CN209150108U - A kind of electrostatic protection device - Google Patents
A kind of electrostatic protection device Download PDFInfo
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- CN209150108U CN209150108U CN201822238541.4U CN201822238541U CN209150108U CN 209150108 U CN209150108 U CN 209150108U CN 201822238541 U CN201822238541 U CN 201822238541U CN 209150108 U CN209150108 U CN 209150108U
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- annulus
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Abstract
The utility model provides a kind of electrostatic protection device, including conducting wire, discharge tip, ground connection annulus or ground connection cylinder；The discharge tip is connect with conducting wire, and the conducting wire is passed through from the center of circle of ground connection annulus or the axle center of ground connection cylinder；The discharge tip is located in ground connection annulus or in the radial annulus of ground connection cylinder, and the radial direction annulus is parallel with the ground connection bottom surface of cylinder.The utility model greatly improves the success rate that point discharge induces static discharge by the way that a plurality of discharge channel is arranged.
Description
Technical field
The utility model belongs to chip technology field, more particularly to a kind of electrostatic protection device.
Background technique
IC chip is that the integrated circuit for forming a large amount of microelectronic component is placed on one piece of modeling base, is then made into one piece
Chip, now nearly all chip seen, can be called IC chip, with the continuous development of science and technology and constantly into
Step, IC chip has been widely used in the every field of our lives, but the control module of IC is easy to be quiet by access electric current
The influence of electricity, and then influence the performance of IC chip.
Since half a century, the accidents such as electrostatic catches fire caused by electronics industry, explodes are too numerous to enumerate.Only American Electronic row
Industry is as high as several hundred hundred million dollars because losing caused by electrostatic every year, and therefore, electrostatic protection is reducing loss, promoting quality and consumption
Have great importance in terms of efficiency.
With the rapid development and extensive use of conductor technology and integrated circuit industry, device small in size, integrated level is high
Part is more received by the market, and this demand also causes spacing between conducting wire smaller and smaller, and internal oxidation film is gradually thinning, while also leading
Cause influence of the device to electrostatic very sharp, so that some small voltages may puncture these electronic devices.And electronics produces
Generated electrostatic potential is but considerably beyond its pressure voltage during production, transport, storage and transhipment etc. are a series of for product, this is just
The breakdown or failure that may cause device, influence the reliability of product.So having to pay attention to the protection of electrostatic, fundamentally solve
Certainly this problem.
In electronics industry, influence of the energy of static discharge (ESD) for traditional devices is not easy to be discovered by people.But
For because route spacing it is short, route area is small and causes to reduce pressure, for the highly dense component that resistance to current capacity is reduced, ESD
Often become its fatal killer.
Static discharge can also cause more serious problem that may not be found when any part is tested since electrostatic is put
Device caused by electricity is inferior, if finding component failure in subsequent assembly, will lead to and does over again or replace caused by device
Increased costs.Once device fails in working site, repairing or renewal cost can find than the fabrication stage and solve the problems, such as institute
The expense needed spends more 100 times or more.After some electronic components are by electrostatic discharge damage, the certain performances of product are only shown
The decline of parameter, but entirely ineffective degree has not yet been reached, such as can not often it be found without comprehensively detecting.Such as set of digits
At the increase of circuit electric current incoming level after electrostatic discharge damage, will not be generally found in circuit function test；Or
Static discharge make product occur can self-healing breakdown or other non-lethal damages, but this effect can add up, to be formed
Potential hidden danger, catastrophic failure can occur in the case where continuing to use, and be not only difficult to expect but also can not screen in advance.
It is described to be used to that human body is isolated since semiconductor fingerprint extracting device surface is exposed in air in actual use
The insulating protective layer of skin surface and detecting electrode is only one layer of very thin protective film, and human body highest can be taken under normal conditions
Ten thousand volts of electrostatic potential (especially such case is very common under the dry environment in the north) is even crossed with several kilovolts, in this way, on
During stating fingerprint collecting, electrostatic potential can also be coupled to each detecting electrode by capacitor between each plate, using this
Detecting electrode is conducted to the internal pull-up circuit of sensor, and expendable destruction will be caused to semiconductor fingerprint extracting device.
Therefore, how to enhance antistatic protection function, be the key that semiconductor fingerprint extracting device enhance one's market competitiveness consideration point one of.
Summary of the invention
In order to solve the problems existing in the prior art, the utility model provides a kind of electrostatic protection device, has several and puts
Electric channel improves the success rate that point discharge induces static discharge.
Electrostatic protection device provided by the utility model, including conducting wire, discharge tip, ground connection annulus or ground connection cylinder；Institute
It states discharge tip to connect with conducting wire, the conducting wire is passed through from the center of circle of ground connection annulus or the axle center of ground connection cylinder；The discharge tip
End is located in ground connection annulus or in the radial annulus of ground connection cylinder, and the radial direction annulus is parallel with the ground connection bottom surface of cylinder.By
In within the scope of the front end 180 degree in discharge tip, it is logical that a plurality of electric discharge is formed between discharge tip and ground connection annulus or ground connection cylinder
Road greatly improves the success rate that electric discharge induces static discharge.
Discharge tip described in the utility model is overlapped with the axis in the center of circle of ground connection annulus or ground connection cylinder or close coincidence.
Discharge tip corresponds to ground connection annulus or the radial annulus for being grounded cylinder, the center of circle or ground connection cylinder of discharge tip and ground connection annulus
Axis be overlapped or close to being overlapped so that in the range of 180 degree of the discharge tip in front of it, the free end of discharge tip is to connecing
Ground annulus or be grounded cylinder radial annulus semi-circular arc any point distance it is all equal or close to equal, be consequently formed
Several discharge channels length it is all equal or close to equal, greatly improve the success rate that point discharge induces static discharge,
Due to the equal length of discharge channel or close to equal, discharge channel will not be illusory.
For the quantity for further increasing discharge channel, the ground connection annulus or the radial annulus for being grounded cylinder are interior with multiple
Discharge tip, multiple discharge tips are uniformly distributed in the circumferential direction of ground connection ground connection annulus or the radial annulus for being grounded cylinder, pass through
It is uniformly distributed, avoids interfering with each other between neighbouring discharge tip.
Ground connection annulus described in the utility model is grounded in the radial annulus of cylinder with multiple discharge tips, multiple electric discharges
Tip is uniformly distributed in the circumferential direction of ground connection annulus or the radial annulus for being grounded cylinder.This electrostatic protection device passes through setting
Multiple discharge tips, the shortest distance phase between the free end and the radial annulus of ground connection annulus or ground connection cylinder of each discharge tip
Deng, so that at least there are multiple equidistant discharge channels, the success rate of raising point discharge induction static discharge.
To avoid interfering with each other between neighbouring discharge tip, the discharge tip is in ground connection ground connection annulus or is grounded cylinder
It is uniformly distributed in the circumferential direction of radial annulus.
The quantity of the discharge tip is 4-8, and 4-8 discharge tip is arranged, on the one hand can guarantee discharge channel number
Amount improves electric discharge success rate, and on the other hand, 4-8 discharge tip can be preferably distributed in the circumferential, avoids neighbouring discharge sharp
Interfering with each other between end.
The utility model further includes electric discharge annulus, electric discharge annulus and the ground connection annulus or is grounded cylinder concentric, described
Electric discharge annulus is connect with conducting wire, and on electric discharge annulus, discharge tip is connected by electric discharge annulus and conducting wire for the discharge tip setting
It connects, by setting electric discharge annulus, convenient for the arrangement of discharge tip.
To further increase the success rate that point discharge induces static discharge, along the length direction of the conducting wire, interval is set
It is equipped with multiple groups discharge tip.
To avoid interfering with each other, multiple groups discharge tip is uniformly distributed on the length direction of conducting wire.
The discharge tip of the utility model corresponds to ground connection annulus or the circular arc for being grounded cylinder, can be formed between the two more
Discharge channel, allows electrostatic induced current to discharge from arbitrary discharge channel, to improve the success that point discharge induces static discharge
Rate.The utility model also passes through setting, so that the equal length with a plurality of discharge channel or close to equal, avoids because of distance
It is far and near and cause channel illusory.
Detailed description of the invention
Fig. 1 is utility model diagram；
Fig. 2 is for discharge tip to ground connection cylinder apart from schematic diagram one；
Fig. 3 is for discharge tip to ground connection cylinder apart from schematic diagram two.
In figure: 1- conducting wire；2- insulation crust；3- annulus tip；4- is grounded cylinder；5- discharge channel；6- electric discharge annulus.
Specific embodiment
Embodiment one:
As shown in Figure 1, electrostatic protection device provided by the utility model, including conducting wire 1, several put is connected on conducting wire 1
Electric tip.Be grounded cylinder 4 be arranged outside conducting wire 1, conducting wire 1 from ground connection cylinder 4 axle center pass through, discharge tip and ground connection cylinder it
Between have gap.The outer enclosure of ground connection cylinder 4 has insulation crust 2.Discharge tip is Chong Die with the ground connection axle center of cylinder 4 or close
(electronic component size is smaller, and discharge tip approximation is Chong Die with the ground connection axle center of cylinder 4 for overlapping.The utility model is as real as possible
Now be overlapped), as shown in figure 3, within the scope of the front end 180 degree of discharge tip, discharge tip to be grounded cylinder 4 radial annulus (with
The bottom surface for being grounded cylinder is parallel) circular arc on each point be equidistant or close to equal.So set, making in each discharge tip
End forms discharge channel 40 with ground connection cylinder 4 respectively, and (specific gap, discharges shown in figure between discharge tip and ground connection cylinder
Channel 40 is not " lines " drawn in figure), and the distance of each discharge channel is equal.It is corresponding using discharge tip
It is grounded this arrangement of cylinder, so that all may be the discharge path of electrostatic electric arc in front of discharge tip within the scope of 180 °.
Due to the increase of discharge channel, the probalility of success of electrostatic induced discharge is just improved in turn, so that electrostatic induced current is easier through excessive
Discharge channel and the service life for dissipating, while also can be further improved discharge tip and being grounded tip.It can from Fig. 1
It arrives, in the radial annulus of ground connection cylinder, is provided with multiple discharge tips, each discharge tip is located at the same diameter of ground connection cylinder
Into annulus, the distance of discharge tip to radial annulus is all equal；4-8 discharge tip can be set, discharge tip is in radial direction
It is uniformly distributed in circular circumferential direction.
The utility model can also be arranged in this way: multiple discharge tips are arranged in the same radial annulus of ground connection cylinder
The shortest distance at end, each discharge tip to radial annulus is all equal, in this way, it is logical to form a plurality of equidistant electric discharge
Road improves static discharge success rate.
As shown in Figure 1, several discharge tips can arrange in the circumferential direction of ground connection cylinder 4, perfectly even arrange, forms one
Group, at the same time it can also arrange multiple groups along the length direction of conducting wire 1.The utility model can also further carry out ground connection cylinder 4
It improves, has three groups of discharge tips in Fig. 1, every group of discharge tip forms annulus, can correspond to each annulus, is arranged one newly
Ground connection annulus come replace ground connection cylinder 4, ground connection annulus and discharge tip formed annulus concentric, in this way, in three groups of electric discharges
The external of tip forms three groups of new ground connection annulus, this three groups new ground connection annulus replace ground connection cylinder, that is to say, that ground connection circle
If column 4 is divided into stem portion.It is grounded annulus or ground connection cylinder 4 is grounded.
Embodiment two:
As shown in Figure 1, electrostatic protection device provided by the utility model, including conducting wire 1, three groups are coupled on conducting wire 1 and is put
Electric annulus 6, discharge annulus 6 arranged for interval, perfectly even arranged for interval on the length direction of conducting wire 1.The circumferential direction of electric discharge annulus 6
Upper to have several annulus tips 3, annulus tip 3 is preferably evenly arranged on electric discharge annulus 6.The discharge tip discharged on annulus 6
General settable 4 to 8, discharge effect is relatively good, while can be to avoid interfering between each other.The outside of electric discharge annulus 6
It is cased with ground connection cylinder 4, is grounded cylinder 4, the axle center for the annulus 6 that discharges is overlapped with conducting wire 1.It is grounded 4 covering of cylinder and insulation crust is housed
2.Discharge channel 5 is formed between the annulus tip 3 and ground connection cylinder 4 of electric discharge annulus 6 (to have between discharge tip and ground connection cylinder
Body gap, discharge channel 5 shown in figure are not " lines " drawn in figure).As shown in figure 3, discharge tip setting is being discharged
On annulus, discharge tip is connect by the annulus that discharges with conducting wire 1；Within the scope of the 180 degree of the front end of discharge tip, discharge tip
It is not completely equivalent at a distance to each point of the radial annulus (parallel with the bottom surface of ground connection cylinder 4) of ground connection cylinder 4, i.e. electric discharge is logical
5 Length discrepancy of road.Multiple discharge tips are set on electric discharge annulus, in this way, each discharge tip and the shortest distance of radial annulus are
Equal, a plurality of equidistant discharge channel can be equally formed, static discharge success rate is improved.
Since electronic component size is smaller, can as far as possible will electric discharge annulus do it is small so that discharge tip and ground connection
The axle center of cylinder 4 is close to being overlapped, in this way, discharge tip arrives the distance of each point of radial annulus close to equal, several of formation
Close to equal discharge channel.
The utility model can also further improve ground connection cylinder 4, have three groups of electric discharge annulus 6 in Fig. 1, can be with
Corresponding to each electric discharge annulus 6, a new ground connection annulus is set to replace ground connection cylinder 4, in this way, in three groups of electric discharge annulus
Outside forms three groups of new ground connection annulus, ground connection annulus and electric discharge 6 concentric of annulus, this three groups new ground connection annulus replace ground connection
Cylinder, that is to say, that if ground connection cylinder 4 is divided into stem portion.It is grounded annulus or ground connection cylinder 4 is grounded.
Since the route that static discharge is walked not is all straight lines, so be easy to causeing connecing for discharge tip and front
The failure of discharge channel that ground part is constituted, and electrostatic can not be imported into ground terminal and dissipation electrostatic along ground.The utility model
Ground connection annulus or ground connection cylinder are cased with outside discharge tip 3, discharge tip 3 can form a plurality of put with ground connection annulus or ground connection cylinder
Power path；Due to the electric discharge annulus and ground connection annulus or ground connection cylinder concentric where discharge tip 3, discharge tip 3 is before it
It holds within the scope of 180 °, the discharge channel formed between discharge tip and ground connection annulus is all equidistant, that is to say, that every puts
The distance of power path is all identical, without because distance causes channel illusory.Due to increasing for discharge channel, make electrostatic electric
Stream discharges from arbitrary discharge channel, to improve the success rate that point discharge induces static discharge.
Electrostatic protection device provided by the utility model, electric discharge annulus, discharge tip, ground connection cylinder are all conductive metals
It is made.On the structure shown in figure 1, the left and right both ends of conducting wire 1 can be designed to two pins, the pin of left end and chip
Guard electrode connection, the pin ground connection of right end thus can be using electrostatic protection device provided by the utility model as first device
Part is mounted on any chip, realizes electrostatic protection.Electrostatic is exported through conducting wire, logical through discharging from the discharge tip on electric discharge annulus
It releases in road.
Claims (9)
1. a kind of electrostatic protection device, it is characterised in that: including conducting wire, discharge tip, ground connection annulus or ground connection cylinder；It is described to put
Electric tip is connect with conducting wire, and the conducting wire is passed through from the center of circle of ground connection annulus or the axle center of ground connection cylinder；The discharge tip position
In in ground connection annulus or in the radial annulus of ground connection cylinder, the radial direction annulus is parallel with the ground connection bottom surface of cylinder.
2. electrostatic protection device as described in claim 1, it is characterised in that: the discharge tip and ground connection annulus the center of circle or
The axis for being grounded cylinder is overlapped or close coincidence.
3. electrostatic protection device as claimed in claim 2, it is characterised in that: the ground connection annulus or the radial direction circle for being grounded cylinder
There are multiple discharge tips, multiple discharge tips are uniformly divided in the circumferential direction of ground connection annulus or the radial annulus for being grounded cylinder in ring
Cloth.
4. electrostatic protection device as described in claim 1, it is characterised in that: including at least two discharge tips, each discharge tip
The shortest distance between the free end at end and the radial annulus of ground connection annulus or ground connection cylinder is equal.
5. electrostatic protection device as claimed in claim 4, it is characterised in that: the discharge tip is in ground connection ground connection annulus or connects
It is uniformly distributed in the circumferential direction of the radial annulus of ground cylinder.
6. the electrostatic protection device as described in claim 1-5 any claim, it is characterised in that: the number of the discharge tip
Amount is 4-8.
7. the electrostatic protection device as described in claim 1-5 any claim, it is characterised in that: it further include electric discharge annulus,
The annulus that discharges is connect with the ground connection annulus or ground connection cylinder concentric, the electric discharge annulus with conducting wire, and the discharge tip is set
It sets on electric discharge annulus, discharge tip is connect by the annulus that discharges with conducting wire.
8. the electrostatic protection device as described in claim 1-5 any claim, it is characterised in that: along the length of the conducting wire
Direction is arranged at intervals with multiple groups discharge tip.
9. electrostatic protection device as claimed in claim 8, it is characterised in that: multiple groups discharge tip is on the length direction of conducting wire
It is uniformly distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822238541.4U CN209150108U (en) | 2018-12-28 | 2018-12-28 | A kind of electrostatic protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822238541.4U CN209150108U (en) | 2018-12-28 | 2018-12-28 | A kind of electrostatic protection device |
Publications (1)
| Publication Number | Publication Date |
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| CN209150108U true CN209150108U (en) | 2019-07-23 |
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ID=67290970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822238541.4U Active CN209150108U (en) | 2018-12-28 | 2018-12-28 | A kind of electrostatic protection device |
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| Country | Link |
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| CN (1) | CN209150108U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109545777A (en) * | 2018-12-28 | 2019-03-29 | 江苏邦融微电子有限公司 | A kind of electrostatic protection device |
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2018
- 2018-12-28 CN CN201822238541.4U patent/CN209150108U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109545777A (en) * | 2018-12-28 | 2019-03-29 | 江苏邦融微电子有限公司 | A kind of electrostatic protection device |
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