CN106604533A - Electrostatic protection structure - Google Patents
Electrostatic protection structure Download PDFInfo
- Publication number
- CN106604533A CN106604533A CN201710063586.XA CN201710063586A CN106604533A CN 106604533 A CN106604533 A CN 106604533A CN 201710063586 A CN201710063586 A CN 201710063586A CN 106604533 A CN106604533 A CN 106604533A
- Authority
- CN
- China
- Prior art keywords
- opening
- circuit substrate
- protection structure
- building brick
- electronic building
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
- H05K1/0254—High voltage adaptations; Electrical insulation details; Overvoltage or electrostatic discharge protection ; Arrangements for regulating voltages or for using plural voltages
- H05K1/0257—Overvoltage protection
- H05K1/0259—Electrostatic discharge [ESD] protection
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09209—Shape and layout details of conductors
Abstract
The invention discloses an electrostatic protection structure which comprises a circuit substrate and a plurality of protective conductors. The circuit substrate is provided with an opening. The plurality of protective conductors are arranged on one side face of the circuit substrate and are adjacent to the periphery of the opening. Each of the protective conductors comprises a tip part and is arranged at the periphery of the opening in a direction that the tip part faces the center of the opening, and each of the protective conductors is electrically connected to the grounding line of the circuit substrate. The protective conductors can guide an electrostatic discharge arc to face the protective conductors, thus a condition that the electrostatic discharge arc passes the opening of the circuit substrate so as to avoid the damage to electronic components adjacent to the opening by static electricity.
Description
Technical field
The present invention relates to a kind of electrostatic protection structure, more particularly to a kind of to prevent static discharge electric arc by electricity of taking action
The opening of sub- product, to avoid the electrostatic protection structure of electronic building brick destruction by electrostatic field.
Background technology
With the development that Mobile Communications technology is maked rapid progress, such as mobile phone, tablet PC, intelligent watch, with oneself
The portable electronic products such as media player are day by day fashionable, as such product facility is compact, powerful, have become our days
Scarce important communication tool can not be obtained in life and work often.
In general, the acoustic energy transition components of the types such as mike, speaker can be arranged on portable electronic products, using as
The source of sound input of portable electronic products and output device.Further, since portable electronic products function is gradually diversified, existing row
The electronic building brick species arranged on dynamic electronic product also day by day increases, and temperature biography can be arranged on such as wisdom bracelet or intelligent watch
The electronic building bricks such as sensor, pressure transducer, humidity sensor, air quality detector.The type electronic building brick is usually electrostatic
Sensitive electrical components, it is relatively easy by electrostatic breakdown, therefore appropriate electrostatic defending measure on electronic product, is must be provided with, with
Electronic building brick is prevented to be subjected to electrostatic breakdown.
In order to avoid this kind of harm, the manufacturer of electronic product has the design of related consideration in manufacturing process, common
Ground, protects the means of electrostatic typically by electrostatic grounding or sets up two kinds of circuit of stop, in a handheld the source of sound letter of electronic product
Number input/output end port as a example by, be on the connection line of sound source signal input/output end port addition protection electronics group
Part, for example：Filter transformer (Filter Transformer), stops or release electrostatic energy, to reach electrostatic protection
Purpose.
However, unquestionable, increasing electrostatic defending component increases the manufacturing cost for causing electronic product.Furthermore, it is existing
It is smart little that capable electronic product pursues powerful and volume so that designer in limited design space has to simplify group
Part, therefore increase electrostatic defending component can undoubtedly increase the difficulty of design.
If additionally, general portable electronic products arrange mike, speaker, temperature sensor, humidity sensor or sky
During the electronic building bricks such as makings amount detector, it will usually which in casing and circuit substrate, the position of the correspondence electronic building brick arranges and opens
Mouthful or through hole, using the MIC as mike, or for the passage of electronic building brick.And people are using these portable electronics
During product, may because of contact of the action of human body itself under dry climatic environment with other objects, separate, rub or feel
Factor should be waited and electrostatic (ESD) is produced, and the electric arc that electrostatic is produced can be via holding on the shell of electronic product and circuit substrate
Mouthful or through hole be directly entered, it is thus possible to electronic building brick can be caused by from the opening or the static discharge electric arc that passes through of through hole
Destruction.
However, in existing electrostatic protection structure, electrostatic defending electronic building brick is the connecting line for being serially connected in electronic building brick
Lu Shang, therefore the electrostatic induced current destruction electronic building brick for preventing from from the circuit conduction of circuit substrate is merely able to, if electrostatic is put
When electric arc is directly passed through from the opening or through hole of casing or circuit substrate, electronic building brick still may directly contact electrostatic electricity
Arc and be subject to electrostatic breakdown.
To prevent opening or the electrostatic electric arc destruction electronic building brick being punched through from casing or circuit substrate, existing row
The outside of the most openings or through hole using in casing of dynamic electronic product arranges a Chain Link Fence, but in electronic product enclosure
Opening protection network is set, it will it is so that the volume of electronic product increases, and for miniature microphone assembly, also uncomfortable
Close and Chain Link Fence be set so that this kind of electrostatic protection structure with being restricted.
Due to above reason, cause existing electrostatic protection structure to there is quite a lot of shortcoming, therefore how to pass through structure design
Improvement, lift the effect of portable electronic products electrostatic defending, overcome above-mentioned defect, it has also become the cause is be intended to be solved
One of important topic certainly.
The content of the invention
Present invention aim at providing a kind of electrostatic protection structure, particularly relate to a kind of to prevent static discharge electric arc from leading to
The opening of portable electronic products is crossed, to avoid the electrostatic protection structure of electronic building brick destruction by electrostatic field.
The embodiment of the present invention provides a kind of electrostatic protection structure, and wherein electronic building brick is arranged at a surface of a circuit substrate
On, the position of circuit substrate correspondence electronic building brick arranges one and is open, and electrostatic protection structure includes：Multiple guard conductors, Duo Gefang
Protect and lead body to be arranged on circuit substrate on another surface relative to electronic building brick and be adjacent to around opening；It is each to prevent protecting and leading
Body respectively have a tip portion, each guard conductor respectively with tip portion towards the center of opening direction spread configuration in
Around opening, and each guard conductor is electrically connected with a ground path of circuit substrate respectively.
In an of the invention preferred embodiment, each of which guard conductor be arranged at circuit substrate surface metal forming or
Conductive material layer.
In a preferred embodiment of the invention, each of which guard conductor is respectively with radial fashion spread configuration in opening
Around.
In a preferred embodiment of the invention, its split shed is the circular perforations being arranged on circuit substrate, opening
Diameter in the range of 0.3mm to 3mm, and the tip portion of each guard conductor apart from the edge of opening spacing between
The scope of the diameter of 0.5 times to 1.5 times of opening.
In a preferred embodiment of the invention, wherein electronic building brick is acoustic energy transition components, humidity component, temperature sense
Survey component, pressure-sensing component are a Detection of Air Quality component.
In a preferred embodiment of the invention, wherein electronic building brick is a microphone assembly, is open as microphone assembly
MIC.
The beneficial effects of the present invention is static discharge electric arc can be induced court by point discharge principle by guard conductor
To guard conductor, and the ground path via circuit substrate is grounded, therefore, it is possible to avoid static discharge electric arc from passing through circuit substrate
Opening touch electronic building brick, with avoid electronic building brick be subject to electrostatic breakdown.
To enable the feature and technology contents that are further understood that the present invention, refer to below in connection with the present invention specifically
Bright and accompanying drawing, but appended accompanying drawing is only provided with reference to being used with explanation, not for the present invention person of being any limitation as.
Description of the drawings
Fig. 1 is the vertical view organigram of one embodiment of electrostatic protection structure of the present invention.
Fig. 2 is shown by the combination profile construction taken along the II-II lines of Fig. 1 of one embodiment of electrostatic protection structure of the present invention
It is intended to.
Fig. 3 is the D structure schematic diagram of one embodiment of electrostatic protection structure of the present invention.
Specific embodiment
The technology of the present invention is to apply to the electrostatic protection structure 1 used by the static sensitive electronic component on electronic product.
The electrostatic protection structure 1 of the present invention includes multiple guard conductors 20, and Fig. 1 to Fig. 3 show one using electrostatic of the invention
The organigram of the circuit substrate 10 and electronic building brick 30 of the electronic product of safeguard structure 1.Wherein, the electronic building brick 30 can
Think a surface mount (SMT) electronic building brick, and a surface of circuit substrate 10, the circuit are fixedly welded on by weld pad 31
Substrate 10 can be the printed circuit board (PCB) of multiple field, and one is provided with circuit substrate 10 and electronic building brick 30 is corresponding opens
Mouthfuls 11, therefore the position of the electronic building brick 30 and the opening 11 mutually overlaps, and will not be stopped by circuit substrate 10.
Wherein, the electronic building brick 30 can be the acoustic energy conversion of the types such as mike, the speaker of portable electronic products
Component, to the source of sound input as portable electronic products or output device, or the temperature sensing component of electronic product,
Humidity component, pressure-sensing component, Detection of Air Quality component or other kinds of sensing component, to detect that electronics is produced
The parameters such as the temperature of product context, humidity, pressure and air quality.And the position of the opening 11 arranged on the circuit substrate 10
Put corresponding with electronic building brick 30, the effect of the opening 11 as mike or the MIC of speaker, or can be made
For the passage of other kinds of sensor, so that the air of electronics external can touch electronics group via opening 11
Part 30.
The electrostatic protection structure main purpose of the present invention is to prevent opening of the static discharge electric arc 100 by circuit substrate 10
11, and cause electronic building brick 30 to be subject to electrostatic breakdown, to reach the purpose of electrostatic defending.
As shown in Figure 1, Figure 2 and Figure 3, the electrostatic defending technological means that the present invention is adopted, predominantly on circuit substrate 10
Relative to another surface of electronic building brick 30, and the position being adjacent to around opening 11 arranges multiple guard conductors 20, to pass through
Point discharge principle, the electric arc induction that static discharge is produced towards guard conductor 20, to avoid static discharge electric arc 100 from opening
Mouth 11 is by circuit substrate 10, and causes electronic building brick 30 to be subject to electrostatic breakdown.
As shown in figure 1, in the embodiment, multiple guard conductors 20 are by the metal for being arranged at 10 surface of circuit substrate
Paper tinsel or conductive material layer are formed, the molding mode of multiple guard conductors 20, can be adopted with development of photoresist, and
Metal material layer or conductor material layer are taken shape in 10 surface of circuit substrate by the technical matters such as coordination galvanization, depositing or coating, with
Form multiple guard conductors 20.Or multiple guard conductors 20 can be by 10 surface of circuit substrate is made a reservation for
Arrange after insulation material layer or welding resisting layer at 20 position of the guard conductor remove so that the conducting metal on circuit substrate 10
Expose, to form multiple guard conductors 20.
Multiple 20 outlines of the guard conductor are triangular in shape or the shape of wedge shape, and each guard conductor 20 has one respectively
Tip portion 21, the width of the tip portion 21 of guard conductor 20 are less than the width at 20 remaining position of guard conductor.Each protection
Conductor 20 is respectively with equidistantly and with radial fashion spread configuration around the opening 11 of circuit substrate 10, and each protection
The tip portion 21 of conductor 20 is respectively facing the center of opening 11, hence in so that the tip portion 21 of multiple guard conductors 20
Distance is looped around the periphery of opening 11 at equal intervals.The earth lead respectively with circuit substrate 10 of multiple guard conductors 20
Road (not shown) is electrically connected with, hence in so that guard conductor 20 forms ground connection.
The effect of the multiple guard conductors of the present invention 20, it is quiet to be that region near the opening 11 of circuit substrate 10 produces
During discharge of electricity, by point discharge principle, the electric charge of electrostatic is induced to into guard conductor 20, to avoid static discharge electric arc 100
By opening 11, and electronic building brick 30 is destroyed by static discharge electric arc 100.
As shown in Figures 2 and 3, the tip portion 21 of multiple guard conductors 20 is surrounded and is adjacent to the week of opening 11
Enclose, when 11 adjacent domain of opening produces electrostatic charge, each guard conductor 20 can be subject to electrostatic induction and produce electric field, and
According to point discharge principle, the electric field intensity of conductive surface can be inversely proportional to conductive surface product, therefore when guard conductor 20 is subject to
When electrostatic induction produces electric field, the electric field intensity of tip portion 21 can be more than the electric field intensity at 20 remaining position of guard conductor, because
The gas for causing 21 adjacent domain of tip portion of guard conductor 20 is dissociated into ionizing by this, therefore when circuit substrate 10
When 11 near zones that are open produce static discharge, static discharge electric arc 100 can be inhaled by the dissociated ion near tip portion 21
Draw, and be guided to the tip portion 21 of guard conductor 20, be then grounded via the ground path of circuit substrate 10 again.
As shown in Fig. 2 the present invention is by said method, multiple guard conductors 20 can pass through point discharge principle,
The static discharge induction ground connection that 11 near zone of opening is produced, hence in so that static discharge electric arc 100 will not be from circuit substrate
10 opening 11 passes through, and avoids electronic building brick 30 from touching static discharge electric arc 100 and go to pot.
As shown in figure 1, the mesh to reach the opening 11 that can effectively prevent static discharge electric arc 100 by circuit substrate 10
, in this embodiment of the invention, the size and relative position of the opening 11 of each guard conductor 20 and circuit substrate 10 can be with
Following manner is arranged.Wherein, it is described opening 11 can be a circular perforations, and be open 11 diameter d1 can arrange between
The scope of 0.3mm to 3mm, and the tip portion 21 of each guard conductor 20 apart from the edge of opening 11 spacing d2 then between
0.5 times to 1.5 times of 11 diameter of the opening.According to aforesaid way arrangement, it is possible to so that guard conductor 20 is apart from opening 11
The distance at center is held in appropriate scope, to guarantee that from opening 11 static discharge for passing through can be by guard conductor 20
Tip portion 21 is induced, to reach the purpose for preventing really static discharge from passing through from opening 11.
The electrostatic protection structure 1 of the present invention can be adjacent to the region near opening 11 in electronic product and produce static discharge
When, the induction of static discharge electric arc 100 is directly left the opening 11 of circuit substrate 10, and avoids being adjacent to the electronics group of opening 11
Part 30 touches the electric current of static discharge generation, therefore can more be effectively prevented from electronic building brick 30 by electrostatic breakdown.Review
Existing electronic building brick electrostatic defending technology, it is most to adopt electrostatic grounding or concatenation electrostatic defending component, therefore work as electrostatic
When electric discharge is produced, the electric current of electrostatic still can be by the body of electronic building brick, therefore the electrostatic protection structure of the present invention and existing
Technology is compared with more sophisticated electrostatic protection effect.
Additionally, the electrostatic protection structure 1 of the present invention, plurality of guard conductor 20 is directly molded on circuit substrate 10,
Therefore it is not required to electrostatic defending component is arranged on circuit substrate 10, is also not required to electrostatic defending net is arranged in the casing of electronic product
Deng component, therefore, it is possible to simplify electronic product structure, will not also increase the technique and cost of circuit substrate.
The foregoing is only the preferable possible embodiments of the present invention, the scope of the claims that is non-therefore limiting to the present invention, therefore all fortune
Changed with the equivalence techniques done by description of the invention and accompanying drawing content, be both contained in protection scope of the present invention.
Claims (6)
1. a kind of electrostatic protection structure, wherein an electronic building brick is arranged on a surface of a circuit substrate, the circuit substrate
The position of the correspondence electronic building brick arranges one and is open, it is characterised in that the electronic building brick electrostatic protection structure includes：
Multiple guard conductors, multiple guard conductors are arranged on the circuit substrate relative to the another of the electronic building brick
On surface and it is adjacent to around the opening；
Each guard conductor has a tip portion respectively, and each guard conductor is respectively with the tip portion direction
The direction spread configuration at the center of the opening around the opening, and each guard conductor respectively with the circuit
One ground path of substrate is electrically connected with.
2. electrostatic protection structure as claimed in claim 1, it is characterised in that guard conductor is to be arranged at described in each of which
State the metal forming or conductive material layer on circuit substrate surface.
3. electrostatic protection structure as claimed in claim 2, it is characterised in that guard conductor described in each of which is respectively radiating
Shape mode spread configuration is around the opening.
4. electrostatic protection structure as claimed in claim 3, it is characterised in that wherein described opening is arranged at the circuit for
Circular perforations on substrate, the diameter of the opening is in the range of 0.3mm to 3mm, and the point of each guard conductor
Scope of the spacing at the edge being open described in the partial distance of end between the diameter of 0.5 times to 1.5 times of the opening.
5. electrostatic protection structure as claimed in claim 4, it is characterised in that wherein described electronic building brick is acoustic energy conversion group
Part, humidity component, temperature sensing component, pressure-sensing component are a Detection of Air Quality component.
6. electrostatic protection structure as claimed in claim 5, it is characterised in that wherein described electronic building brick is a mike group
Part, the opening are the MIC of the microphone assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710063586.XA CN106604533B (en) | 2017-02-03 | 2017-02-03 | Electrostatic protection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710063586.XA CN106604533B (en) | 2017-02-03 | 2017-02-03 | Electrostatic protection structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106604533A true CN106604533A (en) | 2017-04-26 |
| CN106604533B CN106604533B (en) | 2019-08-16 |
Family
ID=58586706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710063586.XA Active CN106604533B (en) | 2017-02-03 | 2017-02-03 | Electrostatic protection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106604533B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108650370A (en) * | 2018-03-30 | 2018-10-12 | 努比亚技术有限公司 | A kind of terminal protection set and its mobile terminal with ESD protection structure |
| CN108834011A (en) * | 2018-05-30 | 2018-11-16 | 出门问问信息科技有限公司 | A kind of pair of microphone carries out the method and device of electrostatic protection |
| CN109195295A (en) * | 2018-08-27 | 2019-01-11 | 出门问问信息科技有限公司 | Electronic equipment |
| CN111629505A (en) * | 2020-06-04 | 2020-09-04 | 无锡睿勤科技有限公司 | Electrostatic protection device, light distance induction assembly and electronic equipment |
| CN112040696A (en) * | 2020-09-15 | 2020-12-04 | 中磊电子（苏州）有限公司 | Net device with electrostatic protection function |
| WO2021220631A1 (en) * | 2020-04-30 | 2021-11-04 | ソニーグループ株式会社 | Electronic device |
| WO2023225790A1 (en) * | 2022-05-23 | 2023-11-30 | 京东方科技集团股份有限公司 | Flexible circuit board and display module |
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| CN101616536A (en) * | 2008-06-25 | 2009-12-30 | 胜华科技股份有限公司 | The circuit board of tool electrostatic discharge protective and use its Liquid Crystal Module and electronic installation |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108650370A (en) * | 2018-03-30 | 2018-10-12 | 努比亚技术有限公司 | A kind of terminal protection set and its mobile terminal with ESD protection structure |
| CN108834011A (en) * | 2018-05-30 | 2018-11-16 | 出门问问信息科技有限公司 | A kind of pair of microphone carries out the method and device of electrostatic protection |
| CN109195295A (en) * | 2018-08-27 | 2019-01-11 | 出门问问信息科技有限公司 | Electronic equipment |
| WO2021220631A1 (en) * | 2020-04-30 | 2021-11-04 | ソニーグループ株式会社 | Electronic device |
| CN111629505A (en) * | 2020-06-04 | 2020-09-04 | 无锡睿勤科技有限公司 | Electrostatic protection device, light distance induction assembly and electronic equipment |
| CN112040696A (en) * | 2020-09-15 | 2020-12-04 | 中磊电子（苏州）有限公司 | Net device with electrostatic protection function |
| CN112040696B (en) * | 2020-09-15 | 2021-09-14 | 中磊电子（苏州）有限公司 | Net device with electrostatic protection function |
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| WO2023225790A1 (en) * | 2022-05-23 | 2023-11-30 | 京东方科技集团股份有限公司 | Flexible circuit board and display module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106604533B (en) | 2019-08-16 |
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