CN206921733U - Have water-proof function can adjustment formula keyboard - Google Patents

Abstract

The utility model be to provide it is a kind of have water-proof function can adjustment formula keyboard,Two side surfaces up and down of the wherein flexible circuit board are respectively equipped with multiple light-emitting components and a PWM control chip of control circuit,And it is electrically connected with by PWM control chip and light-emitting component,And control circuit controls the brightness of pulse-width modulation signal percentage control light-emitting component according to PWM control chip,And flexible circuit board upper surface is combined with a printing opacity secluding film,And flexible circuit board lower surface is provided with the bottom plate of Key element,And the keycap of Key element is arranged on the bottom plate by connecting element,It can be respectively coated by be positioned at outside light-emitting component by integrally formed convex closure on printing opacity secluding film and form a sealing state,And with the external world aqueous vapor or fluid isolation,Short circuit or damage are produced to avoid enter into interiors of products,Thus the effect of waterproof can be strengthened,And PWM control chip is inserted into the holes of bottom plate,The height of occupancy, which can be saved, makes entirety more be thinned.

Description

Have water-proof function can adjustment formula keyboard

Technical field

The utility model be to provide it is a kind of have water-proof function can adjustment formula keyboard, espespecially flexible circuit board upper surface for knot Conjunction has the printing opacity secluding film that cladding is positioned at outside light-emitting component, to strengthen the effect of waterproof, and by flexible circuit board lower surface PWM control chip be inserted into Key element in the holes of bottom plate, can save the height of occupancy make it is overall more slim Change.

Background technology

The fast development of electronics technology and information industry now, make various electronic products all towards light, thin, short, small and work( The powerful trend development of energy, such as computer, notebook computer, action Internet device (MID), intelligent mobile phone, tablet PC Deng, it has also become modern's electronic product indispensable in daily life or work, and it is big between user and electronic product It is to be linked up using input equipments such as mouse, keyboards mostly, wherein the most conveniently making word, numeral or the input of instruction again with keyboard Operation, and lift the function of practicality.

Furthermore for the symbol that in the environment of insufficient light human eye can be clearly seen that on each button, just there is industry Person imports light guide plate and light source technology in keyboard, and develops the illuminated keyboard of tool backlight module, produced by making backlight module Light can project backlight effect is formed at the back side of each keycap, allow user to see the character symbols on keycap, Operated with facilitating, and illuminated keyboard on the market includes backlight module and key-press module at present, wherein the backlight module For with a light guide plate, and light source is provided with light guide plate side, and the light emitting diode of light source is projects towards light guide plate Light makes light guide plate uniformly light, but light guide plate lower surface be provided with light emitted by light guide plate lower surface can be reflected back leaded light Reflecting piece on plate, and the anti-dazzling screen corresponded at key-press module is provided with light guide plate upper surface, light guide plate can be guided and penetrated The light gone out reenters to be incident upon and forms backlight corresponding to key-press module on keycap through behind the transmittance section of anti-dazzling screen.

Because illuminated keyboard uses so far good decades, make the technology of illuminated keyboard very ripe, and sending out In the case that light keyboard structure simplifies very much, a brand-new structure is only developed, and with the lifting of technology And produce with ultra fine-line, more slimming and the light-weighted circuit board of material, otherwise illumination keyboard structure is made Very huge change is highly difficult, so when general configuration can not change, typically in illuminated keyboard thin portion structure Make to change, to reduce overall gross thickness really, can more meet the design requirement that illuminated keyboard Related product is light, thin, short, small, and Assembling procedure and element manufacturing cost, which also need to add, to be considered, begins to meet the actual utilization of illuminated keyboard.

Only current keyboard Designing will more and more be intended to be thinned under limited space, keyboard space is also tended to Narrow, the gross thickness of such a backlight module adds luminescence unit and the stack thickness of reflecting piece for light guide plate, causes integral thickness It more efficient will can not be reduced by being limited on this body structure, therefore just there is dealer to develop multiple LED grains profit Be produced on the mode of typography on conductive layer surface, and it is cured after it is electrically connected on conductive layer to form one luminous Main structure layer, and luminescent layer is arranged between the bottom plate of key-press module and keycap, such a layer structure design can omit leaded light Plate and reflecting piece stack thickness, make gross thickness is relative to reduce, be also not required to open up many in reflecting piece and be available for light emitting diode to stretch Enter and towards the through hole of light guide plate throw light, overall structure can be simplified and reduce the cost of manufacture, but in the mistake actually manufactured Cheng Zhong, because the density of multiple LED grains distribution is difficult to control, light caused by multiple LED grains energizations is caused to be projected to key Brightness on cap can not be consistent and uneven, and can produce luminous point flicker or starry sky phenomenon occurred, and then have influence on hair The overall visual effect of light keyboard.

In addition, in order to avoid the slight void because of beverage, water, dust or dirt etc. between each button enters to keyboard There may be short circuit, damage or disabler when inside, electronic component, the circuit for causing to lay on film circuit board etc. operates Deng, usually it is provided with multiple pod apertures on the substrate of keyboard bottom, and in being coated with a waterproof in thin film circuit plate surface Glue-line, you can prevent the liquid such as beverage, water or aqueous vapor from invading keyboard by Waterproof glue line or touch film circuit board, and It is expelled to by pod apertures outside keyboard, to ensure the function of spill resistant, only the Waterproof glue line, will be because of liquid under permanent use The erosion of body or the reason of colloid material ageing, are still unable to reach comprehensive waterproof effect, cause beverage, water or aqueous vapor etc. Liquid can still invade keyboard, and cause electronic component on its film circuit board, thin film switch, circuit etc. produce short circuit or Damage, as needs to be engaged in the key point that this journey dealer desires most ardently redesign.

Utility model content

Therefore new creator in view of it is above-mentioned existing the problem of and shortcoming, be collect related data via multi-party assessment And consider, and constantly study and change using the experience of research and development for many years for engaging in the industry, begin have such a tool water-proof function Can the new birth of adjustment formula keyboard.

Main purpose of the present utility model is in that two side surfaces up and down of flexible circuit board are respectively equipped with multiple luminous members One PWM control chip of part and control circuit, and be electrically connected with by PWM control chip and the light-emitting component, And the control circuit can control pulse-width modulation signal percentage to control the light-emitting component respectively according to PWM control chip Brightness, and flexible circuit board upper surface is combined with a printing opacity secluding film, and flexible circuit board lower surface is provided with button member The bottom plate of part, and the keycap of Key element is arranged on the bottom plate by connecting element, can pass through one on printing opacity secluding film The convex closure of shaping, which is respectively coated by be positioned at outside light-emitting component, forms a sealing state, and with the aqueous vapor or fluid isolation in the external world, Short circuit or damage are produced to avoid enter into interiors of products, thus can strengthen the effect of waterproof, and ensure that flexible circuit board is normal Operate and extend life of product, and reducing overall thickness makes it more be thinned.

Secondary objective of the present utility model is in that the bottom plate of the Key element is disposed on flexible circuit board lower surface, and PWM control chip is set to stretch into the holes of bottom plate, so the thickness of bottom plate can save PWM control chip occupancy Highly, flexible circuit board is only increased light-emitting component height, with ingenious with overall space configuration up and down, press keycap It will not be interfered in stroke range by PWM control chip or light-emitting component, and overall gross thickness is reduced, and works as user When pressing keycap pushes flexible member, the thin film switch of the switch or film circuit board that can trigger circuit board, which is formed, to electrically conduct, And pulse-width modulation signal percentage is controlled to be controlled respectively correspondingly with sequence switch according to PWM control chip by control circuit The light-emitting component of the keycap, the density difference of light-emitting component distribution of each keycap not in reason unit area is allowed to cause luminance Degree can not be consistent, and provide consistent brightness output, and then lift the effect of Luminescence Uniformity.

Another object of the present utility model is in that the printing opacity secluding film can also include a ground metal layer, the grounded metal Layer be by printing, etching or plating process processing mode is molded in multiple convex closure circumferential surface, and by metal lead wire or Hardware or system on mode and the keyboards such as overlap joint form common ground loop, can be by ground metal layer by circuit board Electromagnetic interference caused by surrounding, and the static discharge directed transmission of human contact, accumulation in keyboard to earth-return circuit are carried out Release, and the effect with electromagnetic shielding with electrostatic protection, to avoid light-emitting component or other electronic components by excessively electrically Punch through damage or failure caused by stress, and then ensure circuit board normal work and the stability and reliability of signal transmission.

The utility model provide it is a kind of have a water-proof function can adjustment formula keyboard, it is characterised in that including：

One flexible circuit board, two side surfaces up and down of the flexible circuit board are respectively equipped with multiple light-emitting components and control circuit A PWM control chip, the PWM control chip and the light-emitting component be electrically connected with, the control circuit according to PWM control chip control pulse-width modulation signal percentage controls the brightness of the light-emitting component；

One printing opacity secluding film, the printing opacity secluding film lower surface are incorporated into the flexible circuit board upper surface, and in the printing opacity every Integrally formed with upward multiple convex closures on exhausted film, the convex closure, which is respectively coated by be positioned at outside the light-emitting component, forms sealing State；And

One Key element includes upper surface and supports the bottom plate for being affixed on the flexible circuit board lower surface, a keycap and a connection member Part, the bottom plate are provided with an at least holes, and the PWM control chip is stretched into the holes, and the keycap is worn by the connecting element The printing opacity secluding film is crossed to be arranged on the bottom plate and be moved upwardly or downwardly with the flexible circuit board, the light-emitting component towards this Keycap, which projects light, makes the keycap light.

Wherein the printing opacity secluding film is a polyester film, a makrolon or a polyphenyl dioctyl phthalate ethylene glycol for isolation material Ester.

The wherein printing opacity secluding film lower surface is provided with an adhesion layer, and the adhesion layer by be coated with or print processing mode into For type in the circumferential surface below the convex closure, the printing opacity secluding film is incorporated into the flexible circuit board upper surface by the adhesion layer.

Wherein the adhesion layer is a pressure-sensing glue, a PUR, an epoxy resin or a photo-hardening resin.

Wherein the height of the PWM control chip is not more than the thickness of the bottom plate.

Wherein the printing opacity secluding film upper surface to should keycap be provided with a switch, and in the printing opacity secluding film to that should switch Provided with a through hole, the Key element is also provided with comprising the flexible member being arranged between the switch and the keycap, the flexible member When pushing an electric conductor of the switch is triggered through the through hole.

Wherein the flexible circuit board and the printing opacity secluding film to should keycap be respectively equipped with multiple perforation and perforate, the connection Element is arranged on the bottom plate through the perforate and the perforation.

The wherein printing opacity secluding film also includes a ground metal layer, and the ground metal layer is by printing, etching or coating adds Work mode is molded in the circumferential surface of the convex closure, and forms common ground with default key disk by metal lead wire or overlapping mode Loop.

Wherein the ground metal layer is copper, tin, gold or silver-colored material.

Wherein the Key element also includes a film circuit board, and the film circuit board is arranged between the bottom plate and the keycap And provided with to should keycap a thin film switch, be provided with when pushing between the thin film switch and the keycap and opened to trigger the film The flexible member closed.

The beneficial effects of the utility model are, its can with the aqueous vapor or fluid isolation in the external world, to avoid enter into product Portion produces short circuit or damage, thus can strengthen the effect of waterproof, and PWM control chip is inserted into the holes of bottom plate, can Saving the height taken makes entirety more be thinned.

Brief description of the drawings

To reach above-mentioned purpose and effect, with reference to embodiments and accompanying drawing is described in detail as after, wherein：

Fig. 1 is stereo appearance figure of the present utility model.

Fig. 2 is three-dimensional exploded view of the present utility model.

Fig. 3 is side cutaway view of the present utility model.

Fig. 4 is the side cutaway view of the utility model light emitting module.

Fig. 5 is the side cutaway view of the utility model preferred embodiment light emitting module.

Fig. 6 is the side cutaway view of another preferred embodiment light emitting module of the utility model.

Fig. 7 is the side cutaway view of the another preferred embodiment of the utility model.

Fig. 8 is the side cutaway view of the utility model another embodiment.

Embodiment

Refer to shown in Fig. 1-Fig. 6, be stereo appearance figure respectively of the present utility model, three-dimensional exploded view, side elevational cross-section The luminous mould of figure, the side cutaway view of the side cutaway view of light emitting module, preferred embodiment light emitting module and another preferred embodiment The side cutaway view of block, it can be clearly seen from the figure that, it is of the present utility model tool water-proof function can adjustment formula keyboard include it is soft Circuit board 1, printing opacity secluding film 2 and Key element 3, wherein：

The flexible circuit board 1 is up and down to be respectively equipped with the one of multiple light-emitting components 11 and control circuit 10 on two side surfaces PWM (Pluse Width Modulation, referred to as PWM) control chip 12, each light-emitting component 11 is a hair The crystal grain of optical diode (LED), and by the PWM control chip 12 by the line layer of the control circuit 10 respectively with institute State light-emitting component 11 to be electrically connected with, the PWM control chip 12 has a PWM setting value, and PWM controls Chip 12 can be adjusted by the pulsewidth that control circuit 10 is exported to light-emitting component 11 according to each channel of PWM set value calculation Varying signal percentage, and the repetition pulse sequence difference control electric current opened or closed by pulse-width modulation signal with sequential passes through each hair The brightness that optical element 11 independently lights；In addition, flexible circuit board 1 is to be respectively equipped with a switch 13 between every two light emitting 11, But when practical application, position and quantity that the light-emitting component 11 can also be set according to control circuit 10 with 13 design alterations of switch, And the first conductive part 131 for having of the switch 13 and the second conductive part 132 can be respectively the line layer of control circuit 10 with copper foil The electrode contact of formed mutual dislocation, and flexible circuit board 1 is provided with least at the light-emitting component 11 and the surrounding of switch 13 One perforation 14, the perforation 14 also can on demand or selection change set position and quantity.

The printing opacity secluding film 2 is the film of an individual layer printing opacity isolation material, and the film is polyester film (Mylar, a Mai La Piece), makrolon (PC), polyethylene terephthalate (PET) or other have printing opacity insulate and pliability material it is made Into, and on printing opacity secluding film 2 integrally formed with upward multiple convex closures 21.

In the present embodiment, printing opacity secluding film 2 be made by way of mould compacting on the film of its smooth shape in advance into Type has upward multiple convex closures 21, and is provided with an adhesion layer 22 in the lower surface of printing opacity secluding film 2, and the adhesion layer 22 is a sense Moulding, but when practical application, also can be PUR, epoxy resin (EPOXY), photo-hardening resin (such as UV glue) or other are appropriate Material, be not limited thereto, and adhesion layer 22 is by being coated with, printing in opening circumferential surface below multiple convex closures 21 Be molded Deng processing mode, a mould release membrance also can be further pasted with adhesion layer 22, when printing opacity secluding film 2 be arranged at it is soft It is first to be torn off mould release membrance, and make to correspond respectively to light-emitting component at multiple lower openings of convex closure 21 when on property circuit board 1 Behind 11 positions, then printing opacity secluding film 2 pushed, you can the upper surface of flexible circuit board 1 is incorporated into by the adhesion layer 22, made simultaneously Multiple convex closures 21, which are respectively coated by, is positioned at one sealing state of the outside of light-emitting component 11 formation, thus may make up a light emitting module, and Completely cut off with formation such as the aqueous vapor in external environment or liquid, to strengthen the effect of the waterproof of flexible circuit board 1.

Furthermore refer to as shown in fig. 6, the printing opacity secluding film 2 also includes a ground metal layer 23, the ground metal layer 23 It is a bronze medal (such as copper foil), but when practical application, also can is tin, gold or silver-colored material, be not limited thereto, and ground metal layer 23 Be by printing, etching or plating process processing mode is molded in multiple circumferential surface of convex closure 21, with form a copper foil layer or The aspect of wire netting, and pass through metal lead wire (such as copper or aluminium), overlap joint (such as copper frame) or welding (such as solder or conducting resinl) Mode forms common ground loop with the hardware on acquiescence keyboard or system, can be by ground metal layer 23 by soft electricity Caused electromagnetic interference (EMI) around road plate 1, and the static discharge (ESD) of human contact, accumulation in keyboard is given tacit consent to are led Draw to transmit to earth-return circuit and discharged, and with electromagnetic shielding and the effect of electrostatic protection, to avoid because of light-emitting component 11 or Other electronic components (such as electric capacity, transistor etc.) by the excessive electrically punch through damage or failure caused by stress, and strengthen be The function of system ground connection, and then ensure the normal work of flexible circuit board 1 and the stability and reliability of signal transmission.

However, above-mentioned printing opacity secluding film 2 is provided with an at least through hole 24, but when practical application to that should switch at 13, The printing opacity secluding film 2 can also be provided with multiple perforates 25 of predetermined shape or rectangle at 14 to that should perforate, and the through hole 24 with should Perforate 25 is molded by way of mould punching, also can on demand or selection change set position and quantity, every fortune Changed with the simple modification carried out by the utility model specification and accompanying drawing content and equivalent structure, all should similarly be contained in this practicality In new the scope of the claims.

The Key element 3 includes the bottom plate 31 for being arranged at the lower surface of flexible circuit board 1, a keycap 32 and a connection member Part 33, in the present embodiment, the upper surface of bottom plate 31 are to being affixed on the lower surface of flexible circuit board 1, and to should PWM An at least holes 311 is provided with control chip 12, because the height of PWM control chip 12 is no more than (such as less than or waiting In) thickness of the bottom plate 31, so when flexible circuit board 1 is arranged on bottom plate 31, the PWM control chip 12 can be to Under stretch into the holes 311 (as shown in Figure 5), the keycap 32 is the corresponding light-emitting component 11 with the switch 13, and passing through The connecting element 33 is arranged on the bottom plate 31, and the connecting element 33 is also comprising one be arranged between the switch 13 and the keycap 32 Flexible member 34, it can be moved upwardly or downwardly for user's pressing or when decontroling the keycap 32 relative to the bottom plate 31.

In the present embodiment, the flexible member 34 is provided with an electric conductor 321, and the flexible member 34 also includes dome-shaped One body 340 and the film layer 342 for being available for the body 340 to be arranged on, the electric conductor 341 can use printing processing mode will It is printed on inside the body 340, and electric conductor 341 can be a conductive silver glue, electrically-conducting paint or carbon film (such as graphite), and thin in this For film layer 342 adjacent to a slotted eye 343 (as shown in Figure 3) is provided with the body 340, the film layer 342 is right around the body 340 Multiple open-works 344 should be provided with perforate 25；Also, multiple snap fits 312 are then provided with the bottom plate 31, and each snap fit 312 is upward At the perforation 14, the perforate 25 of printing opacity secluding film 2 and the open-work 344 of flexible member 34 for sequentially passing through flexible circuit board 1, and connect Element 33 includes an inner frame and the outer framework being mutually pivotally connected with the inner frame, and is pacified by the inner frame and the outer framework one end Loaded on the snap fit 312, the other end be installed on another snap fit at the bottom surface of keycap 32, when the keycap 32 push the elasticity member During part 34, its electric conductor 341 will be directly through slotted eye 343, and the through hole 24 of printing opacity secluding film 2 at, or body 340 It is held in film layer 342, its electric conductor 341 is passed through at through hole 24.

Furthermore when user is pressed down in the keycap 32, keycap 32 will drive connecting element 33 and the bottom of relative to Plate 31 moves downward, and by being pressed under keycap 32 on flexible member 34, make its electric conductor 341 through slotted eye 343 and printing opacity every After at the through hole 24 of exhausted film 2, the first conductive part 131 for being contacted with switch 13 can be corresponded to and the second conductive part 132 is formed electrically Conducting state, the control module of control circuit 10 is set to produce the control corresponding to the character symbols of keycap 32 with trigger switch 12 Signal output processed；If user is decontroled when the keycap 32, the flexible member 34 will reset and push up and peak at keycap 32 At bottom surface, and it is related connecting element 33 can be moved upwards relative to bottom plate 31, and the electric conductor 341 of flexible member 34 departs from The first conductive part 121 and the second conductive part 122 of switch 12 form the state that electrically disconnects, and can complete the single of Key element 3 Pressing stroke.

In the present embodiment, bottom plate 31 is disposed on the lower surface of flexible circuit board 1, and makes the lower surface of flexible circuit board 1 PWM control chip 12 is inserted into the holes 311 of bottom plate 31, so the thickness of bottom plate 31 can save PWM control Chip 12 is arranged on the height taken on flexible circuit board 1, flexible circuit board 1 is arranged between bottom plate 31 and keycap 32 only Increase the height needed for light-emitting component 11, can the ingenious model for using overall space configuration up and down, making the pressing stroke of keycap 32 It will not be interfered in enclosing by PWM control chip 12 or light-emitting component 11, and the flexible circuit board 1 collocation bottom plate 31 is saving It in the case of saving the occupancy height of PWM control chip 12, can reduce overall gross thickness.

, can be 10 by control circuit when the keycap 32, which pushes the flexible member 34 triggering switch 13 formation, to electrically conduct Control pulse-width modulation signal percentage to control the brightness of each light-emitting component 11 respectively according to PWM control chip 21, and make hair The light that optical element 11 projects towards the keycap 32 is not required to can be directly by the perforation 344 of flexible member 34 via bottom plate 31 Place, reenter be incident upon passed at the keycap 32 with translucency after form backlight, so as to which the luminous function of keyboard, such a arteries and veins can be realized Width modulation control chip 12 can control pulse-width modulation signal percentage to control the multiple hairs for corresponding to keycap 32 respectively with sequence switch Optical element 11, each 11 independent luminosity of light-emitting component is set to allow each keycap 32 not reason unit area with controlled The density difference that interior light-emitting component 11 is distributed causes luminosity not to be consistent, and provides consistent brightness output, and The light-emitting component 11 may be selected to be arranged to should in the existing holes 311 of bottom plate 31 without being limited by Spatial infrastructure, Also adjustment light-emitting component 11 that can be appropriate coordinates the quantity that keycap 32 is set, and then lifts the effect of Luminescence Uniformity.

In addition, it can not only omit leading for known backlight module on flexible circuit board 1 to be laid with multiple light-emitting components 11 The thickness of tabula rasa and reflecting piece storehouse, and in the case of the backlight module number of plies known to reduction, you can simplify overall structure with accounting for Volume, and can also effectively shorten assembling procedure during assembled component reduction and reduce the cost of manufacture, such a printing opacity isolation Film 2 is combined closely on flexible circuit board 1, and be coated on light-emitting component 11, the outside of PWM control chip 12 forms sealing State, it can effectively prevent aqueous vapor or liquid etc. from entering the effect of interiors of products, to avoid the electronic component of flexible circuit board 1, line Road etc. produce short circuit or damage, therefore ensure that flexible circuit board 1 normally running and extend product service life, due to printing opacity every The exhausted thickness range of film 2 is between 12 μm -250 μm, can effectively reduce the overall thickness of light emitting module, and arrange in pairs or groups and be applied to key Disk makes its gross thickness is relative to reduce and be more thinned.

Please arrange in pairs or groups refering to shown in Fig. 7, Fig. 8, be respectively the side cutaway view of the another preferred embodiment of the utility model and The side cutaway view of another embodiment, it can be clearly seen from the figure that, the utility model tool water-proof function can adjustment formula key Keyboard that the electronic installation of disk application uses including but not limited to notebook computer, dismountable keyboard or desktop computer etc., In the present embodiment, the body 340 of the flexible member 34 can be directly integrally formed with film layer 342, and in the lower section phase of body 340 Adjacent to being provided with a slotted eye 343 at film layer 342, and the Key element 3 also includes a film circuit board 35, the film circuit board 35 Preferably implement to be disposed between the bottom plate 31 and the keycap 32, but when practical application, be not limited thereto, also can be thin by this Membrane circuit board 35 supports and is affixed on the upper surface of printing opacity secluding film 2, and the line layer of the inside upper strata of film circuit board 35 and lower floor or The line layer of same layer is provided with two electrode contacts of a thin film switch 351, and the film circuit board 35 and the corresponding keycap 32 Between be provided with a flexible member 34, you can omit the switch 13 on circuit board 1, and the electric conductor 341 of the flexible member 34, when When user presses on keycap 32 and pushes flexible member 34, it can be touched by flexible member 34 in film circuit board 35, make its film Two electrode contacts of switch 351 are in contact with each other to form the state of electrically conducting, and make the control of control circuit 10 to trigger thin film switch 351 Molding block produces the control signal output corresponding to the character symbols of keycap 32.

Therefore the utility model is respectively equipped with multiple light-emitting components 11 and control mainly for the upper and lower surface of flexible circuit board 1 The PWM control chip 12 of circuit 10 processed, and be electrically connected with by PWM control chip 12 and light-emitting component 11, you can Pulse-width modulation signal percentage is controlled to control the brightness of light-emitting component 11 respectively according to PWM control chip 12, and it is soft The upper surface of circuit board 1 is combined with printing opacity secluding film 2, and the lower surface of flexible circuit board 1 is provided with the bottom plate 31 of Key element 3, Can be respectively coated by by the convex closure 21 of printing opacity secluding film 2 and be positioned at the outside of light-emitting component 11 and form a sealing state, and with it is outer The aqueous vapor or fluid isolation on boundary, to strengthen the effect of waterproof, and PWM control chip 12 stretches into the holes 311 of bottom plate 31 Interior, can save the height of occupancy makes entirety more be thinned.

Above-mentioned detailed description is to illustrate that only the embodiment is simultaneously for a kind of preferably possible embodiments of the utility model Be not used to limit claim of the present utility model, it is all other without departing from institute under the technical spirit disclosed in the utility model The equivalent changes and modifications change of completion, is intended to be limited solely by the right that the utility model is covered.

In summary, the above-mentioned tool water-proof function of the utility model can adjustment formula keyboard for can reach really its effect and Purpose, therefore the utility model is really the excellent creation of a practicality, meets the application important document of new patent in fact, therefore propose Shen in accordance with the law Please.

Claims (10)

1. it is a kind of have a water-proof function can adjustment formula keyboard, it is characterised in that including：

One flexible circuit board, two side surfaces up and down of the flexible circuit board are respectively equipped with the one of multiple light-emitting components and control circuit PWM control chip, the PWM control chip are electrically connected with the light-emitting component, and the control circuit is according to the arteries and veins Width modulation control chip control pulse-width modulation signal percentage controls the brightness of the light-emitting component；

One printing opacity secluding film, the printing opacity secluding film lower surface are incorporated into the flexible circuit board upper surface, and in the printing opacity secluding film On integrally formed with upward multiple convex closures, the convex closure, which is respectively coated by be positioned at outside the light-emitting component, forms sealing shape State；And

One Key element includes upper surface and supports the bottom plate, a keycap and a connecting element for being affixed on the flexible circuit board lower surface, The bottom plate is provided with an at least holes, and the PWM control chip is stretched into the holes, and the keycap is passed through by the connecting element The printing opacity secluding film is arranged on the bottom plate and is moved upwardly or downwardly with the flexible circuit board, and the light-emitting component is towards the key Cap, which projects light, makes the keycap light.

2. as claimed in claim 1 tool water-proof function can adjustment formula keyboard, it is characterised in that wherein the printing opacity secluding film is A polyester film, a makrolon or a polyethylene terephthalate for isolation material.

3. as claimed in claim 1 tool water-proof function can adjustment formula keyboard, it is characterised in that wherein under the printing opacity secluding film Surface is provided with an adhesion layer, and the circumferential surface that the adhesion layer is molded over below the convex closure by being coated with or printing processing mode On, the printing opacity secluding film is incorporated into the flexible circuit board upper surface by the adhesion layer.

4. as claimed in claim 3 tool water-proof function can adjustment formula keyboard, it is characterised in that wherein the adhesion layer is a sense Moulding, a PUR, an epoxy resin or a photo-hardening resin.

5. as claimed in claim 1 tool water-proof function can adjustment formula keyboard, it is characterised in that wherein the PWM controls The height of chip is not more than the thickness of the bottom plate.

6. as claimed in claim 1 tool water-proof function can adjustment formula keyboard, it is characterised in that wherein on the printing opacity secluding film Surface to should keycap be provided with a switch, and in the printing opacity secluding film to that should switch provided with a through hole, the Key element also wraps Containing the flexible member being arranged between the switch and the keycap, the flexible member is provided with when pushing and triggers this through the through hole and open The electric conductor closed.

7. as claimed in claim 1 tool water-proof function can adjustment formula keyboard, it is characterised in that wherein the flexible circuit board with The printing opacity secluding film to should keycap be respectively equipped with multiple perforation and perforate, the connecting element is set through the perforate and the perforation It is placed on the bottom plate.

8. as claimed in claim 1 tool water-proof function can adjustment formula keyboard, it is characterised in that wherein the printing opacity secluding film is also Comprising a ground metal layer, the ground metal layer is by printing, etching or coating processing mode is molded over surrounding's table of the convex closure On face, and common ground loop is formed with default key disk by metal lead wire or overlapping mode.

9. as claimed in claim 8 tool water-proof function can adjustment formula keyboard, it is characterised in that wherein the ground metal layer is Copper, tin, gold or silver-colored material.

10. as claimed in claim 1 tool water-proof function can adjustment formula keyboard, it is characterised in that wherein the Key element is also Comprising a film circuit board, the film circuit board be arranged between the bottom plate and the keycap and provided with to should keycap a film Switch, it is provided between the thin film switch and the keycap when pushing triggering a flexible member of the thin film switch.