US20080058002A1 - Electron device - Google Patents
Electron device Download PDFInfo
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- US20080058002A1 US20080058002A1 US11/976,576 US97657607A US2008058002A1 US 20080058002 A1 US20080058002 A1 US 20080058002A1 US 97657607 A US97657607 A US 97657607A US 2008058002 A1 US2008058002 A1 US 2008058002A1
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- Prior art keywords
- voice coil
- section
- planar
- display
- electronic device
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
- H04M1/0266—Details of the structure or mounting of specific components for a display module assembly
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2440/00—Bending wave transducers covered by H04R, not provided for in its groups
- H04R2440/05—Aspects relating to the positioning and way or means of mounting of exciters to resonant bending wave panels
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
- H04R2499/10—General applications
- H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/04—Plane diaphragms
- H04R7/045—Plane diaphragms using the distributed mode principle, i.e. whereby the acoustic radiation is emanated from uniformly distributed free bending wave vibration induced in a stiff panel and not from pistonic motion
Definitions
- the present invention relates to an electronic device that is relatively small such as a portable radio terminal, and in particular, to an electronic device comprising a speaker for audio output and a display for displaying information visually.
- a portable terminal etc. as typified by a cellular phone and a PHS (Personal Handyphone System) are widely used.
- Such electronic device is generally provided with a speaker for conversation or for giving various instructions to the device by voice, and a display for displaying visual information such as characters and images.
- FIG. 1 illustrates the device as an example of a conventional electronic device.
- the electronic device 101 is provided with a liquid crystal display (LCD) 102 at the approximate center of the front surface, and keys 103 and a flat speaker 104 thereunder.
- LCD liquid crystal display
- Japanese Patent No. 2642530 there is disclosed a portable terminal that outputs audio information or image information corresponding to an ID cord from its speaker or display.
- FIGS. 2 and 3 illustrate examples of electronic devices, which are portable terminals.
- the all-in-one portable terminal 111 shown in FIG. 2 is provided with a display 113 and operation keys 114 on the front surface of its main body 112 .
- a miniature speaker 115 and a microphone 116 are disposed respectively on each end.
- the folding portable terminal 121 shown in FIG. 3 is provided with a display 123 and a speaker 124 at the upper side, and operation keys 125 and a microphone 126 at the lower side with a hinge connection 122 at the center.
- an electronic device comprising: a main body, a display disposed at a prescribed position on the e main body for showing information visually, a transparent plate member provided on the surface of the display, and a driving means installed at a prescribed position on the plate member for vibrating the plate member in response to an audio signal.
- the transparent plate member provided on the surface of the display vibrates in response to an audio signal to output sound. Consequently, the display can be situated even over the space where a speaker is supposed to be disposed, and thus obtaining a relatively large display.
- an electronic device comprises: a main body being slender in shape as a hand set, which has a microphone near the end of its front surface; a display disposed in a prescribed space, which includes a space where a speaker is disposed, near the end opposite to the microphone on the main body for showing information visually; a transparent plate member provided on the surface of the display, and a driving means installed at a prescribed position on the plate member for vibrating the plate member in response to an audio signal.
- the display is situated even over the space where the speaker is supposed to be disposed on the slender shape hand set, and the transparent plate member provided on the surface of the display vibrates in response to an audio signal to output sound. Consequently, a relatively large display can be obtained.
- the driving means includes magnets and a voice coil where an audio signal is inputted, either of which is installed on the transparent plate member.
- the driving means for outputting sound is provided with the magnets and the voice coil.
- the magnets or the voice coil is installed on the transparent plate member to vibrate it, and thus enabling sound output.
- the driving means are installed at plural places on the transparent plate member.
- the driving means By installing the driving means at plural places, it is possible to uprate sound output and reduce accommodation space per a driving means.
- the voice coil is a planar coil having a shape of a square frame.
- the magnets are disposed at places corresponding to both inside and outside of the frame of the voice coil on an opposite spaced surface to the surface where the voice coil is installed.
- a planar coil having a shape of a quadrilateral frame is used as the voice coil.
- the magnets are disposed at places corresponding to both inside and outside of the frame of the voice coil on an opposite spaced surface to the surface where the voice coil is installed, and thereby an audio signal is converted to vibrations of either/both of the surfaces.
- plural planar coils are built up in the direction orthogonal to the surface where the coils are installed.
- plural planar coils are built up in the direction orthogonal to the surface where the coils are installed, and thus allowing enough volume of sound to be outputted.
- a driving unit for an electronic device includes a planar voice coil, a resilient member, a support section moveably attached to a plate member of the electronic device by the resilient member, and a first magnet disposed inside the planar voice coil and a second magnet disposed outside the planar voice coil, wherein the first and second magnets are fixedly attached to the support section, wherein the plate member comprises a transparent central section and another section adjacent to the transparent central section, the plate member being moveably attached to the another section by the resilient member.
- the present invention further comprises the planar voice coil comprising a shape of a quadrilateral frame and the first and the second magnets are quadrilateral shaped complementary to the shape of the planar voice coil.
- the present invention further comprises a second planar voice coil adjacent the planar voice coil in a direction orthogonal to a surface on which the planar voice coil is installed.
- FIG. 1 is a plan view showing a conventional electronic device
- FIG. 2 is a plan view showing an example of a conventional portable terminal
- FIG. 3 is a plan view showing a conventional folding portable terminal having a hinge connection in its open state
- FIG. 4 is a front view of a portable terminal as an electronic device according to an embodiment of the present invention.
- FIG. 5 is a back view of a display cover of the embodiment of FIG. 4 ;
- FIG. 6 is a cross section view of a drive taken along the line A-A′ in FIG. 5 ;
- FIG. 7 is a plan view showing a shape of a planar coil of the embodiment.
- FIG. 8 is a cross section view taken along the line B-B′ in FIG. 6 showing a physical relationship among the planar coil, the first magnet and the second magnet;
- FIG. 9 is a cross section view of a drive taken along the line A-A′ in FIG. 5 according to another embodiment of the present invention.
- FIG. 4 is a front view of a portable terminal as an electronic device according to an embodiment of the present invention.
- a portable terminal 201 comprises a main body 202 , a display/speaker section 203 , an operating section 204 , and a microphone 205 .
- the display/speaker section 203 is located at the upper part of the front surface of the main body 202 .
- the operating section 204 is disposed beneath the display/speaker section 203 , similarly to the conventional portable terminal shown in FIG. 2 , and further, the microphone 205 is disposed thereunder.
- a display and a speaker are united and form the display/speaker section 203 .
- the display/speaker section 203 is provided with a display cover 206 in front thereof for protecting the surface of its LCD (liquid crystal display).
- FIG. 5 is a back view of the display cover.
- the display cover 206 comprises a transparent part 211 and a colored part 212 that is arranged so as to surround the transparent part 21 1 .
- the transparent part 211 corresponds to a liquid crystal panel (not shown), and protects the panel from external damages while retaining the display on the panel.
- the colored part 212 may be made of the same flat sheet material as the transparent part 211 , however, it is colored in order to visually distinguish between a display area and other areas on the liquid crystal panel.
- the colored part 212 is provided with a drive 213 that vibrates the display cover 206 to output sound.
- a pair of driving signal wires 214 and 215 extends from the drive 213 .
- FIG. 6 is a section of the drive 213 taken along the line A-A′ in FIG. 5 .
- the drive 213 includes first and second supporting sections 221 and 223 , absorbers 222 , a planar coil 226 , and first and second magnets 231 and 232 .
- the plate supporting section 221 is fixed on the colored part 212 , and supports the second supporting section 223 with the absorbers 222 . There is a small space left between the first and second supporting sections 221 and 223 .
- the absorbers 222 are made of elastic material, and thereby the second supporting section 223 can reciprocate with respect to the first supporting section 221 in the directions indicated by arrow 225 .
- the planar coil 226 winding in a spiral is installed on the first supporting section 221 .
- FIG. 7 illustrates the shape of the planar coil.
- the planar coil 226 is wound to form a rectangular frame so as to be efficiently disposed on the colored part 212 shown in FIG. 5 .
- Each end of the planar coil 226 is electrically connected to one end of the respective driving signal wires 214 and 215 .
- FIG. 8 is a section taken along the line B-B′ in FIG. 6 showing a physical relationship among the planar coil, the first magnet and the second magnet.
- the first magnet 231 and the second magnet 232 are located at positions opposed to, but avoiding the planar coil 226 on the second supporting section 223 shown in FIG. 6 .
- the first magnet 231 is located so that its tip fits in a space 235 within the frame of the planar coil 226 .
- the second magnet 232 is arranged a little outside the outmost circumference of the planar coil 226 .
- an audio signal outputted from an amplifier (not shown) is applied to the planar coil 226 via the driving signal wires 214 and 215 , and thereby sound is outputted from the whole display cover 206 .
- a portable terminal according to the present invention does not need to have sound output holes for a speaker as well as a speaker provided on the front surface differently from a conventional one.
- the second supporting section 223 is supported by the first supporting section 221 .
- the second supporting section 223 may be fixed on an immobile member (not shown), and the first supporting section 221 may be elastically supported by the absorbers 222 .
- FIG. 9 illustrates another embodiment of the present invention, and corresponds to FIG. 6 in the above embodiment.
- the like components are designated by the like reference numerals as in FIG. 6 , and explanation thereof will be omitted.
- a planar coil 301 having the same shape as the planar coil 226 shown in FIG. 7 is directly fixed on the colored part 212 as a substitute for the first supporting section 221 shown in FIG. 6 .
- the planar coil 301 is provided with a plate insulation 302 having a frame shape equal in size to the coil 301 on the surface facing to the second supporting section 223 .
- the same planar coil 226 in the previous embodiment is installed on the insulation 302 to the surface facing the second supporting section 223 .
- two planar coils 301 and 226 , and the insulation 302 are installed so as to form the tri-layer structure, and have a space in the center similarly to the previous embodiment.
- Each end of the planar coil 226 is electrically connected to each end of the planar coil 301 through the insulation 302 by conducting wires 303 and 304 . Accordingly, electric current is passed through in the same direction at both planar coils 226 and 301 .
- the first and second magnets 231 and 232 are disposed on the second supporting section 223 .
- the structure is identical to that of the previous embodiment. Therefore, in a portable terminal of this embodiment, a stronger magnetic field is produced due to the addition of the planar coil 301 to the planar coil 226 .
- the display cover 206 vibrates by driving force stronger than that applied in the previous embodiment in relation to the magnets 231 and 232 . Thus larger volume of sound is outputted.
- planar coils have three layers with an insulation between them in this embodiment, more coils may be added to the layers with interstratifing insulations. Moreover, the coil may be wound around a bobbin disposed perpendicular to the display cover 206 .
- the drive part 213 is located at a side of the display cover 206 in the above embodiments, it is a matter of course that a drive may be installed at any position on a display cover.
- the present invention is naturally applicable to other electronic devices.
- a transparent plate member provided on the surface of a display vibrates in response to an audio signal to output sound. Consequently, the display can be situated even over the space where a speaker is supposed to be disposed, and thus permitting a relatively large display.
- driving means are installed at plural places on the plate member, and therefore it is possible to uprate sound output and reduce accommodation space per a driving means.
- plural planar coils are built up in the direction orthogonal to the surface where the coils are installed, and thus enough volume of sound can be outputted.
Abstract
A driving unit for an electronic device including a planar voice coil, a resilient member, a support section moveably attached to a plate member of the electronic device by the resilient member, and a first magnet disposed inside the planar voice coil and a second magnet disposed outside the planar voice coil, wherein the first and second magnets are fixedly attached to the support section, wherein the plate member comprises a transparent central section and another section adjacent to the transparent central section, the plate member being moveably attached to the another section by the resilient member.
Description
- The present Application is a Continuation Application of U.S. patent application Ser. No. 09/988,681, filed on Nov. 20, 2001. With respect to the prior co-pending U.S. application Ser. No. 09/988,681, this Continuation Application incorporates the claim of priority from Japanese Application No. 2000-361211, filed on Nov. 28, 2000, and claimed under 35 U.S.C. §119. The present Application is assigned of record to NEC Corporation at Reel 012316 and Frame 0484.
- 1. Field of the Invention
- The present invention relates to an electronic device that is relatively small such as a portable radio terminal, and in particular, to an electronic device comprising a speaker for audio output and a display for displaying information visually.
- 2. Description of the Related Art
- Relatively small sized electronic devices, for example, a portable terminal etc. as typified by a cellular phone and a PHS (Personal Handyphone System) are widely used. Such electronic device is generally provided with a speaker for conversation or for giving various instructions to the device by voice, and a display for displaying visual information such as characters and images.
- Japanese Patent Application Laid-Open No. HEI5-191335 discloses a card-sized electronic device.
FIG. 1 illustrates the device as an example of a conventional electronic device. Theelectronic device 101 is provided with a liquid crystal display (LCD) 102 at the approximate center of the front surface, andkeys 103 and aflat speaker 104 thereunder. - In addition, in Japanese Patent No. 2642530, there is disclosed a portable terminal that outputs audio information or image information corresponding to an ID cord from its speaker or display.
- In the meanwhile, the more the device is downsized, the larger proportion of its front surface is occupied by the display part.
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FIGS. 2 and 3 illustrate examples of electronic devices, which are portable terminals. The all-in-oneportable terminal 111 shown inFIG. 2 is provided with adisplay 113 andoperation keys 114 on the front surface of itsmain body 112. In addition, aminiature speaker 115 and amicrophone 116 are disposed respectively on each end. Besides, the foldingportable terminal 121 shown inFIG. 3 is provided with adisplay 123 and aspeaker 124 at the upper side, andoperation keys 125 and amicrophone 126 at the lower side with ahinge connection 122 at the center. - In both examples of
FIGS. 2 and 3 , the data displayed by theportable terminals displays speakers displays - On the other hand, in the electronic device provided with communication facilities such as the
portable terminals speakers displays - As above, problems have been concretely pointed out with respect to the conventional portable terminal. These are commonly observed in a small-sized electronic device having a speaker and a display.
- It is therefore an object of the present invention to provide an electronic device in which accommodation space of a display can be widened to the space where a speaker is disposed.
- In accordance with the first aspect of the present invention, there is provided an electronic device comprising: a main body, a display disposed at a prescribed position on the e main body for showing information visually, a transparent plate member provided on the surface of the display, and a driving means installed at a prescribed position on the plate member for vibrating the plate member in response to an audio signal.
- That is, in the first aspect of the present invention, the transparent plate member provided on the surface of the display vibrates in response to an audio signal to output sound. Consequently, the display can be situated even over the space where a speaker is supposed to be disposed, and thus obtaining a relatively large display.
- In accordance with the second aspect of the present invention, an electronic device comprises: a main body being slender in shape as a hand set, which has a microphone near the end of its front surface; a display disposed in a prescribed space, which includes a space where a speaker is disposed, near the end opposite to the microphone on the main body for showing information visually; a transparent plate member provided on the surface of the display, and a driving means installed at a prescribed position on the plate member for vibrating the plate member in response to an audio signal.
- That is, in the second aspect of the present invention, the display is situated even over the space where the speaker is supposed to be disposed on the slender shape hand set, and the transparent plate member provided on the surface of the display vibrates in response to an audio signal to output sound. Consequently, a relatively large display can be obtained.
- In accordance with the third aspect of the present invention, in the first or the second aspect, the driving means includes magnets and a voice coil where an audio signal is inputted, either of which is installed on the transparent plate member.
- That is, in the third aspect of the present invention, the driving means for outputting sound is provided with the magnets and the voice coil. The magnets or the voice coil is installed on the transparent plate member to vibrate it, and thus enabling sound output.
- In accordance with the fourth aspect of the present invention, in the first or the second aspect, the driving means are installed at plural places on the transparent plate member.
- That is, in the fourth aspect of the present invention, there may be one or more driving means installed on the plate member. By installing the driving means at plural places, it is possible to uprate sound output and reduce accommodation space per a driving means.
- In accordance with the fifth aspect of the present invention, in the first or the second aspect, the voice coil is a planar coil having a shape of a square frame. The magnets are disposed at places corresponding to both inside and outside of the frame of the voice coil on an opposite spaced surface to the surface where the voice coil is installed.
- That is, in the fifth aspect of the present invention, a planar coil having a shape of a quadrilateral frame is used as the voice coil. The magnets are disposed at places corresponding to both inside and outside of the frame of the voice coil on an opposite spaced surface to the surface where the voice coil is installed, and thereby an audio signal is converted to vibrations of either/both of the surfaces.
- In accordance with the sixth aspect of the present invention, in the fifth aspect, plural planar coils are built up in the direction orthogonal to the surface where the coils are installed.
- That is, in the sixth aspect of the present invention, plural planar coils are built up in the direction orthogonal to the surface where the coils are installed, and thus allowing enough volume of sound to be outputted.
- In accordance with another aspect of the present invention, a driving unit for an electronic device includes a planar voice coil, a resilient member, a support section moveably attached to a plate member of the electronic device by the resilient member, and a first magnet disposed inside the planar voice coil and a second magnet disposed outside the planar voice coil, wherein the first and second magnets are fixedly attached to the support section, wherein the plate member comprises a transparent central section and another section adjacent to the transparent central section, the plate member being moveably attached to the another section by the resilient member.
- The present invention further comprises the planar voice coil comprising a shape of a quadrilateral frame and the first and the second magnets are quadrilateral shaped complementary to the shape of the planar voice coil.
- The present invention further comprises a second planar voice coil adjacent the planar voice coil in a direction orthogonal to a surface on which the planar voice coil is installed.
- The objects and features of the present invention will become more apparent from the consideration of the following detailed description taken in conjunction with the accompanying drawings in which:
-
FIG. 1 is a plan view showing a conventional electronic device; -
FIG. 2 is a plan view showing an example of a conventional portable terminal; -
FIG. 3 is a plan view showing a conventional folding portable terminal having a hinge connection in its open state; -
FIG. 4 is a front view of a portable terminal as an electronic device according to an embodiment of the present invention; -
FIG. 5 is a back view of a display cover of the embodiment ofFIG. 4 ; -
FIG. 6 is a cross section view of a drive taken along the line A-A′ inFIG. 5 ; -
FIG. 7 is a plan view showing a shape of a planar coil of the embodiment; -
FIG. 8 is a cross section view taken along the line B-B′ inFIG. 6 showing a physical relationship among the planar coil, the first magnet and the second magnet; and -
FIG. 9 is a cross section view of a drive taken along the line A-A′ inFIG. 5 according to another embodiment of the present invention. - Referring now to the drawings, a description of preferred embodiments of the present invention will be given in detail.
-
FIG. 4 is a front view of a portable terminal as an electronic device according to an embodiment of the present invention. Aportable terminal 201 comprises amain body 202, a display/speaker section 203, anoperating section 204, and amicrophone 205. The display/speaker section 203 is located at the upper part of the front surface of themain body 202. Theoperating section 204 is disposed beneath the display/speaker section 203, similarly to the conventional portable terminal shown inFIG. 2 , and further, themicrophone 205 is disposed thereunder. According to this embodiment, as is described above, a display and a speaker are united and form the display/speaker section 203. The display/speaker section 203 is provided with adisplay cover 206 in front thereof for protecting the surface of its LCD (liquid crystal display). -
FIG. 5 is a back view of the display cover. Thedisplay cover 206 comprises atransparent part 211 and acolored part 212 that is arranged so as to surround the transparent part 21 1. Thetransparent part 211 corresponds to a liquid crystal panel (not shown), and protects the panel from external damages while retaining the display on the panel. Thecolored part 212 may be made of the same flat sheet material as thetransparent part 211, however, it is colored in order to visually distinguish between a display area and other areas on the liquid crystal panel. - The
colored part 212 is provided with adrive 213 that vibrates thedisplay cover 206 to output sound. A pair of drivingsignal wires drive 213. -
FIG. 6 is a section of thedrive 213 taken along the line A-A′ inFIG. 5 . Thedrive 213 includes first and second supportingsections absorbers 222, aplanar coil 226, and first andsecond magnets plate supporting section 221 is fixed on thecolored part 212, and supports the second supportingsection 223 with theabsorbers 222. There is a small space left between the first and second supportingsections absorbers 222 are made of elastic material, and thereby the second supportingsection 223 can reciprocate with respect to the first supportingsection 221 in the directions indicated byarrow 225. On the first supportingsection 221, theplanar coil 226 winding in a spiral is installed. -
FIG. 7 illustrates the shape of the planar coil. Theplanar coil 226 is wound to form a rectangular frame so as to be efficiently disposed on thecolored part 212 shown inFIG. 5 . Each end of theplanar coil 226 is electrically connected to one end of the respectivedriving signal wires -
FIG. 8 is a section taken along the line B-B′ inFIG. 6 showing a physical relationship among the planar coil, the first magnet and the second magnet. Thefirst magnet 231 and thesecond magnet 232 are located at positions opposed to, but avoiding theplanar coil 226 on the second supportingsection 223 shown inFIG. 6 . Thefirst magnet 231 is located so that its tip fits in aspace 235 within the frame of theplanar coil 226. Thesecond magnet 232 is arranged a little outside the outmost circumference of theplanar coil 226. - Consequently, when an audio signal is applied via a pair of the driving
signal wires planar coil 226. Subsequently, the first and second supportingsections second magnets display cover 206 vibrates while resonating. - As is described above, an audio signal outputted from an amplifier (not shown) is applied to the
planar coil 226 via thedriving signal wires whole display cover 206. Namely, a portable terminal according to the present invention does not need to have sound output holes for a speaker as well as a speaker provided on the front surface differently from a conventional one. - Incidentally, in the description of this embodiment, the second supporting
section 223 is supported by the first supportingsection 221. Instead, the second supportingsection 223 may be fixed on an immobile member (not shown), and the first supportingsection 221 may be elastically supported by theabsorbers 222. -
FIG. 9 illustrates another embodiment of the present invention, and corresponds toFIG. 6 in the above embodiment. InFIG. 9 , the like components are designated by the like reference numerals as inFIG. 6 , and explanation thereof will be omitted. In this embodiment, aplanar coil 301 having the same shape as theplanar coil 226 shown inFIG. 7 is directly fixed on thecolored part 212 as a substitute for the first supportingsection 221 shown inFIG. 6 . - The
planar coil 301 is provided with aplate insulation 302 having a frame shape equal in size to thecoil 301 on the surface facing to the second supportingsection 223. In addition, the sameplanar coil 226 in the previous embodiment is installed on theinsulation 302 to the surface facing the second supportingsection 223. In this manner, twoplanar coils insulation 302 are installed so as to form the tri-layer structure, and have a space in the center similarly to the previous embodiment. Each end of theplanar coil 226 is electrically connected to each end of theplanar coil 301 through theinsulation 302 by conductingwires planar coils - As is the case with the previous embodiment, the first and
second magnets section 223. The structure is identical to that of the previous embodiment. Therefore, in a portable terminal of this embodiment, a stronger magnetic field is produced due to the addition of theplanar coil 301 to theplanar coil 226. As a result, thedisplay cover 206 vibrates by driving force stronger than that applied in the previous embodiment in relation to themagnets - While planar coils have three layers with an insulation between them in this embodiment, more coils may be added to the layers with interstratifing insulations. Moreover, the coil may be wound around a bobbin disposed perpendicular to the
display cover 206. Besides, although thedrive part 213 is located at a side of thedisplay cover 206 in the above embodiments, it is a matter of course that a drive may be installed at any position on a display cover. Furthermore, while a description has been given about a portable terminal in the above embodiments, the present invention is naturally applicable to other electronic devices. - As set forth hereinabove, in accordance with the present invention, a transparent plate member provided on the surface of a display vibrates in response to an audio signal to output sound. Consequently, the display can be situated even over the space where a speaker is supposed to be disposed, and thus permitting a relatively large display. In addition, there is no need to provide a portable terminal with sound output holes for a speaker, and therefore it is possible to improve the damp proof effect.
- Moreover, in accordance with an aspect of the present invention, driving means are installed at plural places on the plate member, and therefore it is possible to uprate sound output and reduce accommodation space per a driving means.
- Furthermore, in accordance with another aspect of the present invention, plural planar coils are built up in the direction orthogonal to the surface where the coils are installed, and thus enough volume of sound can be outputted.
- While the preferred embodiments of the present invention have been described using specific terms, such description is for illustrative purposes only, and it is to be understood that changes and variations may be made without departing from the spirit or the scope of the following claims.
Claims (3)
1. A driving unit for an electronic device, comprising:
a planar voice coil;
a resilient member;
a support section moveably attached to a plate member of said electronic device by said resilient member; and
a first magnet disposed inside said planar voice coil and a second magnet disposed outside said planar voice coil, wherein the first and second magnets are fixedly attached to said support section,
wherein said plate member comprises a transparent central section and another section adjacent to the transparent central section, said plate member being moveably attached to said another section by said resilient member.
2. A driving unit for an electronic device according to claim 1 , wherein said planar voice coil comprises a shape of a quadrilateral frame and said first and said second magnets are quadrilateral shaped complementary to said shape of said planar voice coil.
3. A driving unit for an electronic device according to claim 1 , further comprising a second planar voice coil adjacent said planar voice coil in a direction orthogonal to a surface on which said planar voice coil is installed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US11/976,576 US20080058002A1 (en) | 2000-11-28 | 2007-10-25 | Electron device |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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JP2000361211A JP3632594B2 (en) | 2000-11-28 | 2000-11-28 | Electronic equipment |
JP361211/2000 | 2000-11-28 | ||
US09/988,681 US7305248B2 (en) | 2000-11-28 | 2001-11-20 | Electronic device |
US11/976,576 US20080058002A1 (en) | 2000-11-28 | 2007-10-25 | Electron device |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/988,681 Continuation US7305248B2 (en) | 2000-11-28 | 2001-11-20 | Electronic device |
Publications (1)
Publication Number | Publication Date |
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US20080058002A1 true US20080058002A1 (en) | 2008-03-06 |
Family
ID=18832679
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/988,681 Expired - Fee Related US7305248B2 (en) | 2000-11-28 | 2001-11-20 | Electronic device |
US11/976,576 Abandoned US20080058002A1 (en) | 2000-11-28 | 2007-10-25 | Electron device |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
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US09/988,681 Expired - Fee Related US7305248B2 (en) | 2000-11-28 | 2001-11-20 | Electronic device |
Country Status (4)
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US (2) | US7305248B2 (en) |
JP (1) | JP3632594B2 (en) |
CN (1) | CN1327622C (en) |
GB (1) | GB2373398B (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107566965A (en) * | 2017-08-24 | 2018-01-09 | 努比亚技术有限公司 | A kind of vibration-sound generating device and mobile terminal |
US20230214175A1 (en) * | 2018-06-06 | 2023-07-06 | Vivo Mobile Communication Co., Ltd. | Prompting method and mobile terminal |
WO2020097940A1 (en) * | 2018-11-16 | 2020-05-22 | 华为技术有限公司 | Mobile terminal |
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Also Published As
Publication number | Publication date |
---|---|
JP2002164977A (en) | 2002-06-07 |
US20020065113A1 (en) | 2002-05-30 |
GB0128477D0 (en) | 2002-01-23 |
GB2373398A (en) | 2002-09-18 |
US7305248B2 (en) | 2007-12-04 |
CN1327622C (en) | 2007-07-18 |
GB2373398B (en) | 2004-12-01 |
CN1356779A (en) | 2002-07-03 |
JP3632594B2 (en) | 2005-03-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |