CN1917113B - Sheet switch, sheet switch module and panel switch - Google Patents
Sheet switch, sheet switch module and panel switch Download PDFInfo
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- CN1917113B CN1917113B CN2006101159538A CN200610115953A CN1917113B CN 1917113 B CN1917113 B CN 1917113B CN 2006101159538 A CN2006101159538 A CN 2006101159538A CN 200610115953 A CN200610115953 A CN 200610115953A CN 1917113 B CN1917113 B CN 1917113B
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Abstract
A sheet switch module including a sheet switch having at least one central contact disposed on a circuit board, at least one circumferential contact disposed circumferentially of the central contact, at least one spring disposed above the central contact, and a transparent sheet member configured to cover the spring, the sheet switch forming a switching circuit such that the spring provides electrical conduction between the central contact and the circumferential contact when the sheet member is pressed, the sheet member being formed by a light guiding sheet configured to guide light emitted from an LED along an upper surface of the spring.
Description
Technical field
The present invention relates to a kind ofly to be applicable to the diaphragm switch of slim electronic equipment such as mobile phone, at the additional panel-switch that the sheet switch module of illumination functions is arranged and be assembled with this sheet switch module of this diaphragm switch.
Background technology
In the past, the key switch (key switch) that is arranged on the guidance panel of various electronic equipments such as being equipped on mobile phone or personal digital assistant device machine possesses mostly: have several springs, and the button (Key top) that disposes in the mode by each summit of pressing spring; And the lighting structure of these buttons of illumination.This lighting structure is obvious for the position that makes button, and by light source (for example light-emitting diode) each button that throws light on, or see through light guide plate by LED illumination a group button (reference example such as Japanese Graduate Li Shenqingante open 2004-69751 communique (Fig. 9)).
Figure 19 shows an example of existing key switch 1.This key switch 1 has the 1a of several key switch portions that is arranged on circuit substrate 2, the lighting structure 1b that reaches the illumination 1a of these key switch portions.Each key switch 1a possesses: be configured in the central contact 3 on the circuit substrate 2; Be configured in central contact 3 peripheral contact 8 on every side; With relative with this central authorities' contact 3 to mode carry spring 4 on peripheral contact 8; And with relative with this spring 4 to the button 7 that disposes of mode.This button 7 has in order to the excellent 7a by the summit of pressing spring 4.
Lighting structure has: above circuit substrate 2 with the light guide plate 5 of the pattern configurations of avoiding above-mentioned excellent 7a; Reach pattern configurations several LED6 on circuit substrate 2 with the side of irradiation light guide plate 5.The excellent 7a of button 7 runs through light guide plate 5.And, be formed with configuration pattern (not icon) at circuit substrate 2.
In this key switch 1,, and form illumination in button 7 integral body by luminous from LED6 and be directed into the bottom of each button 7 of optical illumination of light guide plate 5.
On the other hand, because the corresponding slimming of electronic equipment in recent years, knowing the sixth of the twelve Earthly Branches has a kind of key switch (reference example such as Japan Patent spy open 2004-69751 communique (Fig. 6)) with slimming of lighting structure.
Figure 20 shows the profile construction of the existing key switch 11 of this slimming.This key switch 11 comprises: be arranged on several diaphragm switch portions 19 on the circuit substrate 12; And the lighting structure of these diaphragm switch portions 19 of illumination.
Each diaphragm switch portion 19 has the central contact 13 that is configured on the circuit substrate 12; Be configured in the peripheral contact 18 on every side of central contact 13; Relative with this central authorities' contact 3 to and the spring 14 of configuration; And with relative with this spring 14 to the button 17 that disposes of mode.
Lighting structure has: the light guide plate 15 that disposes in the mode of cover sheet switch portion 19 tops; And be configured in several LED16 of circuit substrate 12 in the mode of a side of illumination light guide plate 15.
In this key switch 11, light guide plate 15 is configured between button 17 and the spring 14, and the side by the rayed light guide plate 15 sent from LED16 so that light guide plate 15 is whole luminous, and illumination button 17 below.
Yet therefore above-mentioned existing each key switch must individually be provided with button 17 and light guide plate 15 with spring 14 owing to have the structure of the light guide plate utilized 15 illuminations in order to the button 17 of driving spring 14, thereby has the problem of the thickness increase of key switch 11.
Moreover, in the existing key switch 1 shown in Figure 19, light guide plate 5 is run through in button portion 7, so the area of the button portion 7 of throwing light on can reduce, and and for adequate illumination button portion 7, must make more than the thickness of light guide plate 5 thickens to a certain degree, the thickness of key switch 1 integral body also can increase thus, thereby has the problem that can't realize slimming.
Therefore on the other hand, in existing key switch 11 shown in Figure 20, light guide plate 15 is configured between button 17 and the spring 14, for by button 17 driving springs 14, must make light guide plate 15 attenuation to a certain degree and make it to have elasticity.Therefore, light guide plate 15 can't be possessed sufficient light.Therefore, have the brightness step-down of button 17, and the tangible problem of brightness disproportionation.And and, become between light guide plate 15 and the spring 14 and be easy to generate the structure in gap between light guide plate 15 and the LED16.When this gap is present in light guide plate 15 peripheral, has from this gap and can produce light leak, and see through the deficiency in light quantity of button 17 or produce the problem of brightness disproportionation.Therefore, utilizing above-mentioned existing key switch 11 to obtain only makes button 17 concentrate luminous illuminating effect.
Summary of the invention
The object of the present invention is to provide a kind of diaphragm switch that can realize slimming to the greatest extent and have simple construction, can make efficiently this diaphragm switch leaded light with illumination functions and incorporate sheet switch module, and can realize the panel-switch of the plane of high brightness and slimming by assembling this sheet switch module.
To achieve these goals, the related diaphragm switch of one embodiment of the invention possesses: some structures, wherein have make be configured in the some central contact on the circuit substrate and be configured in each central contact around some springs of peripheral contact conducting; And to connect airtight the fine sheet of installing in the state of the upper surface separately of these some springs; And described fine sheet is formed by the resin film with light conductivity and light transmission, and described fine sheet forms, thickness from the peripheral part of each spring to the middle body attenuation gradually of each spring of correspondence.And described spring is arranged on the peripheral contact.
The related sheet switch module of one embodiment of the invention possesses: circuit substrate; Be arranged at least 1 central contact of this circuit substrate; Relative with this central authorities' contact to and dispose, and be configured in the spring of this central authorities' contact in the mode that can contact; And the light conductivity thin slice, form by transparent or semitransparent resin film, connecting airtight, and form in the state of the upper surface of the described spring described spring that is covered, thickness from the peripheral part of described spring to the middle body attenuation gradually of described spring; By pushing described light conductivity thin slice, described spring can electrically be contacted with described central contact and form switching circuit, in this sheet switch module, described light conductivity thin slice lining keeps above-mentioned spring, makes the light leaded light above above-mentioned spring that penetrates from the light source that is configured on the described circuit substrate.
The related panel-switch of one embodiment of the invention possesses: sheet switch module; And has a surface sheets of the button portion of the spring top that is configured in this sheet switch module.
Description of drawings
Fig. 1 is the partial sectional view of an embodiment of diaphragm switch of the present invention.
Fig. 2 is the exploded view of diaphragm switch shown in Figure 1.
Fig. 3 is the partial sectional view of diaphragm switch that several jogs of light reflection usefulness are set at the back side of fine sheet.
Fig. 4 is the cutaway view of diaphragm switch that makes the thickness localized variation of fine sheet.
Fig. 5 is the stereogram of an embodiment of sheet switch module of the present invention.
Fig. 6 is the cutaway view of other embodiment of sheet switch module of the present invention.
Fig. 7 is the partial sectional view of sheet switch module shown in Figure 6.
Fig. 8 is the cutaway view of the decomposing state of sheet switch module shown in Figure 6.
Fig. 9 is the cutaway view of the assembled state of sheet switch module shown in Figure 6.
Figure 10 is the partial sectional view of luminous effect of the light conductivity thin slice of sheet switch module shown in Figure 6.
Figure 11 is the stereogram of biopsy cavity marker devices of diaphragm switch that shows other configuration of light source of sheet switch module shown in Figure 6.
Figure 12 is the cutaway view of an example that is assembled with the guidance panel of sheet switch module shown in Figure 6.
Figure 13 is the oblique view of in-built biopsy cavity marker devices that shows other embodiment of sheet switch module shown in Figure 6.
Figure 14 is the partial sectional view that shows other embodiment of the sheet switch module that forms with condensing member covering LED.
Figure 15 has the partial sectional view of formation in order to the sheet switch module of the fine sheet of the extension of covering LED.
Figure 16 is the partial sectional view that shows the sheet switch module that forms with light reflecting member covering condensing member.
Figure 17 shows the partial sectional view of sheet switch module of state that condensing member is arranged on the LED of the central portion that is disposed at circuit substrate.
Figure 18 is the partial sectional view that shows an embodiment of panel-switch of the present invention.
Figure 19 is the cutaway view of existing illuminated key switch.
Figure 20 is the cutaway view of other existing illuminated key switch.
The primary clustering symbol description
1,11 key switch 1a key switch portions
3,13,32 central contact 4,14,22 springs
5,15 light guide plate, 7,17,65 buttons
19 diaphragm switch portions, 20 peripheral contacts
21 diaphragm switches, 23 fine sheets
23a central portion 23b circumference
23c injects the 23d of portion extension
26 planar portions 27a, 27b photo-emission part
Thin slice 29 jogs are sticked together on 28 two sides
31,51,71 sheet switch modules
36 notch parts, 37 hole portions
38a, 38b condensing member 39a, 39b bulge
40a, 40b reduction portion 41 light reflecting members
43 recesses, 44 light-emitting areas
45 adhesive agents 47 are injected portion
48 transparent resins, 56 light conductivity thin slices
61 panel-switches, 62 device substrates
64 rubber sheets, 66 surface sheets
Embodiment
Below, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
At first, illustrate that referring to figs. 1 through Fig. 5 an embodiment of diaphragm switch of the present invention reaches first embodiment of the sheet switch module that is suitable for this diaphragm switch.
As shown in Figures 1 and 2, diaphragm switch 21 involved in the present invention possesses: be configured in circuit substrate 33 for example at least 1 central contact 32 (with reference to Fig. 5) relative to and dispose, and carry spring 22 on peripheral contact 20 in mode that can conducting with this central authorities' contact 32 and peripheral contact 20 (with reference to Fig. 6); And the fine sheet 23 of the light transmission of this spring 22 of lining.In the related diaphragm switch 21 of this embodiment, as shown in Figure 5, paired central contact 32 and spring 22 correspondences are arranged on several pressing keys of mobile phone for example and form several key switches.
Each spring 22 is made by for example laminal metal material, and forms cheese as shown in Figures 1 to 4.Each spring 22 the pushing (click) sense and formed of appropriateness in order can to obtain pushing the time with the slick and sly spring of rubber-like.As shown in Figure 5, fine sheet 23 by with lining for example all the 1 plate sheet member that disposes of the mode of several springs 22 form.
This fine sheet 23 forms by having the resin film that for example is sealedly attached to each light transmission above the spring 22.This resin film preferably, for example polyimides, Merlon, poly terephthalic acid are stretched the macromolecular material that ethyl ester, polypropylene, polyethylene, polystyrene, silica gel etc. have light conductivity (Guide photosensitiveness) and light transmission concurrently.And and, the thickness of fine sheet 23 does not limit especially, but considers that leaded light efficient reaches and the performance that is tightly connected of spring 22, preferably, and in the scope of 0.05mm to 0.3mm, particularly to form about 0.1mm.
As shown in Figure 5, the sheet switch module 31 that is suitable for above-mentioned diaphragm switch 21 has in order to the lighting structure of the position of spring 22 at least that throws light on, and this lighting structure has the light source that light is supplied to fine sheet 23.This light source is constituted (with reference to Fig. 5) by several light-emitting diodes (to call LED in the following text) 34a, the 34b that are configured on the circuit substrate 33, so that for example make light be directed into fine sheet 23 to two edge portions and central portion relatively from fine sheet 23.At this moment, in order to be easy to be directed into the inside of fine sheet 23 from the light of LED, preferably, at the both ends of fine sheet 23 with relative with LED 34a to mode setting have the 23c of the portion that injects (with reference to Fig. 1) of thickness to a certain degree.
Preferably, be pre-formed the 24a of embossing portion in the position of each dome-shaped spring 22 of correspondence of fine sheet 23.The outer shape of the corresponding spring 22 of each 24a of embossing portion and forming.Each 24a of embossing portion forms (with reference to Fig. 2) in the mode that the peripheral part of this embossing portion has the rise part of erectting swimmingly from planar portions 26 25.
This rise part 25 has as described later: when the light from LED imported the inside of fine sheet 23, the route that changes light easily was so that the function that this light transmits along dome-shaped spring 22 swimmingly from planar portions 26.
As shown in Figure 2, diaphragm switch 21 has photo-emission part 27a, the 27b of 24a of embossing portion that is arranged on fine sheet 23 and a part that is arranged on planar portions 26.These photo-emission parts stick together thin slice 28 by the two sides and are tightly connected in the 24a of embossing portion that is installed in fine sheet 23 and planar portions 26.This two sides is sticked together thin slice 28 and is had spring 22 is installed in fine sheet 23 and photo-emission part, and fine sheet 23, photo-emission part 27a, 27b and spring 22 is fixed on the function of circuit substrate 33.Moreover, can also in advance the above-mentioned embossing 24a of portion be arranged on fine sheet 23, and directly be positioned on the spring 22, and utilize means such as heating and pressurization to make the 24a of embossing portion along the shaping that is tightly connected of the outer shape of spring 22.
Photo-emission part 27a, 27b are provided with for the reflecting effect that promotes spring 22 more, and the reflection sheet material or the reflective coating film that utilize the white at the back side be attached to fine sheet 23 or silver etc. to have high reflectance form.Photo-emission part 27a is according to a required part that is arranged on spring 22 planar portions 26 in addition.The shape of photo-emission part 27a, 27b or configuration are not defined, and can suitably be provided with according to shape, size or the configuration of spring 22.
As shown in Figure 3, can also form jog 29, replace photo-emission part with above-mentioned formation at the back side of fine sheet 23.By this jog 29 being arranged on continuously the position at spring 22 places, utilize LED 34a, 34b as described later, make fine sheet 23 leaded lights and a part of route change of the light that comes.Therefore, can make the top of the light sensing spring 22 of volume.
Above-mentioned jog 29 utilizes the surface be formed with the mould of male and fomale(M﹠F) and be formed on fine sheet 23 when the shaping of for example fine sheet 23, or utilizes and frustrate the back side of friction fine sheets 23 such as cutter and form.By this jog 29 to be set with the overlapping mode in the position of the photo-emission part 27a, the 27b that dispose above-mentioned reflection sheet material or form by reflective coating film, and can utilize the reflection of light effect and towards the direct of travel of the light of top, a part that makes the position that disposes spring 22 and periphery thereof is with high brightness luminescent.And,, and can adjust spring 22 positions of fine sheet 23, the luminosity or the light emitting region of its peripheral position by the shape and the degree of depth of suitable setting jog 29.
Fig. 4 shows the thickness localized variation of fine sheet 23 of the part make lining spring 22 and the section shape of the diaphragm switch that is shaped.In this embodiment, illustration so that the thickness of the central portion 23a at spring 22 places of fine sheet 23 mode thinner than the original form shown in the imaginary line A with respect to the thickness of this spring 22 form.So, by making this thickness, and can make a part by the light in this fine sheet 23 towards the top refraction or the reflection of spring 22 from the circumference 23b of spring 22 toward central portion 23a attenuation gradually.Therefore, can make the position of the spring 22 that disposes fine sheet 23 luminous especially brightly.
Moreover, by forming jog 29 in the back side of the fine sheet 23 of change like this, the top of spring 22 is shown with high brightness luminescent at thickness.And, by making covered part attenuation, can also obtain the effect that promotes more by pressure sensitivity as the central portion 23a of the spring 22 at the center of pushing.
In sheet switch module shown in Figure 5 31, on circuit substrate 33, dispose several central contacts 32, LED 34a, 34b, reach the join domain 35 that other connects usefulness.This circuit substrate 33 is made of flexible circuit board (FPC, Flexible Print Circuit).
This circuit substrate 33 is when the diaphragm switch of the guidance panel that for example constitutes mobile phone, form and roughly the same shape and the size of this guidance panel, and dispose the position of numerical key, English alphabet keys, other function key etc., several central contacts 32 are set.LED34a, 34b are configured in the peripheral part and the central portion of circuit substrate 33 as mentioned above.At the fine sheet 23 of diaphragm switch 21, be provided with notch part 36 and hole portion 37 in the position that disposes LED 34a, 34b.
As shown in Figure 5, dispose the LED34a of lateral emitting type, dispose the LED 34b of surface-emitting type at the central portion of circuit substrate 33 at the peripheral part of circuit substrate 33.The configuration position of these LED and configurable number are suitably set according to the number of permutations of shape, size, central contact 32 and the spring 22 of circuit substrate 33, but for example as shown in Figure 5, under the situation of the diaphragm switch 21 of the square shape that disposes numerical key as mobile phone or cross key etc., generally with LED 34a with respect to circuit substrate 33 relatively to each limit and be configured in 2 positions of 2 positions and central portion respectively.
With reference to Fig. 6 to Fig. 9, the 2nd embodiment of sheet switch module involved in the present invention 31 is described.
In several embodiment of the following stated, the part identical with above-mentioned the 1st embodiment given prosign.
The sheet switch module 31 of the 2nd embodiment possesses 1 or several switch portion, and these switch portion have: the central contact 32 that is configured in circuit substrate 33; Electrode pattern with the peripheral contact 20 on every side that is configured in this central authorities' contact 32; And be configured in the spring 22 of the top of central contact 32.And be formed with not shown connector etc. at circuit substrate 33.Circuit substrate 33 is identical with above-mentioned the 1st embodiment, is made of flexible circuit board (FPC).
Each spring 22 disposes in the mode that its outer circumference end is contacted with the peripheral contact 20 of circuit substrate 33.
Identical with above-mentioned the 1st embodiment, the position at the corresponding spring 22 of this light conductivity thin slice 30 preferably, is pre-formed the 24a of embossing portion (with reference to Fig. 6 to Fig. 9).
When actual assembled diaphragm switch 21, transparent adhesive agent 45 is coated on equally the whole back side of the light conductivity thin slice 30 that comprises the 24a of embossing portion, and make spring 22 then remain on the face that sticks together of the 24a of embossing portion, and be tightly connected after making these spring 22 contrapositions on the circuit substrate 33 that is formed with central contact 32, and the lining circuit substrate 33 above.And, can also not set in advance the above-mentioned embossing 24a of portion at light conductivity thin slice 30, and plane thin slice is directly connected airtight at spring 22, and means such as utilization heating and pressurization, make this plane thin slice connect airtight shaping along the outer shape of spring 22, this moment with the border of spring 22, similarly be formed with rise part 25 with the 1st embodiment.
Moreover, when light conductivity thin slice 30 is overlayed on circuit substrate 33 top, as shown in Figure 9, can also adhesive agent 45 be coated under the situation of the 24a of embossing portion, light conductivity thin slice 30 is directly connected airtight at spring 22, and the maintenance that is covered.So, by or not light conductivity thin slice 30 directly being connected airtight on spring 22, and can suppress the absorption and the decay of the light that caused because of adhesive agent 45, can obtain to make light more towards the high reflecting effect of top adhesive agent 45.
In the 2nd embodiment, with the 1st embodiment similarly, owing to make the light that penetrates from the light-emitting area 44 of LED 34 not have the circumferential lateral surface 46 of leaking and injecting light conductivity thin slice 30 efficiently, therefore be provided with cooperated with LED 34 light-emitting area 44 height and make the portion that injects 47 of the thicker formation in end of light conductivity thin slice 30.In the 2nd embodiment, by at the clearance filled transparent resin 48 of 47 in the portion that injects of the light-emitting area 44 of LED 34 and light conductivity thin slice 30 and clogged, and can make the light that penetrates from light-emitting area 44 have the portion that injects 47 that ground imports light conductivity thin slice 30 of leaking.
This transparent resin 48 preferably uses the resin material identical with above-mentioned light conductivity thin slice 30, and the shape that clogs the gap is not particularly limited.And LED 34 is not disposed at the peripheral part of circuit substrate 33 as mentioned above, and the situation on every side that is disposed at each spring 22 is also arranged, and around must shining equably this moment, therefore uses the LED that goes up surface-emitting type.
The illuminating effect of the sheet switch module 31 of above-mentioned formation then, is described with reference to Figure 10.LED 34 obtains electric current via the connector that is arranged on circuit substrate 33 (not icon) from motherboard etc.The light that penetrates from the light-emitting area 44 of LED 34 is injected in the light conductivity thin slice 30 via the portion that injects 47 of transparent resin 48 from the circumferential lateral surface 46 that is formed at light conductivity thin slice 30.The light of the injecting leaded light parallel with the face of circuit substrate 33 is in the inside of light conductivity thin slice 30.
The light that arrives the rise part 25 of the embossing 24a of portion reflects at rise part 25, changes route simultaneously hastily, therefore reflects repeatedly in light conductivity thin slice 30 above spring 22 and leaded light.And because spring 22 forms by metal spring, so the reflection efficiency of integral body is also high on spring 22, and towards the top of spring 22 with radial diffuse reflection.So, because light conductivity thin slice 30 seamlessly connects airtight formation along the outer shape of spring 22, therefore can make the light that penetrates from LED 34 with high brightness and throw light on equably above as the spring 22 of the press section of button operation.
As previously mentioned, by on the spring 22 that light conductivity thin slice 30 connected airtight, carrying out mirror finish with disposed thereon integral body of minute surface portion, or carry out in order to jog sludge ice compacting (embossing) processing of implementing fine concavo-convex processing etc., can seek the lifting of reflectivity or the brightness that produces because of light scattering effect promotes.Moreover, spring 22 is not limited to form with the metal material, can also carry out the resin plate that possesses retractility processing shape as the spring-like embossing of slick and sly shape is cheese, and forms the electrode that makes central contact 32 and 20 conductings of peripheral contact at its back side, realizes whereby electrically connecting.In addition, can also form the metal film of reflection usefulness by plating or evaporation on the surface, or utilization comprises the fine metal particle of tool light reflecting effect, the coating of glass particle is coated with and forms.By forming in order to constitute the position of spring 22, can obtain the integral body softness erosion sense different of spring 22 as previously mentioned with the metallic spring with above-mentioned resin plate.
And, as make the light that is directed in the light conductivity thin slice 30 towards the top of spring 22 structure of leaded light effectively, a kind of method that forms light reflecting member or light scattering portion on the back side or the surface of light conductivity thin slice 30 is arranged.
For example, by at the light reflecting member that coating constituted of the back side of above-mentioned light conductivity thin slice 30 coating, and the light of the inside that imports light conductivity thin slice 30 can not absorbed by circuit substrate 33 by white or silver color, can cover spring 22.Moreover, have most concavo-convex light scattering portions by formation on light conductivity thin slice 30, and can make the light diffusion that imports in this light conductivity thin slice 30, penetrate towards the press section simultaneously.Above-mentioned light scattering portion can impose sludge ice press process etc. and easily forms by used shaping dies when making light conductivity thin slice 30.
Moreover, the sheet switch module 31 of the foregoing description will represent that the literal of various switching manipulations or mark etc. are printed on the light conductivity thin slice 30 on the lining spring 22, and directly use as the press section, but be coated on 30 of light conductivity thin slices beyond the position of corresponding above-mentioned spring 22 by the coating that will have light-proofness, or cover thin shading member, and can throw light on to the top of above-mentioned spring 22 especially brightly.
Figure 11 shows the 3rd embodiment of sheet switch module.The related sheet switch module 51 of this embodiment is configured in the end of light conductivity thin slice 56 with LED 52, and can also suitably be configured in the predetermined position beyond the end, thereby has the formation that can promote light.
At the related sheet switch module 51 of this embodiment, be provided with in order to take in the recess of the LED 52,53 that is installed on the circuit substrate 33.The notch part 36 of the end of this recess by being arranged on light conductivity thin slice 56 and the hole portion 37 that is arranged on the position beyond this end form.The LED 52 that is configured in notch part 36 uses the light-emitting diode of lateral emitting types, and the LED 52 that is configured in hole portion 37 is for luminous equably towards the four directions and use the light-emitting diode of going up surface-emitting type.And, by transparent resin 48 is filled in the inner peripheral surface of notch part 36 or hole portion 37, thereby be embedded in and the gap of 52,53 of LED, and can improve the emission efficiency that is radiated in the light conductivity thin slice 56.
Moreover the portion that injects 47 by the height that cooperated with LED 52,53 is set tilts is not directed in the light conductivity thin slice 56 and can make from the light of LED 52,53 ejaculations with having leakage.Because structures such as other central contact 32, peripheral contact 20, the 24a of embossing portion are identical with above-mentioned sheet switch module 31, its explanation of Therefore, omited.
Figure 12 is assembled with the 1st embodiment of plane panel-switch 61 of the sheet switch module of the 2nd embodiment shown in Figure 6.
This panel-switch 61 sticks together by the two sides is with 63 sheet switch module 31 is bonded on the device substrates 62 such as motherboard, the upper side of this sheet switch module 31, by the rubber sheet 64 with light conductivity, and the surface sheets 66 that is provided with button 65 in the precalculated position with light conductivity constituted.
This surface sheets 66 disposes in the mode of the top of covering rubber sheet 64.And button 65 has light conductivity, on its surface with the printing or concavo-convex various literal and the mark etc. of being formed with.Part except button 65 forms with lighttight shading member.And owing to form metal film in the rear side of shading member, and can improve the leaded light effect in the light conductivity thin slice 56.
The light that penetrates from the LED 34 of sheet switch module 31 is by each corner leaded light in light conductivity thin slice 56.When spring was metallic, the light of leaded light to the spring 22 reflected towards the top by the metal covering of spring 22.Light transmission rubber sheet 64 in 22 reflections of this spring is injected button 65, and can be brightly top (operating surface) of this button 65 be thrown light on.As mentioned above because light conductivity thin slice 30 connects airtight on the surface that bends to dome-shaped spring, therefore import light on this spring can not leak to around, most light can be towards button 65 reflections, and can be with highlight illumination.
Figure 13 to Figure 17 relates to the 4th embodiment of sheet switch module of the present invention.
As mentioned above, be provided with in order to accommodate notch part 36 and the hole portion 37 of the LED 34a, the LED 34b that are configured on the circuit substrate 33 at light conductivity thin slice 30, therefore shown in Figure 13,14,17, when diaphragm switch 21 is arranged on circuit substrate 33, have the situation that around the LED 34a, the LED 34b that expose from notch part 36 and hole portion 37, produces a little gap.Therefore, in the sheet switch module shown in the 4th embodiment 71, in order to bury this gap underground and to make it have the optically focused effect, and around LED 34a, 34b, dispose condensing member 38a, 38b.
This condensing member 38a, 38b are preferably, use the resin material that possesses light conductivity with light conductivity thin slice 30 identical materials, shown in Figure 13,14,17, by the resin material of the peripheral clearance of burying LED 34a, 34b underground, give prominence to lentiform bulge 39a, 39b in the upper side of LED 34a, 34b, and to be connected the 40a of reduction portion, the 40b of light conductivity thin slice 30 smoothly from this bulge 39a, 39b integrally formed.By this condensing member 38a, 38b are set, can make from LED 34a, the 34b light around diffusing to import efficiently in the light conductivity thin slice 30, and realize high brightness luminescent and save electric power.And in this embodiment, photo-emission part 27b is configured in the peripheral part of spring 22, and constitutes with the illumination effect of the outline portion that obtains to emphasize spring 22 or the mode of decorative effect.And, as shown in figure 13, around the central contact 32 of circuit substrate 33, be formed with the electrode pattern that comprises peripheral contact 20.
Particularly, condensing member 38a as shown in figure 14, in order to bury the gap between the 23c of the portion that injects that is created in LED 34a and light conductivity thin slice 30 underground, and with above LED 34a to inject the 23c of portion above have bulge 39a and a 40a of reduction portion mode form.By this bulge 39a is set, and make the light optically focused that diffuses to the top from LED 34a, and can import smoothly towards injecting the 23c of portion by the 40a of reduction portion.
And, other form as bulge 39a and the 40a of reduction portion, as shown in figure 15, can also be wholely set at light conductivity thin slice 30 and prolong the extension 23d inject the 23c of portion and to form, and utilize this extension 23d to cover the top of LED 34a and condensing member 38a.So, can efficiently the light that penetrates from LED 34a be imported in the light conductivity thin slice 30, and can make it to have the spotlight effect same with bulge 39a shown in Figure 14 by forming light conductivity thin slice 30.
As Figure 16, after condensing member 38a being formed on LED 34a and injecting gap between the 23c of portion, above LED 34a, to be applied to the mode of a part of injecting the 23c of portion, setting is in order to the light reflecting member 41 of the top that covers this condensing member 38a fully, and the circuit substrate 33 of side also is provided with light reflecting member 42 below LED 34a.Light reflecting member 41,42 is formed by reflection sheet material or reflective coating film with high reflectances such as white or silver.By light reflecting member 41,42 is set, around can preventing to diffuse to, and can promote the efficient of injecting that is incident upon light conductivity thin slice 30 from the light that LED 34a penetrates.Moreover, because light reflecting member 41 has light-proofness in the outside relatively, therefore can make LED 34a, 34b hidden, and can make light can directly not inject eyes.Moreover, by as shown in figure 14 bulge 39a and above the 40a of reduction portion or the extension 23d of fine sheet 23 as shown in figure 15 above light reflecting member 41 is set, can prevent to diffuse to the light leak of top really, and can improve towards the spotlight effect of light conductivity thin slice 30 from LED 34a.
Moreover, by the circuit substrate 33 that LED 34a is arranged in mounting light reflecting member 42 is set, light leak can be prevented, and spotlight effect can be improved more from circuit substrate 33.
As Fig. 5 and shown in Figure 13, the light-emitting diode of mounting surface-emitting type in the LED of the central portion of circuit substrate 33 34b use, therefore utilizing the condensing member 38b that is made of the light conductivity resinous wood to cover to expose has above the portion of the hole of this LED 34b, can make it leaded light efficiently to fine sheet 23 (with reference to Figure 13).The shape that is arranged on the condensing member 38b on this LED 34b as shown in figure 17, preferably, have that the part by illuminated centerline B has recess 43 directly over LED 34a, and be the peripheral process at center for the bulge 39a of top, and form from the mode that this bulge 39b is connected the 40b of reduction portion of light conductivity thin slice 30 smoothly to have with this recess 43.
By finishing above-mentioned processing, the light that penetrates from LED 34a towards the top can utilize above-mentioned bulge 39a optically focused, and can be along the 40b of reduction portion leaded light to light conductivity thin slice 30.And, above-mentioned light reflecting member 41 is set above condensing member 38b, thereby can obtains better spotlight effect, and can make LED 34a, 34b hidden, make light can directly not inject eyes.
And, by making light conductivity thin slice 30 in mode in advance with the space that can accommodate LED 34a, and when being installed in sheet switch module 31 on the circuit substrate 33, hole portion 37 need not be set or fill and lead up this gap with resin material, can so that the light optically focused that penetrates from LED 34a in light conductivity thin slice 30.
The irradiation effect of the sheet switch module 71 of above-mentioned formation then, is described with reference to Figure 14.
From motherboard etc. via the connector that is arranged on circuit substrate 33 (not shown) supplying electric current to LED 34a.From the light that the light-emitting area 44 of LED 34a penetrates, directly import the 23c of the portion that injects of light conductivity thin slice 30 via condensing member 38a.At this moment, the part of light of top that diffuses to LED 34a, and is guided by the 40a of reduction portion by optically focused by bulge 39a, is imported into simultaneously and injects the 23c of portion.So under the state that will give optically focused from the direct sunshine of LED 34a, the light of being guided by bulge 39a and the 40a of reduction portion, by the inside of leaded light to light conductivity thin slice 30.The light that arrives the rise part 25 of the embossing 24a of portion reflects in light conductivity thin slice 30 above spring 22 repeatedly, is guided simultaneously.Moreover because spring 22 forms by hardware, so the reflection efficiency of the top integral body of spring 22 is also high, and towards the top of spring 22 with radial diffuse reflection.
So, light conductivity thin slice 30 can seamlessly connect airtight formation along the outer shape of spring 22, therefore can make the light that penetrates from LED 34 with high brightness and throw light on equably above as the spring 22 of the press section of button operation.
Moreover, as shown in Figures 2 and 3, by being provided with by reflection sheet material, reflective coating film at the back side of light conductivity thin slice 30 or being connected jog 29 formed photo-emission part 27a, the 27b of light conductivity thin slice 30, and can seek the lifting of reflectivity or the brightness that produces because of light scattering effect promotes.Moreover spring 22 is not limited to form with the metal material, can also carry out embossing to process shape be cheese the resin plate that possesses retractility such as slyness are spring-like, and form at its back side with so that the electrode of central contact 32 and 20 conductings of peripheral contact.In addition, can also form the metal film of reflection usefulness by plating or evaporation on the surface, or utilization comprises the fine metal particle of tool light reflecting effect, the coating of glass particle is coated with and forms.By forming in order to constitute the position of spring 22, can obtain the integral body softness erosion sense different of spring 22 as previously mentioned with the metallic spring with above-mentioned resin plate.
Moreover, above-mentioned sheet switch module 71 will represent that the literal of various switching manipulations or mark etc. are printed on the light conductivity thin slice 30 on the lining spring 22, and directly use as the press section, but be coated on 30 of light conductivity thin slices beyond the position of corresponding above-mentioned spring 22 by the coating that will have light-proofness, or cover thin shading member, and can throw light on to the top of above-mentioned spring 22 especially brightly.
Figure 18 shows the 2nd embodiment of the plane panel-switch 81 of assembling above-mentioned sheet switch module 71.
This panel-switch 81 sticks together by the two sides is with 63 above-mentioned sheet switch module 71 to be bonded on the device substrate 62 such as motherboard, the top of this sheet switch module 71 by the rubber sheet 64 with light conductivity, and the surface sheets 66 that is provided with button 65 in the precalculated position with light conductivity constituted.
The light that penetrates from the LED 34 of sheet switch module 31 each corner leaded lights in the light conductivity thin slice 56.The light of leaded light to the spring 22 reflects towards the top by the metal covering of spring 22.Light transmission rubber sheet 64 in 22 reflections of this spring is injected button 65, and can be brightly top (operating surface) of this button 65 be thrown light on.As mentioned above because light conductivity thin slice 30 connects airtight on the surface that bends to dome-shaped spring 22, therefore import light on this spring 22 can not leak to around, most light can be towards button 65 reflections, and can be with highlight illumination.
Diaphragm switch involved in the present invention makes the thickness of integral thickness and spring roughly the same because therefore lining maintenance under the state that connects airtight spring with resin film can realize slimming.And,, therefore by making light import resin film, and can be directed in the resin film, and make the luminous brightly demonstration of spring from light source from LED etc. because resin film possesses light conductivity.In addition, because several springs connect airtight with proper spacing and remain on resin film, has the diaphragm switch that several key switches are arranged and easily form.Therefore and diaphragm switch 21 involved in the present invention is formed by the extremely thin fine sheet that resin film constitutes with integral body, warpage freely.
Moreover diaphragm switch 21 connects airtight at circuit substrate 33 and constitutes sheet switch module 31, therefore shown in above-mentioned embodiment, is not limited to plane panel-switch, can also carry the panel-switch that forms curve form cooperating shape such as electronic equipment.
Sheet switch module involved in the present invention is wholely set the diaphragm switch that is made of above-mentioned being equipped with on the circuit substrate of LED, and the condensing member that is made of transparent resin is set, so that the gap of the fine sheet of LED and diaphragm switch can not produce, the light that penetrates from LED is not had leak and efficiently along the spring leaded light.
And, according to sheet switch module involved in the present invention, owing to constitute at spring and be provided with the light conductivity thin slice that is equivalent in order to the illumination spring, therefore need not as prior art, the light conductivity thin slice be set in addition except that spring, and do not need button, thereby can provide a kind of sheet switch module that can approach to the greatest extent.
It is slim and plane that panel-switch involved in the present invention owing to utilize is formed by the above-mentioned surface sheets that constitutes formed sheet switch module and have a button portion that shows various switching functions, therefore can suitably carry in action slim electronic equipments such as phone.And therefore light conductivity thin slice by possessing sheet switch module and the LED spring that can throw light on efficiently can reduce the quantity of LED.Thus, luminosity is reduced and promptly can realize saving electric power.
Above explanation preferred example involved in the present invention, but the present invention is not limited to these embodiment is appreciated that various distortion and change can be finished by these embodiment.
Claims (20)
1. diaphragm switch, it possesses:
Some structures, wherein have make be configured in the some central contact on the circuit substrate and be configured in each central contact around some springs of peripheral contact conducting; And
To connect airtight the fine sheet of installing in the state of the upper surface separately of these some springs;
Described fine sheet is formed by the resin film with light conductivity and light transmission, and described fine sheet forms, thickness from the peripheral part of each spring to the middle body attenuation gradually of each spring of correspondence.
2. diaphragm switch as claimed in claim 1, wherein, described fine sheet has leaded light character, and is stretched by polyimides, Merlon, poly terephthalic acid that arbitrary material is formed in ethyl ester, polypropylene, polyethylene, polystyrene, the silica gel.
3. diaphragm switch as claimed in claim 1 or 2 wherein, is provided with photo-emission part at corresponding with each spring at least face of described fine sheet.
4. diaphragm switch as claimed in claim 3, wherein, by putting the reflection sheet material or applying reflective coating film on the described fine sheet or on described fine sheet, forming continuous jog connecing on the described fine sheet, thereby described photo-emission part is set on described fine sheet.
5. sheet switch module, it possesses:
Circuit substrate;
A kind of structure wherein has the central contact that is configured on this circuit substrate; Be arranged at the peripheral contact on every side of this central authorities' contact on this circuit substrate; And be configured on this periphery contact and be configured to contact from the top spring of this central authorities' contact; And
The light conductivity thin slice is formed by transparent or semitransparent resin film, connecting airtight, and form in the state of the upper surface of the described spring described spring that is covered, thickness from the peripheral part of described spring to the middle body attenuation gradually of described spring;
Wherein, described spring constitutes switching circuit, and when pushing this light conductivity thin slice with box lunch, described spring can provide conductive path between described central contact and described peripheral contact;
Wherein, several described structures are set, and the described spring of described light conductivity thin slice lining maintenance, and constitute the light leaded light above described each spring that makes from the light source ejaculation.
6. sheet switch module as claimed in claim 5, wherein, described light conductivity thin slice be covered via adhesive agent keep described each spring above.
7. sheet switch module as claimed in claim 5, wherein, described light conductivity thin slice directly connect airtight described each spring above.
8. sheet switch module as claimed in claim 5, wherein, described light conductivity thin slice has the rise part of the route change that makes light near around the described spring.
9. sheet switch module as claimed in claim 8, wherein, corresponding described each spring configuration shape and on described light conductivity thin slice, form embossing portion.
10. sheet switch module as claimed in claim 5, wherein, described light conductivity thin slice is formed by 0.05mm to 0.3mm thickness of material, stretches any one or these the combination in the ethyl ester resin and this material is selected from allyl resin, silicones, polycarbonate resin, poly terephthalic acid.
11. sheet switch module as claimed in claim 5, wherein, described light source is configured near the end of described light conductivity thin slice, and clogs gap between this light source and described light conductivity thin slice by transparent resin.
12. sheet switch module as claimed in claim 5 wherein, in order to taking in the recess of described light source, and is clogged gap between the inner peripheral surface of described light source that is accommodated in this recess and recess by transparent resin in the setting of described light conductivity thin slice.
13. sheet switch module as claimed in claim 12, wherein, the notch part of the end of described recess by being formed on described light conductivity thin slice or the hole portion that is opened in the position beyond the end form.
14. sheet switch module as claimed in claim 5 wherein, is formed with the minute surface portion of light reflection usefulness or the jog that light scattering is used on described spring.
15. sheet switch module as claimed in claim 5 wherein, disposes a condensing member covering described light source, this condensing member with so that the light optically focused that penetrates from described light source at described light conductivity thin slice.
16. sheet switch module as claimed in claim 15, wherein, described condensing member has: the bulge that is configured to cover the upper area of described light source; And the reduction portion that extends to described light conductivity thin slice from this bulge smoothly.
17. sheet switch module as claimed in claim 5 wherein, disposes light reflecting member at the upper face side of described light source.
18. sheet switch module as claimed in claim 5, wherein, side below the described light source of the peripheral part that is disposed at described light conductivity thin slice disposes light reflecting member.
19. sheet switch module as claimed in claim 5, wherein, described light source comprises at least one light-emitting diode.
20. the panel-switch of a plane, it possesses: sheet switch module as claimed in claim 5; And the surface sheets that above the spring of this sheet switch module, disposes button portion.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005-239129 | 2005-08-19 | ||
| JP2005239129A JP4728067B2 (en) | 2005-08-19 | 2005-08-19 | Seat switch module |
| JP2005239129 | 2005-08-19 | ||
| JP2005-274618 | 2005-09-21 | ||
| JP2005274618 | 2005-09-21 | ||
| JP2005274618A JP4959164B2 (en) | 2005-09-21 | 2005-09-21 | Seat switch, seat switch module and panel switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1917113A CN1917113A (en) | 2007-02-21 |
| CN1917113B true CN1917113B (en) | 2011-07-06 |
Family
ID=37738072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006101159538A Expired - Fee Related CN1917113B (en) | 2005-08-19 | 2006-08-21 | Sheet switch, sheet switch module and panel switch |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4728067B2 (en) |
| CN (1) | CN1917113B (en) |
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| JP2008234863A (en) * | 2007-03-16 | 2008-10-02 | Shin Etsu Polymer Co Ltd | Illuminating sheet structure and operation switch |
| KR20080088324A (en) * | 2007-03-29 | 2008-10-02 | 삼성전자주식회사 | Keypad assembly |
| US7718910B2 (en) | 2007-06-20 | 2010-05-18 | Panasonic Corporation | Movable contact assembly and switch using the same |
| JP2009021142A (en) | 2007-07-13 | 2009-01-29 | Citizen Electronics Co Ltd | Sheet switch module |
| JP4190568B1 (en) * | 2007-07-30 | 2008-12-03 | シャープ株式会社 | Mobile device |
| JP2009037848A (en) * | 2007-08-01 | 2009-02-19 | Alps Electric Co Ltd | Illumination member for switch, and switch device using it |
| TWI345719B (en) * | 2007-11-15 | 2011-07-21 | Lite On Technology Corp | Light emitting keyboard |
| US7946720B2 (en) | 2007-11-22 | 2011-05-24 | Panasonic Corporation | Light guide sheet, movable contact structure using the light guide sheet, method of manufacturing the movable contact structure, and switch using the light guide sheet and the movable contact structure |
| JP5239355B2 (en) * | 2007-11-22 | 2013-07-17 | パナソニック株式会社 | Manufacturing method of movable contact body |
| CN101452781B (en) * | 2007-12-06 | 2011-07-20 | 旭丽电子(广州)有限公司 | Push button device |
| JP5298819B2 (en) * | 2007-12-11 | 2013-09-25 | パナソニック株式会社 | Movable contact body with light guiding function and illumination panel switch constructed using the same |
| JP5293068B2 (en) * | 2008-01-07 | 2013-09-18 | パナソニック株式会社 | Movable contact body |
| JP2009205940A (en) * | 2008-02-28 | 2009-09-10 | Panasonic Corp | Light guide sheet, and moving contact body using it |
| JP2009245909A (en) * | 2008-04-01 | 2009-10-22 | Omron Corp | Key illumination switch module, and light guide sheet |
| JP2009283174A (en) * | 2008-05-20 | 2009-12-03 | Shin Etsu Polymer Co Ltd | Illumination structure equipped with light guide layer |
| US8367950B2 (en) | 2008-06-26 | 2013-02-05 | Nippon Mektron, Ltd. | Key module for mobile device |
| JP2010027537A (en) * | 2008-07-24 | 2010-02-04 | Citizen Electronics Co Ltd | Sheet switch module |
| EP2400520A1 (en) * | 2009-03-31 | 2011-12-28 | Fujikura, Ltd. | Sheet switch module and method of manufacturing same |
| JP5466916B2 (en) * | 2009-10-15 | 2014-04-09 | 日本メクトロン株式会社 | Switch module |
| FI20096108A (en) * | 2009-10-28 | 2011-04-29 | Perlos Oyj | Arrangement |
| JP5427637B2 (en) * | 2010-02-17 | 2014-02-26 | 日本メクトロン株式会社 | Switch module |
| JP5427638B2 (en) * | 2010-02-17 | 2014-02-26 | 日本メクトロン株式会社 | Switch module |
| JP2011222379A (en) * | 2010-04-13 | 2011-11-04 | Alps Electric Co Ltd | Light guide sheet, sheet with contact spring, and switch device |
| TW201140634A (en) * | 2010-05-07 | 2011-11-16 | Primax Electronics Ltd | Luminous keyboard |
| KR101102943B1 (en) * | 2011-07-27 | 2012-01-10 | 박철종 | Optical sheet |
| CN102853376B (en) * | 2012-08-01 | 2015-10-28 | 惠州Tcl移动通信有限公司 | A kind of leaded light component of screen soft keyboard character and touch-screen mobile phone |
| JP6945186B2 (en) * | 2017-07-10 | 2021-10-06 | パナソニックＩｐマネジメント株式会社 | Lighting device |
| CN107845521B (en) * | 2017-11-27 | 2020-03-24 | 维沃移动通信有限公司 | Electronic equipment and key lamp |
| WO2020208940A1 (en) * | 2019-04-10 | 2020-10-15 | パナソニックＩｐマネジメント株式会社 | Push switch and switch device with light |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2007053063A (en) | 2007-03-01 |
| JP4728067B2 (en) | 2011-07-20 |
| CN1917113A (en) | 2007-02-21 |
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