CN2409527Y - Open circuit alarm for electrostatic protection system - Google Patents
Open circuit alarm for electrostatic protection system Download PDFInfo
- Publication number
- CN2409527Y CN2409527Y CN 99248559 CN99248559U CN2409527Y CN 2409527 Y CN2409527 Y CN 2409527Y CN 99248559 CN99248559 CN 99248559 CN 99248559 U CN99248559 U CN 99248559U CN 2409527 Y CN2409527 Y CN 2409527Y
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- Prior art keywords
- systems
- discharge protection
- electrostatic discharge
- providing electrostatic
- circuit
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Abstract
The utility model relates to an open circuit alarm for an electrostatic protection system, which comprises a first end which is electrically connected with an electrostatic protection system, a second end which is electrically connected with an earth point and an alarming circuit which is connected with the first end and the second end and sends out an alarming signal according to the earth state of the electrostatic protection system. When an earth system is in an open circuit, the alarming circuit can send out the alarming signal to can make the function of an earth protection system really carried out in the electrostatic protection system.
Description
The utility model relates to a kind of warning horn that opens circuit, and particularly relates to a kind of warning horn that opens circuit that is used for a systems for providing electrostatic discharge protection.
Electronic circuit now, having many is that semiconductor element by precision combines.Semiconductor element in the middle of the process of making, except must be under the free of contamination environment, to static prevent also especially pay attention to.Static may cause the problem of degree of stability and fiduciary level to semiconductor element, still can make whole semiconductor element completely lose function what is more and scraps.Therefore in each links such as the production of semiconductor element, making, test, encapsulation, assembly, the setting of systems for providing electrostatic discharge protection is all arranged, to guarantee the quality of semiconductor element.
Remove this, make the manufacturer of various electronic product to utilizing semiconductor element, also dare not be careless to the injury that static may cause, usually when the charging of SIC (semiconductor integrated circuit) (IC) element, can do the screening of element earlier, (IC) detects in advance problematic integrated circuit, in order to avoid the quality of electronic product is produced in influence.This class is used for the platform of screening SIC (semiconductor integrated circuit) and also must be provided with systems for providing electrostatic discharge protection, otherwise in the process that detects, just may make original not integrated circuit of damage become defective products because of the destruction of static.
Fig. 1 is existing systems for providing electrostatic discharge protection synoptic diagram.The generation of static is normally produced by human body 11.For the platform of screening SIC (semiconductor integrated circuit), may be operator from the screening integrated circuit.Operator may be that the pin of inspecting integrated circuit has the model that does not have tangible bending or integrated circuit wrong etc. in the content of screening integrated circuit.In order to prevent the destruction of static, human body 11 must connect electrostatic ring 15, and electrostatic ring 15 can be considered as a resistance, and band is on the wrist of human body 11 usually, and its resistance value is about about 1M ohm.Electrostatic ring 15 is to be connected to electrostatic defending earthed system 12, electrostatic defending earthed system 12 is then joined with power ground system 13 and earth terminal 14 (grounded screen or ground rod), so as to when human body 11 produces static, directly the electric charge with static imports earth terminal, and can not import the electronic component in detected.
Existing systems for providing electrostatic discharge protection has following shortcoming:
Systems for providing electrostatic discharge protection is by the power ground system static that human body produces of releasing, just in case systems for providing electrostatic discharge protection generation breaking phenomena, just can't be with electrostatic leakage that human body produced to greatly, may cause the electric charge of static free to the element of SIC (semiconductor integrated circuit), make the integrated circuit infringement, thus, systems for providing electrostatic discharge protection then performs practically no function.
The purpose of this utility model is to overcome the defective that above-mentioned prior art exists, and the warning horn that opens circuit that proposes to be used for a systems for providing electrostatic discharge protection makes it when earthed system opens circuit, can send the design of alert news, make the function of ground protection system really to implement in systems for providing electrostatic discharge protection.
The purpose of this utility model is realized by following technical scheme.A kind of warning horn that opens circuit that is used for a systems for providing electrostatic discharge protection according to the utility model proposes is characterized in that it comprises: one first end is to be electrically connected this systems for providing electrostatic discharge protection; One second end is to be electrically connected an earth terminal; And a warning circuit, be to be electrically connected this first end and this second end, and, send an alarm signal in response to a ground connection situation of this systems for providing electrostatic discharge protection.
The purpose of this utility model can also further realize by following technical measures.
The aforesaid warning horn that opens circuit that is used for a systems for providing electrostatic discharge protection, wherein this systems for providing electrostatic discharge protection comprises: a static receives end, is to connect human body and this systems for providing electrostatic discharge protection, in order to absorb the static of human body.
The aforesaid warning horn that opens circuit that is used for a systems for providing electrostatic discharge protection, wherein this static receive the end be an electrostatic ring or a static clothing.
The aforesaid warning horn that opens circuit that is used for a systems for providing electrostatic discharge protection, wherein this earth terminal is a grounded screen or a ground rod.
The aforesaid warning horn that opens circuit that is used for a systems for providing electrostatic discharge protection, wherein this warning circuit is to receive the conducting situation of end and this second end in response to this static, and sends this alarm signal.
The aforesaid warning horn that opens circuit that is used for a systems for providing electrostatic discharge protection, wherein this conducting situation is the situation that opens circuit, this alarm signal is one first alarm signal, and when this situation that opens circuit took place, this ground connection situation of this systems for providing electrostatic discharge protection was to be in an earthing failure state.
The aforesaid warning horn that opens circuit that is used for a systems for providing electrostatic discharge protection, wherein this situation that opens circuit is meant that it is the resistance infinity that this static receives between end and this earth terminal.
The aforesaid warning horn that opens circuit that is used for a systems for providing electrostatic discharge protection, wherein this first alarm signal is to be a cresset, wherein this cresset color is red.
The aforesaid warning horn that opens circuit that is used for a systems for providing electrostatic discharge protection, wherein this conducting situation is a path situation, this alarm signal is to be one second alarm signal, and under this path situation, this ground connection situation of this systems for providing electrostatic discharge protection is to be in a ground connection effective status.
The aforesaid warning horn that opens circuit that is used for a systems for providing electrostatic discharge protection, wherein this path situation is meant that this static receives between end and this earth terminal for conducting.
The aforesaid warning horn that opens circuit that is used for a systems for providing electrostatic discharge protection, wherein this second alarm signal is to be a cresset, wherein this cresset color can be green.
The aforesaid warning horn that opens circuit that is used for a systems for providing electrostatic discharge protection, wherein this systems for providing electrostatic discharge protection is to be located at an integrated circuit (IC) element workbench.
The aforesaid warning horn that opens circuit that is used for a systems for providing electrostatic discharge protection, wherein under normal condition, the coil R1 of relay receives earth terminal fully, therefore produce magnetic force, contact meeting conducting, contact b opens circuit, therefore green light is shinny, and red colored lamp and attention device do not open circuit owing to contact, so do not produce effect; And under up-set condition, the coil of relay does not have electric current to flow through, and contact can open circuit, contact is conducting then, and green light does not have electric current to flow through, so do not work, and red colored lamp and attention device have electric current to flow through, so can send red cresset and the few unnecessary loss of alarm song.
The utility model compared with prior art has tangible advantage and good effect.By above technical scheme as can be known, the utility model is used for the warning horn that opens circuit of a systems for providing electrostatic discharge protection can detect whether opening circuit of earthed system, send alert news in good time, can make the operating personnel when earthed system breaks down, stop detection or other manufacturing processes of semiconductor element, lowering the probability that integrated circuit or electronic product are scrapped, otherwise then can enhance productivity.
Concrete structure of the present utility model is provided in detail by following examples and accompanying drawing thereof.
Fig. 1 is existing systems for providing electrostatic discharge protection.
Fig. 2 is the systems for providing electrostatic discharge protection of the utility model preferred embodiment.
Fig. 3 is the detailed circuit diagram of warning horn of opening circuit.
Below in conjunction with accompanying drawing and preferred embodiment, to according to the warning horn that opens circuit that is used for a systems for providing electrostatic discharge protection that the utility model proposes, its concrete structure, feature and effect thereof, describe in detail as after.
See also shown in Figure 2, the utility model is used for the warning horn that opens circuit of a systems for providing electrostatic discharge protection, be to be connected in aforesaid systems for providing electrostatic discharge protection, its first end 211 is the electrostatic defending earthed systems 12 that connect this systems for providing electrostatic discharge protection, second end 212 is to be electrically connected to earth terminal 14, and its warning circuit 21 is to connect first end 211 and this second end 212, when this systems for providing electrostatic discharge protection opens circuit, and send an alarm signal.
Described systems for providing electrostatic discharge protection has an electrostatic ring 15 to receive end as static, is to connect between human body 11 and this electrostatic defending earthed system 12, and be static in order to the absorption human body.Certainly, this static receives end can also be a static clothing.
Aspect earth terminal, it can be a grounded screen or is a ground rod.21 conducting situations of this warning circuit in response to this electrostatic ring 15 (or static clothing) and this second end 211, and send this alarm signal.Certainly, this conducting situation is the situation that opens circuit, and this alarm signal is the alert news that first alarm signal of a red cresset comes the apprizing system earthing failure.From another angle, when the situation that opens circuit took place, this static received and is the resistance infinity between end and this earth terminal, and people can drive a relay (relay) action whereby, and then send red caution cresset.
Certainly, if the conducting situation is good, between electrostatic defending earthed system 12 and the earth terminal path situation, then this alarm signal is second alarm signal of a green cresset, is to be in a ground connection effective status so as to the ground state of informing systems for providing electrostatic discharge protection 12.On circuit design, then can drive above-mentioned relay by the conducting of electrostatic ring 15 with earth terminal, send green cresset.
The utility model is main to be to be used on the workbench of SIC (semiconductor integrated circuit) element, also can be applicable to certainly on semi-conductive other manufacturing process.
Fig. 3 is the detailed circuit diagram of warning horn 21 of opening circuit, and also is the emphasis place of this case.The warning horn that opens circuit acts on mainly whether be to detect earth terminal complete, if ground connection is incomplete, then send red warning lamp R or produce alarm by attention device (Alarm), and under the normal condition, ground connection is normal, so available green orange G shows.
Syndeton and the operating principle of Fig. 3 are as follows: under normal condition, the coil R1 of relay receives earth terminal fully, therefore produce magnetic force, contact a meeting conducting (ON), contact b open circuit (OFF), therefore green light G is shinny, and red colored lamp and attention device do not open circuit (OFF) owing to contact b, so do not produce effect.And under up-set condition, for example earth terminal 14 suspension joints or broken string produce imperfect earth, the coil R1 of relay does not have electric current to flow through, contact a can open circuit (OFF), then conducting of contact b (ON), and green light G does not have electric current to flow through, so do not work, and red colored lamp G and attention device Alarm have electric current to flow through, so can send red cresset and alarm song, notify the staff in time to handle, in order to avoid the expansion of the state of affairs reduces unnecessary loss.
The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did.
Claims (5)
1. warning horn that opens circuit that is used for a systems for providing electrostatic discharge protection is characterized in that it comprises:
One first end is to be electrically connected this systems for providing electrostatic discharge protection;
One second end is to be electrically connected an earth terminal; And
One warning circuit is to be electrically connected this first end and this second end, and in response to a ground connection situation of this systems for providing electrostatic discharge protection, sends an alarm signal.
2. the warning horn that opens circuit that is used for a systems for providing electrostatic discharge protection according to claim 1, it is characterized in that this systems for providing electrostatic discharge protection comprises: a static receives end, is to connect human body and this systems for providing electrostatic discharge protection, in order to absorb the static of human body.
3. the warning horn that opens circuit that is used for a systems for providing electrostatic discharge protection according to claim 1 is characterized in that it is an electrostatic ring or a static clothing that this static receives end.
4. as the warning horn that opens circuit that is used for a systems for providing electrostatic discharge protection according to claim 1, it is characterized in that this earth terminal is a grounded screen or a ground rod.
5. the warning horn that opens circuit that is used for a systems for providing electrostatic discharge protection according to claim 1 is characterized in that under normal condition the coil R1 of relay receives earth terminal fully, contact (a) meeting conducting, and contact b opens circuit; And under up-set condition, contact (a) can open circuit, then conducting of contact (b).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99248559 CN2409527Y (en) | 1999-10-18 | 1999-10-18 | Open circuit alarm for electrostatic protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99248559 CN2409527Y (en) | 1999-10-18 | 1999-10-18 | Open circuit alarm for electrostatic protection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2409527Y true CN2409527Y (en) | 2000-12-06 |
Family
ID=34033722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99248559 Expired - Lifetime CN2409527Y (en) | 1999-10-18 | 1999-10-18 | Open circuit alarm for electrostatic protection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2409527Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798794A (en) * | 2012-08-13 | 2012-11-28 | 深圳市华星光电技术有限公司 | Detection circuit and detection method |
-
1999
- 1999-10-18 CN CN 99248559 patent/CN2409527Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798794A (en) * | 2012-08-13 | 2012-11-28 | 深圳市华星光电技术有限公司 | Detection circuit and detection method |
| CN102798794B (en) * | 2012-08-13 | 2015-11-25 | 深圳市华星光电技术有限公司 | A kind of testing circuit and detection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |