I276128utwfdoc/g 九、發明說明： 【發明所屬之技術領域】 本發明是有關於一種按鍵組，且特別是有關於一種具 有可撓性導光板的按鍵組。 【先前技術】 隨著科技的發達以及消費市場對於產品攜帶便利性 的要求提高，目前手持式電子裝置皆以體積輕薄小巧以及 功忐強大為其設計目標。一般而言，手持式電子裝置依其 主要功能的不同，可大略分為行動電話（Cellph〇ne)、電 子辭典、個人數位助理器（pers〇nal Digital Assistant，PDA J 以及掌上型遊戲機等。 一。。以行動電話為例，其結構主要係由一主機本體、一顯 不單元及一按鍵組所構成。其中，主機本體内具有一資料 處理模組，而顯示單元通常是一液晶顯示模組（LiquidI276128utwfdoc/g IX. Description of the Invention: [Technical Field] The present invention relates to a button group, and more particularly to a button group having a flexible light guide plate. [Prior Art] With the development of technology and the increasing demand for portability of products in the consumer market, handheld electronic devices are currently designed with a small size and a small size. In general, handheld electronic devices can be roughly divided into mobile phones (Cellph〇ne), electronic dictionaries, personal digital assistants (pers J), PDA J, and handheld game consoles, depending on their main functions. In the case of a mobile phone, the structure is mainly composed of a host body, a display unit and a button group. The host body has a data processing module, and the display unit is usually a liquid crystal display module. Group (Liquid
Crystal Display Module，LCM)。顯示單元通常配置於主機 本，中，且主機本體暴露出顯示單元的顯示區域，其中顯 :單το用以顯示影像、圖案及文字。此外，主機本體上通 常配置有按鍵組，用以作為手持式電子裝1之操控介面。 ^為了要讓使用者在光線不充足的情形下仍能夠辨識 按鍵上的文字或圖案，在按鍵下方通常會配置一組背光 源，使使用者能夠方便地辨識按鍵上的文字或圖案。此 ^ Ί光源通常是發光二極體（Ught Em論g Di〇de，LED ) ，疋 ％激發光元件（Electr〇_LuminescentDevice，ELD)等 等有關於習知的按鍵組的細部結構將詳述如後。 圖1繪示為習知的按鍵組的剖面示意圖。請參考圖i， 5Crystal Display Module, LCM). The display unit is usually disposed in the host, and the main body of the main body exposes the display area of the display unit, wherein the display unit is used to display images, patterns, and characters. In addition, a button group is usually disposed on the main body of the main body to serve as a control interface for the handheld electronic device 1. ^ In order to allow the user to recognize the text or pattern on the button in the case of insufficient light, a set of backlights is usually arranged under the button, so that the user can easily recognize the text or pattern on the button. This Ί light source is usually a light-emitting diode (Ught Em), a 疋% excitation light element (Electr〇_LuminescentDevice, ELD), etc. The detailed structure of the conventional button group will be detailed. As after. FIG. 1 is a schematic cross-sectional view of a conventional button set. Please refer to Figure i, 5
此夕卜 以 I276128lltwfdoc/g 習知的按鍵組loo是由第一基板no、第二基板120、按鍵 圖案130、第三基板140以及配置於第三基板上的光源15〇 所組成，其中光源150為發光二極體。由於光源15〇是配 置於第一基板110、第二基板120以及按鍵圖案130的下 方，因此光源150所發出的光線必須依序穿過第一基板no 與第二基板120才能自第二基板120之表面出射。然而， 第一基板110的材質通常是聚碳酸酯（PC)或丙烯_丁二 烯-苯乙烯樹脂（ABS)，而第二基板12〇的材質通常是橡 膠。換言之，習知的按鍵組10〇的顯示亮度便受限於按鍵 圖案130、第一基板11〇以及第二基板12〇的材質。因此， 當習知的按鍵組100的顯示亮度不夠或不均勻時，使用者 ，辨識按鍵文字或圖案時通常會產生困擾。若欲解決此問 題，就必須增加習知的按鍵組1〇〇中光源15〇的配置數量。 然而，增加光源150的數量卻會增加手持式電子裝置的耗 電量。 口 雖使用黾激發光元件可以使得習知的按鍵組 t〇〇王現f較為均勻的亮度。然而，由於電激發光元件也 二置在弟基板11〇與弟二基板120的卞方，而電激發 光元件所發出的光線仍會受到第一基板110與第二基板 120的影f，因此習知的按鍵组1〇〇無法呈現均句的亮产。 【發明内容】 又 有4a於此，本發明的目的就是在提供一 提供較佳的顯示亮度。 於配ϊίΐίΓ其他目的’本發明提出—種按鍵組，其適 … ；A路板上，其中按鍵組適於接觸電路板並使電路 I276128lltwfdoc/g 板產生電子訊號。此按鍵組包括可撓性導光板、按鍵圖案、 保護層、絲以及反射罩。其巾，按_案與賴層皆配 置於可撓性導光板之第-表面上’且賴層覆蓋按鍵圖 案此外，光源與反射罩配置於可撓性導光板之一側，且 反射罩包覆住光源。 在本發明一實施例中，可撓性導光板的厚度例如是介 於0.5至ι·〇公釐。 在本發明一實施例中，可撓性導光板為楔形導光板。 其中，楔形導光板與電路板之間更包括填充材料層，以使 楔形導光板平整地接觸電路板。 在本發明一實施例中，可撓性導光板例如是平行導光 板。 在本發明一實施例中，按鍵組更包括光學膜片，其配 置於可挽性導光板之第二表面上。其中，光學膜片例如是 菱鏡矩陣表面光學片。此外，按鍵組更包括反射層，且反 射層例如配置於可撓性導光板之第二表面上，而光學膜片 係位於反射層與可撓性導光板之間。 > 在本發明一實施例中，按鍵組更包括一反射層，配置 於可撓性導光板之第二表面上。 ，在本發明一實施例中，保護層的材質包括透明氧化金 屬或透明氧化半導體。其中，透明氧化金屬包括氧化或 氧化鋁。 在本發明一實施例中，光源例如是發光二極體或冷陰 極螢光燈(Cold Cathode Fluorescence Lamp, CCFL)。 7 I27612?lltwfdoc/g 在本發明-實施例中，反射罩之形狀例如是半圓形或 半橢圓形。 基於上述，本發明將光源配置於具有透光性質的可撓 性導光板側邊，並將按鍵圖案形成可撓性導光板上，因^ 光源所發出的光能夠依序經由可撓性導光板與按鍵圖案而 入射使用者的眼睛中，以提高顯示亮度。 、 為讓本發明之上述和其他目的、特徵和優點能更明顯 易懂，下文特舉較佳實施例，並配合所附圖式，作詳細說 明如下。 、口 【實施方式】 ^ 一實施例 圖2繪示為本發明第一實施例之按鍵組的剖面示意 圖。請芩考圖2，按鍵組2〇〇適於配置於電路板3〇〇&上， 其中按鍵組200適於接觸電路板3〇〇a並使電路板3〇〇&產 生電子訊號。此按鍵組200包括可撓性導光板21〇、按鍵 圖案220、保護層230、光源240以及反射罩250。在本實 知例中，可撓性導光板21〇是一透明且具盡彈性的平行導 光板’且其厚度介於〇·5至1〇公釐。 承上述，按鍵圖案220配置於可撓性導光板210之第 二表面212上。為了避免按鍵圖案220被使用者按壓後磨 才貝而讓使用者無法辨識，因此可撓性導光板21〇之第一表 面212上有一層保護層230。此保護層230用以覆蓋住按 鍵圖案220。在本實施例中，保護層23〇的材質例如是氧 化石夕、氧化紹等透明氧化金屬或是透明氧化半導體。 8 I276128lltwfdoc/g 請繼續參考圖2，在本實施例中，光源240與反射罩 250皆配置於可撓性導光板210之一側，然而光源240也 T以同日守酉己置於可撓性導光板210之兩側。此夕卜，光源240 例如是多數個點光源的發光二極體或是線光源的冷陰極螢 光燈。另外’反射罩25〇包覆住光源24〇，而反射罩25〇 的形狀=如是半圓形或半橢圓形，或可匯聚光源之特殊曲 勺矛J用田然 ’如同前述，為了增加按鍵 組200的顯示亮度，在可撓性導光板21〇之兩側也可以同 時配置光源240。 由於本貫施例之按鍵組200的按鍵圖案220係配置於 可撓性導光板210上，且光源24〇配置於可撓性導光板21〇 之一側。當光源240所發出的光線在依序穿過可撓性導光 板210、按鍵圖案22〇以及透明的保護層23〇之後，便已 進入使用者的眼睛。相較於習知之按鍵組1〇〇，本實施例 之光源240叉到較少材料之阻擋，故按鍵組2⑻可以提供 使用者較佳之顯示亮度。 一當按鍵組200具有良好的顯示亮度時4使用者便可以 輕易地辨識按鍵圖案220。當使用者欲將資料輸入至手持 式電子裝置(未繪示）時，使用者按壓按鍵圖案22〇。此時， 可撓性導光板210能作較大幅度變形，因而使按鍵組2〇〇 與電路板3GGa接觸，且電路板施會依據使用者所按壓 之按鍵圖案220以產生相對應的電子訊號。 在本貫施例中，為了提高按鍵組2〇〇的顯示亮度，在 可撓性導光板2H)之第二表面214上也可以配置光學膜片 9 I27612Slltwfd0C/g 260’而光學膜片260能夠將光源240所投射出之光線更加 均勻分佈。在本實施例中，光學膜片26〇例如是菱鏡矩陣 表面光學片。此外，在可撓性導光板21〇的第二表面214 上也可以配置反射層270，以取代光學膜片260，且反射層 270的材質例如是具有反光功能之金屬。進一步來說，在 可撓性導光板210之第二表面214上更可以同時配置光學 膜片260以及反射層270，以增加按鍵組2〇〇的光利用率 以及光線均勻性。其中，光學膜片26〇係位於反射層27〇 與可撓性導光板210之間。而有關於本實施例之按鍵組2〇〇 的製作方法將詳述如後。 圖3A〜3E繪示為本發明第一實施例之按鍵組的組裝 製程流程圖。請參考圖3A，首先提供一可撓性導光板21〇, 然後於可撓性導光板210之第一表面212上形成按鍵圖案 220’其中形成按鍵圖案220的方法可以是網版印刷製程、 真空濺鍍法、蒸鍍或是鏡面油墨等方法。 請麥考圖3B，在可撓性導光板21〇上形成保護層 230，且保護層230覆蓋住按鍵圖案22〇，赵保護按鍵圖案 220。此外，形成保濩層230的方法可以是真空鍍膜製程。 在其他實施例中，形成保護層23〇的方法還可以是將已具 有按鍵圖t 220之可撓性導光板21〇浸置於含有透明氧化 物的溶液中。 請參考圖3C，為了增加按鍵_光率，在可挽 性導光板210之第二表面214上可以形成光學膜片26〇， 其中形成光學膜260的方法可以是印刷。或者，亦可以 I27612^lltwfdoc/g 用貼附的方式將光學膜片260貼附於可撓性導光板210之 第二表面214上。之後，在光學膜片260上形成反射層 270，其中形成反射層270的方法可以是真空鍍膜製程。同 樣地，反射層270也可以貼附方式配置於在光學膜片260 上。更甚者’在可撓性導光板210之第二表面214上亦可 僅單獨貼附光學膜片260或反射層270。 #麥考圖3D，將光源240組裝至反射罩250中。在 本實施例中，光源240例如是點狀光源的發光二極體。然 而，光源240也可以是線光源之冷陰極螢光燈。 凊麥考圖3E’將具有光源240之反射罩250組裝至可 撓性導光板21G之-側。同時，如同前述，可撓性導光板 之另一側亦可組裝如前述之光源24〇及反射罩25〇 (未 緣不）’以更進-步提昇亮度及均勻照光。至此，本發明 200的組裝製程大致完成。之後’再將按鍵組· 組I至電路板3〇〇a上。 aBS 馳之杨所發㈣光線f通過由The conventional button group loo is composed of a first substrate no, a second substrate 120, a button pattern 130, a third substrate 140, and a light source 15〇 disposed on the third substrate, wherein the light source 150 It is a light-emitting diode. Since the light source 15 is disposed under the first substrate 110, the second substrate 120, and the button pattern 130, the light emitted by the light source 150 must sequentially pass through the first substrate no and the second substrate 120 to be from the second substrate 120. The surface is emitted. However, the material of the first substrate 110 is usually polycarbonate (PC) or propylene-butadiene-styrene resin (ABS), and the material of the second substrate 12 is usually rubber. In other words, the display brightness of the conventional button group 10 is limited by the materials of the button pattern 130, the first substrate 11A, and the second substrate 12A. Therefore, when the display brightness of the conventional button group 100 is insufficient or uneven, the user often has troubles in recognizing the key text or pattern. To solve this problem, it is necessary to increase the number of configurations of the light source 15A in the conventional button group 1〇〇. However, increasing the number of light sources 150 increases the power consumption of the handheld electronic device. Although the use of the 黾 excitation light element can make the conventional button group t 〇〇 f now more uniform brightness. However, since the electroluminescent element is also disposed on the side of the second substrate 120 and the second substrate 120, the light emitted by the electroluminescent element is still affected by the first substrate 110 and the second substrate 120. The conventional button group 1〇〇 cannot display the brightening of the uniform sentence. SUMMARY OF THE INVENTION Again, here, the object of the present invention is to provide a preferred display brightness. For the purpose of the invention, the present invention proposes a button group which is suitable for the A-way board, wherein the button group is adapted to contact the circuit board and cause the circuit I276128lltwfdoc/g board to generate an electronic signal. The button set includes a flexible light guide plate, a button pattern, a protective layer, a wire, and a reflector. The towel and the layer are disposed on the first surface of the flexible light guide plate and the layer covers the button pattern. In addition, the light source and the reflector are disposed on one side of the flexible light guide plate, and the reflector cover Cover the light source. In an embodiment of the invention, the thickness of the flexible light guide plate is, for example, from 0.5 to ι·〇. In an embodiment of the invention, the flexible light guide plate is a wedge-shaped light guide plate. Wherein, the wedge-shaped light guide plate and the circuit board further comprise a filling material layer to make the wedge-shaped light guide plate smoothly contact the circuit board. In an embodiment of the invention, the flexible light guide plate is, for example, a parallel light guide plate. In an embodiment of the invention, the button set further includes an optical film disposed on the second surface of the leganable light guide plate. Among them, the optical film is, for example, a prism mirror surface optical sheet. In addition, the button set further includes a reflective layer, and the reflective layer is disposed, for example, on the second surface of the flexible light guide plate, and the optical film is disposed between the reflective layer and the flexible light guide plate. > In an embodiment of the invention, the button set further includes a reflective layer disposed on the second surface of the flexible light guide plate. In an embodiment of the invention, the material of the protective layer comprises a transparent oxide metal or a transparent oxide semiconductor. Among them, the transparent oxidized metal includes oxidized or alumina. In an embodiment of the invention, the light source is, for example, a light emitting diode or a Cold Cathode Fluorescence Lamp (CCFL). 7 I27612?lltwfdoc/g In the present invention-embodiment, the shape of the reflector is, for example, semi-circular or semi-elliptical. Based on the above, the present invention arranges the light source on the side of the flexible light guide plate having the light transmitting property, and forms the button pattern on the flexible light guide plate, because the light emitted by the light source can sequentially pass through the flexible light guide plate. It is incident on the user's eyes with the button pattern to increase the display brightness. The above and other objects, features, and advantages of the present invention will become more fully understood from [Embodiment] ^ Embodiment FIG. 2 is a cross-sectional view showing a key group according to a first embodiment of the present invention. Referring to FIG. 2, the button group 2 is adapted to be disposed on the circuit board 3A, wherein the button group 200 is adapted to contact the circuit board 3A and cause the circuit board 3 to generate an electronic signal. The button set 200 includes a flexible light guide plate 21, a button pattern 220, a protective layer 230, a light source 240, and a reflection cover 250. In the present embodiment, the flexible light guide plate 21 is a transparent and flexible parallel light guide plate 'and has a thickness of 〇·5 to 1 mm. In the above, the button pattern 220 is disposed on the second surface 212 of the flexible light guide plate 210. In order to prevent the button pattern 220 from being pressed by the user and being unrecognizable by the user, the first surface 212 of the flexible light guide plate 21 has a protective layer 230 thereon. This protective layer 230 is used to cover the button pattern 220. In the present embodiment, the material of the protective layer 23 is, for example, a transparent oxidized metal such as oxidized oxide or oxidized or a transparent oxidized semiconductor. 8 I276128lltwfdoc/g Please continue to refer to FIG. 2. In this embodiment, both the light source 240 and the reflector cover 250 are disposed on one side of the flexible light guide plate 210, but the light source 240 is also placed on the same day. Both sides of the light guide plate 210. Further, the light source 240 is, for example, a light-emitting diode of a plurality of point light sources or a cold cathode fluorescent lamp of a line light source. In addition, the 'reflection cover 25 〇 covers the light source 24 〇, and the shape of the reflection cover 25 = = semi-circular or semi-elliptical shape, or a special curved spoon spear J that can converge the light source, like the above, in order to increase the button For the display brightness of the group 200, the light source 240 may be disposed on both sides of the flexible light guide plate 21A. The button pattern 220 of the button group 200 of the present embodiment is disposed on the flexible light guide plate 210, and the light source 24 is disposed on one side of the flexible light guide plate 21'. When the light emitted by the light source 240 passes through the flexible light guide plate 210, the button pattern 22A, and the transparent protective layer 23, it has entered the user's eyes. Compared with the conventional button group 1 , the light source 240 of the embodiment is forked to a less material barrier, so the button group 2 (8) can provide a better display brightness for the user. The button pattern 220 can be easily recognized by the user when the button group 200 has a good display brightness. When the user wants to input data to the handheld electronic device (not shown), the user presses the button pattern 22A. At this time, the flexible light guide plate 210 can be deformed to a large extent, so that the button group 2 is in contact with the circuit board 3GGa, and the circuit board is applied according to the button pattern 220 pressed by the user to generate corresponding electronic signals. . In the present embodiment, in order to increase the display brightness of the button group 2, the optical film 9 I27612Slltwfd0C/g 260' may be disposed on the second surface 214 of the flexible light guide plate 2H), and the optical film 260 can be disposed. The light projected by the light source 240 is more evenly distributed. In the present embodiment, the optical film 26 is, for example, a prismatic surface optical sheet. Further, a reflective layer 270 may be disposed on the second surface 214 of the flexible light guide plate 21A instead of the optical film 260, and the material of the reflective layer 270 is, for example, a metal having a reflective function. Further, the optical film 260 and the reflective layer 270 can be disposed on the second surface 214 of the flexible light guide plate 210 to increase the light utilization efficiency and light uniformity of the button group 2〇〇. The optical film 26 is disposed between the reflective layer 27A and the flexible light guide plate 210. The method of manufacturing the button group 2 of the present embodiment will be described in detail later. 3A to 3E are flow charts showing the assembly process of the button group according to the first embodiment of the present invention. Referring to FIG. 3A, a flexible light guide plate 21 is first provided, and then a button pattern 220 is formed on the first surface 212 of the flexible light guide plate 210. The method for forming the button pattern 220 may be a screen printing process, a vacuum. Sputtering, evaporation or mirror ink. Referring to McCaw Chart 3B, a protective layer 230 is formed on the flexible light guide plate 21, and the protective layer 230 covers the button pattern 22A, and the button pattern 220 is protected. Further, the method of forming the protective layer 230 may be a vacuum coating process. In other embodiments, the method of forming the protective layer 23A may further be: dipping the flexible light guide plate 21 having the button map t 220 into a solution containing a transparent oxide. Referring to FIG. 3C, in order to increase the button _ light rate, an optical film 26A may be formed on the second surface 214 of the tractable light guide plate 210, wherein the method of forming the optical film 260 may be printing. Alternatively, the optical film 260 may be attached to the second surface 214 of the flexible light guide plate 210 by attaching it to the I27612^lltwfdoc/g. Thereafter, a reflective layer 270 is formed on the optical film 260, wherein the method of forming the reflective layer 270 may be a vacuum coating process. Similarly, the reflective layer 270 may be attached to the optical film 260 in an attached manner. Furthermore, the optical film 260 or the reflective layer 270 may be attached only to the second surface 214 of the flexible light guide plate 210. #麦考图3D, the light source 240 is assembled into the reflector 250. In the present embodiment, the light source 240 is, for example, a light emitting diode of a point light source. However, the light source 240 can also be a cold cathode fluorescent lamp of a line source. The buckwheat test 3E' assembles the reflector 250 having the light source 240 to the side of the flexible light guide plate 21G. At the same time, as described above, the other side of the flexible light guide plate can also be assembled with the above-mentioned light source 24 〇 and the reflection cover 25 ’ (to the edge) to further enhance the brightness and uniform illumination. Thus far, the assembly process of the present invention 200 is substantially completed. After that, the button group·group I is again placed on the circuit board 3〇〇a. aBS Chi Zhi Yang issued (four) light f through
才能又射至使用純與由橡膠尋成之第一基板 通過可睛，本發明之光源所發出之光線在 本;入射至使用者的眼睛， 識按鍵圖案。、 （、使用者較良好之顯示亮度，以辨 羞二施例 圖二 I27612Sltwfd0C/g 流程大致與第一實施例相同，且構件之配置位置及功用亦 相同’因此相同之構件即以相同之標號標示，於此便不再 贅述。 請參考圖4，本實施例與第一實施例不同之處在於： 本實施例之按鍵組400的可撓性導光板410與第一實施例 之可撓性導光板210的形狀不同。在本實施例中，可撓性 導光板410是楔形導光板，因此光源24〇所投射出之光線 行經路徑受可撓性導光板410底面斜度影響，故能夠均勻 地自可撓性導光板410的表面出射。 此外，為了讓可撓性導光板410能夠平整地接觸電路 板300b，在可撓性導光板41〇與電路板300b之間也可以 配置填充材料層480。在本實施例中，此填充材料層48〇 配置於反射層270與電路板300b之間，且填充材料層48〇 之材質例如是具有彈性的樹脂。當使用者按壓按鍵圖案 220時，可撓性導光板410也會隨之變形並按壓填充材料 層480，以使填充材料層480變形並與電路板3〇〇b接觸。 然後，電路板300b會產生相對應的電子訊。當使用者停 止按壓按鍵圖案220之後，填充材料層48〇便會恢復至^ 本的形狀及高度。 知上所述，本發明之按鍵組至少具有下列之優點： 一、相較於習知採用透光性較差的ABS或pc所構成 之第二基板與由橡膠所構成之第一基板，本發明採用可撓 性導光板’而可撓性導光板可以是平行導光板或楔形導^ 板。當光線通過可撓性導光板及按鍵圖案之後，便到達使 12 本發明之按鍵組可以提供It can be shot again to use the first substrate which is purely made of rubber. The light emitted by the light source of the present invention passes through; the light is incident on the user's eyes, and the key pattern is recognized. (, the user's better display brightness, to distinguish the two examples. Figure II I27612Sltwfd0C / g process is roughly the same as the first embodiment, and the configuration position and function of the components are the same 'so the same components are the same number The description is omitted here. Referring to FIG. 4, the difference between the present embodiment and the first embodiment is that the flexible light guide plate 410 of the button group 400 of the present embodiment is flexible with the first embodiment. The shape of the light guide plate 210 is different. In the embodiment, the flexible light guide plate 410 is a wedge-shaped light guide plate, so that the light path of the light source 24 投射 is affected by the slope of the bottom surface of the flexible light guide plate 410, so that the light can be evenly distributed. The ground is emitted from the surface of the flexible light guide plate 410. Further, in order to allow the flexible light guide plate 410 to smoothly contact the circuit board 300b, a filling material layer may be disposed between the flexible light guide plate 41A and the circuit board 300b. 480. In this embodiment, the filling material layer 48 is disposed between the reflective layer 270 and the circuit board 300b, and the material of the filling material layer 48 is, for example, a resin having elasticity. When the user presses the button map At 220, the flexible light guide plate 410 is also deformed and pressed against the filling material layer 480 to deform the filling material layer 480 and contact the circuit board 3 〇〇 b. Then, the circuit board 300b generates corresponding electrons. After the user stops pressing the button pattern 220, the filling material layer 48 will return to the shape and height of the body. As described above, the button group of the present invention has at least the following advantages: 1. Compared with the habit It is known that a second substrate composed of ABS or pc having poor light transmittance and a first substrate composed of rubber are used. The present invention employs a flexible light guide plate' and the flexible light guide plate may be a parallel light guide plate or a wedge guide. When the light passes through the flexible light guide plate and the button pattern, it reaches 12 so that the button group of the present invention can be provided
I27612^lltwfdoc/g 用者的視線。相較於習知技術， 使用者良好之顯示亮度。 二、本發明也可以在可撓性導光板下配置光學 /或反射層，而光學膜片及/或反射層可使光線均勻分 因此按鍵組具有均勻的顯示亮度。 —雖然本發明已以較佳實施例揭露如上，然其並非用以 限定本發明，任何熟習此技藝者，在不脫離本發明之精神 和範圍内，當可作些許之更動與潤飾，因此本發明之=譜 範圍當視後附之申請專利範圍所界定者為準。 ”叹 【圖式簡單說明】 圖1繪示為習知的按鍵組的剖面示意圖。 圖2繪示為本發明第一實施例之按鍵組的剖面示咅 圖3A〜3E繪示為本發明第一實施例之按鍵組的組裝 製程流程圖。 & 圖4繪示為本發明第二實施例之按鍵組的剖面示咅 圖。 【主要元件符號說明】 100 :習知的按鍵組 110 :第一基板 120 :第二基板 130、220 :按鍵圖案 140 :第三基板 150、240 :光源 13 I276128ltwfdoc/g 200、400 :按鍵組 210、410 :可撓性導光板 212 :第一表面 214 ··第二表面 230 :保護層 250 :反射罩 260 :光學膜片 270 :反射層 300a、300b :電路板 4 8 0 :填充材料層I27612^lltwfdoc/g User's line of sight. The user has a good display brightness compared to conventional techniques. Second, the present invention can also be configured with an optical/reflective layer under the flexible light guide plate, and the optical film and/or the reflective layer can evenly distribute the light, so that the button group has a uniform display brightness. The present invention has been described above by way of a preferred embodiment, and is not intended to limit the invention, and it is intended that the invention may be modified and modified without departing from the spirit and scope of the invention. Inventive = Spectral range is subject to the definition of the scope of the patent application. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view showing a conventional button group. FIG. 2 is a cross-sectional view showing a button group according to a first embodiment of the present invention. FIGS. 3A to 3E are diagrams showing the present invention. FIG. 4 is a cross-sectional view showing a button group according to a second embodiment of the present invention. [Description of Main Components] 100: A conventional button group 110: a substrate 120: second substrate 130, 220: button pattern 140: third substrate 150, 240: light source 13 I276128ltwfdoc / g 200, 400: button group 210, 410: flexible light guide plate 212: first surface 214 · Second surface 230: protective layer 250: reflective cover 260: optical film 270: reflective layer 300a, 300b: circuit board 4 8 0: filling material layer
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