CN101846772A - Thin film lightguide crossbar switching module - Google Patents

Abstract

The invention relates to a thin film lightguide crossbar switching module which has the characteristics of greatly improved comprehensive properties and low manufacture cost. The thin film lightguide crossbar switching module comprises a CPU circuit controller, a receiving part 17, a row light source 19, a transmitting lightguide 1 and a receiving lightguide 10 and is characterized in that a row transmitting lightguide front end 7 and a line transmitting lightguide front end 32 respectively correspond to the row light source 19 and a line on-off light source 38, a row transmitting lightguide tail end 6 and a line transmitting lightguide tail end 36 form optical switches 18 respectively corresponding to a receiving lightguide front end 15; when the optical switches 18 are pressed, signals sent by the row light source 19 and the line on-off light source 38 are respectively conducted with a light path of a receiving pipe 17a through a row transmitting sub-lightguide 3, a line transmitting sub-lightguide 34, the optical switches 18, the receiving lightguide 10 and the light path of the receiving pipe 17a; and the light path of the receiving pipe 17a outputs a group of characteristic signals corresponding to positions of the optical switches 18 to the CPU circuit controller. The invention has simple structure, reduced number of the photoelectric elements, in addition, the receiving lightguide and the optical switch can be formed on a film, and the invention is applied to the fields of keyboards, electric appliance remote controllers and the like.

Description

Thin film lightguide crossbar switching module

Affiliated technical field

The present invention relates to a kind of thin film lightguide crossbar switching module that is used for keyboard, the input switch module of especially on film, form optical waveguide, photoswitch carrying out the signal transmission.

Background technology

With the computer keyboard is example, uses in the low cost in computer keyboard, all kinds of telepilots field for realizing photoelectric technology, must make led light source propagation efficiency height; Make led light source and photosensitive tube negligible amounts; Make led light source and the photosensitive tube end (on the pcb board that exists together) that exists together, make computer keyboard not have the key bit swiping, known technology adopts mostly at present: every row is provided with inexpensive led light source, the propagation light path that makes led light source is through each key bottom, when button is pressed, the reflecting surface reflected light signal that is connected with button is to photosensitive tube, because light propagation efficiency low-loss in air is bigger, while is because of the scattering of led light source, factors such as reflection, each row is existed crosstalks, the pointing accuracy of key reflecting surface simultaneously made of plastic can't guarantee, can't separate towards computer keyboard bit swiping problem, this technical scheme does not have application prospect, though and employing optical fiber can constrain in light in the photoconduction in communication process, has solved crosstalking of light, the pointing accuracy problem of reflecting surface, but want low-cost, efficient batch process difficulty is very big, its production cost is several times of conventional keyboard, has had a strong impact on promoting the use of of PKB photoelectric keyboard.

Summary of the invention

Technical matters to be solved by this invention provides the low keyboard film lightguide crossbar switching module of a kind of cost of manufacture.

The technical solution adopted for the present invention to solve the technical problems is: comprise cpu circuit controller,acceptance division 17line light sources 19, receiveoptical waveguide 10, it is characterized in that: row transmission lightwaveguide front end 7, row transmission lightwaveguide front end 32 are corresponding withline light source 19, row break-make light source 38 respectively, row transmissionlight waveguide end 6, row transmissionlight waveguide end 36 respectively with receive opticalwaveguide front end 15corresponding formation photoswitches 18; Whenphotoswitch 18 is pressed, the signal thatline light source 19, row break-makelight source 38 send respectively by thesub-optical waveguide 3 of row emission, thesub-optical waveguide 34 of row emission,photoswitch 18, receiveoptical waveguide 10 and receiving tube 17a conducting light paths, receiving tube 17a exports one group of position characteristic of correspondence signal withphotoswitch 18 to the cpu circuit controller.

Further be: row break-makelight source 38 can constitute by asemiconductor light sources 21 andmultichannel photoswitch 22 are corresponding, also can be made of the led light source group; The latter end of the leading portion of rowtransmission light waveguide 33, receptionoptical waveguide 10 arranges and lays respectively at the both sides of allphotoswitches 18 row along the line direction of the photoswitch (18) of embarking on journey; A plurality ofline light sources 19 are between row break-makelight source 38 and receiving tube 17a.

Further be: rowtransmission light waveguide 33 is launchedsub-optical waveguide 34 by the identical row of columns a plurality of andphotoswitch 18 and is formed, the front end of thesub-optical waveguide 34 of row emission all with the unit sub-light source 24-of formation row break-makelight source 38, corresponding.

Further be: row are launchedsub-optical waveguide 34 and are laid respectively at Different Plane by strange, even columns, and the sub-opticalwaveguide front end 32 of row emission is by strange, even corresponding with aunit sub-light source 24 in groups; It is also corresponding with row transmissionlight waveguide end 6, row transmissionlight waveguide terminal 37 in groups by strange, idol to receive opticalwaveguide front end 15, receivesub-optical waveguide end 8 by strange, the receiving tube 17a with different is corresponding respectively in the even number grouping.

The technical solution adopted for the present invention to solve the technical problems is: comprise the cpu circuit controller, receiveoptical waveguide 10,photoswitch 18, it is characterized in that: by rowcharacteristic signal generator 22, corresponding with each capable transmission lightwaveguide front end 7 by being electrically connected theline light source 19 that capable connexonlight source 26 that aunit sub-light source 24 being positioned at different rows forms constitutes respectively; The identicalsub-optical waveguide 3 of emission of each rowlight path photoswitch 18 quantity mutually noninterfere and corresponding line, its front end is corresponding with aunit sub-light source 24 respectively, its end and reception opticalwaveguide front end 15corresponding formation photoswitches 18; When photoswitch 18 closures,unit sub-light source 24 is discerned pressing ofphotoswitch 18 bytransmission light waveguide 1, receptionoptical waveguide 10 and receiving tube 17a conducting light paths with the cpu circuit controller that receiving tube 17a is electrically connected.

Further be:line light source 19 is electrically connected with rowcharacteristic signal generator 27 respectively by row connexonlight source 26 and forms, row connexonlight source 26 is electrically connected byunit sub-light source 24 of theunit sub-light source 24 of delegation and another row and forms, and each road row connexonlight source 26 is controlled by the cpu circuit controller; Multichannel break-make light source 23 can be the led light source group, also bysemiconductor light sources 21 and the 22 corresponding formation of multichannel photoswitch;Unit sub-light source 24 is the sub-light sources that constitute multichannel break-make light source 23.

The technical solution adopted for the present invention to solve the technical problems is: comprise cpu circuit controller,acceptance division 17,line light source 19,transmission light waveguide 1, receiveoptical waveguide 10, it is characterized in that: on film, have thegroove 13 that runs through to run through thefilm cantilever 14 that film forms,cantilever stroke space 2 is arranged for 14 times at the film cantilever by U-shaped like; Lay respectively at thecorresponding formation photoswitch 18 in optical waveguide end atfilm cantilever 14 front edges, 2 edges, cantilever stroke space; When photoswitch 18 is pressed,film cantilever 14 incantilever stroke space 2 to bottom offset to its front end and 2 edges, cantilever stroke space at once,transmission light waveguide 1 and receptionoptical waveguide 10 conducting light paths,line light source 19 respectively bytransmission light waveguide 1,photoswitch 18, receiveoptical waveguide 10 and receiving tube 17a conducting light paths, receiving tube 17a exports one group of position characteristic of correspondence signal withphotoswitch 18 to the cpu circuit controller.

The technical solution adopted for the present invention to solve the technical problems is: comprise cpu circuit controller,acceptance division 17,line light source 19,transmission light waveguide 1, it is characterized in that: an end respectively with the terminal corresponding every row of rowtransmission light waveguide 1 receivebranch waveguide 12, its other end is oblique respectively to be extended upward and is intersected in theintersection 39 corresponding with receivingbare chip 42.

Further be: the have receptionbare chip 42 that by parallel circuit be electrically connected corresponding with the row intersection that receivesbranch waveguide 12 39 of every row is electrically connected with photoelectric switching circuit;Reception film 43 on receivefilm 16 is made of flexible printedboard 41, the receptionbare chip 42 that is connected in parallel on flexible printedboard 41,transparent resin film 44.

Further be: receivefilm 43 by flexible printedboard 41, on flexible printedboard 41, constitute by corresponding receptionbare chip 42, thetransparent resin film 44 that connects of various combination; All negative terminals that receivebare chip 42 all are electrically connected with 5v, it is different with the combination of input1, input2, the corresponding connection of input3 respectively that each receives the anode ofbare chip 42, and input1, input2, input3 are electrically connected with corresponding photoelectric switching circuit respectively.Input port at the cpu circuit controller whenphotoswitch 18 of different lines is pressed produces different codings, and the input port at the cpu circuit controller whenphotoswitch 18 of same column is pressed produces identical coding.

Good effect of the present invention is: have simple in structure, use that photovalve quantity is few, emission receives optical waveguide and photoswitch all forms, soaking and water washing, all keys all do not have the key bit swiping for a long time to be easy to waterproof on plastic sheeting, has high sensitivity and sensitivity not with changing service time, energy adapts to various environment even uses under rugged surroundings, its serviceable life is far above conventional keyboard, and cost is lower than conventional keyboard, is easy to the efficient advantages such as key body character is luminous of producing in batches and can make under the prerequisite that does not increase cost.

The easy oxidation of its switch contact of conventional keyboard, wearing and tearing, its film switch circuit easily produces the fault that patches of loose contact with being connected of master control borad, on-off circuit under the button is huge, the water-proofing treatment difficulty, the key bit swiping fails thoroughly comprehensively to solve, and has thoroughly solved the problems referred to above with the film switch circuit of the thin film lightguide crossbar switching module replacement conventional keyboard of keyboard and the contact switch circuit of telepilot.

After adopting the thin film lightguide crossbar switching module of keyboard, the production technology of keyboard, telepilot etc. is greatly simplified, the production of keyboard becomes working of plastics and the master control borad of producing with mould of plastics, its cost that luminous, comprehensive waterproof of key body character is increased is also very low simultaneously, the photoelectric switching circuit that contains photosensitive tube can be arranged on led light source, same printed board of main control chip on, it is simply compact that it has circuit structure, can take seal approach to a fritter printed board easily, to reach the keyboard integral waterproofing, even the requirement that can in water, use.The thin film lightguide crossbar switching module of this keyboard can be widely used in fields such as computer keyboard, all kinds of household appliance remote control, password input small keyboard, IC Card Telephone keyboard, Automatic Teller Machine keyboard, telephone keypad, functional switch, thin film switch.

Description of drawings

Fig. 1 is the front view that the present invention launches film;

Fig. 2 is the front view that the present invention receives film;

Fig. 3 is emission film of the present invention, the front view that receives the film assembling;

Fig. 4 is the A-A cut-open view of Fig. 3;

Fig. 5 is the synoptic diagram that Fig. 4 photoswitch is depressed;

Fig. 6 is the B partial enlarged drawing of Fig. 3;

Fig. 7 is the C partial enlarged drawing of Fig. 3;

Fig. 8 is the open the light schematic diagram of the multichannel break-make light source formed of semiconductor light sources of the present invention and multichannel light;

Fig. 9 is the another kind of schematic diagram of multichannel break-make light source of the present invention;

Figure 10 is the pie graph of the present invention's row connexon light source;

Figure 11 is the front view of the line light source of characteristic signal generator of the present invention, row connexon light source formation;

Figure 12 is the front view of telepilot emission film of the present invention;

Figure 13 is the front view that telepilot of the present invention receives film;

Figure 14 is the front view that telepilot emission of the present invention receives the film assembling;

Figure 15 is the front view that the present invention has the emission film of row transmission light waveguide;

Figure 16 is that the present invention has the emission film of row transmission light waveguide and the front view of reception film;

Figure 17 is the schematic diagram of line light source of the present invention;

Figure 18 is the front view that computer standard keyboard of the present invention has the emission film of row transmission light waveguide;

Figure 19 is the front view that computer standard keyboard of the present invention receives film;

Figure 20 is the front view that computer standard keyboard emission of the present invention receives the film assembling;

Figure 21 is that computer standard keyboard of the present invention has the emission of capable connexon light source to receive the front view of film assembling;

Figure 22 is the another kind of front view that receives film of the present invention;

Figure 23 is a sealing film receiving circuit of the present invention;

Figure 24 is the another kind of front view that receives the film assembling of the present invention;

Figure 25 is the present invention forms transmission light waveguide on light guiding film a front view;

Figure 26 is that the present invention forms the front view that receives optical waveguide on light guiding film;

Figure 27 is the present invention forms the emission film by cross cutting a front view;

Figure 28 is that the present invention forms the front view that receives film by cross cutting.

Embodiment

As Fig. 1～shown in Figure 23, it is characterized in that: row transmission lightwaveguide front end 7, row transmission lightwaveguide front end 32 are corresponding withline light source 19, row break-makelight source 38 respectively, row transmissionlight waveguide end 6, row transmissionlight waveguide end 36 respectively with receive opticalwaveguide front end 15corresponding formation photoswitches 18; Whenphotoswitch 18 is pressed, the signal thatline light source 19, row break-make light source 38 send respectively by thesub-optical waveguide 3 of row emission, thesub-optical waveguide 34 of row emission,photoswitch 18, receiveoptical waveguide 10 and receiving tube 17a conducting light paths, receiving tube 17a exports one group of position characteristic of correspondence signal withphotoswitch 18 to the cpu circuit controller.

Further be: row break-makelight source 38 can constitute by asemiconductor light sources 21 andmultichannel photoswitch 22 are corresponding, also can be made of the led light source group; The latter end of the leading portion of rowtransmission light waveguide 33, receptionoptical waveguide 10 arranges and lays respectively at the both sides of allphotoswitches 18 row along the line direction of the photoswitch (18) of embarking on journey; A plurality ofline light sources 19 are between row break-makelight source 38 and receiving tube 17a.

Further be: rowtransmission light waveguide 33 is launchedsub-optical waveguide 34 by the identical row of columns a plurality of andphotoswitch 18 and is formed, the front end of thesub-optical waveguide 34 of row emission all with the unit sub-light source 24-of formation row break-makelight source 38, corresponding.

Further be: row are launchedsub-optical waveguide 34 and are laid respectively at Different Plane by strange, even columns, and the sub-opticalwaveguide front end 32 of row emission is by strange, even corresponding with aunit sub-light source 24 in groups; It is also corresponding with row transmissionlight waveguide end 6, row transmissionlight waveguide terminal 37 in groups by strange, idol to receive opticalwaveguide front end 15, receivesub-optical waveguide end 8 by strange, the receiving tube 17a with different is corresponding respectively in the even number grouping.

The technical solution adopted for the present invention to solve the technical problems is: comprise the cpu circuit controller, receiveoptical waveguide 10,photoswitch 18, it is characterized in that: by rowcharacteristic signal generator 22, corresponding with each capable transmission lightwaveguide front end 7 by being electrically connected theline light source 19 that capable connexonlight source 26 that aunit sub-light source 24 being positioned at different rows forms constitutes respectively; The identicalsub-optical waveguide 3 of emission of each rowlight path photoswitch 18 quantity mutually noninterfere and corresponding line, its front end is corresponding with aunit sub-light source 24 respectively, its end and reception opticalwaveguide front end 15corresponding formation photoswitches 18; When photoswitch 18 closures,unit sub-light source 24 is discerned pressing ofphotoswitch 18 bytransmission light waveguide 1, receptionoptical waveguide 10 and receiving tube 17a conducting light paths with the cpu circuit controller that receiving tube 17a is electrically connected.

Further be:line light source 19 is electrically connected with rowcharacteristic signal generator 27 respectively by row connexonlight source 26 and forms, row connexonlight source 26 is electrically connected byunit sub-light source 24 of theunit sub-light source 24 of delegation and another row and forms, and each road row connexonlight source 26 is controlled by the cpu circuit controller; Multichannel break-make light source 23 can be the led light source group, also bysemiconductor light sources 21 and the 22 corresponding formation of multichannel photoswitch;Unit sub-light source 24 is the sub-light sources that constitute multichannel break-make light source 23.

The technical solution adopted for the present invention to solve the technical problems is: comprise cpu circuit controller,acceptance division 17,line light source 19,transmission light waveguide 1, receiveoptical waveguide 10, it is characterized in that: on film, have thegroove 13 that runs through to run through thefilm cantilever 14 that film forms,cantilever stroke space 2 is arranged for 14 times at the film cantilever by U-shaped like; Lay respectively at thecorresponding formation photoswitch 18 in optical waveguide end atfilm cantilever 14 front edges, 2 edges, cantilever stroke space; When photoswitch 18 is pressed,film cantilever 14 incantilever stroke space 2 to bottom offset to its front end and 2 edges, cantilever stroke space at once,transmission light waveguide 1 and receptionoptical waveguide 10 conducting light paths,line light source 19 respectively bytransmission light waveguide 1,photoswitch 18, receiveoptical waveguide 10 and receiving tube 17a conducting light paths, receiving tube 17a exports one group of position characteristic of correspondence signal withphotoswitch 18 to the cpu circuit controller.

The technical solution adopted for the present invention to solve the technical problems is: comprise cpu circuit controller,acceptance division 17,line light source 19,transmission light waveguide 1, it is characterized in that: an end respectively with the terminal corresponding every row of rowtransmission light waveguide 1 receivebranch waveguide 12, its other end is oblique respectively to be extended upward and is intersected in theintersection 39 corresponding with receivingbare chip 42.

Further be: the have receptionbare chip 42 that by parallel circuit be electrically connected corresponding with the row intersection that receivesbranch waveguide 12 39 of every row is electrically connected with photoelectric switching circuit;Reception film 43 on receivefilm 16 is made of flexible printedboard 41, the receptionbare chip 42 that is connected in parallel on flexible printedboard 41,transparent resin film 44.

Further be: receivefilm 43 by flexible printedboard 41, on flexible printedboard 41, constitute by corresponding receptionbare chip 42, thetransparent resin film 44 that connects of various combination; All negative terminals that receivebare chip 42 all are electrically connected with 5v, it is different with the combination of input1, input2, the corresponding connection of input3 respectively that each receives the anode ofbare chip 42, and input1, input2, input3 are electrically connected with corresponding photoelectric switching circuit respectively.Input port at the cpu circuit controller whenphotoswitch 18 of different lines is pressed produces different codings, and the input port at the cpu circuit controller whenphotoswitch 18 of same column is pressed produces identical coding.

Embodiment 1

Fig. 1～Figure 11 is the pie graph of thin film lightguide crossbar switching module of keyboard that adopts 20 key positions of row connexonlight source 26.

Constitute by cpu circuit controller (not shown), theemission film 4 that capabletransmission light waveguide 1 is arranged, thereception film 16 that receptionoptical waveguide 10 is arranged,photoswitch 18,unit sub-light source 24,line light source 19, rowcharacteristic signal generator 22,acceptance division 17 etc. referring to Fig. 1～Figure 11 the present invention.

Referring to the capabletransmission light waveguide 1 of Fig. 1～Fig. 2, receptionoptical waveguide 10 is by adopting specialty printing such as mould transfer technique or plane projection printing and etching technique to form onemission film 4,reception film 16.

Onemission film 4, thecantilever stroke space 2 of arranging in length and breadth and running through film is arranged referring to Fig. 1, the capabletransmission light waveguide 1 of every row constitutes by thesub-optical waveguide 3 of the emission of some mutually noninterferes, it is horizontal and be positioned at 2 belows, cantilever stroke space of every row to launchsub-optical waveguide 3 leading portions, its back segment extends upwardly to receive opticalwaveguide front end 15 corresponding, and leading portion, the back segment of thesub-optical waveguide 1 of row emission connect by slick and sly circular arc 5 light paths.Each is launched sub-opticalwaveguide front end 7 and all is positioned atemission film 4 left part edges, launching sub-opticalwaveguide front end 7 is each row transmission light waveguide front end, row transmissionlight waveguide end 6 is promptly launched sub-optical waveguide end, launch the edge thatsub-optical waveguide end 6 is positioned atcantilever stroke space 2, the quantity of thesub-optical waveguide 3 of the emission of every row is identical withcantilever stroke space 2 quantity.

There is the U-shaped of arranging in length and breadth and running through film to run through groove 13 referring to Fig. 2, receiving on the film 16, film cantilever 14 is to run through groove 13 by forming U shape on reception film 16 to form, receive optical waveguide front end 15 that is receive the front edge that the branch waveguide front end is positioned at film cantilever 14 referring to Fig. 2, Fig. 6, receive optical waveguide end 8 and be positioned at reception film 16 left part edges.Receive film 16 and should adopt the material of good toughness that film cantilever 14 can be born repeatedly in external force, referring to Fig. 4 Fig. 5 under external force film cantilever 14 can produce little displacement (0.15mm-0.25mm), remove after the external force also energy elastic reset.Receiving optical waveguide 10 is made of the straight optical waveguide 9 of reception, reception setting optical waveguide 11, reception branch waveguide 12.It is horizontal and be positioned at and receive film 16 tops to receive straight optical waveguide 9, and receiving straight optical waveguide 9 and can be one the tunnel can be multichannel also, receives when straight optical waveguide 9 is designed to multichannel and can reduce light loss.Reception setting optical waveguide 11 is the setting shape, receives straight optical waveguide 9 and is connected by smooth circular arc light path with each reception setting optical waveguide 11 respectively, receives branch waveguide 12 and is connected with the straight optical waveguide 9 of reception, receipts setting optical waveguide 11 light paths respectively.

Referring to Fig. 3, whenphotoswitch 18 is pressed byemission sub-optical waveguide 3,photoswitch 18, receiveoptical waveguide 10 and constitute light path, be the U-shaped of horizontal, wherein linelight source 19, receiving tube 17a lay respectively near two ends of U-shaped,photoswitch 18 is positioned near the bottom of U-shaped.

Referring to Fig. 3--Fig. 6 will receivefilm 16 and overlay on theemission film 4, should make each thefilm cantilever 14 that receives on thefilm 16 corresponding, constitute 20photoswitches 18 arranging in length and breadth by the reception optical waveguidefront end 15,cantilever stroke space 2, thesub-optical waveguide end 6 of row emission that are positioned on thefilm cantilever 14 with thecantilever stroke space 2 on theemission film 4; Whenfilm cantilever 14 under external force incantilever stroke space 2 when moving to the lower surface ofemission film 4, it is corresponding with row emissionsub-optical waveguide terminal 6 to receive optical waveguidefront end 15, at this moment conducting light paths.

Be installed on the printedpanel 20 referring to Fig. 3, Fig. 7line light source 19, receiving tube 17a, cpu circuit controller (not shown), the sub-optical waveguidefront end 7 of emission at each row all is provided with linelight source 19, it is corresponding with aunit sub-light source 24 respectively that each launches sub-optical waveguidefront end 7, and it is corresponding with receiving tube 17a to receiveoptical waveguide terminal 8.

Acceptance division 17 reaches the photoelectric switching circuit (not shown) that is electrically connected with cpu circuit controller (not shown) by receiving tube 17a and constitutes

Be electrically connected with rowcharacteristic signal generator 22 respectively by rowconnexon light source 26 referring to Fig. 7, Figure 10, Figure 11line light source 19 and form, row connexonlight source 26 is electrically connected byunit sub-light source 24 of theunit sub-light source 24 of delegation and another row and forms, and each road row connexonlight source 26 all is electrically connected with cpu circuit controller (not shown).

Referring to Fig. 9unit sub-light source 24 are the sub-light sources that constitute multichannel break-makelight source 23, and wherein multichannel break-makelight source 23 is led light source groups; The single led light source that unitsub-light source 24 is constitutes ledlight source group 23 by a plurality of led light sources.

Referring to the capablecharacteristic signal generator 27 of Figure 11 are frequency switching triodes, andfrequency switching triode 27 is electrically connected with cpu circuit controller (not shown), controls its break-make by cpu circuit controller (not shown) respectively.

Collector withfrequency switching triode 27 after resistance R of 5V power series is electrically connected, the back anodal in parallel of each single ledlight source 24 is electrically connected with the emitter offrequency switching triode 27, by the base stage control triode break-make of cpu circuit controller (not shown) byfrequency switching triode 27.

Rowconnexon light source 26 is by electric being connected to form of negative pole of negative pole and another single ledlight source 24 of going of a single ledlight source 24 of delegation, after being electrically connected, the negative pole that constitutes the single ledlight source 24 of rowconnexon light source 26 is electrically connected with an input port of cpu circuit controller (not shown) again, by each row a, b, c, the negative pole of each single ledlight source 24 of d and the capable connexonlight source 26 that connects formation should be guaranteed: work as a, b, c, any conducting in d four road row connexonlight sources 26, each row of X1--X5 all has only single ledlight source 24 conductings luminous, and each row has only a branch of light signal incident corresponding line riches all the way penetrates sub-optical waveguidefront end 7.

Rowcharacteristic signal generator 22 can be that the frequency switching triode constitutes, and also can be that other optical modulating circuit constitutes,

Each frequency switching triode of going 27 by the control of cpu circuit controller (not shown) when working referring to Figure 11 produces a characteristic frequency, and the positive pole of all single ledlight sources 24 of the corresponding line that characteristic frequency input is electrically connected with it, make all single ledlight sources 24 of colleague produce a frequecy characteristic that is different from other row, each row characteristic frequency: Y1 capable----Y1 characteristic frequency; Y2 characteristic frequency that Y2 is capable----; Y3 characteristic frequency that Y3 is capable----; Y4 characteristic frequency that Y4 is capable----; Y5 characteristic frequency that Y5 is capable----.

When 26 conductings of one road row connexon light source, the negative pole of the single ledlight source 24 of rowconnexon light source 26 all with the ground conducting, this moment, every row all had a single ledlight source 24 to send light signal with different characteristic frequencies, whenever opened one road row connexon light source, 26 every row and only had only single ledlight source 24 job.

During 26 conductings of X1 connexon light source, the capable connexon light source ofX1 26 is opened the single ledlight source 24 of an X1 that promptly lays respectively at every row and is sent different characteristic frequencies of light signal simultaneously, and the single ledlight source 24 corresponding transmission light waveguide ends 6 of each row and X1 all are positioned at X1 and are listed as;

During 26 conductings of X2 connexon light source, the capable connexon light source ofX2 26 is opened the single ledlight source 24 of an X2 that promptly lays respectively at every row and is sent different characteristic frequencies of light signal simultaneously, and the single ledlight source 24 corresponding transmission light waveguide ends 6 of each row and X2 all are positioned at X2 and are listed as;

During 26 conductings of X3 connexon light source, the capable connexon light source ofX3 26 is opened the single ledlight source 24 of an X3 that promptly lays respectively at every row and is sent different characteristic frequencies of light signal simultaneously, and the single ledlight source 24 corresponding transmission light waveguide ends 6 of each row and X3 all are positioned at X3 and are listed as;

During 26 conductings of X4 connexon light source, the capable connexon light source ofX3 26 is opened the single ledlight source 24 of an X3 that promptly lays respectively at every row and is sent different characteristic frequencies of light signal simultaneously, and the single ledlight source 24 corresponding transmission light waveguide ends 6 of each row and X3 all are positioned at X3 and are listed as,

Cpu circuit controller (not shown) can only be opened road row connexonlight source 26 one by one at every turn, and one road row connexonlight source 26 is constantly opened, closed to cpu circuit controller (not shown) successively.

Concrete scanning testing process is as follows:

Capableconnexon light source 26 conductings of X1----cpu circuit controller (not shown) detects the input port that is electrically connected with receivingtube 17 no signal, and--close the capable connexonlight source 26 of----X2 and open by the capable connexonlight source 26 of X1

Capableconnexon light source 26 conductings of X2----cpu circuit controller (not shown) detects the input port that is electrically connected with receivingtube 17 no signal, and--close the capable connexonlight source 26 of----X3 and open by the capable connexonlight source 26 of X2

Capableconnexon light source 26 conductings of X3----cpu circuit controller (not shown) detects the input port that is electrically connected with receiving tube () no signal

So move in circles and do not stop high-velocity scanning and detect, the time that each scan cycle is about to capable connexonlight source 26 run-downs of X1-X4 much smaller than time that photoswitch 18 is triggered (each switch is triggered time of conducting greater than reaction time of people---be about 0.1 second).

Referring to Fig. 3, Figure 11, whencertain photoswitch 18 is pressed (is example with X2Y2 photoswitch 18), receptionoptical waveguide 10 conducting light paths ofsub-optical waveguide 3 of the emission that Y2 is capable and X2 row, when the circulation high-velocity scanning proceeded to the capable connexon light source ofX2 26 and opens, cpu circuit controller (not shown) detects its input port the input of Y2 characteristic frequency light signal;

The capable connexon light source of X2-26 is opened the single ledlight source 24 of an X2 that promptly lays respectively at every row and is sent different characteristic frequencies of light signal simultaneously, and the single ledlight source 24 corresponding transmission light waveguide ends 6 of each row and X2 all are positioned at X2 and are listed as.Cpu circuit controller (not shown) judges that according to the characteristic light letter-Y2 characteristic frequency of receivingphotoswitch 18 residing behavior Y2 are capable; Cpu circuit controller (not shown) is launched theterminal 6 residing row of sub-optical waveguide according to the single ledlight source 24 corresponding row of Y2 and X2, judges thephotoswitch 18 residing X2 row of classifying as.

Referring to Fig. 3, Figure 11 whenX2Y2 photoswitch 18,X2Y3 photoswitch 18, whenX1Y3 photoswitch 18 is pressed simultaneously, receptionoptical waveguide 10 conducting light paths that Y2 is capable to launchsub-optical waveguide 3 and X2 row; The two-way that Y3 is capable is launched sub-optical waveguide and is receivedoptical waveguide 10, X1 row receptionoptical waveguide 10 conducting light paths with the X2 row respectively.

When the circulation high-velocity scanning proceeds to the capable connexon light source of X2 26 and opens, the capable connexon light source 26 of X2-is opened the single led light source 24 of an X2 that promptly lays respectively at every row and is sent different characteristic frequencies of light signal simultaneously, each row and the single led light source of X2 24 corresponding transmission light waveguide ends 6 all are positioned at X2 and are listed as, when X2Y2 photoswitch 18, when X2Y3 photoswitch 18 is pressed simultaneously, cpu circuit controller (not shown) detects its input port two kinds of characteristic light signal inputs.Cpu circuit controller (not shown) believes according to two kinds of characteristic light--frequecy characteristic after-Y2 characteristic frequency, the stack of Y3 characteristic frequency judges that photoswitch 18 is in respectively that Y2 is capable, Y3 is capable.Judge that according to the sub-optical waveguide of row emission terminal 6 residing row photoswitch 18 is in the X2 row simultaneously.Cpu circuit controller (not shown) is closed the scanning that continues down of the capable connexon light source 26 of X2 simultaneously at storing X 2Y2, X2Y3 coordinate.When the circulation high-velocity scanning proceeded to the capable connexon light source of X1 26 and opens, cpu circuit controller (not shown) detects its input port the input of Y3 characteristic frequency light signal.Cpu circuit controller (not shown) judges that according to the Y3 characteristic frequency of the characteristic light letter of receiving photoswitch 18 residing behavior Y3 are capable.Cpu circuit controller (not shown) is judged the photoswitch 18 residing X1 row of classifying as according to the capable terminal 6 residing row of sub-optical waveguide of launching of Y3 simultaneously.

Because the speed that scanning detects judges that by software detected within a certain period oftime photoswitch 18 is confirmed as pressing simultaneously according to the needs cpu circuit controller (not shown) of Macintosh much larger than the speed that people's response speed andphotoswitch 18 is triggered.All not having the key bit swiping between each photoswitch 18 that this principle of work is produced promptly presses several photoswitch 18CPU circuit controller (not shown)s simultaneously and all can discern.

Embodiment 2

Referring to Fig. 8, Fig. 9 multichannel break-makelight source 23 is by asemiconductor light sources 21 and amultichannel photoswitch 22 corresponding formation;

Unit sub-light source 24 is by switch element that constitutesmultichannel photoswitch 22 andsemiconductor light sources 21 corresponding formation,

Rowconnexon light source 26 is electrically connected by the switch element of the switch element of aunit sub-light source 24 of delegation and an individual unitsub-light source 24 of another row and forms, and row connexonlight source 26 is controlled break-make by cpu circuit controller (not shown).Semiconductorlight sources 21 positive poles of the collector of thefrequency switching triode 27 of each row and each row are electrically connected, and the negative pole of thesemiconductor light sources 21 of each row all is connected with ground.

All the other andimplementation column 1 are together.

Embodiment 3

Figure 12--Figure 14 is the thin film lightguide crossbar switching module of photoelectricity telepilot keyboard.

Referring to Figure 10 is to make compact conformation reduce the quantity of unitsub-light source 24 simultaneously, open the light 18transmission light waveguide 1 of first half beam split is printed on the front of Afilm 28, open the light 18transmission light waveguide 1 of Lower Half beam split is printed on the reverse side of Afilm 28,transmission light waveguide 1 front end of pros and cons is all in Afilm 28 lower edge, thetransmission light waveguide 1 of every row constitutes by thesub-optical waveguide 3 of the row emission of the identical mutually noninterfere of quantity some andphotoswitch 18, launchingsub-optical waveguide 3 leading portions is the setting shape and is positioned atphotoswitch 18 left parts, its back segment is gone up to the right and is extended, and launches the leading portion ofsub-optical waveguide 3, back segment connects by slick and sly circular arc 5.

Be printed on the front ofB film 29 referring to open the light 18 receptionoptical waveguide 10 of Figure 12 first half beam split, open the light 18 receptionoptical waveguide 10 of Lower Half beam split is printed on the reverse side ofB film 29.

Referring to the capable transmission light waveguidefront end 7 of Figure 13line light source 19 is set all, the front end that pros and cons is launchedsub-optical waveguide 3 is all corresponding with aunit sub-light source 24 in groups, and thesub-optical waveguide end 6 of each row emission is positioned at 2 edges, cantilever stroke space.Pros and cons receivesoptical waveguide end 8, and the receivingtube 17 with different is corresponding respectively.

Be electrically connected with rowcharacteristic signal generator 22 respectively by rowconnexon light source 26 referring to Figure 14line light source 19 and form, row connexonlight source 26 is set in the remote control printedboard 30 with rowcharacteristic signal generator 22 respectively, and remote control printedboard 30 is installed in theremote control shell 31.

All the other andimplementation column 1 are together.

Embodiment 4

Figure 15～Figure 17 is the pie graph of thin film lightguide crossbar switching module that adopts a kind of keyboard in 20 key positions of rowtransmission light waveguide 33.

Form by the sub-optical waveguide 3 of numerous row emissions at the capable transmission light waveguide 1 in the front of emission film 4 referring to Figure 15, the sub-optical waveguide 3 of each row emission can be designed to the light path mutually noninterfere, also can be designed to its leading portion light path lumps together, its back segment extends upward, and Figure 15 designs the sub-optical waveguide 3 leading portion light paths of emission of embarking on journey and lumps together.Reverse side at emission film 4 has row transmission light waveguide 33, row transmission light waveguide 33 is that the row of mutually noninterfere are launched sub-optical waveguide 34 and formed by numerous light paths, sub-optical waveguide 34 leading portions of each row emission are horizontal, its back segment is the left part of erectting shape and being positioned at each row cantilever stroke space 2, the leading portion of the sub-optical waveguide 34 of row emission, back segment connects by the slick and sly light path of circular arc, the back segment of the sub-optical waveguide 34 of row emission has the row identical with the quantity of row to divide stand optical waveguide 35, each row divides back segment smooth be connected of stand optical waveguide 35 1 ends with the sub-optical waveguide 34 of row emission, the back segment of the other end and the sub-optical waveguide 34 of row emissions acutangulates and extends upward its end and be positioned at 2 edges, cantilever stroke space and form the sub-optical waveguide end 36 of row emission, the sub-optical waveguide end 36 of row emission i.e. row transmission light waveguide end, and row emission sub-optical waveguide terminal 36 crosses with the sub-optical waveguide end 6 of each row emission in film front.

Promptly be listed as the sub-optical waveguide front end of emission referring to Figure 15, row transmission light waveguidefront end 32, the row break-makelight source 38 corresponding with row transmission light waveguidefront end 32 is installed in the printedboard 20, sub-optical waveguidefront end 32 of row emission and unitsub-light source 24

One, a correspondence.

Being opened the light bysemiconductor light sources 21, multichannel light referring to Fig. 8, row break-makelight source 38 22 constitutes, and unitsub-light source 24 is directly by cpu circuit controller (not shown) control break-make, and unitsub-light source 24 is to constitute open the light 22 the sub-light in unit of multichannel light to open the light.

Referring to Fig. 9, row break-makelight source 38 also can be ledlight source group 22, and unitsub-light source 24 is single led light sources, and row break-makelight source 38 is by cpu circuit controller (not shown) control break-make.

Referring to Figure 17,line light source 19 is to be made ofsemiconductor light sources 25, rowcharacteristic signal generator 22, and rowcharacteristic signal generator 22 is frequency switching triodes.

Thesemiconductor light sources 25 emission characteristic frequencies of light signals that are electrically connected withfrequency switching triode 27 of every row during work, the sub-optical waveguidefront end 7 of corresponding each the row emission of the equal incident of characteristic frequency light signal of each row, make colleague's thesub-optical waveguide 3 of emission propagate the light signal with identical characteristic frequency, thesub-optical waveguide 3 of the emission of different rows is propagated the light signal with characteristic frequency inequality.

Control break-make referring to Fig. 8, Figure 17unit sub-light source 24 by cpu circuit controller (not shown), cpu circuit controller (not shown) can only be opened one roadunit sub-light source 24 at every turn during work, cpu circuit controller (not shown) is constantly according to order unlatching, closingunit sub-light source 24

Concrete scanning testing process is as follows:

Aunit sub-light source 24 is opened the back, and----bunit sub-light source 24 was opened after the input port that cpu circuit controller (not shown) detects and receivingtube 17 is electrically connected had no signal----aunit sub-light source 24 to close

B unitsub-light source 24 is opened the back, and----cunit sub-light source 24 was opened after the input port that cpu circuit controller (not shown) detects and receivingtube 17 is electrically connected had no signal----bunit sub-light source 24 to close

C unitsub-light source 24 is opened the back, and----cpu circuit controller (not shown) detects the input port that is electrically connected with receivingtube 17 has no signal----to close cunit sub-light source 24

So move in circles and do not stop scanning detection a-b-c-d-a-b-c

When photoswitch 18 is pressed,film cantilever 14 overcomes cantilever elastic force under external force, in 2 spatial dimensions of cantilever stroke space, move down the reception optical waveguidefront end 15 to filmcantilever 14 and row transmissionlight waveguide end 6, conducting light paths when terminal 36 intersections of the sub-optical waveguide of row emission are corresponding.

The light signal that linelight source 19, column unitsub-light source 24 send receivesoptical waveguide 10 and receivingtube 17 conducting light paths accordingly by rowtransmission light waveguide 1,sub-optical waveguide 34 incidents of row emission respectively.

Cpu circuit controller (not shown) is according to the capable characteristic frequency that receives,unit sub-light source 24 and be listed as the position that the corresponding relation of launchingsub-optical waveguide 34 is judged thephotoswitch 18 that is pressed.After removing by the external force ofphotoswitch 18, branch'scantilever 14 is reposition under the elastic force effect.

All the other andimplementation column 1 are together.

Embodiment 5

Figure 18～Figure 20 is the pie graph that adopts the thin film lightguide crossbar switching module of a kind of keyboard in computing machine 104 key positions that is listed as thesub-optical waveguide 34 of emission.

Work asphotoswitch 18 quantity more for a long time referring to Figure 21, have 22 row as computer standard keyboard, as follow and arrange thesub-optical waveguide 34 of row emission, the take up space of arranging sub-photoconduction uses during than Datong District the quantity of unitsub-light source 24 to reach 22, launch the quantity thatsub-optical waveguide 34 reduces unitsub-light source 24 simultaneously for more convenient arrangement, can take thesub-optical waveguide 34 of row emission is respectively arranged 11 at the pros and cons of film.Row are launchedsub-optical waveguide 34 and are laid respectively at Different Plane by strange, even columns, and the sub-optical waveguidefront end 32 of row emission is by strange, even corresponding with aunit sub-light source 24 in groups; It is also corresponding with row transmissionlight waveguide end 6, row transmissionlight waveguide terminal 37 in groups by strange, idol to receive optical waveguidefront end 15, receivessub-optical waveguide end 8 and is divided into two groups by strange, even number the receivingtube 17 with different is corresponding respectively.

All the other andimplementation column 1 are together.

Embodiment 6

Figure 21 is a kind of pie graph of thin film lightguide crossbar switching module of keyboard that adopts the computing machine 104 key positions of rowconnexon light source 26.

Work asphotoswitch 18 quantity more for a long time referring to Figure 21, have 22 row as computer standard keyboard, as it is not enough to follow the space of arranging the sub-photoconduction ofsub-optical waveguide 3 arrangements of emission, for the quantity thatsub-optical waveguide 3 reduces theunit sub-light source 24 that constitutes rowconnexon light source 26 is simultaneously launched in more convenient arrangement, thesub-optical waveguide 3 of emission can be arranged to be each 11 of pros and cons atemission film 4 pros and cons.

To illustrate the reverse side that 11sub-optical waveguides 3 of emission of left-half are arranged onemission film 4 referring to Figure 21,11sub-optical waveguides 3 of emission of remaining right half part are arranged on the front ofemission film 4.

Should make the sub-optical waveguide front end of the paired emission of the unit sub-light source of every row (24) that constitutes rowconnexon light source 26 and the pros and cons ofcorresponding line 7 corresponding, it is still corresponding with the sub-optical waveguide front end ofdifferent receptions 8 that each launchessub-optical waveguide end 6;

Should make the receptionsub-optical waveguide terminal 8 corresponding corresponding with a receivingtube 17 with the sub-optical waveguide of the emission that illustrates 11 reverse side of left-half terminal 6;

Should make the receptionsub-optical waveguide terminal 8 corresponding corresponding with another receivingtube 17 with the sub-optical waveguide of the emission that illustrates 11 fronts of righthalf part terminal 6.

All the other andimplementation column 1 are together.

Embodiment 7 Figure 22～Figure 25 is the pie graph of the thin film lightguide crossbar switching module of the another kind of keyboard in 104 key positions.Thereby this scheme is intended to shorten the transmission range of light in optical waveguide reduces light loss.

Corresponding with row transmissionlight waveguide terminal 6 referring to Figure 22, Figure 25 at an end that respectively receivesbranch waveguide 12 that receives on thefilm 16, the equal Dou of its other end extends upward, and thebranch waveguide 12 that receives of every row extends upward and is intersected in theintersection 39 corresponding with receivingbare chip 42 that receives throughhole 40 edges.

Referring to Figure 23, corresponding with row transmissionlight waveguide terminal 6 at an end that respectively receivesbranch waveguide 12 that receives on thefilm 16, the equal Dou of its other end extends upward, receive two row infilm 16 fronts or three row and receive branchsoptical waveguide 12 and be intersected in theintersection 39 corresponding that receives throughhole 40 edges, theintersection 39 corresponding that receives that two row offilm 16 reverse side or three row receive that branchsoptical waveguide 12 is intersected in reception throughhole 40 edges with receptionbare chip 42 with receivingbare chip 42.

Be positioned at referring to Figure 24 that thereception film 43 that receives above thefilm 16 receivesbare chip 42 by flexible printedboard 41, the i that is connected in parallel on flexible printedboard 41 and the ii that is connected in parallel receivesbare chip 42,transparent resin film 44 constitutes.

Have 22 row as computer standard keyboard,

Be electrically connected with a photoelectric switching circuit (not shown) after wherein 11 i receivebare chip 42 parallel connections, photoelectric switching circuit (not shown) and cpu circuit controller (not shown) are electrically connected, be electrically connected with a photoelectric switching circuit (not shown) after wherein 11 ii receivebare chip 42 parallel connections, the photoelectric switching circuit (not shown) is electrically connected with cpu circuit controller (not shown) again.The ii receptionbare chip 42 that the i of 11 parallel connections receivesbare chip 42 and 11 parallel connections is equivalent to two receiving tubes respectively.

After i receivedbare chip 42, ii and receivebare chip 42 and be welded on the flexible printedboard 41 respectively, formtransparent resin film 44 with the transparent sealing resin again and cover P.e.c. and chip, be formed with theacceptance division 17 of the receiving circuit in parallel oftransparent resin film 44 at the printing face of flexible printedboard 41.

To receive on theemission film 4 thatfilm 16 overlays Figure 18 referring to Figure 18, Figure 22, Figure 23, Figure 24, Figure 25, and the flexible printedboard 41 that assembles will be placed on receive on thefilm 16 again.

Should make the transparent lamina ofacceptance division 17 corresponding during assembling withreception film 16; Should make theintersection 39 at reception throughhole 40 edges that are positioned at allreception branch waveguides 12 that receivefilm 16 fronts corresponding with i receptionbare chip 42; Being positioned at all that receivefilm 16 reverse side, to receive theintersection 39 at reception throughhole 40 edges ofbranch waveguides 12 corresponding with ii receptionbare chip 42.

Parallel circuit referring to Figure 24 flexible printedboard 41 connects plug-inunit 44 and printedpanel 20 electrical communication.

During work whenphotoswitch 18 is not pressed, its resistance was very not big when all receiving chips in parallel received light signal, when somephotoswitches 18 are pressed, its resistance descended rapidly when the receiving chip of some parallel connections received light signal, the resistance in whole simply connected loop is descended rapidly, the photocurrent of this shunt circuit increases exponentially, and the cpu circuit controller (not shown) that is electrically connected with the shunt circuit has detected the light signal input.

All the other andimplementation column 1 are together.

Embodiment 8

Referring to Figure 26, all receivebranch waveguides 12 in theintersection 39 that receives throughhole 40 edges with to receivebare chip 42 corresponding, the leading portion, back segment of launchingsub-optical waveguide 3 are by slick and sly circular arc 5 connections; Theemission sub-optical waveguide 3 identical withphotoswitch 18 quantity of every row is that its leading portion is a whole light path, and slick and sly circular arc 5, back segment are light paths independent of each other.The negative terminal that can adopt all to receivebare chip 42 all is electrically connected with 5v, it is different with the combination of input1, input2, the corresponding connection of input3 respectively that each receives the anode ofbare chip 42, and input1, input2, input3 are electrically connected with three groups of photoelectric switching circuit (not shown)s respectively.Input port at cpu circuit controller (not shown) when thephotoswitch 18 of different lines is pressed produces different codings, and the input port at cpu circuit controller (not shown) when thephotoswitch 18 of same column is pressed produces identical coding.

Key referring to Figure 26, x1-x6 row

x1 x2 x3 x4 x5 x6

001?010?100?101?110?111

The software scans that respectively worked is distinguished

All the other andimplementation column 1 are together.

Embodiment 9

Figure 27～Figure 28 is the pie graph of the thin film lightguide crossbar switching module of the another kind of keyboard in 20 key positions.

Launchingsub-optical waveguide 3 referring to Figure 26 is to run throughgroove 45 by moulding onemission film 4 toform.Emission film 4 adopts the membraneous material of high printing opacity, low light loss, onemission film 4 thecantilever stroke space 2 of arranging in length and breadth and running through film is arranged, and running throughgroove 45 can form by cross cutting or Laser Processing.

Receivingoptical waveguide 10 referring to Figure 28 is to run throughgroove 46 formation by receiving in 16 processing of reception film.Onreception film 16, there is the U-shaped of arranging in length and breadth and running through film to run throughgroove 13, reception optical waveguidefront end 15,film cantilever 14 are to run throughgroove 13 by forming U shape onreception film 16 to form, should make the type U-shaped run throughgroove 13 and receive and run through thatgroove 46 is communicated with and to guarantee to receive the continuous edge ofoptical waveguide 10 smooth, it is corresponding with receivingtube 17 to receive optical waveguide terminal 8.All the other andimplementation column 1 are together.

Claims (10)

1. the thin film lightguide crossbar switching module of a kind of keyboard of the present invention, comprise cpu circuit controller, acceptance division (17) line light source (19), receive optical waveguide (10), it is characterized in that: row transmission light waveguide front end (7), row transmission light waveguide front end (32) are corresponding with line light source (19), row break-make light source (38) respectively, row transmission light waveguide end (6), row transmission light waveguide end (36) respectively with receive optical waveguide front end (15) corresponding formation photoswitch (18); When photoswitch (18) when pressing, the signal that line light source (19), row break-make light source (38) send respectively by row emission sub-optical waveguide (3), row emission sub-optical waveguide (34), photoswitch (18), receive optical waveguide (10) and receiving tube (17a) conducting light paths, receiving tube (17a) is exported one group of position characteristic of correspondence signal with photoswitch (18) to the cpu circuit controller.

2. thin film lightguide crossbar switching module as claimed in claim 1 is characterized in that: row break-make light source (38) can also can be made of the led light source group a semiconductor light sources (21) and the corresponding formation of multichannel photoswitch (22); The latter end of the leading portion of row transmission light waveguide (33), reception optical waveguide (10) arranges and lays respectively at the both sides of all photoswitches (18) row along the line direction of the photoswitch (18) of embarking on journey; A plurality of line light sources (19) are positioned between row break-make light source (38) and the receiving tube (17a).

3. thin film lightguide crossbar switching module as claimed in claim 1 or 2, it is characterized in that: row transmission light waveguide (33) is launched sub-optical waveguide (34) by the identical row of columns a plurality of and photoswitch (18) and is formed, and the front end of the row optical waveguides of emission (34) all unit sub-light source (24), with formation row break-make light sources (38) is corresponding.

4. thin film lightguide crossbar switching module as claimed in claim 1 or 2, it is characterized in that: row are launched sub-optical waveguides (34) and are laid respectively at Different Plane by strange, even columns, and the row optical waveguide front ends of emission (32) are by strange, even corresponding with a unit sub-light source (24) in groups; It is also corresponding with row transmission light waveguide end (6), row transmission light waveguide end (37) in groups by strange, idol to receive optical waveguide front end (15), receive sub-optical waveguide end (8) by strange, the receiving tube (17a) with different is corresponding respectively in the even number grouping.

5. the thin film lightguide crossbar switching module of a kind of keyboard of the present invention, comprise the cpu circuit controller, receive optical waveguide (10), photoswitch (18), it is characterized in that: corresponding with each capable transmission light waveguide front end (7) by row characteristic signal generator (22), line light source (19) by being electrically connected capable connexon light source (26) formation that the unit sub-light source (24) that is positioned at different rows forms respectively; Each row light path emission sub-optical waveguide (3) identical mutually noninterfere with photoswitch corresponding line (18) quantity, its front end is corresponding with a unit sub-light source (24) respectively, its end and reception optical waveguide front end (15) corresponding formation photoswitch (18); When photoswitch (18) was closed, unit sub-light source (24) was discerned pressing of photoswitch (18) by transmission light waveguide (1), reception optical waveguide (10) and receiving tube (17a) conducting light paths with the cpu circuit controller that receiving tube (17a) is electrically connected.

6. thin film lightguide crossbar switching module as claimed in claim 5, it is characterized in that: line light source (19) is electrically connected with row characteristic signal generator (27) respectively by row connexon light source (26) and forms, row connexon light source (26) is electrically connected by unit sub-light source (24) of the unit sub-light source (24) of delegation and another row and forms, and each road row connexon light source (26) is controlled by the cpu circuit controller; Multichannel break-make light source (23) can be the led light source group, also by semiconductor light sources (21) and the corresponding formation of multichannel photoswitch (22); Unit sub-light source (24) is the sub-light source that constitutes multichannel break-make light source (23).

7. the thin film lightguide crossbar switching module of a kind of keyboard of the present invention, comprise cpu circuit controller, acceptance division (17), line light source (19), transmission light waveguide (1), receive optical waveguide (10), it is characterized in that: on film, have the groove (13) that runs through to run through the film cantilever (14) that film forms, cantilever stroke space (2) is arranged under film cantilever (14) by U-shaped like; Lay respectively at the corresponding formation photoswitch in optical waveguide end (18) at film cantilever (14) front edge, edge, cantilever stroke space (2); When photoswitch (18) when pressing, film cantilever (14) in cantilever stroke space (2) to bottom offset to its front end and edge, cantilever stroke space (2) at once, transmission light waveguide (1) and reception optical waveguide (10) conducting light paths, line light source (19) respectively by transmission light waveguide (1), photoswitch (18), receive optical waveguide (10) and receiving tube (17a) conducting light paths, receiving tube (17a) is exported one group of position characteristic of correspondence signal with photoswitch (18) to the cpu circuit controller.

8. the thin film lightguide crossbar switching module of a kind of keyboard of the present invention, comprise cpu circuit controller, acceptance division (17), line light source (19), transmission light waveguide (1), it is characterized in that: an end respectively with the terminal corresponding every row of row transmission light waveguide (1) receive branch waveguide (12), oblique respectively the extending upward of its other end is intersected in the intersection (39) corresponding with receiving bare chip (42).

9. thin film lightguide crossbar switching module as claimed in claim 8 is characterized in that: the have reception bare chip (42) that by parallel circuit be electrically connected corresponding with the row intersection (39) that receives branch waveguide (12) of every row is electrically connected with photoelectric switching circuit; Reception film (43) on receive film (16) is made of flexible printed board (41), the reception bare chip (42) that is connected in parallel on flexible printed board (41), transparent resin film (44).

10. thin film lightguide crossbar switching module as claimed in claim 8 or 9 is characterized in that: receive film (43) and go up by flexible printed board (41), at flexible printed board (41) and press the corresponding reception bare chip (42) that connects of various combination, transparent resin film (44) formation; All negative terminals that receive bare chip (42) all are electrically connected with 5v, it is different with the combination of input1, input2, the corresponding connection of input3 respectively that each receives the anode of bare chip (42), and input1, input2, input3 are electrically connected with corresponding photoelectric switching circuit respectively.Make the photoswitch (18) of different lines produce different codings in the input port at the cpu circuit controller when pressing, the photoswitch of same column (18) produces identical coding in the input port at the cpu circuit controller when pressing.

Images