CN106604533B - Electrostatic protection structure - Google Patents
Electrostatic protection structure Download PDFInfo
- Publication number
- CN106604533B CN106604533B CN201710063586.XA CN201710063586A CN106604533B CN 106604533 B CN106604533 B CN 106604533B CN 201710063586 A CN201710063586 A CN 201710063586A CN 106604533 B CN106604533 B CN 106604533B
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- CN
- China
- Prior art keywords
- opening
- building brick
- circuit substrate
- electronic building
- electrostatic protection
- 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.)
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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
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Elimination Of Static Electricity (AREA)
Abstract
The invention discloses a kind of electrostatic protection structures, and including a circuit substrate and multiple guard conductors, the circuit substrate has an opening；Multiple guard conductors are set to the position of the periphery on the one side of circuit substrate and adjacent to opening；Each guard conductor is respectively provided with a tip portion, and each guard conductor is arranged around opening with the direction at tip portion towards the center of opening respectively, and each guard conductor is electrically connected with a ground path of circuit substrate respectively.The guard conductor can induce static discharge electric arc towards guard conductor, therefore can be avoided opening of the static discharge electric arc by circuit substrate, to avoid the electronic building brick neighbouring with the opening by electrostatic breakdown.
Description
Technical field
It is the present invention relates to a kind of electrostatic protection structure, in particular to a kind of to prevent static discharge electric arc from passing through action electricity
The opening of sub- product, to avoid the electrostatic protection structure of electronic building brick destruction by electrostatic field.
Background technique
With Mobile Communications technology make rapid progress development, such as mobile phone, tablet computer, smartwatch, with oneself
The portable electronic products such as media player are increasingly fashionable, since such product convenience is small and exquisite, powerful, have become our days
Scarce important communication tool can not be obtained in normal life and work.
In general, the sound energy transition components of the types such as microphone, loudspeaker can be arranged on portable electronic products, using as
The source of sound of portable electronic products inputs and output device.Further, since portable electronic products function is gradually diversified, existing row
The electronic building brick type being arranged on dynamic electronic product also increasingly increases, and temperature biography can be arranged on such as wisdom bracelet or smartwatch
The electronic building bricks such as sensor, pressure sensor, humidity sensor, air quality detector.The type electronic building brick is usually electrostatic
Sensitive electrical components, it is relatively easy to must be provided with electrostatic protection measure appropriate by electrostatic breakdown, therefore on electronic product, with
Prevent electronic building brick by electrostatic breakdown.
In order to avoid such harm, the manufacturer of electronic product has the design of related consideration in the production process, common
Ground, protecting the means of electrostatic is usually by electrostatic grounding or to add two kinds of circuit of blocking, in a handheld the source of sound letter of electronic product
Number input/output end port for, be in the connection line of sound source signal input/output end port addition protection electronics group
Part, such as: filter transformer (Filter Transformer), to stop or release electrostatic energy, to reach electrostatic protection
Purpose.
However, unquestionable, increasing electrostatic protection component increases the manufacturing cost of electronic product.Furthermore it is existing
It is smart small that capable electronic product pursues powerful and volume, so that designer has to simplify group in limited design space
Part, therefore increase electrostatic protection component and undoubtedly will increase the difficulty of design.
If in addition, general portable electronic products setting microphone, loudspeaker, temperature sensor, humidity sensor or sky
When the electronic building bricks such as makings amount detector, it will usually which the position setting for corresponding to the electronic building brick on casing and circuit substrate is opened
Mouth or through-hole, using the sound hole as microphone, or are the venthole of electronic building brick.And people are using these portable electronics
When product, may because of contact of the movement with other objects of human body itself under dry climatic environment, separate, rub or feel
Factors should be waited and generate electrostatic (ESD), and the electric arc that electrostatic generates can be via holding on the shell and circuit substrate of electronic product
Mouth or through-hole are directly entered, it is thus possible to electronic building brick can be made by the static discharge electric arc passed through from the opening or through-hole
It destroys.
However, electrostatic protection electronic building brick is the connecting line for being serially connected in electronic building brick in existing electrostatic protection structure
On the road, it therefore is merely able to prevent the electrostatic induced current conducted from the route of circuit substrate from destroying electronic building brick, 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 by electrostatic breakdown.
To prevent the opening from casing or circuit substrate or the electrostatic electric arc being punched through from destroying electronic building brick, existing row
Dynamic electronic product majority, which is used, is arranged a chain link fence in the opening of casing or the outside of through-hole, however in electronic product enclosure
Opening protective net is set, it will so that the volume of electronic product increases, and for miniature microphone assembly, also discomfort
Setting chain link fence is closed, so that the utilization of this kind of electrostatic protection structure is restricted.
Due to above, causing existing electrostatic protection structure, there are quite a lot of disadvantages, therefore how to be designed by structure
Improvement, the effect of Lai Tisheng portable electronic products electrostatic protection, to overcome above-mentioned defect, it has also become this cause is intended to solve
One of important topic certainly.
Summary of the invention
It is an object of that present invention to provide a kind of electrostatic protection structures, particularly relate to a kind of to prevent static discharge electric arc logical
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 set to a surface of a circuit substrate
On, circuit substrate corresponds to one opening of position setting of electronic building brick, and electrostatic protection structure includes: multiple guard conductors, Duo Gefang
Body is protected and led to be set on circuit substrate relative on another surface of electronic building brick and around opening；It is each to prevent protecting and leading
Body is respectively provided with a tip portion, each guard conductor respectively with the direction at tip portion towards the center of opening be arranged 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, wherein each guard conductor be set to surface of circuit substrate metal foil or
Conductive material layer.
In a preferred embodiment of the invention, wherein each guard conductor is arranged with radial fashion in opening respectively
Around.
In a preferred embodiment of the invention, split shed is the circular perforations being set on circuit substrate, opening
Diameter in the range of 0.3mm to 3mm, and each guard conductor tip portion distance opening edge spacing between
The range 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 sound 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
Sound hole.
The beneficial effects of the present invention are guard conductors static discharge electric arc to be induced court by point discharge principle
It is grounded to guard conductor, and via the ground path of circuit substrate, therefore can be avoided static discharge electric arc and pass through circuit substrate
Opening touch electronic building brick, to avoid electronic building brick by electrostatic breakdown.
Be further understood that feature and technology contents of the invention to be enabled, please refer to below in connection with it is of the invention specifically
Bright and attached drawing, however appended attached drawing is only for reference and description, the person of being not intended to limit the present invention.
Detailed description of the invention
Fig. 1 is the vertical view organigram of one embodiment of electrostatic protection structure of the present invention.
Fig. 2 shows for the combination profile construction of one embodiment of electrostatic protection structure of the present invention taken along the II-II line of Fig. 1
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 electrostatic protection structure 1 used in the static sensitive electronic component that applies on electronic product.
Electrostatic protection structure 1 of the invention includes multiple guard conductors 20, and Fig. 1 to Fig. 3 show one and uses electrostatic of the invention
The circuit substrate 10 of the electronic product of safeguard structure 1 and the organigram of electronic building brick 30.Wherein, the electronic building brick 30 can
Think a surface mount (SMT) electronic building brick, and is fixedly welded on a surface of circuit substrate 10, the circuit by weld pad 31
Substrate 10 can be the printed circuit board of multiple field, and in being provided with one on circuit substrate 10 and electronic building brick 30 is corresponding opens
Mouth 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 converted for the sound of the types such as microphone, the loudspeaker of portable electronic products
Component, to as portable electronic products source of sound input 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 are produced to detect electronics
The parameters such as temperature, humidity, pressure and the air quality of product context.And the position for the opening 11 being arranged on the circuit substrate 10
Set corresponding with electronic building brick 30, the effect of the opening 11 can be used as the sound hole of microphone or loudspeaker, or work
For the venthole of other kinds of sensor, so that the air of electronics external can touch electronics group via opening 11
Part 30.
Electrostatic protection structure main purpose of the invention is the opening for preventing static discharge electric arc 100 from passing through circuit substrate 10
11, and make electronic building brick 30 by electrostatic breakdown, to achieve the purpose that electrostatic protection.
As shown in Figure 1, Figure 2 and Figure 3, the electrostatic protection technological means that the present invention uses, predominantly on circuit substrate 10
Relative to another surface of electronic building brick 30, and multiple guard conductors 20 are arranged in the position around opening 11, to pass through
Point discharge principle, the electric arc induction that static discharge is generated is towards guard conductor 20, to avoid static discharge electric arc 100 from opening
Mouth 11 makes electronic building brick 30 by electrostatic breakdown by circuit substrate 10.
As shown in Figure 1, multiple guard conductors 20 are the metals by being set to 10 surface of circuit substrate in the embodiment
Foil or conductive material layer are formed, and the molding mode of multiple guard conductors 20 can be used 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 for by making a reservation for 10 surface of circuit substrate
After the insulation material layer at 20 position of guard conductor or soldermask layer removal is arranged, so that the conductive metal on circuit substrate 10
Expose, to form multiple guard conductors 20.
Multiple 20 outlines of guard conductor shape triangular in shape or wedge-shaped, and each guard conductor 20 is respectively provided with one
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 with radial fashion respectively equidistantly and to be arranged 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, so that the tip portion 21 of multiple guard conductors 20
Distance is looped around the periphery of opening 11 at equal intervals.Multiple guard conductors 20 respectively with a ground line of circuit substrate 10
Road (not shown) is electrically connected, so that guard conductor 20 forms ground connection.
The effect of the multiple guard conductors 20 of the present invention generates quiet for the region near the opening 11 of circuit substrate 10
When discharge of electricity, by point discharge principle, the charge of electrostatic is induced to 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 surrounded and adjacent to the week of opening 11
It encloses, when 11 adjacent domains that are open generate electrostatic charge, each guard conductor 20 can be generated electric field by electrostatic induction, and
According to point discharge principle, the electric field strength of conductive surface can and conductive surface product be inversely proportional, therefore when guard conductor 20 by
When electrostatic induction generates electric field, the electric field strength of tip portion 21 can be greater than the electric field strength at 20 remaining position of guard conductor, because
The gas for 21 adjacent domain of tip portion for making guard conductor 20 is dissociated into ionization by this, therefore when circuit substrate 10
When 11 near zones that are open generate 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, is then grounded again via the ground path of circuit substrate 10.
As shown in Fig. 2, the present invention is by the above method, multiple guard conductors 20 can by point discharge principle,
The static discharge that 11 near zones generate that will be open induces ground connection, so that static discharge electric arc 100 will not be from circuit substrate
10 opening 11 passes through, and electronic building brick 30 is avoided to touch static discharge electric arc 100 and go to pot.
As shown in Figure 1, to reach the mesh for the opening 11 that static discharge electric arc 100 can be effectively prevent by circuit substrate 10
, the size and relative position of each guard conductor 20 and the opening 11 of circuit substrate 10 can be in this embodiment of the invention
Following manner arrangement.Wherein, it is described opening 11 can be a circular perforations, and be open 11 diameter d1 can arrange between
The range of 0.3mm to 3mm, and the tip portion 21 of each guard conductor 20 apart from opening 11 edge spacing d2 then between
0.5 times to 1.5 times of 11 diameter of the opening.According to aforesaid way arrangement, will enable guard conductor 20 apart from opening 11
The distance at center is held in appropriate range, to ensure that the static discharge passed through from opening 11 can be by guard conductor 20
Tip portion 21 is induced, to achieve the purpose that prevent static discharge from passing through from opening 11 really.
Electrostatic protection structure 1 of the invention can generate static discharge in region of the electronic product near opening 11
When, static discharge electric arc 100 is directly induced to the opening 11 for leaving circuit substrate 10, and avoid the electronics group adjacent to 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.It reviews
Existing electronic building brick electrostatic protection technology, majority either concatenates electrostatic protection component using electrostatic grounding, therefore works as electrostatic
When electric discharge generates, the electric current of electrostatic still can be by the ontology of electronic building brick, therefore electrostatic protection structure of the invention and existing
Technology, which is compared, has more perfect electrostatic protection effect.
In addition, electrostatic protection structure 1 of the invention, plurality of guard conductor 20 is directly molded on circuit substrate 10,
Therefore it is not required to that electrostatic protection component is arranged on circuit substrate 10, is also not required to that electrostatic protection net is arranged on the casing of electronic product
Equal components, therefore electronic product structure can be simplified, the technique and cost of circuit substrate will not be increased.
The foregoing is merely preferable possible embodiments of the invention, non-therefore limitation the scope of the patents of the invention, therefore all fortune
The equivalence techniques variation made of description of the invention and accompanying drawing content, is both contained in protection scope of the present invention.
Claims (6)
1. a kind of electrostatic protection structure, wherein an electronic building brick is set on a surface of a circuit substrate, the circuit substrate
One opening of position setting of the corresponding electronic building brick, which is characterized in that the electronic building brick electrostatic protection structure includes:
Multiple guard conductors, multiple guard conductors are set on the circuit substrate relative to the another of the electronic building brick
On surface and around the opening；
Each guard conductor is respectively provided with a tip portion, and each guard conductor is respectively with the tip portion direction
The direction at the center of the opening is arranged around the opening, and each guard conductor respectively with the circuit
One ground path of substrate is electrically connected；
The electronic building brick passes through the air outside the opening contact；
The position of multiple guard conductor settings is only limited on surface of the circuit substrate relative to the electronic building brick, often
One guard conductor extends relative to the direction that the other end of the tip portion is directed away from the opening, and each institute
The spacing at edge of the tip portion of guard conductor apart from the opening is stated between the diameter of 0.5 times to 1.5 times of the opening
Range.
2. electrostatic protection structure as described in claim 1, which is characterized in that wherein each guard conductor is is set to
State the metal foil or conductive material layer of surface of circuit substrate.
3. electrostatic protection structure as claimed in claim 2, which is characterized in that wherein each guard conductor is respectively with radiation
Shape mode is arranged around the opening.
4. electrostatic protection structure as claimed in claim 3, which is characterized in that wherein the opening is set to the circuit for one
Circular perforations on substrate, the diameter of the opening is in the range of 0.3mm to 3mm.
5. electrostatic protection structure as claimed in claim 4, which is characterized in that wherein the electronic building brick is sound energy conversion group
Part, humidity component or temperature sensing component or pressure-sensing component are a Detection of Air Quality component.
6. electrostatic protection structure as claimed in claim 5, which is characterized in that wherein the electronic building brick is a microphone group
Part, the opening are the sound hole 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 CN106604533A (en) | 2017-04-26 |
| CN106604533B true 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 |
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| Country | Link |
|---|---|
| CN (1) | CN106604533B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108650370B (en) * | 2018-03-30 | 2021-01-26 | 努比亚技术有限公司 | Terminal protection cover with ESD protective structure and mobile terminal thereof |
| CN108834011B (en) * | 2018-05-30 | 2020-08-11 | 出门问问信息科技有限公司 | Method and device for performing electrostatic protection on microphone |
| 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 |
| CN111629505B (en) * | 2020-06-04 | 2024-02-20 | 无锡睿勤科技有限公司 | Electrostatic protection device, light distance sensing assembly and electronic equipment |
| CN112040696B (en) * | 2020-09-15 | 2021-09-14 | 中磊电子（苏州）有限公司 | Net device with electrostatic protection function |
| 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 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105828227A (en) * | 2015-08-28 | 2016-08-03 | 维沃移动通信有限公司 | Microphone electrostatic protection device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101616536B (en) * | 2008-06-25 | 2011-06-29 | 胜华科技股份有限公司 | Circuit board with electrostatic discharge protection as well as liquid crystal module and electronic device applying same |
| CN101932186A (en) * | 2009-06-22 | 2010-12-29 | 亚旭电脑股份有限公司 | Electrostatic protection method and structure of electronic product |
| CN102300381B (en) * | 2010-06-25 | 2015-01-14 | 和硕联合科技股份有限公司 | Electronic device |
| CN106293166A (en) * | 2015-05-14 | 2017-01-04 | 南昌欧菲光科技有限公司 | Contactor control device and electronic equipment |
| CN204667359U (en) * | 2015-05-14 | 2015-09-23 | 南昌欧菲光科技有限公司 | Contactor control device and electronic equipment |
-
2017
- 2017-02-03 CN CN201710063586.XA patent/CN106604533B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105828227A (en) * | 2015-08-28 | 2016-08-03 | 维沃移动通信有限公司 | Microphone electrostatic protection device |
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| Publication number | Publication date |
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| CN106604533A (en) | 2017-04-26 |
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