CN203368752U - Mems microphone - Google Patents
Mems microphone Download PDFInfo
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- CN203368752U CN203368752U CN 201320445826 CN201320445826U CN203368752U CN 203368752 U CN203368752 U CN 203368752U CN 201320445826 CN201320445826 CN 201320445826 CN 201320445826 U CN201320445826 U CN 201320445826U CN 203368752 U CN203368752 U CN 203368752U
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- circuit board
- shell
- mems microphone
- electrically connected
- mems
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- 239000007795 chemical reaction product Substances 0.000 claims description 21
- 239000002184 metal Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 101001045744 Sus scrofa Hepatocyte nuclear factor 1-beta Proteins 0.000 claims description 6
- 238000009434 installation Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 241000218202 Coptis Species 0.000 description 2
- 235000002991 Coptis groenlandica Nutrition 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model discloses an MEMS microphone and relates to the technical field of acoustical-electrical products. The MEMS microphone comprises a housing and an MEMS chip received in the housing, wherein the housing is a cylinder structure with at least one open end, the open end of the housing is covered by the first circuit board, and the MEMS chip is buckled on the first circuit board. Sound apertures are arranged on the first circuit board at a place corresponding to the cavity of the MEMS chip, and the other end of the housing is covered by the second circuit board. A pad for electrically connecting the MEMS microphone and terminal products is arranged on the side of the second circuit board away from the housing, and the first circuit board and the second circuit board are electrically connected through an electric connecting piece arranged outside the housing. The MEMS microphone solves the problem that a conventional MEMS microphone can not satisfy the requirements of easy installation and high acoustic performance simultaneously. The MEMS microphone can be conveniently connected with a terminal product and has high acoustic performance.
Description
Technical field
The utility model relates to the acoustic-electric product technical field, particularly a kind of MEMS microphone.
Background technology
Along with the develop rapidly of portable electronic terminal, as the microphone of the important acoustic element of portable electronic terminal, also constantly doing and improving.Be applied at present the MEMS(Micro-Electro-Mechanic System in portable electronic terminal) microphone mainly contains Bottom(sound hole and is positioned at bottom) type MEMS microphone and TOP(sound hole be positioned at top) type MEMS microphone.
As shown in Figure 1, Bottom type MEMS microphone comprises shell 20a and the base plate 80a be combined as a whole, the inboard of base plate 80a is provided with MEMS chip 30, the position of the inner chamber of the upper corresponding MEMS chip 30 of base plate 80a has sound hole 90a, and the outside of base plate 80a is provided with for being electrically connected to the pad 40 of MEMS chip 30 and end product circuit board.The rear operatic tunes of the MEMS microphone of this type is large, and the front operatic tunes is little, highly sensitive, and acoustical behavior is good.But the structural requirement to end product that it is installed is higher, needs the circuit board of end product also to be provided with perforate, for sound wave provides passage, therefore can not meet the topology requirement of some end products.
As shown in Figure 2, Top type MEMS microphone comprises shell 20b and the base plate 80b be combined as a whole, the inboard of base plate 80b is provided with MEMS chip 30, and the top of shell 20b is provided with sound hole 90b, and the outside of base plate 80b is provided with for being electrically connected to the pad 40 of MEMS chip 30 and end product circuit board.The front operatic tunes of the MEMS microphone of this type is large, and the rear operatic tunes is little, and its acoustical behavior is poorer than Bottom type MEMS microphone, but its structural requirement to end product need to not offered channel of acoustic wave the end of than on the circuit board of end product.
At present, some portable electronic terminal requires the MEMS microphone to have the acoustical behavior of Bottom type MEMS microphone, above-mentioned two kinds of MEMS microphones require again the MEMS microphone consistent with combination and the Top type MEMS microphone of end product, therefore all can't meet the requirement of this kind of portable electronic terminal.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of MEMS microphone, this MEMS microphone had both had the acoustical behavior of Bottom type MEMS microphone, the mounting means that has again Top type MEMS microphone, can meet the high standard requirement of some portable electronic terminals.
For solving the problems of the technologies described above, the technical solution of the utility model is:
A kind of MEMS microphone; comprise shell and be contained in the MEMS chip in described shell; the tubular structure that described shell is at least one end opening; one openend of described shell is coated with first circuit board; described MEMS chip button is located on described first circuit board, and on described first circuit board, the position of corresponding described MEMS chip inner chamber is provided with the sound hole; The other end of described shell is coated with second circuit board, and described second circuit board is provided with for being electrically connected to the pad of described MEMS microphone and end product away from a side of described shell; Described first circuit board and described second circuit board are electrically connected to by the electrical connector that is arranged on the described shell outside.
Wherein, described first circuit board and described second circuit board all protrude described shell with respect to an end of described shell homonymy, and described first circuit board is electrically connected to by described electrical connector with the position that described second circuit board protrudes described shell.
As a kind of execution mode, the tubular structure that described shell is an end opening, described electrical connector is the tertiary circuit plate be arranged between the position that described first circuit board and described second circuit board protrude described shell, the sidewall of described tertiary circuit plate and described shell fits tightly, and two end faces of described tertiary circuit plate are electrically connected to described first circuit board and described second circuit board respectively.
As another kind of execution mode, the tubular structure that described shell is an end opening, described electrical connector is the tertiary circuit plate be arranged between the position that described first circuit board and described second circuit board protrude described shell, described tertiary circuit plate is FPCB, and described tertiary circuit plate is electrically connected to described first circuit board and described second circuit board respectively away from the side of described shell.
As another execution mode, the tubular structure that described shell is an end opening, described electrical connector is that described first circuit board protrudes the first extension that the position of described shell is provided with, described the first extension extends to described second circuit board along the sidewall of described shell, and the end of described the first extension is electrically connected to described second circuit board.
As another execution mode, the tubular structure that described shell is an end opening, described electrical connector is that described second circuit board protrudes the second extension that the position of described shell is provided with, described the second extension extends to described first circuit board along the sidewall of described shell, and the end of described the second extension is electrically connected to described first circuit board.
As another execution mode, the tubular structure that described shell is both ends open, described electrical connector is the tertiary circuit plate be arranged between the position that described first circuit board and described second circuit board protrude described shell, the sidewall of described tertiary circuit plate and described shell fits tightly, and two end faces of described tertiary circuit plate are electrically connected to described first circuit board and described second circuit board respectively.
As another execution mode, the tubular structure that described shell is both ends open, described electrical connector is the tertiary circuit plate be arranged between the position that described first circuit board and described second circuit board protrude described shell, described tertiary circuit plate is FPCB, and described tertiary circuit plate is electrically connected to described first circuit board and described second circuit board respectively away from the side of described shell.
As another execution mode, the tubular structure that described shell is both ends open, described electrical connector is that described first circuit board protrudes the first extension that the position of described shell is provided with, described the first extension extends to described second circuit board along the sidewall of described shell, and the end of described the first extension is electrically connected to described second circuit board.
As another execution mode, the tubular structure that described shell is both ends open, described electrical connector is that described second circuit board protrudes the second extension that the position of described shell is provided with, described the second extension extends to described first circuit board along the sidewall of described shell, and the end of described the second extension is electrically connected to described first circuit board.
After having adopted technique scheme, the beneficial effects of the utility model are:
Due to the shell of the utility model MEMS microphone tubular structure that is at least one end opening, one openend of shell is coated with first circuit board, MEMS chip button is located on first circuit board, the other end of shell is coated with second circuit board, and second circuit is provided with for being electrically connected to the pad of MEMS microphone and end product; Between first circuit board and second circuit board, by the electrical connector that is arranged on the shell outside, be electrically connected to.The pad be arranged on same circuit board with the MEMS chip in existing Bottom type MEMS microphone has been moved on on the circuit board of the shell other end, and two circuit boards are electrically connected to, thereby the MEMS chip is electrically connected to pad, when the utility model MEMS microphone is installed, the circuit board of pad and end product is welded, now the sound hole is positioned at the end of MEMS microphone away from pad, so need on the circuit board of terminal, perforate not provide channel of acoustic wave, therefore consistent with the mounting means of Top type MEMS microphone, and retained the acoustical behavior of Bottom type MEMS microphone, facilitated and being connected of end product, and met the requirement of the high acoustical behavior of end product.
Visible, the utility model MEMS microphone solved in the prior art MEMS microphone be difficult to meet simultaneously conveniently install, the high technical problem of acoustical behavior again.The utility model MEMS microphone is convenient to be connected with end product, has again higher acoustical behavior simultaneously.
The accompanying drawing explanation
Fig. 1 is the structural representation of Bottom type MEMS microphone in background technology;
Fig. 2 is the structural representation of Top type MEMS microphone in background technology;
Fig. 3 is the structural representation of the utility model MEMS microphone embodiment mono-;
Fig. 4 is the vertical view of Fig. 3;
Fig. 5 is the upward view of Fig. 3;
Fig. 6 is the structural representation of the utility model MEMS microphone embodiment bis-;
Fig. 7 is the structural representation of the utility model MEMS microphone embodiment tri-;
Fig. 8 is the structural representation of the utility model MEMS microphone embodiment tetra-;
Fig. 9 is the structural representation of the utility model MEMS microphone embodiment five;
Figure 10 is the structural representation of the utility model MEMS microphone embodiment six;
Figure 11 is the structural representation of the utility model MEMS microphone embodiment seven;
Figure 12 is the structural representation of the utility model MEMS microphone embodiment eight;
In figure: 20a, shell, 20b, shell, 20c, shell, 20d, shell, 30, MEMS chip, 40, pad, 50a, first circuit board, 50b, first circuit board, 52, the first protuberance, the 54, first extension, 60a, second circuit board, 60b, second circuit board, 62, the second protuberance, the 64, second extension, 70a, tertiary circuit plate, 70b, tertiary circuit plate, 80a, base plate, 80b, base plate, 90a, sound hole, 90b, sound hole, 90c, sound hole.
Embodiment
Below in conjunction with drawings and Examples, further set forth the utility model.
Embodiment mono-:
As shown in Fig. 3, Fig. 4 and Fig. 5 are common, a kind of MEMS microphone, for rectangular configuration, comprise shell 20c, the tubular structure that shell 20c is an end opening, the openend of shell 20c is coated with first circuit board 50a, the position that first circuit board 50a is positioned at shell 20c is provided with MEMS chip 30, it is upper that MEMS chip 30 buttons are located at first circuit board 50a, and be electrically connected to first circuit board 50a by two gold threads, and the position of upper corresponding MEMS chip 30 inner chambers of first circuit board 50a is provided with sound hole 90c.The other end of shell 20c is coated with second circuit board 60a, and second circuit board 60a is provided with four for being electrically connected to the pad 40 of MEMS chip 30 and end product circuit board away from the side of shell 20c.The side of first circuit board 50a is provided with the first protuberance 52 that protrudes shell 20c; The side that second circuit board 60a is identical is provided with the second protuberance 62 that protrudes shell 20c.Be provided with electrical connector between the first protuberance 52 and the second protuberance 62, electrical connector is tertiary circuit plate 70a, the side of tertiary circuit plate 70a fits tightly on the sidewall of shell 20c, the both ends of the surface of tertiary circuit plate 70a are separately fixed on first circuit board 50a and second circuit board 60a, and with first circuit board 50a and second circuit board 60a, be electrically connected to respectively, thereby MEMS chip 30 is electrically connected to pad 40.
As shown in Figure 3, shell 20c is metal shell, and metal shell has good shield effectiveness, can reduce interference, promotes the acoustical behavior of MEMS microphone.
As shown in Figure 3, first circuit board 50a and second circuit board 60a are PCB(Printed Circuit Board), tertiary circuit plate 70a is PCB or FPCB(Flexible Printed Circuit Board).
As shown in Figure 3, be equipped with circuit structure on first circuit board 50a, second circuit board 60a and tertiary circuit plate 70a, as for concrete circuit structure, be not invention main points of the present utility model, and circuit those skilled in the art of this kind of simple electric connection mode can design multiple easily, therefore no longer describe in detail inferior.
As shown in Figure 3, the operation principle of the present embodiment MEMS microphone is as follows:
Sound wave enters by sound hole 90c, and act on the vibrating diaphragm of MEMS chip 30, vibrating diaphragm vibrates along with the power of sound wave, MEMS chip 30 is converted to the vibration of the different amplitudes of vibrating diaphragm the signal of telecommunication of variation, the signal of telecommunication is transferred to end product by gold thread, first circuit board 50a, tertiary circuit plate 70a, second circuit board 60a and pad 40, thereby completes the conversion of acoustic-electric.After the utility model MEMS microphone is installed on end product, its sound hole 90c is away from the circuit board of end product, end product need to perforate not provide channel of acoustic wave for it on circuit board, therefore its mounting means is consistent with the mounting means of Top type MEMS microphone of the prior art, can be connected with end product very easily; The rear operatic tunes due to the utility model MEMS microphone is large again, and the front operatic tunes is little, therefore its structure is consistent with the structure of Bottom type MEMS microphone of the prior art, has the advantages such as sensitivity height, and acoustical behavior is high.Thereby the utility model MEMS microphone has the acoustical behavior technical characterstic high, easy for installation of portable electronic terminal requirement.
Embodiment bis-:
As shown in Figure 6, present embodiment and embodiment mono-are basic identical, and its difference is:
Present embodiment and tertiary circuit plate 70a(in embodiment mono-are as shown in Figure 3) compare for the FPCB material, more firm in conjunction with obtaining between tertiary circuit plate 70b and first circuit board 50a and second circuit board 60a in present embodiment, can not open circuit or the phenomenon of loose contact, the stability of MEMS microphone is higher.
Embodiment tri-:
As shown in Figure 7, present embodiment and embodiment mono-are basic identical, and its difference is:
Electrical connector be first circuit board 50b protrude the position of shell 20c that be provided with the first extension 54 first circuit board 50b one, the first extension 54 extends to second circuit board 60a along the sidewall of shell 20c, the end of the first extension 54 is fixedly connected with second circuit board 60a, and is electrically connected to second circuit board 60a.
Present embodiment is compared with embodiment mono-, and its structure is more simple, and processing technology thereof is easy.
Embodiment tetra-:
As shown in Figure 8, present embodiment and embodiment mono-are basic identical, and its difference is:
Electrical connector be second circuit board 60b protrude the position of shell 20c that be provided with the second extension 64 second circuit board 60b one, the second extension 64 extends to first circuit board 50a along the sidewall of shell 20c, the end of the second extension 64 is fixedly connected with first circuit board 50a, and is electrically connected to first circuit board 50a.
Present embodiment is compared with embodiment mono-, and its structure is more simple, and processing technology thereof is easy.
Embodiment five:
As shown in Figure 9, present embodiment and embodiment mono-are basic identical, and its difference is:
The tubular structure that shell 20d is both ends open.The material of shell 20d can be selected a kind of in metal, plastics and PCB.
Present embodiment is compared with embodiment mono-, and its shield effectiveness is not as embodiment mono-, and interference free performance is poor, but it has lacked crust on attach structure, therefore its height dimension is less, profile is thinner, preferably being arranged on thinner portable electronic terminal.
Embodiment six:
As shown in figure 10, present embodiment and embodiment bis-are basic identical, and its difference is:
The tubular structure that shell 20d is both ends open.The material of shell 20d can be selected a kind of in metal, plastics and PCB.
Present embodiment is compared with embodiment bis-, and its shield effectiveness is not as embodiment bis-, and interference free performance is poor, but it has lacked crust on attach structure, therefore its height dimension is less, profile is thinner, preferably being arranged on thinner portable electronic terminal.
Embodiment seven:
As shown in figure 11, present embodiment and embodiment tri-are basic identical, and its difference is:
The tubular structure that shell 20d is both ends open.The material of shell 20d can be selected a kind of in metal, plastics and PCB.
Present embodiment is compared with embodiment tri-, and its shield effectiveness is not as embodiment tri-, and interference free performance is poor, but it has lacked crust on attach structure, therefore its height dimension is less, profile is thinner, preferably being arranged on thinner portable electronic terminal.
Embodiment eight:
As shown in figure 12, present embodiment and embodiment tetra-are basic identical, and its difference is:
The tubular structure that shell 20d is both ends open.The material of shell 20d can be selected a kind of in metal, plastics and PCB.
Present embodiment is compared with embodiment tetra-, and its shield effectiveness is not as embodiment tetra-, and interference free performance is poor, but it has lacked crust on attach structure, therefore its height dimension is less, profile is thinner, preferably being arranged on thinner portable electronic terminal.
First circuit board and second circuit board in the utility model, first circuit board and tertiary circuit plate, tertiary circuit plate and fixed form between second circuit board can adopt welding, bonding, joggle or buckle to be connected etc.
" first circuit board " named in the utility model, " second circuit board " and " tertiary circuit plate " are just the difference technical characterictic, do not represent erection sequence between the three and job order etc.
" the first protuberance " named in the utility model and " the second protuberance " are just the difference technical characterictic, do not represent erection sequence between the two and job order etc.
" the first extension " named in the utility model and " the second extension " are just the difference technical characterictic, do not represent erection sequence between the two and job order etc.
The technical scheme that the utility model is converted to Top type MEMS microphone by Bottom type MEMS microphone not merely is applicable to above-described embodiment, above-described embodiment just describes in detail for the MEMS microphone of rectangle, in practical application, this technical scheme is equally applicable in the MEMS microphone of circle, track type or round rectangle, those skilled in the art do not need to pay creative work and just the technical program can be transplanted in the MEMS microphone of above-mentioned shape, therefore be not described in detail in this.
The utility model is not limited to above-mentioned concrete execution mode, and those of ordinary skill in the art is from above-mentioned design, and without performing creative labour, all conversion of having done, within all dropping on protection range of the present utility model.
Claims (10)
1.MEMS microphone; comprise shell and be contained in the MEMS chip in described shell; it is characterized in that; the tubular structure that described shell is at least one end opening; one openend of described shell is coated with first circuit board; described MEMS chip button is located on described first circuit board, and on described first circuit board, the position of corresponding described MEMS chip inner chamber is provided with the sound hole; The other end of described shell is coated with second circuit board, and described second circuit board is provided with for being electrically connected to the pad of described MEMS microphone and end product away from a side of described shell; Described first circuit board and described second circuit board are electrically connected to by the electrical connector that is arranged on the described shell outside.
2. MEMS microphone according to claim 1, it is characterized in that, described first circuit board and described second circuit board all protrude described shell with respect to an end of described shell homonymy, and described first circuit board is electrically connected to by described electrical connector with the position that described second circuit board protrudes described shell.
3. MEMS microphone according to claim 2, it is characterized in that, described electrical connector is the tertiary circuit plate be arranged between the position that described first circuit board and described second circuit board protrude described shell, and the two ends of described tertiary circuit plate are electrically connected to described first circuit board and described second circuit board respectively.
4. MEMS microphone according to claim 3, is characterized in that, the sidewall of described tertiary circuit plate and described shell fits tightly, and two end faces of described tertiary circuit plate are electrically connected to described first circuit board and described second circuit board respectively.
5. MEMS microphone according to claim 3, is characterized in that, described tertiary circuit plate is FPCB, and described tertiary circuit plate is electrically connected to described first circuit board and described second circuit board respectively away from the side of described shell.
6. MEMS microphone according to claim 2, it is characterized in that, described electrical connector is that described first circuit board protrudes the first extension that the position of described shell is provided with, described the first extension extends to described second circuit board along the sidewall of described shell, and the end of described the first extension is electrically connected to described second circuit board.
7. MEMS microphone according to claim 2, it is characterized in that, described electrical connector is that described second circuit board protrudes the second extension that the position of described shell is provided with, described the second extension extends to described first circuit board along the sidewall of described shell, and the end of described the second extension is electrically connected to described first circuit board.
8. according to the described MEMS microphone of claim 4 to 7 any one, it is characterized in that the tubular structure that described shell is an end opening.
9. MEMS microphone according to claim 8, is characterized in that, described shell is metal shell.
10. according to the described MEMS microphone of claim 4 to 7 any one, it is characterized in that the tubular structure that described shell is both ends open.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320445826 CN203368752U (en) | 2013-07-24 | 2013-07-24 | Mems microphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320445826 CN203368752U (en) | 2013-07-24 | 2013-07-24 | Mems microphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203368752U true CN203368752U (en) | 2013-12-25 |
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ID=49816463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320445826 Expired - Lifetime CN203368752U (en) | 2013-07-24 | 2013-07-24 | Mems microphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203368752U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109218940A (en) * | 2018-08-29 | 2019-01-15 | 维沃移动通信有限公司 | A kind of terminal |
-
2013
- 2013-07-24 CN CN 201320445826 patent/CN203368752U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109218940A (en) * | 2018-08-29 | 2019-01-15 | 维沃移动通信有限公司 | A kind of terminal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
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. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20200616 Address after: 266104 room 103, 396 Songling Road, Laoshan District, Qingdao, Shandong Province Patentee after: Goer Microelectronics Co.,Ltd. Address before: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Patentee before: GOERTEK Inc. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131225 |
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| CX01 | Expiry of patent term |