CN102006713B - Circuit board with static protection structure - Google Patents
Circuit board with static protection structure Download PDFInfo
- Publication number
- CN102006713B CN102006713B CN 200910083152 CN200910083152A CN102006713B CN 102006713 B CN102006713 B CN 102006713B CN 200910083152 CN200910083152 CN 200910083152 CN 200910083152 A CN200910083152 A CN 200910083152A CN 102006713 B CN102006713 B CN 102006713B
- Authority
- CN
- China
- Prior art keywords
- circuit board
- zone
- ground
- protection
- interface
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Elimination Of Static Electricity (AREA)
Abstract
The invention discloses a circuit board with a static protection structure, which comprises an I/O interface, a static protection device, a discharge circuit, a protection ground area and a working ground area. The protection ground area surrounds the outer side of the working ground area, the discharge circuit is connected between the two areas, and the protection ground area at least comprises one positioning hole, wherein the positioning hole is used for fixing the circuit board and introducing the static electricity of the protection ground area into a ground line or the ground; and the ground wire end of the I/O interface is connected with a static protection device and the positioning hole in series in sequence. The danger of static electricity on the circuit can be effectively prevented by using the scheme; because the structure of the circuit board is provided with a circle of unclosed metal conducting layer, electromagnetic interference can also be effectively prevented, and the electromagnetic compatibility of the circuit board is enhanced.
Description
Technical field
The invention belongs to the circuit board technology field, particularly a kind of circuit board that contains electrostatic protection structure.
Background technology
People owing to the friction of hair, clothes etc., often can build up certain static in daily life; Certainly, on various electronic equipments, because the interaction between its each components and parts also is very easy to build up static on its circuit board; These static all are breakneck to electronic devices and components, the electronic device on regular meeting's puncture and the damage circuit board; though electronic device is not breakdown sometimes, also can influence the life-span of its operate as normal, therefore; the existence of static can bring to the operate as normal of electronic device to seriously influence.
In addition, because the electromagnetic interference of the wide band high pressure of generation of static electricity can also be coupled on the circuit of circuit board, can disturb electronic device, even make device failure or misoperation, make the reliability of electronic device works reduce greatly.
Therefore, improving the antistatic capacity of circuit board on the electronic equipment, is that electronic equipment can exempt from damage, guarantees its operate as normal, is present urgent problem.
Summary of the invention
The present invention provides a kind of circuit board that contains electrostatic protection structure especially in order to solve problems of the prior art.
Technical scheme of the present invention is as follows:
A kind of circuit board that contains electrostatic protection structure comprises the I/O interface, and described circuit board comprises electrostatic protection device, discharge circuit, protection zone, ground and work region;
Zone, described protection ground is enclosed in the outside, described work region, and is connected with described discharge circuit between the two;
A location hole is contained in zone, described protection ground at least; Wherein, described location hole is used for importing ground wire by various interface unit fixing circuit boards and with the regional static in described protection ground, and interface unit described herein can be various screws, rivet etc.
The ground terminal of described I/O interface successively with described electrostatic protection device, and at least one described location hole connect.
Zone, described protection ground is plated in each edge on described circuit board one surface for metal conducting layer at least one peristome, that pre-set width to be set.
Described metal conducting layer is set to contain " recessed " font of a peristome, is plated in each edge on described circuit board one surface.
Wherein, the metal in the described metal conducting layer is copper or silver.
Wherein, described discharge circuit is some high-voltage capacitances, is parallel to respectively between zone, described protection ground and the described work region.
Described high-voltage capacitance is surface patch formula electric capacity.
Described high-voltage capacitance is: the appearance value is that 0～100pf, withstand voltage are more than or equal to the high-voltage capacitance of 1000V.
Wherein, at least one described high-voltage capacitance in parallel between described zone, protection ground and the described work region; In addition, between the zone, described protection ground and described work region of described peristome both sides, at least one described high-voltage capacitance respectively in parallel.
Be at least described electrostatic protection device piezo-resistance, transition suppress diode or static suppressor one of them.
Wherein, described I/O interface is DVI interface or USB interface.
Adopt the solution of the present invention can better solve the problem of electrostatic defending on the circuit board; can fast the static in described GND zone must be discharged into PGND zone, described protection ground; and also taked the electrostatic defending measure in the I/O interface end; avoid because under artificial or other situations; contact the I/O interface and produce a large amount of static; impact for the components and parts of circuit board, even puncture.
Description of drawings
Fig. 1 is the circuit board schematic diagram of the embodiment of the invention 1;
Fig. 2 is the circuit board schematic diagram of the embodiment of the invention 2.
Embodiment
Below in conjunction with the drawings and the specific embodiments the present invention is described in further details.
Embodiment 1
With reference to Fig. 1, a kind of circuit board 100 that contains electrostatic protection structure, it comprises I/O interface 106, and described circuit board 100 comprises electrostatic protection device, discharge circuit, zone 101, protection ground and work region 102.
With reference to the diagonal line hatches part among Fig. 1, zone, described protection ground 101 is enclosed in 102 outsides, described work region, and is connected with described discharge circuit between the two; Four location holes are contained in zone, described protection ground 101; Each described location hole is used for importing ground wire or greatly by screw fixing circuit board 100 and with the static in zone, described protection ground 101.
For example, zone 101, described protection ground is plated in each edge on described circuit board 100 1 surfaces for a metal conducting layer peristome, that pre-set width to be set.In the present embodiment, described circuit board 100 is a rectangular circuit board, the width of described metal conducting layer is 0.5cm, evenly be plated in four edge parts on described circuit board 100 surfaces, with reference to Fig. 1, and leave an opening at the lower limb of described circuit board 100, that is to say, described metal conducting layer is not all conductive layer of closure, and it can leave one, two, three or more peristomes.When having two above peristomes, the size of peristome can be identical, also can be different.Peristome can also be set to different shapes, for example the combination of trapezoidal, rectangle, star, arc and above-mentioned different shape.
Wherein, metal conducting layer described in the present embodiment adopts metallic copper, and namely the edge part around the described circuit board 100 is coated with the layer of copper cortex, and leaves an opening in lower edge portion.And for example, described metal conducting layer adopts argent, that is, as Fig. 1 or shown in Figure 2, the edge part around the described circuit board 100 is coated with one deck parchment covering layer, and leaves an opening in lower edge portion.
And for example, the width of described metal conducting layer can also need to prove for other width such as 0.2cm, 0.32cm, 0.41cm, 0.56cm, 0.64cm, 0.66cm, 0.48cm, herein and should not be construed as limitation of the present invention.
The ground terminal of described I/O interface 106 successively with described electrostatic protection device, and described location hole 105 connect.The interface of I/O described in the present embodiment can be USB interface, perhaps DVI interface etc.
In the present embodiment; described electrostatic protection device adopts ESD (Electro-Static-Discharge; antistatic protection) device 104; install and regional 101 inside, described protection ground; be on its installation and the described copper sheet layer; be used for described I/O interface 106 is carried out electrostatic defending; when in case human body or other objects that contain static contact described I/O interface 106; can immediately the static on the described I/O interface 106 be imported zone, described protection ground 101 by ESD device 104, can protect described I/O interface 106 not to be subjected to electrostatic interference immediately.Wherein, described ESD device 104 can adopt piezo-resistance, transition suppress diode or static suppressor one of them.
In the present embodiment, described discharge circuit preferably adopts some high-voltage capacitances 103, and described high-voltage capacitance 103 is parallel to respectively between zone 101, described protection ground and the described work region 102.I.e. a plurality of high-voltage capacitances 103 in parallel in the described protection ground zone 101 of described circuit board 100 and the gap between the described work region 102.
With reference to Fig. 1, concrete, high-voltage capacitance 103 respectively in parallel between top edge, left hand edge and the right hand edge of described circuit board 100 zone 101, described protection ground and described work region 102; At the dual-side of the described peristome 107 of described circuit board 100 lower limbs, high-voltage capacitance in parallel respectively, namely except lower limb in parallel altogether 2 high-voltage capacitances, described high-voltage capacitance 103 that each edge of all the other of described circuit board 100 is all in parallel.
For example, described high-voltage capacitance 103 adopts surface patch formula electric capacity.
And for example, described high-voltage capacitance appearance value is 100pf, and withstand voltage is 1000V.And for example, described high-voltage capacitance 103 appearance values are 80pf, and withstand voltage is 1200V; Perhaps, described high-voltage capacitance 103 appearance values are 90pf, and withstand voltage is 1350V; Perhaps, described high-voltage capacitance 103 appearance values are 85pf, and withstand voltage is 1100V.
Adopt the solution of the present invention, can effectively prevent the harm of static on the circuit, and the structure of this kind circuit board, because the metal conducting layer that exists a circle not seal can also effectively prevent electromagnetic interference, the Electro Magnetic Compatibility of intensifier circuit plate.
Embodiment 2
Present embodiment, on the basis of embodiment 1, zone, described protection ground 101 is left first peristome 108 and second peristome 107 respectively in upper edge and the lower edge of circuit board 100 respectively, in addition, in the left and right sides of first peristome 108 and second peristome 107, high-voltage capacitance 103 in parallel respectively between zone 101, described protection ground and described work region 102; The upper edge that is described circuit board 100 contains first peristome 108, and its left and right sides high-voltage capacitance 103 respectively in parallel, same, the lower edge of described circuit board 100, contain second peristome 107, and its left and right sides high-voltage capacitance 103 respectively in parallel.
Identical with embodiment 1 on all the other principles, do not repeat them here.
Adopt the scheme of present embodiment as can be known, regional 101 peristomes in described protection ground are not only to have one, and the position of its peristome, are not the lower edge that only can be positioned at described circuit board 100 yet.According to actual conditions, the position of peristome can be positioned at any one position of board edge.
Should be understood that, for those of ordinary skills, can be improved according to the above description or conversion, and all these improvement and conversion all should belong to the protection range of claims of the present invention.
Claims (9)
1. a circuit board that contains electrostatic protection structure comprises the I/O interface, it is characterized in that, described circuit board comprises electrostatic protection device, discharge circuit, protection zone, ground and work region;
Zone, described protection ground is enclosed in the outside, described work region, and is connected with described discharge circuit between the two;
A location hole is contained in zone, described protection ground at least; Wherein, described location hole is used for fixing circuit board and the static in zone, described protection ground is imported ground wire or greatly;
The ground terminal of described I/O interface successively with described electrostatic protection device, and at least one described location hole connect; Described electrostatic protection device is installed in described protection ground intra-zone;
Zone, described protection ground is plated in each edge on described circuit board one surface for metal conducting layer at least one peristome, that pre-set width to be set.
2. according to claims 1 described circuit board, it is characterized in that described metal conducting layer is set to contain " recessed " font of a peristome.
3. according to claims 1 described circuit board, it is characterized in that the metal in the described metal conducting layer is copper or silver.
4. according to the arbitrary described circuit board of claim 1 to 3, it is characterized in that described discharge circuit is some high-voltage capacitances, be parallel to respectively between zone, described protection ground and the described work region.
5. circuit board according to claim 4 is characterized in that, described high-voltage capacitance is surface patch formula electric capacity.
6. circuit board according to claim 4 is characterized in that, described high-voltage capacitance is: the appearance value is that 0～100pf, withstand voltage are more than or equal to the high-voltage capacitance of 1000V.
7. circuit board according to claim 4 is characterized in that, at least one described high-voltage capacitance in parallel between zone, described protection ground and the described work region;
Wherein, between the zone, described protection ground and described work region of described peristome both sides, at least one described high-voltage capacitance respectively in parallel.
8. according to claims 1 described circuit board, it is characterized in that, described electrostatic protection device be at least piezo-resistance, transition suppress diode or static suppressor one of them.
9. according to claims 1 described circuit board, it is characterized in that described I/O interface is DVI interface or USB interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910083152 CN102006713B (en) | 2009-05-05 | 2009-05-05 | Circuit board with static protection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910083152 CN102006713B (en) | 2009-05-05 | 2009-05-05 | Circuit board with static protection structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102006713A CN102006713A (en) | 2011-04-06 |
| CN102006713B true CN102006713B (en) | 2013-09-04 |
Family
ID=43813669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910083152 Expired - Fee Related CN102006713B (en) | 2009-05-05 | 2009-05-05 | Circuit board with static protection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102006713B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103607838B (en) * | 2013-11-12 | 2017-10-31 | 青岛歌尔声学科技有限公司 | A kind of printed circuit board (PCB) |
| CN104038866A (en) * | 2014-06-30 | 2014-09-10 | 青岛歌尔声学科技有限公司 | Circuit board with static protection function and Bluetooth earphone |
| CN105704912A (en) * | 2016-04-11 | 2016-06-22 | 上海斐讯数据通信技术有限公司 | Electrostatic protection method and system of single printed circuit board (PCB) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1787718A (en) * | 2004-12-09 | 2006-06-14 | 鸿富锦精密工业（深圳）有限公司 | Printed circuit board capable of preventing electrostatic discharging |
| CN2826901Y (en) * | 2005-09-30 | 2006-10-11 | 华为技术有限公司 | Antistatic apparatus of circuit board |
-
2009
- 2009-05-05 CN CN 200910083152 patent/CN102006713B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1787718A (en) * | 2004-12-09 | 2006-06-14 | 鸿富锦精密工业（深圳）有限公司 | Printed circuit board capable of preventing electrostatic discharging |
| CN2826901Y (en) * | 2005-09-30 | 2006-10-11 | 华为技术有限公司 | Antistatic apparatus of circuit board |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102006713A (en) | 2011-04-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101585604B1 (en) | Circuit protection contactor and mobile electronic device with the same | |
| CN102006714B (en) | Electrostatic protection structure-containing circuit board | |
| CN102006713B (en) | Circuit board with static protection structure | |
| KR100957769B1 (en) | Circuit for preventing surge, connector and electronic apparatus thereof | |
| CN1870678A (en) | Static electricity and electric shock protection apparatus for mobile terminal | |
| US9065274B2 (en) | Connection apparatus circuit and high voltage surge protection method thereof | |
| KR101638053B1 (en) | Contactor and mobile electronic device with the same | |
| CN103369809A (en) | Anti-static electrical device and protective circuit thereof | |
| CN202004323U (en) | Shield grounding circuit for secondary circuit | |
| CN102227050B (en) | Switch cabinet secondary circuit shielding grounding circuit | |
| US9967970B2 (en) | Circuit arrangement for reducing the maximum electrical field strength, high voltage generation unit with such a circuit arrangement and x-ray generator with such a high voltage generation unit | |
| EP2405732A3 (en) | Electromagnetic interference (EMI) diverter | |
| CN105811333B (en) | A kind of cable routing box for intelligent substation electronic device | |
| CN203326599U (en) | High-energy-capacity voltage-limiting device | |
| EP2808959B1 (en) | High voltage discharge protection device and radio frequency transmission apparatus using the same | |
| CN105392273A (en) | Electrostatic protection circuit board | |
| CN208369539U (en) | A kind of filtering unit integrating lightning protection and filtering | |
| Darwanto et al. | EMC-based skin-effect grounding for reliable lightning protection system of antenna system | |
| CN109787209A (en) | A kind of surge protector | |
| CN202797935U (en) | Lightning protection device structure for communication and device thereof | |
| KR101088686B1 (en) | Arc inducing type driven rod apparatus having needles | |
| CN103152975A (en) | Printed circuit board of wall switch | |
| CN210900204U (en) | Electronic communication equipment ESD protection case with improved electrostatic immunity | |
| CN101521375A (en) | Overvoltage protective device | |
| KR20070011763A (en) | Mobile communication terminal with improved esd and emc feature |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Beijing Zhongqing Micro Digital Equipment Development Co., Ltd. Document name: Notification to Pay the Fees |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130904 Termination date: 20180505 |