201128257 六、發明說明： 【發明所屬之技術領域】 ⑽)1] 本發明有關一種觸控面板結構’尤指一種實質透明且可 配置於一顯示器使用，以便使用者進行互動式輸入操作 的觸控面板。 【先前技術】 [0002] 按，近年來觸控感應裝置有關的科技突飛猛進，各式電 子裝置已廣泛應用觸控技術作為其輸入方式，藉此，使 用者只要以手指或觸控筆接近或輕觸觸控顯示器面板， 即可閱讀資訊或進行資料的傳輸，並省去傳統電子裝置 必須配置按鈕、键盤或滑桿等的繁複。觸控面板的出現 ，可讓使用者與電子裝置溝通、互動的過程更為簡單、 人性化，並節省輸入工具所需的存;收納空間。因此 ，觸控面板已廣泛地應用於遊戲機、遊客導覽系統、自 動櫃員機、筆記型電腦、銷售點終端機及工業控制系統 等。 〇 [0003]觸控面板依其感測原理的不同主要可分為電阻式、電容 式、紅外線式以及超音波式等’其中紅外線式與超音波 式觸控面板係於螢幕之X軸及γ軸之一侧設置紅外線或超 音波的發射源，並於另一侧設置接收源，當使用者接觸 螢幕便會干掻紅外線或超音波的訊號’藉以測量與確認 又干擾的位置座標而完成定位；電阻式觸控面板係由上 下兩層氧化銦錫（Indium tin oxide，ΙΤΟ)導電薄膜疊 s而成，當外力接觸致使上下兩電極導通後’便可準確 將接觸位置定位出來；電容式觸控面板則由表面設置有 099104571 表·?編號Α〇1〇ι 第3頁/共16頁 0992008607-0 201128257 [0004] [0005] [0006] 099104571 感測電極的透明玻璃所構成，其四周角落提供電壓而於 玻璃表面形成均勻電場，並利用使用者手指與電場之間 的靜電反應所產生的電容變化來檢測其輪入座標。 請參閱「圖1」’其為習知電容式之觸控面板結構的示意 圖。如圖所示，習知之觸控面板結構1包含一基板3、一 感測層 4(sensor layer)、一接地層 5(shielding layer)以及一防護鏡片6(c〇ver lens)，該感測層彳形 成於該基板3之一侧的表面，其包含可感測义軸向及γ軸向 的感測電極（圖中未示）；該防護鏡片6則藉一黏著層 7(adhesive iayer)貼合於該感測層4，用以讓使用者 β手指接近或觸摸，其涵蓋的面積範圍可大於觸控面板 的感測區域。該接地層5則形威於該基板3所欲貼附的一 液晶顯不器模組2(LCD module,簡稱LCM)的一側之表 面，用以阻隔來自該液晶顯示器模組2的電氣干擾或電磁 雜訊，以避免該些干擾或雜訊影響感測層4的感應效果。 其中，該接地層5係於基板3接近液晶顯示器模組2表面鍍 製或沉積一透明導電材質而形成，因成膜溫度較高、良 率不易控制，且需要額外製程及設備來濺鍍 (sputtering)或沉積（depositi〇n)，於設備及製程上 的成本較咼，不利於觸控面板的成本樽節。 【發明内容】 本發明之目的在於解決上述問題’進而提出一種結構簡 單、成本較低且製作容易的觸控面板結構，透過本發明 之觸控面板結構，可避免因鍍膜沉積、鍍膜接地層而導 致成本上升、良率不足的問題。 表單編號A0101 第4頁/妓16頁 0992008607-0 201128257 [0007] 為了達成前述目的，本發明提供之一種觸控面板結構包 含一透明基板、一感測層以及一接地層組；其中，該感 測層形成於該透明基板之一表面，該接地層組則包含一 膠合層、一絕緣層與一導電層，且該絕緣層位於該膠合 層與該導電層之間。該膠合層用以將該接地層組貼合於 該透明基板接近顯示器模組的一侧，而該導電層則電性 連接一低電壓準位，以提供該觸控面板結構設置於顯示 器模組的屏蔽效果。 ❹ 剛 在一實施例中，該接地層組藉該膠合層貼合於該感測層 ;在另一實施例中，該接地層組藉該膠合層貼合於該透 明基板相對於該感測層的另一表面。 [0009] 透過本發明，無須再透過高溫濺鍍或沉積方式形成一接 地層，因此可節省觸控面板的製造成本與增加製造速度 ，同時，該接地層組亦可提供一保護、屏蔽作用，降低 來自於顯示器模組的電磁干擾。該有關本發明的詳細技 術内容及不同實施例，配合圖式說明如後。 ❾ [0010] 【實施方式】 有關本發明之詳細說明及技術内容，現配合圖式說明如 下。本發明之觸控面板結構可應用於電容式的觸控面板 ，但不為其所限。再者，須說明的是，圖式及元件編號 僅為示意說明之用，並不代表實際的尺寸與比例；且為 求圖面的簡潔及容易瞭解，在不影響本發明的實施與理 解下，部分圖式亦省略習知元件的繪製。 [0011] 請參閱「圖2」所示，其為本發明第一實施例之結構示意 099104571 圖，如圖所示：本發明提出之觸控面板結構10，包含一 表單編號A0101 第5頁/共16頁 0992008607-0 201128257 透明基板11、一感測層12、一接地層組13以及—防護鏡 片14。該感測層1 2形成於該透明基板π之一表面，其可 為多層結構，包含可感測X軸向及γ轴向的感測電極（圖中 未示）’該防護鏡片1 4則藉一黏著層1 5貼合於該感測層1 2 ’用以讓使用者以手指或觸控筆接近或者碰觸，並提供 一保護效果，以避免損傷感測層；防護鏡片丨4涵蓋的面 積範圍可大於觸控面板的感測區域，並未有限制。該接 地層組13則形成於該透明基板11對應所欲貼附液晶顯示 器模組2的一表面，該接地層組13可為一外貼式的接地層 組13，可利用外加貼附的方式，省去鍍膜或沉積導電接 地材質耗費的時間及設備、製造成本β [0012] [0013] 在上述一實施例中，該透明基板11或/及該防護鏡片14可 為一玻璃，且該透明基板11或/及該防護鏡片14可經過光 學處理而帶有單層或多層特定光學性質薄膜（圖中未示） ’例如經過防反射（anti-re fleet ion)處理、防眩光 Unti-glare)處理、防汙潰（anti_smudge)處理。 该接地層組13包含一膠合層131、一絕緣層132以及一導 電層133，其中該絕緣層132位於該膠合層131及該導電 層133之間；該膠合層131為透明或半透明材質，且具黏 性，用以將該接地層組丨3貼合於該透明基板丨丨；該絕緣 層13 2可為透明或半透明的一軟性高分子材質，例如為聚 對苯二甲酸乙二醇酯（Polyethylene terephthalate, PET)，但不以所舉例者為限；更進一步地，該絕緣層132 可藉由材料選擇，或是經過功能、光學處理，致使其具 備特殊光學性質。進一步舉例說明，該絕緣層i 3 2可經過 099104571 表單編號A0101 第6頁/共16頁 0992008607-0 201128257 霧化或抗眩光處理’具有遮蔽部分感測層1 2的電路佈線 的效果。該導電層133電性連接至一低電壓準位，例如： 連接於一觸控面板驅動電子系統之低電壓準位或接地， 以提供一屏蔽（shielding)效果，用以阻隔來自該液晶 顯示器模組2的電氣干擾或電磁雜訊，以避免該些干擾或 雜訊影響感測層12的感測結果。 [0014] Ο 在上述一實施例中，該導電層133為一透明導電材質，例 如為透明導電氧化物（transparent conductive oxide, TCO) ， 舉例如 .氧化銅錫 （indium tin oxide, iτο)形成之導電玻璃；於一實施例中，該導電層133的片 .：：'；：：. . 電阻（sheet resistance)·可小於5〇〇(〇hms/sq)，於 另一實施例中，該接地層組13之厚度介於1〇〇至looo微 米（β m)之間。201128257 VI. Description of the Invention: [Technical Field of the Invention] (10)) 1] The present invention relates to a touch panel structure, particularly a touch that is substantially transparent and configurable for use in a display for interactive input operation by a user. panel. [Previous Technology] [0002] In recent years, the technology related to touch sensing devices has advanced by leaps and bounds. Various electronic devices have widely used touch technology as their input method, whereby the user can approach or light with a finger or a stylus. Touching the touch display panel allows you to read information or transfer data, eliminating the need for traditional electronic devices to be configured with buttons, keyboards or sliders. The appearance of the touch panel allows the user to communicate and interact with the electronic device to be simpler and more user-friendly, and saves the storage required for the input tool; Therefore, touch panels have been widely used in game consoles, tourist navigation systems, automated teller machines, notebook computers, point-of-sale terminals, and industrial control systems. 〇[0003] Touch panel can be divided into resistive, capacitive, infrared, and ultrasonic based on its sensing principle. The infrared and ultrasonic touch panels are attached to the X-axis and γ of the screen. One side of the shaft is provided with an infrared or ultrasonic source, and a receiving source is provided on the other side. When the user touches the screen, the infrared or ultrasonic signal is dried, and the position coordinates are measured and confirmed to interfere with the position coordinate. The resistive touch panel is made up of two layers of indium tin oxide (Indium tin oxide) conductive film stacks. When the external force contacts, the upper and lower electrodes are turned on, the contact position can be accurately positioned; the capacitive touch The control panel is provided with a surface of 099104571. The number is Α〇1〇ι Page 3/16 pages 0992008607-0 201128257 [0004] [0005] [0006] 099104571 The transparent glass of the sensing electrode is formed around the corner A voltage is applied to form a uniform electric field on the surface of the glass, and a change in capacitance caused by an electrostatic reaction between the user's finger and the electric field is used to detect its wheeled coordinates. Please refer to "FIG. 1", which is a schematic diagram of a conventional capacitive touch panel structure. As shown in the figure, the conventional touch panel structure 1 includes a substrate 3, a sensor layer 4, a shielding layer, and a protective lens 6 (c〇ver lens). The layer is formed on a surface of one side of the substrate 3, and includes a sensing electrode (not shown) capable of sensing the axial direction and the γ axis; the protective lens 6 is bonded by an adhesive layer 7 (adhesive iayer) The sensing layer 4 is attached to the user to approach or touch the β finger, and the area covered by the touch panel may be larger than the sensing area of the touch panel. The ground layer 5 is formed on the surface of one side of the liquid crystal display module 2 (LCD), which is to be attached to the substrate 3, for blocking electrical interference from the liquid crystal display module 2. Or electromagnetic noise to avoid the interference or noise affecting the sensing effect of the sensing layer 4. The ground layer 5 is formed by plating or depositing a transparent conductive material on the surface of the substrate 3 near the liquid crystal display module 2, because the film forming temperature is high, the yield is difficult to control, and additional processes and equipment are needed for sputtering ( Sputtering) or deposition (depositi〇n), the cost of equipment and process is relatively low, which is not conducive to the cost of the touch panel. SUMMARY OF THE INVENTION The object of the present invention is to solve the above problems. Further, a touch panel structure having a simple structure, low cost, and easy fabrication is proposed. With the touch panel structure of the present invention, the deposition of the coating film and the grounding layer of the coating layer can be avoided. The problem of rising costs and insufficient yield. Form No. A0101, page 4 / page 16 0992008607-0 201128257 [0007] In order to achieve the foregoing objective, the present invention provides a touch panel structure including a transparent substrate, a sensing layer, and a ground layer group; The measuring layer is formed on a surface of the transparent substrate, and the grounding layer group comprises a bonding layer, an insulating layer and a conductive layer, and the insulating layer is located between the bonding layer and the conductive layer. The bonding layer is configured to be attached to the side of the transparent substrate adjacent to the display module, and the conductive layer is electrically connected to a low voltage level to provide the touch panel structure on the display module. Shielding effect. In an embodiment, the ground layer layer is attached to the sensing layer by the bonding layer; in another embodiment, the ground layer group is bonded to the transparent substrate by the bonding layer relative to the sensing layer. The other surface of the layer. [0009] Through the present invention, it is not necessary to form a ground layer through high-temperature sputtering or deposition, thereby saving the manufacturing cost of the touch panel and increasing the manufacturing speed. At the same time, the ground layer group can also provide a protection and shielding function. Reduce electromagnetic interference from the display module. The detailed technical content and different embodiments of the present invention will be described later in conjunction with the drawings. [Embodiment] The detailed description and technical contents of the present invention will now be described with reference to the drawings. The touch panel structure of the present invention can be applied to a capacitive touch panel, but is not limited thereto. In addition, it should be noted that the drawings and component numbers are for illustrative purposes only and do not represent actual dimensions and proportions; and that the drawings are simple and easy to understand without affecting the implementation and understanding of the present invention. Part of the drawing also omits the drawing of conventional components. [0011] Please refer to FIG. 2, which is a schematic diagram of the structure of the first embodiment of the present invention, shown as 099104571. As shown in the figure, the touch panel structure 10 of the present invention includes a form number A0101, page 5 / A total of 16 pages 0992008607-0 201128257 transparent substrate 11, a sensing layer 12, a ground layer set 13 and - protective lens 14. The sensing layer 12 is formed on one surface of the transparent substrate π, which may be a multi-layer structure including a sensing electrode (not shown) capable of sensing the X-axis and the γ-axis. The adhesive layer 1 5 is attached to the sensing layer 1 2 ' for the user to approach or touch with a finger or a stylus, and provides a protective effect to avoid damage to the sensing layer; the protective lens 丨 4 covers The area of the touch panel can be larger than the sensing area of the touch panel, and there is no limitation. The grounding layer group 13 is formed on a surface of the transparent substrate 11 to which the liquid crystal display module 2 is to be attached. The grounding layer group 13 can be an externally-mounted grounding layer group 13 and can be attached by external means. </ RTI> In the above embodiment, the transparent substrate 11 or/and the protective lens 14 may be a glass, and the transparent The substrate 11 or/and the protective lens 14 may be optically treated with a single layer or a plurality of layers of a specific optical property (not shown) 'for example, an anti-reliner treatment, an anti-glare Unti-glare) Treatment, anti-smudge treatment. The grounding layer group 13 includes a bonding layer 131, an insulating layer 132, and a conductive layer 133. The insulating layer 132 is located between the bonding layer 131 and the conductive layer 133. The bonding layer 131 is transparent or translucent. And the adhesive layer is used for bonding the ground layer group 丨3 to the transparent substrate 丨丨; the insulating layer 13 2 may be transparent or translucent, a soft polymer material, for example, polyethylene terephthalate. Polyethylene terephthalate (PET), but not limited to the examples; further, the insulating layer 132 can be selected by materials or functionally and optically treated to have special optical properties. By way of further example, the insulating layer i 3 2 can pass through 099104571 Form No. A0101 Page 6 / Total 16 pages 0992008607-0 201128257 Atomization or anti-glare treatment has the effect of shielding the circuit wiring of the portion of the sensing layer 12. The conductive layer 133 is electrically connected to a low voltage level, for example, connected to a low voltage level or ground of a touch panel driving electronic system to provide a shielding effect for blocking the mode from the liquid crystal display. Group 2 electrical interference or electromagnetic noise to avoid such interference or noise affecting the sensing results of the sensing layer 12. [0014] In the above embodiment, the conductive layer 133 is a transparent conductive material, such as a transparent conductive oxide (TCO), such as indium tin oxide (iτο). Conductive glass; in one embodiment, the sheet of the conductive layer 133.::';::. . sheet resistance may be less than 5 〇〇 (〇hms/sq), in another embodiment, the The thickness of the ground layer group 13 is between 1 loo and looo micrometers (β m).
[0015] G 請再參閱「圖3」所示’其為本發明第二實施例之結構示 意圖，如圖所示：本實施例之觸控面板結構2〇包含一透 明基板21、一感測層22、一接地層組23以及一防護鏡片 24。與上述第一實施例不同的是，本實施例之感測層22 形成於該透明基板21對應液晶顯示器模組2的一表面，該 透明基板21的另一表面則藉一黏著層25貼合該防護鏡片 24。該接地層組13包含一膠合層231、一絕緣層232以及 一導電層233 ’該接地層组13藉該膠合層231貼附於該感 測層22對應所欲貼附液晶顯示器模組2的一表面。本實施 例中’該觸控面板結構20可藉該導電層233阻絕來自液晶 顯視器模組2的電氣干擾或電磁雜訊，該絕緣層232則可 保持該感測層22與該導電層233的電性絕緣狀態，避免該 099104571 表單編號A0101 第7頁/共16頁 0992008607-0 201128257 導電層233干擾具導電性質的感測層22，而影響感測層22 的感測結果。 [0016] 請再參閱「圖4」所示，其為本發明第三實施例之結構示 意圖’如圖所示：本實施例之觸控面板結構3〇包含一透 明基板31、一圖案層34(pattern layer)、一感測層32 、一接地層組33。與前述兩實施例不同的是，本實施例 省略了防護鏡片，因此該透明基板31之一表面定義為觸 控面板之接觸面，用以讓使用者以手指或觸控筆碰觸或 接近。其中，該圖案層34以一框緣（frame)型式形成於 該透明基板31對應液晶顯示器模組2另一表面，該圖案層 34並提供該透明基板31 —周邊圖案（perilihery-1 ike pattern);該感測層32則形成於該透明基板3i包含該圖 案層34的同侧。該接地層組33包含一膠合層331、一絕緣 層332以及一導電層333，該接地層組33可藉該膠合層 331貼附於該感測層32對應液晶顯示器模組2的一表面。 於本實施例中，該觸控面板結構3〇可藉該導電層333阻絕 來自液晶顯視賴組2的電氣干擾或電磁雜訊，該絕緣層 332則可保持該感測層32與該導電層333的電性絕緣狀態 ’避免該導電層333干擾具導電性質的感測層32，而影響 感測層3 2的感測結果。 [0017] 本實施例省略㈣鏡片的優點在於減少防護鏡片以黏著 層黏合時的f程手續，並降低黏合失敗的風險；另一方 面’省略防護鏡片可實質減少觸控面板結構30的總厚度 ，而符合現今電子產品輕薄的特性需求。 [0018] 099104571 須再說明的是，本發明於說明書令所与 表單編號A0101 第8頁/共16頁 表面」係指 0992008607-0 201128257 ❹ [0019] G [0020] 可直接接觸的表面積範圍，而「一侧」或「另一侧」則 未限定直接接觸與否，僅說明位置與方向性。此外，本 發明應用之觸控面板不限於實施例與圖式中的電容式觸 控面板，其他如電阻式觸控面板、電感式觸控面板、音 波式觸控面板以及紅外線式觸控面板均可應用以上所揭 露之結構，故其理應包含於本發明之主張範圍内。惟以 上所述者，僅為本發明之較佳實施例，非欲偈限本發明 專利之專利保護範圍，故舉凡運用本發明說明書及圖式 内容所為之等效變化與修飾，均同理包含於本發明之權 利保護範圍，合予陳明。 【圖式簡單說明】 本發明的實施方式係結合圖式予以描述： 「圖1」為一習知觸控面板結構之示意圖； 「圖2」為本發明觸控面板結構第一實施例之示意圖； 「圖3」為本發明觸控面板結構第二實施例之示意圖；以 及 「圖4」為本發明觸控面板結構第三實施例之示意圖。 【主要元件符號說明】 1，10，20，30 ...觸控面板結構 2 .......液晶顯示器模組 3 .......基板 4，12，22，32 ...感測層 5.......接地層 6，14，2 4 ....防護鏡片 7，15，25 . . . _ 黏著層 099104571 表單編號A0101 第9頁/共16頁 0992008607-0 201128257 11, 21, 31 · · 13， 23， 33 ·. 131， 231， 331 132， 232， 332 133， 233， 333 34...... ••透明基板 ••接地層組 ••膠合層 ••絕緣層 ••導電層 圖案層 099104571 表單編號A0101 第10 1/共16頁 0992008607-0[0015] Please refer to FIG. 3 for a schematic structural view of a second embodiment of the present invention. As shown in the figure, the touch panel structure 2 of the present embodiment includes a transparent substrate 21 and a sensing. Layer 22, a ground layer set 23, and a protective lens 24. Different from the above-mentioned first embodiment, the sensing layer 22 of the present embodiment is formed on a surface of the transparent substrate 21 corresponding to the liquid crystal display module 2, and the other surface of the transparent substrate 21 is bonded by an adhesive layer 25. The protective lens 24. The grounding layer group 13 includes a bonding layer 231, an insulating layer 232, and a conductive layer 233. The grounding layer group 13 is attached to the sensing layer 22 corresponding to the liquid crystal display module 2. a surface. In the embodiment, the touch panel structure 20 can block electrical interference or electromagnetic noise from the liquid crystal display module 2 by the conductive layer 233, and the insulating layer 232 can maintain the sensing layer 22 and the conductive layer. The electrically insulated state of 233 avoids the 099104571 Form No. A0101 Page 7 / Total 16 Pages 0992008607-0 201128257 The conductive layer 233 interferes with the sensing layer 22 having conductive properties, and affects the sensing result of the sensing layer 22. [0016] Please refer to FIG. 4 again, which is a schematic structural view of a third embodiment of the present invention. As shown in the figure, the touch panel structure 3A of the present embodiment includes a transparent substrate 31 and a pattern layer 34. (pattern layer), a sensing layer 32, and a ground layer group 33. Different from the foregoing two embodiments, the protective lens is omitted in the embodiment. Therefore, one surface of the transparent substrate 31 is defined as a contact surface of the touch panel for the user to touch or approach with a finger or a stylus. The pattern layer 34 is formed on the other surface of the transparent substrate 31 corresponding to the liquid crystal display module 2, and the pattern layer 34 provides the transparent substrate 31 (perilihery-1 ike pattern). The sensing layer 32 is formed on the same side of the transparent substrate 3i including the pattern layer 34. The grounding layer set 33 includes a bonding layer 331 , an insulating layer 332 , and a conductive layer 333 . The grounding layer 33 can be attached to a surface of the sensing layer 32 corresponding to the liquid crystal display module 2 . In this embodiment, the touch panel structure 3 can block electrical interference or electromagnetic noise from the liquid crystal display group 2 by the conductive layer 333, and the insulating layer 332 can maintain the sensing layer 32 and the conductive layer. The electrically insulating state of the layer 333 'avoids the conductive layer 333 from interfering with the sensing layer 32 having conductive properties, and affecting the sensing result of the sensing layer 32. [0017] The advantage of omitting the (4) lens in this embodiment is to reduce the f-step procedure of the protective lens when the adhesive layer is adhered, and reduce the risk of adhesive failure; on the other hand, the omission of the protective lens can substantially reduce the total thickness of the touch panel structure 30. In line with the thin and light characteristics of today's electronic products. [0018] 099104571 It should be further noted that the present invention is in the specification and the form number A0101, page 8 / page 16 of the surface refers to 0992008607-0 201128257 ❹ [0019] G [0020] The surface area that can be directly contacted, The "one side" or the "other side" does not limit direct contact or not, only the position and orientation. In addition, the touch panel of the present invention is not limited to the capacitive touch panel in the embodiment and the drawings, and other such as a resistive touch panel, an inductive touch panel, an acoustic wave touch panel, and an infrared touch panel. The structures disclosed above may be applied and are therefore intended to be included within the scope of the invention. The above is only the preferred embodiment of the present invention, and the scope of the patent protection of the present invention is not intended to be limited, and the equivalent changes and modifications of the present invention and the contents of the drawings are equally included. In the scope of the protection of the present invention, it is combined with Chen Ming. BRIEF DESCRIPTION OF THE DRAWINGS The embodiments of the present invention are described in conjunction with the drawings: FIG. 1 is a schematic diagram of a conventional touch panel structure; FIG. 2 is a schematic diagram of a first embodiment of a touch panel structure according to the present invention; FIG. 3 is a schematic view showing a second embodiment of the touch panel structure of the present invention; and FIG. 4 is a schematic view showing a third embodiment of the touch panel structure of the present invention. [Main component symbol description] 1,10,20,30 ...touch panel structure 2 .......liquid crystal display module 3 .......substrate 4,12,22,32 .. Sensing layer 5.. Grounding layer 6, 14, 2 4 .... Protective lens 7, 15, 25 . . . _ Adhesive layer 099104571 Form number A0101 Page 9 / Total 16 pages 0992008607- 0 201128257 11, 21, 31 · · 13, 23, 33 ·. 131, 231, 331 132, 232, 332 133, 233, 333 34... ••Transparent substrate•• Grounding layer set••Gluing Layer••Insulation Layer••Conductive Layer Pattern Layer 099104571 Form No. A0101 Page 10 1/Total 16 Page 0992008607-0