:M321552 八、新型說明： 【新型所屬之技術領域】 _乍係為種導光板結構按鍵模組，係指一種具有背光伽冰 ^效果之按鍵·，且_是—種具有導光板之按鍵模組。 【先前技術】 心者科技的進步與材料科學不_發之下，手機的魏與重量等 ㈣要求越來越多樣化，尤其以手機按鍵產品而言，除了需要通過 去:耗等測叙外，更需要具有自發光或稱之為背光效果，以利使用 線不㈣情況下使用該手機，但顯而易見的情況是，當我們增 、言月光光源的輝度或党度時，例如增加⑽的數量，這樣會減少手 =機_，因騎多制—個絲，就會婦手機電源，因此， ，丨、目則的發展趨勢是以更佳的光學設計來減低光源的使，進而減 夕光源所需之耗電，而延長手機的操作時間。 有-種習知之按鍵結構，可製造出上述之f光效果的按鍵。例如 t民國公開第2__7號專利，請參晒i所示，其係為一種按鍵 t： 〇雜鍵導光板100用來照亮電子產品之按鍵，該按鍵導光 板人光面140及一與入光面14〇相連之出光面則該導光板 0=分佈複數與按鍵相對應之細，該入光面⑽具有長形凹獅， ϋ形凹細具有背向導光細之突起結構姻該導光麵可減 y源使聰碰喊少電子產品耗電量又·按鍵發光輝度與發光 均勻性。 另外亦有-件t華民國專利公開號為2_6982，請參_ 2所 ' M321552 示，其主要係在於導光板200 m免有反光機構220，令來自於發光體 24〇之光源接觸到反光機構220之受光面23〇時，藉以獲得有域機 會’而可將該反射光源反射導引至暗帶區之中，使原各於導光板· 上所形成之暗帶區可獲得較多之光源，以達到降低其暗帶區之明顯程 度’或降低暗帶區於導光板2〇〇之表現位置。 、 【新型内容】 因此，本創作有鑑於傳統難以變更之現狀，提出一種導光板結構 •及其按鍵模組，使光源的耗電量能減低，而令使用或待機時間增力:， 且使按鍵達到一定的背光輝度。 為達到上述之目的’本創作一種導光板結構及其按鍵模組，係包 括· 一導祕，具魏數脑微賴於上表面與複數反賴結構於下 表面； 一矽膠層，配置於該導光板之下表面，並具有一凸體； 鲁一薄膜，配置於該導光板之上表面； 一鍵帽’配置於該細之上方，且該鍵帽之配置位置恰與該散射 -微結構成相對狀； -軟性印刷電路板，具有—金屬彈片，且該金屬彈片之配置位置 恰與該凸體呈相對狀； 一無片薄膜，貼附於該軟性印刷電路板與該金屬彈片之上方丨與 光源元件’配置於该導光板之—侧，其所產生之光線係藉由該 政射被結構與該反射微結構而投射至該鍵帽上，致使該鍵帽具有背光 •M321552 效果，待使用者壓按該鍵帽後該薄膜、導光板與矽膠層會產生一變形 量，且該凸體係利用該變形量而觸擊該金屬彈片，令該金屬彈片致動 該軟性印刷電路板產生一訊號。 為讓本創作之上述目的、特徵與優點能令熟習相關技術領域人士 (Person skilled in the art)能據以實施(Practice)，下文特舉實施 方式並配合圖式作詳述之說明。 【實施方式】 # 以下之說明，為了達到簡潔而清楚的目的，已知功能與結構之等 細描述將會被省略，以避免使本創作之主題内容不清。 圖3與圖4為根據本創作一實施例所繪示之按鍵模組(Key module)300斷面圖，如該圖3與圖4所示，該按鍵模組300包含一導 光板（Light-guiding plate)330，具有複數散射微結構 (Light-scattering micro-structure)360 於上表面 331 與複數反射 微結構(Light-reflectingmicro-structure)370 於下表面 332 ; —石夕 •膠層（Si licone)340，配置於該導光板(Light-guiding plate)330 之 下表面332，並具有一凸體(pr〇trusion)380 ; —薄膜(Film)320，配 置於该導光板330之上表面331 ; —鍵帽（Keycap)310，配置於該薄膜 320之上方，且該鍵帽31〇之配置位置恰與該散射微結構36〇成相對 狀，一軟性印刷電路板(Flexible printed circuit board)400，具有 一金屬彈片（Metal dome)390，且該金屬彈片390之配置位置恰與該凸 體380呈相對狀；一彈片薄膜(j)〇mesheet)35〇，貼附於該軟性印刷電 路板400與該金屬彈片390之上方；與一光源元件（Ught奶虹沈 M321552 w)·，配置於該導光板㈣之—側，其所產生之光線係藉由該 散紐結構360與該反射微結構37〇而投射至該鍵帽上，致使該 鍵中目310具有背光效果，待使用者壓按該鍵帽31〇後該薄膜娜、導 光板330與郷層34G會產生-變形量’且該凸體係利用該變形 量而觸擊該金屬彈片390,令該金屬彈片39〇致動該軟性印刷電路板 400產生一電性接觸訊號。 請附參酬3與圖5所示，本創作對賊散射微結構咖之設計 籲係由圓椎狀體或角椎狀體所構成，而該反射微結構係呈圓椎狀或 半球狀之凹槽。一般而言，在製作該散射微結構36〇時，可以藉由印 刷的方式或是直接以模具成型（Injecti〇n)的方式來製作，例如，可以 利用紫外光固化樹脂（Ultraviolet Curable Resin)印刷於該導光板 330之上表面331上，若利用模具射出者，則應該製備一具有圓椎狀 (conical)或角椎狀(pyramidal)之模仁，使得溶融塑料進入模内後成 形。 _ 對於該導光板330之材質，本實施例係選自熱塑性聚氨脂 CThemoplasticPolyurethans，TPU)、聚碳酸酯（p〇iycarb〇nate，pc)、 聚甲基丙烯酸曱酯（Po 1 ymethy 1 Methacry 1 ate，PMMA)或聚對苯二甲酸 乙二醇酯（Polyethylene Tereph仕lalate，PET)之其中一種材質，由於 這些材質有較佳的透光度與良好的彈性恢復能力，在該導光板33〇受 壓變形之後，可以迅速的回彈。 而該石夕膠層340在本實施例所選用之材質係為石夕膠，雖然石夕膠具 有一定程度的透光度’但是在彈性恢復能力上，卻不如前述之熱塑性 : M321552 ♦氨月曰（TPU)、聚碳酸酯（pc)、聚甲基丙烯酸甲酯（PMMA)或聚對苯二甲 酉夂乙一醇知⑽)等材質來得好，但有其優點在於，當石夕膠層綱之凸 -致動"亥彈片薄膜350時，因為石夕膠材質較為柔軟，使得該彈片 薄膜350之磨耗能降低，再者，該石夕膠層34〇與該導光板·如果係 用板内貼合(Cording)的技術相結合的話，那麼柔軟易變形的石夕膠 層340可以藉由該導光板33㈣高彈性恢復能力而使得使用者在按壓 時能獲得良好的機械觸感。 _ 關於本實施例之鍵帽310，可考慮選狀材質係為塑膠、金屬合 金、精密陶莞或玻璃之其中一種，但須注意的是，塑膠或玻璃雖然可 Μ支成透月的放果’但是金屬合金或是精密陶瓷(Ceramic)的話，則需 要利用其他加方法，使該鍵帽31()具有鏤空狀，如此才會顯現背光 效果。 請參閱圖4所示，本實施例所適狀統元件410係為發光二極 體(LED)，由於發光二極體有一定的發光特性被需要被考量，尤其是在 _方向性的選用上尤須注意，例如正發光型的發光二極體會比侧發光型 的發光二極體來得不適用，而圖示中的殼體(H〇using)5〇〇主要係用來 保護本創作軸嶋成元件，輯免受到碰撞或細等非正常操作下 的損害。 請參閱圖6所示，本創作之適用領域得包含汽車音響面板之適 用，例如將本創作之按鍵模組3〇〇實施於汽車音響面板的產品上。 上述僅為本創作之較佳實施例而已，僅在揭露本創作之優點在於 透過光學設計而節省光源的耗電量，麟每—條光誠生的光線都能 -·· M321552 有效運用於按鍵之背光，除減少光源成本與耗電量，更能增加手機操 作時間。 雖然本創作已明示實施方式揭露於上，然其並非用來限定本創作 實施之範圍，任何依本創作之精神和範圍所做的均等（Equivalen1^變 化、修飾或置換(Substitutions)，皆應視為被讀取(Read on)於本創 作如後所述之申請專利範圍（Claims)所涵蓋。 【圖式簡單說明】 圖1為習知技術示意圖。 圖2為另一習知技術示意圖。 圖3為本創作一實施例之斷面示意圖。 圖4為本創作一實施例之斷面示意圖。 圖5為本創作一實施例之立體示意圖。 圖6為本創作一實施例之汽車音響面板應用示意圖。 【主要元件符號說明】 10〇、200、330:導光板（Light-guiding plate) l10、210:出光面 * 120:孔 130:長形凹槽 14〇:入光面 220:反光機構 230:受光面 240:發光體 :M321552 300:按鍵模組（Key pad module) 310:鍵帽（Keycap) 320:薄膜（Film) 331:上表面 332:下表面 340:矽膠層（Silicone) 350:彈片薄膜（Dome sheet) φ 360:散射微結構（Light-scattering micro-structure) 370:反射微結構（Light-reflecting micro-structure) 380:凸體（Protrusion) 390:金屬彈片（Metal dome) 400:軟性印刷電路板（Flexible printed circuit board) 410:光源元件（Light source element) 500:殼體（Housing) 11:M321552 VIII. New description: [New technical field] _乍 is a kind of light guide plate structure button module, which refers to a button with backlight gamma effect, and _ is a kind of button mode with light guide plate group. [Prior technology] The advancement of science and technology and the science of materials are not under the circumstance, the requirements of Wei and weight of mobile phones (4) are becoming more and more diverse, especially in the case of mobile phone button products, in addition to the need to go through: consumption and other statistics It is more necessary to have a self-illuminating or backlighting effect to facilitate the use of the mobile phone without using the line (4), but it is obvious that when we increase the brightness or party degree of the moonlight source, for example, increase the number of (10) This will reduce the hand = machine _, because riding a multi-system - a wire, it will be a mobile phone power supply, therefore, the development trend of 丨, 目 is to better reduce the light source by the better optical design, and then reduce the light source The power consumption required, and the operation time of the mobile phone is extended. There is a conventional button structure that can produce the above-mentioned f-light effect button. For example, the Republic of China Public Patent No. 2__7, please refer to the sun shown in i, which is a kind of button t: the noisy key light guide plate 100 is used to illuminate the button of the electronic product, the button light guide plate light surface 140 and one into The light-emitting surface of the light surface 14〇 is connected to the light-guide plate 0=the distribution complex is corresponding to the thinness of the button, the light-incident surface (10) has a long-shaped concave lion, and the concave-shaped concave portion has a protrusion structure with a back-guided light. The surface can reduce the y source so that Cong can scream less electronic product power consumption, and the button illuminance and illuminance uniformity. In addition, there is also a case of the Republic of China Patent Publication No. 2_6982, please refer to _ 2 'M321552', which is mainly because the light guide plate 200 m is free of the reflective mechanism 220, so that the light source from the illuminator 24 接触 is in contact with the reflective mechanism. When the light receiving surface of 220 is 23 ,, the reflective light source can be reflected and guided into the dark band region by obtaining a domain opportunity, so that more light sources can be obtained in the dark band region formed on the light guide plate. In order to reduce the apparent extent of the dark zone or reduce the performance of the dark zone in the light guide plate 2〇〇. [New content] Therefore, in view of the current situation that is difficult to change, this creation proposes a light guide plate structure and its button module, so that the power consumption of the light source can be reduced, and the use or standby time can be increased: The button reaches a certain backlight brightness. In order to achieve the above purpose, a light guide plate structure and a button module thereof are included, including a guide thread, having a Wei number brain slightly on the upper surface and a complex reverse structure on the lower surface; a lower surface of the light guide plate and having a convex body; a Lu thin film disposed on the upper surface of the light guide plate; a key cap 'disposed above the thin portion, and the key cap is disposed at exactly the same as the scattering-micro structure a flexible printed circuit board having a metal dome, and the metal dome is disposed at a position opposite to the convex body; a film is attached to the flexible printed circuit board and the metal dome The light source element is disposed on the side of the light guide plate, and the light generated by the light source element is projected onto the key cap by the structure and the reflective microstructure, so that the key cap has a backlight and M321552 effect. After the user presses the keycap, the film, the light guide plate and the silicone layer generate a deformation amount, and the convex system uses the deformation amount to strike the metal elastic piece, and the metal elastic piece activates the soft printed circuit board to generate the deformation. Signal. In order to enable the above-mentioned objects, features, and advantages of the present invention to enable those skilled in the art to practice, the following detailed description is given in conjunction with the drawings. The following description of the functions and structures will be omitted in order to avoid obscuring the subject matter of the present invention. 3 and FIG. 4 are cross-sectional views of a key module 300 according to an embodiment of the present invention. As shown in FIG. 3 and FIG. 4, the button module 300 includes a light guide plate (Light- Guiding plate 330, having a light-scattering micro-structure 360 on the upper surface 331 and a light-reflecting micro-structure 370 on the lower surface 332; - a stone layer (Si licone) 340, is disposed on the lower surface 332 of the light-guiding plate 330, and has a pr〇trusion 380; a film 320 disposed on the upper surface 331 of the light guide plate 330; a keycap 310 disposed above the film 320, and the keycap 31 is disposed opposite to the scattering microstructure 36, and a flexible printed circuit board 400. There is a metal dome 390, and the metal dome 390 is disposed at a position opposite to the convex body 380; a lamella film (j) 〇mesheet) 35 〇 is attached to the flexible printed circuit board 400 and Above the metal dome 390; with a light source component (Ught milk The surface of the light guide plate (4) is disposed on the side of the light guide plate (4), and the light generated by the light is projected onto the key cap by the diffusion structure 360 and the reflective microstructure 37, so that the key is in the head 310 The backlight has a backlight effect. After the user presses the keycap 31, the film, the light guide plate 330 and the layer 34G generate a deformation amount, and the convex system strikes the metal dome 390 by using the deformation amount. The metal dome 39 〇 actuates the flexible printed circuit board 400 to generate an electrical contact signal. Please attach the rewards 3 and Figure 5, the design of the thief scattering micro-structured coffee is composed of a circular or angular vertebra, and the reflective microstructure is round or hemispherical. Groove. In general, when the scattering microstructure 36 is fabricated, it can be formed by printing or directly by molding, for example, by ultraviolet curing resin (Ultraviolet Curable Resin). On the upper surface 331 of the light guide plate 330, if a mold is used, a mold having a conical or a pyramidal shape should be prepared so that the molten plastic is formed into the mold. _ For the material of the light guide plate 330, the embodiment is selected from the group consisting of thermoplastic polyurethane CThemoplastic Polyurethans, TPU), polycarbonate (p〇iycarb〇nate, pc), poly(meth) methacrylate (Po 1 ymethy 1 Methacry 1 One of the materials of ate, PMMA) or polyethylene terephthalate (Polyethylene Tereph lalate, PET), because these materials have better light transmittance and good elastic recovery ability, the light guide plate 33〇 After being deformed by pressure, it can rebound quickly. The material selected in this embodiment is Shishijiao, although the stone has a certain degree of transparency, but the elastic recovery ability is not as good as the aforementioned thermoplastic: M321552 ♦ ammonia month曰 (TPU), polycarbonate (pc), polymethyl methacrylate (PMMA) or poly(p-xylylene glycol) (10)), etc., but it has the advantage that when the layer is When the convex film-actuation"Hui film is 350, because the material of the stone is softer, the abrasion energy of the elastic film 350 is reduced, and further, the stone layer 34〇 and the light guide plate are used. When the technique of in-panel bonding is combined, the soft and deformable stone layer 340 can achieve a good mechanical touch when pressed by the high elastic recovery capability of the light guide plate 33. _ Regarding the keycap 310 of the present embodiment, it may be considered that the selected material is one of plastic, metal alloy, precision pottery or glass, but it should be noted that although plastic or glass can be used as a fruit through the moon 'But the metal alloy or the ceramic, you need to use other methods to make the key cap 31 () have a hollow shape, so that the backlight effect will appear. Referring to FIG. 4, the component 410 of the present embodiment is a light-emitting diode (LED). Since the light-emitting diode has certain light-emitting characteristics, it needs to be considered, especially in the selection of _ directionality. It is important to note that, for example, a positive-emitting type of light-emitting diode may be inapplicable than a side-emitting type of light-emitting diode, and the housing of the figure (H〇using) 5〇〇 is mainly used to protect the present axis. Into the components, the series is protected from damage caused by collision or fine abnormal operation. Referring to FIG. 6, the application field of the present invention includes the application of a car audio panel, for example, the button module of the present invention is implemented on a car audio panel. The above is only a preferred embodiment of the present invention. The only advantage of exposing the present invention is that the optical power consumption of the light source can be saved through the optical design, and the light of each light can be effectively used. The backlight, in addition to reducing the cost of light source and power consumption, can increase the operation time of the mobile phone. Although the present invention has been disclosed in the above-described embodiments, it is not intended to limit the scope of the present invention, and any equivalents (such as changes, modifications, or substitutions) in accordance with the spirit and scope of the present invention should be considered. It is covered by the patent application (Claims) as described later in the present application. [Schematic Description] Fig. 1 is a schematic diagram of a conventional technique. Fig. 2 is a schematic diagram of another conventional technique. 3 is a schematic cross-sectional view of an embodiment of the present invention. Fig. 4 is a schematic cross-sectional view of an embodiment of the present invention. Fig. 5 is a perspective view of an embodiment of the present invention. Schematic. [Main component symbol description] 10〇, 200, 330: Light-guiding plate l10, 210: Light-emitting surface * 120: Hole 130: Long groove 14〇: Light-in surface 220: Reflective mechanism 230 : Light-receiving surface 240: Illuminant: M321552 300: Key pad module 310: Keycap 320: Film 331: Upper surface 332: Lower surface 340: Silicone layer 350: Shrapnel Dome sheet φ 360: scattering micro Light-scattering micro-structure 370: Light-reflecting micro-structure 380: Protrusion 390: Metal dome 400: Flexible printed circuit board 410 : Light source element 500: Housing 11