M366711 五、新型說明： 【新型所屬之技術領域】 ’且特別是有關於一種薄型 本新型是有關於一種鍵盤 標準鍵盤。 【先前技術】 冲人^著賴的進步，各式各樣的電子裝置已經充斥在現 及行動電咭等雷：壯來說，桌上型電腦、筆記型電繼 工等電子Μ，已經成為人射活紅作的必要 仓丨·^⑴來說冑用者需利用輸人裝置來操作電子裝置。 作。市=^鼠或鍵盤來進行移動游標或者輸人資料的動 盤…：見的鍵盤主要分為機械式鍵盤及薄膜式鍵 的機械結構種稱為剪刀腳(S—) 了乂有效縮短鍵程，進一步可縮減鍵盤的厚 X，使仔溥膜鍵盤愈來愈受到消費者喜愛。M366711 V. New description: [New technical field] ‘and especially related to a thin type The present invention relates to a keyboard standard keyboard. [Prior Art] The progress of rushing people, all kinds of electronic devices have been flooded with current and mobile power, etc.: Zhuang said, desktop computers, notebook-type electric relays and other electronic devices have become The necessary warehouse for a person to shoot a live red. ^ (1) The user needs to use the input device to operate the electronic device. Work. City = ^ mouse or keyboard to move the cursor or input data of the moving disk ...: See the keyboard is mainly divided into mechanical keyboard and membrane type of mechanical structure called scissors feet (S -) Further, the thickness X of the keyboard can be reduced, so that the keyboard of the scorpion membrane is more and more popular among consumers.
Ki 而薄膜式鍵盤仍然需要在每一個鍵帽下方設置彈 株的^腳結構。如此—來，鍵盤中仍需要大量的機構元 4得鍵盤的厚度無法進一步縮小。另外，相鄰的鍵帽 /、有間障’谷易讓灰塵、液體等異物落入鍵帽下方， 不僅難以清潔，更容易影響鍵帽作^ 【新型内容】 因此，本新型之一實施例是在提供一種薄型標準鍵 M366711 . 盤，其係用以連接於一電腦裝置，並且包括一底板，以及 設置於底板上的一線路板、一彈片固定板以及—外膜片。 線路板中具有多個薄膜開關，用以於受到按壓時輸出按鍵 訊號。彈片固定板上設置有多個金屬薄膜彈片。此些金屬 薄膜彈片分別對應位於各薄膜開關上。外膜片覆蓋於彈片 固定板上，並貼附於部分之底板。另外，外膜片具有多個 鍵帽，分別對應位於各金屬薄膜彈片上。 依據本新型之一實施例，薄型標準鍵盤更包括一光 • 源、一導光板及多個凸出物。光源設置在線路板上，用以 發射一光線。導光板設置在外膜片及彈片固定板之間，用 以導引光線佈滿導光板，使光線可穿透過每一個鍵帽之透 光圖案。另外’此些凸出物係設置於導光板上。當鍵帽其 中之义按壓時’鍵帽經由對應之一個凸出物及一個金屬 薄膜彈片按壓一個薄膜開關。 依據本新型另一實施例，薄型標準鍵盤更包括一光 源、一導光板及多個凸出物。光源設置在線路板上，用以 • 發射一光線。導光板設置於底板及線路板之間，用以導引 光線佈滿導光板，使光線可穿透過每一個鍵帽之透光圖 案。金屬薄暝彈片及凸出物分別位於彈片固定板相反之兩 表面上。當鏠帽其中之一受按壓時，鍵帽經由對應之一個 凸出物及一個金屬薄膜彈片按壓一個薄膜開關。 依據本新型之又一實施例，薄型標準鍵盤更包括一光 源及多個凸出物。光源設置於線路板上’用以發射一光線。 彈片固定板為一導光板，用以導引光線佈滿導光板，使光 線穿透過每—個鍵帽之透光圖案。金屬薄膜彈片及凸出物 4 M366711 分別設置於彈片固定板相反之兩表面上。當鍵帽其中之一 受按壓時，鍵帽經由對應之一個凸出物及一個金屬薄膜彈 片按壓一個薄膜開關。 依據本新型之再一實施例，底板具有一反光面，面朝 線路板。 依據本新型實施例之薄型標準鍵盤，利用設置在彈片 固定板上的金屬薄膜彈片，提供按鍵按壓的短行程按壓 感。另外，搭配包覆線路板及金屬薄膜彈片的外膜片，可 Φ 有效減少鍵盤的厚度，並使得薄型標準鍵盤具有良好的防 水、防塵效果。再者，利用底板作為反射片的方式，可以 減少薄型標準鍵盤的元件數量。 【實施方式】 依照本新型一實施例之薄型標準鍵盤，主要利用一外 膜片包覆薄型標準鍵盤之内部元件，並且將外膜片貼附於 部分之底板，藉以組裝形成薄型標準鍵盤，其係可提高外 _ 觀的整體性及組裝品質。 請同時參照第1A圖及第1B圖，第1A圖繪示依照本 新型一實施例的一種薄型標準鍵盤的立體圖，第1B圖繪示 第1A圖中沿A-A’線的剖面圖。本實施例之薄型標準鍵盤 100係可用以連接於一電腦設備，例如一桌上型電腦、一 筆記本型電腦或其他需要應用鍵盤來輸入資料的電腦設 備。薄型標準鍵盤100主要包括一底板110，以及設置於 底板110上之一線路板130、一彈片固定板150及一外膜 片170。線路板130設置於底板110上，並具有多個薄膜 M366711 開關130a。彈片固定板15〇設置於線路板13〇上，並且為 透光材質。多個金屬薄膜彈片151設置於彈片固定板15〇 上，益且分別對應位於各薄膜開關130a上。外膜片17〇貼 附於部分之底板110外側，以將線路板13〇及彈片固定板 150包覆於内。 外膜片170具有多個鍵帽171，分別對應位於各金屬 薄膜彈片151上，且各鍵帽171具有一個透光圖案 當其中一個或多個鍵帽171受按壓時，受按壓的鍵帽171 _ 係與對應之金屬薄膜彈片151 ’下壓對應之薄膜開關 130a，以輸出一按鍵訊號。 請參照第1C圖，其繪示第1B圖之薄型標準鍵盤之爆 炸圖。於一實施例中，底板110係為一凹槽狀，並具有一 底部111及一側壁112，侧壁in係圍繞底部111。線路板 130設置在底部in上。實際應用上，線路板130具有多個 薄膜開關130a，用以於受按壓時電性連通，以輸出按鍵訊 號。有關於薄膜開關130a之内容將詳述於後。彈片固定板 _ 150上設置有多個金屬薄膜彈片151，且各金屬薄膜彈片 151係對應位於各薄膜開關13如上。另外，各鍵帽171分 別對應位於各金屬薄膜彈片151上。外膜片170係貼附於 侧壁112外侧及部分底部hi外侧。 實際應用上，外膜片170例如是熱塑性聚胺基甲酸酯 (Thermoplastic Polyurethane，TPU)薄膜，鍵帽 171 例如 是紫外光硬化樹酯，並且可利用注射以及紫外光照射成型 的方式形成於外膜片170上。此外，外膜片170相反於鍵 帽171之表面具有不透光之一印刷層（未繪示於圖中）’印 M366711 刷層對應於各鍵帽171之處具有雷射雕刻之缺口，用以形 成透光圖案171a。 進一步來說’薄型標準鍵盤100更包括—光源12〇及 一導光板160。光源120設置於線路板13〇上，用以發射 一光線。於一實施例中’導光板160設置於外膜片j及 彈片固定板15 0之間’用以導引光線佈滿於整片導光板16〇 中’使得光線可以對應穿透過每一個鍵帽171的透光圖案 171a (透光圖案171a繪示於第1A圖）。此外，於一實施例 φ 中’底板110面朝線路板13〇之表面係為一鏡面之反光面， 用以朝透光圖案171a反射光線，以提升透過透光圖案171a 之光線的亮度。 導光板160上設置有多個凸出物140，分別對應位於 各金屬薄膜彈片151上。當一個或多個鍵帽171受按壓時， 受按壓之鍵帽171經由對應之凸出物140下壓對應之金屬 •薄膜彈片151，並由金屬薄膜彈片151按壓對應之薄膜開 關130a，以輸出按鍵訊號。 φ 實際應用上，各金屬薄膜彈片151可為一圓頂狀之金 屬薄膜彈片（metal dome)。當金屬薄膜彈片151受鍵帽ι71 下壓時’其係發生形變而按壓到下方的薄膜開關130a。當 鍵帽171停止受力按壓時，金脣薄膜彈片151便恢復至原 先的圓頂狀，同時推頂鍵帽171回到按壓前的位置。以此 方式’金屬薄膜彈片151可以提供予鍵帽171 —短行程。 當使用者在敲擊薄型標準鍵盤100時，會有明顯的按壓 感，讓使用者得知鍵帽171疋否確實被按壓。 於一實施例中，侧壁112係圍繞線路板130、彈片固 7 M366711 定板150及導光板160,且侧壁112之 路板13G、金屬薄膜彈片m、彈片固定^略相等於線 疋板15〇、瀑 凸出物140等薄型標準鍵盤1〇〇内部 ^ ,-u , 千堆®之咼度。精 由外膜片170貼附於側壁112外以及底部u 將各鍵帽171對應固定在各金屬薄膜彈片ΐ5ι及各凸^物 ⑽上^因此’薄型標準鍵盤100中不需要額外的卡扣、 定位結構來固定鍵帽m，可以簡化薄型標準鍵盤⑽的 機構設計，並且減少元件數量。另外，藉由外膜片17〇包 覆於底板110及薄型標準鍵盤1〇〇中的元件，可以避免灰 塵、水滴落入鍵盤内的問題。 以下係針對線路板來進行說明。請參照第2圖，其繪 不依照本新型一實施例之一種線路板的剖面圖。線路板23〇 包括下骐片231、一隔片層235及一上膜片239。隔片層 235夾設於下膜片231及上膜片239之間。下膜片231面 朝上膜片239之表面具有一下電極233，上膜片239面朝 下膜片231之表面具有一上電極237。隔片層235具有一 開口 235&，部分之上電極237及部分之下電極233係暴露 ? 5a對應於開口 235a處之上電極237及下電極 233係形成薄膜開關230a。 第2圖中僅繪示一個開口 23元，並以一個薄膜開關 23〇&為例進行說明。然而，實際應用上，隔片層235係具 有多個開口 235a。此些開口 235a分別對應位於各金屬彈片 下^ ’±並對應形成多個薄膜開關230a。當使用者施力按壓 鍵帽時，鍵帽經由凸出物及金屬薄膜彈片按壓對應之薄膜 開關23〇a ’使得上電極237接觸於下電極233而形成電性 8 M366711 通路，據以輸出按鍵訊號。 前述之實施例中，導光板160係以設置於彈片固定板 150及外膜片170之間為例，如第1C圖所示，然而導光板 160之位置並不以此為限。請參照第3圖，其繪示依照本 新型另一實施例之一種薄型標準鍵盤之***圖。薄型標準 鍵盤300之導光板360設置於底板310及線路板330之間， 用以導引光源320發射之光線佈滿導光板360，以使光線 可穿透過每一個鍵帽371所對應之透光圖案。如第3圖所 φ 示’金屬薄膜彈片351位於彈片固定板350面朝線路板33〇 的表面上’此些凸出物340設置於彈片固定板35〇相反於 金屬薄膜彈片351之表面上’並且分別對應位於各鍵帽gw 下方。當一個或多個鍵帽371受按壓時，鍵帽371經由對 應之凸出物340及金屬薄膜彈片351，按壓對應之薄膜開 關330a，以輸出按鍵訊號。 請參照第4圖，其繪示依照本新型又一實施例之一種 薄型標準鍵盤之***圖。薄型標準鍵盤働中，彈片固定 板450係為一導光板，用㈣引光源42〇發射之光線佈滿 彈片固定板45〇，使光線可穿透過每一個鍵帽471所對應 之透光圖案。如第4圖所示，金屬薄膜彈片451位於彈片 固定板450面朝線路板楊的表面上，此些凸出物楊設 置於彈片固定板450相反於金屬薄膜彈片4S1之表面上， f且分別對應位於各鍵帽471下方。當一個或多個鍵帽471 又按壓時鍵巾目471經由對應之凸出物物及金屬薄膜彈 片451’按壓對應之薄膜開關4心，以輸出按鍵訊號。利 用彈片固定板450料導光板之方式，不需魏外設置導 M366711 光板，可以減少薄型標準鍵盤4〇〇之元件數目，並且降低 薄型標準鍵盤400之厚度。 另外一方面，依照本新型實施例之底板u〇並不以如 第1B圖所示之凹槽狀為限。舉例來說，底板亦可為盤狀。 請參照第5圖，其繪示依照本新型再一實施例之一種薄型 標準鍵盤之剖面圖。薄型標準鍵盤50〇之底板51〇具有一 底部511及圍繞底部511之一周緣區域513。線路板53〇 設置於底部511上。彈片固定板55〇設置於線路板53〇上。 φ 外膜片570覆蓋導光板560、彈片固定板550及線路板530 等薄型標準鍵盤500之内部元件，並貼附於周緣區域m3。 本實施例中，藉由外膜片170貼附於周緣區域513之方式， 將各鍵帽571對應固定在各金屬薄膜彈片551、各凸出物 540上。薄型標準鍵盤500中不需要額外的卡扣、定位結 構來固定鍵帽571。 薄型標準鍵盤500中，導光板560係可配置於彈片固 定板550及外膜片570之間，或者配置於底部511及線路 φ 板530之間。此外，彈片固定板550亦可為導光板，用以 導引光源520發射之光線佈滿彈片固定板550。此些配置 方式係與前述第1C圖、第3圖及第4圖所示之實施例相 同，此處不再重複敘述。 請參照第6圖，其繪示依照本新型另一實施例之一種 薄型標準鍵盤之剖面圖。薄型標準鍵盤600之底板610具 有底部611、侧壁612及周緣區域613。周緣區域613圍繞 於底部6U，側壁612位於底部611及周緣區域613之間。 . 外膜片670係貼附於周緣區域613。各鍵帽671分別對應 M366711 位於各金屬薄膜彈片651上。本實施例中，侧壁612係 繞線路板630、彈片固定板650及導光板66〇,且側壁 之高度約略相等於線路板630、金屬薄膜彈片651、彈片2 疋板650、導光板660、凸出物640等元件之堆疊高户固 就是說，導光板66〇及周緣區域613之間並不具有高1也 使得外膜片670可平整地覆蓋於導光板66〇及周緣區域 613 〇 巧 上述依照本新型實施方式之薄型標準鍵盤，藉由 片貼附於底板之方式，使㈣型標準鍵盤具有防^ 蹲 之優點。此外，外膜片貼附於底板之方式，使薄型^ 盤不需要應用額外的卡扣、定位結構來固定鍵帽 ， 化薄型標準鍵盤的機構設計，進而降低成本。再者簡 金屬薄膜彈片搭配外膜片包覆之方式，可以大幅減少^ 的厚度，具有輕薄且攜帶方便之優點。另外， ^ 反射光線之方式，係可提高錢的湘率。料^來 板:為導光板之方式，不需在額外設置導光：彈 了減夕元件數目，進而降低鍵盤厚声。 儀 _雖然、本新型已財财式揭^上，然其並非用 =本新型’任何熟習此技藝者’在不脫離本新=限 範圍内’當可作各種之更動與潤飾，因，精砷和 圍當視後附之申請專利範圍所界定者為準。 保護範 【圖式簡單說明】 為讓本新型之上述和其他目 能更明顯易懂，所附圖式之說明如下| f與實施例 M366711 第1A圖繪示依照本新型一實施例的一種薄型標準鍵 盤的立體圖。 第1Β圖繪示第1Α圖中沿Α-Α’線的剖面圖。 第1C圖繪示第1Β圖之薄型標準鍵盤之***圖。 第2圖繪示依照本新型一實施例之一種線路板的剖面 圖。 第3圖繪示依照本新型另一實施例之一種薄型標準鍵 盤之***圖。 • 第4圖繪示依照本新型又一實施例之一種薄型標準鍵 盤之***圖。 第5圖繪示依照本新型再一實施例之一種薄型標準鍵 盤之剖面圖。 第6圖繪示依照本新型另一實施例之一種薄型標準鍵 盤之剖面圖。 【主要元件符號說明】 100 :薄型標準鍵盤 110 :底板 111 :底部 112 :側壁 120 :光源 130 :線路板 130a :薄膜開關 140 :凸出物 150 :彈片固定板 400 :薄型標準鍵盤 420 :光源 430 :線路板 430a :薄膜開關 440 :凸出物 450 :彈片固定板 451 :金屬薄膜彈片 471 :鍵帽 500 :薄型標準鍵盤 12 M366711 151 :金屬薄膜彈片 160 :導光板 170 :外膜片 171 :鍵帽 171a :透光圖案 230 :線路板 230a :薄膜開關 231 :下膜片 _ 233 :下電極 235 :隔片層 235a :開口 237 :上電極 239 :上膜片 300 :薄型標準鍵盤 310 :底板 320 :光源 _ 330 :線路板 330a :薄膜開關 340 :凸出物 350 :彈片固定板 351 :金屬薄膜彈片 360 :導光板 371 :鍵帽 510 :底板 511 :底部 513 :周緣區域 520 :光源 530 :線路板 550 :彈片固定板 551 :金屬薄膜彈片 540 :凸出物 560 :導光板 570 :外膜片 571 :鍵帽 600 ··薄型標準鍵盤 610 :底板 611 :底部 612 :側壁 613 :周緣區域 630 :線路板 640 :凸出物 650 :彈片固定板 651 :金屬薄膜彈片 660 :導光板 670 :外膜片 671 :鍵帽 13Ki and the membrane keyboard still need to set the structure of the missile under each keycap. So—the keyboard still needs a lot of mechanism elements. 4 The thickness of the keyboard cannot be further reduced. In addition, the adjacent keycaps/blocks are easy to allow foreign matter such as dust and liquid to fall under the keycap, which is not only difficult to clean, but also more susceptible to the keycap. [New content] Therefore, an embodiment of the present invention A thin standard key M366711 is provided for connecting to a computer device, and includes a bottom plate, a circuit board disposed on the bottom plate, a spring fixing plate, and an outer film. The circuit board has a plurality of membrane switches for outputting a button signal when pressed. A plurality of metal film shrapnels are disposed on the shrapnel fixing plate. The metal film shrapnels are respectively located on the respective membrane switches. The outer membrane is covered on the elastic fixing plate and attached to a part of the bottom plate. In addition, the outer membrane has a plurality of key caps respectively corresponding to the respective metal film elastic sheets. According to an embodiment of the present invention, the thin standard keyboard further includes a light source, a light guide plate and a plurality of protrusions. The light source is placed on the circuit board to emit a light. The light guide plate is disposed between the outer film piece and the elastic piece fixing plate to guide the light to fill the light guide plate so that the light can penetrate the light transmissive pattern of each of the key caps. Further, such protrusions are disposed on the light guide plate. When the keycap is pressed, the keycap presses a membrane switch via a corresponding one of the projections and a metal film spring. According to another embodiment of the present invention, the thin standard keyboard further includes a light source, a light guide plate and a plurality of protrusions. The light source is placed on the board to • emit a light. The light guide plate is disposed between the bottom plate and the circuit board to guide the light to fill the light guide plate, so that the light can penetrate the light transmission pattern of each key cap. The metal thin ridges and projections are respectively located on opposite surfaces of the elastic plate fixing plate. When one of the caps is pressed, the keycap presses a membrane switch via a corresponding one of the projections and a metal foil spring. According to still another embodiment of the present invention, the thin standard keyboard further includes a light source and a plurality of protrusions. The light source is disposed on the circuit board to emit a light. The elastic plate fixing plate is a light guiding plate for guiding the light to fill the light guiding plate, so that the light penetrates through the light transmitting pattern of each of the key caps. Metal film shrapnel and projections 4 M366711 are respectively disposed on opposite surfaces of the elastic plate fixing plate. When one of the keycaps is pressed, the keycap presses a membrane switch via a corresponding one of the projections and a metal film spring. According to still another embodiment of the present invention, the base plate has a reflective surface facing the circuit board. According to the thin standard keyboard of the novel embodiment, the metal film shrapnel provided on the elastic plate fixing plate is provided with a short stroke pressing feeling of the button pressing. In addition, with the outer diaphragm covering the circuit board and the metal film shrapnel, the thickness of the keyboard can be effectively reduced, and the thin standard keyboard has good water and dustproof effects. Furthermore, by using the bottom plate as a reflection sheet, the number of components of the thin standard keyboard can be reduced. [Embodiment] A thin standard keyboard according to an embodiment of the present invention mainly uses an outer film to cover the inner components of the thin standard keyboard, and attaches the outer film to the bottom plate of the part, thereby assembling and forming a thin standard keyboard. It can improve the integrity and assembly quality of the exterior. Please refer to FIG. 1A and FIG. 1B simultaneously. FIG. 1A is a perspective view of a thin standard keyboard according to an embodiment of the present invention, and FIG. 1B is a cross-sectional view taken along line A-A' of FIG. 1A. The thin standard keyboard 100 of the present embodiment can be used to connect to a computer device such as a desktop computer, a notebook computer or other computer device that requires an application keyboard to input data. The thin standard keyboard 100 mainly includes a bottom plate 110, and a circuit board 130, a spring fixing plate 150 and an outer film 170 disposed on the bottom plate 110. The circuit board 130 is disposed on the bottom plate 110 and has a plurality of film M366711 switches 130a. The elastic plate fixing plate 15 is disposed on the circuit board 13A and is made of a light transmissive material. A plurality of metal film elastic pieces 151 are disposed on the elastic plate fixing plate 15A, and are respectively located corresponding to the respective film switches 130a. The outer diaphragm 17 is attached to the outside of the portion of the bottom plate 110 to cover the wiring board 13 and the elastic fixing plate 150. The outer diaphragm 170 has a plurality of key caps 171 respectively corresponding to the respective metal film elastic sheets 151, and each of the key caps 171 has a light transmitting pattern. When one or more of the keycaps 171 are pressed, the pressed keycap 171 The film switch 130a corresponding to the corresponding metal film shrapnel 151' is pressed to output a button signal. Please refer to FIG. 1C, which shows the explosion map of the thin standard keyboard of FIG. 1B. In one embodiment, the bottom plate 110 has a groove shape and has a bottom portion 111 and a side wall 112 surrounding the bottom portion 111. The circuit board 130 is disposed on the bottom in. In practical applications, the circuit board 130 has a plurality of membrane switches 130a for electrically connecting when pressed to output a button signal. The content of the membrane switch 130a will be described in detail later. A plurality of metal film shingles 151 are disposed on the shrapnel fixing plate _150, and each of the metal film shingles 151 is correspondingly disposed on each of the film switches 13. Further, each of the keycaps 171 is located on each of the metal film elastic sheets 151, respectively. The outer diaphragm 170 is attached to the outer side of the side wall 112 and to the outer side of the bottom portion hi. In practical applications, the outer diaphragm 170 is, for example, a thermoplastic polyurethane (TPU) film, and the key cap 171 is, for example, a UV-curable resin, and can be formed by injection and ultraviolet light irradiation. On the diaphragm 170. In addition, the outer film 170 has a opaque printing layer opposite to the surface of the key cap 171 (not shown). The printing M366711 brush layer has a laser-engraved notch corresponding to each of the key caps 171. To form a light transmissive pattern 171a. Further, the thin standard keyboard 100 further includes a light source 12A and a light guide plate 160. The light source 120 is disposed on the circuit board 13 to emit a light. In an embodiment, the light guide plate 160 is disposed between the outer film piece j and the elastic piece fixing plate 150 to guide the light to fill the entire light guide plate 16' so that the light can penetrate through each of the key caps. The light-transmitting pattern 171a of 171 (the light-transmitting pattern 171a is shown in FIG. 1A). In addition, in an embodiment φ, the surface of the substrate 110 facing the circuit board 13 is a mirror-reflecting surface for reflecting light toward the light-transmitting pattern 171a to enhance the brightness of the light transmitted through the light-transmitting pattern 171a. The light guide plate 160 is provided with a plurality of protrusions 140 corresponding to the respective metal film elastic sheets 151. When the one or more key caps 171 are pressed, the pressed keycap 171 presses the corresponding metal film elastic piece 151 via the corresponding protrusion 140, and presses the corresponding film switch 130a by the metal film elastic piece 151 to output Button signal. φ In practical applications, each of the metal film domes 151 may be a dome-shaped metal dome. When the metal film elastic piece 151 is pressed by the key cap ι71, it is deformed and pressed to the lower film switch 130a. When the keycap 171 stops pressing, the gold lip film 151 returns to the original dome shape, and the push keycap 171 is returned to the position before the pressing. In this way, the metal film dome 151 can be provided to the keycap 171 for a short stroke. When the user taps the thin standard keyboard 100, there is a significant feeling of pressing, letting the user know if the keycap 171 is actually pressed. In one embodiment, the side wall 112 surrounds the circuit board 130, the elastic piece 7 M366711 fixed plate 150 and the light guide plate 160, and the side plate 112 of the road plate 13G, the metal film elastic piece m, and the elastic piece are slightly equal to the wire slab 15 〇, waterfall bulge 140 and other thin standard keyboard 1 〇〇 internal ^, -u, thousands of stacks of 咼. The outer cover sheet 170 is attached to the outer side of the side wall 112 and the bottom portion u. The key caps 171 are correspondingly fixed to the respective metal film spring pieces ΐ5ι and the respective protrusions (10). Therefore, no additional buckle is required in the thin standard keyboard 100. Positioning the structure to secure the keycap m simplifies the mechanical design of the thin standard keyboard (10) and reduces the number of components. Further, by covering the element in the bottom plate 110 and the thin standard keyboard 1 by the outer film sheet 17, the problem that dust and water droplets fall into the keyboard can be avoided. The following is a description of the circuit board. Referring to Figure 2, there is shown a cross-sectional view of a circuit board which is not in accordance with an embodiment of the present invention. The circuit board 23A includes a lower jaw 231, a spacer layer 235 and an upper diaphragm 239. The spacer layer 235 is interposed between the lower diaphragm 231 and the upper diaphragm 239. The surface of the lower diaphragm 231 facing the upper diaphragm 239 has a lower electrode 233, and the surface of the upper diaphragm 239 facing the lower diaphragm 231 has an upper electrode 237. The spacer layer 235 has an opening 235 & a portion of the upper electrode 237 and a portion of the lower electrode 233 are exposed. 5a corresponds to the upper electrode 237 and the lower electrode 233 at the opening 235a to form the membrane switch 230a. Only one opening 23 is shown in Fig. 2, and a thin film switch 23〇& is taken as an example for illustration. However, in practical applications, the spacer layer 235 has a plurality of openings 235a. The openings 235a are respectively located under the respective metal domes and correspondingly form a plurality of membrane switches 230a. When the user presses the keycap, the keycap presses the corresponding membrane switch 23〇a' via the protrusion and the metal foil spring to make the upper electrode 237 contact the lower electrode 233 to form an electrical 8 M366711 path, and accordingly the output button Signal. In the foregoing embodiment, the light guide plate 160 is disposed between the elastic plate fixing plate 150 and the outer film piece 170 as shown in FIG. 1C. However, the position of the light guide plate 160 is not limited thereto. Please refer to FIG. 3, which illustrates an exploded view of a thin standard keyboard in accordance with another embodiment of the present invention. The light guide plate 360 of the thin standard keyboard 300 is disposed between the bottom plate 310 and the circuit board 330 for guiding the light emitted by the light source 320 to fill the light guide plate 360 so that the light can penetrate through the light transmission corresponding to each of the key caps 371. pattern. As shown in Fig. 3, the "metal film elastic piece 351 is located on the surface of the elastic piece fixing plate 350 facing the circuit board 33". These projections 340 are disposed on the surface of the elastic piece fixing plate 35 opposite to the metal film elastic piece 351. And corresponding to each of the keycaps gw below. When one or more of the keycaps 371 are pressed, the keycap 371 presses the corresponding film switch 330a via the corresponding protrusion 340 and the metal film spring 351 to output a button signal. Please refer to FIG. 4, which shows an exploded view of a thin standard keyboard according to still another embodiment of the present invention. In the thin standard keyboard, the elastic plate fixing plate 450 is a light guide plate, and the light emitted by the (four) light source 42 is covered with the elastic plate fixing plate 45〇, so that the light can penetrate the light transmission pattern corresponding to each of the key caps 471. As shown in FIG. 4, the metal film elastic piece 451 is located on the surface of the elastic piece fixing plate 450 facing the circuit board yang, and the protrusions Yang are disposed on the surface of the elastic piece fixing plate 450 opposite to the metal film elastic piece 4S1, and respectively Correspondingly located below each keycap 471. When the one or more keycaps 471 are pressed again, the key towel 471 presses the corresponding membrane switch 4 through the corresponding protruding object and the metal film spring 451' to output a button signal. By using the shrapnel fixing plate 450 material light guide plate, the M366711 light plate can be disposed without the need of Wei, and the number of components of the thin standard keyboard can be reduced, and the thickness of the thin standard keyboard 400 can be reduced. On the other hand, the bottom plate u〇 according to the embodiment of the present invention is not limited to the groove shape as shown in Fig. 1B. For example, the bottom plate can also be disk shaped. Referring to Figure 5, a cross-sectional view of a thin standard keyboard in accordance with still another embodiment of the present invention is shown. The bottom plate 51 of the thin standard keyboard has a bottom 511 and a peripheral region 513 surrounding the bottom 511. The circuit board 53 is disposed on the bottom 511. The elastic plate fixing plate 55 is disposed on the circuit board 53A. The φ outer diaphragm 570 covers the inner components of the thin standard keyboard 500 such as the light guide plate 560, the elastic plate fixing plate 550, and the wiring board 530, and is attached to the peripheral region m3. In the present embodiment, each of the key caps 571 is fixed to each of the metal film elastic pieces 551 and the respective protrusions 540 by attaching the outer film piece 170 to the peripheral edge region 513. No additional snaps and positioning structures are required in the thin standard keyboard 500 to secure the keycap 571. In the thin standard keyboard 500, the light guide plate 560 can be disposed between the elastic plate fixing plate 550 and the outer film piece 570, or between the bottom plate 511 and the line φ plate 530. In addition, the elastic plate fixing plate 550 can also be a light guide plate for guiding the light emitted by the light source 520 to fill the elastic plate fixing plate 550. These configurations are the same as those of the first embodiment shown in Figs. 1C, 3, and 4, and will not be repeated here. Please refer to FIG. 6, which is a cross-sectional view of a thin standard keyboard according to another embodiment of the present invention. The bottom plate 610 of the thin standard keyboard 600 has a bottom 611, side walls 612 and a peripheral region 613. The peripheral region 613 surrounds the bottom portion 6U and the side wall 612 is located between the bottom portion 611 and the peripheral edge region 613. The outer diaphragm 670 is attached to the peripheral region 613. Each of the key caps 671 is located on each of the metal film shingles 651 corresponding to M366711. In this embodiment, the sidewall 612 is wound around the circuit board 630, the elastic plate fixing plate 650, and the light guide plate 66, and the height of the side wall is approximately equal to the circuit board 630, the metal film elastic piece 651, the elastic piece 2, the slab 650, and the light guide plate 660. The stacking of the components such as the protrusions 640 is high, that is, the height between the light guide plate 66 and the peripheral region 613 is not high, so that the outer film sheet 670 can be evenly covered on the light guide plate 66 and the peripheral region 613. In the above-mentioned thin standard keyboard according to the embodiment of the present invention, the (four) type standard keyboard has the advantage of preventing the 藉 by means of the sheet attached to the bottom plate. In addition, the outer film is attached to the bottom plate, so that the thin plate does not need to apply an additional buckle and positioning structure to fix the key cap, and the mechanism design of the thin standard keyboard is reduced, thereby reducing the cost. In addition, the thin metal film shrapnel is coated with the outer film to greatly reduce the thickness of the film, and has the advantages of being light and thin and convenient to carry. In addition, ^ the way to reflect light, can increase the rate of money. Material ^ to the board: the way of the light guide plate, no need to set the additional light guide: play the number of eve components, and thus reduce the thick sound of the keyboard. Instrument_Although this new type has been unveiled, it is not used = this new type 'anyone who is familiar with this skill' can not make a variety of changes and refinements, because of The definition of arsenic and the scope of the patent application attached to it is subject to the definition of patent application. MODE FOR CARRYING OUT THE INVENTION To make the above and other aspects of the present invention more apparent, the description of the drawings is as follows: f and embodiment M366711 FIG. 1A illustrates a thin type according to an embodiment of the present invention. A perspective view of a standard keyboard. Figure 1 is a cross-sectional view along the Α-Α' line in the first figure. Figure 1C shows an exploded view of the thin standard keyboard of Figure 1. 2 is a cross-sectional view of a circuit board in accordance with an embodiment of the present invention. Figure 3 is an exploded view of a thin standard keyboard in accordance with another embodiment of the present invention. • Figure 4 is an exploded view of a thin standard keyboard in accordance with yet another embodiment of the present invention. Fig. 5 is a cross-sectional view showing a thin standard keyboard according to still another embodiment of the present invention. Figure 6 is a cross-sectional view showing a thin standard keyboard in accordance with another embodiment of the present invention. [Main component symbol description] 100: Thin standard keyboard 110: Base plate 111: Bottom 112: Side wall 120: Light source 130: Circuit board 130a: Membrane switch 140: Projection 150: Shrapnel fixing plate 400: Thin standard keyboard 420: Light source 430 Circuit board 430a: Membrane switch 440: Projection 450: Shrapnel fixing plate 451: Metal film shrapnel 471: Key cap 500: Thin standard keyboard 12 M366711 151: Metal film shrapnel 160: Light guide plate 170: Outer film piece 171: Key Cap 171a: light transmissive pattern 230: wiring board 230a: membrane switch 231: lower diaphragm _233: lower electrode 235: spacer layer 235a: opening 237: upper electrode 239: upper diaphragm 300: thin standard keyboard 310: bottom plate 320 : Light source _ 330 : Circuit board 330a : Membrane switch 340 : Projection 350 : Shrapnel fixing plate 351 : Metal film shrapnel 360 : Light guide plate 371 : Key cap 510 : Base plate 511 : Bottom portion 513 : Peripheral region 520 : Light source 530 : Line Plate 550: Shrapnel fixing plate 551: Metal film shrapnel 540: Projection 560: Light guide plate 570: Outer film piece 571: Key cap 600 · Thin standard keyboard 610: Bottom plate 611: Bottom 612: Side wall 613: Peripheral region 630: Circuit board 640 : Projection 650 : Shrapnel fixing plate 651 : Metal film shrapnel 660 : Light guide plate 670 : Outer diaphragm 671 : Key cap 13