201102903 六、發明說明： 【發明所屬之技術領域】 本發明是關於用於LCD面板等顯示面板的觸控式屏 幕及其製造方法的技術。 【先前技術】 LCD是液晶顯示裝置（Liquid Crystal Display)的縮 • 寫，由在2塊玻璃板之間，即，在LCD面板(LCD Panel) 之間注入液晶的結構構成。因此’如在此液晶之間施加電 壓’各液晶分子排列則會發生變化，在此時出現的光學折 射率的變化下，使LCD面板上顯示出多種文字或影像。 這種LCD通常使用1.5〜2 V的電源工作，耗電非常小， 被廣泛應用於手機或PDA(個人數字助理）、MP3、計算機 _示器、TV等。 % 另一方面，LCD屏幕(LCD window)是指爲保護所述BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a touch screen for a display panel such as an LCD panel and a method of manufacturing the same. [Prior Art] The LCD is a reduction of a liquid crystal display device, and is constituted by a structure in which liquid crystal is injected between two glass plates, that is, between LCD panels. Therefore, if the voltage is applied between the liquid crystals, the arrangement of the liquid crystal molecules changes, and at the time of the change in the optical refractive index, a plurality of characters or images are displayed on the LCD panel. This type of LCD usually operates with a power supply of 1.5 to 2 V and consumes very little power. It is widely used in mobile phones or PDAs (Personal Digital Assistants), MP3s, computer monitors, TVs, etc. %, on the other hand, the LCD screen refers to the protection
LcD面板不受外部衝擊而安裝於LCD面板外面的透明保 護窗，主要由丙晞酸（Aery 1)樹脂或PC(poly carbonate’聚 \酸酯）、PET(polyethylene terephthalate，聚對苯二甲酸 己二醇酯）等合成樹脂基板及鋼化玻璃構成。隨著近來數 子産業的蓬勃發展’各種數字電子設備日益小型化及輕巧 (slim)化’所述LCD面板及LCD屏幕的厚度也越來越薄。 在此趨勢下’以往進行了各種研究，基板的厚度被限 201102903 定在盡可能薄的範圍内，在使屏幕與帶電氣特性的薄^# 片進行壓合（Lamination)的同時，獲得所需的厚度。作兩 個以上的周期性圖形（periodic pattern)重疊時，會出現幹 擾條紋（interference fringe)現象，而且由於四刻與凸列也 會導致幹擾條紋，同時還存在發生氣泡現象等問題。 【發明内容】 鲁 本發明正疋爲了解決所述以往技術的問題而提出 的，目的在於提供一種觸控式屏幕及其製造方法，通過在 LCD面板上塗敷液態UV姑合劑’使屏幕與帶有電氣特性 的薄膜膠片層疊粘合，只憑借限定的厚度，便可以有六文地 保護LCD面板不受外部衝擊，盡可能地實現幹擾條紋^象 的最小化。特別是所述屏幕與帶電氣特性的薄膜膠片在層 4時，屏幕層與帶電氣雜的_膠片層之心會留有二 小氣泡’並具有卓越的透明度及粘合強度。 爲實現上述目的，特此發明爲操作LCD面板而安襄於 所述LCD面板上_控式屏幕，本發明所提供的觸控式屏 幕由厚度爲200〜2000州的屏暮、 开參、均勻地塗敷於所述屏幕 的UV粘合劑塗敷層、粘合於所沭τ β 34 UV粘合劑塗敷層上的薄 犋膠片構成。上述薄膜膠片厚;# 予度Μ200〜2〇〇〇泖為佳，帶 有電阻值。此時，還可以使用鹛女兩 ^ ^ ’有電阻值的玻璃取代薄膜 201102903 膠片。 在本發明的最佳實施例中，所述屏幕以使用合成樹脂 或鋼化玻璃為佳。 在本發明的最佳實施例中，所述uv粘合劑以使用丙 烯酸系或環氧樹脂系UV粘合劑為佳。 另外，對於製造爲操作LCD面板而安裝於所述LCD面 板上的觸控式屏幕的方法，其製造步驟具體特徵如下： 步驟（a)，準備厚度在200〜2000抑的屏幕及厚度在200 〜2000/zm，且帶有電器電阻值的薄膜膠片。 步驟(b)，在步驟（a)所準備的屏幕或薄膜膠片上，或 者屏幕及薄膜膠片上同時均勻地凃上UV粘合劑，其凃層 厚度為5燜〜50燜。凃上粘合劑后，粘合屏幕及薄膜膠片， 製成屏幕及薄膜膠片的層叠体。 鲁 步驟（c)，向步驟（b)中製成的層叠体施加塵力，自上 述層叠体的長度方向中心部向外側依次且連續施加壓力。 步驟（d)，通過紫外線照射，硬化步驟（c)的生成物。 步驟（e)，清洗步驟（d)中硬化的生成物，製造觸控式v 屏幕。 在步驟（b)中，所使用的UV粘合劑爲丙烯酸系或環氧 樹脂系UV粘合劑。 201102903 在步驟（C)中，加壓方法是使用具有以中心部為准且 向外側彎曲結構的滾筒。 在本發明的最佳實施例中，上述滾筒由彈性體構成， 以上述層疊體的接觸中心爲準，向兩侧施壓，其傾斜角（α) 角度〇。〜5。為佳，更佳的傾斜角（α)角度為〇 2。〜5。。同時， 所述滾筒最好以毫米和微米（um)單位進行獨立操作。 【貫施方式】 接下來參照附圖，進一步詳細說明本發明。 圖1顯示了本發明的觸控式屏幕4〇製作前的狀態，圖2 顯示了帶電阻值的薄膜膠片的斷差程度。 如圖1至圖4所示，本發明爲操面板而安裝於 LCD面板上的觸控式屏幕1〇由既定厚度的屏幕4〇、均勻地 • 塗敷於所述屏幕40的UV粘合劑塗敷層30、粘合於所述uv 粘合劑塗敷層上的帶電阻值的薄膜膠片（以下稱“電阻性 薄膜膠片20”)構成。 本發明中使用的屏幕40,只要是以往用於製造屏幕的 合成樹脂即可，但最好是使用丙烯酸樹脂或pc、pET、鋼 化玻璃等。屏幕40的厚度可根據LCD面板尺寸或安裝該 LCD面板的電子設備特性或設計而進行多種變更，但厚度 以200〜2000//m為佳。 201102903 在本發明中，粘合所述屏幕40與電阻性薄膜膠片20 的粘合劑只有在各自的表面能量值上，才會有效粘合，只 要是其粘合層内部不發生氣泡、不防礙屏幕整體透明度及 折射率的粘合劑即可，但最好使用UV粘合劑。 UV枯合劑是一種厭氧枯合劑（anaerobic adhesives)， 又稱爲紫外線硬化粘合劑。通常在硬化之前保持液態，照 φ 射紫外線後，粘合劑内含有的光反應起始劑開始反應，短 時間内固化，屏幕與電阻性薄膜.膠片20的表面能量相似， 此粘合劑非常適用于屏幕與電阻性薄膜膠片20。在本發明 中，UV粘合劑使用丙烯酸系或環氧樹脂系UV粘合劑。 UV粘合劑塗敷層30的厚度爲5〜50//Π1，如果厚度低於 5卿，存在粘合力弱化的隱患，相反，如果高於5〇燜，不 _ 僅不旎大幅度提咼钻合力，反而會發生勒合層外的溢流現 象（overflow)，或是UV粘合劑塗敷層3〇殘留微小氣泡， 因周圍的微小異物，造成UV枯合劑塗敷層3〇的塗敷狀態 難以水平化，存在造成嚴重幹擾條紋現象的隱患。 最後，覆蓋於UV粘合劑塗敷層3〇表面的屏幕層由厚 度爲200〜2000,的薄板破璃形成，此時，屏幕層的厚度 如果低於200㈣，則會出現嚴重的彎曲現象，存在無法充 刀發揮強化膜功能的隱患。相反，如果高於2〇〇〇//m，屏幕 8 [S] 201102903 整體厚度過厚，可能造成有違LCD輕巧化趨勢的不良結 果。 本發明中，製造觸控式屏幕10的方法具體如下： 首先，準備厚度爲200〜2000/ΛΠ的屏幕和厚度爲200〜 2000娜的帶電阻值的薄膜膠片。此時，爲使帶電阻值的薄 膜膠片（電阻性薄膜膠片20)只粘合於屏幕的、具有既定大 φ 小與厚度的合成樹脂及鋼化玻璃的一部分，可以把電阻性 薄膜膠片20製作得比屏幕稍大或稍小。而且可以有一突出 的外框體以容納UV枯合劑塗敷層3〇。 然後，在屏幕或電阻性薄膜膠片2〇中的某一面或兩面 上塗敷uv枯合劑。此時，塗敷方法是在無塵室⑽⑽r〇〇m) 内，把屏幕或電阻性薄膜膠片20固定於夾具(jig)上，使用 液體分注器或絲網印刷塗敷!；乂粘合劑即可。絲網印刷的 藝方法雖然可以調整一定的塗敷厚度’但在下-工序中，會 給去除微小氣泡帶來許多困難。不過，這種方法的粘合劑 損失少。在使用液體分注器的情況下，在一定位置塗敷粘 合劑，利用滚筒50—面調整粘合劑厚度，一面去除微小氣 泡。使用液體分注器的優點是非常有利於選定位置的，因 而可以確保塗敷的作業性及便利性。合劑的塗敷厚 度以5〜50州為佳。不過，在塗敷過程中，注意1；¥粘合劑 201102903 UV粘合劑最好使用 不要暴路於紫外線下。在本發明中 黏度爲100〜6000(^5的口¥粘合劑。 接下來是對上述工序的觸控式屏幕10層疊體施加壓 力。此時，從所述層疊體的長度方向中心部向外部依次且 連續施加壓力。爲從層疊體的長度方向中心部向外部依次 而連續地施加壓力，使用中心部向外側彎曲的滾筒50(參The transparent protective window of the LcD panel mounted on the outside of the LCD panel without external impact, mainly composed of Aery 1 resin or PC (poly carbonate 'polyester'), PET (polyethylene terephthalate, polyethylene terephthalate) A synthetic resin substrate such as a glycol ester or the like and a tempered glass. With the recent boom in the digital industry, the variety of digital electronic devices has become increasingly small and slim, and the thickness of the LCD panel and LCD screen has become thinner and thinner. Under this trend, various studies have been conducted in the past, and the thickness of the substrate is limited to the thinnest range, and the screen is made to be laminated with a thin film with electrical characteristics. thickness of. When two or more periodic patterns overlap, interference fringe occurs, and interference fringes are caused by four moments and protrusions, and bubbles are also generated. SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the prior art, and aims to provide a touch screen and a manufacturing method thereof, by applying a liquid UV compound agent on the LCD panel to make the screen The thin film of electrical characteristics is laminated and bonded, and by virtue of the limited thickness, the LCD panel can be protected from external impacts, and the interference fringes can be minimized as much as possible. In particular, when the screen and the film film with electrical characteristics are in the layer 4, the center of the screen layer and the layer of the electrically-elected film layer will have two small bubbles, and have excellent transparency and adhesive strength. In order to achieve the above object, the present invention is designed to operate an LCD panel and is mounted on the LCD panel. The touch screen provided by the present invention is made up of screens of 200 to 2000 degrees, open, and evenly. A UV adhesive coating applied to the screen, a thin film attached to the βββ 34 UV adhesive coating layer. The above film film is thick; #予度Μ200~2〇〇〇泖 is better, with a resistance value. At this time, it is also possible to replace the film 201102903 film with a prosthetic two ^ ^ 'resistive glass. In a preferred embodiment of the invention, the screen is preferably a synthetic resin or tempered glass. In a preferred embodiment of the invention, the uv adhesive is preferably an acrylic or epoxy based UV adhesive. In addition, for the method of manufacturing the touch screen mounted on the LCD panel for operating the LCD panel, the specific steps of the manufacturing steps are as follows: Step (a), preparing a screen having a thickness of 200 to 2000 and a thickness of 200 〜 2000/zm, film film with electrical resistance value. In step (b), the UV adhesive is uniformly applied to the screen or film film prepared in the step (a), or the screen and the film film, and has a coating thickness of 5 焖 50 50 。. After the adhesive is applied, the screen and the film film are bonded to form a laminate of the screen and the film film. In the step (c), the dust is applied to the laminate produced in the step (b), and pressure is continuously applied from the center portion in the longitudinal direction of the laminate to the outside. In the step (d), the product of the step (c) is hardened by ultraviolet irradiation. In step (e), the hardened product in the step (d) is cleaned to produce a touch-sensitive v-screen. In the step (b), the UV adhesive used is an acrylic or epoxy resin UV adhesive. 201102903 In the step (C), the pressurizing method is to use a drum having a structure bent to the outside as a center portion. In a preferred embodiment of the present invention, the drum is made of an elastic body, and is pressed against both sides with respect to the contact center of the laminated body, and has an inclination angle (α) angle 〇. ~5. Preferably, the preferred tilt angle (α) angle is 〇 2. ~5. . At the same time, the drum is preferably operated independently in millimeters and micrometers (um). [Complex Mode] Next, the present invention will be described in further detail with reference to the accompanying drawings. Fig. 1 shows the state before the touch screen 4 of the present invention is produced, and Fig. 2 shows the degree of the difference of the film film with the resistance value. As shown in FIG. 1 to FIG. 4, the touch screen 1 mounted on the LCD panel of the present invention is a UV adhesive which is uniformly applied to the screen 40 by a screen of a predetermined thickness. The coating layer 30 is formed of a film film having a resistance value (hereinafter referred to as "resistive film film 20") adhered to the uv adhesive coating layer. The screen 40 used in the present invention may be any synthetic resin conventionally used for manufacturing a screen, but it is preferable to use acrylic resin, pc, pET, tempered glass or the like. The thickness of the screen 40 can be variously changed depending on the size of the LCD panel or the characteristics or design of the electronic device on which the LCD panel is mounted, but the thickness is preferably 200 to 2000//m. 201102903 In the present invention, the adhesive bonding the screen 40 and the resistive film film 20 can be effectively bonded only at the respective surface energy values, as long as bubbles do not occur inside the adhesive layer. An adhesive that impedes the overall transparency and refractive index of the screen can be used, but it is preferred to use a UV adhesive. UV dry glue is an anaerobic adhesives, also known as UV hardening adhesives. Usually, it is kept in a liquid state before hardening. After the ultraviolet ray is emitted, the photoreactive initiator contained in the binder starts to react and solidifies in a short time. The screen and the resistive film. The surface energy of the film 20 is similar, and the adhesive is very Suitable for screen and resistive film film 20. In the present invention, the UV adhesive uses an acrylic or epoxy-based UV adhesive. The thickness of the UV adhesive coating layer 30 is 5 to 50//Π1. If the thickness is less than 5 qing, there is a hidden danger of weakening of the adhesive force. On the contrary, if it is higher than 5 〇焖, it is not 旎If the boring force is combined, the overflow phenomenon outside the layer may occur, or the micro-bubble may remain in the UV adhesive coating layer 3, and the UV-drying agent coating layer may be caused by the tiny foreign matter around. The coating state is difficult to level, and there is a hidden danger that causes serious interference with the streaking phenomenon. Finally, the screen layer covering the surface of the UV adhesive coating layer 3 is formed by a thin plate having a thickness of 200 to 2000. At this time, if the thickness of the screen layer is less than 200 (four), severe bending phenomenon may occur. There is a hidden danger that the function of the reinforced membrane cannot be performed. On the contrary, if it is higher than 2〇〇〇//m, the overall thickness of the screen 8 [S] 201102903 is too thick, which may cause a bad result that is contrary to the trend of LCD lightness. In the present invention, the method of manufacturing the touch screen 10 is specifically as follows: First, a screen having a thickness of 200 to 2000 Å and a film film having a resistance value of 200 to 2,000 Å are prepared. In this case, in order to bond the film film (resistive film film 20) having a resistance value only to a portion of the synthetic resin and tempered glass having a predetermined large φ small and thick thickness, the resistive film film 20 can be produced. It is slightly larger or smaller than the screen. Further, there may be a protruding outer frame to accommodate the UV dry coating layer 3 . Then, a uv dry agent is applied to one or both of the screen or the resistive film film 2 . At this time, the coating method is to fix the screen or the resistive film film 20 to the jig in the clean room (10) (10) (r)m), and apply it by using a liquid dispenser or screen printing! The agent can be. Although the art of screen printing can adjust a certain coating thickness, it causes many difficulties in removing microbubbles in the lower process. However, this method has less adhesive loss. In the case of using a liquid dispenser, the adhesive is applied at a predetermined position, and the thickness of the adhesive is adjusted by the surface of the roller 50 to remove minute bubbles. The advantage of using a liquid dispenser is that it is very advantageous for the selected position, thereby ensuring the workability and convenience of the coating. The coating thickness of the mixture is preferably 5 to 50 degrees. However, during the coating process, pay attention to 1; ¥ adhesive 201102903 UV adhesive is best used Do not violently under ultraviolet light. In the present invention, the viscosity of the adhesive is from 100 to 6,000 (5). Next, pressure is applied to the laminated body of the touch panel 10 in the above-described process. At this time, from the center portion in the longitudinal direction of the laminate The pressure is continuously applied to the outside in order, and the pressure is continuously applied from the center portion in the longitudinal direction of the laminate to the outside, and the roller 50 that is bent outward is used.
照圖5)。更詳細地說，使用的滾筒50不是平直的，最好是 中央部比兩侧面高❺。在滾筒5G的不同位置，實際上施加 的垂直壓力並不固^。因此，爲解決此類問題，滾筒％ 由彈性體構成，滾筒5G中央部與滾筒50兩側面形成〇·2〜5 度的傾角⑷(參照圖5)。此外，爲提高操作便利性及塗敷 凡吳性’滾筒50最好以毫米單位或微米單位進行獨立操 作0 最後’向7L全去除微小氣泡的枯合劑塗敷層照射紫外 線使UV枯合劑硬化。此時，紫外線的照度或能量因 祐合劑塗敷層30厚度而異，紫外綫亮度以5G〜·謂為 佳通過足夠時間的照射，使光起完全反應，達到完全硬 般而σ，硬化條件因照度和時間而異。例如，在完 成硬化的條件下，如果能量需要臟m!，那麼，如果照度 是5〇mW ’則時間需要2〇秒以上，而如果照度是議讀， 201102903 那麼10秒以上的時間便足夠了。這樣一來，uv粘合劑塗 敷層30完全硬化，屏幕與帶電氣特性的薄膜膠片通過壓合 (Lamination)，從而完成了由本發明而製造成的觸控式屏 幕10。 以上參照本發明最佳實施例進行了說明，但顯而易 見，只要是在相應技術領域具有熟練從業技術的操作人 員，便可以在不超出以下權利要求書記載的本發明的思想 及領域的範圍内，對本發明進行多種修改及變形。 【圖式簡單說明】 圖1是簡要顯示本發明的觸控式屏幕層疊結構的附See Figure 5). In more detail, the roller 50 used is not straight, and it is preferable that the center portion is higher than the both sides. The actual applied vertical pressure is not fixed at different positions of the drum 5G. Therefore, in order to solve such a problem, the roller % is composed of an elastic body, and the center portion of the drum 5G and the drum 50 form an inclination angle (4) of 2 to 5 degrees (see Fig. 5). Further, in order to improve the handling convenience and to apply the sturdy 'roller 50, it is preferable to perform the independent operation in units of millimeters or micrometers. 0 Finally, the UV-curable agent is cured by irradiating ultraviolet rays to the coating agent layer of 7L to remove fine bubbles. At this time, the illuminance or energy of the ultraviolet ray varies depending on the thickness of the coating layer 30, and the ultraviolet ray brightness is preferably 5 G ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ Illumination and time vary. For example, if the energy needs to be dirty m! under the condition of hardening, then if the illuminance is 5〇mW 'the time will take more than 2 sec seconds, and if the illuminance is for reading, 201102903 then 10 seconds or more will suffice. . Thus, the uv adhesive coating layer 30 is completely hardened, and the screen and the film film having electrical characteristics are laminated by lamination, thereby completing the touch screen 10 manufactured by the present invention. The invention has been described with reference to the preferred embodiments of the present invention, but it is obvious that the skilled person skilled in the art will be able to do so without departing from the spirit and scope of the invention as described in the following claims. Various modifications and variations of the present invention are possible. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view schematically showing an attached structure of a touch screen of the present invention.
圖2是圖1所示觸控式屏幕的分解斜視圖。 圖3是圖2的A-A截面圖。 圖4是簡要顯示按照本發明的方法對觸控式屏幕施加 壓力的示例圖。 圖5是顯示觸控式屏幕與滾筒接觸角的附圖。 40 屏幕 50 滾筒 A 觸控式屏幕面與滾筒夾角 T 斷差 【主要元件符號說明】 10 觸控式屏幕 20 電阻性薄膜膠片 22 突出的外框體 30 UV粘合劑塗敷層2 is an exploded perspective view of the touch screen of FIG. 1. Fig. 3 is a cross-sectional view taken along line A-A of Fig. 2; Figure 4 is a diagrammatic view showing schematically the application of pressure to a touch screen in accordance with the method of the present invention. Fig. 5 is a view showing a contact angle of a touch screen to a drum. 40 Screen 50 Roller A Touch screen surface to drum angle T Break [Main component symbol description] 10 Touch screen 20 Resistive film film 22 Outer frame 30 UV adhesive coating