CN101778326B - Flexible cold-light electroacoustic actuator and electronic device using electroacoustic actuator - Google Patents
Flexible cold-light electroacoustic actuator and electronic device using electroacoustic actuator Download PDFInfo
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- CN101778326B CN101778326B CN 200910001782 CN200910001782A CN101778326B CN 101778326 B CN101778326 B CN 101778326B CN 200910001782 CN200910001782 CN 200910001782 CN 200910001782 A CN200910001782 A CN 200910001782A CN 101778326 B CN101778326 B CN 101778326B
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Abstract
The invention provides an electroacoustic actuator, which comprises a conductive plate, a standing-power diaphragm and a fluorescent layer. The standing-power diaphragm is provided with a main film body and an electrode layer and is superposed on the conductive plate with a plurality of openings, wherein the main film body has static charges; and the electrode layer is formed on the upper surface of the main film body. The fluorescent layer is arranged between the lower surface of the main film body and the conductive plate.
Description
Technical field
The electronic installation that the present invention relates to a kind of electro-acoustic actuator and use this electro-acoustic actuator, the electronic installation that relates more specifically to a kind of flexible cold-light electroacoustic actuator and use this flexible cold-light electroacoustic actuator.
Background technology
The cold light soft board as light emitting source, when the cold light material is subject to high drive, produces cold light owing to the atomic level of cold light material changes with cold light material (phosphor).Fig. 1 has shown traditional cold light soft board 100, comprises fluorescence coating 130, and its below is provided with dielectric layer 140.Below dielectric layer 140, be provided with rear electrode 150, above fluorescence coating 130, then be provided with transparent front electrode 120.Above front electrode 120, be provided with transparent front over cap 110, over cap 160 after then being provided with below the rear electrode 150.For making cold light soft board 100 can produce cold light, need electrode 120,150 is applied suitable voltage.After voltage applies; just set up electric field between the electrode 120 and 150; the electronics of the fluorescent material in the fluorescence coating 130 obtains just to transit to the high energy rank behind the energy from electric field; when the low energy rank are gone back in its transition; can radiate light, this light can pass transparent front electrode 120 and front over cap 110 rear ejaculation cold light soft boards 100.Though above-mentioned cold light soft board 100 can send cold light, can't sound.
Piezo-electric loudspeaker or receiver are with piezoelectric or be attached at soft board on the piezoelectric as vibrating diaphragm.When external voltage signal input piezoelectric patches, piezoelectric is subject to the voltage stimulation and produces deformation, and then the vibrating diaphragm generation vibration that drives piezoelectric or link together with piezoelectric, thereby sounds.Fig. 2 has shown a kind of existing piezo-electric loudspeaker 200, is provided with electrode 220 on its flexible base, board 210, is provided with piezoelectric layer 230 on the electrode 220, then is provided with another electrode 240 on piezoelectric layer 230, and is corresponding with electrode 220.When voltage signal input electrode 220,240 the time, just piezoelectric layer 230 can be subject to the stimulation of voltage and produce deformation, if input electrode 220,240 voltage signal constantly change, just can make piezoelectric layer 230 and substrate 210 produce vibration and sound.Though above-mentioned loud speaker 210 can be sounded, can't be luminous.
Above-mentioned two kinds of devices are independently element, if need discrete function then to need independently the space to come apparatus for placing, same device also can't have sounding and luminous function simultaneously.
In view of this, just having needs to propose a kind of have sounding and luminous device, to address the above problem.
Summary of the invention
The invention provides a kind of flexible cold-light electroacoustic actuator, simultaneously sounding and luminous.
The electro-acoustic actuator of first embodiment of the invention comprises the first conductive plate, and this first conductive plate is as electrode, and it has a plurality of openings, and the thickness of the first conductive plate is 0.1mm to 2mm.Above the first conductive plate, stacked the first electret diaphragm, thickness is 0.5 to 100 μ m, it has made by dielectric material and with the first film main body of electrostatic charge and be formed at the first electrode layer on the upper surface of the first film main body.And between the lower surface and the first conductive plate of the first film main body, being provided with the first fluorescence coating, it has a plurality of openings relative with the opening of conductive plate.The thickness of the first fluorescence coating is 10 μ m to 2mm, can be used as spacer, uses so that the predetermined distance of being separated by between the first electret diaphragm and the first conductive plate.
The electro-acoustic actuator of second embodiment of the invention comprises the element that the electro-acoustic actuator of the first embodiment has, in addition, the electro-acoustic actuator of present embodiment also comprises the second electret diaphragm, thickness is 0.5 to 100 μ m, and it has made by dielectric material and with the second main film body of electrostatic charge and be formed at the second electrode lay on the lower surface of the second main film body.Between the first electrode layer and the second electrode lay, be folded with insulating barrier, this insulating barrier is made of the ventilated membrane of porous.And above the second main film body, then be provided with the second conductive plate, and this second conductive plate is as electrode, and it has a plurality of openings.The thickness of the second conductive plate is 0.1 to 2mm, by wire netting or transparent conduction opening film, indium and tin oxide film for example, consist of.In addition, between the upper surface and the second conductive plate of the second main film body, be provided with the second fluorescence coating, it has a plurality of openings.The thickness of the second fluorescence coating is 10 μ m to 2mm, also can be used as spacer, uses so that the predetermined distance of being separated by between the second electret diaphragm and the second conductive plate.
The present invention also provides a kind of electronic installation that comprises above-mentioned flexible cold-light electroacoustic actuator.
The electronic installation of the first form of first embodiment of the invention comprises housing, and it has a plurality of openings, between the inner surface and outer surface of housing.On the inner surface of housing, be provided with the first electro-acoustic actuator, wherein the first conductive plate of the first electro-acoustic actuator is arranged on the inner surface of housing, and the first electret diaphragm stacks on the first conductive plate.Damage for avoiding the first conductive plate to slide at housing, between the inner surface of the first conductive plate and housing, be provided with a plurality of spacers, prevent that the first conductive plate from directly contacting with housing.
The electronic installation of the second form of first embodiment of the invention comprises housing, and it has a plurality of openings, between the inner surface and outer surface of housing.On the inner surface of housing, be provided with the first electro-acoustic actuator, wherein the first electret diaphragm is positioned on the inner surface of housing, and the first conductive plate stacks on the top of the first electret diaphragm.Damage for avoiding the first electrode layer to slide at housing, between the inner surface of the first electrode layer and housing, be provided with a plurality of spacers, prevent that the first electrode layer from directly contacting with housing.
The electronic installation of second embodiment of the invention comprises housing, and it has a plurality of openings, between the inner surface and outer surface of housing.Above the inner surface of housing, be provided with the electro-acoustic actuator of the second embodiment, wherein the conductive plate of electro-acoustic actuator is arranged on the inner surface of housing, and electret diaphragm stacks on the conductive plate.Between the inner surface of conductive plate and housing, be provided with a plurality of spacers, prevent that conductive plate from sliding and damage at housing.
The electronic installation of the third embodiment of the invention substantially electronic installation with the first form of the first embodiment is identical, and difference is that the conductive plate that the electroacoustic of the first form of former the first embodiment activates is replaced by the conductive layer on the inner surface that is plated in housing.
The electronic installation of the fourth embodiment of the invention substantially electronic installation with the second embodiment is identical, and difference is that the conductive plate that the electroacoustic of former the second embodiment activates is replaced by the conductive layer on the inner surface that is plated in housing.
Have simultaneously sounding and luminous function according to electro-acoustic actuator of the present invention, when this electro-acoustic actuator is applied on the electronic installation, can reduce the space in the shared electronic installation.In addition, electro-acoustic actuator of the present invention structurally is comprised of many little pronunciations unit, forms the sounding body of array, therefore more can effectively sound than traditional piezo-electric loudspeaker.
In order to allow above and other purpose of the present invention, feature and the advantage can be more obvious, the embodiment of the invention cited below particularly, and cooperate appended diagram, be described in detail below.
Description of drawings
Fig. 1 is the profile of existing cold light panel.
Fig. 2 is the profile of existing piezo-electric loudspeaker.
Fig. 3 is the profile of the electro-acoustic actuator of first embodiment of the invention.
Fig. 4 is the profile of the electro-acoustic actuator of second embodiment of the invention.
Fig. 5 is the outward appearance according to electronic installation of the present invention.
Fig. 6 a is the profile of electronic installation of the first form of first embodiment of the invention, and wherein back of the body lid separates with the main body of electronic installation.
Fig. 6 b is the profile of electronic installation of the first form of first embodiment of the invention, and wherein the back of the body mounts cover on the main body of being located at electronic installation.
Fig. 7 a is the profile of electronic installation of the second form of first embodiment of the invention, and wherein back of the body lid separates with the main body of electronic installation.
Fig. 7 b is the profile of electronic installation of the second form of first embodiment of the invention, and wherein the back of the body mounts cover on the main body of being located at electronic installation.
Fig. 8 a is the profile of the electronic installation of second embodiment of the invention, and wherein back of the body lid separates with the main body of electronic installation.
Fig. 8 b is the profile of the electronic installation of second embodiment of the invention, and wherein the back of the body mounts cover on the main body of being located at electronic installation.
Fig. 9 a is the profile of the electronic installation of third embodiment of the invention, and wherein back of the body lid separates with the main body of electronic installation.
Fig. 9 b is the profile of the electronic installation of third embodiment of the invention, and wherein the back of the body mounts cover on the main body of being located at electronic installation.
Figure 10 a is the profile of the electronic installation of fourth embodiment of the invention, and wherein back of the body lid separates with the main body of electronic installation.
Figure 10 b is the profile of the electronic installation of fourth embodiment of the invention, and wherein the back of the body mounts cover on the main body of being located at electronic installation.
The main element symbol description
100 cold light soft boards, 110 front over caps
120 front electrode 130 fluorescence coatings
140 dielectric layers, 150 rear electrodes
160 rear over cap 200 loud speakers
210 substrates, 220 electrodes
230 piezoelectric layers, 240 electrodes
300 electro-acoustic actuators, 320 electret diaphragms
322 main film body, 324 electrode layers
340 conductive plates, 342 openings
350 fluorescence coatings, 352 openings
400 electro-acoustic actuators, 420 electret diaphragms
422 main film body, 430 electrode layers
440 conductive plates, 442 openings
450 fluorescence coatings, 352 openings
510 housings, 512 inner surfaces
514 opening 516a contacts
570 spacers, 595 circuit boards
600 electronic installations, 700 electronic installations
800 electronic installations, 940 conductive layers
Embodiment
With reference to figure 3, the electro-acoustic actuator 300 of first embodiment of the invention comprises conductive plate 340, this conductive plate 340 is as electrode, and have a plurality of openings 342, the thickness of conductive plate 340 is 0.1mm to 2mm, by wire netting or transparent conduction opening film, indium and tin oxide film (ITOfilm) for example, consist of.Above conductive plate 340, stacked electret diaphragm (electret diaphragm) 320, thickness is 0.5 to 100 μ m, and it has made by dielectric material and with the main film body 322 of electrostatic charge and be formed at electrode layer 324 on the upper surface of main film body 322.And between the lower surface and conductive plate 340 of main film body 322, being provided with fluorescence coating 350, it has a plurality of openings 352 relative with the opening 342 of conductive plate 340.The thickness of fluorescence coating 350 is 10 μ m to 2mm, can be used as spacer (spacer), with the predetermined distance so that 340 of electret diaphragm 320 and conductive plates are separated by.
For making main film body 322 with electrostatic charge, original not with the main film body 322 of electrostatic charge need to polarize (polarized) process, for example after electrode layer 324 forms, with corona charging (coronacharging) method the inside of main film body 322 and surface are gone up with electric charge.The dielectric material that is suitable as main film body 322 can be for example fluorinated ethylene propylene (FEP) (fluorinated ethylene propylene; FEP), polytetrafluoroethylene (Polytetrafluoroethene; PTFE), polyvinyladine floride (PolyvinylideneFluoride; PVDF), silicon dioxide (SiO
2) or some fluorine-containing high molecular polymer.And the periphery of electret diaphragm 320 needs to be fixed, and moves to prevent it.When the electro-acoustic actuator 300 of operation present embodiment, need respectively conductive plate 340 and electrode layer 324 inputs and original sound signal homophase and anti-phase electronic signal, differential (differential) signal namely, make electret diaphragm 320 be subject to enclosed pasture (Coulomb) active force from conductive plate 340 and electrode layer 324 to produce push-pull effect (Push-Pulleffect), thereby the vibration according to this electronic signal occurs, and this vibration can promote air and produce sound.
In addition, the electric field of being set up by electrode layer 324 and conductive plate 340 can provide energy to fluorescence coating 350, make the electronics of fluorescent material adjourn to the high energy rank by the low energy step, when the low energy rank are gone back in its transition, can radiate light, this light can penetrate electro-acoustic actuator 300 after passing conductive plate 340, by the user is seen.Those skilled in the art in the invention should be appreciated that different signal voltages can make fluorescence coating 350 inspire the fluorescence of different colours and intensity.And if electrode layer 324 is made by transparent material with main film body 322, for example main film body 322 is made by transparent FEP, and the light that fluorescence coating 350 sends also can pass main film body 322 and penetrate electro-acoustic actuator 300 with electrode layer 324.
With reference to figure 4, the electro-acoustic actuator 400 of second embodiment of the invention comprises the element that electro-acoustic actuator 300 has, and namely comprises electret diaphragm 320, conductive plate 340 and fluorescence coating 350.Except said elements, electro-acoustic actuator 400 also comprises electret diaphragm 420, and thickness is 0.5 to 100 μ m, and it has made by dielectric material and with the main film body 422 of electrostatic charge and be formed at electrode layer 424 on the lower surface of main film body 422.Between electrode layer 324 and 424, be folded with insulating barrier 490, consisted of by the ventilated membrane of porous.And above main film body 422, then be provided with conductive plate 440, and this conductive plate 440 is as electrode, and it has a plurality of openings 442 relative with opening 342.The thickness of conductive plate 440 is 0.1 to 2mm, by wire netting or transparent conduction opening film, indium and tin oxide film for example, consist of.In addition, between the upper surface and conductive plate 440 of main film body 422, be provided with fluorescence coating 450, it has a plurality of openings 452 relative with the opening 442 of conductive plate 440.The thickness of fluorescence coating 450 is 10 μ m to 2mm, can also be as spacer, with the predetermined distance so that 440 of electret diaphragm 420 and conductive plates are separated by.
Similarly, for making main film body 422 with electrostatic charge, originally do not need processings that polarize with the main film body 422 of electrostatic charge, so that go up with electric charge on its inner and surface yet.And the dielectric material that is suitable as main film body 422 also can be FEP, PTFE, PVDF, silicon dioxide or high molecular polymer that some is fluorine-containing.In addition, the periphery of electret diaphragm 420 also needs to be fixed, and moves to prevent it.When the electro-acoustic actuator 400 of operation present embodiment, need the first electronic signal to conductive plate 440 and electrode layer 324 inputs and original sound signal homophase, electrode layer 424 and conductive plate 340 are then inputted respectively the second anti-phase electronic signal.Like this, electret diaphragm 320,420 will be subject to from the enclosed pasture effect of conductive plate 340 with electrode layer 324 and conductive plate 440 and electrode layer 424, and produces vibration according to described the first electronic signal and the second electronic signal respectively, thereby sounds.The sound that is produced by electret diaphragm 320 vibrations can pass the insulating barrier 490 of porous, and similarly, the sound that is produced by electret diaphragm 420 vibrations also can pass the insulating barrier 490 of porous.The electro-acoustic actuator 400 of this kind double diaphragm structure can produce than the electro-acoustic actuator 300 of single diaphragm structure of the first embodiment the volume of large upper a times (3dB).
In addition, the electric field of being set up by electrode layer 424 and conductive plate 440 can provide energy to make it luminous to fluorescence coating 450, and the light that radiates can penetrate electro-acoustic actuator 400 after passing conductive plate 440.In addition, if electrode layer 424, insulating barrier 490 and main film body 422 are made by transparent material, for example main film body 422 is made by transparent FEP, and the light that fluorescence coating 450 sends also can pass main film body 422, electrode layer 424, insulating barrier 490, electrode layer 324, main film body 322 and penetrate electro-acoustic actuator 400 with conductive plate 340.In like manner, the light that is sent by fluorescence coating 350 also can pass main film body 322, electrode layer 324, insulating barrier 490, electrode layer 424, main film body 422 and penetrate electro-acoustic actuator 400 with conductive plate 440.According to electro-acoustic actuator 300 of the present invention, 400 included fluorescence coatings 350,450 by have a plurality of openings 352,452 fluorescence coating is formed, yet, those skilled in the art should be appreciated that above-mentioned fluorescence coating 350,450 also can be comprised of a plurality of fluorescence spacers 350,450.
With reference to figure 5,6a and 6b, the electronic installation 600 of the first form of first embodiment of the invention comprises housing 510, and it has a plurality of openings 514, between the inner surface 512 and outer surface 518 of housing 510.On the inner surface 512 of housing 510, be provided with electro-acoustic actuator 300, wherein the conductive plate 340 of electro-acoustic actuator 300 is arranged on the inner surface 512 of housing 510, and electret diaphragm 320 stacks on the conductive plate 340.In addition, damage for avoiding conductive plate 340 to slide at housing 510, can be between the inner surface 512 of conductive plate 340 and housing 510, a plurality of spacers 570 that setting and fluorescence spacer 350 are corresponding prevent that conductive plate 340 from directly contacting with housing 510.
In the electronic installation 600 according to the first form of first embodiment of the invention, the sound that is produced by electret diaphragm 320 vibrations can be outside opening 514 be sent to housing 510, to allow the user hear.In addition, the light that is sent by fluorescence coating 350 also can penetrate housing 510 from opening 514, to allow the user see.In order to make more light can penetrate housing 510, housing 510 is preferably transparent.
With reference to figure 5,7a and 7b, the electronic installation 700 of the second form of first embodiment of the invention also comprises transparent housing 510 and is arranged on electro-acoustic actuator 300 on the inner surface 512 of housing 510.Different from the electronic installation 600 of the first embodiment is that electret diaphragm 320 is positioned on the inner surface 512 of housing 510, and conductive plate 340 stacks on the top of electret diaphragm 320.Spacer 570 prevents that electrode layer 324 from sliding and damage at housing 510 then between the inner surface 512 of electrode layer 324 and housing 510.
At the electronic installation 700 according to the second form of first embodiment of the invention, the sound that is produced by electret diaphragm 320 vibrations can be outside opening 514 be sent to housing 510, to allow the user hear.In addition, the light that is sent by fluorescence coating 350 also can pass opening 514 and transparent housing 510 ejaculation housings 510, to allow the user see.
With reference to figure 5,8a and 8b, the electronic installation 800 of second embodiment of the invention comprises transparent housing 510, spacer 570 and is arranged on electro-acoustic actuator 400 on the inner surface 512 of housing 510, wherein the conductive plate 340 of electro-acoustic actuator 400 is arranged on the inner surface 512 of housing 510, and electret diaphragm 320 stacks on the conductive plate 340.Spacer 570 then is arranged between the inner surface 512 of conductive plate 340 and housing 510, prevents that conductive plate 340 from sliding and damage at housing 510.
Similarly, the sound that is produced by electret diaphragm 320,420 vibrations can be outside opening 514 be sent to housing 510, to allow the user hear.In addition, the light that is sent by fluorescence coating 350,450 also can pass opening 514 and transparent housing 510 ejaculation housings 510, to allow the user see.
With reference to figure 5,9a and 9b, the electronic installation 900 of third embodiment of the invention is identical with electronic installation 600 substantially, difference is, the electro-acoustic actuator 300 of electronic installation 900 does not comprise spacer 570, and the conductive plate 340 of former electro-acoustic actuator 300 is plated on the inner surface 512 of housing 510, to form conductive layer 940.In Fig. 9 a and 9b and Fig. 6 a and 6b, identical label represents identical element, is not given unnecessary details at this.Similarly, when the electronic installation 900 of operation present embodiment, also need conductive layer 940 and electrode layer 324 input electrical signals, so that electret diaphragm 320 produces vibration according to this electronic signal, thereby sound.
With reference to figure 5,10a and 10b, the electronic installation 1000 of fourth embodiment of the invention is identical with electronic installation 800 substantially, difference is, the electro-acoustic actuator 400 of electronic installation 1000 does not comprise spacer 570, and the conductive plate 340 of former electro-acoustic actuator 400 is plated on the inner surface 512 of housing 510, to form conductive layer 940.In Figure 10 a and 10b and Fig. 8 a and 8b, identical label represents identical element, is not given unnecessary details at this.Similarly, when the electronic installation 1000 of operation present embodiment, also need the first electronic signal to conductive plate 440 and electrode layer 324 inputs and original sound signal homophase, electrode layer 424 and conductive layer 940 are then inputted respectively the second anti-phase electronic signal, so that electret diaphragm 320,420 produces vibration according to described electronic signal, thereby sound.
Be installed on the housing 510 according to electronic installation 600 of the present invention, 700,800,900,1000 included electro-acoustic actuators 300,400, housing 510 can be electronic installation 600,700,800,900,1000 protecgulum, side cover or back of the body lid.Ability and technical staff should be appreciated that these electro-acoustic actuators 300,400 need to electronic installation 600,700,800,900, other elements in 1000, circuit board for example, electric connection can move.Refer again to Fig. 6 a, 6b, 7a, 7b, 8a, 8b, 9a, 9b, 10a, 10b, when electro-acoustic actuator 300 of the present invention, 400 is installed on the dismountable back of the body lid 510 of user, the back of the body covers on 510 the inner surface 512 and is provided with contact 516a, be electrically connected with conductive plate 340, conductive layer 940, be arranged on the back of the body cover on 510 the inner surface 512 contact 516b then with electrode layer 324 electric connections.In addition, on the inner surface 512 of electronic installation 800,1000 back of the body lid 510, also be provided with contact 519a and 519b, conductive plate 440 and the electrode layer 424 with electro-acoustic actuator 400 is electrically connected respectively.Such as Fig. 6 b, 7b, 8b, shown in 9b and the 10b, when covering 510, the back of the body is loaded on electronic installation 600,700,800,900, in the time of on 1000 the main body, contact 516a and 516b can be respectively be positioned at electronic installation 600,700,800,900, the contact 597a of the circuit board 595 on 1000 the main body and 597b electrical contact, contact 519a and 519b (shown in Fig. 8 b and 10b) then respectively with electronic installation 800, contact 598a on the circuit board 595 on 1000 the main body and 598b electrical contact, electronic signal is inputed to conductive plate 340,440, conductive layer 940 and electrode layer 324,424, make electret diaphragm 320,420 according to these electronic signals generation vibrations, thereby sound.
The included spacer of electro-acoustic actuator of the present invention can be the spacer that separates each other, yet those skilled in the art should be appreciated that above-mentioned spacer also can utilize and form a plurality of openings at thin slice and replace it.
Electronic installation according to the present invention can be portable electronic devices, such as being mobile phone, personal digital assistant device or notebook computer etc.Because electro-acoustic actuator of the present invention has sounding and luminous function simultaneously, in the time of therefore on being applied to electronic installation, can reduce the space in the shared electronic installation.In addition, electro-acoustic actuator of the present invention structurally is comprised of many little pronunciations unit, forms the sounding body of array, therefore more can effectively sound than traditional piezo-electric loudspeaker.
Although the present invention is disclosed by above preferred embodiment, right described embodiment limits the present invention, and any those skilled in the art should make various changes or modifications without departing from the spirit and scope of the present invention.Therefore protection scope of the present invention should be as the criterion with the scope that appended claims was defined.
Claims (17)
1. electro-acoustic actuator, this electro-acoustic actuator comprises:
The first conductive plate has a plurality of openings;
The first fluorescence coating is located on the upper surface of described the first conductive plate; And
The first electret diaphragm, stack on the upper surface of described the first fluorescence coating, this first electret diaphragm has the first film main body and the first electrode layer, wherein said the first film main body is with electrostatic charge, and described the first electrode layer is formed on the upper surface of described the first film main body, wherein said the first electrode layer and described the first conductive plate access the first electronic signal, and described the first electret diaphragm produces vibration according to this first electronic signal, thereby sound.
2. electro-acoustic actuator according to claim 1, wherein said the first fluorescence coating has a plurality of openings, and is relative with a plurality of openings on described the first conductive plate respectively.
3. electro-acoustic actuator according to claim 1, wherein said the first electrode layer and described the first film main body are transparent.
4. electronic installation, this electronic installation comprises:
Housing has inner surface, outer surface and through a plurality of openings between described inner surface and the described outer surface; And
Electro-acoustic actuator is arranged on the inner surface of described housing, and this electro-acoustic actuator comprises:
The first conductive plate is positioned on the inner surface of described housing, and has a plurality of openings;
The first fluorescence coating is located on the upper surface of described the first conductive plate; And
The first electret diaphragm, stack on the upper surface of described the first fluorescence coating, and have the first film main body and the first electrode layer, wherein said the first film main body is with electrostatic charge, and described the first electrode layer is formed on the upper surface of described the first film main body, wherein said the first electrode layer and described the first conductive plate access the first electronic signal, and described the first electret diaphragm produces vibration according to this first electronic signal, thereby sound.
5. electronic installation according to claim 4, wherein said electro-acoustic actuator also comprises:
The second electret diaphragm, be located on the first electrode layer of described the first electret diaphragm, this second electret diaphragm has the second main film body and the second electrode lay, and wherein said the second main film body is with electrostatic charge, and described the second electrode lay is formed on the lower surface of described the second main film body;
Insulating barrier is located between described the first electrode layer and the described the second electrode lay;
The second conductive plate is located at the top of described the second main film body, and has a plurality of openings; And
The second fluorescence coating is located between the lower surface of the upper surface of described the second main film body and described the second conductive plate.
6. electronic installation according to claim 5, wherein said the second electrode lay and described the second conductive plate access the second electronic signal.
7. electronic installation according to claim 5, wherein said the second fluorescence coating has a plurality of openings, and is relative with a plurality of openings on described the second conductive plate respectively.
8. electronic installation according to claim 4, this electronic installation also comprises:
A plurality of spacers are located between the inner surface and described the first conductive plate of described housing.
9. electronic installation according to claim 4, wherein said housing is transparent.
10. electronic installation according to claim 5, wherein said housing, the first electrode layer, the second electrode lay, the first film main body and the second main film body are transparent.
11. an electronic installation, this electronic installation comprises:
Housing has inner surface, outer surface and through a plurality of openings between described inner surface and the described outer surface; And
Electro-acoustic actuator is arranged on the inner surface of described housing, and this electro-acoustic actuator comprises:
Electret diaphragm is positioned on the inner surface of described housing, and has main film body and electrode layer, and wherein said main film body is with electrostatic charge, and described electrode layer is formed on the lower surface of described main film body;
Fluorescence coating is located on the upper surface of described main film body; And
Conductive plate stacks on the top of described fluorescence coating, and has a plurality of openings, wherein said electrode layer and described conductive plate access electronic signal, and described electret diaphragm produces vibration according to this electronic signal, thus sound.
12. electronic installation according to claim 11, this electronic installation also comprises:
A plurality of spacers are located between the inner surface and described electrode layer of described housing.
13. electronic installation according to claim 11, wherein said electrode layer and described main film body are transparent.
14. an electronic installation, this electronic installation comprises:
Housing has inner surface, outer surface and through a plurality of openings between described inner surface and the described outer surface; And
Electro-acoustic actuator is arranged on the inner surface of described housing, and this electro-acoustic actuator comprises:
Conductive layer is located on the inner surface of described housing;
The first fluorescence coating is located on the upper surface of described conductive layer; And
The first electret diaphragm, stack on the upper surface of described the first fluorescence coating, and have the first film main body and the first electrode layer, wherein said the first film main body is with electrostatic charge, and described the first electrode layer is formed on the upper surface of described the first film main body, wherein said the first electrode layer and described conductive layer access the first electronic signal, and described the first electret diaphragm produces vibration according to this first electronic signal, thereby sound.
15. electronic installation according to claim 14, wherein said the first fluorescence coating has a plurality of openings, and a plurality of openings with described housing are relative respectively.
16. electronic installation according to claim 14, wherein said electro-acoustic actuator also comprises:
The second electret diaphragm, be located on the first electrode layer of described the first electret diaphragm, this second electret diaphragm has the second main film body and the second electrode lay, and wherein said the second main film body is with electrostatic charge, and described the second electrode lay is formed on the lower surface of described the second main film body;
Insulating barrier is located between described the first electrode layer and the described the second electrode lay;
The second conductive plate is located at the top of described the second main film body, and has a plurality of openings; And
The second fluorescence coating is located between the lower surface of the upper surface of described the second main film body and described the second conductive plate.
17. electronic installation according to claim 16, wherein said the second electrode lay and described the second conductive plate access the second electronic signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910001782 CN101778326B (en) | 2009-01-12 | 2009-01-12 | Flexible cold-light electroacoustic actuator and electronic device using electroacoustic actuator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910001782 CN101778326B (en) | 2009-01-12 | 2009-01-12 | Flexible cold-light electroacoustic actuator and electronic device using electroacoustic actuator |
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| CN101778326A CN101778326A (en) | 2010-07-14 |
| CN101778326B true CN101778326B (en) | 2013-04-03 |
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| CN 200910001782 Expired - Fee Related CN101778326B (en) | 2009-01-12 | 2009-01-12 | Flexible cold-light electroacoustic actuator and electronic device using electroacoustic actuator |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2343811A (en) * | 1998-11-13 | 2000-05-17 | Nec Corp | Transparent piezoelectric speaker in a display device |
-
2009
- 2009-01-12 CN CN 200910001782 patent/CN101778326B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2343811A (en) * | 1998-11-13 | 2000-05-17 | Nec Corp | Transparent piezoelectric speaker in a display device |
Non-Patent Citations (4)
| Title |
|---|
| JP昭和53-6637U 1978.01.20 |
| JP特开2005-158371A 2005.06.16 |
| JP特开2007-110382A 2007.04.26 |
| JP特开平10-191496A 1998.07.21 |
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| CN101778326A (en) | 2010-07-14 |
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