CN203734300U - Electrostatic protection structure of integrated circuit of electrostatic discharge cabinet - Google Patents

Electrostatic protection structure of integrated circuit of electrostatic discharge cabinet Download PDF

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Publication number
CN203734300U
CN203734300U CN201320746960.3U CN201320746960U CN203734300U CN 203734300 U CN203734300 U CN 203734300U CN 201320746960 U CN201320746960 U CN 201320746960U CN 203734300 U CN203734300 U CN 203734300U
Authority
CN
China
Prior art keywords
discharge
circuit
protection structure
integrated circuit
electrostatic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201320746960.3U
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Chinese (zh)
Inventor
宋建波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IST (SHANGHAI) DETECTION TECHNOLOGY CO., LTD.
Original Assignee
Innovative & Soperior Technologies (shanghai) Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Innovative & Soperior Technologies (shanghai) Co Ltd filed Critical Innovative & Soperior Technologies (shanghai) Co Ltd
Priority to CN201320746960.3U priority Critical patent/CN203734300U/en
Application granted granted Critical
Publication of CN203734300U publication Critical patent/CN203734300U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses an electrostatic protection structure of an integrated circuit of an electrostatic discharge cabinet. The integrated circuit includes a charging circuit and a discharging circuit, the charging circuit includes a power supply, a power switch, a discharge switch and a discharge capacitor, which are connected in series, the discharging circuit includes the discharge capacitor, the discharge switch and a device to be detected, which are connected in series, and a protective resistor is connected to the device to be detected in parallel. According to the electrostatic protection structure disclosed by the utility model, the protective resistor of 10000 Ohm is connected to the device to be detected in parallel to form a bypass discharge circuit, so as to eliminate the potential difference between the two ends of a pin of the device to be detected, and solve the problem of parasitic capacitance of an existing electrostatic simulation testing machine when testing an integrated circuit with advanced process, in order to make the test result of the existing electrostatic simulation testing machine be more accurate.

Description

A kind of integrated circuit electrostatic protection structure of static discharge board
Technical field
The utility model relates to a kind of static discharge board, especially a kind of integrated circuit electrostatic protection structure of static discharge board.
Background technology
Impact due to static discharge board endophyte electric capacity and integrated circuit self internal resistance, causes on the pin of integrated circuit, before electrostatic pulse electric discharge, has produced an electrical potential difference.This electrical potential difference can cause partial electrostatic protection circuit when electrostatic pulse arrives, and cannot normally open, and carrys out leakage current, protection internal circuit, to such an extent as to cause ic failure.As shown in Figure 1, circuit diagram for existing Discharge Switch of ESD Simulator, discharge switch S1 is switched to charged electrical terminal 21, discharge capacity C1 is done after charging action, S1 is switched to discharge circuit end 22 again, device under test (DUT) 23 is done and discharged, thereby complete once the action of complete static discharge.As shown in Figure 2, before pulse arrives ic pin, on pin, there is a voltage to exist.So electrostatic test board now, due to design reasons, inevasible meeting produces endophyte electric capacity, if cannot eliminate, can cause test result to depart from actual result.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of parasitic capacitance problems can solve existing electrostatic simulation test machine for the integrated circuit testing of advanced process time, and the integrated circuit electrostatic protection structure that makes the more accurate static discharge board of result of existing electrostatic simulation test machine test.
For realizing above-mentioned technique effect, the utility model discloses a kind of integrated circuit electrostatic protection structure of static discharge board, described integrated circuit comprises a charging circuit and a discharge circuit, described charging circuit comprises a power supply, a mains switch, a discharge switch and the discharge capacity being connected in series, described discharge circuit comprises the described discharge capacity being connected in series, described discharge switch and a device under test, is connected in parallel to a preventative resistance on described device under test.
The utility model further improves and is, the resistance of described preventative resistance is 10 kilo-ohms.
The utility model further improves and is, described discharge switch is a dual control reversing switch, comprises a charged electrical terminal and a discharge circuit end.
The utility model further improves and is, on described charging circuit, be also provided with a charging resistor, described charging resistor and described power supply are connected in series.
The utility model further improves and is, on described discharge circuit, be also provided with a discharge resistance, described discharge resistance and described discharge capacity are connected in series.
The utility model is owing to having adopted above technical scheme, making it have following beneficial effect is: by be connected in parallel the preventative resistance of one 10 kilo-ohms on device under test, form a bypass discharge circuit, eliminate the electrical potential difference between device under test pin two ends, the existing electrostatic simulation test machine of parasitic capacitance problems while having solved to(for) the integrated circuit testing of advanced process, makes the test result of existing electrostatic simulation test machine more accurate.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of existing Discharge Switch of ESD Simulator.
Fig. 2 is the front voltage curve schematic diagram of the pulse of existing Discharge Switch of ESD Simulator.
Fig. 3 is the circuit diagram of the integrated circuit electrostatic protection structure of a kind of static discharge board of the utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
Consult shown in Fig. 3, the integrated circuit electrostatic protection structure of a kind of static discharge board of the present utility model, wherein, integrated circuit comprises a charging circuit 11 and a discharge circuit 12, charging circuit 11 further comprises a power supply 13, a charging resistor 191, a mains switch 14, a discharge switch 15 and the discharge capacity 16 being connected in series, and discharge circuit 12 further comprises discharge capacity 16, discharge switch 14, a discharge resistance 192 and the device under test 17 being connected in series.Discharge switch 15 is a dual control reversing switch, comprise a charged electrical terminal 151 and a discharge circuit end 152, discharge switch 15 is switched to charged electrical terminal 151, discharge capacity 16 is done after charging action, discharge switch 15 is switched to discharge circuit end 152, device under test 17 is done and discharged, thereby complete once the action of complete static discharge.On device under test 17, be further connected in parallel to a preventative resistance 18, the resistance of preventative resistance 18 is 10 kilo-ohms, device under test 17 is parallel to behind device under test 17 pin two ends, form a bypass discharge circuit, eliminate the electrical potential difference between device under test 17 pin two ends, thereby effectively improve the operating efficiency of integrated circuit electrostatic discharge protection circuit.
Below embodiment has been described in detail the utility model by reference to the accompanying drawings, and those skilled in the art can make many variations example to the utility model according to the above description.Thereby some details in embodiment should not form restriction of the present utility model, the utility model will be usingd scope that appended claims defines as protection range of the present utility model.

Claims (5)

1. the integrated circuit electrostatic protection structure of a static discharge board, it is characterized in that: described integrated circuit comprises a charging circuit and a discharge circuit, described charging circuit comprises a power supply, a mains switch, a discharge switch and the discharge capacity being connected in series, described discharge circuit comprises the described discharge capacity being connected in series, described discharge switch and a device under test, is connected in parallel to a preventative resistance on described device under test.
2. electrostatic protection structure as claimed in claim 1, is characterized in that: the resistance of described preventative resistance is 10 kilo-ohms.
3. electrostatic protection structure as claimed in claim 2, is characterized in that: described discharge switch is a dual control reversing switch, comprises a charged electrical terminal and a discharge circuit end.
4. electrostatic protection structure as claimed in claim 3, is characterized in that: on described charging circuit, be also provided with a charging resistor, described charging resistor and described power supply are connected in series.
5. electrostatic protection structure as claimed in claim 3, is characterized in that: on described discharge circuit, be also provided with a discharge resistance, described discharge resistance and described discharge capacity are connected in series.
CN201320746960.3U 2013-11-22 2013-11-22 Electrostatic protection structure of integrated circuit of electrostatic discharge cabinet Expired - Fee Related CN203734300U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320746960.3U CN203734300U (en) 2013-11-22 2013-11-22 Electrostatic protection structure of integrated circuit of electrostatic discharge cabinet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320746960.3U CN203734300U (en) 2013-11-22 2013-11-22 Electrostatic protection structure of integrated circuit of electrostatic discharge cabinet

Publications (1)

Publication Number Publication Date
CN203734300U true CN203734300U (en) 2014-07-23

Family

ID=51204346

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320746960.3U Expired - Fee Related CN203734300U (en) 2013-11-22 2013-11-22 Electrostatic protection structure of integrated circuit of electrostatic discharge cabinet

Country Status (1)

Country Link
CN (1) CN203734300U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019089005A1 (en) * 2017-10-31 2019-05-09 Hewlett-Packard Development Company, L.P. 3d object parts and cage fabrication

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019089005A1 (en) * 2017-10-31 2019-05-09 Hewlett-Packard Development Company, L.P. 3d object parts and cage fabrication
US11420396B2 (en) 2017-10-31 2022-08-23 Hewlett-Packard Development Co., L.P. 3D object parts and cage fabrication

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee

Owner name: YITE (SHANGHAI) DETECTION TECHNOLOGY CO., LTD.

Free format text: FORMER NAME: INNOVATIVE + SUPERIOR TECHNOLOGY (SHANGHAI) CORP.

CP03 Change of name, title or address

Address after: 201103 room C101, building, No. 1618, Minhang District, Shanghai, Yishan Road

Patentee after: IST (SHANGHAI) DETECTION TECHNOLOGY CO., LTD.

Address before: 201103, Shanghai, Minhang District Yishan Road 1618 Building 1 floor

Patentee before: Innovative & Soperior Technologies (Shanghai) Co., Ltd.

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140723

Termination date: 20191122