WO1996020806A1 - Verfahren zum prüfen von durch ultraschalldrahtbonden hergestellten verbindungen - Google Patents
Verfahren zum prüfen von durch ultraschalldrahtbonden hergestellten verbindungen Download PDFInfo
- Publication number
- WO1996020806A1 WO1996020806A1 PCT/DE1995/001686 DE9501686W WO9620806A1 WO 1996020806 A1 WO1996020806 A1 WO 1996020806A1 DE 9501686 W DE9501686 W DE 9501686W WO 9620806 A1 WO9620806 A1 WO 9620806A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- connection
- bond
- strength
- wire
- bonding
- 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.)
- Ceased
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/002—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating specially adapted for particular articles or work
- B23K20/004—Wire welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/10—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating making use of vibrations, e.g. ultrasonic welding
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W72/00—Interconnections or connectors in packages
- H10W72/071—Connecting or disconnecting
- H10W72/0711—Apparatus therefor
- H10W72/07141—Means for applying energy, e.g. ovens or lasers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W72/00—Interconnections or connectors in packages
- H10W72/071—Connecting or disconnecting
- H10W72/075—Connecting or disconnecting of bond wires
- H10W72/07531—Techniques
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W72/00—Interconnections or connectors in packages
- H10W72/071—Connecting or disconnecting
- H10W72/075—Connecting or disconnecting of bond wires
- H10W72/07531—Techniques
- H10W72/07532—Compression bonding, e.g. thermocompression bonding
- H10W72/07533—Ultrasonic bonding, e.g. thermosonic bonding
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W72/00—Interconnections or connectors in packages
- H10W72/50—Bond wires
- H10W72/531—Shapes of wire connectors
- H10W72/5363—Shapes of wire connectors the connected ends being wedge-shaped
Definitions
- the invention is based on a method for testing connections produced by ultrasonic wire bonding according to the preamble of the main claim.
- the strength is determined in the shear, tensile and peel test. This process can only be carried out on a random basis, so that it cannot meet the high quality requirements of modern mass production.
- features of the main claim have the advantage that each individual connection is non-destructively checked for strength or quality without additional expenditure of time, and an unforeseen occurrence of disturbance variables impairing strength can be recognized in good time.
- Advantageous refinements of the method according to the main claim are possible through the measures listed in the subclaims.
- Process assurance module generates a signal for the removal of the relevant components when a connection is found that does not meet the specified quality standard. With an appropriate design, this means that the production flow does not have to be interrupted by a discharge process.
- the course of the wire deformation during the bonding process can be easily and reliably detected by a contactless sensor.
- the bond wedge amplitude can advantageously be determined by detecting and evaluating the current consumption of the ultrasound device.
- the method according to the invention is preferably applicable to wedge-wedge bond welding methods.
- FIG. 1 shows the parts of a wedge-wedge bond welding device that are of interest in the present context
- FIG. 2 shows the vibration profile in the bond wedge tool according to FIG. 1
- FIGS. 3 and 4 show the time profiles of the amplitudes and transmitted to the wire, determined in preliminary tests for a specific application the wire deformation for clean and for contaminated contact surfaces on the wire and on the substrate.
- the bond welding device has a fixed support 10 for the substrate 12 to which the wire 14 is to be welded by bonding.
- a bond wedge tool 16 is used, which is designed in the usual way and interacts with the wire 14.
- the bond wedge tool 16 is pressed in the bonding process by a force P against the wire end to be connected and the substrate 12.
- an ultrasound device (not shown) transmits an oscillation energy E to the bond wedge tool 16, the amplitude profile of which in
- the force P and the vibration energy E are dimensioned such that the tensile strength of the connection reaches or exceeds a predetermined value with clean contact surfaces on the wire 14 and substrate 12. It can be seen from FIG. 2 that the input amplitude a_ of the vibration energy E is greater than the output amplitude a 2 transmitted to the wire 14. This caused by the friction between the wire 14, substrate 12 and bond wedge tool 16 damping effect is smaller, the more the contact surfaces of the wire and substrate are contaminated by hand perspiration, oil or the like.
- the present invention takes advantage of this fact by querying and evaluating the output amplitude & 2 during the bonding process.
- the sizes or temporal profiles of the output amplitude & 2 for clean and for contaminated contact surfaces are determined by preliminary tests which are geared to a specific application.
- Surrender 3 shows curve A for clean and curve B for contaminated contact surfaces.
- Curve A is now stored as a master curve in a process assurance module which is queried at two different times t 2 and t 2 during the bonding process beginning at time t 0 .
- the process safety module now decides whether the values of the output amplitude a2 determined at these times correspond to the value on curve A or lie within a predetermined tolerance range. If this is not the case, the
- Process safety module trigger a signal for the need to eject the relevant components.
- the speed or the time course of the wire deformation is also determined as a further parameter for the strength or quality of the bond connection.
- the diagram according to FIG. 4 shows the distance b over the process time t, which takes up the working surface of the bond wedge tool 16 to a reference plane on the support 10 or the substrate 12. With clean contact surfaces there is a deformation curve according to curve C, with contaminated contact surfaces there is a slower curve according to curve D. Curve C is stored as a master curve in the process control module and - like curve A - is used to assess the actual values of the wire deformation determined at times t ⁇ and t2.
- the measurements can be evaluated in such a way that there is a signal for the ejection of components if only one measured value lies outside the specified tolerance range for the corresponding master curve A or C.
- the method can also be chosen so that the measured values recorded at time 2 are rated higher than those at
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wire Bonding (AREA)
- Manufacturing Of Electrical Connectors (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP95938352A EP0800433B1 (de) | 1994-12-29 | 1995-11-29 | Verfahren zum prüfen von durch ultraschalldrahtbonden hergestellten verbindungen |
| DE59507106T DE59507106D1 (de) | 1994-12-29 | 1995-11-29 | Verfahren zum prüfen von durch ultraschalldrahtbonden hergestellten verbindungen |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4447073.8 | 1994-12-29 | ||
| DE4447073A DE4447073C1 (de) | 1994-12-29 | 1994-12-29 | Verfahren zum Prüfen von durch Ultraschalldrahtbonden hergestellten Verbindungen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1996020806A1 true WO1996020806A1 (de) | 1996-07-11 |
Family
ID=6537402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE1995/001686 Ceased WO1996020806A1 (de) | 1994-12-29 | 1995-11-29 | Verfahren zum prüfen von durch ultraschalldrahtbonden hergestellten verbindungen |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0800433B1 (de) |
| DE (2) | DE4447073C1 (de) |
| ES (1) | ES2138758T3 (de) |
| WO (1) | WO1996020806A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8020746B2 (en) | 2006-09-05 | 2011-09-20 | Technische Universitaet Berlin | Method and device for controlling the generation of ultrasonic wire bonds |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6393924B1 (en) * | 1997-11-10 | 2002-05-28 | Schunk Ultraschalltechnik Gmbh | Testing method for non-destructive testing of a welded connector, a testing device and an ultrasonic welding apparatus having such a device |
| DE10030007C2 (de) * | 2000-06-17 | 2002-04-18 | Bosch Gmbh Robert | Verfahren und Vorrichtung zum Prüfen der Festigkeit von Verbindungen |
| DE10110048A1 (de) * | 2001-03-02 | 2002-09-05 | Bosch Gmbh Robert | Verfahren zum Prüfen von durch Ultraschall-Drahtbonden hergestellten Verbindungen |
| DE50110953D1 (de) | 2001-11-07 | 2006-10-19 | F & K Delvotec Bondtech Gmbh | Prüfverfahren für Bondverbindungen und Drahtbonder |
| DE102017101736A1 (de) | 2017-01-30 | 2018-08-02 | F&K Delvotec Bondtechnik Gmbh | Verfahren zur Herstellung von Drahtbondverbindungen und Anordnung zur Durchführung des Verfahrens |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3890831A (en) * | 1973-01-19 | 1975-06-24 | Us Navy | Ultrasonic bond monitor |
| US4040885A (en) * | 1974-07-09 | 1977-08-09 | U.S. Philips Corporation | Ultrasonic bonding apparatus |
| DE3429776A1 (de) * | 1984-08-13 | 1986-02-13 | Siemens AG, 1000 Berlin und 8000 München | Verfahren zur qualitaetskontrolle beim ultraschallschweissen sowie zugehoerige vorrichtung |
| US4606490A (en) * | 1982-08-24 | 1986-08-19 | Asm Assembly Automation Limited | Apparatus and method for automatic evaluation of a bond created by an ultrasonic transducer |
| EP0247291A2 (de) * | 1986-05-30 | 1987-12-02 | Crestek, Inc. | Kontrollgerät zur Überwachung der Güte von mittels Ultraschall hergestellten unlösbaren Verbindungen an Drähten und Verfahren |
| EP0368533A2 (de) * | 1988-11-11 | 1990-05-16 | F & K Delvotec Bondtechnik GmbH | Qualitätskontrolle beim Drahtbinden |
| US4998664A (en) * | 1989-12-22 | 1991-03-12 | Hughes Aircraft Company | Bond signature analyzer |
| EP0498936A1 (de) * | 1991-02-15 | 1992-08-19 | Esec Sa | Verfahren und Einrichtung zur Messung der Schwingungsamplitude an einem Energietransducer |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3701652A1 (de) * | 1987-01-21 | 1988-08-04 | Siemens Ag | Ueberwachung von bondparametern waehrend des bondvorganges |
| DE4131565C2 (de) * | 1991-09-18 | 2002-04-25 | Bleich Karl Heinz | Verfahren zur Optimierung des Schweißprozesses bei Bondverfahren |
-
1994
- 1994-12-29 DE DE4447073A patent/DE4447073C1/de not_active Expired - Fee Related
-
1995
- 1995-11-29 ES ES95938352T patent/ES2138758T3/es not_active Expired - Lifetime
- 1995-11-29 DE DE59507106T patent/DE59507106D1/de not_active Expired - Fee Related
- 1995-11-29 EP EP95938352A patent/EP0800433B1/de not_active Expired - Lifetime
- 1995-11-29 WO PCT/DE1995/001686 patent/WO1996020806A1/de not_active Ceased
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3890831A (en) * | 1973-01-19 | 1975-06-24 | Us Navy | Ultrasonic bond monitor |
| US4040885A (en) * | 1974-07-09 | 1977-08-09 | U.S. Philips Corporation | Ultrasonic bonding apparatus |
| US4606490A (en) * | 1982-08-24 | 1986-08-19 | Asm Assembly Automation Limited | Apparatus and method for automatic evaluation of a bond created by an ultrasonic transducer |
| DE3429776A1 (de) * | 1984-08-13 | 1986-02-13 | Siemens AG, 1000 Berlin und 8000 München | Verfahren zur qualitaetskontrolle beim ultraschallschweissen sowie zugehoerige vorrichtung |
| EP0247291A2 (de) * | 1986-05-30 | 1987-12-02 | Crestek, Inc. | Kontrollgerät zur Überwachung der Güte von mittels Ultraschall hergestellten unlösbaren Verbindungen an Drähten und Verfahren |
| EP0368533A2 (de) * | 1988-11-11 | 1990-05-16 | F & K Delvotec Bondtechnik GmbH | Qualitätskontrolle beim Drahtbinden |
| US4998664A (en) * | 1989-12-22 | 1991-03-12 | Hughes Aircraft Company | Bond signature analyzer |
| EP0498936A1 (de) * | 1991-02-15 | 1992-08-19 | Esec Sa | Verfahren und Einrichtung zur Messung der Schwingungsamplitude an einem Energietransducer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8020746B2 (en) | 2006-09-05 | 2011-09-20 | Technische Universitaet Berlin | Method and device for controlling the generation of ultrasonic wire bonds |
Also Published As
| Publication number | Publication date |
|---|---|
| DE4447073C1 (de) | 1996-07-18 |
| ES2138758T3 (es) | 2000-01-16 |
| EP0800433A1 (de) | 1997-10-15 |
| EP0800433B1 (de) | 1999-10-20 |
| DE59507106D1 (de) | 1999-11-25 |
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