CN102387658A - Printed circuit board - Google Patents
Printed circuit board Download PDFInfo
- Publication number
- CN102387658A CN102387658A CN2010102681165A CN201010268116A CN102387658A CN 102387658 A CN102387658 A CN 102387658A CN 2010102681165 A CN2010102681165 A CN 2010102681165A CN 201010268116 A CN201010268116 A CN 201010268116A CN 102387658 A CN102387658 A CN 102387658A
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- CN
- China
- Prior art keywords
- interface
- surge absorber
- electronic component
- circuit board
- printed circuit
- 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.)
- Pending
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Abstract
A printed circuit board comprises: an electronic component, a signal line, an input/output (I/O)interface, a resistor, a capacitor and a surge absorber. The electronic component is connected with one end of the resistor through the signal line. The other end of the resistor is successively connected with the capacitor, the surge absorber and the I/O interface. The resistor, the capacitor and the surge absorber are close to the I/O interface. And the surge absorber is closest to the I/O interface. The capacitor is located between the resistor and the surge absorber. The surge absorber absorbs influent static electricity through the I/O interface. The resistor obstructs the static electricity which is not absorbed by the surge absorber to flow into the electronic component. The capacitor filters noises transmitted on the signal line. The printed circuit board absorbs the static electricity flowed through the I/O interface so as to avoid the static electricity damaging the electronic component. And the noises transmitted on the signal line are filtered so that the noises can not be transmitted through the I/O interface and electromagnetic interference can not be generated.
Description
Technical field
The present invention relates to a kind of printed circuit board (PCB).
Background technology
Be typically provided with I/O (input/output, the I/O) interface (like USB interface, VGA interface etc.) that is used to connect ancillary equipment on the printed circuit board (PCB) of electronic equipment.Because said I/O interface is exposed at outside the cabinet of electronic equipment, therefore, when the people who carries static or equipment touched said I/O interface, static flowed into printed circuit board (PCB) through said I/O interface, is located at the electronic component on the printed circuit board (PCB) thereby damage.In addition, the noise that produces on the printed circuit board (PCB) can transfer out through said I/O interface and the ancillary equipment that is attached thereto, thereby causes electromagnetic interference.
Summary of the invention
In view of foregoing, be necessary to provide a kind of printed circuit board (PCB) that absorbs static and prevent electromagnetic interference.
A kind of printed circuit board (PCB); Comprise an electronic component, a holding wire, an I/O interface, a resistance, an electric capacity and a surge absorber; Said electronic component links to each other with an end of said resistance through said holding wire; The other end of said resistance links to each other with an end and the said I/O interface of an end of said electric capacity, said surge absorber successively; The equal ground connection of the other end of said electric capacity and said surge absorber, said resistance, said electric capacity and said surge absorber are all near said I/O interface, and said surge absorber is nearest from said I/O interface; Said electric capacity is between said resistance and said surge absorber; Said surge absorber absorbs the static that flows into from said I/O interface, and said resistance intercepts the static that has not been absorbed by said surge absorber and flows into said electronic component, the noise that transmits on the said holding wire of said electric capacity filtering.
Compare prior art; Printed circuit board (PCB) of the present invention is through being provided with said resistance, said electric capacity and said surge absorber near said I/O interface; To absorb the static that flows into from said I/O interface; Thereby prevent of the damage of said static, and the noise that transmits on the said holding wire of filtering, thereby preventing that noise from transferring out through said I/O interface causes electromagnetic interference to said electronic component.
Description of drawings
Combine preferred embodiments that the present invention is described in further detail with reference to the accompanying drawings:
Fig. 1 is the sketch map of printed circuit board (PCB) preferred embodiments of the present invention.
The main element symbol description
Printed circuit board (PCB) 10
I/O interface 18
Resistance R
Capacitor C
Surge absorber V
Embodiment
Please refer to Fig. 1, the preferred embodiments of printed circuit board (PCB) 10 of the present invention comprises an electronic component 12, a holding wire 16, an I/O (input/output, I/O) interface 18, a resistance R, a capacitor C and a surge absorber V.Said electronic component 12 links to each other with an end of said resistance R through said holding wire 16; The other end of said resistance R links to each other with an end and the said I/O interface 18 of an end of said capacitor C, said surge absorber V successively, the equal ground connection of the other end of said capacitor C and said surge absorber V.Said resistance R, said capacitor C and said surge absorber V be all near said I/O interface 18, and said surge absorber V is nearest from said I/O interface 18, and said capacitor C is between said resistance R and said surge absorber V.In this execution mode, said electronic component 12 is a chip (like central processing unit etc.), and said I/O interface 18 can be USB interface, VGA interface etc.Said printed circuit board (PCB) 10 is located in the cabinet (figure does not show) of an electronic equipment, and said I/O interface 18 is exposed at outside the cabinet of said electronic equipment, is used to connect ancillary equipment.
When the people who carries static or equipment touched said I/O interface 18, static flowed into said printed circuit board (PCB) 10 through said I/O interface, and got into the surge absorber V that leans on said I/O interface 18 nearest at first.Because the voltage of the formed unexpected rising of said static is greater than the breakdown voltage of said surge absorber V, so said surge absorber V becomes channel status.At this moment, a said static part is absorbed by said surge absorber V, and a part is absorbed by ground via said surge absorber V, thereby has avoided the infringement of said static to said electronic component 12.
When said static is excessive and can't be absorbed fully by said surge absorber V the time, said resistance R can intercept remaining static and flow into said electronic component 12, so that said electronic component 12 is further protected.
When the signal of transmission on the said holding wire 16 when having noise, said capacitor C can be with said noise filtering, causes electromagnetic interference to prevent that said noise from transferring out through said I/O interface 18 and the ancillary equipment that is attached thereto.
In this execution mode, because static is maximum to the damage of said printed circuit board (PCB) 10, so, said surge absorber V is located near said I/O interface 18 places, avoid damage with timely absorption static.Transfer out through said I/O interface 18 owing to noise again; And any one section of said holding wire 16 all possibly exist noise; So, said capacitor C is located near said I/O interface 18 places, so that absorb the noise that will flow into said I/O interface 18 better.And said resistance R is that said electronic component 12 is further protected, so, can be far from said I/O interface 18 more said capacitor C.
Printed circuit board (PCB) 10 of the present invention is through being provided with said resistance R, said capacitor C and said surge absorber V near said I/O interface 18 places; To absorb the static that flows into from said I/O interface 18; Thereby prevent of the damage of said static to said electronic component 12; And the noise of transmission on the said holding wire 16 of filtering, thereby preventing that said noise from transferring out through said I/O interface 18 causes electromagnetic interference.
Claims (1)
1. printed circuit board (PCB); Comprise an electronic component, a holding wire, an I/O interface, a resistance, an electric capacity and a surge absorber; Said electronic component links to each other with an end of said resistance through said holding wire; The other end of said resistance links to each other with an end and the said I/O interface of an end of said electric capacity, said surge absorber successively; The equal ground connection of the other end of said electric capacity and said surge absorber, said resistance, said electric capacity and said surge absorber are all near said I/O interface, and said surge absorber is nearest from said I/O interface; Said electric capacity is between said resistance and said surge absorber; Said surge absorber absorbs the static that flows into from said I/O interface, and said resistance intercepts the static that has not been absorbed by said surge absorber and flows into said electronic component, the noise that transmits on the said holding wire of said electric capacity filtering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102681165A CN102387658A (en) | 2010-08-31 | 2010-08-31 | Printed circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102681165A CN102387658A (en) | 2010-08-31 | 2010-08-31 | Printed circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102387658A true CN102387658A (en) | 2012-03-21 |
Family
ID=45826454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102681165A Pending CN102387658A (en) | 2010-08-31 | 2010-08-31 | Printed circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102387658A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105636338A (en) * | 2015-12-29 | 2016-06-01 | 广东欧珀移动通信有限公司 | Flexible printed circuit board wiring structure and mobile terminal |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4198613A (en) * | 1978-05-17 | 1980-04-15 | Bunker Ramo Corporation | Filter contact |
| US20070200133A1 (en) * | 2005-04-01 | 2007-08-30 | Akira Hashimoto | Led assembly and manufacturing method |
| US20080067598A1 (en) * | 2006-09-14 | 2008-03-20 | Novatek Microelectronics Corp. | Layout structure of electrostatic discharge protection circuit and production method thereof |
-
2010
- 2010-08-31 CN CN2010102681165A patent/CN102387658A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4198613A (en) * | 1978-05-17 | 1980-04-15 | Bunker Ramo Corporation | Filter contact |
| US20070200133A1 (en) * | 2005-04-01 | 2007-08-30 | Akira Hashimoto | Led assembly and manufacturing method |
| US20080067598A1 (en) * | 2006-09-14 | 2008-03-20 | Novatek Microelectronics Corp. | Layout structure of electrostatic discharge protection circuit and production method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 郭亚红: "集成电路中抑制电磁干扰的布线措施", 《河北工业科技》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105636338A (en) * | 2015-12-29 | 2016-06-01 | 广东欧珀移动通信有限公司 | Flexible printed circuit board wiring structure and mobile terminal |
| CN105636338B (en) * | 2015-12-29 | 2018-05-29 | 广东欧珀移动通信有限公司 | Flexible PCB Wiring structure and mobile terminal |
| CN108650779A (en) * | 2015-12-29 | 2018-10-12 | 广东欧珀移动通信有限公司 | Flexible PCB Wiring structure and mobile terminal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120321 |