WO2007123026A1 - ワーククランプ及びワイヤボンディング装置 - Google Patents
ワーククランプ及びワイヤボンディング装置 Download PDFInfo
- Publication number
- WO2007123026A1 WO2007123026A1 PCT/JP2007/057901 JP2007057901W WO2007123026A1 WO 2007123026 A1 WO2007123026 A1 WO 2007123026A1 JP 2007057901 W JP2007057901 W JP 2007057901W WO 2007123026 A1 WO2007123026 A1 WO 2007123026A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cavity
- bonding
- gas
- area
- work clamp
- 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
- B23K37/00—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass
- B23K37/04—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
- B23K2101/40—Semiconductor devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/44—Structure, shape, material or disposition of the wire connectors prior to the connecting process
- H01L2224/45—Structure, shape, material or disposition of the wire connectors prior to the connecting process of an individual wire connector
- H01L2224/45001—Core members of the connector
- H01L2224/45099—Material
- H01L2224/451—Material with a principal constituent of the material being a metal or a metalloid, e.g. boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te) and polonium (Po), and alloys thereof
- H01L2224/45138—Material with a principal constituent of the material being a metal or a metalloid, e.g. boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te) and polonium (Po), and alloys thereof the principal constituent melting at a temperature of greater than or equal to 950°C and less than 1550°C
- H01L2224/45147—Copper (Cu) as principal constituent
-
- H10W72/07125—
-
- H10W72/07141—
-
- H10W72/07173—
-
- H10W72/07178—
-
- H10W72/07541—
-
- H10W72/5525—
-
- H10W90/756—
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S228/00—Metal fusion bonding
- Y10S228/904—Wire bonding
Definitions
- the present invention relates to a work clamp and a wire bonding apparatus using the work clamp, and in particular,
- the present invention also relates to a work clamp and a wire bonding apparatus that can sufficiently suppress acidification in a bonding area even if the amount of use of an acid prevention gas is reduced.
- FIG. 5 is a cross-sectional view showing a work clamp of a conventional wire bonding apparatus.
- This work clamp has a mechanism for preventing copper oxidation when the bonding object is a bare copper-one lead frame or when the bonding wire is copper.
- This mechanism introduces an inert gas such as nitrogen gas into the opening 17 leading to the bonding area.
- a semiconductor device force in the form of a lead frame 12 holding a die 18 is placed on a platform or upper plate 29 of a wire bonding apparatus.
- the upper plate 29 has a heating mechanism for raising the temperature of the lead frame 12.
- the wind clamp 16 is for fixing the lead frame 12 on the upper plate 29.
- the opening 17 of the wind clamp 16 is disposed on the lead frame 12 to provide access to the bonding area by wire bonding operations. That is, the bonding area including the die 18 and a part of the lead frame 12 is exposed through the opening 17.
- the wind clamp 16 has a cavity 22 coupled to the opening 17.
- Cover 20 force S Located on the top surface of the windshield 16 and covers the cavity 22 to limit the exposure of the cavity to oxygen-containing atmosphere.
- the wind clamp 16 has a conduit 24 inside thereof for redirecting the nitrogen gas toward the cavity 22.
- Conduit 24 is positioned so that nitrogen gas passes through cavity 22 and is sent to opening 17.
- Nitrogen gas is introduced from the gas inlet 26 of the wind clamp 16.
- the gas inlet 26, the cavity 22 and the opening 17 are in communication with each other.
- the pressure of the nitrogen gas introduced from the cavity 22 into the opening 17 is higher than the pressure of the nitrogen gas introduced from the conduit 24 into the cavity 22.
- the cavity 22 has a larger cross-sectional area than the conduit 24.
- the space 28 serves to receive nitrogen gas from the gas inlet 26 and to pass the nitrogen gas to the cavity 22 through the conduit 24.
- the space 28 distributes nitrogen gas to the lead frame 12 in order to protect the lead frame 12 from oxidizing power.
- the space 28 At the end of the space 28 far from the bonding area 17, it directly communicates with the atmospheric space 28 (see, for example, Patent Document 1).
- Patent Document 1 1132005, 0161488 (Fig. 4)
- Nitrogen gas force introduced from the gas inlet 26 is once discharged into the hollow space 28, enters the cavity 22 through the conduit 24 from this hollow space 28, and flows into the opening 17 which is the bonding area by reducing the flow velocity at this cavity 22. It is. In this way, nitrogen gas is introduced from the gas inlet 26 to prevent outside air from entering the bonding area. As a result, the hollow space 28 tries to prevent oxidation of the lead frame 12 and the opening 17 tries to prevent acidification in the bonding area.
- the nitrogen gas introduced from the gas inlet 26 is once discharged into the hollow space 28, and is then introduced from the hollow space 28 into the cavity 22 through the conduit 24. Therefore, a sufficient amount of nitrogen gas cannot be introduced into the cavity 22 to prevent the oxidation of the bonding area. That is, since the end of the hollow space 28 is connected to the atmosphere, most of the nitrogen gas that has flowed into the hollow space 28 is released to the atmosphere from the end, and the nitrogen introduced into the cavity 22 through the conduit 24 The amount of gas is insufficient. As a result, the acidity in the bonding area cannot be sufficiently suppressed.
- the present invention has been made in consideration of the above-described circumstances, and an object of the present invention is to sufficiently suppress the oxidation of the bonding area even if the amount of the antioxidant gas used is reduced. It is to provide a work clamp and a wire bonding apparatus.
- a work clamp according to the present invention is a work clamp used in a wire bonding apparatus
- An internal hollow part that creates an atmosphere of acid-preventing gas when bonding to the bonding area of the workpiece
- a lower opening provided under the inner hollow portion for entering the bonding area into the inner hollow portion
- a gas inlet provided in the cavity and into which the acid prevention gas is introduced into the cavity;
- the anti-oxidation gas is supplied to the bonding area by flowing the anti-oxidation gas to the upper opening through the cavity and the internal cavity of the work clamp.
- the atmosphere As a result, even if the amount of the antioxidant gas used is reduced, the oxidation of the bonding area can be sufficiently suppressed.
- the oxidation prevention gas is introduced into the cavity from the gas introduction port, and the cavity The cavity is flowed into the internal hollow portion and blown to the portion other than the bonding area through the hole, Preferably, it is discharged from the void through the upper opening to the outside.
- the hole is arranged around the inner hollow portion.
- the gas introduction port is located on the side farthest from the upper opening force.
- a wire bonding apparatus is an apparatus that performs wire bonding on a bonding area of a workpiece
- the work clamp is
- a gas introduction PI that is provided in the cavity and in which an acid-preventing gas is introduced into the cavity;
- the wire bonding apparatus further includes a space provided between the hole and a portion other than the bonding area, and the antioxidant gas is supplied to the gas introduction robot.
- the cavity is allowed to flow through the hole to the space, and bonding is performed while discharging from the inner hollow portion to the outside through the upper opening. Is possible. The invention's effect
- the bonder is used. It is possible to provide a work clamp and a wire bonding apparatus that can sufficiently suppress acidification in the inching area.
- FIG. 1 is a perspective view showing a wire bonding apparatus according to an embodiment of the present invention.
- FIG. 2 is a top view of the work clamp shown in FIG.
- FIG. 3 is a cross-sectional view showing a state in which bonding is performed by holding the workpiece on the stage by the workpiece clamp shown in FIG.
- FIG. 4 (A) is a cross-sectional view of the work clamp shown in FIG. 2 cut along a plane along the gas path, and (B) is a cross-sectional view showing Modification 1 of the work clamp according to the embodiment. (C) is a cross-sectional view showing a second modification of the work clamp according to the embodiment.
- FIG. 5 is a cross-sectional view showing a work clamp of a conventional wire bonding apparatus.
- FIG. 1 is a perspective view showing a wire bonding apparatus according to an embodiment of the present invention.
- FIG. 2 is a top view of the work clamp shown in FIG. Fig. 3 is a cross-sectional view showing a state in which the workpiece is held on the stage by the workpiece clamp shown in Fig. 2 and bonding is performed, and a portion corresponding to the cross section of the workpiece clamp along the arrow 3-3 shown in Fig. 2 Show me! / Fig. 4 (A) is a cross-sectional view of the work clamp shown in Fig. 2 cut along a plane along the gas path.
- the wire bonding apparatus 1 has a bonding head 2, a work clamp 9, and a rail 4.
- a bonding stage is arranged under the work clamp 9.
- the lead frame 6 on which the bonding chip 5 shown in FIG. 3 is placed is the workpiece to be bonded.
- a series of these workpieces moves on the rail 4, and the bonding area of the workpiece (that is, the bonding tip and the lead portion around it) is positioned below the bonding head 2, and the bonding head 2 bonding tool (cavity) 8
- wire bonding is performed on the bonding area.
- the work is moved on the rail 4, the bonding area of the next work is positioned below the bonding head 2, and wire bonding is repeated.
- a heater 7 is provided under the bonding stage 27.
- the heater 7 is for heating the work to about 30 to 500 ° C. when the work is placed on the bonding stage 27 and bonding is performed. Since bonding is performed by heating the workpiece in this way, copper oxide is a problem when the workpiece or bonding wire is copper. Therefore, the work clamp 9 shown in FIG. 2 that holds the work on the bonding stage 27 is provided with a mechanism for suppressing acidification.
- a lead frame 6 as a workpiece to be bonded is held by a workpiece clamp 9 on a heater 7 of a bonding stage. That is, the lead frame 6 is placed on the bonding stage 27, and the lead frame 6 is pressed and held by the bonding stage 27 by the work clamp 9.
- the workpiece clamp 9 provides an atmosphere of an antioxidant gas to the bonding chip 5 which is a bonding area of the workpiece and the surrounding lead frame 6 when bonding is performed. It has an internal hollow part 10.
- a lower opening 11 a for inserting the bonding chip 5 into the inner hollow portion 10 is provided below the inner hollow portion 10.
- the lower opening 11a is formed by the tip of a holding portion 9a that holds the lead frame 6.
- the tip of the pressing portion 9a is pressed while surrounding the bonding area of the lead frame 6.
- the inner hollow part 10 side and the outer side of the holding part 9a each have an inclined surface, and when the lead frame 6 is pressed by the holding part 9a, a space 25 is formed between the lead frame 6 and the work clamp 9. It is formed.
- a bonding chip 5 that is a bonding area and an upper opening 11 that exposes the lead frame 6 around the bonding chip 5 are provided.
- the upper opening 11 is for moving the cab 8 on the bonding chip 5 and the lead frame 6 during bonding.
- the upper opening 11 is provided in the lid 23.
- the work clamp 9 has a cavity 13, and the cavity 13 has an internal hollow portion. 10 has an area larger than the opening area of the upper opening 11. That is, the cavity 13 and the internal hollow part 10 are spatially connected, and the area of the planar shape of the cavity has an area larger than the opening area of the upper opening. Further, the cavity 13 is located below the lid portion 23.
- the cavity 13 is provided with gas inlets 14a to 14d (see FIGS. 2, 3, and 4A), and the gas inlets 14a to 14d are provided in the cavity 13 to prevent oxidation.
- This is for introducing inert gas and reducing gas (for example, N gas, N mixed gas, Ar gas).
- gas guide for example, N gas, N mixed gas, Ar gas.
- Each of the inlets 14a to 14d is connected to gas inlets 19a and 19b by tubular gas passages 15a to 15d. That is, gas inlets 19a and 19b are provided at one end of each of the gas paths 15a and 15b, and gas inlets 14a and 14b are provided at the other ends of the gas paths 15a and 15b. Further, as shown in FIG. 4 (A), the gas inlets 14a to 14d are arranged on the most distant side (position as far as possible) from the upper opening. In the present embodiment, the upper opening portion 11 is the center of the work clamp 9, so that the gas introduction port is disposed so as to be biased to one side of the cavity.
- the work clamp 9 has a plurality of holes (or conduits) 21.
- the plurality of holes 21 are connected to the lower side of the cavity 13, and the oxygen-preventing gas introduced from the gas inlets 14 a to 14 d is supplied to portions other than the bonding area of the workpiece (that is, the lead frame around the bonding area). It is for spraying to 6).
- the holes 21 are arranged around the inner space 10 as shown in FIG.
- an antioxidant gas is introduced into the internal hollow portion 10 to prevent oxidation of the bonding wire, the bonding tip 5 and the lead frame 6.
- an antioxidant gas is introduced into the gas passages 15a to 15d from the gas inlets 19a to 19d, the antioxidant gas is introduced into the cavity 13 through the gas inlets 14a to 14d, and the oxidation prevention gas is introduced into the cavity.
- the bonding area force of space 25 is far End force on the side Releases acid-oxidizing gas to the outside.
- the flow rate of the gas released from the upper opening 11 on the bonding area can be reduced.
- the convection velocity of the acid prevention gas at the upper opening 11 can be reduced.
- air entrainment from the upper opening 11 is reduced, so that the oxidation of the bonding area can be suppressed and the upper opening 11 can be enlarged.
- the upper opening 11 exposes the bonding area, it is necessary to provide an opening that matches the size of the bonding area. For this reason, the size of the upper opening 11 cannot be made smaller than the bonding area.
- the reason for providing a plurality of gas inlets is that, if one gas inlet is used, the antioxidant flowing from the gas inlets is secured in order to ensure a sufficient flow rate of the oxidation prevention gas supplied to the cavity. It is necessary to increase the flow rate of the gas, and if the flow rate is high, the air is drawn in from the upper opening. This is because it becomes easy to see and the acidity in the bonding area cannot be sufficiently suppressed.
- a tape-shaped work can be used as a work other than the force using the lead frame 6 on which the bonding chip 5 is placed as a work to be bonded.
- FIG. 4 (B) shows a first modification of the work clamp according to the present embodiment, and is a cross-sectional view of the same part as FIG. 4 (A).
- FIG. 4 (B) the same parts as those in FIG.
- the upper opening 11 is disposed at the center of the work clamp 9. Accordingly, the gas inlets 14 a to 14 d are arranged at the four corners of the cavity 13, which is a position far from the upper opening 11. As a result, the oxidation prevention gas can be distributed substantially evenly throughout the cavity.
- FIG. 4C shows a second modification of the work clamp according to the present embodiment.
- FIG. 4 is a cross-sectional view of the same part as (A).
- FIG. 4C the same parts as those in FIG.
- the opening area of the upper opening 11 is formed larger than that in the above embodiment.
- the upper opening 11 is placed at the center of the work clamp 9. It is.
- the area of the cavity 13 is made larger than that in the above embodiment, thereby reducing the flow rate of the oxidation prevention gas in the bonding area, and the cavity gas inlets 14a to 14d are formed of the upper opening 11. They are placed at the four corners of the cavity 13, which is far away.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Wire Bonding (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/226,348 US7975899B2 (en) | 2006-04-20 | 2007-03-10 | Work clamp and wire bonding apparatus |
| CN2007800140429A CN101427359B (zh) | 2006-04-20 | 2007-04-10 | 工件夹具及引线接合装置 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006-116549 | 2006-04-20 | ||
| JP2006116549A JP4043495B2 (ja) | 2006-04-20 | 2006-04-20 | ワーククランプ及びワイヤボンディング装置 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2007123026A1 true WO2007123026A1 (ja) | 2007-11-01 |
Family
ID=38624932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2007/057901 Ceased WO2007123026A1 (ja) | 2006-04-20 | 2007-04-10 | ワーククランプ及びワイヤボンディング装置 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US7975899B2 (ja) |
| JP (1) | JP4043495B2 (ja) |
| KR (1) | KR101005488B1 (ja) |
| CN (1) | CN101427359B (ja) |
| MY (1) | MY144367A (ja) |
| WO (1) | WO2007123026A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11826861B1 (en) * | 2020-08-12 | 2023-11-28 | Sion Power Corporation | Joining systems, clamping fixtures, and related systems and methods |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5411529B2 (ja) * | 2009-02-27 | 2014-02-12 | セミコンダクター・コンポーネンツ・インダストリーズ・リミテッド・ライアビリティ・カンパニー | 半導体装置の製造方法 |
| JP5411553B2 (ja) * | 2009-03-31 | 2014-02-12 | セミコンダクター・コンポーネンツ・インダストリーズ・リミテッド・ライアビリティ・カンパニー | 半導体装置の製造方法 |
| CN101882562B (zh) * | 2009-05-08 | 2012-02-22 | 日月光封装测试(上海)有限公司 | 半导体封装用导线接合装置及其方法 |
| KR101121849B1 (ko) * | 2010-03-31 | 2012-03-21 | 앰코 테크놀로지 코리아 주식회사 | 와이어 본딩 장치 |
| US8186562B1 (en) * | 2010-12-14 | 2012-05-29 | Asm Technology Singapore Pte Ltd | Apparatus for increasing coverage of shielding gas during wire bonding |
| KR101612012B1 (ko) * | 2012-01-26 | 2016-04-12 | 가부시키가이샤 신가와 | 산화 방지 가스 취출 유닛 |
| JP5804644B2 (ja) * | 2012-02-21 | 2015-11-04 | 超音波工業株式会社 | 超音波ワイヤボンディング装置および超音波ワイヤボンディング方法 |
| JP2014075519A (ja) | 2012-10-05 | 2014-04-24 | Shinkawa Ltd | 酸化防止ガス吹き出しユニット |
| US9521738B1 (en) | 2013-12-23 | 2016-12-13 | Flextronics Ap, Llc | Graphite sheet to protect SMT components from thermal exposure |
| US9149882B1 (en) * | 2014-12-09 | 2015-10-06 | Flextronics Ap, Llc | Thermal carrier |
| WO2017077982A1 (ja) * | 2015-11-05 | 2017-05-11 | 古河電気工業株式会社 | ダイボンディング装置およびダイボンディング方法 |
| TWI677068B (zh) * | 2017-05-24 | 2019-11-11 | 日商新川股份有限公司 | 打線接合裝置 |
| IT202000005020A1 (it) * | 2020-03-09 | 2021-09-09 | Pmp Pro Mec S P A | Pompa idraulica a cilindrata variabile |
| KR102366278B1 (ko) * | 2020-08-05 | 2022-02-23 | 한국전자기술연구원 | 고속 스위칭 전력 변환 장치 |
| EP4299231A1 (de) | 2022-06-29 | 2024-01-03 | Sonplas GmbH | Vorrichtung und verfahren zum beschneiden eines folienartigen werkstücks |
| CN116727961B (zh) * | 2023-03-17 | 2026-01-16 | 杰华特微电子股份有限公司 | 一种焊接夹具及焊接装置 |
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| JP2003037131A (ja) * | 2001-07-25 | 2003-02-07 | Sanyo Electric Co Ltd | ボンディング装置 |
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-
2006
- 2006-04-20 JP JP2006116549A patent/JP4043495B2/ja active Active
-
2007
- 2007-03-10 US US12/226,348 patent/US7975899B2/en not_active Expired - Fee Related
- 2007-04-10 KR KR1020087019612A patent/KR101005488B1/ko not_active Expired - Fee Related
- 2007-04-10 WO PCT/JP2007/057901 patent/WO2007123026A1/ja not_active Ceased
- 2007-04-10 MY MYPI20084155A patent/MY144367A/en unknown
- 2007-04-10 CN CN2007800140429A patent/CN101427359B/zh active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05109793A (ja) * | 1992-01-17 | 1993-04-30 | Shinkawa Ltd | ボンデイング装置用加熱装置 |
| JP2003037131A (ja) * | 2001-07-25 | 2003-02-07 | Sanyo Electric Co Ltd | ボンディング装置 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11826861B1 (en) * | 2020-08-12 | 2023-11-28 | Sion Power Corporation | Joining systems, clamping fixtures, and related systems and methods |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101005488B1 (ko) | 2011-01-04 |
| JP2007288093A (ja) | 2007-11-01 |
| CN101427359B (zh) | 2011-01-19 |
| CN101427359A (zh) | 2009-05-06 |
| US7975899B2 (en) | 2011-07-12 |
| KR20080095249A (ko) | 2008-10-28 |
| JP4043495B2 (ja) | 2008-02-06 |
| US20090134201A1 (en) | 2009-05-28 |
| MY144367A (en) | 2011-09-15 |
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