CN206471257U - Possesses the backlight module of thin film switch function - Google Patents

Abstract

The utility model provides a kind of backlight module for possessing thin film switch function, it is to be laid with first line layer on its reflecting layer that surface is formed on the reflecting film, and first line layer upper surface is provided with light guide plate, and light guide plate upper surface is to be provided with photomask, and it is laid with the second line layer of symmetrical first line layer position in photomask lower surface, and adjacent to the light-emitting component that light source is provided with light guide plate, such a reflectance coating can not only omit prior art Reflecting sheet structure, and directly make the lower circuit of script thin film switch on the reflecting film, and can arrange in pairs or groups be integrated with light-emitting component connection circuit, just it is not required to additionally be equiped with the number of openings that flexible circuit board and reduction reflecting piece with light emitting diode are opened up, overall gross thickness is reduced to simplify structure, and shorten assembling procedure and reduction manufacturing cost, and can increase the quantity that area and light-emitting component are set of laying of reflectance coating space utilization because through hole is reduced, and then the illumination effect of backlight module can be lifted.

Description

Possesses the backlight module of thin film switch function

Technical field

The utility model is related to a kind of backlight module for possessing thin film switch function, more particularly to the reflecting layer of reflectance coating is The first line layer of thin film switch lower floor is laid with, and light guide plate is provided with as middle interlayer and photomask on first line layer Second line layer on upper strata, and can arrange in pairs or groups be integrated with light source connection circuit, reduce overall gross thickness to simplify structure.

Background technology

The fast development of electronics technology and information industry now, makes various electronic products both facing to light, thin, short, small and work( The powerful trend development of energy, such as computer, notebook computer, action Internet device (MID), smart mobile phone, tablet PC, Modern's electronic product indispensable in daily life or work is turned into, and has been mostly between user and electronic product Linked up using input equipments such as mouse, keyboards, wherein the most conveniently making the input behaviour of word, numeral or instruction with keyboard again Make, 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 backlight keyboard with backlight module, is produced backlight module Raw light, which can be projected, forms backlight effect at the back side of each keycap, allow user to be apparent that the symbol on keycap Number, operated with facilitating, and backlight keyboard on the market includes key-press module and backlight module at present, wherein the backlight mould Block is, with a light guide plate, and to be provided with the side surface of light guide plate one the luminous list with flexible circuit board and light emitting diode Member, and luminescence unit is to make light guide plate uniformly light-emitting towards light guide plate throw light, but light guide plate lower surface is provided with can be by leaded light Light emitted by plate lower surface is reflected back the reflecting piece on light guide plate, and light guide plate upper surface is provided with and corresponded at key-press module Anti-dazzling screen, just the transmittance section of the light emitted by light guide plate through anti-dazzling screen can be incident on key-press module and form backlight.

However, the key-press module above backlight module includes bottom plate, multiple push-button units, film circuit board and at least One flexible member, wherein push-button unit include keycap and between keycap and bottom plate above and below work to be arranged on bottom plate The link mechanism of motion, and flexible member is is arranged between film circuit board and multiple push-button units, when user press on by When in the key cap surface of key unit, its keycap will push flexible member and touch on film circuit board, and utilize two films Upper strata and the lower circuit of thin film switch are laid with layer opposed inside surface respectively, and it is electric provided with being formed between two film layers Middle interlayer needed for sexual isolation, makes film layer may pass through the open-work of middle interlayer and the thin film switch of lower film layer when being compressed It is in contact with each other to be formed and electrically conducts, is exported with the trigger signal produced corresponding to the push-button unit character symbols being pressed to the back of the body The controller of light keyboard, just can carry out the input operation of word, numeral or instruction.

Because backlight keyboard uses so far good decades, make the technology of backlight keyboard very ripe, and in the back of the body In the case that light keyboard structure simplifies very much, a brand-new structure is only developed, and with the lifting of process technique And produce with ultra fine-line, more slimming and the light-weighted circuit board of material, otherwise backlight keyboard construction is made Very huge change is highly difficult, so being typically all in backlight keyboard thin portion structure when general configuration can not change Make to change to reduce overall gross thickness really, can more meet light, thin, short, the small design requirement of backlight keyboard Related product, and Assembling procedure and element manufacturing cost, which also need to add, to be considered, begins to meet the actual utilization of backlight keyboard, only the backlight keyboard Backlight module used at present is to be equiped with reflecting piece, and at the side surface of light guide plate one with the soft of light emitting diode It is respectively arranged with reflecting piece above and below property circuit board, and light guide plate at both sides from lower to upper and anti-dazzling screen integrates layer structure, The film circuit board of key-press module of arranging in pairs or groups again is laid with upper strata and the lower circuit of thin film switch, and two using two film layers Provided with required middle interlayer is electrically isolated between individual film layer, such a multi-layer structure design can not simplify overall structure, make total thickness Relative increase is spent, and in assembling as component is more and is difficult to effectively shorten assembling procedure, and also need to match somebody with somebody in reflecting piece Close flexible circuit board and open up many and be available for light emitting diode to stretch into the through hole towards light guide plate throw light, cause largely to manufacture into This is high, and the relevant manufactures for as engaging in the industry desire most ardently the direction place that research improves.

Utility model content

The utility model creator in view of it is above-mentioned common the problem of with missing, collect related data assess via multi-party and Consider, and using the experience of research and development for many years constantly experiment and the modification for engaging in the industry, design and such a possess thin film switch The backlight module utility model of function.

It is thin to be laid with the reflecting layer of reflectance coating upper surface that main purpose of the present utility model is that backlight module is located at The first line layer of membrane switch lower floor, and it is sequentially provided with light guide plate and photomask, and photomask in first line layer upper surface Lower surface is laid with second line layer of the thin film switch upper strata positioned at first line layer symmetric position, and backlight module is adjacent to leading Be provided with tabula rasa light source can towards light incident area throw light light-emitting component, the structure design of such a reflectance coating not only may be used Prior art reflecting piece is omitted, and the lower circuit of script thin film switch is directly made on the reflecting film, and the integration that can arrange in pairs or groups The circuit and power circuit for having light-emitting component to be electrically connected with, are just not required to additionally be equiped with the flexible circuit board with light emitting diode And reduce the number of openings that opens up of reflecting piece, make the overall volume taken and gross thickness reduction and more slim to simplify structure Change, and component reduction can shorten assembling procedure and reduction manufacturing cost in assembling, and can increase reflectance coating because through hole is reduced First line sheaf space use laying area, light-emitting component can be also increased luminous according to diverse location is alternatively provided at Element coordinates the quantity that light guide plate is set, to lift the illumination effect of backlight module.

Secondary objective of the present utility model is the reflectance coating of backlight module using making thin film switch lower floor on reflecting layer The first line layer of first electrode contact circuit, and the conductive junction point circuit one for being available for light-emitting component to be electrically connected with light source of arranging in pairs or groups And be produced on first line layer, and part circuit can also arrange in pairs or groups wire jumper respectively to make, also can by sandwich circuit under thin film switch with Light-emitting component (light emitting diode) circuit is produced on first line layer same layer position, or is distinctly fabricated separately in reflectance coating Upper strata/lower floor, and light guide plate is provided between reflectance coating and photomask, in addition to shinny with light conduction and leaded light, and profit Needed for being electrically isolated with open-work preset space length as the first line layer of thin film switch lower floor with the second line layer formation on upper strata Middle interlayer.

Another object of the present utility model is that backlight module is to be provided with button assembly at being located above photomask, and wraps Bottom plate, multiple push-button units and flexible member are included, wherein push-button unit includes keycap and the chain between keycap and bottom plate Connection mechanism, and flexible member is arranged between push-button unit and photomask, when user presses on push-button unit, its keycap will Drive and link mechanism, and push flexible member and be held in the line layer of photomask second and stretch into the open-work of light guide plate, you can pass through Open-work provides the displacement stroke needed for elastic deformation, second line layer on thin film switch upper strata is contacted with the of reflectance coating lower floor The formation of one line layer electrically conducts, and is exported with the trigger signal produced corresponding to the push-button unit character symbols being pressed to the back of the body The controller of light keyboard；When the light incident area of light-emitting component towards the light guide plate of light source projects light, light can be made to exist Conducted inside light guide plate and uniform leaded light is shinny, and utilize the reflecting layer light that projects light guide plate lower surface of reflectance coating Line reflection is returned on light guide plate, after making the light of light guide plate upwardly through the transmission region of photomask, is reentered and is incident upon on button assembly Backlight is formed at push-button unit with light-transmissive.

Brief description of the drawings

Fig. 1 is the stereo appearance figure of the preferred embodiment of the utility model first.

Fig. 2 is the three-dimensional exploded view of the preferred embodiment of the utility model first.

Fig. 3 is the front sectional elevation of the utility model Figure 1A-A sections.

Fig. 4 is the side cutaway view of the utility model Figure 1B-B sections.

Fig. 5 is the partial enlarged drawing of the utility model Fig. 4 X sections.

Fig. 6 is the three-dimensional exploded view of the preferred embodiment of the utility model second.

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

Fig. 8 is the partial enlarged drawing of the utility model Fig. 7 Y portions.

【Description of reference numerals】

1st, reflectance coating

11st, reflecting layer

12nd, first line layer

121st, first electrode contact

122nd, conductive junction point

13rd, perforate

2nd, light guide plate

21st, open-work

22nd, light incident area

221st, hole

23rd, perforate

3rd, photomask

31st, the second line layer

311st, second electrode contact

312nd, conductive junction point

32nd, perforate

4th, light source

41st, light-emitting component

5th, button assembly

51st, bottom plate

511st, docking section

5111st, snapping pin

52nd, push-button unit

521st, keycap

522nd, mechanism is linked

53rd, flexible member

Embodiment

To reach above-mentioned purpose and effect, technological means and its construction that the utility model is used now are drawn with regard to this reality Its construction is explained detailedly with new preferred embodiment and function is as follows, is understood completely with sharp.

Refer to shown in Fig. 1,2,3,4 and 5, respectively the stereo appearance figure of the preferred embodiment of the utility model first, vertical Body exploded view, the front sectional elevation of Figure 1A-A sections, the partial enlarged drawing of the side cutaway view of Figure 1B-B sections and Fig. 4 X sections, It can be clearly seen from the figure that, the backlight module of the present utility model for possessing thin film switch function is to include reflectance coating 1, light guide plate 2nd, photomask 3 and it is made uniformly to guide luminous light source 4 towards the throw light of light guide plate 2, therefore with regard to the main member and feature of this case It is described in detail as after, wherein：

The reflectance coating 1 is the film of a single layer dielectrics material, and its film can be makrolon (PC), poly- ethylene two Made by alcohol ester (PET), polyester film (MYLAR steps pulling-on piece) or other materials with flexibility, and in the side table of reflectance coating 1 (such as upper surface) is formed with low using the ink or other materials of white high reflection with being coated with, printing processing mode on face It is laid with the reflecting layer 11 of printing opacity and high reflectance, and the surface of reflecting layer 11 using processing procedure modes such as printing, etching and plating Have the first line layer 12 of circuit (not shown), include multiple first electrode contacts 121, at least respectively on circuit The conductive junction point 122 and power supply contact (not shown) of one group of positive pole and negative pole.

The light guide plate 2 is the laminar material that an individual layer possesses light-guiding function, and its soft board can be makrolon (PC), poly- first Base methyl acrylate (PMMA) or other have made by the material of high index of refraction, and processed using printing, gluing, hot pressing etc. Mode is arranged on the side surface of reflectance coating 1 one (such as 12 upper surface of first line layer), and machine drilling, punching are utilized on light guide plate 2 The mode such as pressure or Laser Processing produces multiple open-works 21 at corresponding to first electrode contact 121 respectively, then in the table of light guide plate 2 Light incident area 22 is formed with face, and above-mentioned processing mode can also be used in light incident area 22 and is produced at least One corresponding to the hole 221 at conductive junction point 122.

The photomask 3 is the film of a single layer dielectrics material, and its film can be makrolon (PC), poly- ethylene two Made by alcohol ester (PET), polyester film (MYLAR steps pulling-on piece) or other materials with flexibility, and it is arranged at the phase of light guide plate 2 For (such as lower surface) utilizes white high reflection on (such as upper surface), and the side surface of reflectance coating 1 one on the another side surface of reflectance coating 1 Or the ink or other materials of the high extinction of black are formed with light shield layer (not shown) the processing mode such as to be coated with, print, but In practical application, reflectance coating 1 itself is alternatively with semi-transparent or impermeable light color (such as dark or light color), the film of material Or shading rubber belt (not shown) is further pasted with aforementioned film surface, then formed on photomask 3 or its light shield layer Have corresponding to the transmission region (not shown) at open-work 21, and photomask 3 relative on the inner surface of light guide plate 2 (such as Lower surface) it is the second line layer 31 that tool circuit (not shown) is laid with using processing procedure modes such as printing, etching and plating, Second line layer 31 and first line layer 12 is located at symmetric position, and includes multiple second electrode contacts 311 on the line, And first electrode contact 121 of the second electrode contact 311 respectively with open-work 21 and the first line layer 12 of light guide plate 2 is mutually right Should.

The light source 4 includes at least one towards the side incidence surface of light guide plate 2 (figure to be arranged on adjacent at light guide plate 2 Not shown in) project light side is illuminated or top type light emitting element 41 (such as light emitting diode), and each light-emitting component 41 are welded in the conduction of at least one set of positive pole of the first line of reflectance coating 1 layer 12 and negative pole using surface adhering technical (SMT) mode It is electrically connected on contact 122, and light-emitting component 41 is respectively protruding into corresponding light incident area 22 and position on light guide plate 2 In in hole 221, making light guide plate 2 to receive, light that light-emitting component 41 projects is conducted and guide-lighting inside it, then profit The total reflection of light is destroyed with density, design of different sizes with micro-structural or diffusion point (not shown), makes light Line can be directed to the exiting surface (not shown) that light guide plate 2 suitably locates project away and with overall equal of increase lighting area Even property is with lifting shinny briliancy function.

However, above-mentioned reflectance coating 1 is connect using making thin film switch lower floor first electrode on reflecting layer 11 in the present embodiment The first line layer 12 of 121 circuits of point, and light source 4 is available for the circuit of conductive junction point 122 that light-emitting component 41 is electrically connected with by collocation It is produced in the lump on first line layer 12, and part circuit can also arrange in pairs or groups wire jumper respectively to make, but in practical application, also may be used The L E D (hairs for being connected the lower sandwich circuit of thin film switch with light-emitting component 41 according to the self-defined specification of manufacturer or customized demand Optical diode) circuit is produced on 12 same layer position of first line layer, or above-mentioned circuit can be distinctly fabricated separately The upper strata of reflectance coating 1 (such as upper surface)/lower floor (such as lower surface), and light guide plate 2 is then provided between reflectance coating 1 and photomask 3, remove Have outside light conduction and guide-lighting shinny function, and separate preset space length as thin film switch lower floor the using open-work 21 The formation of second electrode contact 311 of the first electrode contact 121 of one line layer 12 and the second line layer of upper strata 31 electrically isolates institute It can also be arranged in pairs or groups on the middle interlayer needed, and first line layer 12 and be integrated with the power supply contact of power circuit and be electrically connected at outside Power supply source, simple modification and equivalent structure change that all utilization the utility model specifications and accompanying drawing content are made, all should be similarly It is contained in the scope of the claims of the present utility model, illustrates in this together.

The backlight module of the present utility model for possessing thin film switch function for can further fit applications in button assembly 5 with Illuminated keyboard is constituted, the wherein button assembly 5 includes bottom plate 51, multiple push-button units 52 and at least one flexible member 53, And bottom plate 51 is to be arranged at reflectance coating 1 relative to the lower surface at the another side of light guide plate 2, and it is provided with the surface of bottom plate 51 with button Multiple docking sections 511 of pin 5111, and each snapping pin 5111 is upwards sequentially through reflectance coating 1, light guide plate 2 and photomask 3 Upper corresponding perforation 13,23,32, but push-button unit 52 is is arranged at the top of photomask 3, and include keycap 521 and be located at The link mechanism 522 for being available for keycap 521 to move up and down between keycap 521 and bottom plate 51, and it can be scissor to link mechanism 522 Or butterfly structure, just the axle portion at the periphery of link mechanism 522 (non-label in figure) can be connected to the docking section 511 of bottom plate 51 Snapping pin 5111 and keycap 521 docking section on formation activity be pivotally connected, and can also enter between push-button unit 52 and photomask 3 One step is arranged at the dome-shaped flexible member 53 made by quality of rubber materials, is supported to arrive in elasticity when it is pressed on keycap 521 With good elastic feedback, it also can moderately adjust and be equipped with according to the quantity number of illuminated keyboard institute applications keys component 5 Quantity on backlight module.

When user presses on the push-button unit 52 of button assembly 5, its keycap 521, which will drive, links mechanism 522, and under The second line layer 31 that compression elasticity element 53 is held in photomask 3 is stretched in the open-work 21 of light guide plate 2, you can pass through open-work 21 Displacement stroke needed for the elastic deformation of photomask 3 is provided, makes the second electrode contact 311 of the second line layer of thin film switch upper strata 31 The formation of first electrode contact 121 for being contacted with the lower floor's first line layer 12 of reflectance coating 1 electrically conducts, and just can produce corresponding to the quilt The trigger signal of the character symbols of push-button unit 52 of pressing is exported to the controller of backlight keyboard；If user stop press on by During key unit 52, the flexible member 53 will elastic reset and promote in keycap 521 it is related by link mechanism 522 shift up, And make photomask 3 upward elastic reset is exited at open-work 21 therewith, and the first line layer of the second line layer 31 and reflectance coating 1 12 form electrically isolated, just complete the single pressing stroke of button；In addition, when the light-emitting component 41 of light source 4 carries out luminous, can The incidence surface of open-work 21 towards light incident area 22 projects light, and light is conducted inside light guide plate 2 and uniformly It is guide-lighting with it is shinny, and can pass through reflectance coating 1 reflecting layer 11 light emitted by the lower surface of light guide plate 2 is reflected back light guide plate On 2, make the light of light guide plate 2 via transmission region of the exiting surface upwardly through photomask 3, reenter and be incident upon tool on button assembly 5 Have and backlight is formed after being passed at the push-button unit 52 of light-transmissive, and then reach good backlight keyboard illumination effect.

Reflectance coating 1 of the present utility model is the first line layer 12 that thin film switch lower floor is laid with reflecting layer 11, and The circuit for being available for light-emitting component 41 to connect light source 4 of arranging in pairs or groups is produced on thereon in the lump, and the upper surface of reflectance coating 1 is sequentially provided with and led Tabula rasa 2 and photomask 3, then (such as lower surface) is laid with thin film switch on inner surface of the photomask 3 relative to light guide plate 2 Second line layer 31 of layer, and light guide plate 2 except with light conduction and it is guide-lighting it is shinny in addition to, and using open-work 21 as thin Membrane switch first line layer 12 with second line layer 31 formation electrically isolates needed for middle interlayer, and photomask 3 by The displacement stroke of elastic deformation during pressure, the structure design of such a reflectance coating 1 can not only omit the anti-of prior art backlight module Arrange in pairs or groups and be integrated with mating plate, and the lower circuit of script thin film switch is directly produced on reflectance coating 1, and first line layer 12 Light source 4 is available for the circuit and power circuit that light-emitting component 41 is electrically connected with, and is just not required to additionally be equiped with flexible circuit board and its coupling The light emitting diode connect, the number of openings for being available for light emitting diode to stretch into the inner is opened up to reduce in reflecting piece, and backlight mould Block just can simplify overall structure and the volume taken in the case where the number of plies is reduced, and make gross thickness is relative to reduce and more slim Change, and component is reduced in assembling, so can effectively shorten assembling procedure and reduction manufacturing cost, more because being opened up on reflectance coating 1 Through hole reduce can relative increase first line 12 space of layer with laying area, and the light-emitting component 41 of the light source 4 can be according to Demand is alternatively provided at diverse location without being limited by space, also can moderately adjust light-emitting component 41 and coordinate light guide plate 2 The quantity of setting, and then lift the illumination effect of the backlight module lighting area uniformity.

It please arrange in pairs or groups refering to shown in Fig. 6,7 and 8, respectively the three-dimensional exploded view of the preferred embodiment of the utility model second, side The partial enlarged drawing of pseudosection and Fig. 7 Y portions, it can be clearly seen from the figure that, the first line layer 12 of the wherein reflectance coating 1 is Include multiple first electrode contacts 121 and at least one set of conductive junction point 122 (as shown in Figure 5), and it is electric on conductive junction point 122 Property is connected with the light-emitting component 41 of light source 4, but in practical application, the second line layer 31 of photomask 3 may also comprise it is multiple Second electrode contact 311 and at least one set of conductive junction point 312 (as shown in Figure 8), and it is electrically connected with light on conductive junction point 122 The light-emitting component 41 in source 4, and each light-emitting component 41 is respectively towards the throw light of light incident area 22 of correspondence on light guide plate 2, It can further be arranged in pairs or groups on the second line layer 31 and be integrated with the power supply contact (not shown) of power circuit and be connected to outside Power supply source.

Refer to again as shown in Fig. 2,3,5,6 and 8, the utility model is utilization mainly for the reflectance coating 1 of backlight module The first line layer 12 of thin film switch lower floor is laid with reflecting layer 11, and is sequentially provided with and leads in 12 upper surface of first line layer Tabula rasa 2 and photomask 3, and the lower surface of photomask 3 is laid with thin film switch upper strata positioned at the of first line 12 symmetric position of layer Two line layers 31, but backlight module adjacent to be provided with light guide plate 2 light source 4 can towards the throw light of light incident area 22 hair Optical element 41, and light guide plate 2 except with light conduction and it is guide-lighting it is shinny in addition to, and be used as the first line layer 12 of thin film switch Required middle interlayer is electrically isolated with the formation of the second line layer 31, it is reflective that such a structure design of reflectance coating 1 can omit prior art Piece, and the lower circuit of script thin film switch is directly produced on reflectance coating 1, and the integration light-emitting component 41 that can arrange in pairs or groups electrically connects The circuit and power circuit connect, the gross thickness of entirety is reduced to simplify structure, and is shortened assembling procedure and reduced manufacturing cost, And the through hole opened up by reflecting piece reduce can relative increase reflectance coating 1 first line 12 space of layer with laying area, make Light-emitting component 41 can be according to the quantity that diverse location and increase are set be alternatively provided at, to lift the illumination effect of backlight module.

Above-mentioned detailed description is to illustrate for a kind of preferably possible embodiments of the utility model, simply the embodiment It is not limited to institute under claim of the present utility model, other technical spirits without departing from disclosed in the utility model The equivalent changes and modifications change of completion, is intended to be limited solely by the scope of the claims that the utility model is covered.

In summary, its work(can be reached really when the above-mentioned backlight module with thin film switch function of the utility model is used Effect and purpose, therefore the utility model is the excellent utility model of a practicality, meets the application important document of new patent.

Claims (16)

1. a kind of backlight module for possessing thin film switch function, includes reflectance coating, light guide plate, photomask and light source, wherein：

The reflectance coating upper surface is laid with reflecting layer the first line layer of thin film switch lower floor to be formed with reflecting layer；

The light guide plate is the first line layer upper surface for being arranged at reflectance coating, and is formed with light guide plate light incident area；

The photomask is the upper surface for being arranged at the another side of light guide plate relative reflection film, and in following table of the photomask relative to light guide plate Face is laid with second line layer of the thin film switch upper strata positioned at first line layer symmetric position；

The light source projects light towards light incident area and led to be arranged on adjacent at light guide plate, and including at least one Conducted inside tabula rasa and guide-lighting light-emitting component.

2. the backlight module for possessing thin film switch function as described in claim 1, the wherein reflectance coating are single layer dielectrics materials Makrolon, polyethylene terephthalate or the polyester film of matter, and surface is formed using the ink of white on the reflecting film There is reflecting layer.

3. the first line layer of the backlight module for possessing thin film switch function as described in claim 1, the wherein reflectance coating Upper is to include multiple first electrode contacts, and is provided with multiple open-works corresponding to first electrode junction on light guide plate, and Second line layer of photomask is located at symmetric position with first line layer, and include on the second line layer respectively with open-work and First electrode contact mutually corresponding multiple second electrode contacts.

4. the first line layer of the backlight module for possessing thin film switch function as described in claim 1, the wherein reflectance coating Upper is to include at least one set of conductive junction point, and is provided with least one corresponding to conductive junction point in the light incident area of light guide plate The hole at place, and the light-emitting component of light source be electrically connected at first line layer conductive junction point on, and stretch into it is right on light guide plate The light incident area answered and in hole.

5. the backlight module for possessing thin film switch function as described in claim 1, the wherein light guide plate are individual layer light guides The makrolon or polymethyl methacrylate of matter, and light incident area in light guide plate surface can connect provided with least one Receipts light source projects go out light and conducted inside light guide plate and guide-lighting shinny hole.

6. the backlight module for possessing thin film switch function as described in claim 1, the wherein light guide plate are to be arranged at reflection Between film and photomask, and the middle interlayer electrically isolated is formed as the first line layer and the second line layer of thin film switch.

7. the second line layer of the backlight module for possessing thin film switch function as described in claim 1, the wherein photomask Upper is to include at least one set of conductive junction point, and is provided with least one corresponding to conductive junction point in the light incident area of light guide plate The hole at place, and the light-emitting component of light source is to be electrically connected on the conductive junction point of the second line layer, and stretch into it is right on light guide plate The light incident area answered and in hole.

8. the backlight module for possessing thin film switch function as described in claim 1, the wherein light-emitting component of the light source are side Illuminated or top type light emitting diode.

9. a kind of illuminated keyboard, includes the backlight module as claimed in claim 1 for possessing thin film switch function, wherein：

The light guide plate of the backlight module is between reflectance coating and photomask, and to be used as the first line layer and the of thin film switch The middle interlayer that two line layers formation is electrically isolated, and backlight module is provided with button assembly；

The button assembly is includes bottom plate, multiple push-button units and at least one flexible member, and wherein push-button unit is setting At above the photomask and include keycap and the link mechanism between keycap and bottom plate, and flexible member is arranged at button list , should when the keycap of push-button unit drives link mechanism and pushes flexible member and is held on photomask between member and photomask Second line layer on thin film switch upper strata and the first line layer of reflectance coating lower floor are formed and electrically conducted.

10. the illuminated keyboard as described in claim 9, wherein the backlight module reflectance coating are the poly- carbonic acid of single layer dielectrics material Ester, polyethylene terephthalate or polyester film, and surface is formed with reflecting layer using the ink of white on the reflecting film.

11. it is to include on the first line layer of the illuminated keyboard as described in claim 9, wherein the backlight module reflectance coating Multiple first electrode contacts, and it is provided with light guide plate multiple open-works corresponding to first electrode junction, and the of photomask Two line layers and first line layer are located at symmetric position, and include on the second line layer and connect respectively with open-work and first electrode Point mutually corresponding multiple second electrode contacts.

12. it is to include on the first line layer of the illuminated keyboard as described in claim 9, wherein the backlight module reflectance coating At least one set of conductive junction point, and at least one hole corresponded at conductive junction point is provided with the light incident area of light guide plate, And the light-emitting component of light source is to be electrically connected on the conductive junction point of first line layer, and stretches into corresponding light on light guide plate and enter Penetrate region and in hole.

13. the illuminated keyboard as described in claim 9, the wherein backlight module light-guide plate are the poly- carbonic acid of the guide-lighting material of individual layer Ester or polymethyl methacrylate, and light incident area in light guide plate surface can receive light source projects provided with least one Go out light to be conducted inside light guide plate and guide-lighting shinny hole.

14. it is to include on the second line layer of the illuminated keyboard as described in claim 9, wherein the backlight module photomask At least one set of conductive junction point, and at least one hole corresponded at conductive junction point is provided with the light incident area of light guide plate, And the light-emitting component of light source is to be electrically connected on the conductive junction point of the second line layer, and stretches into corresponding light on light guide plate and enter Penetrate region and in hole.

15. the light-emitting component of the illuminated keyboard as described in claim 9, the wherein light source of backlight module be side it is illuminated or top Type light emitting diode.

16. the bottom plate of the illuminated keyboard as described in claim 9, the wherein button assembly is the reflection for being arranged at backlight module Film lower surface, and sequentially pass through the multiple right of reflectance coating, light guide plate perforation corresponding with photomask provided with upward on backplate surface Socket part, and each docking section is the link mechanism for being articulated in push-button unit respectively.