WO2003028404A1 - Speaker, speaker module, and electronic equipment using the speaker module - Google Patents
Speaker, speaker module, and electronic equipment using the speaker module Download PDFInfo
- Publication number
- WO2003028404A1 WO2003028404A1 PCT/JP2002/009926 JP0209926W WO03028404A1 WO 2003028404 A1 WO2003028404 A1 WO 2003028404A1 JP 0209926 W JP0209926 W JP 0209926W WO 03028404 A1 WO03028404 A1 WO 03028404A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- diaphragm
- speaker
- closed box
- area
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2807—Enclosures comprising vibrating or resonating arrangements
- H04R1/2838—Enclosures comprising vibrating or resonating arrangements of the bandpass type
- H04R1/2842—Enclosures comprising vibrating or resonating arrangements of the bandpass type for loudspeaker transducers
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
- H04R9/063—Loudspeakers using a plurality of acoustic drivers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2807—Enclosures comprising vibrating or resonating arrangements
- H04R1/283—Enclosures comprising vibrating or resonating arrangements using a passive diaphragm
- H04R1/2834—Enclosures comprising vibrating or resonating arrangements using a passive diaphragm for loudspeaker transducers
Definitions
- the present invention relates to a speaker, a speed module using the speaker, and an electronic device such as a mobile phone device, a communication device, or a game device using the speaker.
- FIG. 20 is a cross-sectional view of a conventional speaker
- FIG. 21 is a partial cross-sectional view illustrating a mounted state of a mobile phone equipped with the speaker.
- the magnetized magnet 1 is sandwiched between the upper plate 2 and the yoke 3 to form an inner magnet type magnetic circuit 4, and the frame 6 is connected to the yoke 3 of the magnetic circuit 4. ing.
- the diaphragm 7 was bonded and bonded to the periphery of the frame 6 so that the voice coil 8 connected to the diaphragm 7 was fitted into the magnetic gap 5 of the magnetic circuit 4.
- FIGS. 21 and 22 show a state where the conventional speaker 10 is mounted on a mobile phone device.
- a display device 12 is disposed on an outer case 11 of the mobile phone device, and a speed 10 is disposed on the opposite side of the display device 12, that is, on a back surface. Further, an operation unit 13 is provided beside the display device 12. Is arranged. Further, a receiver 14 is mounted beside the display device 12.
- the miniaturization and multifunctionality of the electronic device such as a mobile phone, which is a set of the above-mentioned speaker 10
- the miniaturization of the speaker and the degree of freedom of its arrangement are also required.
- the area of the diaphragm 7 is reduced, a reduction in sound pressure level has been a problem.
- a plurality of speakers 10 may be required as shown in FIG. In this case, it is necessary to further reduce the size of the speaker 10.
- An object of the present invention is to provide a speaker that contributes to miniaturization of an electronic device such as a mobile phone device. Disclosure of the invention
- a loudspeaker includes a closed box in which a second diaphragm is arranged on an opening surface, and at least one sounding body acoustically coupled to the closed box.
- the sounding body is provided with a first diaphragm, and the area of the second diaphragm is larger than the area of the first diaphragm.
- the second diaphragm is divided as necessary through a highly flexible material, and the thickness of the second diaphragm can be different depending on the location.
- FIG. 1 is a cross-sectional view of a speaker according to an embodiment of the present invention.
- FIG. 2 is a cross-sectional view of a speaker according to another embodiment of the present invention.
- FIG. 3 Cross-sectional view of the mobile phone device incorporating the speed of Fig. 2.
- FIG. 4 is a cross-sectional view of a mobile phone device according to an embodiment of the present invention.
- FIG. 5 is a cross-sectional view of a speed force according to still another embodiment of the present invention.
- FIG. 6 is a cross-sectional view of a speed force according to still another embodiment of the present invention.
- FIG. 8 is a cross-sectional view of the combined module.
- FIG. 9 is a cross-sectional view of a speaker according to still another embodiment of the present invention.
- FIG. 10 (a) is a cross-sectional view of a speaker according to still another embodiment of the present invention. )
- FIG. 11 is a cross-sectional view of a speaker according to still another embodiment of the present invention.
- FIG. 12 is a cross-sectional view of a module in which the display device is combined with the power of FIG. Cross section of
- FIG. 14 (a) is a cross-sectional view of a spinning force according to still another embodiment of the present invention.
- FIG. 14 (b) is an enlarged cross-sectional view of a main part of FIG. 14 (a).
- FIG. 15 (a) is a sectional view of a speaker according to still another embodiment of the present invention.
- FIG. 15 (b) is an enlarged sectional view of a main part of FIG. 15 (a).
- FIG. 15 (c) Enlarged sectional view of the main part of Fig. 15 (a)
- FIG. 16 is a sectional view of a speaker according to still another embodiment of the present invention.
- FIG. 17 is a sectional view of a speaker according to still another embodiment of the present invention.
- FIG. 19 (a) is a cross-sectional view of a mobile phone device according to an embodiment of the present invention.
- FIG. 19 (b) is an enlarged cross-sectional view of a main part of FIG.
- FIG. 21 is a cross-sectional view of a conventional mobile phone device.
- FIG. 22 is a cross-sectional view of another conventional mobile phone device.
- FIG. 1 is a sectional view of a speaker according to an embodiment of the present invention.
- the speed force according to the first embodiment of the present invention is constituted by a box body 29 in which a substantially planar second diaphragm 30 is arranged in an opening portion and a sounding body 40.
- the sounding body 40 constitutes an inner magnet type magnetic circuit 24 by sandwiching the magnetized magnet 21 between the upper plate 22 and the yoke 23.
- the frame 26 is joined to the magnetic circuit 24 and the first diaphragm 27 is adhered to the periphery of the frame 26, and the voice coil 28 is attached to the first diaphragm 27.
- the voice coil 28 is configured to fit into the magnetic gap 25 of the magnetic circuit 24.
- a box body 29 is joined to a peripheral portion of the frame 26, and a substantially planar second diaphragm 30 is adhered to an opening of the box body 29, and the first diaphragm 27 and the second diaphragm
- the two diaphragms 30 are acoustically coupled by a closed box 31.
- the present embodiment is characterized in that the area of the second diaphragm 30 is larger than that of the first diaphragm 27.
- the shape of the closed box 31 and the positions and shapes of the first and second diaphragms can be arbitrarily designed. As a result, it is possible to use a large diaphragm to prevent a decrease in the sound pressure generated by the speaker, and to achieve a reduction in the size of the mobile phone device and an increase in design freedom.
- an electrodynamic electroacoustic transducer has been described as an example of the sounding body 40.
- the sounding body 40 is not necessarily a electrodynamic electroacoustic transducer, but may be a static electromechanical transducer. Electric and piezoelectric electro-acoustic transducers can also be used.
- the thickness of the second diaphragm 30 depends on the size of the mobile phone device and the large-sized set device, but is set to 0.05 to 10 mm. Can be made thinner.
- the gap size of the closed box arranged below the second diaphragm 30 is also set to 0.01 to 10 mm to further reduce the thickness of mobile phone devices and large set equipment.
- the box 29 and the frame 26 have been described as separate members, the box 29 and the frame 26 may be integrally formed by resin molding or the like.
- a sounding body in which the diaphragm is connected to the magnetic circuit 24 may be manufactured in advance, and fitted into a part of the integrally formed body corresponding to the frame part.
- the speed of the second embodiment of the present invention will be described.
- the difference of the present embodiment from the first embodiment 1 is that the outer periphery of the frame 26 is connected to the end of the box 29.
- the position of first diaphragm 27 can be arranged at the end of second diaphragm 30 using closed box 31. Therefore, even if the large second diaphragm 30 is used, the size of the mobile phone device can be further reduced and the degree of freedom in design can be improved.
- a portion having a large surface area of the outer peripheral portion of the electronic device can be used as second diaphragm 30. This makes it possible to achieve more efficient design of electronic devices.
- the speaker according to the third embodiment will be described.
- the difference of the present embodiment from the first embodiment is that the second diaphragm 30 and the box 29 are made of a transparent material.
- the lower part or the rear part of second diaphragm 30 and box 29 can be seen through.
- components such as the display device can be arranged while effectively using not only the horizontal direction but also the speaker or the back of the second diaphragm 30. Therefore, even if a large second diaphragm 30 is used, the size of the mobile phone device can be further reduced and the design flexibility can be improved. (Embodiment 4)
- FIG. 3 is a partial cross-sectional view illustrating a part of a mobile phone device equipped with a speed control according to a second embodiment of the present invention.
- a module 50 including a display device 41 and a speaker according to the second embodiment is mounted on a mobile phone device.
- Diaphragm 30 and box 29 of the speaker of the present embodiment are formed of a transparent film and a resin.
- the display device 41 is set in the space below the diaphragm 30 and the box to be modularized. Since the diaphragm 30 and the box 29 can be seen through, such a modularization becomes possible. Therefore, even if a large second diaphragm 30 is used, the size of the mobile phone device can be further reduced and the degree of freedom in design can be improved.
- FIG. 4 is a partial cross-sectional view illustrating a mobile phone device 51 equipped with a module 50 according to a fourth embodiment of the present invention.
- a module 50 and an operation unit 42 are combined with an outer case 52 to constitute a main part of the mobile phone device 51.
- the operation unit 42 By arranging the operation unit 42 beside the module 50, it is possible to reduce the size of the mobile phone device 51 and improve the degree of freedom in design.
- a display device 41 is provided in a space below the second diaphragm 30 made of a transparent film. It is also possible to arrange both of the operation units 42, and it is possible to further reduce the size of the mobile phone device 51 and improve the degree of freedom in design.
- the configuration of the present embodiment is not limited to the mobile phone device, and various electronic devices such as communication devices, game devices, liquid crystal televisions, personal computers, and navigation devices. It is also possible to apply it widely.
- FIG. 6 a speaker according to a sixth embodiment of the present invention will be described with reference to FIG.
- This embodiment is different from the second embodiment in that the sounding body 40 is arranged near both ends of the box 29 (the second diaphragm 30).
- the sounding body 40 is arranged near both ends of the box 29 (the second diaphragm 30).
- the shape of the closed box 31 can be freely designed, and the position and shape of each diaphragm can be arbitrarily designed. For example, by increasing the interval between the sounding bodies 40 as shown in FIG. 6, it is also possible to reduce crosstalk between the left and right channels in the case of stereo distribution or the like.
- the area of diaphragm 30 in the present embodiment is at least twice the area of diaphragm 27 used in sounding body 40.
- the sound pressure of the speaker can be increased, but the space between the sounding bodies can be used for placement of other parts.
- a large sound pressure can be secured while keeping the size of the electronic device small.
- an example in which two sounding bodies are used has been described.
- four sounding bodies may be arranged around the diaphragm 30 or one of the plurality of sounding bodies may be used.
- Various application developments such as a buzzer are possible. Arrange a large number of pronunciation bodies like this In this case, the shape of each sounding body can be reduced, which can further contribute to the miniaturization of electronic devices.
- a module 60 is formed by integrating the speed of the sixth embodiment using the transparent second diaphragm 30 and the transparent box 29 with the display device 41.
- the diaphragm 30 is arranged and integrated on the front surface of the display device 41 in a shape that covers the display device 41.
- the module 60 of the present embodiment can be used as a mobile phone device 51 by being incorporated in an outer case 52 as shown in FIG.
- the mobile phone device 51 includes at least a module 60 and an operation unit 42.
- the size and thickness of the mobile phone device 51 can be reduced, and the design flexibility can be improved.
- the arrangement of the speaker module 50 with respect to the outer case 52 of the mobile phone device 51 can be set in either the vertical direction or the horizontal direction according to its function or design.
- both the display device 41 and the operation unit 42 can be arranged in the space below the transparent diaphragm 30, thereby further reducing the size of the mobile phone device 51 and improving the design flexibility. Can be realized.
- the operation section 42 can be operated by applying pressure with a finger or the like from above the transparent second diaphragm 30.
- the mobile phone device has been described.
- the electronic devices according to the present embodiment are not limited to the mobile phone device, but also include communication devices, game devices, liquid crystal televisions, personal computers, navigation devices, and the like. It can be widely applied to various electronic devices.
- the second diaphragm 30 in the third embodiment is configured to be divided into two at a substantially central portion via a highly flexible material 33. With this configuration, it is possible to improve channel separation during stereo reproduction.
- the sound of two sounding bodies is reproduced on one diaphragm 30, so that the sounds of the two sounding bodies are mixed to generate a crosstalk. There is. As a result, channel separation during stereo reproduction may be degraded, and the stereo feeling may be reduced.
- the second diaphragm 30 By dividing the second diaphragm 30 into two substantially at the center as in the present embodiment, it is possible to realize an improvement in channel separation during stereo reproduction.
- Silicone resin, rubber, thermoplastic elastomer, resin foam, or the like can be used as the material 33 for dividing the diaphragm 30 into two parts.
- a silicone resin is used, it is possible to realize high waterproofness and an improvement in channel separation during stereo reproduction stable over a wide temperature range.
- rubber is used, the degree of flexibility can be selected in a wide range, allowing fine adjustment of the channel separation. High productivity and low cost when using thermoplastic elastomers 6
- the display device 41 is arranged below the diaphragm 30. However, they can be seen through without any visual impairment. Therefore, the speaker and the display device 41 according to the present embodiment can be used as the module 70. Further, by modularizing in this way, it is possible to reduce the number of steps in the production of electronic equipment and to rationalize the parts distribution stage, thereby realizing cost reduction.
- FIG. 13 shows that in the first embodiment, the thickness of the second diaphragm 30 varies depending on the location. Shows different speakers.
- the thickness of the outer peripheral portion of diaphragm 30 is reduced to provide thin groove portion A.
- the vibration mode can be adjusted by changing the partial thickness of the diaphragm 30. As a result, the sound pressure frequency characteristics and distortion characteristics of the speaker can be adjusted, and good characteristics can be realized.
- the vibration mode can be adjusted by varying the partial thickness of diaphragm 30. As a result, it is possible to produce a splicing force that can be downsized and has good frequency characteristics and distortion characteristics.
- the vibration mode is suppressed by using the groove 34, and the vibration mode is changed.
- Frequency characteristics and distortion characteristics can be adjusted.
- the groove 34 is provided halfway through the thickness of the diaphragm 30 so that air leakage does not occur.
- the vibration mode of the diaphragm 30 is optimized by sequentially increasing the thickness of the diaphragm 30 from a position near the center of the diaphragm 30 toward the peripheral portion.
- the material thickness to be thin near the center of the diaphragm 30, the diaphragm mass can be reduced, the sound pressure level in the high range can be improved, and the high range limit frequency can be extended.
- the normal thickness is set in the vicinity of the middle part of the diaphragm 30, and the thickness is set thick in the vicinity of the outer periphery, so that the overall weight balance is optimized and the lower part is achieved. Good reproduction is possible. Conversely, as shown in Fig.
- a module 80 including the display unit 41 and the speaker of the present embodiment can be configured. With this configuration, it is possible to further reduce the size of the electronic device and improve the degree of freedom in design while realizing good frequency characteristics.
- a thin plate portion A is provided as shown in FIG. 18 (b) to adjust the frequency characteristics.
- the module 80 can be incorporated into electronic equipment such as mobile phone devices to maintain good frequency characteristics while reducing the production process of electronic equipment and streamlining the parts distribution stage. Thus, cost reduction can be realized.
- the present invention includes a closed box in which the second diaphragm is arranged on the opening surface, and at least one sounding body acoustically coupled to the closed box.
- the sounding body is provided with a first diaphragm, and the area of the second diaphragm is larger than the area of the first diaphragm.
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Multimedia (AREA)
- Telephone Set Structure (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/381,669 US7020302B2 (en) | 2001-09-26 | 2002-09-26 | Speaker, speaker module, and electronic equipment using the speaker module |
| EP02772922.7A EP1343349B1 (en) | 2001-09-26 | 2002-09-26 | Speaker, speaker module, and electronic equipment using the speaker module |
| KR1020037005717A KR100586367B1 (ko) | 2001-09-26 | 2002-09-26 | 스피커, 스피커 모듈 및 이것을 이용한 전자 기기 |
| CN02803017A CN100596240C (zh) | 2001-09-26 | 2002-09-26 | 扬声器、扬声器组件以及使用它的电子设备 |
Applications Claiming Priority (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001293804A JP2003102083A (ja) | 2001-09-26 | 2001-09-26 | スピーカおよびこれを用いたモジュールおよびこれを用いた電子機器 |
| JP2001/293804 | 2001-09-26 | ||
| JP2001/354499 | 2001-11-20 | ||
| JP2001354499A JP2003158787A (ja) | 2001-11-20 | 2001-11-20 | スピーカおよびこれを用いたスピーカモジュールおよびこれを用いた電子機器 |
| JP2002/43022 | 2002-02-20 | ||
| JP2002043022A JP2003244787A (ja) | 2002-02-20 | 2002-02-20 | スピーカおよびこれを用いたモジュールおよびこれを用いた電子機器 |
| JP2002191900A JP3896913B2 (ja) | 2002-07-01 | 2002-07-01 | スピーカおよびこれを用いたモジュールおよびこれを用いた電子機器 |
| JP2002/191900 | 2002-07-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2003028404A1 true WO2003028404A1 (en) | 2003-04-03 |
Family
ID=27482583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2002/009926 Ceased WO2003028404A1 (en) | 2001-09-26 | 2002-09-26 | Speaker, speaker module, and electronic equipment using the speaker module |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US7020302B2 (ja) |
| EP (1) | EP1343349B1 (ja) |
| KR (1) | KR100586367B1 (ja) |
| CN (1) | CN100596240C (ja) |
| TW (1) | TW580841B (ja) |
| WO (1) | WO2003028404A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005009008A1 (en) * | 2003-07-18 | 2005-01-27 | Sony Ericsson Mobile Communications Ab | Speaker assemblies and mobile terminals including the same |
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| JP4196097B2 (ja) * | 2003-10-06 | 2008-12-17 | パナソニック株式会社 | スピーカ、スピーカモジュールおよびこれを用いた電子機器 |
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| US7634102B2 (en) * | 2003-12-22 | 2009-12-15 | Panasonic Corporation | Speaker and device using the same |
| JP2005318227A (ja) * | 2004-04-28 | 2005-11-10 | Matsushita Electric Ind Co Ltd | 電気音響変換器およびこれを用いた電子機器 |
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| KR101919454B1 (ko) * | 2017-07-31 | 2018-11-16 | 엘지디스플레이 주식회사 | 디스플레이 장치 및 이를 이용한 컴퓨팅 장치 |
| KR102593965B1 (ko) * | 2017-09-11 | 2023-10-25 | 엘지디스플레이 주식회사 | 디스플레이 장치 |
| US10587949B1 (en) | 2018-03-28 | 2020-03-10 | Paul N. Hagman | Acoustically tuned face panel for speaker system |
| KR102668665B1 (ko) | 2019-01-30 | 2024-05-23 | 삼성디스플레이 주식회사 | 표시 장치 |
| CN111954135B (zh) * | 2020-08-19 | 2025-02-14 | 苏州礼乐乐器股份有限公司 | 一种带音梁及音隧的全频段高音质电子产品扬声器 |
| CN111954124B (zh) * | 2020-08-19 | 2025-07-25 | 苏州礼乐乐器股份有限公司 | 一种带音梁及音隧的全频段高音质平面谐振扬声器 |
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- 2002-09-26 WO PCT/JP2002/009926 patent/WO2003028404A1/ja not_active Ceased
- 2002-09-26 KR KR1020037005717A patent/KR100586367B1/ko not_active Expired - Fee Related
- 2002-09-26 EP EP02772922.7A patent/EP1343349B1/en not_active Expired - Lifetime
- 2002-09-26 US US10/381,669 patent/US7020302B2/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2005009008A1 (en) * | 2003-07-18 | 2005-01-27 | Sony Ericsson Mobile Communications Ab | Speaker assemblies and mobile terminals including the same |
| US7069061B2 (en) | 2003-07-18 | 2006-06-27 | Sony Ericsson Mobile Communications Ab | Speaker assemblies and mobile terminals including the same |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN1476734A (zh) | 2004-02-18 |
| EP1343349A1 (en) | 2003-09-10 |
| EP1343349A4 (en) | 2009-04-01 |
| KR100586367B1 (ko) | 2006-06-08 |
| US7020302B2 (en) | 2006-03-28 |
| CN100596240C (zh) | 2010-03-24 |
| TW580841B (en) | 2004-03-21 |
| EP1343349B1 (en) | 2013-04-10 |
| KR20030048076A (ko) | 2003-06-18 |
| US20040037441A1 (en) | 2004-02-26 |
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