係習知電容式觸控面板之示意圖。 圖四係習知紅外線式觸控面板之示意圖。 圖五係本發明觸控面板之立體示意圖。 圖六係本發明觸控面板之剖面示意圖。 圖七係本發明觸控面板之使用狀態示意圖。 12 200945394 圖八係本發明觸控面板另—實施例之立體示意圖。 圖九係圖八之剖面示意圖。 圖十係本翻又—實補之謂示意圖。 圖十-係本發明再—實施例之剖面示意圖。 【主要元件符號說明】 1電阻式觸控面板 2電容式觸控面板 3紅外線式觸控面板 4觸控面板And the intensity enhancement mode of the signal source is converted into a contact overlap between each of the protruding structures 46 and the contact of the conductive film 42 or the lower conductive film 43 in which the protruding structure 46 is not provided, thereby allowing the system to accurately interpret the system. The touch panel 4 is shown in the upper conductive film 42 or the lower conductive layer 3, at least the contact surface is provided with a protruding structure 4 6, wherein the recorded structure 46 is a crane The miscellaneous setting, by which, when the panel is lightly pressed by a finger or a pen, the upper guiding layer 4 2 or the lower conductive film 4 3 can be preferentially contacted to the top end of the protruding structure 46 to make the upper and lower belts And the signal source (four) degree enhancement mode is converted into each protrusion: 6~, the contact of the conductive film 42 3 on the protruding structure 46 is not provided, so as to facilitate the system to interpret the precise position, the =4 position signal 'phase Compared with the more symmetrical = clear, and increase the edge operable area. .彳文π The secret of the invention, by means of _ panel 4 above the conductive 2 or lower 11 200945394 conductive film 4 3 at least - the contact surface is provided with a protruding structure 4 6, a, _ control screen 4 surface, borrow By the protrusion = finger or tip of the pen, the lower conductive guide 46 can make the upper conductive film 4? the upper and lower envelopes are turned on, and the strength of the signal source is enhanced by the modulus of the structure 46 and the protrusion is not provided. A sudden knot 0: shape,. The contact of the conductive film 42 or the lower guided core 3 on the structure 46, and the resistive touch panel, the electric, the 4-type touch panel can be used to enhance the system. The ability to recognize and achieve increased edge operation _ with sensitivity. In summary, the present invention can achieve the purpose and effect of the claim by the above-mentioned touch panel, which should meet the requirements of patent practicality, novelty and advancement, and submit an application for invention patent according to law. Please ask the examiner for the detailed examination. Huisei is the approval of the patent, and it is a matter of feeling. [Simple diagram of the diagram] ❹图- is a schematic diagram of a conventional resistive touch panel. Figure 2 is a schematic diagram of the state of use of Figure 1. FIG. 2 is a schematic diagram of a conventional capacitive touch panel. FIG. 4 is a schematic diagram of a conventional infrared touch panel. FIG. 5 is a perspective view of the touch panel of the present invention. 6 is a schematic cross-sectional view of a touch panel of the present invention. Figure 7 is a schematic view showing the state of use of the touch panel of the present invention. 12 200945394 FIG. 8 is a perspective view of another embodiment of the touch panel of the present invention. Figure 9 is a schematic cross-sectional view of Figure 8. Figure 10 is a schematic diagram of the translation and the actual compensation. Figure 10 is a schematic cross-sectional view of a further embodiment of the present invention. [Main component symbol description] 1 resistive touch panel 2 capacitive touch panel 3 infrared touch panel 4 touch panel
^_薄膜12上導電膜 13下導電膜 14透明基板 141間隔球 142軟式排線 21坡螭基板 22傳導層 23電極層 24保護層 31、3 2紅外線發射端 3 3、3 4接收端 41觸麗薄膜 411保護層 42上導電膜 43下導電膜 44^ 4 5間隔球 46、46a、46b突狀結構^_ Film 12 Upper Conductive Film 13 Lower Conductive Film 14 Transparent Substrate 141 Space Ball 142 Soft Cable 21 Po Long Substrate 22 Conductive Layer 23 Electrode Layer 24 Protective Layer 31, 3 2 Infrared Emitter 3 3, 3 4 Receiver 41 Touch The conductive film 43 under the conductive film 43 on the protective layer 42 of the 411 film 441 has a protruding structure of the spacer balls 46, 46a, 46b.