201101357 六、發明說明： 【發明所屬之技術領域】 有提昇 本發明種按鍵結構及其製法，_是有關一種具 的按鍵按壓(click)手感(機械觸感)的按鍵結構及其製法。 【先前技術】 隨著科技的進步與發展，在許多電子設 Ο ❹ 為輸八裝置。特別是行動式電•例如=::= 助理，在這些電子產品巾能騎構，岐便使財輪 資料，_例如簡訊或指令，或是執行各種功能，例如移動游標。使用 者在經常_鍵按壓下’便有提昇按壓手_需求，轉求流 舒適的使用。 & 曾有若干為提昇按鍵按壓手感的發表。例如，日本特開 2。⑻6-216291號揭示-種可動金屬彈片結構，如第丄圖所示，金屬 彈片11具有-半球狀部11A及邊緣部nc，而在其頂部中心部位是 一通孔UB，與彈片_ 15之間教有-小隔片2卜彈片薄膜15 與金屬彈片11細黏著劑如麻納从、跡及丨 狀 ^此使得則賴15本身的上部向上方狄而形成小突起部，°將°小 犬起部作為被按壓部17。可防止小隔片21從彈片薄膜15剝落。因 為有通孔11B的設置’可免除因為按壓時產生的空氣壓縮而帶來的 不好的操作感。然而，如第2麵示之爆賴，其小隔片21是另外 201101357 個別製得的_小恥 g如將PET(pGly(ethyieneterephthaiate)，對 苯二曱酸乙二自旨）、膜沖切(puneh)g|。再將小隔片21放置於金屬 彈片11的半球狀部11A 但是這樣的製造步驟有繁璃 之虞。 因此 ’仍需-種新穎的製造按鍵結構的方法及按鍵結構，以簡 便獲彳于具有良好按壓手感的按鍵結構。 Ο 【發明内容】 本發明之-目的是鄉結觀製造按鍵結構的方法， 以製得具有優異按鍵接乘構。201101357 VI. Description of the Invention: [Technical Field] The present invention relates to a button structure and a method of manufacturing the same, and relates to a button structure having a button press feeling (mechanical touch) and a method of manufacturing the same. [Prior Art] With the advancement and development of technology, in many electronic devices, it is an eight-in-one device. In particular, mobile phones • For example, =::= assistants, in which these electronic product towels can be built, they can make financial information, such as newsletters or instructions, or perform various functions, such as moving cursors. The user has the ability to raise the pressing hand _ demand under the constant _ key press, and the flow is comfortable to use. & There have been a number of publications to improve the feel of button presses. For example, Japan Special 2 . (8) No. 6-216291 discloses a movable metal dome structure. As shown in the figure, the metal dome 11 has a hemispherical portion 11A and an edge portion nc, and a central portion of the top portion is a through hole UB between the elastic sheet -15 The teaching has a small septum 2 b shrapnel film 15 and metal shrapnel 11 fine adhesive such as the numerate, trace and 丨 shape, so that the upper part of the lai 15 itself is formed upwards to form a small protrusion, ° ° ° small dog The part serves as the pressed portion 17. The small spacer 21 can be prevented from peeling off from the elastic film 15. Since the arrangement of the through holes 11B is provided, the bad operational feeling due to the compression of the air generated at the time of pressing can be eliminated. However, as shown in the second aspect, the small septum 21 is separately produced by 201101357. The small shave g such as PET (pGly (ethyieneterephthaiate), terephthalic acid Ethylene), film punching (puneh)g|. Further, the small spacer 21 is placed on the hemispherical portion 11A of the metal dome 11, but such a manufacturing step has a glaze. Therefore, there is still a need for a novel method and button structure for manufacturing a button structure, which is convenient for a button structure having a good pressing feel. Ο SUMMARY OF THE INVENTION The object of the present invention is to provide a method for manufacturing a button structure in order to produce an excellent button-joining structure.
I ❹ *依據本發明之製造按鍵結構的方法，包括下列步驟。提供 片薄膜及-離型紙，彈片薄膜具有一第一表面及一第二表面，第一 表面包括-黏著層，及離贱覆蓋黏著層。對離型紙進行沖切 將離型紙於複數個對應鍵帽預定位置形成複數個可單獨剝離的離型 紙片。於彈片薄膜的第二表面之各對應鍵帽預定位置上分別施加一 ^狀的細蝴爾，編㈣細亀__ ===個凸體㈣ ^的黏者層#，及將複數痛繼片分別黏合至露出的黏 部分。將繼_贱麵，觸則馳的第—表面的 一印刷電路板黏合，俾將此等金屬則_於印猶路板上，祕、 成一半結構。將半結構與-鍵帽部組合，鍵帽部包括複數個鍵帽， 201101357 使此等鍵帽分別位於此等凸體上方。 依據本發明之按鍵_戚品結構:，包括：一印刷電路板，於印刷 電路板上設有複數個接鍵接點：_柄金屬彈片，分別對應設置於 此等按鍵接點上方，於按壓時，受按壓的金屬彈片與其下方的按鍵 接對應導通，彈片薄膜，其覆蓋並黏著此等金屬彈片，並黏著 於印刷電路板上，以將此等金屬彈片固著於印刷電路板上；複數個 〇凸體，、係於彈片薄膜之一表面上形成而固著於此表面， 於此等金屬彈片的上方。 依據本發明之按鍵結構，包括：—印刷電路板，於印刷電路板 上設有複數個按鍵減援__彈片，分別對應設置於此等按 鍵接點上方’於按壓時，.麵__彈片與其下方的按鍵接點對 應導通’-彈片舰，其覆蓋並黏著此等金屬彈片，並黏著於印刷 電路板上，以將此等金屬彈片固著於印刷電路板上；複數個凸體， 〇其係於彈片薄膜之-表面上形成而固著於此表面，並分別位於此等 金屬彈片的上方；及-鍵帽部，位於此等凸體上方。 於本發明中，凸體的形成是直接將一光可固化樹脂材料施加於 彈片薄膜的對應鍵帽預f位置，形成複數個凸點狀物，再經過照光 固化而形成凸體。如此’為德接與彈片薄膜固著，並 不使用黏著劑黏合’可使凸體與卞箱金屬彈片精準對位，沒有組 裝公差的_。在凸體上方_使財按麟，動經由凸體 201101357 而順暢的傳至金屬彈片，沒有施力偏離賴題，目此按壓(click)手 感(彈片變形而回饋至手指的機械觸感)很好。I ❹ * A method of manufacturing a key structure according to the present invention includes the following steps. A film film and a release film are provided. The elastic film has a first surface and a second surface. The first surface comprises an adhesive layer and the adhesive layer is covered by the adhesive layer. Punching the release paper The release paper is formed into a plurality of release sheets that can be separately peeled off at predetermined positions of the plurality of corresponding key caps. Applying a thin shape to each of the corresponding positions of the corresponding key caps on the second surface of the elastic film, respectively, arranging (4) fine 亀__ === convex (4) ^ viscous layer #, and The sheets are bonded to the exposed sticky portions, respectively. A printed circuit board will be bonded to the surface of the first surface of the 贱 贱 surface, and the metal will be _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ The half structure is combined with the - key cap portion, and the key cap portion includes a plurality of key caps, 201101357 such that the key caps are respectively located above the convex bodies. According to the button structure of the present invention, comprising: a printed circuit board, a plurality of key contacts are arranged on the printed circuit board: _ handle metal domes, respectively corresponding to the button contacts, and pressed When the pressed metal dome is connected to the button underneath, the elastic film covers and adheres the metal domes and adheres to the printed circuit board to fix the metal domes on the printed circuit board; A convex body is formed on one surface of the elastic film and fixed on the surface above the metal dome. The button structure according to the present invention comprises: a printed circuit board, and a plurality of button reduction __ shrapnels are arranged on the printed circuit board, respectively corresponding to the top of the button contacts, when pressed, the surface __ shrapnel Corresponding to the button contacts below it, the '- shrapnel ship, which covers and adheres the metal shrapnel and adheres to the printed circuit board to fix the metal shrapnel on the printed circuit board; a plurality of convex bodies, 〇 It is formed on the surface of the elastic film and fixed on the surface, and is respectively located above the metal elastic pieces; and the - key cap portion is located above the convex bodies. In the present invention, the convex body is formed by directly applying a photocurable resin material to the pre-f position of the corresponding key cap of the elastic film, forming a plurality of bumps, and then curing by light to form a convex body. In this way, the joint between the spliced and the shrapnel film and the adhesive without the adhesive can precisely align the convex body with the metal shrapnel of the box, without the tolerance of the assembly. Above the convex body, the money is pressed by the lining, and the movement is smoothly transmitted to the metal shrapnel through the convex body 201101357. There is no force to deviate from the problem, and the click feel (the mechanical feel of the elastic deformation of the finger is deformed) it is good.
【實施方式】 W 依據本發明之製造按齡構_雜之—具體實酬，可如第3 圖的流程圖所示。首先，進行步驟施，提供一彈片薄膜及一離型 紙，彈片薄膜具有—第—表面及—第二表面，第-表面包括-黏著 〇 層’可供黏著金屬彈片及與印刷電路板固著之用；離型紙覆蓋黏著 層’用以在餘步财舰尚不使用_著層部分，以利另一製程 步驟的進仃。織進行轉1G3，麟型紙進行沖切，俾將離型紙 於對應鍵巾i預定位置形成複數個可單獨__型紙片。此等可單 獨剝離的離型紙片’其位置對應於鍵帽位置，其形狀可對應於金屬 彈片，在後續將離型紙片撕離後可靜出的黏著層與 接著。 G ' 〇 —接著’可進行步職5,於彈片細的第二絲之對應鍵帽預 定位置上分別施加-凸點狀的光可固化樹脂材料。施加的方法可使 用例如點膠或傭製程。由於喷膠餘是以噴膠機使时嘴頭將一 預定量的材料喷射出來至彈片薄膜上，因此噴嘴頭的移動速率可相 對較點膠製程使用的轉機的點膠頭快速，而使得製雜省時。光 可固化樹脂材料可為-般可做為凸體材料者，可考慮内聚力及黏性 搭配選用，以在施加於索___良好的凸點狀物。然後進行 步驟107 ’將鱗凸點狀的光可固化_材料經職細化而形成 6 201101357 複數個凸體。雖然於此步驟中， 表面，其與彈片薄膜所點著的表^一立置為彈片薄膜的第二 方面，亦不排除可將凸體形成表:一面，但於本發明之另一 表面為同-面。 、表面’而與彈片薄膜所黏著的 接著，進行步驟109，將離編剝 ;層，及將複數個金屬彈片分娜合至 ο 著層侧輪1^=2將剩餘的離型紙獅，藉由黏 路板上」 也將金屬彈㈣著於印刷電 敎裝品結構。再將—鍵帽層與按鍵半成品結 冓、，、裝，使鍵帽層的鍵帽部分別對應位於 可為可撓性印用丨雷 .、體上方。印刷電路板 士朦2 各部件之間的組裝與結合，可利用到例 如膠帶或黏著劑來達成。 ",:hr,-· ο 進行的先後_ ’只要g行的話，並無特別限制。例 贱t之Γ行步驟103而對離型紙進行沖切形成可單獨剝離的離 :亦可先進行如上述的步驟109，將離型紙片剝離而露 ^原2盍的黏著層’及將複數個金屬彈片分別黏合至露出的黏 鍵二驟105，於彈片薄膜的第二表面之對應 置上刀別施加—凸點狀的光可固化樹脂材料；然後進行 =^的步驟107，將凸點狀的光可固化樹脂材料經過照光固化而 t複數個凸體。最後，進行如上述的步驟m的組裝。不過先黏 、占金屬彈片再進行凸體的形成，雜加光可固化樹脂材料時，易有 201101357 ，再進行金屬彈片的黏 凹凸不平餘況。目此，難為先形成凸體 貼。 再者丄可在彈片薄臈之對應於^型紙片的邊緣位置形成一通 匕可藉由例如在對彈片薄膜的離型紙進行沖切時，同時進行通 孔的沖但不局限於同時進行。使通孔的位置恰位於金屬彈片黏 合至黏著層之後的邊緣，即，金屬彈片的邊緣恰在通孔下方。通孔 ❹的設置可使手指按壓按鍵後釋放被壓縮的空氣，以使在按壓途中不 會感覺到阻力或反彈力。 ，再者，進行組裝時，可進一步將一觸控電容感應層組裝於按鍵 半成叩結構與鍵帽層之間。並可再進一步將一導光板組裝於觸控電 容感應層與鍵帽層之切¥' ^ U v 第4圖顯不依據本發明之按鍵結構之一具體實施例的爆炸示意 〇圖。彈片薄膜16係用以黏著金屬彈片Μ，並進一步黏著至印刷電 路板12。彈薄膜16之對應鍵帽位置上具有複數個凸體2〇，此等 凸體20 ；^於-製程巾直接形成於彈片薄膜16上，|與彈片薄膜16 有良好結合而固著於彈片薄膜16上。彈片薄膜16可進一步具有通 孔32。鍵帽部18則位於凸體2〇上方，與凸體2〇接觸，當鍵帽28 被按壓時，壓力能夠順墙岛傳達到髮屬彈片14，使受按壓的金屬彈 片可與其下方的印刷電路板12上的按鍵接點對應導通。 201101357 第5圖顯示依據本發明之按鍵結構的一具體實施例的剖面示意 圖。第6圖是第5圖的局部放大圖。如第5及6圖所示之按鍵結構 包括-印刷電路板12’於印刷電路板12上設有複數個按鍵接點％。 複數個金屬彈片14分別對應設置於此等按鍵接點26上方，於按壓 鍵巾目28時’文按壓的金屬彈片14與其下方的按鍵接點％對應導 通。彈片薄膜16具有表面16a及表面16b。在表面⑹具有黏著層。 彈片薄膜16覆蓋金屬利M’轉著層黏著金屬彈片μ，而且黏 〇著至印刷電路板12上，以將金屬彈片14固著於印刷電路板12上。 複數個凸體20，其係分別固著於彈片薄膜16之表面脱上而位於 此等金屬彈片Μ的上方:。包括如^^之印刷電職U、金屬彈片 Μ、彈片薄膜10、及凸㈣之爲_本文中稱為半結構或按鍵半 成品結構。-鍵帽部18進-步位於按鍵半成品結構之凸體2〇上方。 鍵帽部18可包含例如鍵帽層’並可進一步包括印刷層、或保護層等 等。鍵帽部18包括複數個鍵帽28，此等鍵帽可為相連的鍵帽或個 自分開雜裝的鍵帽。印刷層可提供鍵_色或文字圖樣。保護層 U 可用以保護例如印刷層以免於磨損。 曰 又如第5及6圖所示，於鍵帽部18與凸體2()之間，可進 設置有-導光板22。導_2表_具有微結構。導光板22可藉 由黏考層30而分別與鍵帽部18及彈片薄膜16互相社人 22與彈片邮6互相結合所使用的黏著層厚度較厚二使導光板 22保持在與凸體20賴時的高度，顿哪或塌陷。於導光板η 的-側或下方，可進-步設置至少-發光二極體(led)元件。可設 9 201101357 置一觸控電容感應層24於鍵帽部18與此等凸體2〇之間。在有導光 板22設置時，觸控電容感應層24較佳位於導光板22與此等凸體 20之間。觸控電容感應層24與鍵帽部18及彈片薄臈16的纟士人， 也可利用黏著層30而達成。 凸體2〇呈現圓弧凸黠狀，莫雇義面與彈片薄臈π緊密結合， 而頂表面是半球面狀，因為是由點膠頭或喷膠頭製得，因此大多是 呈現圓形的外形，但並不偏限於此。習知的凸體為柱狀或圓柱狀而 具有平的伽。本發明的凸體20比習知的凸體與上方例如鍵帽部的 接觸面積小而受力面積小，如此，使用者按壓時的按壓的力量可較 為集中，相對於習知技術而言，壓力較大。再者，本發明的凸體^ 固著於彈片薄膜，對應於金屬彈片的中心部位，力量的傳遞準確。 習知的凸體黏著於鍵帽部下表面’再與已與彈片薄膜及金屬彈片組 合好的印刷電路板組裝，易造成线，城生力量傳遞對位未對準 的問題，按壓時的手·好。本痛^凸體高度及尺寸可如所需而 〇定，在習知技術中，已知對於薄型按鍵而言，〇2至〇25職的凸體 高度是較佳的高度，本發明之凸體也可符合此高度。尺寸也依所需 而定，-般以凸體的外徑不超過金屬彈片的外徑的4G%為較佳。凸 體形狀則因為是由點膠頭或喷膠頭的點出或噴出，因此大多是呈現 圓形的外形，但不侷限於此。 第7圖顯示在各彈片薄膜16之對應於各金屬彈片14邊緣的位 置，設置有一通孔32约具艟實游鮮^ 201101357 彈如第5圖所7^’凸體2〇养位於彈片薄膜16的背對金屬 =片Η的表面上。而涵第8 ，也可以使凸體2g位於彈片 2 的面向金細14的表面上。於此情況下，較佳在形成彈 輕16的黏著層時，細開凸體2()默形成的位置，而在施加 ^體材料於彈片_ 16上時，則施加於具有黏著層的同—面，較佳 不具黏著層的位置。因此，將彈片薄膜16黏貼金屬彈片Μ及貼 Ο ^印刷電路板12之後，凸體則著_薄膜16之面是面向金 屬彈片14。 【圖式簡單說明】 第1圖顯示-習知之可動金屬彈片結構之剖面示意圖。 第2圖顯示-習知之可動金屬彈片結構之爆炸立體示意圖。 第3醜示-依據本發明之方法之—具體實蘭之流程圖。 第4圖顯雜據本發明之—雜實關之按鍵結構之爆炸立體 示意圖。 第5圖顯示依據明之，，施例之按鍵結構之剖面示竟 圖0 第6圖顯示第5圖之局部放大圖。 第7圖顯示依據本發明之另一具體實施例之按鍵結構之剖面示 201101357 意圖。 第8圖顯示依據本發明之又另一具體實施例之按鍵結構之剖面 示意圖。 ..,h Ή'「 【主要元件符號說明】 11、14金屬彈片 11Α半球狀部 11B通孔 ® 11C邊緣部 12 印刷電路板 13、13A、13B、13C 黏薯劑 15、16彈片薄膜 16a、16b 表面 17被按壓部 18鍵帽部 〇 20凸體 21小隔片 22導光板 24觸控電容感應層 20按鍵接點 28鍵帽 30黏著層 32 通孔 12 201101357 101、103、105、107、109、111 步驟[Embodiment] W According to the present invention, the manufacturing age-specific composition can be as shown in the flowchart of FIG. First, a step is performed to provide a shrapnel film and a release paper. The shrapnel film has a first surface and a second surface, and the first surface includes an adhesive layer to adhere the metal shrapnel and the printed circuit board. Use; release paper cover adhesive layer 'used in the Yubu Fortune ship is not used _ layer part, in order to facilitate the process of another process. The weaving is transferred to 1G3, and the lining paper is punched, and the release paper is formed into a plurality of separate __ type paper sheets at predetermined positions of the corresponding key towel i. These release sheets, which can be individually peeled off, have positions corresponding to the position of the keycap, which may correspond to the shape of the metal dome, the adhesive layer which can be allowed to escape after the release sheet is subsequently peeled off. G ' 〇 - then ' can be carried out for step 5, and a -bump-like photocurable resin material is applied to the corresponding positions of the corresponding key caps of the second thin wires of the shrapnel. The method of application can be, for example, dispensing or commissioning. Since the glue is sprayed by the sprayer to spray a predetermined amount of material onto the elastic film, the movement speed of the nozzle head can be relatively faster than that of the transfer head used in the dispensing process. Save time. The light curable resin material can be generally used as a convex material, and can be selected in consideration of cohesive force and viscosity, in order to apply a good bump to the cable ___. Then, step 107' is performed to form a scale-like photocurable material to form a 6 201101357 plurality of convex bodies. Although in this step, the surface, which is perpendicular to the surface of the elastic film, is the second aspect of the elastic film, it is not excluded that the convex body can be formed into one surface: one side, but the other surface of the present invention is Same side. The surface is adhered to the film of the shrapnel, and step 109 is performed to remove the strip; the layer, and the plurality of metal shrapnel are divided into the side wheel 1^=2 to borrow the remaining release paper lion. The metal bullet (4) is also placed on the printed circuit board. Then, the key cap layer and the button semi-finished product are connected, and assembled, so that the key cap portions of the key cap layer are respectively located corresponding to the flexible printing, and above the body. Printed Circuit Board The assembly and bonding between the various components of the girth 2 can be achieved by using, for example, tape or adhesive. ",:hr,-· ο The order of _ ’ is not limited as long as it is g. For example, step 103 is performed to form a release sheet which can be separately peeled off. Alternatively, the release sheet may be peeled off as described above, and the release layer may be peeled off to expose the original layer 2' The metal elastic pieces are respectively adhered to the exposed adhesive bond step 105, and the photocurable resin material is applied to the second surface of the elastic film, and then the bump-like photocurable resin material is applied; then step 107 is performed to form the bump The photocurable resin material is cured by irradiation to form a plurality of convex bodies. Finally, the assembly of step m as described above is carried out. However, the first sticking, occupying the metal shrapnel and then forming the convex body, the miscellaneous adding light curable resin material, it is easy to have 201101357, and then the adhesion of the metal shrapnel is uneven. For this reason, it is difficult to form a convex body patch first. Further, an opening may be formed at the edge of the elastic sheet corresponding to the edge of the sheet of paper. For example, when punching the release sheet of the elastic film, punching of the through holes may be simultaneously performed, but not limited to simultaneous. The through hole is positioned just at the edge after the metal dome is bonded to the adhesive layer, i.e., the edge of the metal dome is just below the through hole. The through hole ❹ is set to release the compressed air after the finger is pressed, so that no resistance or rebound force is felt during the pressing. Furthermore, when assembling, a touch capacitive sensing layer can be further assembled between the semi-finished structure of the button and the keycap layer. Further, a light guide plate can be further assembled to the touch capacitance sensing layer and the key cap layer. FIG. 4 shows an exploded view of a specific embodiment of the key structure according to the present invention. The shrapnel film 16 is used to adhere the metal shrapnel and further adhere to the printed circuit board 12. The corresponding button cap of the elastic film 16 has a plurality of convex bodies 2〇, and the convex bodies 20 are formed directly on the elastic film 16 , and the elastic film 16 is well bonded to the elastic film. 16 on. The shrapnel film 16 may further have a through hole 32. The key cap portion 18 is located above the convex body 2〇 and is in contact with the convex body 2〇. When the keycap 28 is pressed, the pressure can be transmitted to the hairspring 14 by the wall island, so that the pressed metal elastic piece can be printed under the same. The button contacts on the circuit board 12 are correspondingly turned on. 201101357 Figure 5 shows a cross-sectional schematic view of a particular embodiment of a button structure in accordance with the present invention. Fig. 6 is a partial enlarged view of Fig. 5. The key structure as shown in Figures 5 and 6 includes a printed circuit board 12' having a plurality of key contacts % on the printed circuit board 12. A plurality of metal domes 14 are respectively disposed above the button contacts 26, and when the button body 28 is pressed, the metal springs 14 pressed by the text are electrically connected to the button contacts % below. The shrapnel film 16 has a surface 16a and a surface 16b. There is an adhesive layer on the surface (6). The shrapnel film 16 is covered with a metal smear layer of adhesive metal shingles μ and adhered to the printed circuit board 12 to secure the metal shrapnel 14 to the printed circuit board 12. A plurality of projections 20 are attached to the surface of the elastic film 16 and are positioned above the metal domes. Including, for example, the printing electric job U, the metal shrapnel cymbal, the shrapnel film 10, and the convex (four) are referred to herein as semi-structured or button semi-finished structures. - The keycap portion 18 is stepped over the projection 2〇 of the button semi-finished structure. The key cap portion 18 may include, for example, a key cap layer' and may further include a printed layer, a protective layer, or the like. The keycap portion 18 includes a plurality of keycaps 28 which may be connected keycaps or self-separating keycaps. The printed layer can provide a key _ color or text pattern. The protective layer U can be used to protect, for example, the printed layer from abrasion. Further, as shown in Figs. 5 and 6, a light guide plate 22 may be provided between the key cap portion 18 and the projection 2 (). Guide_2 Table_ has a microstructure. The light guide plate 22 can be bonded to the key body 18 and the elastic film 16 by the adhesive layer 30, and the thickness of the adhesive layer used to bond the light shield plate 22 to the convex body 20 is The height of Lai's time, or where it collapsed. At least - a light emitting diode (LED) element may be further disposed on the side of the light guide plate η or below. 9 201101357 A touch capacitive sensing layer 24 is disposed between the keycap portion 18 and the protrusions 2〇. When the light guide plate 22 is disposed, the touch capacitance sensing layer 24 is preferably located between the light guide plate 22 and the protrusions 20. The gentleman of the touch capacitive sensing layer 24, the keycap portion 18, and the elastic sheet 16 can also be achieved by the adhesive layer 30. The convex body 2〇 has a circular convex shape, and the surface of the convex body is closely combined with the thin piece 弹π of the elastic piece, and the top surface is hemispherical, since it is made of a dispensing head or a glue head, so most of them are rounded. The shape, but not limited to this. Conventional protrusions are columnar or cylindrical and have a flat gamma. The convex body 20 of the present invention has a smaller contact area with a conventional convex body and an upper portion such as a keycap portion, and has a smaller force receiving area. Thus, the pressing force of the user when pressing can be concentrated, which is relative to the prior art. The pressure is greater. Furthermore, the convex body of the present invention is fixed to the elastic film, and the force transmission is accurate corresponding to the central portion of the metal elastic. The conventional convex body is adhered to the lower surface of the keycap portion and assembled with the printed circuit board which has been combined with the elastic film and the metal dome. It is easy to cause the line, and the power of the city transmits the problem of misalignment of the alignment. it is good. The height and size of the convex body can be determined as needed. In the prior art, it is known that for a thin button, the height of the protrusion of the 〇2 to 〇25 is a preferred height, and the convexity of the present invention. The body can also meet this height. The size is also determined as desired, and it is preferable that the outer diameter of the convex body does not exceed 4 G% of the outer diameter of the metal dome. Since the shape of the convex body is pointed out or ejected by the dispensing head or the dispensing head, it is mostly a circular shape, but is not limited thereto. Figure 7 shows a position corresponding to the edge of each of the metal domes 14 of each of the shrapnel films 16. A through hole 32 is provided for the tamping of the fresh film. 201101357 The bullet is as shown in Fig. 5; the convex body 2 is located in the elastic film. The back of the 16 is on the surface of the metal = sheet. In the eighth aspect, the convex body 2g may be located on the surface of the elastic piece 2 facing the gold thin 14 . In this case, it is preferable to finely open the position where the convex body 2 () is formed when the adhesive layer of the elastic light 16 is formed, and apply the same to the adhesive layer when the mechanical material is applied to the elastic sheet 16 - Surface, preferably without the location of the adhesive layer. Therefore, after the elastic film 16 is adhered to the metal dome and the printed circuit board 12, the convex surface is oriented to face the metal elastic 14 . [Simple Description of the Drawing] Fig. 1 shows a schematic cross-sectional view of a conventional movable metal dome structure. Figure 2 shows an exploded perspective view of a conventional movable metal shrapnel structure. The third ugly - in accordance with the method of the present invention - a specific flow chart. Fig. 4 is a perspective view showing the explosion of the button structure of the present invention. Fig. 5 shows a cross-sectional view of the key structure of the embodiment shown in Fig. 0. Fig. 6 shows a partial enlarged view of Fig. 5. Figure 7 is a cross-sectional view showing the structure of a button according to another embodiment of the present invention. Figure 8 is a cross-sectional view showing a key structure in accordance with still another embodiment of the present invention. ..,h Ή'" [Description of main component symbols] 11,14 metal dome 11Αhemispherical portion 11B through hole® 11C edge portion 12 printed circuit board 13, 13A, 13B, 13C sweet potato 15, 16 elastic film 16a, 16b surface 17 is pressed portion 18 key cap portion 〇 20 convex body 21 small spacer 22 light guide plate 24 touch capacitance sensing layer 20 button contact 28 key cap 30 adhesive layer 32 through hole 12 201101357 101, 103, 105, 107, 109, 111 steps
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