TW202240620A

TW202240620A - Optical keyswitch

Info

Publication number: TW202240620A
Application number: TW110138214A
Authority: TW
Inventors: 張立德; 周柏岳
Original assignee: 達方電子股份有限公司
Priority date: 2021-04-07
Filing date: 2021-10-14
Publication date: 2022-10-16
Also published as: CN115206716A; CN217061859U; TWI811813B

Abstract

An optical keyswitch includes a switch module, a keycap, a supporting mechanism, a resilient member and a light source. The switch module includes a circuit board, an emitter and a receiver. The emitter emits a light signal to the receiver. A keycap projection of the keycap is projected on the circuit board. The supporting mechanism is disposed under the keycap to support the keycap to move downward or upward above the circuit board. The resilient member transversely connects frames of the supporting mechanism, and divides the keycap projection into two areas. The light source is connected to the circuit board. The light source is located in one area to illuminate a light emitting area of the keycap. The emitter and the receiver are located in the other area, and are triggered by the movement of the keycap or the supporting mechanism.

Description

光開關按鍵Optical switch button

本發明一般係關於一種光開關按鍵，具體而言，本發明係關於一種按壓鍵帽使光訊號接收狀態變化而致動開關的光開關按鍵。The present invention generally relates to an optical switch key, and specifically, the present invention relates to an optical switch key for actuating a switch by pressing the key cap to change the receiving state of the optical signal.

薄膜開關按鍵及機械式按鍵為習知鍵盤常用的按鍵類型。薄膜開關按鍵及機械式按鍵主要的差異在於產生信號的電路結構不同。一般而言，薄膜開關按鍵是利用薄膜電路層作為信號產生的開關元件，當按壓鍵帽觸發薄膜電路層時，上電路層變形而使得上電路層的開關接點接觸下電路層之對應開關接點，進而使薄膜開關導通而產生信號。然而，薄膜電路層經過頻繁使用或在施力不當的情況下容易損壞，難以維修，且使用者按壓鍵帽觸發薄膜電路層時，缺乏鮮明的段差回饋，造成按壓的手感不佳，無法滿足使用者的操縱感。Membrane switch keys and mechanical keys are commonly used key types in conventional keyboards. The main difference between the membrane switch button and the mechanical button is that the circuit structure that generates the signal is different. Generally speaking, a membrane switch button uses a thin film circuit layer as a switch element for signal generation. When the keycap is pressed to trigger the thin film circuit layer, the upper circuit layer is deformed so that the switch contacts of the upper circuit layer contact the corresponding switch contacts of the lower circuit layer. point, and then the membrane switch is turned on to generate a signal. However, the thin-film circuit layer is easily damaged after frequent use or under the condition of improper force, and it is difficult to repair. Moreover, when the user presses the keycap to trigger the thin-film circuit layer, there is no clear step feedback, resulting in a poor pressing feel, which cannot meet the needs of use. the sense of manipulation.

機械式按鍵則是利用金屬片與金屬接點的導通與否作為信號產生的開關元件。然而，金屬片及金屬接點容易因撞擊磨損，影響按鍵的使用壽命，也會因水氣而造成金屬片或金屬接點腐鏽，使得導通不良，影響按鍵的穩定性。再者，習知機械式按鍵因為結構較複雜且體積較大，一般不適合應用於對薄型化要求較高的可攜式電子裝置，例如筆記型電腦。The mechanical key is to use the conduction or non-conduction between the metal sheet and the metal contact as a switching element for signal generation. However, metal sheets and metal contacts are easy to wear due to impact, which affects the service life of the buttons, and also causes corrosion of the metal sheets or metal contacts due to moisture, resulting in poor conduction and affecting the stability of the buttons. Furthermore, conventional mechanical buttons are not suitable for portable electronic devices such as notebook computers due to their complex structures and large volumes.

本發明之一目的在於提供一種光開關按鍵，其利用光發射器及光接收器構成的開關模組，並透過按鍵中的部件隨著按壓行程改變光訊號的接收狀態，提供快速又精確的觸發功能。One object of the present invention is to provide an optical switch key, which uses a switch module composed of an optical transmitter and an optical receiver, and changes the receiving state of the optical signal through the components in the key along with the pressing stroke to provide fast and accurate triggering Function.

本發明之另一目的在於提供一種光開關按鍵，其整合光開關於低矮空間的按鍵結構，以適合應用於可攜式電子裝置。Another object of the present invention is to provide an optical switch key, which integrates the key structure of the optical switch in a low space, so as to be suitable for application in portable electronic devices.

本發明之又一目的在於提供一種光開關按鍵，其包含光開關及機械式回復機構，不僅提供機械式按鍵的按壓手感，還增進維修可行性。Yet another object of the present invention is to provide an optical switch key, which includes an optical switch and a mechanical return mechanism, which not only provides the pressing feel of a mechanical key, but also improves maintenance feasibility.

於一實施例，本發明提供一種光開關按鍵，包含開關模組、鍵帽、支撐機構、彈性件以及背光光源與擋片。開關模組，具有電路板、光發射器及光接收器，電路板具有第一面以及第二面，光發射器與光接收器電連接電路板；其中光發射器對光接收器發射光訊號。鍵帽位於該第一面上方，該鍵帽具有一出光區，且該鍵帽於該電路板投影形成一鍵帽投影區。支撐機構設置於該鍵帽下方並支撐該鍵帽相對於該電路板上下移動；彈性件橫向地連接該支撐機構，並且將該鍵帽投影區分隔為一第一區及一第二區。擋片受該鍵帽或該支撐機構帶動而上下移動。背光光源電連接該電路板。背光光源位於該第一區以照明該鍵帽之該出光區，而該光發射器及該光接收器則位於該第二區，該擋片隨該鍵帽或該支撐機構移動而觸發該開關模組。In one embodiment, the present invention provides an optical switch key, including a switch module, a key cap, a supporting mechanism, an elastic member, a backlight source and a blocking plate. The switch module has a circuit board, an optical transmitter and an optical receiver, the circuit board has a first surface and a second surface, and the optical transmitter and the optical receiver are electrically connected to the circuit board; wherein the optical transmitter transmits an optical signal to the optical receiver . The key cap is located above the first surface, the key cap has a light emitting area, and the key cap is projected on the circuit board to form a key cap projection area. The support mechanism is arranged under the keycap and supports the keycap to move up and down relative to the circuit board; the elastic member connects the support mechanism transversely and divides the keycap projection area into a first area and a second area. Driven by the keycap or the support mechanism, the blocking piece moves up and down. The backlight source is electrically connected to the circuit board. The backlight light source is located in the first area to illuminate the light emitting area of the keycap, while the light emitter and the light receiver are located in the second area, and the shutter moves with the keycap or the support mechanism to trigger the switch mod.

於至少一實施例中，光源設置於第一面，且光發射器及光接收器位於第二面。In at least one embodiment, the light source is disposed on the first surface, and the light emitter and the light receiver are located on the second surface.

於至少一實施例中，電路板具有切槽，該擋片穿過該切槽而遮斷該光發射器及該光接收器間之光路。In at least one embodiment, the circuit board has a slot, and the blocker passes through the slot to block the light path between the light transmitter and the light receiver.

於另一實施例，本發明提供一種光開關按鍵，包含開關模組、鍵帽、支撐機構、彈性件、背光光源以及擋片。開關模組具有電路板與光開關，電路板具有第一面以及第二面，光開關電連接電路板；其中光開關包含光發射器及光接收器，光發射器對光接收器發射光訊號。鍵帽位於第一面上方，且該鍵帽於該電路板投影形成一鍵帽投影區。支撐機構支撐鍵帽相對於電路板上下移動。彈性件橫向地連接支撐機構，並且將鍵帽投影區分隔為第一區及第二區。背光光源電連接電路板。擋片受鍵帽或支撐機構帶動而上下移動，以於該鍵帽被按壓時觸發光開關。其中，光開關與背光光源位於第一面與第二面中的不同面，且光開關與背光光源位於第一區與第二區中的不同區。In another embodiment, the present invention provides an optical switch key, including a switch module, a key cap, a support mechanism, an elastic member, a backlight source, and a blocking plate. The switch module has a circuit board and an optical switch, the circuit board has a first surface and a second surface, and the optical switch is electrically connected to the circuit board; wherein the optical switch includes an optical transmitter and an optical receiver, and the optical transmitter transmits an optical signal to the optical receiver . The key cap is located above the first surface, and the key cap is projected on the circuit board to form a key cap projection area. The support mechanism supports the keycap to move up and down relative to the circuit board. The elastic member connects the supporting mechanism laterally, and divides the projection area of the key cap into a first area and a second area. The backlight light source is electrically connected to the circuit board. Driven by the keycap or the supporting mechanism, the blocking piece moves up and down, so as to trigger the optical switch when the keycap is pressed. Wherein, the optical switch and the backlight source are located on different surfaces of the first surface and the second surface, and the optical switch and the backlight source are located in different areas of the first area and the second area.

於至少一實施例中，支撐機構具有一第一支架及一第二支架，該第一支架與該第二支架可活動地連接於該電路板與該鍵帽之間。In at least one embodiment, the support mechanism has a first bracket and a second bracket, and the first bracket and the second bracket are movably connected between the circuit board and the keycap.

於至少一實施例中，第一支架與該第二支架分別包含一支架本體與至少一側臂部，該至少一側臂部延伸自該支架本體，該擋片設置於該至少一側臂部或該支架本體。In at least one embodiment, the first bracket and the second bracket respectively include a bracket body and at least one side arm, the at least one side arm extends from the bracket body, and the blocking plate is disposed on the at least one side arm or the bracket body.

於至少一實施例中，該擋片設置於該支撐機構之一第一支架及一第二支架其中之一，且該電路板具有一切槽、而該光開關位於該第二面，該擋片可穿過該切槽而遮擋該光訊號。In at least one embodiment, the baffle is arranged on one of the first bracket and the second bracket of the support mechanism, and the circuit board has a cutout, and the optical switch is located on the second surface, the baffle The light signal can be blocked through the slot.

於至少一實施例中，該光訊號沿一光路發射，該光路垂直於或平行於該彈性件。In at least one embodiment, the optical signal is emitted along an optical path, and the optical path is perpendicular to or parallel to the elastic member.

於至少一實施例中，該擋片平行或垂直於該彈性件。In at least one embodiment, the blocking piece is parallel to or perpendicular to the elastic member.

於至少一實施例中，該支撐機構更包含一底板，結合於該電路板之該第一面；其中，該底板具有對應於該第一區的一透光孔區域及對應於該第二區的一破孔區域，該背光光源對應於該透光孔區域，且該光開關之光路至少局部地暴露在該破孔區域。In at least one embodiment, the support mechanism further includes a bottom plate combined with the first surface of the circuit board; wherein, the bottom plate has a light hole area corresponding to the first area and a light hole area corresponding to the second area A hole area, the backlight source corresponds to the light hole area, and the optical path of the optical switch is at least partially exposed in the hole area.

於至少一實施例中，該鍵帽具有一擋片，該電路板具有一切槽，該擋片穿過該切槽而遮擋該光訊號。In at least one embodiment, the keycap has a block, the circuit board has a slot, and the block passes through the slot to block the optical signal.

於至少一實施例中，該背光光源向下發出光線，該電路板上設置至少一開孔供該光線通過而朝向該鍵帽照射。In at least one embodiment, the backlight emits light downwards, and at least one opening is set on the circuit board for the light to pass through and irradiate toward the keycap.

於至少一實施例中，光開關按鍵，更包含一反射片，對應於該背光光源設置，用以朝向該至少一開孔反射該光線。In at least one embodiment, the optical switch button further includes a reflective sheet disposed corresponding to the backlight light source for reflecting the light toward the at least one opening.

相較於習知技術，本發明之光開關按鍵利用光發射器及光接收器作為觸發開關，透過按鍵中任一合宜部件隨著按壓行程改變光訊號的接收狀態而達到快速、精確的按壓訊號的轉換，且可應用於各種按鍵架構以適用於可攜式電子裝置。再者，本發明的背光光源、光發射器與光接收器設置在電路板的不同側，並且也位於彈性件的不同側。電路板、彈性件對背光光源發出的照明光線產生遮擋作用，有效避免照明光線對光接收器產生干擾。Compared with the conventional technology, the optical switch key of the present invention uses the light emitter and the light receiver as the trigger switch, and achieves a fast and accurate pressing signal by changing the receiving state of the light signal through any suitable part of the key along with the pressing stroke conversion, and can be applied to various key structures to be suitable for portable electronic devices. Furthermore, the backlight light source, the light emitter and the light receiver of the present invention are disposed on different sides of the circuit board, and are also located on different sides of the elastic member. The circuit board and the elastic member have a shielding effect on the illumination light emitted by the backlight light source, effectively preventing the illumination light from interfering with the light receiver.

本發明提供一種光開關按鍵1，其可應用於任何按壓式輸入裝置(例如鍵盤)，或整合於任何合宜的電子裝置(例如可攜式電子裝置的按鍵或筆記型電腦的鍵盤)，以提供快速又精確的觸發功能、並適用於多種按鍵結構設計，且增進維修可行性。於後參考圖式，詳細說明本發明實施例之光開關按鍵1各元件之結構及操作。The present invention provides an optical switch button 1, which can be applied to any push-type input device (such as a keyboard), or integrated into any suitable electronic device (such as a button of a portable electronic device or a keyboard of a notebook computer), to provide Fast and precise trigger function, suitable for various key structure designs, and improves maintenance feasibility. The structure and operation of each component of the optical switch button 1 according to the embodiment of the present invention will be described in detail below with reference to the drawings.

如圖1、圖2以及圖3所示，為本發明第一實施例所揭露的光開關按鍵1，包含開關模組607、鍵帽604、支撐機構、彈性件605以及背光光源643。As shown in FIG. 1 , FIG. 2 and FIG. 3 , the optical switch key 1 disclosed in the first embodiment of the present invention includes a switch module 607 , a keycap 604 , a support mechanism, an elastic member 605 and a backlight source 643 .

如圖1、圖2以及圖3所示，開關模組607具有電路板644、光發射器641及光接收器642，光發射器641及光接收器642分別電連接電路板644、並組成一光開關。本發明不同實施例之開關模組607至少包括電路板644與電連接於電路板644的光開關，然本發明之光開關並不以光發射器641及光接收器642為限，整合一體的光收發器也可透過折射或反射的光路實現光開關功能。電路板644具有第一面644a以及第二面644b，且光發射器641及光接收器642電連接於電路板644。光發射器641對應地對光接收器642發射光訊號，使光接收器642接收光訊號而得到一強度。當鍵帽604未被按壓時，光接收器642接收光訊號的強度為第一強度；當鍵帽被按壓604時，鍵帽604帶動支撐機構移動，鍵帽604或支撐機構遮擋光訊號，使得光接收器642接收到的光訊號強度降低為第二強度。按壓鍵帽604改變光接收器642接收光訊號的強度，而使開關模組607被觸發產生觸發訊號。As shown in Figure 1, Figure 2 and Figure 3, the switch module 607 has a circuit board 644, an optical transmitter 641 and an optical receiver 642, the optical transmitter 641 and the optical receiver 642 are respectively electrically connected to the circuit board 644, and form a light switch. The switch module 607 of different embodiments of the present invention at least includes a circuit board 644 and an optical switch electrically connected to the circuit board 644, but the optical switch of the present invention is not limited to the optical transmitter 641 and the optical receiver 642, and is integrated The optical transceiver can also realize the optical switch function through the optical path of refraction or reflection. The circuit board 644 has a first surface 644 a and a second surface 644 b, and the light transmitter 641 and the light receiver 642 are electrically connected to the circuit board 644 . The light transmitter 641 correspondingly transmits a light signal to the light receiver 642, so that the light receiver 642 receives the light signal and obtains an intensity. When the keycap 604 is not pressed, the intensity of the light signal received by the light receiver 642 is the first intensity; when the keycap 604 is pressed, the keycap 604 drives the support mechanism to move, and the keycap 604 or the support mechanism blocks the light signal, so that The intensity of the optical signal received by the optical receiver 642 is reduced to the second intensity. Pressing the keycap 604 changes the strength of the light signal received by the light receiver 642, so that the switch module 607 is triggered to generate a trigger signal.

如圖1、圖2以及圖3所示，鍵帽604透過支撐機構的支撐而位於第一面644a上方，鍵帽604上具有出光區604b。出光區604b可以是鍵帽604的鏤空區域，並且鏤空區域中可填充或不填充透光材料。或，鍵帽604由透光材料製作，並塗佈不透光的塗料，並且保留出光區604b不進行塗佈。圖中所示的出光區604b雖為塊狀區域，但實際上可以是呈現字符型態的可透光區域，以呈現鍵帽604對應的字符。鍵帽604於電路板644投影形成鍵帽投影區604a(涵蓋第一面644a與第二面644b)。支撐機構設置於鍵帽604下方並支撐鍵帽604相對於電路板644上/下移動。支撐機構具有第一支架601及第二支架602。如果不設置整片底板603，連接件631、632可直接固定在電路板644，那麼第一支架601與第二支架602的底板端6012及6022可活動地連接於電路板644上的連接件631、632，且第一支架601與第二支架602的鍵帽端6014及6024可活動地連接於鍵帽604。As shown in FIG. 1 , FIG. 2 and FIG. 3 , the keycap 604 is positioned above the first surface 644 a through the support of the supporting mechanism, and the keycap 604 has a light emitting area 604 b. The light emitting area 604b may be a hollow area of the keycap 604, and the hollow area may or may not be filled with light-transmitting material. Alternatively, the keycap 604 is made of a light-transmitting material, coated with an opaque paint, and the light-emitting region 604b is left uncoated. Although the light emitting area 604b shown in the figure is a block-shaped area, it can actually be a light-transmitting area in the form of a character, so as to present the character corresponding to the keycap 604 . The keycap 604 is projected on the circuit board 644 to form a keycap projection area 604 a (covering the first surface 644 a and the second surface 644 b ). The support mechanism is disposed under the keycap 604 and supports the keycap 604 to move up/down relative to the circuit board 644 . The support mechanism has a first bracket 601 and a second bracket 602 . If the entire bottom plate 603 is not provided, the connectors 631, 632 can be fixed directly on the circuit board 644, and the bottom plate ends 6012 and 6022 of the first bracket 601 and the second bracket 602 can be movably connected to the connector 631 on the circuit board 644. , 632 , and the keycap ends 6014 and 6024 of the first bracket 601 and the second bracket 602 are movably connected to the keycap 604 .

如圖1、圖2以及圖3所示，具體而言，鍵帽604可為例如射出成型的矩形鍵帽604，且鍵帽604下表面具有耦接支撐機構的耦接件6042、6044。耦接件6042可為具有軸孔的耦接結構，而耦接件6044可為具有滑槽的耦接結構；或是耦接件6042、6044都是具有滑槽的耦接結構。第一支架601與第二支架602的鍵帽端6014及6024分別可轉動地連接鍵帽604的耦接件6042、6044，並且至少一鍵帽端6014及6024可相對於對應的耦接件6042、6044滑動，使得第一支架601與第二支架602的另一端可活動地連接於鍵帽604。As shown in FIG. 1 , FIG. 2 and FIG. 3 , specifically, the keycap 604 can be, for example, an injection-molded rectangular keycap 604 , and the lower surface of the keycap 604 has coupling pieces 6042 and 6044 coupled to the supporting mechanism. The coupling part 6042 can be a coupling structure with a shaft hole, and the coupling part 6044 can be a coupling structure with a sliding slot; or both the coupling parts 6042 and 6044 have a coupling structure with a sliding slot. The keycap ends 6014 and 6024 of the first bracket 601 and the second bracket 602 are rotatably connected to the coupling parts 6042 and 6044 of the keycap 604 respectively, and at least one keycap end 6014 and 6024 can be relative to the corresponding coupling part 6042 , 6044 slide, so that the other ends of the first bracket 601 and the second bracket 602 are movably connected to the keycap 604 .

如圖1以及圖2所示，支撐機構更包含底板603，底板603具有連接件631、632。底板603結合於電路板644的第一面644a，並且連接件631、632朝向遠離電路板644的方向突出。連接件631、632較佳為自底板603表面朝鍵帽604突起的卡勾式連接件。第一支架601與第二支架602的底板端6012及6014分別可活動地連接底板603的連接件631、632，使得第一支架601與第二支架602的底板端6012及6022間接地連接於電路板644。本發明中不排除省略底板603，而以底板端6012、6022直接地樞接於電路板644。此外，第一支架601與第二支架602也可以交叉配置並且互相樞接，而配置為剪刀結構的形態。As shown in FIG. 1 and FIG. 2 , the support mechanism further includes a bottom plate 603 , and the bottom plate 603 has connectors 631 , 632 . The bottom plate 603 is combined with the first surface 644 a of the circuit board 644 , and the connecting members 631 , 632 protrude toward a direction away from the circuit board 644 . The connecting pieces 631 and 632 are preferably hook-type connecting pieces protruding from the surface of the bottom plate 603 toward the keycap 604 . The bottom plate ends 6012 and 6014 of the first bracket 601 and the second bracket 602 are respectively movably connected to the connectors 631 and 632 of the bottom plate 603, so that the bottom plate ends 6012 and 6022 of the first bracket 601 and the second bracket 602 are indirectly connected to the circuit Board 644. The present invention does not exclude the omission of the bottom plate 603 , and the bottom plate ends 6012 , 6022 are directly pivoted to the circuit board 644 . In addition, the first bracket 601 and the second bracket 602 may also be arranged crosswise and pivotally connected to each other, so as to be configured in the form of a scissors structure.

如圖1、圖2以及圖4所示，彈性件605橫向地沿一連接方向連接支撐機構，並且彈性件605之正投影將鍵帽投影區604a分隔為第一區604a1及第二區604a2。在至少一實施例中，彈性件605是拉伸彈簧，沿連接方向X連接第一支架601及第二支架602。第一支架601與第二支架602分別包含支架本體613、623與側臂部611、612、621、622。在第一支架601或第二支架602中，側臂部611、612延伸於支架本體613，並且可活動地連接於電路板644。支架本體613、623垂直於彈性件605的連接方向X，並且彈性件605連接於二支架本體613、623，而常態地對二支架本體613、623提供拉力使二支架本體613、623互相接近，形成向上推動鍵帽604的恢復力。As shown in FIG. 1 , FIG. 2 and FIG. 4 , the elastic member 605 connects the support mechanism laterally along a connection direction, and the orthographic projection of the elastic member 605 divides the keycap projection area 604a into a first area 604a1 and a second area 604a2 . In at least one embodiment, the elastic member 605 is a tension spring, and connects the first bracket 601 and the second bracket 602 along the connection direction X. The first bracket 601 and the second bracket 602 respectively include bracket bodies 613 , 623 and side arms 611 , 612 , 621 , 622 . In the first bracket 601 or the second bracket 602 , the side arms 611 , 612 extend from the bracket body 613 and are movably connected to the circuit board 644 . The support bodies 613, 623 are perpendicular to the connection direction X of the elastic member 605, and the elastic member 605 is connected to the two support bodies 613, 623, and normally provides tension to the two support bodies 613, 623 so that the two support bodies 613, 623 are close to each other. A restoring force that pushes the keycap 604 upward is formed.

如圖1與圖4所示，背光光源643電連接電路板644，用於朝向鍵帽604投射照明光線。光開關與背光光源643位於第一面644a與644b第二面中的不同，同時光開關與背光光源643位於第一區604a1與第二區604a2中的不同區。具體而言於本實施例中，背光光源643位於第一區604a1，以照明鍵帽604的出光區604b。光發射器641及光接收器642位於第二區604a2，並隨鍵帽604或支撐機構移動而觸發開關模組607。由於第一區604a1與第二區604a2大致上是被彈性件605分隔，彈性件605的阻隔與反射可以降低照明光線在第二區604a2的強度，因此可以降低照明光線對光接收器642的干擾。前述異面設置與異區設置也使照明光線需要較長距離才到達光開關，或經鍵帽604、彈性件605、底板603與電路板644的多次反射或遮擋，耗損照明光線的強度，減少背光光源643對光開關的干擾，提供光開關觸發的準確性。As shown in FIG. 1 and FIG. 4 , the backlight light source 643 is electrically connected to the circuit board 644 for projecting illumination light toward the keycap 604 . The optical switch and the backlight source 643 are located differently in the first surface 644a and the second surface 644b, and the optical switch and the backlight source 643 are located in different areas in the first area 604a1 and the second area 604a2. Specifically, in this embodiment, the backlight light source 643 is located in the first area 604a1 to illuminate the light emitting area 604b of the keycap 604 . The light emitter 641 and the light receiver 642 are located in the second area 604a2 and trigger the switch module 607 when the keycap 604 or the support mechanism moves. Since the first area 604a1 and the second area 604a2 are roughly separated by the elastic member 605, the blocking and reflection of the elastic member 605 can reduce the intensity of the illuminating light in the second area 604a2, thus reducing the interference of the illuminating light on the light receiver 642 . The above-mentioned different-surface and different-region settings also make the illumination light need a long distance to reach the optical switch, or the multiple reflections or occlusions of the keycap 604, the elastic member 605, the bottom plate 603, and the circuit board 644 consume the intensity of the illumination light. The interference of the backlight light source 643 to the optical switch is reduced, and the triggering accuracy of the optical switch is improved.

參閱圖1至圖4所示，第一支架601及第二支架602其中之一具有擋片650，擋片650朝向電路板644延伸。電路板644具有切槽645，且光發射器641及光接收器642分別設置於切槽645的兩側。如圖所示，擋片650設置於支架本體613、623其中之一，並且擋片650平行於切槽645，藉以移動穿過切槽645。本發明中擋片650不一定在向下移動時穿過切槽645而遮斷光開關之光路；相反地，有可能在鍵帽604按壓時，擋片650位置是從遮斷光訊號及光路、移至允許光訊號及光路導通，例如將擋片650設置在第一支架601或第二支架602的底板端6012及6022附近(不論在第一支架601及第二支架602採正V或倒V設置時)。本發明中擋片650不一定在移動全程都對合於切槽645；當擋片650移動軌跡非垂直於切槽645時(例如弧線軌跡)，擋片650可能移動至最高或最低點才對合並穿過切槽645。Referring to FIGS. 1 to 4 , one of the first bracket 601 and the second bracket 602 has a blocking piece 650 extending toward the circuit board 644 . The circuit board 644 has a slot 645 , and the light transmitter 641 and the light receiver 642 are respectively disposed on two sides of the slot 645 . As shown in the figure, the blocking piece 650 is disposed on one of the bracket bodies 613 , 623 , and the blocking piece 650 is parallel to the slot 645 so as to move through the slot 645 . In the present invention, the baffle 650 does not necessarily pass through the cutout 645 to block the light path of the optical switch when moving downward; on the contrary, when the keycap 604 is pressed, the baffle 650 is in a position to block the optical signal and the light path. , move to allow optical signal and optical path conduction, for example, set the baffle 650 near the bottom plate ends 6012 and 6022 of the first bracket 601 or the second bracket 602 (whether the first bracket 601 and the second bracket 602 adopt positive V or inverted V setting). In the present invention, the stopper 650 does not necessarily coincide with the notch 645 during the whole movement; when the movement track of the stopper 650 is not perpendicular to the notch 645 (such as an arc track), the stopper 650 may move to the highest or lowest point. Merged through slot 645 .

參閱圖5以及圖6，圖中第一支架601與第二支架602省略以簡化視圖。當鍵帽604被按壓，第一支架601及第二支架602（圖中未示出）擺動，而帶動擋片650穿過切槽645而遮擋光訊號，降低光接收器642接收光訊號的強度，使開關模組607被觸發而產生觸發訊號。具體而言，在第一實施例中，光訊號沿光路發射，光路垂直於彈性件605的連接方向X；同時，切槽645與擋片650都是平行於連接方向X。Referring to FIG. 5 and FIG. 6 , the first bracket 601 and the second bracket 602 are omitted to simplify the view. When the keycap 604 is pressed, the first bracket 601 and the second bracket 602 (not shown in the figure) swing, and drive the blocking piece 650 to pass through the slot 645 to block the light signal and reduce the intensity of the light signal received by the light receiver 642 , so that the switch module 607 is triggered to generate a trigger signal. Specifically, in the first embodiment, the optical signal is emitted along the optical path, and the optical path is perpendicular to the connection direction X of the elastic member 605 ; meanwhile, the slot 645 and the blocking piece 650 are both parallel to the connection direction X.

如圖1、圖4、圖5與圖6所示，在第一實施例中，背光光源643設置於第一面644a，且光發射器641及光接收器642(整組光開關)位於第二面644b，藉以進一步透過電路板644阻隔背光光源643的照明光線，降低照明光線對光接收器642的干擾。此外，由於底板603結合於第一面644a，為了避免底板603干涉光發射器641、光接收器642與背光光源643，底板603具有透光孔區域603a及破孔區域603b，透光孔區域603a及破孔區域603b分別對應於第一區604a1與第二區604a2，且透光孔區域603a與第一區604a1至少部分地重疊，而破孔區域603b與第二區604a2至少部分地重疊。光開關(光發射器641及光接收器642)之光路，至少局部地暴露在底板604的破孔區域603b和電路板644的切槽64。如圖所示，透光孔區域603a及破孔區域603b可以開設成大孔洞，使得其在電路板644的投影面積大於背光光源643與切槽645，確保背光光源643與切槽645分別落在透光孔區域603a及破孔區域603b之中。於不同實施例中，透光孔區域603a及破孔區域603b也可以完全匹配或略大於背光光源643與切槽645之外廓，使得其在電路板644的投影大於且重合於背光光源643與切槽645的投影。透光孔區域603a及破孔區域603b也可以合併為單一大孔洞區域，同時容納背光光源643與切槽64。背光光源643位於透光孔區域603a，且光發射器641與光接收器642位於破孔區域603b。因此，背光光源643、光發射器641及光接收器642的設置，或者是光線的發射接收就不會受到底板603干涉。本發明各實施例之底板603與電路板644都可以具有遮蔽背光光源643之光線的效果；雖然一般而言光源643產生可見光，而光開關(光發射器641與光接收器642)採用紅外光，但是光接收器642的接收頻譜可能涵蓋局部的可見光，因此有必要將光源643與整組光開關設置在電路板644的不同面、或鍵盤投影區的不同區，以便降低光源643或環境光源對光開關的干擾。As shown in Figure 1, Figure 4, Figure 5 and Figure 6, in the first embodiment, the backlight light source 643 is arranged on the first surface 644a, and the light emitter 641 and the light receiver 642 (the whole group of light switches) are located on the first surface 644a. The two sides 644b are used to further block the illuminating light of the backlight light source 643 through the circuit board 644 and reduce the interference of the illuminating light on the light receiver 642 . In addition, since the base plate 603 is combined with the first surface 644a, in order to prevent the base plate 603 from interfering with the light emitter 641, the light receiver 642, and the backlight source 643, the base plate 603 has a light hole area 603a and a hole area 603b. The light hole area 603a and the perforated area 603b respectively correspond to the first area 604a1 and the second area 604a2, and the transparent hole area 603a at least partially overlaps the first area 604a1, and the perforated area 603b at least partially overlaps the second area 604a2. The optical path of the optical switch (optical transmitter 641 and optical receiver 642 ) is at least partially exposed in the perforated area 603 b of the bottom plate 604 and the cutout 64 of the circuit board 644 . As shown in the figure, the light transmission hole area 603a and the hole area 603b can be opened as large holes, so that the projected area on the circuit board 644 is larger than the backlight light source 643 and the cutout 645, ensuring that the backlight light source 643 and the cutout 645 respectively fall on the In the transparent hole area 603a and the hole area 603b. In different embodiments, the light transmission hole area 603a and the hole area 603b can also completely match or be slightly larger than the outline of the backlight light source 643 and the cutout 645, so that their projections on the circuit board 644 are larger than and coincident with the backlight light source 643 and the outline of the cutout 645. Projection of cut groove 645 . The transparent hole area 603 a and the hole area 603 b can also be combined into a single large hole area to accommodate the backlight source 643 and the cutout 64 at the same time. The backlight source 643 is located in the light hole area 603a, and the light emitter 641 and the light receiver 642 are located in the hole area 603b. Therefore, the arrangement of the backlight light source 643 , the light emitter 641 and the light receiver 642 , or the emission and reception of light will not be interfered by the bottom plate 603 . Both the bottom plate 603 and the circuit board 644 of the various embodiments of the present invention can have the effect of shielding the light of the backlight light source 643; although generally speaking, the light source 643 produces visible light, and the optical switch (light transmitter 641 and light receiver 642) uses infrared light , but the receiving spectrum of the light receiver 642 may cover local visible light, so it is necessary to arrange the light source 643 and the entire group of optical switches on different sides of the circuit board 644 or in different areas of the keyboard projection area, so as to reduce the intensity of the light source 643 or ambient light source Interference with optical switches.

參閱圖5、圖6以及圖7所示，為了進一步降低照明光線對光接收器642的干擾，同時加強背光光源643對鍵帽604的照明效果，光開關按鍵1還包含擴散片661。擴散片661結合於底板603且設置於第一區604a1。擴散片661覆蓋背光光源643，並且位於背光光源643與鍵帽604之間。背光光源643發出的照明光線，可通過擴散片661而被大範圍地照射於鍵帽604的內側面。此外，用於設置擴散片661的側牆661a可以採用遮光材料製作，提供遮光效果，減少水平方向出光，進而避免照明光線干擾光接收器642接收光訊號。Referring to FIG. 5 , FIG. 6 and FIG. 7 , in order to further reduce the interference of the illuminating light on the light receiver 642 and enhance the illumination effect of the backlight light source 643 on the keycap 604 , the optical switch key 1 further includes a diffuser 661 . The diffuser 661 is combined with the bottom plate 603 and disposed in the first region 604a1. The diffusion sheet 661 covers the backlight source 643 and is located between the backlight source 643 and the keycap 604 . The illuminating light emitted by the backlight light source 643 can be widely irradiated on the inner surface of the keycap 604 through the diffuser 661 . In addition, the side wall 661 a for the diffusion sheet 661 can be made of light-shielding material to provide a light-shielding effect and reduce light emitted in the horizontal direction, so as to prevent the illuminating light from interfering with the optical signal received by the light receiver 642 .

參閱圖8與圖9所示，為本發明第二實施例所揭露的開關模組607，用於置換本發明一或多個實施例中的開關模組607。開關模組607包含電路板644、光發射器641與光接收器642。Referring to FIG. 8 and FIG. 9 , the switch module 607 disclosed in the second embodiment of the present invention is used to replace the switch module 607 in one or more embodiments of the present invention. The switch module 607 includes a circuit board 644 , an optical transmitter 641 and an optical receiver 642 .

如圖8與圖9所示，開關模組607還包含反射片660與間隔件662。背光光源643設置於第二面644b。電路板644上設置開孔646，鄰近背光光源643，並且開孔646重疊於底板603的透光孔區域603a。間隔件662設置於第二面644b，並且反射片660結合於間隔件662，使得反射片660對應於第二面644b設置，並且重疊於開孔646。反射片660與第二面644b之間保持間隔距離，背光光源643位於反射片660與第二面644b之間。反射片660的反射面朝向第二面644b，並且背光光源643朝向遠離第二面644b的方向，亦即朝向反射片660投射照明光線(向下照射)。因此，反射片660朝向開孔646反射照明光線，使照明光線通過開孔646照射於鍵帽604。在此實施例中，光發射器641與光接收器642設置在第一面644a，且仍位於切槽645的兩側。切槽645的配置可以避免底板603干涉擋片650，使得擋片650有足夠的移動行程可以遮斷光訊號的光路。由於光發射器641與光接收器642設置在第一面644a，因此可以有效降低背光光源643對光接收器642的干擾。此外，設置於第二面644b的背光光源643，可以通過開孔646大小來來調整對鍵帽604的照明強度，以避免照明強度過大。As shown in FIG. 8 and FIG. 9 , the switch module 607 further includes a reflector 660 and a spacer 662 . The backlight light source 643 is disposed on the second surface 644b. An opening 646 is disposed on the circuit board 644 adjacent to the backlight source 643 , and the opening 646 overlaps the light-transmitting hole area 603 a of the bottom plate 603 . The spacer 662 is disposed on the second surface 644 b , and the reflective sheet 660 is combined with the spacer 662 , so that the reflective sheet 660 is disposed corresponding to the second surface 644 b and overlaps the opening 646 . There is a distance between the reflection sheet 660 and the second surface 644b, and the backlight source 643 is located between the reflection sheet 660 and the second surface 644b. The reflective surface of the reflective sheet 660 faces the second surface 644b, and the backlight light source 643 projects toward the direction away from the second surface 644b, that is, toward the reflective sheet 660 (downward illumination). Therefore, the reflective sheet 660 reflects the illuminating light toward the opening 646 , so that the illuminating light passes through the opening 646 and irradiates the keycap 604 . In this embodiment, the light emitter 641 and the light receiver 642 are disposed on the first surface 644 a and still located on two sides of the cutout 645 . The configuration of the cutout 645 can prevent the bottom plate 603 from interfering with the blocking plate 650, so that the blocking plate 650 has enough travel distance to block the light path of the optical signal. Since the light emitter 641 and the light receiver 642 are disposed on the first surface 644a, the interference of the backlight light source 643 to the light receiver 642 can be effectively reduced. In addition, the backlight light source 643 disposed on the second surface 644 b can adjust the illumination intensity of the keycap 604 through the size of the opening 646 to avoid excessive illumination intensity.

參閱圖10以及圖11所示，是本發明第三實施例所揭露的一種光開關按鍵1。光開關按鍵1包含開關模組607、鍵帽604、支撐機構、彈性件605以及背光光源643。Referring to FIG. 10 and FIG. 11 , it is an optical switch button 1 disclosed in the third embodiment of the present invention. The optical switch key 1 includes a switch module 607 , a keycap 604 , a support mechanism, an elastic member 605 and a backlight source 643 .

在第三實施例中，擋片650設置於第一支架601與第二支架602其中之一的側臂部611，且擋片650朝向電路板644延伸。如圖10與圖11所示，擋片650與切槽645平行於彈性件605的連接方向X，且光訊號的光路仍垂直於連接方向X配置。當鍵帽604被按壓，側臂部611、612、621、622向下擺動而帶動擋片650移動穿過切槽645並遮擋於光發射器641與光接收器642之間，擋片650至少局部地遮擋光訊號，以降低光接收器642接收光訊號的強度，從而觸發開關模組607產生觸發訊號。In the third embodiment, the blocking piece 650 is disposed on the side arm portion 611 of one of the first bracket 601 and the second bracket 602 , and the blocking piece 650 extends toward the circuit board 644 . As shown in FIG. 10 and FIG. 11 , the blocking piece 650 and the slot 645 are parallel to the connection direction X of the elastic member 605 , and the optical path of the optical signal is still perpendicular to the connection direction X. When the keycap 604 is pressed, the side arms 611, 612, 621, 622 swing downwards to drive the blocking plate 650 to move through the slot 645 and block between the light emitter 641 and the light receiver 642. The blocking plate 650 is at least Partially block the light signal to reduce the intensity of the light signal received by the light receiver 642, so as to trigger the switch module 607 to generate a trigger signal.

參閱圖12以及圖13所示，是本發明第四實施例所揭露的一種光開關按鍵1。光開關按鍵1包含開關模組607、鍵帽604、支撐機構、彈性件605以及背光光源643。Referring to FIG. 12 and FIG. 13 , it is an optical switch key 1 disclosed in the fourth embodiment of the present invention. The optical switch key 1 includes a switch module 607 , a keycap 604 , a support mechanism, an elastic member 605 and a backlight source 643 .

在第四實施例中，擋片650設置於第一支架601與第二支架602其中之一的支架本體623，且擋片650朝向電路板644延伸。如圖12與圖13所示，擋片650與切槽645垂直於彈性件605的連接方向X，且光訊號的光路平行於連接方向X配置。當鍵帽604被按壓，側臂部611、612、621、622向下擺動而帶動擋片650移動穿過切槽645並遮擋於光發射器641與光接收器642之間，擋片650至少局部地遮擋光訊號，以降低光接收器642接收光訊號的強度，從而觸發開關模組607產生觸發訊號。In the fourth embodiment, the blocking piece 650 is disposed on the bracket body 623 of one of the first bracket 601 and the second bracket 602 , and the blocking piece 650 extends toward the circuit board 644 . As shown in FIG. 12 and FIG. 13 , the blocking piece 650 and the slot 645 are perpendicular to the connection direction X of the elastic member 605 , and the optical path of the optical signal is arranged parallel to the connection direction X. When the keycap 604 is pressed, the side arms 611, 612, 621, 622 swing downwards to drive the blocking plate 650 to move through the slot 645 and block between the light emitter 641 and the light receiver 642. The blocking plate 650 is at least Partially block the light signal to reduce the intensity of the light signal received by the light receiver 642, so as to trigger the switch module 607 to generate a trigger signal.

參閱圖14以及圖15所示，是本發明第五實施例所揭露的一種光開關按鍵1。光開關按鍵1包含開關模組607、鍵帽604、支撐機構（圖未示）、彈性件605以及背光光源643。Referring to FIG. 14 and FIG. 15 , it is an optical switch key 1 disclosed in the fifth embodiment of the present invention. The optical switch key 1 includes a switch module 607 , a keycap 604 , a support mechanism (not shown), an elastic member 605 and a backlight source 643 .

如圖14以及圖15所示，在第五實施例中，支撐機構的第一支架601與第二支架602（圖未示）不配置擋片650。擋片650配置於鍵帽604的底部並朝向電路板644延伸。當鍵帽604被按壓，鍵帽604帶動擋片650直線移動，擋片650移動穿過切槽645並遮擋於光發射器641與光接收器642之間，擋片650至少局部地遮擋光訊號，以降低光接收器642接收光訊號的強度，從而觸發開關模組607產生觸發訊號。在第六實施例中，由鍵帽604帶動的擋片650是直線移動，因而擋片650與切槽645之間的對位相對容易解決。於圖式中，擋片650是平行於彈性件605的連接方向X，而光訊號的光路垂直於連接方向X；但不排除擋片650是垂直於彈性件605的連接方向X，而光訊號的光路垂平行於連接方向X。As shown in FIG. 14 and FIG. 15 , in the fifth embodiment, the first bracket 601 and the second bracket 602 (not shown in the figure) of the support mechanism are not provided with a blocking piece 650 . The blocking piece 650 is disposed on the bottom of the keycap 604 and extends toward the circuit board 644 . When the keycap 604 is pressed, the keycap 604 drives the block 650 to move linearly, the block 650 moves through the slot 645 and blocks between the light emitter 641 and the light receiver 642, the block 650 at least partially blocks the optical signal , so as to reduce the strength of the light signal received by the light receiver 642, so as to trigger the switch module 607 to generate a trigger signal. In the sixth embodiment, the blocking piece 650 driven by the keycap 604 moves linearly, so the alignment between the blocking piece 650 and the slot 645 is relatively easy to solve. In the figure, the baffle 650 is parallel to the connection direction X of the elastic member 605, and the light path of the optical signal is perpendicular to the connection direction X; but it is not excluded that the baffle 650 is perpendicular to the connection direction X of the elastic member 605, and the optical signal The optical path of is perpendicular to the connection direction X.

相較於習知技術，本發明之光開關按鍵1利用光發射器641及光接收器642作為開關訊號，透過按鍵中任一合宜部件隨著按壓行程改變光訊號的接收狀態而達到快速、精確的按壓訊號的轉換，且可應用於各種按鍵架構以適用於可攜式電子裝置。再者，本發明的背光光源643、光發射器641與光接收器642設置在電路板644的不同側，並且也位於彈性件605的不同側。電路板644、彈性件605對背光光源643發出的照明光線產生遮擋作用，有效避免照明光線對光接收器642產生干擾。Compared with the conventional technology, the optical switch key 1 of the present invention uses the light transmitter 641 and the light receiver 642 as the switch signal, and achieves fast and accurate by changing the receiving state of the light signal through any suitable part in the key along with the pressing stroke. The conversion of the pressing signal can be applied to various key structures to be suitable for portable electronic devices. Furthermore, the backlight light source 643 , the light emitter 641 and the light receiver 642 of the present invention are disposed on different sides of the circuit board 644 and also on different sides of the elastic member 605 . The circuit board 644 and the elastic member 605 can block the illumination light emitted by the backlight light source 643 , effectively preventing the illumination light from interfering with the light receiver 642 .

本發明已由上述實施例加以描述，然而上述實施例僅為例示目的而非用於限制。熟此技藝者當知在不悖離本發明精神下，於此特別說明的實施例可有例示實施例的其他修改。因此，本發明範疇亦涵蓋此類修改且僅由所附申請專利範圍限制。The present invention has been described by the above embodiments, however, the above embodiments are only for the purpose of illustration and not for limitation. Those skilled in the art will appreciate that other modifications of the illustrated embodiments can be made to the embodiments specifically described herein without departing from the spirit of the invention. Accordingly, the scope of the present invention also covers such modifications and is limited only by the appended claims.

1:光開關按鍵 601:第一支架 6012、6022:底板端 6014、6024:鍵帽端 613、623:支架本體 611、612、621、622:側臂部 602:第二支架 604:鍵帽 6042、6044:耦接件 603:底板 603a:透光孔區域 603b:破孔區域604鍵帽 604a:鍵帽投影區 604a1:第一區 604a2:第二區 604b:出光區 605:彈性件 607:開關模組 631、632:連接件 641:光發射器 642:光接收器 643:背光光源 644:電路板 644a:第一面 644b:第二面 645:切槽 646:開孔 650:擋片 660:反射片 661:擴散片 661a:側牆 662:間隔件 X:連接方向 1: Optical switch button 601: The first bracket 6012, 6022: bottom plate end 6014, 6024: key cap end 613, 623: bracket body 611, 612, 621, 622: side arm 602: second bracket 604: keycap 6042, 6044: Couplings 603: Bottom plate 603a: light hole area 603b: 604 keycaps in the hole area 604a: Keycap projection area 604a1: District 1 604a2: Second District 604b: light exit area 605: Elastic parts 607: switch module 631, 632: connectors 641: Optical Transmitter 642:Optical receiver 643: Backlight light source 644: circuit board 644a: first side 644b: Second side 645: Grooving 646: opening 650: block 660: reflector 661: Diffuser 661a: side wall 662:Spacer X: connection direction

圖1是本發明第一實施例之光開關按鍵的分解圖。圖2是本發明第一實施例之光開關按鍵的側視圖。圖3是本發明第一實施例中，鍵帽、支撐機構以及彈性件的分解圖。圖4是本發明實施例中，鍵帽投影區的俯視圖。圖5及圖6是本發明第一實施例之光開關按鍵的剖視圖。圖7是本發明第一實施例之光開關按鍵的俯視圖，圖中省略鍵帽。圖8是本發明第二實施例之部分元件分解圖。圖9是本發明第二實施例之光開關按鍵的剖視圖。圖10是本發明第三實施例之光開關按鍵的分解圖。圖11是本發明第三實施例之光開關按鍵的俯視圖，圖中省略鍵帽。圖12是本發明第四實施例之光開關按鍵的分解圖。圖13是本發明第四實施例之光開關按鍵的俯視圖，圖中省略鍵帽。圖14及圖15是本發明第五實施例之光開關按鍵的剖視圖。 FIG. 1 is an exploded view of an optical switch key according to the first embodiment of the present invention. Fig. 2 is a side view of the optical switch key according to the first embodiment of the present invention. Fig. 3 is an exploded view of a keycap, a supporting mechanism and an elastic member in the first embodiment of the present invention. Fig. 4 is a top view of the projection area of the keycap in the embodiment of the present invention. 5 and 6 are cross-sectional views of the optical switch key according to the first embodiment of the present invention. Fig. 7 is a top view of the optical switch key according to the first embodiment of the present invention, and the key cap is omitted in the figure. FIG. 8 is an exploded view of some components of the second embodiment of the present invention. 9 is a cross-sectional view of an optical switch key according to a second embodiment of the present invention. Fig. 10 is an exploded view of the optical switch key according to the third embodiment of the present invention. Fig. 11 is a top view of the optical switch key according to the third embodiment of the present invention, and the key cap is omitted in the figure. Fig. 12 is an exploded view of an optical switch key according to a fourth embodiment of the present invention. Fig. 13 is a top view of the optical switch key according to the fourth embodiment of the present invention, and the key cap is omitted in the figure. 14 and 15 are cross-sectional views of an optical switch key according to a fifth embodiment of the present invention.

無none

1:光開關按鍵 1: Optical switch button

601:第一支架 601: The first bracket

6012、6022:底板端 6012, 6022: bottom plate end

6014、6024:鍵帽端 6014, 6024: key cap end

613、623:支架本體 613, 623: bracket body

611、612、621、622:側臂部 611, 612, 621, 622: side arm

602:第二支架 602: second bracket

603:底板 603: Bottom plate

603a:透光孔區域 603a: light hole area

603b:破孔區域 603b: Perforated area

604:鍵帽 604: keycap

604a:鍵帽投影區 604a: Keycap projection area

604b:出光區 604b: light exit area

605:彈性件 605: Elastic parts

607:開關模組 607: switch module

631、632:連接件 631, 632: connectors

641:光發射器 641: Optical Transmitter

642:光接收器 642:Optical receiver

643:背光光源 643: Backlight light source

644:電路板 644: circuit board

644a:第一面 644a: first side

644b:第二面 644b: Second side

645:切槽 645: Grooving

650:擋片 650: block

Claims

一種光開關按鍵，包含：一開關模組，具有一電路板、一光發射器及一光接收器，該電路板具有一第一面以及一第二面，該光發射器與該光接收器電連接該電路板；其中該光發射器對該光接收器發射一光訊號；一鍵帽，位於該第一面上方，該鍵帽具有一出光區，且該鍵帽於該電路板投影形成一鍵帽投影區；一支撐機構，設置於該鍵帽下方並支撐該鍵帽相對於該電路板上下移動；一彈性件，橫向地連接該支撐機構，並且將該鍵帽投影區分隔為一第一區及一第二區；一擋片，受該鍵帽或該支撐機構帶動而上下移動；以及一背光光源，電連接該電路板；其中，該背光光源位於該第一區以照明該鍵帽之該出光區，而該光發射器及該光接收器則位於該第二區，該擋片隨該鍵帽或該支撐機構移動而觸發該開關模組。 An optical switch button, comprising: A switch module has a circuit board, an optical transmitter and an optical receiver, the circuit board has a first surface and a second surface, the optical transmitter and the optical receiver are electrically connected to the circuit board; wherein the optical transmitter transmits an optical signal to the optical receiver; a key cap, located above the first surface, the key cap has a light emitting area, and the key cap is projected on the circuit board to form a key cap projection area; A support mechanism is arranged under the keycap and supports the keycap to move up and down relative to the circuit board; An elastic member connects the support mechanism laterally and divides the keycap projection area into a first area and a second area; a blocking piece, driven by the keycap or the supporting mechanism to move up and down; and a backlight source electrically connected to the circuit board; Wherein, the backlight light source is located in the first area to illuminate the light emitting area of the keycap, while the light emitter and the light receiver are located in the second area, and the blocking plate moves with the keycap or the supporting mechanism. Trigger the switch module.

如請求項1所述的光開關按鍵，其中，該背光光源設置於該第一面，且該光發射器及該光接收器位於該第二面。The optical switch key according to claim 1, wherein the backlight source is disposed on the first surface, and the light emitter and the light receiver are located on the second surface.

如請求項2所述的光開關按鍵，其中，該電路板具有一切槽，該擋片穿過該切槽而遮斷該光發射器及該光接收器間之一光路。The optical switch key according to claim 2, wherein the circuit board has a cutout, and the blocking piece passes through the cutout to block an optical path between the light emitter and the light receiver.

一種光開關按鍵，包含：一開關模組，具有一電路板與一光開關，該電路板具有一第一面以及一第二面，該光開關電連接該電路板；其中該光開關包含一光發射器及一光接收器，該光發射器對該光接收器發射一光訊號；一鍵帽，位於該第一面上方，且該鍵帽於該電路板投影形成一鍵帽投影區；一支撐機構，支撐該鍵帽相對於該電路板上下移動；一彈性件，橫向地連接該支撐機構，並且將該鍵帽投影區分隔為一第一區及一第二區；一背光光源，電連接該電路板；以及一擋片，受該鍵帽或該支撐機構帶動而上下移動，以於該鍵帽被按壓時觸發該光開關；其中，該光開關與該背光光源位於該第一面與該第二面中的不同面，且該光開關與該背光光源位於該鍵帽投影區的不同區。 An optical switch button, comprising: A switch module has a circuit board and an optical switch, the circuit board has a first surface and a second surface, the optical switch is electrically connected to the circuit board; wherein the optical switch includes an optical transmitter and an optical receiver device, the optical transmitter emits an optical signal to the optical receiver; A keycap is located above the first surface, and the keycap is projected on the circuit board to form a keycap projection area; a supporting mechanism, supporting the keycap to move up and down relative to the circuit board; An elastic member connects the support mechanism laterally and divides the keycap projection area into a first area and a second area; a backlight source electrically connected to the circuit board; and a blocking piece, driven by the keycap or the supporting mechanism to move up and down, so as to trigger the optical switch when the keycap is pressed; Wherein, the optical switch and the backlight light source are located on different surfaces of the first surface and the second surface, and the optical switch and the backlight light source are located in different areas of the keycap projection area.

如請求項1或請求項4所述的光開關按鍵，其中，該支撐機構具有一第一支架及一第二支架，該第一支架與該第二支架可活動地連接於該電路板與該鍵帽之間。The optical switch key according to claim 1 or claim 4, wherein the support mechanism has a first bracket and a second bracket, and the first bracket and the second bracket are movably connected to the circuit board and the between the keycaps.

如請求項5所述的光開關按鍵，其中，該第一支架與該第二支架分別包含一支架本體與至少一側臂部，該至少一側臂部延伸自該支架本體，該擋片設置於該至少一側臂部或該支架本體。The optical switch key according to claim 5, wherein, the first bracket and the second bracket respectively include a bracket body and at least one side arm, and the at least one side arm extends from the bracket body, and the shutter is set on the at least one side arm or the bracket body.

如請求項4所述的光開關按鍵，其中，該擋片設置於該支撐機構之一第一支架及一第二支架其中之一，且該電路板具有一切槽、而該光開關位於該第二面，該擋片可穿過該切槽而遮擋該光訊號。The optical switch button as described in claim 4, wherein, the shutter is arranged on one of the first bracket and the second bracket of the support mechanism, and the circuit board has a cutout, and the optical switch is located on the second bracket. On the other hand, the baffle can pass through the slot to block the light signal.

如請求項4所述的光開關按鍵，其中，該光訊號沿一光路發射，該光路垂直於或平行於該彈性件。The optical switch key according to claim 4, wherein the optical signal is emitted along an optical path, and the optical path is perpendicular to or parallel to the elastic member.

如請求項4所述的光開關按鍵，其中，該擋片平行或垂直於該彈性件。The optical switch button as claimed in item 4, wherein, the blocking piece is parallel to or perpendicular to the elastic member.

如請求項1或請求項4所述的光開關按鍵，其中，該支撐機構更包含一底板，結合於該電路板之該第一面；其中，該底板具有對應於該第一區的一透光孔區域及對應於該第二區的一破孔區域，該背光光源對應於該透光孔區域，且該光開關之光路至少局部地暴露在該破孔區域。The optical switch button as described in claim 1 or claim 4, wherein the supporting mechanism further includes a bottom plate combined with the first surface of the circuit board; wherein the bottom plate has a transparent hole corresponding to the first area The light hole area and a hole area corresponding to the second area, the backlight source corresponds to the light hole area, and the optical path of the optical switch is at least partially exposed in the hole area.

如請求項1或請求項4所述的光開關按鍵，其中，該擋片配置於該鍵帽，該電路板具有一切槽，該擋片穿過該切槽而遮擋該光訊號。The optical switch key according to claim 1 or claim 4, wherein the blocking piece is disposed on the keycap, the circuit board has a slot, and the blocking piece passes through the slot to block the optical signal.

如請求項1或請求項4所述的光開關按鍵，其中，該背光光源向下發出光線，該電路板上設置至少一開孔供該光線通過而朝向該鍵帽照射。The optical switch key according to claim 1 or claim 4, wherein the backlight emits light downwards, and at least one opening is provided on the circuit board for the light to pass through and illuminate toward the keycap.

如請求項12所述的光開關按鍵，更包含一反射片，對應於該背光光源設置，用以朝向該至少一開孔反射該光線。The optical switch key according to claim 12 further includes a reflective sheet disposed corresponding to the backlight light source for reflecting the light toward the at least one opening.