CN202565326U - Circuit board for lowering main board noise and mobile phone - Google Patents
Circuit board for lowering main board noise and mobile phone Download PDFInfo
- Publication number
- CN202565326U CN202565326U CN2012201194104U CN201220119410U CN202565326U CN 202565326 U CN202565326 U CN 202565326U CN 2012201194104 U CN2012201194104 U CN 2012201194104U CN 201220119410 U CN201220119410 U CN 201220119410U CN 202565326 U CN202565326 U CN 202565326U
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- circuit board
- pad
- mlcc
- noise
- electric capacity
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Abstract
The utility model discloses a circuit board for lowering main board noise and a mobile phone. The circuit board for lowering main board noise comprises a circuit board main body, wherein pads are arranged on the circuit board main body for MLCC (Multiplayer Ceramic Chip Capacitors) capacitance chips, the pads comprise a first pad and a second pad used for welding electrodes of capacitance end of the MLCC, wherein groove holes are arranged at two sides of the pads used for the MLCC capacitance chips, and the groove holes are respectively a first groove hole and a second groove hole. With the adoption of the circuit board and the mobile phone provided by the utility model, the groove holes are arranged at two sides of the pads used for the MLCC capacitance chips, for reducing the drive of the circuit board main body by the MLCC capacitance caused by piezoelectric effect, thereby reaching the aim of lowering the main board noise.
Description
Technical field
The utility model relates to field of circuit boards, relates in particular to a kind of circuit board and mobile phone that reduces the mainboard noise.
Background technology
In the GSM mobile handset design, because GSM burst emission can cause the MLCC electric capacity in the circuit board systems to produce people's ear audible noise, this is important branch in the TD noise that is commonly called as in the industry, is referred to as the mainboard noise in this article.Because the noise that produces is people's ear audible, the mainboard noise badly influences cellphone subscriber's normal experience effect.In the prior art, generally be through the relevant MLCC electric capacity of using on the circuit board is replaced by tantalum electric capacity, to reach the purpose of eliminating the mainboard noise.But because the tantalum electric capacity of equal parameter is the several times of MLCC electric capacity or high price more, therefore such method can make the production cost of mobile phone too high.
Therefore, prior art awaits to improve and development.
The utility model content
In view of the deficiency of above-mentioned prior art, the purpose of the utility model is to provide a kind of circuit board and mobile phone that reduces the mainboard noise, is intended to solve the existing too high problem of method cost of eliminating the mainboard noise.
The technical scheme of the utility model is following:
A kind of circuit board that reduces the mainboard noise; Comprise circuit board main body; Said circuit board main body is provided with the pad that is used for MLCC electric capacity paster, comprises first pad and second pad that are used to weld MLCC capacitance terminal electrode in the said pad, wherein; Both sides at the pad of the said MLCC of being used for electric capacity paster are provided with the grooved hole, and said grooved hole is respectively the first grooved hole and the second grooved hole.
The circuit board of described reduction mainboard noise, wherein, the said first grooved hole is parallel with said first pad, and the said second grooved hole is parallel with said second pad.
The circuit board of described reduction mainboard noise, wherein, said circuit board main body is provided with the pad of a plurality of said MLCC of being used for electric capacity pasters.
The circuit board of described reduction mainboard noise, wherein, the pad of the said a plurality of MLCC of being used for electric capacity pasters is for being set up in parallel, and first pad of the pad of the said a plurality of MLCC of being used for electric capacity pasters is arranged on same straight line.
A kind of mobile phone wherein, comprises the circuit board like above-mentioned reduction mainboard noise in the said mobile phone.
Described mobile phone, wherein, the said first grooved hole is parallel with said first pad, and the said second grooved hole is parallel with said second pad.
Described mobile phone, wherein, said circuit board main body is provided with the pad of a plurality of said MLCC of being used for electric capacity pasters.
Described mobile phone, wherein, the pad of the said a plurality of MLCC of being used for electric capacity pasters is for being set up in parallel, and first pad of the pad of the said a plurality of MLCC of being used for electric capacity pasters is arranged on same straight line.
Beneficial effect: circuit board that the utility model provided and mobile phone, through in the pad both sides that are used for MLCC electric capacity paster the grooved hole being set, weakened MLCC electric capacity because of the drive of piezoelectric effect to circuit board main body, thereby reached the purpose that reduces the mainboard noise.
Description of drawings
Fig. 1 reduces the structural representation of the circuit board embodiment of mainboard noise for the utility model.
Fig. 2 reduces the structural representation of the circuit board embodiment of mainboard noise for the utility model.
Embodiment
The utility model provides a kind of circuit board and mobile phone that reduces the mainboard noise, for purpose, technical scheme and the effect that makes the utility model is clearer, clear and definite, below to the utility model further explain.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Multi-layer ceramic capacitance (MLCC) is in the circuit of reality uses; Because the reason of the piezoelectric effect of material own; When in the circuit during electric field change, MLCC electric capacity itself can produce corresponding with it physical deformation, its deformation degree, frequency and electric field change amplitude, frequency dependence.When the frequency of electric field change when audiorange (20 ~ 20000 hertz), this physical deformation can cause the discernible sound of people's ear to occur, general amplitude is less.And when MLCC electric capacity was assemblied on the circuit board, this sound will be exaggerated, thereby produced the common mainboard noise of mobile phone industry.
This utility model provides a kind of circuit board that reduces the mainboard noise; Said circuit board is started with the related of circuit board from weakening MLCC electric capacity; Through both sides the grooved hole is set at MLCC electric capacity; Amplification effect in the time of can weakening MLCC electric capacity and be assemblied on the circuit board, thus reach the purpose that reduces the mainboard noise amplitude.Facts have proved that the both sides of the MLCC electric capacity that corresponding VBAT circuit is relevant on the entire circuit plate all are provided with the grooved hole, can effectively reduce mainboard noise amplitude 8db or more than.
Specifically; As shown in Figure 1; The circuit board of the reduction mainboard noise that the utility model provided comprises circuit board main body 100, and said circuit board main body 100 is provided with the pad 110 that is used for MLCC electric capacity paster; Both sides at the pad 110 of the said MLCC of being used for electric capacity paster are provided with the grooved hole, and said grooved hole is used to weaken MLCC electric capacity because of the drive of piezoelectric effect to circuit board main body 100.
Particularly, comprise first pad 111 and second pad 112 that are used to weld MLCC capacitance terminal electrode in the said pad, said grooved hole is respectively the first grooved hole 121 and the second grooved hole 122.Preferably, the said first grooved hole 121 is parallel with said first pad 111, and the said second grooved hole 122 is parallel with said second pad 112.
Can be provided with the pad 110 of a plurality of MLCC of being used for electric capacity pasters on the said circuit board main body 100.On said circuit board main body 100, be set side by side with the pad 110 of a plurality of MLCC of being used for electric capacity pasters; First pad 111 of said a plurality of pads, second pad 112 can be separately positioned on the same straight line; As shown in Figure 2; The said first grooved hole 121 and the second grooved hole 122 also are separately positioned on the same straight line, and the said first grooved hole 121 is arranged on the side near said first pad 111, and the said second grooved hole 122 is arranged on the side near said second pad 112.Like this, can closely be provided with between said a plurality of pads that are set up in parallel 110, can play the effect in the space of saving circuit board main body.
The utility model also provides a kind of mobile phone that adopts the circuit board of above-mentioned reduction mainboard noise; Do not increasing under the condition of cost, effectively MLCC electric capacity makes whole system produce people's ear audible mainboard noise because of piezoelectric effect in the mobile phone because GSM burst emission causes in reduction.
Circuit board that the utility model provided and mobile phone through in the pad both sides that are used for MLCC electric capacity paster the grooved hole being set, have weakened MLCC electric capacity because of the drive of piezoelectric effect to circuit board main body, thereby reach the purpose that reduces the mainboard noise.
Should be understood that; The application of the utility model is not limited to above-mentioned giving an example; Concerning those of ordinary skills, can improve or conversion according to above-mentioned explanation, all these improvement and conversion all should belong to the protection range of the utility model accompanying claims.
Claims (8)
1. circuit board that reduces the mainboard noise; Comprise circuit board main body; Said circuit board main body is provided with the pad that is used for MLCC electric capacity paster, comprises first pad and second pad that are used to weld MLCC capacitance terminal electrode in the said pad, it is characterized in that; Both sides at the pad of the said MLCC of being used for electric capacity paster are provided with the grooved hole, and said grooved hole is respectively the first grooved hole and the second grooved hole.
2. the circuit board of reduction mainboard noise according to claim 1 is characterized in that, the said first grooved hole is parallel with said first pad, and the said second grooved hole is parallel with said second pad.
3. the circuit board of reduction mainboard noise according to claim 2 is characterized in that, said circuit board main body is provided with the pad of a plurality of said MLCC of being used for electric capacity pasters.
4. the circuit board of reduction mainboard noise according to claim 3 is characterized in that, the pad of the said a plurality of MLCC of being used for electric capacity pasters is for being set up in parallel, and first pad of the pad of the said a plurality of MLCC of being used for electric capacity pasters is arranged on same straight line.
5. a mobile phone is characterized in that, comprises the circuit board of reduction mainboard noise as claimed in claim 1 in the said mobile phone.
6. mobile phone according to claim 5 is characterized in that, the said first grooved hole is parallel with said first pad, and the said second grooved hole is parallel with said second pad.
7. mobile phone according to claim 6 is characterized in that, said circuit board main body is provided with the pad of a plurality of said MLCC of being used for electric capacity pasters.
8. mobile phone according to claim 7 is characterized in that, the pad of the said a plurality of MLCC of being used for electric capacity pasters is for being set up in parallel, and first pad of the pad of the said a plurality of MLCC of being used for electric capacity pasters is arranged on same straight line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201194104U CN202565326U (en) | 2012-03-27 | 2012-03-27 | Circuit board for lowering main board noise and mobile phone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201194104U CN202565326U (en) | 2012-03-27 | 2012-03-27 | Circuit board for lowering main board noise and mobile phone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202565326U true CN202565326U (en) | 2012-11-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201194104U Expired - Fee Related CN202565326U (en) | 2012-03-27 | 2012-03-27 | Circuit board for lowering main board noise and mobile phone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202565326U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105306740A (en) * | 2015-12-03 | 2016-02-03 | 广东欧珀移动通信有限公司 | Noise reduction method and device |
| CN110062526A (en) * | 2019-04-24 | 2019-07-26 | 南京工程学院 | A kind of PCB circuit board of the patch electronics element based on safety |
| CN113556868A (en) * | 2021-09-18 | 2021-10-26 | 惠科股份有限公司 | Pad structure, circuit board and display device |
| CN113804220A (en) * | 2021-09-16 | 2021-12-17 | 维沃移动通信有限公司 | Sensor interference filtering method and device, electronic equipment and storage medium |
| CN114138064A (en) * | 2021-10-29 | 2022-03-04 | 广东浪潮智慧计算技术有限公司 | Eliminating device for MLCC squeaking noise and notebook computer |
-
2012
- 2012-03-27 CN CN2012201194104U patent/CN202565326U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105306740A (en) * | 2015-12-03 | 2016-02-03 | 广东欧珀移动通信有限公司 | Noise reduction method and device |
| CN105306740B (en) * | 2015-12-03 | 2018-03-27 | 广东欧珀移动通信有限公司 | Noise-reduction method and device |
| CN110062526A (en) * | 2019-04-24 | 2019-07-26 | 南京工程学院 | A kind of PCB circuit board of the patch electronics element based on safety |
| CN110062526B (en) * | 2019-04-24 | 2021-10-15 | 南京工程学院 | PCB circuit board based on safe paster electronic component |
| CN113804220A (en) * | 2021-09-16 | 2021-12-17 | 维沃移动通信有限公司 | Sensor interference filtering method and device, electronic equipment and storage medium |
| CN113804220B (en) * | 2021-09-16 | 2024-02-27 | 维沃移动通信有限公司 | Sensor interference filtering method and device, electronic equipment and storage medium |
| CN113556868A (en) * | 2021-09-18 | 2021-10-26 | 惠科股份有限公司 | Pad structure, circuit board and display device |
| CN113556868B (en) * | 2021-09-18 | 2022-01-14 | 惠科股份有限公司 | Pad structure, circuit board and display device |
| CN114138064A (en) * | 2021-10-29 | 2022-03-04 | 广东浪潮智慧计算技术有限公司 | Eliminating device for MLCC squeaking noise and notebook computer |
| CN114138064B (en) * | 2021-10-29 | 2024-02-23 | 广东浪潮智慧计算技术有限公司 | MLCC (multi-layer ceramic) howling noise eliminating device and notebook computer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121128 Termination date: 20150327 |
|
| EXPY | Termination of patent right or utility model |