WO2018159310A1 - 接合体およびその製造方法 - Google Patents

接合体およびその製造方法 Download PDF

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Publication number
WO2018159310A1
WO2018159310A1 PCT/JP2018/005302 JP2018005302W WO2018159310A1 WO 2018159310 A1 WO2018159310 A1 WO 2018159310A1 JP 2018005302 W JP2018005302 W JP 2018005302W WO 2018159310 A1 WO2018159310 A1 WO 2018159310A1
Authority
WO
WIPO (PCT)
Prior art keywords
spacer
metal piece
welded
convex portion
joined body
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
Application number
PCT/JP2018/005302
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
和明 馬渡
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.)
Denso Corp
Original Assignee
Denso Corp
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 Denso Corp filed Critical Denso Corp
Publication of WO2018159310A1 publication Critical patent/WO2018159310A1/ja
Priority to US16/545,116 priority Critical patent/US11027360B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/10—Spot welding; Stitch welding
    • B23K11/11—Spot 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
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/14—Projection 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
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/34—Preliminary treatment
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
    • H01L24/01—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
    • H01L24/02—Bonding areas ; Manufacturing methods related thereto
    • H01L24/03—Manufacturing methods
    • 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

Definitions

  • the present disclosure relates to a joined body and a manufacturing method thereof.
  • resistance welding in which a metal piece is melted by Joule heat generated by passing an electric current through the metal piece, and two metal pieces are joined at the melted portion.
  • joining is performed by concentrating an electric current on the convex part provided in the metal piece and melting the convex part. If the metal pieces are in contact with each other except for the convex portions, the current may be dispersed to cause poor welding, and therefore it is preferable that the metal pieces are separated from each other except for the convex portions.
  • Patent Document 1 proposes a method of suppressing contact between metal pieces other than the convex portions by covering one of the two metal pieces with an insulating material. Specifically, one metal piece protrudes from the connector, a convex portion is formed at the end opposite to the connector, and the portion on the connector side is covered with an insulating material. The other metal piece is arranged so that the end of the one metal piece is covered with the insulating material, and the end of the other metal piece is in contact with the one metal piece. It is suppressed.
  • Patent Document 1 The method described in Patent Document 1 is effective in direct spot welding in which two metal pieces are sandwiched between two electrodes from both sides in the stacking direction. However, since the part on the connector side that does not overlap the other metal piece is covered with an insulating material among the one metal piece, indirect spot welding in which the electrode is brought into contact with each metal piece from one side in the stacking direction is insulated. Energization is hindered by the material. Therefore, the method described in Patent Document 1 cannot be applied to indirect spot welding.
  • the front surface of the first metal piece and the back surface of the second metal piece are joined by a convex portion formed on the surface of the first metal piece.
  • An electrically insulating spacer formed on the surface of the first metal piece, and disposed between the first metal piece and the second metal piece, the first metal piece And the 2nd metal piece is arrange
  • the spacer is disposed between the first metal piece and the second metal piece, contact between the metal pieces other than the convex portions can be suppressed. Further, since the first metal piece is arranged so that the outer portion of the spacer is exposed from the second metal piece, the electrode is formed on the portion of the surface of the first metal piece exposed from the second metal piece. Indirect spot welding can be performed.
  • it is a manufacturing method of the conjugate
  • the spacer is arranged between the first welded member and the second welded member, contact between the welded members other than the convex portions can be suppressed. Further, since the first welded member is arranged so that the outer portion of the spacer is exposed from the second welded member, the first welded member is exposed from the second welded member among the surfaces of the first welded member. It is possible to perform indirect spot welding by bringing the electrode into contact with the portion that has been subjected to the above process.
  • the metal piece 1 is, for example, a connector lead connected to a semiconductor chip, and is made of copper plated with nickel or the like.
  • the metal piece 2 is, for example, a semiconductor chip lead on which a pressure sensor or the like is formed, and is made of nickel, tin, copper plated with gold, or the like.
  • the metal piece 1 is fixed to a resin connector case 3, and the metal piece 2 is joined to the metal piece 1 inside the connector case 3.
  • the metal piece 1 corresponds to a first metal piece and a first welded member
  • the metal piece 2 corresponds to a second metal piece and a second welded member.
  • the connector case 3 has two openings.
  • One opening 31 extends in a direction perpendicular to the surface of the metal piece 1 so that the surface of the metal piece 1 fixed inside the connector case 3 is exposed.
  • a portion of the metal piece 1 exposed by the opening 31 has a rectangular plate shape, and the back surface of the metal piece 1 is supported by the connector case 3.
  • the other opening 32 extends in a direction parallel to the surface of the metal piece 1, and opens on the outer surface of the connector case 3 and the side wall surface of the opening 31.
  • the metal piece 2 is inserted into the opening 31 from the opening 32.
  • the convex part 11 is formed in the part exposed in the opening part 31 among the surfaces of the metal piece 1.
  • the convex portion 11 is a portion where current concentrates and melts by Joule heat during resistance welding, and the metal piece 1 and the metal piece 2 are joined by the convex portion 11.
  • a spacer 4 made of an electrically insulating material is formed on the surface of the metal piece 1.
  • the spacer 4 is used to prevent the metal piece 1 and the metal piece 2 from coming into contact with each other except for the convex portion 11 during resistance welding, and is disposed between the metal piece 1 and the metal piece 2.
  • the spacer 4 is made of, for example, a resin or a ceramic adhesive.
  • the heat-resistant temperature of the spacer 4 is set to be equal to or higher than the temperature around the convex portion 11, specifically the temperature at which the portion of the metal piece 1 where the spacer 4 is formed is reached during resistance welding. Thereby, it is suppressed that the spacer 4 deform
  • the spacer 4 is set to a heat resistant temperature of the spacer 4 equal to or higher than the temperature at which the convex part 11 melts. Can be suppressed.
  • the height of the spacer 4 that is, the width in the thickness direction of the metal piece 1, It is supposed to be below the height.
  • the spacer 4 is formed in a dot shape on the surface of the metal piece 1.
  • Such a spacer 4 is formed by applying the material of the spacer 4 to a circular region on the surface of the metal piece 1 and curing it. The spacer 4 can be lowered by reducing the diameter of this region.
  • illustration of the connector case 3 is abbreviate
  • the diameter of the region where the material is applied and the height of the spacer 4 can be controlled by the viscosity and thixo value of the material of the spacer 4. It is also possible to form the spacer 4 by dividing the material application into a plurality of times and overlapping the layers formed by the material application and curing. Depending on the height of one layer and the number of layers, the spacer 4 can be formed. Can be controlled.
  • the convex portion 11 and the spacer 4 are arranged in the longitudinal direction of the portion of the metal piece 1 exposed from the opening 31.
  • the metal piece 2 has a rectangular plate shape in the connector case 3 where the metal piece 1 is joined to the metal piece 1, and the longitudinal direction of the metal piece 2 coincides with the longitudinal direction of the metal piece 1.
  • the metal piece 1 and the metal piece 2 are arranged so as to face each other with the spacer 4 interposed therebetween, and the back surface of the metal piece 2 is joined to the convex portion 11.
  • the entire spacer 4 is disposed between the metal piece 1 and the metal piece 2, but the region where the spacer 4 is formed is a sub-electrode 6 described later on the surface of the metal piece 1. As long as it is outside the portion that contacts, a part of the spacer 4 may be exposed from the metal piece 2.
  • the convex portion 11 is formed on the surface of the metal piece 1 by pressing.
  • the spacer 4 is formed by applying an insulating resin in a dot shape on the surface of the metal piece 1 on the outer side of the convex portion 11 using a jet dispenser or the like.
  • the spacer 4 is formed so that the height Ta of the spacer 4 is equal to or less than the height Tb of the convex portion 11 after being melted in the step shown in FIG. 3D described later.
  • the connector case 3 is formed by insert molding, and the metal piece 1 is fixed to the connector case 3.
  • the spacer 4 may be formed by applying a resin to the surface of the metal piece 1 inside the opening 31.
  • the metal piece 2 is inserted into the opening 32 from the outside of the connector case 3, and the metal piece 1 and the metal piece 2 are arranged to overlap each other.
  • the back surface of the metal piece 2 comes into contact with the convex portion 11, the spacer 4 is disposed between the metal piece 1 and the metal piece 2, and the portion of the surface of the metal piece 1 outside the spacer 4 is the metal piece 2.
  • positions so that a part of the longitudinal direction in which the convex part 11 and the spacer 4 were formed among the metal pieces 1 and the edge part of the longitudinal direction of the metal piece 2 may mutually oppose. Thereby, the other part of the longitudinal direction of the metal piece 1 is exposed from the metal piece 2.
  • the surface of the metal piece 1 and the back surface of the metal piece 2 are welded using indirect spot welding.
  • the main electrode 5 is brought into contact with the surface of the metal piece 2, that is, the surface of the metal piece 2 opposite to the metal piece 1.
  • the sub electrode 6 is brought into contact with the portion of the surface of the metal piece 1 exposed from the metal piece 2 and the connector case 3 inside the opening 31.
  • a voltage is applied to the main electrode 5 and the sub electrode 6, and a current flows through the metal piece 1 and the metal piece 2.
  • the current concentrates on the convex portion 11, so that the convex portion 11 is melted by Joule heat, and the metal piece 1 and the metal piece 2 are joined by the molten convex portion 11.
  • the spacer 4 is formed so that Ta ⁇ Tb in the step shown in FIG. 3B, it is possible to prevent the spacer 4 from hindering the joining of the metal piece 1 and the metal piece 2 via the convex portion 11. Is done.
  • the spacer 4 is disposed between the metal piece 1 and the metal piece 2, contact between the metal piece 1 and the metal piece 2 other than the convex portion 11 can be suppressed. Thereby, the welding failure by dispersion
  • the surface of the main electrode 5 that contacts the metal piece 2 can be enlarged, and deformation of the main electrode 5 due to pressurization and heat generation due to current concentration on the main electrode 5 can be suppressed.
  • the spacer 4 is formed on the metal piece 2, the metal piece 2 on which the spacer 4 is formed is passed through the opening 32 of the connector case 3, so that the width of the opening 32 is increased in accordance with the spacer 4. There is a need.
  • the spacer 4 is formed on the surface of the metal piece 1 arranged inside the connector case 3, it is not necessary to increase the width of the opening 32, and the degree of freedom in design. Is expensive.
  • spacers 4 are formed on both sides of the convex portion 11 in the in-plane direction of the surface of the metal piece 1, specifically, in the longitudinal direction of the metal piece 1.
  • the spacers 4 are arranged on both sides of the convex portion 11, even when the surface of the main electrode 5 that contacts the metal piece 2 is large, the metal piece 2 can be stably provided in the vicinity of the convex portion 11. A load can be applied.
  • the spacer 4 is disposed so as to surround the convex portion 11 on the surface of the metal piece 1, and a part of the side surface of the convex portion 11 is covered with the spacer 4.
  • the spacer 4 is formed in a dot shape, but the spacer 4 may be formed in a straight line perpendicular to the longitudinal direction of the metal piece 1 as shown in FIG.
  • the present disclosure may be applied to direct spot welding. That is, the connector case 3 is formed so that the back surface of the metal piece 1 is exposed from the connector case 3, and the main electrode 5 and the sub electrode 6 are brought into contact with the front surface of the metal piece 2 and the back surface of the metal piece 1, respectively. Resistance welding may be performed in a state where 11 is pressed from both sides in the thickness direction of the metal piece 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Resistance Welding (AREA)
PCT/JP2018/005302 2017-03-03 2018-02-15 接合体およびその製造方法 Ceased WO2018159310A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US16/545,116 US11027360B2 (en) 2017-03-03 2019-08-20 Bonded body and method for manufacturing the same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017040671A JP2018144068A (ja) 2017-03-03 2017-03-03 接合体およびその製造方法
JP2017-040671 2017-03-03

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US16/545,116 Continuation US11027360B2 (en) 2017-03-03 2019-08-20 Bonded body and method for manufacturing the same

Publications (1)

Publication Number Publication Date
WO2018159310A1 true WO2018159310A1 (ja) 2018-09-07

Family

ID=63370806

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/005302 Ceased WO2018159310A1 (ja) 2017-03-03 2018-02-15 接合体およびその製造方法

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Country Link
US (1) US11027360B2 (enExample)
JP (1) JP2018144068A (enExample)
WO (1) WO2018159310A1 (enExample)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190061035A1 (en) * 2017-08-25 2019-02-28 Pratt & Whitney Canada Corp. System and method for joining components
JP7202179B2 (ja) * 2018-12-26 2023-01-11 日産自動車株式会社 複合体

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009032640A (ja) * 2007-06-27 2009-02-12 Sanyo Electric Co Ltd 密閉電池及びその製造方法
JP2014032814A (ja) * 2012-08-02 2014-02-20 Toyota Industries Corp 蓄電装置及び二次電池

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0542374A (ja) * 1991-08-08 1993-02-23 Oki Electric Ind Co Ltd 樹脂コート鋼板の抵抗溶接法
JP5612348B2 (ja) * 2010-04-01 2014-10-22 日立オートモティブシステムズ株式会社 抵抗溶接構造及び抵抗溶接方法並びに被溶接部材及びその製造方法
JP2015213938A (ja) 2014-05-09 2015-12-03 株式会社デンソー 抵抗溶接法
WO2018116785A1 (ja) 2016-12-20 2018-06-28 株式会社デンソー 半導体装置およびその製造方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009032640A (ja) * 2007-06-27 2009-02-12 Sanyo Electric Co Ltd 密閉電池及びその製造方法
JP2014032814A (ja) * 2012-08-02 2014-02-20 Toyota Industries Corp 蓄電装置及び二次電池

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Publication number Publication date
US20190375040A1 (en) 2019-12-12
US11027360B2 (en) 2021-06-08
JP2018144068A (ja) 2018-09-20

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