TW201816819A

TW201816819A - Luminous keyboard

Info

Publication number: TW201816819A
Application number: TW105135069A
Authority: TW
Inventors: 顏銘甫; 蔡鎮宇
Original assignee: 光寶電子（廣州）有限公司; 光寶科技股份有限公司
Priority date: 2016-10-28
Filing date: 2016-10-28
Publication date: 2018-05-01
Also published as: TWI604486B

Abstract

A luminous keyboard includes a key module, a membrane circuit board module, a base plate and a light guide plate. The key module is disposed on the membrane circuit board module. The membrane circuit board module is disposed on the base plate. The base plate is disposed on the light guide plate. The base plate and the light guide plate together form an aperture structure. The membrane circuit board module includes a membrane circuit board and a light unit. The membrane circuit board has a protrusion portion protruding there-from toward the aperture structure. The light unit is disposed at the lower surface of the protrusion portion, such that the light unit protrudes downwardly beyond the lower surface of the base plate and light beams emitted from the light unit can be projected into the light guide plate without hindrance.

Description

發光鍵盤 Illuminated keyboard

本發明有關於一種發光鍵盤，尤指一種厚度與成本降低且具有較佳光線使用效率的發光鍵盤。 The invention relates to an illuminated keyboard, in particular to an illuminated keyboard with reduced thickness and cost and better light use efficiency.

就目前個人電腦而言，鍵盤為不可或缺的輸入設備之一，用以輸入文字、符號或數字。使用者在選擇鍵盤時，鍵盤除了應具備基本輸入功能外，鍵盤的視覺效果亦受到使用者的重視。舉例而言，市場上已有發光鍵盤，除了視覺上對使用者產生吸引力外，於夜間或燈光不足的地方亦可被使用。 For the current personal computer, the keyboard is one of the indispensable input devices for entering text, symbols or numbers. When the user selects the keyboard, the keyboard should have the basic input function, and the visual effect of the keyboard is also valued by the user. For example, there are already illuminated keyboards on the market that can be used at night or in low-light areas, in addition to being visually appealing to the user.

現有的發光鍵盤利用在鍵盤下方設置有背光模組，使光線可自鍵盤透出，以達到發光效果。一般來說，背光模組皆是透過軟性電路板(Flexible Printed Circuit,FPC)黏著LED並貼附在導光板或反射板上，然而也因此增加了FPC的厚度與成本。 The existing illuminated keyboard uses a backlight module disposed under the keyboard, so that light can be transmitted from the keyboard to achieve a luminous effect. In general, the backlight module is adhered to the light guide plate or the reflective plate through a Flexible Printed Circuit (FPC), but the thickness and cost of the FPC are also increased.

因此，如何使發光鍵盤輕薄化、成本降低，且同時提高光線使用效率，來改善上述缺失，為業界努力的目標。有鑑於此，本發明人本於多年從事相關產品之開發與設計，有感上述缺失之可改善，乃特潛心研究並配合學理之運用，終於提出一種設計合理且有效改善上述缺失之本發明。 Therefore, how to make the illuminating keyboard thin and light, reduce the cost, and at the same time improve the light use efficiency, to improve the above-mentioned shortcomings, is the goal of the industry. In view of this, the present inventors have been engaged in the development and design of related products for many years, and have been able to improve the above-mentioned defects. With great interest in research and cooperation with the use of academics, the present invention finally proposes a present invention which is reasonable in design and effective in improving the above-mentioned defects.

為了達到上面所描述的，本發明提供了一種發光鍵盤，其包括一按鍵總成、一薄膜開關電路板總成、一底板及一導光板；所述按鍵總成設置於所述薄膜開關電路板之上，所述薄膜開關電路板總成設置於所述底板之上，所述底板設置於所述導光板之上；其中，所述底板與所述導光板共同形成至少有一貫通所述底板及所述導光板的開孔結構；所述薄膜開關電路板總成包含有一薄膜開關電路板及至少有一設置於所述薄膜開關電路板的發光單元，所述薄膜開關電路板朝向所述開孔結構內形成有一外凸部，所述發光單元設置於所述外凸部下表面並使所述發光單元向下突出於所述底板下表面，從而使所述發光單元所產生的光線能無阻礙地射入所述導光板。 In order to achieve the above, the present invention provides an illuminated keyboard, comprising a button assembly, a membrane switch circuit board assembly, a bottom plate and a light guide plate; the button assembly is disposed on the membrane switch circuit board The film switch circuit board assembly is disposed on the bottom plate, and the bottom plate is disposed on the light guide plate; wherein the bottom plate and the light guide plate together form at least one through the bottom plate and The membrane switch circuit board assembly includes a membrane switch circuit board and at least one light emitting unit disposed on the membrane switch circuit board, the membrane switch circuit board facing the opening structure Forming an outer convex portion, the light emitting unit is disposed on the lower surface of the outer convex portion, and the light emitting unit protrudes downwardly from the lower surface of the bottom plate, so that the light generated by the light emitting unit can be shot without hindrance Into the light guide plate.

本發明至少具有下列的優點：本發明係透過底板與導光板共同形成有一開孔結構，且薄膜開關電路板朝向開孔結構內形成有一外凸部，以及發光單元設置於外凸部下表面並使發光單元向下突出於底板下表面的整體設計，可免去現有技術的軟性電路板黏著發光單元所產生的厚度及成本，並且使發光單元所產生的光線不會因為底板高度而被遮蔽，從而使發光單元所產生的光線能無阻礙地射入所述導光板，有效提高光線使用效率。 The present invention has at least the following advantages: the present invention forms an opening structure through the bottom plate and the light guide plate, and the membrane switch circuit board is formed with an outer convex portion toward the opening structure, and the light emitting unit is disposed on the lower surface of the outer convex portion and The overall design of the light-emitting unit protruding downward from the lower surface of the bottom plate can eliminate the thickness and cost generated by the prior art flexible circuit board adhered to the light-emitting unit, and the light generated by the light-emitting unit is not blocked by the height of the bottom plate, thereby The light generated by the light-emitting unit can be incident on the light guide plate without hindrance, thereby effectively improving the light use efficiency.

為使能更進一步瞭解本發明之特徵及技術內容，請參閱以下有關本發明之詳細說明與附圖，然而所附圖式僅提供參考與說明用，並非用來對本發明加以限制者。 For a better understanding of the features and technical aspects of the present invention, reference should be made to the accompanying drawings.

1‧‧‧按鍵總成 1‧‧‧ button assembly

11‧‧‧鍵帽 11‧‧‧Key Cap

12‧‧‧支撐元件 12‧‧‧Support components

13‧‧‧彈性體 13‧‧‧ Elastomers

2‧‧‧薄膜開關電路板總成 2‧‧‧ Membrane switch circuit board assembly

21‧‧‧薄膜開關電路板 21‧‧‧ Membrane Switch Board

211‧‧‧外凸部 211‧‧‧Outer convex

2111‧‧‧下表面 2111‧‧‧ lower surface

22‧‧‧發光單元 22‧‧‧Lighting unit

3‧‧‧底板 3‧‧‧floor

31‧‧‧下表面 31‧‧‧ lower surface

4‧‧‧導光板 4‧‧‧Light guide plate

5‧‧‧反射板 5‧‧‧reflector

G‧‧‧開孔結構 G‧‧‧opening structure

G1‧‧‧第一階級 G1‧‧‧First class

G2‧‧‧第二階級 G2‧‧‧second class

H1,H2‧‧‧高度 H1, H2‧‧‧ height

圖1為本發明發光鍵盤的剖視示意圖。 1 is a schematic cross-sectional view of an illuminated keyboard of the present invention.

圖2為圖1中A區域的放大圖。 Fig. 2 is an enlarged view of a region A in Fig. 1.

圖3為圖2的局部分解示意圖。 Figure 3 is a partial exploded view of Figure 2.

以下所描述之實施例有提及數量或其類似者，除非另作說明，否則本發明的應用範疇應不受其數量或其類似者之限制。此處揭露的特定細節不應當被解釋為限制，而是僅應當作申請專利範圍的基礎，以及當作一代表性基礎來教示習於此藝者使其等得以事實上任何適當的方式各式各樣地利用本發明，包括利用此處揭露的各種特徵與此處可能未明白揭露者的組合。另外，本發明提及的方向用語，例如：左、右、上或下等，僅是參考附加圖式的方向，是用來說明而並非用來限制本發明。 The embodiments described below are referred to by the number or the like, and the scope of application of the invention should not be limited by the number or the like unless otherwise stated. The specific details disclosed herein are not to be construed as limiting, but only as a basis for the scope of the claims, and as a representative basis. The invention is utilized in a variety of ways, including the use of various features disclosed herein and combinations of those not disclosed herein. In addition, the directional terms used in the present invention, such as left, right, up, or down, are merely referring to the orientation of the additional drawings, and are intended to be illustrative and not limiting.

請參閱圖1至圖3，本發明提供一種發光鍵盤。如圖1所示，發光鍵盤1主要包括有一按鍵總成1、一薄膜開關電路板總成2、一底板3及一導光板4。 Referring to Figures 1 to 3, the present invention provides an illuminated keyboard. As shown in FIG. 1 , the illuminated keyboard 1 mainly includes a button assembly 1 , a membrane switch circuit board assembly 2 , a bottom plate 3 , and a light guide plate 4 .

按鍵總成1設置於薄膜開關電路板總成2之上，薄膜開關電路板總成2設置於底板3之上，底板3設置於導光板4之上，使得按鍵總成1、薄膜開關電路板總成2及底板3依序疊設於導光板4上。 The button assembly 1 is disposed on the membrane switch circuit board assembly 2, the membrane switch circuit board assembly 2 is disposed on the bottom plate 3, and the bottom plate 3 is disposed on the light guide plate 4, so that the button assembly 1 and the membrane switch circuit board The assembly 2 and the bottom plate 3 are sequentially stacked on the light guide plate 4.

按鍵總成1包含有數個鍵帽11及數個支撐元件12，該些支撐元件12設置於底板3與該些鍵帽11之間，以支撐該些鍵帽11且讓該些鍵帽11可相對於底板3上下移動，並使該些鍵帽11保持平衡。鍵帽11為整體皆可透光，或是部分區域可透光，可以依據實際需求加以設計。另外，按鍵總成1還可包含有數個彈性體13，該些彈性體13設置於該些鍵帽11與薄膜開關電路板總成2之間，以藉由彈性體4觸壓薄膜開關電路板總成2而產生一驅動訊號。支撐元件12可以是剪刀腳元件(scissor-mechanism)，彈性體13可以是橡膠彈性體(Rubber Dome)，但不以此為限。所屬技術領域具有通常知識者可自由設計按鍵總成1，本實施例不限制按鍵總成1的型態。 The button assembly 1 includes a plurality of key caps 11 and a plurality of support members 12, and the support members 12 are disposed between the bottom plate 3 and the keycaps 11 to support the keycaps 11 and allow the keycaps 11 to be Moving up and down with respect to the bottom plate 3, and keeping the keycaps 11 balanced. The key cap 11 can be transparent to the whole or can be transparent in some areas, and can be designed according to actual needs. In addition, the button assembly 1 can also include a plurality of elastic bodies 13 disposed between the keycaps 11 and the membrane switch circuit board assembly 2 to contact the membrane switch circuit board by the elastic body 4. Assembly 2 produces a drive signal. The support member 12 may be a scissor-mechanism, and the elastic body 13 may be a rubber dome, but not limited thereto. The button assembly 1 can be freely designed by those skilled in the art, and the embodiment does not limit the type of the button assembly 1.

底板3由金屬板所製成，亦可使用其他合適材質。底板3疊設於導光板4上並與導光板4共同形成至少有一貫通底板3及導光板4的開孔結構G，而開孔結構G可呈階級孔狀。在本實施例中，貫通底板3及導光板4的開孔結構G位於任兩個鍵帽11之間。在其它實施例中，貫通底板3及導光板4的開孔結構G也可以位於各個鍵帽11下方。另外需說明的是，在實際應用中，底板3對應於各鍵帽11的位置還可以具有數個底板穿孔(圖未示)，導光板4對應於各底板穿孔的位置可以具有相關的導光結構，例如是導光油墨(圖未示)、齒狀微結構(圖未示)等，用以導引光線由底板穿孔透出，藉以照亮各個鍵帽11，而底板穿孔的位置、大小及數量，所屬技術領域具有通常知識者可依據實際需求加以設計，本實施例並不加以限制。 The bottom plate 3 is made of a metal plate, and other suitable materials can also be used. The bottom plate 3 is stacked on the light guide plate 4 and forms at least one opening structure G penetrating through the bottom plate 3 and the light guide plate 4, and the opening structure G can be in the shape of a class hole. In the present embodiment, the opening structure G penetrating through the bottom plate 3 and the light guide plate 4 is located between any two of the keycaps 11. In other embodiments, the opening structure G penetrating the bottom plate 3 and the light guide plate 4 may also be located below each of the key caps 11. It should be noted that, in practical applications, the bottom plate 3 may have a plurality of bottom plate perforations corresponding to the positions of the key caps 11 (not shown), and the position of the light guide plate 4 corresponding to the perforations of the bottom plates may have relevant light guides. The structure is, for example, a light guiding ink (not shown), a toothed microstructure (not shown), etc., for guiding light to be perforated through the bottom plate, thereby illuminating the respective keycaps 11, and the position and size of the bottom plate perforations. And the number of those skilled in the art can be designed according to actual needs, and the embodiment is not limited.

薄膜開關電路板總成2包含有一薄膜開關電路板21及至少有一設置於薄膜開關電路板21的發光單元22。薄膜開關電路板21朝向開孔結構G內形成有一外凸部211。詳細來說，外凸部211於開孔結構G內的高度H1大於或等於底板3的高度H2，以使外凸部211下表面2111突出於或齊平於底板3下表面31。發光單元22，例如為LED，設置於外凸部211下表面2111，使發光單元22會向下突出於底板3下表面31，從而使發光單元22所產生的光線不會被金屬製的底板3所遮蔽到，能無阻礙地射入導光板4，以有效提高光線使用效率。 The membrane switch circuit board assembly 2 includes a membrane switch circuit board 21 and at least one light emitting unit 22 disposed on the membrane switch circuit board 21. The membrane switch circuit board 21 is formed with an outer convex portion 211 toward the opening structure G. In detail, the height H1 of the outer convex portion 211 in the opening structure G is greater than or equal to the height H2 of the bottom plate 3 such that the lower surface 2111 of the outer convex portion 211 protrudes or is flush with the lower surface 31 of the bottom plate 3. The light emitting unit 22, for example, an LED, is disposed on the lower surface 2111 of the outer convex portion 211, so that the light emitting unit 22 protrudes downwardly from the lower surface 31 of the bottom plate 3, so that the light generated by the light emitting unit 22 is not blocked by the metal bottom plate 3. It can be shielded and can be incident on the light guide plate 4 without hindrance, so as to effectively improve the light use efficiency.

詳細來說，可以利用打凸成形或熱塑成形等方式，使薄膜開關電路板21產生形狀變形，以形成上述外凸部211。並且，外凸部211突出於薄膜開關電路板21的一側面，而薄膜開關電路板21相對的另一側面則呈凹陷狀，使薄膜開關電路板21的截面高度皆保持一致。 In detail, the film switch circuit board 21 may be deformed in shape by a convex forming or a thermoplastic forming to form the outer convex portion 211. Moreover, the convex portion 211 protrudes from one side of the membrane switch circuit board 21, and the other side of the membrane switch circuit board 21 is recessed, so that the cross-sectional height of the membrane switch circuit board 21 is kept uniform.

更詳細來說，如圖3所示，開孔結構G呈階級孔狀，且呈階級孔狀的開孔結構G具有不同大小孔徑的第一、二階級G1、G2，第一階級G1的階級面由底板3的內周面形成，第二階級G2的階級面由導光板4的內周面形成。並且，外凸部211下表面2111的寬度大於發光單元22的寬度，且外凸部211下表面2111的寬度及發光單元22的寬度分別小於開孔結構G於第一、第二階級G1、G2的孔徑。 More specifically, as shown in FIG. 3, the opening structure G is in the shape of a class hole, and the opening structure G of the class hole shape has the first and second classes G1 and G2 of different size apertures, and the class of the first class G1. The surface is formed by the inner circumferential surface of the bottom plate 3, and the level surface of the second level G2 is formed by the inner circumferential surface of the light guide plate 4. Moreover, the width of the lower surface 2111 of the outer convex portion 211 is larger than the width of the light emitting unit 22, and the width of the lower surface 2111 of the outer convex portion 211 and the width of the light emitting unit 22 are smaller than the opening structure G, respectively, in the first and second stages G1, G2. The aperture.

另外，在本實施例的發光鍵盤還包括有一反射板5，反射板5設置於導光板5之下且遮蔽開孔結構G，且反射板5塗佈有反射材質，例如反光油墨(圖未示)，透過進一步設置有反射板5，以增進光反射效果。 In addition, the illuminating keyboard of the embodiment further includes a reflecting plate 5 disposed under the light guiding plate 5 and shielding the opening structure G, and the reflecting plate 5 is coated with a reflective material, such as reflective ink (not shown) ), the reflector 5 is further provided to enhance the light reflection effect.

綜合以上所述，本發明的發光鍵盤係透過底板3疊設於導光板4上並與導光板4共同形成有一開孔結構G，且薄膜開關電路板21疊設於底板3上並朝向開孔結構G內形成有一外凸部211，以及發光單元22設置於外凸部211下表面2111並使發光單元22向下突出於底板3下表面31的整體設計，可免去現有技術的軟性電路板(FPC)黏著LED所產生的FPC厚度及成本，並且使發光單元22所產生的光線不會因為底板3高度而被遮蔽，從而使發光單元22所產生的光線能無阻礙地射入導光板4，俾確實能有效提高光線使用效率。 In summary, the illuminating keyboard of the present invention is stacked on the light guide plate 4 through the bottom plate 3 and formed with an opening structure G together with the light guide plate 4, and the membrane switch circuit board 21 is stacked on the bottom plate 3 and facing the opening. An outer convex portion 211 is formed in the structure G, and the overall design of the light emitting unit 22 disposed on the lower surface 2111 of the outer convex portion 211 and the light emitting unit 22 protruding downwardly from the lower surface 31 of the bottom plate 3 can eliminate the prior art flexible circuit board. (FPC) adheres to the thickness and cost of the FPC generated by the LED, and causes the light generated by the light-emitting unit 22 not to be shielded by the height of the bottom plate 3, so that the light generated by the light-emitting unit 22 can be incident on the light guide plate 4 without hindrance. , 俾 can effectively improve the efficiency of light use.

以上所述僅為本發明之較佳實施例，非意欲侷限本發明的專利保護範圍，故舉凡運用本發明說明書及圖式內容所為的等效變化，均同理皆包含於本發明的權利保護範圍內，合予陳明。 The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Therefore, the equivalent changes of the present invention and the contents of the drawings are all included in the protection of the present invention. Within the scope, it is combined with Chen Ming.

Claims

一種發光鍵盤，其包括：一按鍵總成、一薄膜開關電路板總成、一底板及一導光板；所述按鍵總成設置於所述薄膜開關電路板之上，所述薄膜開關電路板總成設置於所述底板之上，所述底板設置於所述導光板之上；其中，所述底板與所述導光板共同形成至少有一貫通所述底板及所述導光板的開孔結構；所述薄膜開關電路板總成包含有一薄膜開關電路板及至少有一設置於所述薄膜開關電路板的發光單元，所述薄膜開關電路板朝向所述開孔結構內形成有一外凸部，所述發光單元設置於所述外凸部下表面並使所述發光單元向下突出於所述底板下表面，從而使所述發光單元所產生的光線能無阻礙地射入所述導光板。 An illuminated keyboard, comprising: a button assembly, a membrane switch circuit board assembly, a bottom plate and a light guide plate; the button assembly is disposed on the membrane switch circuit board, the membrane switch circuit board total The bottom plate is disposed on the bottom plate, and the bottom plate is disposed on the light guide plate; wherein the bottom plate and the light guide plate together form at least one opening structure extending through the bottom plate and the light guide plate; The membrane switch circuit board assembly includes a membrane switch circuit board and at least one light emitting unit disposed on the membrane switch circuit board, the membrane switch circuit board forming an outer convex portion toward the opening structure, the light emitting The unit is disposed on the lower surface of the outer convex portion and protrudes the light emitting unit downwardly from the lower surface of the bottom plate, so that the light generated by the light emitting unit can be incident into the light guide plate without hindrance.

如請求項1所述之發光鍵盤，其中所述外凸部於所述開孔結構內的高度大於或等於所述底板的高度，以使所述外凸部下表面向下突出於或齊平於所述底板下表面。 The illuminating keyboard of claim 1, wherein a height of the outer convex portion in the opening structure is greater than or equal to a height of the bottom plate such that a lower surface of the outer convex portion protrudes downward or is flush with The lower surface of the bottom plate.

如請求項1所述之發光鍵盤，其中所述按鍵總成包含有數個鍵帽及數個支撐元件，所述數個支撐元件設置於所述底板與所述數個鍵帽之間，以支撐所述數個鍵帽。 The illuminated keyboard of claim 1, wherein the button assembly comprises a plurality of key caps and a plurality of support members, the plurality of support members being disposed between the bottom plate and the plurality of key caps for supporting The plurality of key caps.

如請求項3所述之發光鍵盤，其中所述開孔結構位於任兩個所述鍵帽之間。 The illuminated keyboard of claim 3, wherein the aperture structure is between any two of the keycaps.

如請求項3所述之發光鍵盤，其中所述開孔結構位於任一個所述鍵帽下方。 The illuminated keyboard of claim 3, wherein the aperture structure is located below any of the keycaps.

如請求項1所述之發光鍵盤，其中所述外凸部突出於所述薄膜開關電路板的一側面，所述薄膜開關電路板相對的另一側面呈凹陷狀，使所述薄膜開關電路板的截面高度保持一致。 The illuminating keyboard of claim 1, wherein the protruding portion protrudes from a side of the membrane switch circuit board, and the opposite side of the membrane switch circuit board has a concave shape, so that the membrane switch circuit board The height of the section is consistent.

如請求項1所述之發光鍵盤，更包括有一反射板，所述反射板設置於所述導光板之下且遮蔽所述開孔結構。 The illuminating keyboard of claim 1, further comprising a reflecting plate disposed under the light guiding plate and shielding the opening structure.

如請求項1所述之發光鍵盤，其中所述開孔結構呈階級孔狀且呈階級孔狀的所述開孔結構具有不同大小孔徑的第一、二階級，所述第一階級的階級面由所述底板的內周面形成，所述第二階級的階級面由所述導光板的內周面形成。 The illuminating keyboard according to claim 1, wherein the opening structure having the opening structure and the class hole shape has the first and second classes of different size apertures, and the class of the first class Formed by an inner peripheral surface of the bottom plate, the class surface of the second stage is formed by an inner peripheral surface of the light guide plate.

如請求項8所述之發光鍵盤，其中所述外凸部下表面的寬度大於所述發光單元的寬度，且所述外凸部下表面的寬度及所述發光單元的寬度分別小於所述開孔結構於所述第一、第二階級的孔徑。 The illuminating keyboard of claim 8, wherein a width of a lower surface of the outer convex portion is greater than a width of the light emitting unit, and a width of a lower surface of the outer convex portion and a width of the light emitting unit are respectively smaller than the opening structure The apertures of the first and second stages.