CN101765044B - Minitype moving-coil electroacoustic transducer - Google Patents
Minitype moving-coil electroacoustic transducer Download PDFInfo
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- CN101765044B CN101765044B CN2009102608330A CN200910260833A CN101765044B CN 101765044 B CN101765044 B CN 101765044B CN 2009102608330 A CN2009102608330 A CN 2009102608330A CN 200910260833 A CN200910260833 A CN 200910260833A CN 101765044 B CN101765044 B CN 101765044B
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- electroacoustic transducer
- vibrating diaphragm
- coil
- fpc
- minitype moving
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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
- H04R7/12—Non-planar diaphragms or cones
- H04R7/122—Non-planar diaphragms or cones comprising a plurality of sections or layers
- H04R7/125—Non-planar diaphragms or cones comprising a plurality of sections or layers comprising a plurality of superposed layers in contact
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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
- H04R7/12—Non-planar diaphragms or cones
- H04R7/127—Non-planar diaphragms or cones dome-shaped
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/04—Construction, mounting, or centering of coil
- H04R9/045—Mounting
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The invention provides a minitype moving-coil electroacoustic transducer, which includes an accessory system, a vibrating system and a magnetic circuit system; the accessory system includes a shell; the vibrating system includes a diaphragm and a voice coil; the diaphragm includes a globe-roof part and an corrugated part supporting the diaphragm; the voice coil is also provided with a lead; moreover, the surface of the diaphragm is provided with a conductive coating which connects at least two circuits; the central area of the diaphragm is provided with a flexible circuit board; and the lead is electrically connected with the conductive coating through electrical connection. The design can improve the acoustical property simultaneously when reducing the distortion of the minitype moving-coil electroacoustic transducer, improve the electrical connection property of the minitype moving-coil electroacoustic transducer, and can also simplify the production and assembling processes of the minitype moving-coil electroacoustic transducer, realize the automatic production of products, reduce the production cost, and improve the production efficiency.
Description
Technical field
The present invention is specifically related to a kind of minitype moving-coil electroacoustic transducer.
Background technology
Along with the development in portable consumer electronic product market, a large amount of miniature electro-acoustic device particularly minitype moving-coil electroacoustic transducer has obtained using widely.The operation principle of minitype moving-coil electroacoustic transducer is: thus the ac signal of variation makes the voice coil loudspeaker voice coil up-down vibration that is positioned at magnetic gap drive the vibrational system vibration sounding; Like Figure 14, Figure 15 and shown in Figure 16; The minitype moving-coil electroacoustic transducer of known two magnetic route structure; Its vibrational system comprises vibrating diaphragm 21 and voice coil loudspeaker voice coil 22, and vibrating diaphragm 21 comprises ring portion 211, edge part 213, ball top 214 and the binding part 215 that combines with voice coil loudspeaker voice coil 22, on voice coil loudspeaker voice coil 22, also is provided with lead-in wire 23; The minitype moving-coil electroacoustic transducer distortion of this traditional structure is bigger, is unfavorable for the raising of product acoustical behavior; And when minitype moving-coil electroacoustic transducer long period work or vibrational system amplitude were excessive, broken string caused and is electrically connected drawbacks such as bad easily; The production technology of the minitype moving-coil electroacoustic transducer vibrational system of this traditional structure is comparatively complicated simultaneously, is unfavorable for the reduction of production cost and the raising of production efficiency.
In the minitype moving-coil electroacoustic transducer to above-mentioned traditional structure improves; The Chinese patent CN1010617 that open day is on October 24th, 2007 discloses a kind of design: diaphragm (being vibrating diaphragm) is provided with the conduction region that groove separates with at least two; Voice coil loudspeaker voice coil is installed in the groove of diaphragm, will go between simultaneously is electrically connected with conduction region again.This design; Though solved to a certain extent minitype moving-coil electroacoustic transducer lead-in wire useful life of above-mentioned traditional structure long, be easy to generate the drawback that noise causes distortion etc.; But the voice coil loudspeaker voice coil of this structural design and the packaging technology of vibrating diaphragm are comparatively complicated; Vibrating diaphragm and voice coil loudspeaker voice coil are electrically connected operation and are difficult to operation, are difficult to realize automated production, are unfavorable for the raising of production efficiency and the reduction of production cost.
So, be necessary the minitype moving-coil electroacoustic transducer vibrational system of above-mentioned traditional structure is further improved, to avoid above-mentioned defective.
Summary of the invention
Technical problem to be solved by this invention provides a kind of minitype moving-coil electroacoustic transducer; When reducing the minitype moving-coil electroacoustic transducer distortion, improve acoustical behavior, improve the minitype moving-coil electroacoustic transducer electrical connection properties; Can also simplify the production and the assembling process of minitype moving-coil electroacoustic transducer; Realize the automated production of product, reduced production cost, enhance productivity.
For solving the problems of the technologies described above, technical scheme proposed by the invention is: minitype moving-coil electroacoustic transducer comprises auxiliary system, vibrational system and magnetic circuit system; Said auxiliary system comprises shell; Said vibrational system comprises vibrating diaphragm and voice coil loudspeaker voice coil, and said vibrating diaphragm comprises ball top and the ring portion that supports said vibrating diaphragm, also is provided with lead-in wire on the said voice coil loudspeaker voice coil, and: said vibrating diaphragm surface is provided with and forms the conductive coating of connecting at least two circuit; The central area of said vibrating diaphragm is provided with FPC, and said lead-in wire is electrically connected with said conductive coating through being electrically connected said FPC.This design; When reducing the minitype moving-coil electroacoustic transducer distortion, improve acoustical behavior, improve the minitype moving-coil electroacoustic transducer electrical connection properties; Can also simplify the production and the assembling process of minitype moving-coil electroacoustic transducer; Realize the automated production of product, reduced production cost, enhance productivity.
As a kind of improvement, said vibrating diaphragm is provided with hollow structure, said FPC be combined on the said central area and said flexible circuitry board size greater than the size of said hollow structure.The design is the preferred scheme of the present invention.
As a kind of improvement, said hollow structure is positioned on the central area at ball top of said vibrating diaphragm.Hollow structure is arranged on the central area on ball top and is the preferred implementation process of the present invention.
As a kind of improvement, said hollow structure is positioned on the ball top of said vibrating diaphragm.Hollow structure is arranged on vibrating diaphragm ball top upward is the preferred implementation process of the present invention.
As a kind of improvement, also be respectively equipped with the extension that is suspended on said minitype moving-coil electroacoustic transducer on said vibrating diaphragm and the shell, the circuit on the said conductive coating is electrically connected on the extension of said shell.Extension is set on vibrating diaphragm, helps simplifying the installation process of minitype moving-coil electroacoustic transducer.
As a kind of improvement, said conductive coating is a nickel metallic conduction coating.The conductive coating of nickel metal material is the invention embodiment preferred.
As a kind of improvement, said conductive coating is symmetrically distributed on said vibrating diaphragm.Symmetrical distribution can guarantee the balance of vibrational system, is the preferred implementation process of the invention.
As a kind of improvement, electrode and external electrode in said flexible PCB is provided with, said external electrode is electrically connected with conductive coating in the said ring portion through conducting resinl, and said interior electrode and said lead-in wire combine through welding electricity.This electric connection mode is the invention embodiment preferred.
As a kind of improvement, said interior electrode and external electrode are symmetrically distributed on said FPC.Symmetrical distribution can guarantee the balance of vibrational system.
As a kind of improvement, said minitype moving-coil electroacoustic transducer is circular, square or track shape.Minitype moving-coil electroacoustic transducer circular, square or track shape is the preferred embodiment of the invention.
As a kind of improvement, said minitype moving-coil electroacoustic transducer magnetic circuit system is a two magnetic route structure.
Owing to adopted technique scheme: minitype moving-coil electroacoustic transducer comprises auxiliary system, vibrational system and magnetic circuit system; Said auxiliary system comprises shell; Said vibrational system comprises vibrating diaphragm and voice coil loudspeaker voice coil, and said vibrating diaphragm comprises ball top and the ring portion that supports said vibrating diaphragm, also is provided with lead-in wire on the said voice coil loudspeaker voice coil, and: said vibrating diaphragm surface is provided with and forms the conductive coating of connecting at least two circuit; The central area of said vibrating diaphragm is provided with FPC, and said lead-in wire is electrically connected with said conductive coating through being electrically connected said FPC.When reducing the minitype moving-coil electroacoustic transducer distortion, improve acoustical behavior, improve the minitype moving-coil electroacoustic transducer electrical connection properties; Can also simplify the production and the assembling process of minitype moving-coil electroacoustic transducer; Realize the automated production of product; Reduced production cost, enhanced productivity.
Description of drawings
Fig. 1 is the decomposing schematic representation of the embodiment of the invention one;
Fig. 2 is the structural representation at the embodiment of the invention one vibrating diaphragm and the FPC back side;
Fig. 3 is the embodiment of the invention one vibrating diaphragm and the positive structural representation of FPC;
Fig. 4 is the positive vertical view of the embodiment of the invention one vibrating diaphragm;
Fig. 5 is the embodiment of the invention one vibrating diaphragm and the sketch map that combines of FPC;
Fig. 6 is the vibrating diaphragm front plan view that the embodiment of the invention one is saved the conductive coating improvement project;
Fig. 7 is the sketch map of the embodiment of the invention one;
Fig. 8 is the embodiment of the invention two vibrating diaphragms and the positive structural representation of FPC;
Fig. 9 is the positive structural representations of the embodiment of the invention two FPCs;
Figure 10 is the vertical view at the embodiment of the invention two vibrating diaphragm back sides;
Figure 11 is the structural representation of the embodiment of the invention three vibrating diaphragms and FPC;
Figure 12 is the structural representation of the embodiment of the invention three vibrating diaphragms;
Figure 13 is the structural representation of the embodiment of the invention three;
Figure 14 is the positive vertical views of the embodiment of the invention three further improved vibrating diaphragms;
Figure 15 is the cutaway view of the minitype moving-coil electroacoustic transducer vibrational system of known technology;
Figure 16 is the vertical view of the minitype moving-coil electroacoustic transducer vibrational system of known technology.
Embodiment
Embodiment one:
Minitype moving-coil electroacoustic transducer like Fig. 1, Fig. 2, Fig. 3, Fig. 4 and shown in Figure 5, comprises auxiliary system, vibrational system and magnetic circuit system.Auxiliary system comprises protecgulum 11 and shell 12, and an epitaxial lateral overgrowth of shell 12 is stretched and formed the shell extension 121 that is suspended on minitype moving-coil electroacoustic transducer; Vibrational system comprises vibrating diaphragm 21 and voice coil loudspeaker voice coil 22, also is provided with lead-in wire 23 on the voice coil loudspeaker voice coil 22; Magnetic circuit system is a two magnetic route structure; Comprise respectively first washer 311 that assembles with magnetic conductive board 33, first magnet 321 and second washer 312, second magnet 322 from top to bottom, wherein first washer 311 and first magnet 321 are put for the concentric ring winding with second washer 312 and second magnet 322 respectively; In shell extension 121, also be combined with conducting strip 6 through Shooting Technique.
Vibrating diaphragm 21 peripheries are circular; Comprise that the center is ball top, the ring portion 211 of hollow structure and the edge part 212 that is used for fixing; The part of edge part 212 stretches out and forms the corresponding vibrating diaphragm extension 213 that combines shell extension 121; On the front of vibrating diaphragm ring portion 211, be symmetrically arranged with conductive coating 5, conductive coating 5 is the nickel metal material; On the hollow ball top of vibrating diaphragm 21, be combined with FPC 4, the size of FPC 4 is greater than the hollow structure at said ball top, and the positive electricity of FPC 4 combines vibrating diaphragm 21, and the back side electricity of FPC 4 combines the lead-in wire 23 on the voice coil loudspeaker voice coil 22.
The periphery of FPC 4 is corresponding to vibrating diaphragm 21, and the periphery of FPC 4 also is a circular configuration.Electrode 41a and external electrode 41b in FPC 4 front and backs are respectively arranged with; Interior electrode 41a and external electrode 41b evenly distribute on FPC; And conduct through plated-through hole 42; Interior electrode 41a and external electrode 41b be conductive coating 5 and electric connecting wire 23 respectively, and conductive coating 5 is by the part electric insulation of uncoated conductive coating on the vibrating diaphragm 21 and form two branch circuits that are electrically connected to vibrating diaphragm extension 213; This implementation process preferably goes between and 23 combines through welding procedure with interior electrode 41a, and conductive coating 5 combines through conducting resinl 7 with external electrode 41b.
Fig. 6 is the further improvement of this implementation process, and conductive coating 5 is arranged on the regional area of ring portion 211, and this design can reduce the coated area of conductive coating 5, reduces production costs.Fig. 7 is the minitype moving-coil electroacoustic transducer structural representation after this implementation process assembling.
The corresponding fixedly vibrating diaphragm extension of extension also can be set on protecgulum in this implementation process.This design of this embodiment; When reducing the minitype moving-coil electroacoustic transducer distortion and improving acoustical behavior, improve the minitype moving-coil electroacoustic transducer electrical connection properties; Can simplify the production and the assembling process of minitype moving-coil electroacoustic transducer; Realize the automated production of product, reduced production cost, enhance productivity.
Embodiment two:
This implementation process is with the main distinction of above-mentioned implementation process; The position that conductive coating 5 is provided with is different; Conductive coating in this implementation process is arranged on the back side of vibrating diaphragm 21; Like Fig. 8, Fig. 9 and shown in Figure 10, the back side of vibrating diaphragm 21 is provided with conductive coating 5, the external electrode 41b of FPC 4 be improved to be convenient to vibrating diaphragm 21 on the loop configuration that combine of conductive coating 5 electricity.
This implementation process also can be through the further improvement to embodiment one simultaneously; Coated area through reducing conductive coating reduces cost; Also can come electrode etc. to further improve according to the different structure of the setting of conductive coating and vibrating diaphragm hollow space to flexible PCB; The neither enforcement that influences this implementation process can realize the technique effect of embodiment one equally.
Embodiment three:
This implementation process is that with the main distinction of embodiment one and embodiment two structure of vibrational system is different; Like Figure 11, Figure 12 and shown in Figure 13; Vibrational system is square in this implementation process; Vibrating diaphragm 21, FPC 4 are all square structure, and interior electrode 41a is set to strip structure, and on the minor axis of vibrating diaphragm 21, also is provided with vibrating diaphragm extension 231; Conductive coating 5 is arranged on the positive of vibrating diaphragm 21 and is electrically connected on the vibrating diaphragm extension 213, and this implementation process can realize the technique effect of embodiment one and embodiment two equally.
This implementation process also can be arranged to structure shown in figure 14, conductive coating 5 is arranged on the part of vibrating diaphragm 21, and vibrating diaphragm 21 also can be other shapes such as ellipse, racetrack, the neither enforcement that influences the invention.
In the enforcement of the invention; FPC also can adopt other combination such as top of being installed in vibrating diaphragm; Hollow structure is set on vibrating diaphragm is merely the invention embodiment preferred, the hollow structure at vibrating diaphragm center can be set to different sizes according to actual needs, also can on the vibrating diaphragm of integrative-structure, (the vibrating diaphragm surface is not provided with hollow structure) directly combine FPC; Also can vibrating diaphragm the conductive coating on surface be set to other circuit structures of at least two circuit; Electrode, conductive coating also can be set to other structure, and conductive coating also can be other materials, the above-mentioned neither enforcement that influences the invention.
Claims (10)
1. minitype moving-coil electroacoustic transducer comprises auxiliary system, and said auxiliary system comprises shell, is provided with magnetic circuit system and vibrational system in the said shell successively; Said vibrational system comprises vibrating diaphragm and voice coil loudspeaker voice coil; The center of said vibrating diaphragm is provided with the ball top; Be connected with the ring portion that is used to support said vibrating diaphragm around the said ball top; Also be provided with lead-in wire on the said voice coil loudspeaker voice coil, it is characterized in that: said vibrating diaphragm surface is provided with the conductive coating of at least two circuit of formation; The position that is positioned at the ball top of said vibrating diaphragm is provided with FPC; The two sides of said FPC is equipped with electrode; Said lead-in wire is electrically connected the electrode of said FPC one side, and the electrode electricity of said FPC another side connects said conductive coating.
2. minitype moving-coil electroacoustic transducer as claimed in claim 1; It is characterized in that: the ball tip position of said vibrating diaphragm is provided with hollow structure; Said FPC is combined in said hollow structure place, and said flexible circuitry board size is greater than the size of said hollow structure.
3. minitype moving-coil electroacoustic transducer as claimed in claim 2 is characterized in that: said hollow structure is positioned on the central area at ball top of said vibrating diaphragm.
4. minitype moving-coil electroacoustic transducer as claimed in claim 3; It is characterized in that: also be respectively equipped with the extension that is suspended on said minitype moving-coil electroacoustic transducer on said vibrating diaphragm and the shell, the circuit on the said conductive coating is electrically connected on the extension of said shell.
5. minitype moving-coil electroacoustic transducer as claimed in claim 4 is characterized in that: said conductive coating is a nickel metallic conduction coating.
6. minitype moving-coil electroacoustic transducer as claimed in claim 5 is characterized in that: said conductive coating is symmetrically distributed on said vibrating diaphragm.
7. minitype moving-coil electroacoustic transducer as claimed in claim 6; It is characterized in that: electrode and external electrode in said electrode comprises; Electrode is electrically connected with conductive coating in the said ring portion through conducting resinl in said, and said external electrode and said lead-in wire combine through welding electricity.
8. minitype moving-coil electroacoustic transducer as claimed in claim 7; It is characterized in that: electrode and external electrode are equipped with two in said; Described two interior electrodes are distributed in the one side of said FPC with the central point of said FPC, and described two external electrodes are distributed in the another side of said FPC with the central point of said FPC.
9. like the described minitype moving-coil electroacoustic transducer of the arbitrary claim of claim 1 to 8, it is characterized in that: said vibrating diaphragm is circular, square or track shape.
10. minitype moving-coil electroacoustic transducer as claimed in claim 9 is characterized in that: said minitype moving-coil electroacoustic transducer magnetic circuit system is a two magnetic route structure.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102608330A CN101765044B (en) | 2009-12-12 | 2009-12-12 | Minitype moving-coil electroacoustic transducer |
| KR1020100039140A KR101081653B1 (en) | 2009-12-12 | 2010-04-27 | Moving-Coil Type Mini Microphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102608330A CN101765044B (en) | 2009-12-12 | 2009-12-12 | Minitype moving-coil electroacoustic transducer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101765044A CN101765044A (en) | 2010-06-30 |
| CN101765044B true CN101765044B (en) | 2012-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102608330A Active CN101765044B (en) | 2009-12-12 | 2009-12-12 | Minitype moving-coil electroacoustic transducer |
Country Status (2)
| Country | Link |
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| KR (1) | KR101081653B1 (en) |
| CN (1) | CN101765044B (en) |
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| CN102348153B (en) * | 2010-07-30 | 2014-01-29 | 歌尔声学股份有限公司 | Micro moving-coil type electro-acoustic converter |
| CN101984677B (en) * | 2010-11-02 | 2016-03-09 | 瑞声声学科技(深圳)有限公司 | Acoustical generator |
| CN102611971A (en) * | 2012-01-13 | 2012-07-25 | 瑞声声学科技(深圳)有限公司 | Ball top type vibration system and manufacturing method thereof and loudspeaker |
| CN102572658B (en) * | 2012-01-19 | 2016-12-14 | 歌尔股份有限公司 | Acoustical generator |
| TWI492641B (en) * | 2012-11-13 | 2015-07-11 | Cotron Corp | Vibrating element |
| CN102970643B (en) * | 2012-11-29 | 2015-10-28 | 歌尔声学股份有限公司 | Microspeaker |
| CN102970642B (en) * | 2012-11-29 | 2015-12-02 | 歌尔声学股份有限公司 | Microspeaker |
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| CN105578364B (en) * | 2016-03-21 | 2019-09-17 | 歌尔股份有限公司 | The production method and loudspeaker monomer of vibrational system |
| CN107465980B (en) * | 2017-08-04 | 2023-07-28 | 奥音科技（镇江）有限公司 | Electroacoustic transducer with diaphragm |
| CN107404692B (en) * | 2017-08-04 | 2023-08-01 | 奥音科技（镇江）有限公司 | Front cover applied to electroacoustic transducer |
| US11051106B2 (en) * | 2019-04-29 | 2021-06-29 | Fortemedia, Inc. | Movable embedded microstructure |
| CN112423204A (en) * | 2019-08-21 | 2021-02-26 | 罗冬梅 | Diaphragm and speaker |
| CN110798784A (en) * | 2019-09-30 | 2020-02-14 | 歌尔股份有限公司 | Broadband earphone loudspeaker |
| CN114222227B (en) * | 2021-12-30 | 2024-06-11 | 歌尔股份有限公司 | Vibrating diaphragm, manufacturing method thereof, sound generating device and electronic equipment |
| CN114268887B (en) * | 2021-12-30 | 2024-10-01 | 歌尔股份有限公司 | Vibrating diaphragm, manufacturing method thereof, sound generating device and electronic equipment |
| CN114866910A (en) * | 2022-04-02 | 2022-08-05 | 歌尔股份有限公司 | Sound production device, sound production module and electronic equipment |
| CN114866921B (en) * | 2022-04-29 | 2024-10-11 | 歌尔股份有限公司 | Sound producing device and audio equipment |
| CN114866926B (en) * | 2022-04-29 | 2024-10-11 | 歌尔股份有限公司 | Sound producing device and audio equipment |
| CN117857989B (en) * | 2024-03-04 | 2024-05-28 | 常州丽声科技有限公司 | Flat-plate narrow type loudspeaker |
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| CN1205840C (en) * | 2000-01-27 | 2005-06-08 | 皇家菲利浦电子有限公司 | Electroacoustic transducer having a moving coil and having elastic holding elements for the connecting leads of the moving coil |
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- 2009-12-12 CN CN2009102608330A patent/CN101765044B/en active Active
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2010
- 2010-04-27 KR KR1020100039140A patent/KR101081653B1/en active IP Right Grant
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| WO2002082858A2 (en) * | 2001-04-04 | 2002-10-17 | Koninklijke Philips Electronics N.V. | Sound and vision system |
| CN1697566A (en) * | 2004-05-11 | 2005-11-16 | 星精密株式会社 | Electroacoustic transducer |
| CN101061748A (en) * | 2004-09-23 | 2007-10-24 | 皇家飞利浦电子股份有限公司 | Vibrating element for an electroacoustic transducer |
| CN201623845U (en) * | 2009-12-12 | 2010-11-03 | 歌尔声学股份有限公司 | Mini-type movable coil electroacoustic converting device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101765044A (en) | 2010-06-30 |
| KR20110067003A (en) | 2011-06-20 |
| KR101081653B1 (en) | 2011-11-09 |
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Address after: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Patentee after: Goertek Inc. Address before: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Patentee before: Goertek Inc. |