Background technology
At present, in the epoch of this scientific and technological progress, electronic product has brought one of people environment easily, yet, most Introduced cases electronic product all needs button to carry out literal, the input of numeral or instruction, as mouse, keyboard or the rocking bar that recreation was suitable for, light gun etc., but along with making rapid progress of product, button also needs to come change at different demands, for example from the employed button of the keyboard of early stage desktop computer to the employed button of notebook computer, its difference is just suitable big, what emphasize because of notebook computer is light, thin, short, little, so its employed button just can't be as the keyboard of desktop computer, and the characteristic that must meet above-mentioned notebook computer is come change.
Moreover, button as mobile phone originally can't be luminous, but people can use mobile phone at rather dark place, but can't be pressed into required button accurately this moment, be so that there is manufacturer to propose improvement at this problem, make button can send light source to be convenient for people to use, see also shown in Figure 13, this illuminated keyboard is for being provided with keypad portion A, back lighting device B, its keypad portion A is for being provided with circuit board A2 above base plate A1, and circuit board A2 is provided with the light-emitting component A21 of transmitting illuminant down, and above circuit board A2, be provided with plastic film A3 with flexible member A31, and base plate A1 is connected with button A5 up through connect mechanism A4, is provided with the light guide plate B1 of back lighting device B again below the base plate A1 of keypad portion A, and light guide plate B1 below is provided with reflecting plate B2 again.
The light-emitting component A21 of this circuit board A2 is transmitting illuminant down, light source passes the light guide plate B1 that is radiated at back lighting device B behind the base plate A1, and light guide plate B1 is to reflecting plate B2 with light source projects, after utilizing reflecting plate B2 reflection source, pass light guide plate B1 and keypad portion A more in regular turn, making the button A5 at keypad portion A top have light manifests, but because of the group constitutive element part of keypad portion A and back lighting device B many, thickness after then causing keypad portion A and back lighting device B combining increases, when using, reality still has many disappearances, as:
(1) the light-emitting component A21 of circuit board A2 is after downward transmitting illuminant, through reflection, refraction repeatedly, just light is projected to button A5 place at last, yet after light source is through reflection repeatedly, to cause mixing and the brightness of the light source that detracts, causing the loss of luminous energy of light, it is also relatively poor that the light at button A5 place manifests effect.
(2) keypad portion A adds that the thickness behind the back lighting device B increases, and can't be suitable for, meet light, thin, short, the little design requirement of electronic installation, will cause the keyboard thickness of electronic installation also can thicken along with increasing of element.
(3) the base plate A1 of keypad portion A is provided with a plurality of axle beds, and each axle bed need pass circuit board A2 and just can assemble for connect mechanism A4, cause to be provided with a plurality of perforation thoroughly on the circuit board A2, then the locus that configuration can be set reduces in a large number, design and make comparatively difficult, consuming time and take a lot of work.
(4) if be provided with a plurality of films in the circuit board A2 of keypad portion A, and power supply circuits, signal circuit be set respectively on the different surfaces of film, though can be used to solve the disappearance of insufficient space, but need repeatedly process because of a plurality of films multiple circuit is set, cause manufacturing cost greatly to go up.
Therefore, above-mentioned commonly using in the employed circuit board of illuminated keyboard, because of having problems and disappearance, this is the inventor and the target place of being engaged in this journey improvement that the dealer desires most ardently.
Embodiment
Now be described as follows in detail with regard to preferred embodiment of the present invention in conjunction with the accompanying drawings, to understand the technology used in the present invention means and structure thereof fully.
See also Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, be three-dimensional exploded view of the present invention, side-looking sectional exploded view, side cutaway view, stereo appearance figure, find out that by knowing among the figure its circuit board structure capable of self-illumination includes circuit board 1 at least, line layer 2 is formed; Wherein:
This circuit board 1 has the substrate 11,12 that two relative formula layered laminate are provided with, and two substrates 11,12 can be transparent, translucent material and make, and in the following laminar substrate 12, be provided with more than one illuminating part 121, following laminar substrate 12 is provided with more than one light guide section 122, and be provided with dielectric isolation layer 101 at 11,12 of the substrates of two relative formulas, can be formed with interblock space 10 11,12 of two substrates.
This line layer 2 can be flexible circuit board, and it is inner for having the signal of being arranged to preset with silver slurry layer, the circuit of power supply, be combined into configuration again, can effectively reduce the thickness of line layer 2, make line layer 2 present thin size, and be provided with the connecting portion 21 that extends to line layer 2 outsides by configuration one example.
Above-mentioned each member is when assembling, be substrate 11 with circuit board 1,12 interblock space 10 is for taking in line layer 2 and being located, and can utilize dielectric isolation layer 101 to be isolated, and the configuration with line layer 2 inside is electrically connected at two substrates 11 respectively, 12 and each illuminating part 121, promptly being combined into the present invention can self luminous circuit board 1, for the connecting portion 21 with line layer 2 is electrically connected at outside default power supply source, and by the configuration of line layer 2 and two substrates 11 of circuit board 1,12 and illuminating part 121 electrically conduct, the power circuit of this illuminating part 121 then can be along the configuration of line layer 2, and the connecting portion 21 that extends to line layer 2 outsides (is please consulted Fig. 9 simultaneously, Figure 11, shown in Figure 12); And the power line of illuminating part 121 also can extend circuit board 1 outside separately, be positioned at the side of the connecting portion 21 of line layer 2, direct and external power source electrically connects, then can be by line layer 2 for illuminating part 121, be lateral direction light emission in the laminar substrate 12 down, and light source can be concentrated each light guide section 122 place of throwing in the substrate 12, and through the evenly outwards projection of light guide section 122 guiding light sources, and illuminating part 121 enters in the substrate 12 for being lateral direction light emission, can make light more concentrated, and be difficult for toward peripheral scattering, then supply light source by light guide section 122 places, directing light outwards throws through top substrate layer 11 uniformly, luminous efficacy that can gain circuitry plate 1, and have good luminosity, and group constitutes the structure of circuit board 1 of the present invention.
And the stacked substrate 11,12 of two relative formulas of aforesaid circuit board 1, and can have the different gauge of thickness, be thinner than down the gauge (also can make top substrate layer 11 thickness be slightly thicker than down the thickness of laminar substrate 12) of laminar substrate 12 with top substrate layer 11 gauges, and substrate 11,12 to can be Merlon (PC), PETG (PET), polymethyl methacrylate (PMMA) or other flexible materials with light conductivity made; And 11,12 set isolated insulation layers 101 of two substrates, it is made to can be transparent or semitransparent material, can be for the light transmission of illuminating part 121.
As for above-mentioned line layer 2, can be the Flexible Printed Circuit that soft materials is made, and Flexible Printed Circuit can be the wiring board of two different configurations, utilize conducting resinl to give the bonding line layer 2 that is combined into; And Flexible Printed Circuit also can be uniline template formula, and two sides are provided with different configurations, side wiring board turnover is incorporated on other the side wiring board, and it is bonding to utilize conducting resinl to give, and also may be molded to line layer 2 again.
See also Fig. 1, Fig. 2, Fig. 5, shown in Figure 6, be three-dimensional exploded view of the present invention, the side-looking sectional exploded view, the three-dimensional exploded view of preferred embodiment, the side cutaway view of another embodiment, find out by knowing among the figure, this circuit board can be provided with base plate 4 and reflector 42 for 1 time, and base plate 4 outer peripheral edges utilizations sidewall 41 up, make inside be formed with accommodation space 40, and be provided with location division 411 in contiguous accommodation spaces 40 1 sides of sidewall 41, just can be with circuit board 1, line layer 2, location-plate 13 and press element 15, be installed in respectively in the accommodation space 40 of base plate 4 and be positioned at 42 tops, reflector, and the location division 411 with base plate 4 is fixing with the location-plate 13 of circuit board 1, just can finish circuit board 1, the assembling of press element 15 and base plate 4, the light that the illuminating part 121 in the substrate 12 can be produced, upwards reflex to circuit board 1 by reflector 42, it is luminous to promote circuit board 1, bright apparent effectiveness, also can avoid circuit board 1, line layer 2 and location-plate 13 produce and come off, damage, and then can make things convenient for finished product to deposit, carrying.
The substrate 11 of this circuit board 1,12, line layer 2 is because of being arranged at location-plate 13 belows, make circuit board 1, line layer 2 does not need to establish the too much slotted eye that runs through, even then reduce circuit board 1 because of running through slotted eye, the usable floor area of line layer 2 increases, be provided with for configuration but have than large tracts of land on power circuit board 1 and the line layer 2, just can avoid because of circuit board 1 and line layer 2 spaces limited, and configuration need take more space, make that configuration must the careful disappearance of calculating, institute causes consuming time, consumption worker and manufacture difficulty promote, do not need configuration is arranged at two substrates 11 yet, 12 different surfaces, and isolated by dielectric isolation layer 101, and then can promote circuit board 1, line layer 2 is in design, convenience in the making, and increase the bright apparent effect of leaded light.
Above-mentioned press element 15 is located at each light guide section 122 top relatively, it is made to can be transparent or semitransparent material, and press element 15 can be keycap, thin plate or other patterns, its press element 15 can be at the local coating of upper surface enamelled coating, make uncoated enamelled coating place be formed with can be shinny pattern, literal, or behind press element 15 upper surfaces coating enamelled coating, again with the laser engraving mode form can be shinny pattern, literal, it only has the user behind press element 15, can press the line layer 2 that is positioned at dielectric isolation layer 101 2 sides in circuit board 1 interblock space 10 by flexible member 3, send corresponding signal by line layer 2, and press element 15 is positioned at light guide section 122 tops, after pushing, can utilize the reseting elasticity of flexible member 3, press element 15 is automatically reset, and press element 15 have and can expose to outside function for internal light source and get final product, non-so promptly limit to claim of the present invention, as utilize other modifications and equivalent structure to change, all should in like manner be contained in the claim of the present invention.
See also Fig. 3, Fig. 6, Fig. 7, shown in Figure 8, be the side cutaway view of side cutaway view of the present invention, another embodiment, the side cutaway view, the side cutaway view of another embodiment of an embodiment again, find out circuit board 1 of the present invention by knowing among the figure, at set at least more than one the light guide section 122 of following laminar substrate 12, then can be a plurality of salient points, waveform continuous curve surface, v-depression, light guide ink or other can be concentrated the light guide structure of light continuously; And this circuit board 1 can be provided with more than one light guide section 122 at the upper surface (or lower surface) of following laminar substrate 12, and the also plastic upper surface of this light guide section 122 (or lower surface) in top substrate layer 11, the gauge of top substrate layer 11, be the gauge that is slightly thinner than down laminar substrate 12 (also can make the thickness of top substrate layer 11 be thicker than down the thickness of laminar substrate 12), then by in the following laminar substrate 12 of thicker (or thinner), be provided with at least more than one illuminating part 121, the illuminating part 121 that at least more than one also can be arranged in top substrate layer 11 inside, can utilize at least more than one illuminating part 121 to be projected to top substrate layer 11 with light, following laminar substrate 12, and reflexed to each press element 15 below by each light guide section 122.
Moreover, this circuit board 1 is provided with location-plate 13 in top substrate layer 11 tops, and on location-plate 13, be respectively equipped with centre bore 130, a plurality of docking section 131, and each docking section 131 is hubbed at the axial region 141 of linkage 14 respectively, and in the axial region 141 of each linkage 14 other side, be hubbed at each docking section 151 of a plurality of press elements 15 bottom surfaces more respectively, set a plurality of press elements 15 on the circuit board 1 then can be keycap, sheet metal or other can be for the button of pushing, touching; Again, top substrate layer 11 surfaces of circuit board 1 can be provided with flexible member 3, and flexible member 3 tops are corresponding to a plurality of press elements 15 bottoms, pushing the back for each press element 15 shores and can automatically reset by each flexible member 3 elastic restoring force, and the linkage 14 that a plurality of press elements 15 bottoms are set respectively, can shore then that press element 15 unlikelyly when being subjected to pressed by external force is toppled over, crooked or blocking, after cooperating each flexible member 3 to push, can reset fast for each press element 15.
And the set flexible member 3 in circuit board 1 top, for holding respectively below a plurality of press elements 15, when a plurality of press elements 15 are pushed downwards by external force respectively, promptly push each flexible member 3 with each press element 15, make each flexible member 3 press the configuration of the corresponding line layer 2 in conducting bottom, because of line layer 2 belongs to slim, can't be at two substrates 11 of circuit board 1,12 interblock space 10 takies too many position, and can effectively reduce the dimensional thickness of circuit board 1, then being subjected to press element 15 at line layer 2 compresses pressing of flexible member 3 and does the time spent, configuration is able to really by isolated insulation layer 101, touch conducting and be subjected to pushing forming, and then produce signal to external transmission, and after the external force on each press element 15 is removed, promptly shoring each press element 15 through each flexible member 3 elasticity resets fast, and on location-plate 13, be provided with a plurality of shielding portions 132, and each shielding portion 132 is located at the adjacent interstitial site bottom of each press element 15 respectively relatively, and shielding portion 132 is blocked really above top substrate layer 11, to stop the light source of each illuminating part 121, avoid making light source outwards to throw by the gap that produces between the adjacent press element 15, can prevent that the light source that 121 projections of each illuminating part are gone in the circuit board 1 from leaking, and can concentrate and be projected to press element 15 bottoms.
See also Fig. 3, Fig. 9, Figure 10, Figure 11, shown in Figure 12, be side cutaway view of the present invention, the luminance vertical view of illuminating part, the partial enlarged drawing of illuminating part, the another kind of luminance vertical view of illuminating part, another luminance vertical view of illuminating part, find out by knowing among the figure, a plurality of illuminating parts 121 in the circuit board 1 of the present invention, for adopting surface adhesion type (SMT) light-emitting diode (LED) with vertical type, towards equidirectional or arrange to be provided with towards different directions respectively, make a plurality of illuminating parts 121 can be unidirection luminous or two-way luminous, and circuit board 1 inside is had fully, uniform light; And a plurality of illuminating parts 121 also can be adopted alternating expression and towards the mode that different directions is arranged, make a plurality of illuminating parts 121 can throw the mode of light in the opposite direction, and light is dropped in the circuit board 1, make the circuit board 1 can sufficient luminous demonstration.
The circuit board structure capable of self-illumination of the invention described above has following advantage when reality is used, as:
(1) but in the following laminar substrate 12 of circuit board 1 vertical types more than one illuminating part 121 is set, and with each illuminating part 121 respectively lateral direction light emission throw into circuit board 1, it is unlikely toward peripheral scattering that light source is concentrated, and need not can avoid the light-source brightness impairment through refraction, to promote the effect of circuit board 1 luminous efficiency, light demonstration.
(2) in existing circuit board 1, line layer 2 is set, and illuminating part 121 is set with vertical type in the interlayer mode, the thickness of unlikely increase circuit board 1, and power circuit board 1 can meet light, thin, short, the little design concept of electronic product, for being used.
(3) circuit board 1 inside is provided with line layer 2, the required configuration of circuit board 1 can effectively be set, and can reduce on the circuit board 1 to be provided with and run through slotted eye, also unlikely configuration limit or the minimizing that influences on the line layer 2 makes circuit board 1 still can meet the demand of electronic product line design.
(4) circuit board 1 and inner line layer 2, and only utilize the setting of an above vertical type illuminating part 121, can process assembling fast and fit, do not need repeatedly repeat to process operation, can reduce man-hour, the manpower of making, and increase the effect that circuit board 1 light manifests.
So; the present invention is for being primarily aimed at circuit board structure capable of self-illumination; and line layer 2 can be set at 11,12 of two substrates of circuit board 1; and electrically connect the illuminating part 121 that is positioned at substrate 12 with line layer 2; this illuminating part 121 is adopted vertical type at least more than one and is arranged in the substrate 12, and can make illuminating part 121 be the lateral direction light emission mode, and light source projects is gone into to be main key protection point in the circuit board 1; and can concentrate the projecting direction of light source, reduce light source causes situation from the light impairment to peripheral scattering.
Above embodiment only is preferred embodiment of the present invention, and it is illustrative for the purpose of the present invention, and nonrestrictive.Those skilled in the art carries out conversion, modification even equivalence to it under the situation that does not exceed spirit and scope of the invention, these changes all can fall into claim protection range of the present invention.