[go: up one dir, main page]

CN104185127B - Microspeaker - Google Patents

Microspeaker Download PDF

Info

Publication number
CN104185127B
CN104185127B CN201410469819.2A CN201410469819A CN104185127B CN 104185127 B CN104185127 B CN 104185127B CN 201410469819 A CN201410469819 A CN 201410469819A CN 104185127 B CN104185127 B CN 104185127B
Authority
CN
China
Prior art keywords
voice coil
vibration damping
microspeaker
coil leads
shell
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.)
Active
Application number
CN201410469819.2A
Other languages
Chinese (zh)
Other versions
CN104185127A (en
Inventor
董庆宾
王继宗
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Goertek Inc
Original Assignee
Goertek Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Goertek Inc filed Critical Goertek Inc
Priority to CN201410469819.2A priority Critical patent/CN104185127B/en
Publication of CN104185127A publication Critical patent/CN104185127A/en
Application granted granted Critical
Publication of CN104185127B publication Critical patent/CN104185127B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

The invention discloses a kind of Microspeakers, it is related to electro-acoustic product technical field, including combined protecgulum and shell, vibrational system and magnetic circuit system are contained in the space that the protecgulum and the shell surround, the vibrational system includes the vibrating diaphragm that edge part is fixed between the protecgulum and the shell, the vibrating diaphragm is fixed with voice coil close to the side of the magnetic circuit system, the voice coil includes into the voice coil line of circle and is connected to the voice coil leads at the voice coil line both ends, the voice coil leads include the vibration damping section for the curvilinear structures being connect with the voice coil line, the vibration damping section is connected with the linkage section for being electrically connected with loud speaker external circuit.The present invention solves voice coil leads in the prior art and easily breaks, easily generates the technical problems such as interference to electronic equipment, Microspeaker of the present invention passes through the improvement to voice coil lead structure, solves above-mentioned technical problem well, to effectively raise the properties of product and service life of Microspeaker.

Description

Microspeaker
Technical field
The present invention relates to electro-acoustic product technical field, more particularly to a kind of Microspeaker.
Background technology
Microspeaker is the important acoustic element of portable electronic device, for completing between electric signal and voice signal Conversion, be a kind of energy conversion device.Microspeaker includes combined protecgulum and shell, and protecgulum and shell surround Space in contain vibrational system and magnetic circuit system, vibrational system includes that edge part is fixed on shaking between protecgulum and shell Film, vibrating diaphragm are fixed with voice coil close to the side of magnetic circuit system, and by the voice coil line at circle around forming, two of voice coil line hold voice coil Portion is connected with voice coil leads, and voice coil is electrically connected by voice coil leads with loud speaker external circuit, and voice coil is according to passing through its voice coil line Interior sound wave electric signal moves up and down in the magnetic gap of magnetic circuit system.Shown in Figure 10, voice coil draws existing voice coil structure Line 36f includes the arc segment being connect with voice coil line and the linkage section being electrically connected with external circuit positioned at voice coil leads end, is Guarantee voice coil can move up and down in magnetic gap, be connected with the straightway of certain length between arc segment and linkage section, This straightway would generally be from the shell of loud speaker or the surface cabling of washer.Such structure and cabling mode of existing voice coil leads It has the following defects:
One, it during voice coil moves up and down, is easily loosened between the linkage section and pad of voice coil leads, causes to connect It touches bad or breaking;Even voice coil leads can be pullled broken string so that speaker fail.
Two, when voice coil leads are from washer surface cabling, voice coil leads are easily and washer during voice coil moves up and down It collides, to generate noise, the serious acoustical behavior for affecting loud speaker.
Three, voice coil leads are longer from washer or case surface cable run distance, in can be to the letter of electronic equipment by electric current Number receive and transmitting interfere.
Four, the pulling force of voice coil leads can cause vibrating diaphragm to polarize.
Five, voice coil leads are longer from washer or case surface cable run distance, and vibrating diaphragm splicing tape excessive glue can glue this section of lead Firmly, vibration is caused to break.
Invention content
For disadvantages described above, technical problem to be solved by the invention is to provide a kind of Microspeaker, this is miniature to raise one's voice The case where voice coil leads of device are not in poor contact or broken string, and electronic equipment will not be interfered, acoustical behavior is high, Service life is long.
In order to solve the above technical problems, the technical scheme is that:
The sky that a kind of Microspeaker, including combined protecgulum and shell, the protecgulum and the shell surround In contain vibrational system and magnetic circuit system, the vibrational system include edge part be fixed on the protecgulum and the shell it Between vibrating diaphragm, the vibrating diaphragm is fixed with voice coil close to the side of the magnetic circuit system, the voice coil include into circle voice coil line and The voice coil leads at the voice coil line both ends are connected to, the voice coil leads include the curvilinear structures being connect with the voice coil line Vibration damping section, the vibration damping section is connected with the linkage section for being electrically connected with loud speaker external circuit.
As an implementation, the vibration damping section is helical structure.
As another embodiment, the vibration damping section is gradual change helical structure.
As another embodiment, the vibration damping section is wave structure.
As another embodiment, the vibration damping section is the combination of helical structure and wave structure.
Wherein, the length of the vibration damping section accounts for the 50%~90% of the voice coil leads total length.
Wherein, the voice coil is round rectangle structure, and the voice coil leads are from the straight flange of the voice coil or circular arc point of contact Outlet.
Wherein, the outlet direction of two voice coil leads is consistent with the long axis of the voice coil.
Wherein, the outlet direction of two voice coil leads is consistent with the short axle of the voice coil.
Wherein, the magnetic circuit system includes fixed magnetic conductive board on the housing, is equipped with successively on the magnetic conductive board interior Magnet and interior washer, and it is looped around the external magnet of the internal magnet and the interior washer periphery and outer washer, the outer washer The position of the upper correspondence voice coil leads is equipped with the relief portion of recess.
After using above-mentioned technical proposal, the beneficial effects of the invention are as follows:
Since the voice coil of Microspeaker of the present invention includes into the voice coil line of circle and is connected to the sound at voice coil line both ends Enclose lead, voice coil leads include the vibration damping section for the curvilinear structures being connect with voice coil line, vibration damping section be connected with for outside loud speaker The linkage section of portion's circuit electrical connection.The vibration damping section of curvilinear structures effectively increases the length of voice coil leads, and voice coil is drawn Line has certain elasticity;And do not have longer straightway, from without in shell or washer upward wiring (such as Fig. 3 or Fig. 5 institutes Show).Therefore compared with the prior art, the present invention has the following advantages:
One, it will not be loosened between voice coil leads and pad, and voice coil leads is avoided to be led by vibrating diaphragm bonding glue adhesion What is caused pulls broken string, and to which loud speaker stability of the present invention is high, service life is long.
Two, voice coil leads will not collide with washer, to generate noise, loud speaker acoustical behavior of the present invention It is good.
Three, the signal of electronic equipment will not be received and emitted and generate interference.
Four, the elasticity of voice coil leads can effectively slow down vibrating diaphragm polarization.
Position due to corresponding to voice coil leads on outer washer is equipped with the relief portion of recess, further reduces voice coil leads The probability to collide with washer, to further improve the acoustical behavior of loud speaker.
Easily break, easily to electronic equipment in conclusion Microspeaker of the present invention solves voice coil leads in the prior art Technical problems, the Microspeakers of the present invention such as interference is generated to solve well above-mentioned by the improvement to voice coil lead structure Technical problem, to effectively raise the properties of product and service life of Microspeaker.
Description of the drawings
Fig. 1 is the dimensional decomposition structure diagram of Microspeaker embodiment one of the present invention;
Fig. 2 is the constitutional diagram of Fig. 1;
Fig. 3 is structural schematic diagram when Fig. 2 does not install protecgulum;
Fig. 4 is the structural schematic diagram of the voice coil in Fig. 1;
Fig. 5 is that the structural schematic diagram-of Microspeaker embodiment two of the present invention does not set protecgulum;
Fig. 6 is the structural schematic diagram of the voice coil of Microspeaker embodiment three of the present invention;
Fig. 7 is the structural schematic diagram of the voice coil of Microspeaker example IV of the present invention;
Fig. 8 is the structural schematic diagram of the voice coil of Microspeaker embodiment five of the present invention;
Fig. 9 is the structural schematic diagram of straight flange outlet of the voice coil leads of the present invention from voice coil;
Figure 10 is the structural schematic diagram of voice coil in the prior art;
In figure:20a, shell, 20b, shell, 30, top dome, 32, vibrating diaphragm, 34, voice coil, 36a, voice coil leads, 36b, voice coil Lead, 36c, voice coil leads, 36d, voice coil leads, 36e, voice coil leads, 36f, voice coil leads, 40, magnetic conductive board, 42, internal magnet, 44, external magnet, 46, interior washer, 48, outer washer, 480, relief portion, 50, electrical connector, 52, first connecting portion, 54, second connects Socket part, 60, protecgulum.
Specific implementation mode
With reference to the accompanying drawings and examples, the present invention is further explained.
Involved in this specification to orientation on refer both to loud speaker vibrational system direction, refer both to loud speaker under orientation The direction of magnetic circuit system;Involved in this specification to inside refer both to be located at loud speaker in intracavitary side, outside refers both to be located at Side outside loud speaker inner cavity.
Embodiment one:
As Fig. 1 and Fig. 2 jointly shown in, a kind of Microspeaker is rectangular configuration, including 60 He of combined protecgulum Vibrational system and magnetic circuit system are contained in the space that shell 20a, protecgulum 60 and shell 20a are surrounded jointly.Vibrational system includes Edge part is fixed on the vibrating diaphragm 32 between protecgulum 60 and shell 20a, and vibrating diaphragm 32 is equipped with top dome 30, vibrating diaphragm close to the side of protecgulum 60 32 are fixed with voice coil 34 close to the side of magnetic circuit system.Magnetic circuit system includes the magnetic conductive board 40 being fixed on shell 20a, magnetic conductive board The intermediate position of 40 insides is fixed with internal magnet 42 and interior washer 46 successively, and the edge of 40 inside of magnetic conductive board is fixed with successively External magnet 44 and outer washer 48, internal magnet 42 and interior washer 46 constitute the internal magnetic circuit of loud speaker, 48 structure of external magnet 44 and outer washer At the external magnetic circuit of loud speaker, external magnetic circuit is looped around the periphery of internal magnetic circuit, and is equipped with magnetic gap therebetween.The end position of voice coil 34 In in magnetic gap, voice coil 34 does fortune up and down according to the size and Orientation by the sound wave electric signal in its voice coil line in magnetic gap Dynamic, vibrating diaphragm 32 is vibrated with the up and down motion of voice coil 34, instigates air sounding, to complete the conversion of the energy between electroacoustic.
As shown in figure 4, that voice coil 34 includes into circle and encompass the voice coil line of voice coil ontology, the both ends of voice coil line are connected with Voice coil leads 36a, voice coil leads 36a are formed by the direct tap of voice coil line, or using the Material Strength and toughness than voice coil line Then the material of bigger is made to be connected as one with voice coil line, two voice coil leads 36a mono- are electric current inflow line, and another is Electric current flows out line, is electrically connected with loud speaker external circuit, and voice coil 34 and external circuit are collectively formed a current loop.Sound Circle 34 is round rectangle structure, and voice coil leads 36a draws from the short side and outlet from the tangent point of contact of circular arc, two voice coils of voice coil 34 The outlet direction of line 36a is consistent with the short axle extending direction of voice coil 34.Voice coil leads 36a includes the song being connect with voice coil line The vibration damping section of cable architecture, vibration damping section are connected with the linkage section for being electrically connected with loud speaker external circuit, and linkage section draws for voice coil The end of line 36a welds together with electrical connector 50 (as shown in Figure 1).Vibration damping section is helical structure, the vibration damping of helical structure Section is effectively increased the length of voice coil leads 36a, and voice coil leads 36a is made to have certain elasticity so that voice coil leads 36a will not be electrically connected loosely when voice coil 34 moves up and down or be broken because pullling, and can effectively slow down vibrating diaphragm 32 because of voice coil The pulling force of lead and polarize.
As shown in figure 4, the length of vibration damping section accounts for the 50%~90% of voice coil leads 36a total lengths.Theoretically vibration damping section institute The ratio accounted for is the bigger the better.
As Fig. 1 and Fig. 3 jointly shown in, respectively injection molding is there are one electrical connector 50 on the both sides short side of shell 20a, electrical connector 50 include the first connecting portion 52 being located in shell 20a, and linkage section and the first connecting portion 52 of voice coil leads 36a are welded on one It rises;Further include the second connecting portion 54 being located at outside shell 20a, second connecting portion 54 protrudes the lower face of shell 20a, and raises one's voice Device external circuit is electrically connected.
As shown in figure 3, voice coil leads 36a is welded directly across outer washer 48 and first connecting portion 52, it is seen that sound of the present invention Circle lead 36a, which does not need longer straight section, can meet the up and down motion of voice coil 34, therefore voice coil leads 36a is needed not be along Washer or shell cabling reduce the generation of noise to reduce the probability that voice coil leads 36a collides with washer, Improve the acoustical behavior of loud speaker;It also avoids that the signal of electronic equipment is received and emitted simultaneously and generates interference.
As Fig. 2 and Fig. 3 jointly shown in, the four corners of outer washer 48 are equipped with the relief portion 480 to lower recess, relief portion The 480 further probability for reducing voice coil leads 36a and colliding with outer washer 48, further improve loud speaker Acoustical behavior.Relief portion 480 is only defined two corners of corresponding voice coil leads 36a in fact, but is kept away if only setting two It allows if portion, needs to assemble the installation direction that worker carefully distinguishes outer washer 48 in loud speaker assembling process, increase assembling Difficulty, therefore it is all provided with relief portion 480 in the four corners of outer washer 48, the assembling difficulty of loud speaker is effectively reduced, and improve The production efficiency of loud speaker.
Embodiment two:
Present embodiment and embodiment one are essentially identical, the difference is that:
As shown in figure 5, both sides long sides and circular arc tangent point of contact from outlet, two piece sounds of the voice coil leads 36b from voice coil 34 The outlet direction for enclosing lead 36b is consistent with the long axis extending direction of voice coil 34, two electrical connections being electrically connected with voice coil leads 36b Part 50 is respectively provided in the both sides long side of shell 20b.
Embodiment three:
Present embodiment and embodiment one and embodiment two are essentially identical, the difference is that:
As shown in fig. 6, the vibration damping section of voice coil leads 36c is gradual change helical structure.The helical structure of vibration damping section in diagram Outer diameter changes from small to big and becomes smaller again, the outer diameter of helical structure can also be used by tapering into greatly in practical application, or by it is small gradually The structure to become larger.
Example IV:
Present embodiment and embodiment three are essentially identical, the difference is that:
As shown in fig. 7, the vibration damping section of voice coil leads 36d is plane wave structure.
Embodiment five:
Present embodiment and embodiment three are essentially identical, the difference is that:
As shown in figure 8, the vibration damping section of voice coil leads 36e is the combination of helical structure and wave structure, i.e. vibration damping Duan Youyi Section spiral line and one section of wave are formed by connecting.
As shown in figure 9, voice coil leads are from circular arc cusp position outlet, practical application middle pitch in the respective embodiments described above Enclose lead can also from the straight flange outlet of voice coil, due to voice coil leads from the specific implementation mode of the straight flange outlet of voice coil with it is above-mentioned Each embodiment is almost the same, therefore from the specific implementation mode of the straight flange outlet of voice coil, details are not described herein about voice coil leads.
The present invention uses voice coil leads of the present invention only by taking the loud speaker of rectangular configuration as an example the technical solution of curvilinear structures Detailed elaboration has been carried out, and voice coil leads may be used on any type knot using the technical solution of curvilinear structures in practical application In the loud speaker of structure, such as circle, track type, round rectangle and the isostructural loud speaker of ellipse, and can obtain and raise one's voice with rectangle The identical technique effect of device, those skilled in the art need not make the creative labor according to the description of this specification and can incite somebody to action Voice coil leads are applied to using the technical solutions of curvilinear structures in the loud speaker of other structures, so technical solution be applied to it is other This will not be detailed here for specific implementation mode in structure of loudspeaker.
The structure of voice coil leads of the present invention is not limited to the structure cited by the various embodiments described above, as long as in voice coil leads Including curved section, and this curved section is the length and elasticity for increasing voice coil leads, to obtain prevent voice coil leads broken string, Open circuit prevents vibrating diaphragm from polarizing, and avoids generating interference to electronic equipment, the product for enhancing the technique effect of loud speaker acoustical behavior is equal It drops into protection scope of the present invention.
Involved in the present invention to first connecting portion and second connecting portion name be intended merely to distinguish technical characteristic, not Represent erection sequence between the two, job order and position relationship etc..
The present invention is not limited to above-mentioned specific embodiment, those skilled in the art from above-mentioned design, Without performing creative labour, the various transformation made are within the scope of the present invention.

Claims (10)

1. being received in the space that Microspeaker, including combined protecgulum and shell, the protecgulum and the shell surround Have vibrational system and magnetic circuit system, the vibrational system includes that edge part is fixed on shaking between the protecgulum and the shell Film, the vibrating diaphragm are fixed with voice coil close to the side of the magnetic circuit system, which is characterized in that the voice coil includes into the voice coil of circle Line and the voice coil leads for being connected to the voice coil line both ends, the voice coil leads include the curve being connect with the voice coil line The vibration damping section of structure, the vibration damping section are connected with the linkage section for being electrically connected with loud speaker external circuit;
The electrical connector being electrically connected with the external circuit, institute are equipped on the shell close to the corner of the voice coil leads outlet Voice coil leads are stated to be electrically connected with the electrical connector directly across the linkage section after the outer washer of the magnetic circuit system.
2. Microspeaker according to claim 1, which is characterized in that the vibration damping section is helical structure.
3. Microspeaker according to claim 2, which is characterized in that the vibration damping section is gradual change helical structure.
4. Microspeaker according to claim 1, which is characterized in that the vibration damping section is wave structure.
5. Microspeaker according to claim 1, which is characterized in that the vibration damping section is helical structure and wave structure Combination.
6. according to the Microspeaker described in claim 1 to 5 any claim, which is characterized in that the length of the vibration damping section Degree accounts for the 50%~90% of the voice coil leads total length.
7. Microspeaker according to claim 6, which is characterized in that the voice coil is round rectangle structure, the sound Lead is enclosed from outlet from the straight flange of the voice coil or circular arc point of contact.
8. Microspeaker according to claim 7, which is characterized in that the outlet direction of two voice coil leads with The long axis of the voice coil is consistent.
9. Microspeaker according to claim 7, which is characterized in that the outlet direction of two voice coil leads with The short axle of the voice coil is consistent.
10. Microspeaker according to claim 7, which is characterized in that the magnetic circuit system includes being fixed on outside described Magnetic conductive board on shell is equipped with internal magnet and interior washer on the magnetic conductive board successively, and is looped around the internal magnet and described interior The external magnet of washer periphery and the outer washer, the position that the voice coil leads are corresponded on the outer washer are equipped with the evacuation of recess Portion.
CN201410469819.2A 2014-09-15 2014-09-15 Microspeaker Active CN104185127B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410469819.2A CN104185127B (en) 2014-09-15 2014-09-15 Microspeaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410469819.2A CN104185127B (en) 2014-09-15 2014-09-15 Microspeaker

Publications (2)

Publication Number Publication Date
CN104185127A CN104185127A (en) 2014-12-03
CN104185127B true CN104185127B (en) 2018-10-12

Family

ID=51965808

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410469819.2A Active CN104185127B (en) 2014-09-15 2014-09-15 Microspeaker

Country Status (1)

Country Link
CN (1) CN104185127B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104768111B (en) * 2015-03-31 2018-01-30 歌尔股份有限公司 Suppress the speaker unit and adjustment vibrating diaphragm equilbrium position and pliable method of polarization
CN205029867U (en) * 2015-10-27 2016-02-10 歌尔声学股份有限公司 Speaker casing and speaker monomer
CN109076278A (en) * 2017-04-26 2018-12-21 华为技术有限公司 A kind of horn assembly, electronic equipment and the method for installing horn assembly in the electronic device
CN107147267B (en) * 2017-05-18 2023-11-24 歌尔股份有限公司 Linear vibration motor
CN107182012B (en) * 2017-06-30 2023-09-01 歌尔股份有限公司 Loudspeaker monomer
CN207070344U (en) * 2017-07-18 2018-03-02 歌尔科技有限公司 A kind of loudspeaker
CN109547901B (en) * 2019-01-25 2024-12-03 维仕科技有限公司 Micro speakers
CN110662155B (en) 2019-08-31 2021-11-26 歌尔股份有限公司 Sound production device and assembly method thereof
CN112788495B (en) * 2019-11-08 2025-01-21 歌尔股份有限公司 A centering support piece and a sound generating device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2064141U (en) * 1990-03-19 1990-10-17 周方斌 Voice coil lead wire of loudspeaker
CN102186133A (en) * 2011-06-04 2011-09-14 吉林省神韵电子科技开发有限公司 Ultrathin flat panel loudspeaker
CN102448000A (en) * 2010-10-06 2012-05-09 索尼公司 Speaker unit and active speaker device
CN203193873U (en) * 2013-03-27 2013-09-11 歌尔声学股份有限公司 Loudspeaker apparatus
CN103888878A (en) * 2014-04-09 2014-06-25 上海依镓人电气科技有限公司 Three-dimensional wave coaxial motor-driven loudspeaker
CN204131716U (en) * 2014-09-15 2015-01-28 歌尔声学股份有限公司 Microspeaker

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2064141U (en) * 1990-03-19 1990-10-17 周方斌 Voice coil lead wire of loudspeaker
CN102448000A (en) * 2010-10-06 2012-05-09 索尼公司 Speaker unit and active speaker device
CN102186133A (en) * 2011-06-04 2011-09-14 吉林省神韵电子科技开发有限公司 Ultrathin flat panel loudspeaker
CN203193873U (en) * 2013-03-27 2013-09-11 歌尔声学股份有限公司 Loudspeaker apparatus
CN103888878A (en) * 2014-04-09 2014-06-25 上海依镓人电气科技有限公司 Three-dimensional wave coaxial motor-driven loudspeaker
CN204131716U (en) * 2014-09-15 2015-01-28 歌尔声学股份有限公司 Microspeaker

Also Published As

Publication number Publication date
CN104185127A (en) 2014-12-03

Similar Documents

Publication Publication Date Title
CN104185127B (en) Microspeaker
CN211531292U (en) Sound production device
US20230292037A1 (en) Coaxial horn
CN102811410B (en) Electroacoustic transducer
CN109495819B (en) Sound production device and earphone
WO2025044510A1 (en) Sound production apparatus and electronic device
WO2019015070A1 (en) Loudspeaker
WO2019205656A1 (en) Sound producing device, sound producing module, and electronic terminal
WO2019223320A1 (en) Sound production apparatus and electronic device
CN203691624U (en) Loudspeaker
CN202841505U (en) Electroacoustic transducer
CN106210993B (en) Voice coil, the production method of voice coil and the microphone device using the voice coil
CN102970643A (en) Micro loudspeaker
WO2020134375A1 (en) Sound production device
CN204539453U (en) Sound-producing device
CN101227766A (en) Dynamic Electroacoustic Transducer
CN203301736U (en) A micro loudspeaker
CN204131716U (en) Microspeaker
CN103200476B (en) A kind of receiver and multiple unit receiver group with split type circuit board
CN201185474Y (en) Moving-coil type electro-acoustic conversion device
CN202949562U (en) Miniature loudspeaker
CN203708472U (en) Sounding device
CN201805542U (en) Micro-moving coil transducer and vibrational system thereof
CN201499303U (en) Minitype moving-coil-type electroacoustic transducer wiring device
CN220964974U (en) Display device

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
CB02 Change of applicant information

Address after: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268

Applicant after: Goertek Inc.

Address before: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268

Applicant before: Goertek Inc.

COR Change of bibliographic data
GR01 Patent grant
GR01 Patent grant