CN1303854C - Method and device for mounting semiconductor chip - Google Patents

Method and device for mounting semiconductor chip Download PDF

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Publication number
CN1303854C
CN1303854C CNB2004100018800A CN200410001880A CN1303854C CN 1303854 C CN1303854 C CN 1303854C CN B2004100018800 A CNB2004100018800 A CN B2004100018800A CN 200410001880 A CN200410001880 A CN 200410001880A CN 1303854 C CN1303854 C CN 1303854C
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CN
China
Prior art keywords
chip
magnetic head
soldering appliance
semiconductor chip
adhesive
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Expired - Fee Related
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CNB2004100018800A
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Chinese (zh)
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CN1535105A (en
Inventor
马场俊二
山上高丰
海沼则夫
小八重健二
吉良秀彦
小林弘
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Fujitsu Ltd
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Fujitsu Ltd
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Priority claimed from JP2000124878A external-priority patent/JP2001308145A/en
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Publication of CN1303854C publication Critical patent/CN1303854C/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/28—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
    • 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
    • H01L24/74—Apparatus for manufacturing arrangements for connecting or disconnecting semiconductor or solid-state bodies
    • H01L24/75—Apparatus for connecting with bump connectors or layer connectors
    • 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
    • H01L24/80—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected
    • H01L24/83—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected using a layer connector
    • 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
    • H01L2224/10—Bump connectors; Manufacturing methods related thereto
    • H01L2224/15—Structure, shape, material or disposition of the bump connectors after the connecting process
    • H01L2224/16—Structure, shape, material or disposition of the bump connectors after the connecting process of an individual bump connector
    • H01L2224/161—Disposition
    • H01L2224/16151—Disposition the bump connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
    • H01L2224/16221—Disposition the bump connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
    • H01L2224/16225—Disposition the bump connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being non-metallic, e.g. insulating substrate with or without metallisation
    • 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
    • H01L2224/26—Layer connectors, e.g. plate connectors, solder or adhesive layers; Manufacturing methods related thereto
    • H01L2224/31—Structure, shape, material or disposition of the layer connectors after the connecting process
    • H01L2224/32—Structure, shape, material or disposition of the layer connectors after the connecting process of an individual layer connector
    • H01L2224/321—Disposition
    • H01L2224/32151—Disposition the layer connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
    • H01L2224/32221—Disposition the layer connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
    • H01L2224/32225—Disposition the layer connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being non-metallic, e.g. insulating substrate with or without metallisation
    • 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
    • H01L2224/73—Means for bonding being of different types provided for in two or more of groups H01L2224/10, H01L2224/18, H01L2224/26, H01L2224/34, H01L2224/42, H01L2224/50, H01L2224/63, H01L2224/71
    • H01L2224/732—Location after the connecting process
    • H01L2224/73201—Location after the connecting process on the same surface
    • H01L2224/73203—Bump and layer connectors
    • H01L2224/73204—Bump and layer connectors the bump connector being embedded into the layer connector
    • 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
    • H01L2224/80—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected
    • H01L2224/81—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected using a bump connector
    • H01L2224/8138—Bonding interfaces outside the semiconductor or solid-state body
    • H01L2224/81399—Material
    • H01L2224/814—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
    • H01L2224/81438—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
    • H01L2224/81444—Gold [Au] as principal constituent
    • 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
    • H01L2224/80—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected
    • H01L2224/83—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected using a layer connector
    • H01L2224/8319—Arrangement of the layer connectors prior to mounting
    • H01L2224/83192—Arrangement of the layer connectors prior to mounting wherein the layer connectors are disposed only on another item or body to be connected to the semiconductor or solid-state body
    • 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
    • H01L2224/80—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected
    • H01L2224/83—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected using a layer connector
    • H01L2224/838—Bonding techniques
    • H01L2224/8385—Bonding techniques using a polymer adhesive, e.g. an adhesive based on silicone, epoxy, polyimide, polyester
    • H01L2224/83855—Hardening the adhesive by curing, i.e. thermosetting
    • H01L2224/83874—Ultraviolet [UV] curing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/01—Chemical elements
    • H01L2924/01029—Copper [Cu]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/01—Chemical elements
    • H01L2924/01079—Gold [Au]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/06—Polymers
    • H01L2924/078—Adhesive characteristics other than chemical
    • H01L2924/07802—Adhesive characteristics other than chemical not being an ohmic electrical conductor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/10—Details of semiconductor or other solid state devices to be connected
    • H01L2924/11—Device type
    • H01L2924/14—Integrated circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
    • H01L2924/151—Die mounting substrate
    • H01L2924/153—Connection portion
    • H01L2924/1531—Connection portion the connection portion being formed only on the surface of the substrate opposite to the die mounting surface
    • H01L2924/15311—Connection portion the connection portion being formed only on the surface of the substrate opposite to the die mounting surface being a ball array, e.g. BGA

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  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Connection Of Electric Components To Printed Circuits (AREA)
  • Wire Bonding (AREA)

Abstract

A method of mounting a semiconductor chip in which an IC chip is mounted by filling a gap between the chip and a substrate with adhesive which functions as an underfill. The fillet of the underfill is made to have a preferable shape. To accomplish this, a head IC chip provided with bumps is placed on a suspension that is covered with the underfill adhesive and is provided with pads. A bonding tool presses the head IC chip and applies ultrasonic oscillation to the head IC chip, so that the bumps are properly bonded to the pads. When the head IC chip is pressed and subjected to ultrasonic oscillation, the ultraviolet rays 108 are emitted so as to harden the peripheral portion 151a of the adhesive 151 spread out between the head IC chip 11 and the suspension 12.

Description

The method and apparatus of semiconductor chip is installed
The application be submitted on August 4th, 2000, application number is 00122531.6, denomination of invention is divided an application for the application for a patent for invention of " method of semiconductor chip is installed ".
Technical field
The present invention relates generally to the method that semiconductor chip is installed, the device of semiconductor chip is installed, and the substrate that is used to install semiconductor chip.
Background technology
The method that semiconductor chip is installed is applicable to that the magnetic head IC chip 11 with hard disk unit 10 is installed on the hanging stick (suspension) 12, shown in Figure 1A and 1B, or the IC chip 31 of printed circuit board unit 30 is installed on the substrate 32, as Fig. 3 A to shown in the 3C.
Shown in Figure 1A and 1B, hard disk unit 10 has a hard disk 16 in the shell 15 high speeds rotation of sealing airtightly, and head slider assembly 19 is fixed to the top of arm 18.Head slider assembly 19 comprises head slider 20 and the magnetic head IC chip 11 that is installed on the hanging stick 12, as shown in Figure 2.Head slider 20 has one and forms the magnetic head 21 that technology forms by film.Magnetic head IC chip 11 is by for example amplifying the weak signal that read by magnetic head 21 and control head 21.Shown in the enlarged drawing of Fig. 2, magnetic head IC chip 11 lower surfaces at it have the prominent point (Au bump) 22 of gold to be welded on the gold solder dish 24 of wiring figure 23 edges.
Printed circuit board unit 30 comprises multi-chip module 36, memory plug 38 and the I/O connector 39 that provides heat sink, and all these is installed on the motherboard 35, as shown in Figure 3A.Multi-chip module 36 has a plurality of IC chips 31 that are installed on the substrate 32, shown in Fig. 3 B.Magnetic head IC chip 31 lower surfaces at it have the prominent point 42 of gold to be welded on the gold solder dish 43 that is formed on the substrate 32.Magnetic head IC chip 31 is welded on the substrate 32 by end filler (underfill) 44.
Fig. 4 A represents the manufacture method of conventional head slider assembly to 4C.Lower surface at magnetic head IC chip 11 has the prominent point 51 of gold.Upper surface at hanging stick 12 has gold solder dish 61.Described head slider assembly is made in the following manner.
At first, hanging stick 12 is fixed on the workbench 70.Use accurate distributor (not shown) then, will be coated to the upper surface of hanging stick 12 as the scheduled volume insulating binder 71 of " end filler ".Magnetic head IC chip 11 is picked up by the vacuum suction of the instrument 75 with suction hole 76, and moves on on the hanging stick 12.Then instrument 75 firmly F push magnetic head IC chip 11, the ultrasonic vibration of several microns amplitudes is applied to more than 11 seconds of magnetic head IC chip, as shown by arrow B.Thus, the prominent point 51 of gold is welded on the gold solder dish 61.Stop the vacuum suction of instrument 75 then, instrument 75 separates with magnetic head IC chip 11 thus.Afterwards hanging stick 12 is moved on to heating furnace 80, so that by the adhesive 71 that is heating and curing.Here, form end filler 72, and magnetic head IC chip 11 is welded on the hanging stick 12 by end filler 72.Thus, finished head slider assembly 19.
The manufacture method of the head slider assembly 19 of above routine demonstrates following deficiency at least:
1. the shape instability of the outline line of end filler.
Adhesive 71 as end filler is circular on hanging stick 12, shown in the double dot dash line among Fig. 5 A.When instrument 75 was pushed magnetic head IC chip 11, adhesive 71 was pushed by the lower surface of magnetic head IC chip 11, and expansion radially.The adhesive 71 of expansion extend to magnetic head IC chip 11 lower surfaces around, and form outline line 90.By the shape of determining outline line 90 as the extended mode of the adhesive 71 of end filler.The extended mode of adhesive 71 is with the applied amount of adhesive 71 and apply the position and change.According to circumstances, adhesive 71 meetings significantly overflow on the upper surface of hanging stick 12 is shown in the reference number among Fig. 5 A and the 5B 91.
Along with hard disk unit diminishes, the width W 1 of hanging stick 12 also diminishes.On the other hand, along with adding more function, it is big that magnetic head IC chip 11 becomes on the direction of the L1 shown in Fig. 5 A.Therefore, extra section 92 width W 2 of the outside of the magnetic head IC chip of installing on the hanging stick 12 11 diminish.In addition, a large amount of overflow of adhesive has adverse effect for head slider 20 with respect to the floating property of hard disk.
To the multi-chip module shown in the 3B 36, a large amount of overflows of adhesive often hinder the installation of other parts on substrate 32 upper surfaces for Fig. 3 A.
2. the adhesive of overflow adheres on the instrument 75
According to the applied amount of adhesive 71 with apply the position, adhesive 71 overflows to the upper surface of magnetic head IC chip 11, and adheres to the top of instrument 75, shown in the reference number among Fig. 6 A and the 6B 93.
When adhesive 71 adhered to the top of instrument 75, the attraction of instrument 75 operation became instability.Therefore, the top of instrument 75 needs often cleaning.Yet when finishing the installation of a magnetic head IC chip 11, the top of cleaning tool 75 is pretty troublesome at every turn.
When viewed from above, the adhesive 71 that applies is circular and radial extension.Therefore adhesive 71 overflows from the side of magnetic head IC chip 11, and extends to the upper surface of magnetic head IC chip 11.
3. very low to the ultrasound conductivity of magnetic head IC chip 11 by instrument 75.
Shown in Fig. 4 B, instrument 75 directly contacts with magnetic head IC chip 11.Instrument 75 is made by stainless steel, and magnetic head IC chip 11 is made by silicon.Coefficientoffriction 1 between instrument 75 and the IC chip 11 is in 0.5 to 0.7 scope, and is lower.Therefore, very low by instrument 75 to the ultrasound conductivity of magnetic head IC chip 11, and 51 welding to gold solder dish 61 of the prominent point of gold need long time.
4. magnetic head IC chip often departs from when installing, and departs to cause defectiveness to be installed.
Shown in Fig. 4 B, instrument 75 and magnetic head IC chip 11 directly are in contact with one another.Because the slight orientation of the end face 75 of instrument 75, during each instrument 75 sonic oscillations, along a direction (for example along the X1 direction) of sonic oscillation, magnetic head IC chip 11 departs from a little with the initial position shown in Fig. 7 A.According to circumstances, the prominent point 51 of gold may break away from gold solder dish 61, shown in Fig. 7 B, causes defective welding.
In the multi-chip module shown in the 3C 36, each is rectangle in the pad that forms on substrate 32, shown in the reference number 43A among Fig. 8 at Fig. 3 A.Yet, the Width that vertically equals vertically aligned pad 43A among Fig. 8 of the pad 43A of horizontal aligument among Fig. 8.Therefore, when instrument 75 sonic oscillations, the pad on the substrate 32 can not always prevent effectively that magnetic head IC chip 11 from departing from.
Summary of the invention
Given this, the present invention is devoted to provide a kind of installation method and device of semiconductor chip, has wherein eliminated above problem.
For overcoming the above problems, the invention provides a kind of method that semiconductor chip is installed, may further comprise the steps:
By pushing semiconductor chip, the prominent spot welding that is formed on the semiconductor chip is received on the pad that forms on the substrate, utilize insulating binder to place between semiconductor chip and the substrate; And
Be hardened in the insulating binder that expands between semiconductor chip and the substrate,
Wherein welding step comprises the step of the peripheral part of the insulating binder that expands between sclerosis semiconductor chip and the substrate.
When pushing semiconductor chip,, therefore can prevent a large amount of insulating binder overflows between semiconductor chip and substrate because the peripheral part of insulating binder is expanded away.The outline line of end filler can form desirable shape thus.
According to above method, welding step comprises that also applying sonic oscillation to semiconductor chip receives on the pad that forms on the substrate with the prominent spot welding that will be formed on the semiconductor chip.
Because therefore not overflow in a large number of insulating binder can prevent that insulating binder from entering the attaching space between soldering appliance and the semiconductor chip.Can keep preferred contact conditions thus.
According to above method, by the peripheral part of light or hot curing insulating binder.
Adopt light or heating, can be fast and stably be solidificated in the peripheral part of the insulating binder of expanding between semiconductor chip and the substrate.
The present invention also provides a kind of semiconductor core piece mounting device, it comprises the mechanism of pushing semiconductor chip, simultaneously insulating binder places the semiconductor chip that providing prominent point and provides between the substrate of pad, and receives on the pad and semiconductor chip is installed on the substrate by the spot welding of will dashing forward
This device also comprises the peripheral part hardening unit, when pushing semiconductor chip, and the peripheral part of the insulating binder that its sclerosis is exposed by the periphery of semiconductor chip.
Because the peripheral part of insulating binder is expanded between semiconductor chip and substrate when pushing semiconductor chip, so insulating binder can prevent a large amount of overflows.The outline line of end filler can form desirable shape thus.
Above semiconductor core piece mounting device also comprises the ultrasonic oscillator that be ultrasonically welded on the pad at prominent.
Because therefore not overflow in a large number of insulating binder can prevent that insulating binder from entering the soldering appliance of transmission sonic oscillation and the attaching space between the semiconductor chip.Can keep the contact conditions of wishing thus.
In above semiconductor core piece mounting device, the peripheral part hardening unit provides the unit for light provides unit or heat.
Adopt light to provide unit or heat that the unit is provided, can be fast and stably be solidificated in the peripheral part of the insulating binder of expanding between semiconductor chip and the substrate.
The present invention also provides a kind of semiconductor core piece mounting device, it comprises the soldering appliance of pushing semiconductor chip, insulating binder places the semiconductor chip that provides prominent point and provides between the substrate of pad simultaneously, and will dash forward and a little be ultrasonically welded on the pad, wherein this soldering appliance is square bar shape substantially, and its side curves inwardly with respect to the flat surfaces of imagination (virtual) between the adjacent corners of soldering appliance.
Push and sonic oscillation when being applied to semiconductor chip when soldering appliance, insulating binder is from the side of semiconductor chip, rather than overflow at the turning of semiconductor chip.Soldering appliance is square bar shape substantially, and imaginary flat surfaces curves inwardly between the adjacent corners of the side of soldering appliance with respect to soldering appliance.In described structure, the insulating binder of overflow does not extend and clings soldering appliance.Therefore, do not need to clear up soldering appliance.In addition, because soldering appliance is square bar shape substantially, so soldering appliance can be pushed the whole semiconductor chip that comprises the turning equably.Thus, can in semiconductor chip, not chap.
The present invention also provides a kind of semiconductor chip is installed in installation method on the substrate, push semiconductor chip by soldering appliance, simultaneously insulating binder is placed the semiconductor chip that providing prominent point and provide between the substrate of pad, and will dash forward and a little be ultrasonically welded on the pad, wherein place between semiconductor chip and the soldering appliance for the coefficient of friction of semiconductor chip and the soldering appliance thin slice bigger, carry out ultra-sonic welded thus than the coefficient of friction between semiconductor chip and the soldering appliance with one.
Owing to place the thin slice between semiconductor chip and the soldering appliance bigger than the coefficient of friction between semiconductor chip and the soldering appliance for the coefficient of friction of semiconductor chip and soldering appliance, therefore can carry out expeditiously, and the prominent spot welding that will be formed on the semiconductor chip is received on the pad that is formed on the substrate and can be finished in short cycle by the power transfer of soldering appliance to semiconductor chip.In addition, depart from that the position of semiconductor chip is rare.
The present invention also provides a kind of semiconductor core piece mounting device, comprises the soldering appliance of pushing semiconductor chip, and simultaneously insulating binder places the semiconductor chip that providing prominent point and provides between the substrate of pad, and will dash forward and a little be ultrasonically welded on the pad; And the device that is used between semiconductor chip and soldering appliance moving and placing thin slice, this thin slice is bigger than the coefficient of friction between semiconductor chip and the soldering appliance to the two coefficient of friction of semiconductor chip and soldering appliance.
Because the coefficient of friction between soldering appliance and thin slice and thin slice and the semiconductor chip is all greater than the coefficient of friction between soldering appliance and the semiconductor chip, therefore by between semiconductor chip and soldering appliance, placing thin slice, can carry out effectively by the power transfer of soldering appliance to semiconductor chip.Therefore, receive the pad that is formed on the substrate and can in short cycle, finish being formed on prominent spot welding on the semiconductor chip.In addition, depart from that the position of semiconductor chip is rare.
The present invention also provides a kind of substrate that semiconductor chip is installed on it by ultra-sonic welded, and its each included pad has the shape of elongating along the direction that is applied to the sonic oscillation on the semiconductor chip.
When soldering appliance when semiconductor chip applies sonic oscillation, because the orientation of soldering appliance makes semiconductor chip be tending towards mobile.Yet in above structure, the prominent point that is formed on the semiconductor chip can not leave each pad that has along the shape of the direction elongation that is applied to the sonic oscillation on the semiconductor chip.Can prevent the defectiveness welding between semiconductor chip and the substrate thus.
Description of drawings
Figure 1A and 1B represent conventional hard disk unit;
Fig. 2 is illustrated in the magnetic head slide assemblies in the hard disk unit of Figure 1A and 1B;
Fig. 3 A and 3C represent conventional printed circuit board unit;
Fig. 4 A and 4C represent to make the method for conventional semiconductor chip;
Fig. 5 A and Fig. 5 B represent first problem that prior art exists;
Fig. 6 A and 6B represent second problem that prior art exists;
Fig. 7 A and 7B represent the 4th problem that prior art exists;
Fig. 8 represents the rectangular pads of prior art;
Fig. 9 A and 9B represent the magnetic head IC chip erecting device of first embodiment of the invention;
Figure 10 is the plane graph of the layout of ultra-violet lamp shown in Fig. 9 A and the 9B;
Figure 11 is the flow chart of the manufacturing process of magnetic head slide assemblies;
Figure 12 A is the time sequential routine figure of the chip erecting device of Fig. 9 A and 9B to 12D;
Figure 13 represents the positioning step in the flow process of Figure 11;
Figure 14 represents the step with ultraviolet irradiation of pushing in the flow process of Figure 11;
Figure 15 represents pushing in the flow process of Figure 11, sonic oscillation and ultraviolet irradiation step;
Figure 16 represents to push, the situation after sonic oscillation and the ultraviolet irradiation step;
Figure 17 A and 17B represent the part of the magnetic head slide assemblies finished by operation shown in Figure 11;
Figure 18 A and 18B represent the chip erecting device of second embodiment of the invention;
Figure 19 A and 19B represent the chip erecting device of third embodiment of the invention;
The top of soldering appliance shown in Figure 20 presentation graphs 19A and the 19B;
Figure 21 represents first kind of remodeling of Figure 20 soldering appliance;
Figure 22 represents second kind of remodeling of Figure 20 soldering appliance;
Figure 23 A and 23B represent the chip erecting device of fourth embodiment of the invention;
Polyimide film supporting mechanism shown in Figure 24 presentation graphs 23A and the 23B;
Figure 25 is the method flow diagram of the magnetic head slide assemblies of the chip erecting device shop drawings 2 of use Figure 23 A and 23B;
Figure 26 A is the sequential chart of operation of the chip erecting device of Figure 23 A and 23B to 26F;
Figure 27 represents the operation chips positioning step situation afterwards of Figure 25;
Figure 28 represents the interim placement step in the operation of Figure 25;
Figure 29 represents the soldering appliance lifting step in the operation of Figure 25;
Figure 30 represents the polyimide film inserting step in the operation of Figure 25;
Figure 31 represents to push and the sonic oscillation step in the operation of Figure 25;
Figure 32 represents that soldering appliance in the operation of Figure 25 promotes and the withdrawal step of polyimide film supporting mechanism;
Figure 33 A and 33B represent that polyimide film is presented step in the operation of Figure 25;
Figure 34 A represents the magnetic head slide assemblies of fifth embodiment of the invention to 34D;
The manufacturing process of Figure 35 A to 35H presentation graphs 34A to the dish of gold solder shown in the 34D;
Figure 36 A represents from the manufacturing process of Figure 35 H continuation to 36F; And
Figure 37 A and 37B represent the magnetic head slide assemblies of sixth embodiment of the invention.
Embodiment
First embodiment has solved the insecure problem of shape of the outline line of end filler.
Fig. 9 A and 9B represent the magnetic head IC chip erecting device 100 as first embodiment of the invention.Magnetic head IC chip erecting device 100 comprises workbench 101, welding unit 110 and control unit 130.
Workbench 101 holds hanging stick shown in Figure 2 12, and provides that suction hole 102 is used for attracting and traction hanging stick 12.On workbench 101, also have four ultra-violet lamps 104 to 107 to be looped around around the chip installation site 109, towards four sides of the magnetic head IC chip 11 that is mounted, so that with whole four sides of ultraviolet irradiation magnetic head IC chip 11.
The soldering appliance 112 that welding unit 110 comprises plumb joint 111, hang down from plumb joint 111 and form the ultrasonator 113 of one with soldering appliance 112.Soldering appliance 112 moves up and down by the elevating mechanism (not shown).Welding unit 110 is supported movably by the framework 103 of magnetic head IC chip erecting device 100, and can move by travel mechanism's (not shown).
Plumb joint 111 comprises load cell (pressing mechanism) 114 and the valve 115 that is connected on power supply or the vacuum source (not shown).Load cell 114 moves up and down soldering appliance 112, and measures by soldering appliance 112 and be applied to power on the magnetic head IC chip 50.
Soldering appliance 112 provides the suction hole 116 that communicates with valve 115.Ultrasonator 113 provides sonic oscillation to soldering appliance 112.
Control unit 130 comprises the controller 131 of controlling ultrasonator 113, the controller 132 of control load transducer 114, the controller 133 of control valve 115 and the controller 134 of control ultra-violet lamp 104 to 107.Control unit 130 also comprises the general controller 135 of controlling all controllers 130 to 134.
With reference now to Figure 11,, introduces the method for the head slider assembly 19 that uses above magnetic head IC chip erecting device 100 shop drawings 2 below.
Make head slider assembly 19 by carrying out step 140 to 147 shown in Figure 11.Among step 140 to 147, carry out step 144 to 146 to the magnetic head of operation shown in 12D IC chip erecting device 100 by Figure 12 A.
Step 140
Use lead wire connecting apparatus that the prominent point 51 of gold is formed on the lower surface of magnetic head IC chip 11.
Step 141,142 and 143
Gold solder dish 61 is formed on the hanging stick 12, is applied to the center of chip installation site 109 as the adhesive 150 of end filler.Gold solder dish 61 and adhesive 150 face up, and hanging stick 12 is placed on the workbench 101, and are adsorbed on the workbench 101.
Adhesive 150 is made up of the mixture of resinoid and ultraviolet curing agent.Specifically, as main component, the styrax alkyl ether is as the light trigger that is used for polymerization by the urethanes acrylate for adhesive 150, and acrylates is as the thermosetting initator.
Positioning step 144 (referring to Figure 13 and 12A)
Welding unit 110 is positioned at the position of aiming at magnetic head IC chip 11.Move down soldering appliance 112 by the elevating mechanism (not shown).Shown in Figure 12 A, open valve 115 according to the control signal that transmits by controller 133.Magnetic head IC of top vacsorb chip 11 by soldering appliance 112.Soldering appliance 112 moves up to promote magnetic head IC chip 11 then.Then, move welding unit 110 to transport magnetic head IC chip 11 by travel mechanism's (not shown) along framework 103.Welding unit 110 stops at the position that magnetic head IC chip 11 is arranged on the hanging stick 12 then, as shown in figure 13.
Push and ultraviolet irradiation step 145 (Figure 14,12B and 12C)
Along with the startup of elevating mechanism (not shown), the control signal work that load cell 114 transmits according to controller 132 is shown in Figure 12 C.Soldering appliance 112 moves down with predetermined power F and pushes magnetic head IC chip 11 then, thus the prominent point 51 of gold is pressed to gold solder dish 61.Magnetic head IC chip 11 is also by power F expansion adhesive 150.Here, adhesive 150 is extended to the degree that the edge of adhesive 150 overflows magnetic head IC chip 11 edges.In Figure 14, reference number 151 expression adhesives expand to magnetic head IC chip 11 on hanging stick 12.
When load cell 114 began 11 pressurizations of magnetic head IC chip, ultra-violet lamp 104 to 107 was lighted according to the control signal that controller 134 transmits.Zone around the magnetic head IC chip 11 is by ultraviolet ray 108 irradiations, and a part of 151a that exposes the adhesive 151 at magnetic head IC chip 11 edges begins sclerosis.Therefore, the adhesive 151 of expansion partly hardens.In Figure 14, the part of reference number 152 expression sclerosis.
According to above mode, a part of 151a that exposes the adhesive 151 at magnetic head IC chip 11 edges is hardened, and forms hard film thus at exposed portions serve 151a place.Therefore, when magnetic head IC chip 11 is pressed to hanging stick 12, can prevent that adhesive 151 from flowing out hanging stick 12.
Ultraviolet ray 108 can not arrive the bottom of magnetic head IC chip 11.Therefore, this moment, magnetic head IC chip 11 following that part of adhesives 151 can not harden.Thus, when pushing magnetic head IC chip 11, adhesive 150 can be expanded smoothly, and the prominent point 51 of gold can be pressed to gold solder dish 61 exactly.
Push, sonic oscillation and ultraviolet irradiation step 146 (referring to Figure 15,16,12A, 12B, 12C and 12D)
As Figure 12 A, shown in 12B and the 12C, ultra-violet lamp 104 to 107 is lighted, soldering appliance 112 vacsorb magnetic head IC chips 11, and load cell 114 is pushed magnetic head IC chip 11.Under this condition, the control signal starting oscillation that ultrasonator 113 transmits according to controller 131, and keep several seconds of vibrating.
Figure 15 represents above situation.When ultrasonator 113 vibrations, soldering appliance 112 is by sonic oscillation shown in the arrow B.The sonic oscillation of soldering appliance 112 is sent to the prominent point 51 of gold of magnetic head IC chip 11,51 pairs of gold solder dish 61 sonic oscillations of the prominent point of gold.Thus, the prominent point 51 of gold is soldered on the gold solder dish 61.
The a part of 151a that exposes the adhesive 151 at magnetic head IC chip 11 edges further hardens.In Figure 15, reference number 153 expressions are the part of sclerosis further.Hardened owing to expose the part 151a at magnetic head IC chip 11 edges, therefore when magnetic head IC chip 11 sonic oscillations, can be prevented that adhesive 151 from flowing out hanging stick 12.In addition, can prevent that adhesive 151 from entering the contact portion between soldering appliance 112 and the magnetic head IC chip 11.Thus, between soldering appliance 112 and magnetic head IC chip 11, can keep the contact conditions of wishing.
Ultraviolet ray 108 can not arrive the bottom of magnetic head IC chip 11.Therefore, this moment, magnetic head IC chip 11 following that part of adhesives 151 did not harden.The prominent point 51 of gold can correctly be pressed to gold solder dish 61.Thus, between prominent point 51 of gold and gold solder dish 61, can keep the welding condition of wishing
Figure 16 represents to push, the situation after sonic oscillation and the ultraviolet irradiation step 146.Ultra-violet lamp 104 to 107 is closed, and the prominent point 51 of gold is soldered on the gold solder dish 61.Only there is the part 151a sclerosis of exposing magnetic head IC chip 11 edges in little space 152 between the lower surface of adhesive 151 filling magnetic head IC chips 11 and the upper surface of hanging stick 12.
Heating steps 147
From chip erecting device 100, take out the hanging stick 12 that is welded with magnetic head IC chip 11.Then hanging stick 12 is placed in the heating furnace with heat curing adhesive 151.At this moment, whole adhesive 151 is hardened fully and is formed end filler 155.
By above step, finished the head slider assembly 19A shown in Figure 17 A and the 17B.Be formed on the prominent point of the gold 51 gold solder dishes 61 that are soldered on the hanging stick 12 of magnetic head IC chip 11 lower surfaces.Magnetic head IC chip 11 also is welded on the hanging stick by end filler 155, and end filler 155 is formed by ultraviolet curing and resinoid 150 sclerosis.End filler 155 is at its whole peripheral part outline line 156 likely.Owing at first apply adhesive 150, so end filler 155 has high-quality and does not have the space.
The second embodiment of the present invention is the remodeling of first embodiment, has solved the problem of the outline line change of shape of end filler.
Figure 18 A and 18B represent the chip erecting device 100 of second embodiment of the invention.Chip erecting device 100 provides heater 164 to 167 to replace the ultra-violet lamp 104 to 107 of the chip erecting device 100 shown in Fig. 9 A and the 9B.Heater 164 to 167 is provided with around chip installation site 109, with all sides with hot line 168 irradiation magnetic head IC chips 11.
As for adhesive, can use resinoid 150A.
When magnetic head IC chip 11 is crushed on the hanging stick 12 and magnetic head IC chip 11 is applied ultrasonic wave, heater 164 to 167 is connected and is shone a part of 151a of the resinoid 150A that exposes magnetic head IC chip 11 edges, the exposed portions serve of hardening thus 151a with hot line 168.Thus, can prevent that adhesive 150A from flowing out hanging stick 12, and can form good outline line 156.
Three, the 4th and the 5th embodiment has solved the problem that the adhesive that overflows adheres to soldering appliance.
Figure 19 A and 19B represent the chip erecting device 100B of third embodiment of the invention.Chip erecting device 100B does not comprise the ultra-violet lamp 104 to 107 and the controller 134 of the chip erecting device 100 shown in Fig. 9 A and the 9B, and provides soldering appliance 112C replacement soldering appliance 112 shown in Figure 20.
Soldering appliance 112C is made by stainless steel, is cylindricality.The section of soldering appliance 112C is square corresponding to magnetic head IC chip 11.In addition, the soldering appliance 112 of soldering appliance 112C and routine is measure-alike.The difference of soldering appliance 112C and soldering appliance 112 has the side of V-arrangement for it.In other words, soldering appliance 112C is a square column basically, have four V-arrangement side 112Ca to 112Cd and four turning 112Ce to 112Ch.Side 112Ca curves inwardly to flat surfaces actual between per two the adjacent turnings of 112Ch with respect to turning 112Ce to 112Cd.
Shown in Figure 19 A, soldering appliance 112C draws magnetic head IC chip 11 so that magnetic head IC chip 11 is pressed to hanging stick 12, turning 112Ce to 112Ch then corresponding to the turning 11a of magnetic head IC chip 11.The side 112Ca of soldering appliance 112C to 112Cd with respect to the side 11b of magnetic head IC chip 11 center curvature towards magnetic head IC chip 11.
When pushing magnetic head IC chip 11 by soldering appliance 112C, adhesive 150C can spill into the upper surface of magnetic head IC chip 11 from below.In Figure 19 A and 19B, the part of overflowing of adhesive 150C is represented by reference number 150Ca.When viewed from above, the adhesive 150C that applies is for circular, and overflows part and answer radiation ground to expand.Therefore, the adhesive 150C's on magnetic head IC chip 11 upper surfaces overflows on the side 11b that part 150Ca is positioned at magnetic head IC chip 11.
Because the side 112Ca of soldering appliance 112C is to the center curvature of 112Cd towards magnetic head IC chip 11, so the overflowing part 150Ca and can not adhere to the side 112Ca of soldering appliance 112C to 112Cd of adhesive 150C.Therefore the top of soldering appliance 112C always keeps clean, and when finishing the installation of a magnetic head IC chip 11, does not need to clear up troublesomely the top of soldering appliance 112C at every turn.
For the part of overflowing that prevents magnetic head IC chip 11 upper surface adhesives adheres to the top of soldering appliance, also the top of soldering appliance can be processed into squarely, and make soldering appliance more much smaller than magnetic head IC chip.Yet this moment, soldering appliance is pushed the center of magnetic head IC chip 11, and the pressure of soldering appliance concentrates on the center of magnetic head IC chip 11.Consequently in magnetic head IC chip 11, will chap.
Because soldering appliance 112C is measure-alike with the soldering appliance 112 of routine basically, therefore four turning 112Ce push the adjacent area of the turning 11a of magnetic head IC chip 11 to 112Ch.Therefore, the same with conventional soldering appliance 112, soldering appliance 112C pushes the entire upper surface of magnetic head IC chip 11, can not chap in magnetic head IC chip 11 therefrom.
Replace soldering appliance 112C shown in Figure 20, can use soldering appliance 112D shown in Figure 21 or soldering appliance 112E shown in Figure 22.
Soldering appliance 112D shown in Figure 21 have four turning 112De to the side 112Da of 112Dh and four bendings to 112Dd.Side 112Da curves inwardly to imaginary flat surfaces between the 112Dh with respect to adjacent corners 112De to 112Dd.
Soldering appliance 112E have four turning 112Ee to the side 112Ea of 112Eh and four bendings to 112Ed.Side 112Ea curves inwardly to imaginary flat surfaces between the 112Eh with respect to adjacent corners 112Ee to 112Ed.
Adopt soldering appliance 112D shown in Figure 21 or soldering appliance 112E shown in Figure 22, can obtain the same effect with soldering appliance 112C shown in Figure 20.
The fourth embodiment of the present invention has solved by the ultrasound conductivity low problem of instrument to magnetic head IC chip.
Figure 23 A and 23B represent the chip erecting device 100F of fourth embodiment of the invention.Chip erecting device 100F provides polyimide film supporting mechanism 170 on workbench 101, replace the ultra-violet lamp 104 to 107 of Fig. 9 A and 9B chips erecting device 100.In Figure 23 A and 23B, represent by identical reference number with parts identical among Fig. 9 A and the 9B, omitted explanation to these parts.The Width of chip erecting device 100F is represented that by X1 and X2 the depth direction of chip erecting device 100F is represented by Z1 and Z2.
As shown in figure 24, polyimide film supporting mechanism 170 comprises U-shaped framework 172, is arranged on X1 one side of framework 172 and supports the feed roller support component 174 of the feed roller 173 be used to present banding pattern polyimide film 171 and is arranged on X2 one side of framework 172 and supports motor 175 and the take up roll support component 174 of take up roll 176.U-shaped framework 172 can move at Y1-Y2 direction upper edge guide rail 178 on workbench 101.The travel mechanism 181 of containing motor 180 is travelling frame 172 between insertion position P1 under the soldering appliance 112 and the retrieving position that moves from insertion position P1 along the Y2 direction.Banding pattern polyimide film 171 flatly extends between feed roller 173 and take up roll 176, with the upper surface of the magnetic head IC chip 11 that is mounted at identical height P3.
Control unit 130F comprises the controller 190 of controlling motor 180 and the controller 191 of controlling motor 175, replaces the controller 134 among Fig. 9 B.
Referring now to Figure 25,, introduces the method for the head slider assembly 19 that uses above chip erecting device 100F shop drawings 2.
By step 140 to 144,147 and 200 to 205 make head slider assembly 19.In these steps 140 to 144, among 147 and 200 to 205, carry out step 144 and 200 to 205 to the piece mounting device of operation core shown in 26F 100F by Figure 26 A.
Polyimide film supporting mechanism 170 is positioned at the retrieving position P2 shown in Figure 23 B and 24.Carry out step 140 to 144 with the same way as of operation shown in Figure 11.
Figure 27 represents the situation after the positioning step 144.In Figure 27, a magnetic head IC of the top vacsorb chip 11 of soldering appliance 112, and stop at preposition, so that magnetic head IC chip 11 is navigated on the hanging stick that is fixed on the workbench 101.
The interim step 200 (referring to Figure 28,26A and 26B) of placing
Along with the startup of elevating mechanism (not shown), soldering appliance 112 moves down, so that magnetic head IC chip 11 expansion adhesives 150.Therefore, magnetic head IC chip 11 is located and is bonded on the hanging stick 12 by adhesive 150.Thus, magnetic head IC chip 11 is placed on the hanging stick 12 provisionally.
Soldering appliance lifting step 201 (referring to Figure 29,26A and 26B)
Shown in Figure 26 A, shut off valve 115 is to stop vacsorb.Shown in Figure 28 and 26B, soldering appliance 112 moves up by the elevating mechanism (not shown), and magnetic head IC chip 11 is stayed on the hanging stick 12.
Polyimide film inserting step 202 (referring to Figure 30 and 26C)
Shown in Figure 26 C, by controller 190 drive motors 180, polyimide film supporting mechanism 170 moves along the Y1 direction by travel mechanism 181.Polyimide film supporting mechanism 170 moves to insertion position P1 shown in Figure 30, so that polyimide film 171 covers magnetic head IC chip 11.
Push and sonic oscillation step 203 (referring to Figure 31,26D and 26E)
Along with the startup of elevating mechanism (not shown), soldering appliance 112 moves down shown in Figure 26 B.The control signal work that load cell 114 transmits according to controller 132 is shown in Figure 26 D.As shown in figure 31, the soldering appliance 112 of reduction is pushed magnetic head IC chip 11 with predetermined power F via polyimide film 171, therefrom the prominent point 51 of gold is pressed to gold solder dish 61.
Shown in Figure 26 E, the control signal starting oscillation that ultrasonator 113 transmits according to controller 131, and keep several seconds of vibrating.Along with ultrasonator 113 vibrations, soldering appliance 112 is along the direction sonic oscillation of arrow B shown in Figure 31.The sonic oscillation of soldering appliance 112 is sent to the prominent point 51 of gold on the magnetic head IC chip 11 via polyimide film 171.The prominent point 51 of gold and then to gold solder dish 61 sonic oscillations.Therefrom the prominent point 51 of gold is welded on the gold solder dish 61.
Coefficientoffriction 10 between stainless soldering appliance 112 and the polyimide film 171 is in 1 to 4 scope, also in 1 to 4 scope, these coefficientoffrictions 10 and μ 11 are greater than the coefficientoffriction 1 between instrument 75 and the magnetic head IC chip 11 for coefficientoffriction 11 between polyimide film 171 and the silicon magnetic head IC chip 11.Therefore can carry out ultrasonic wave more efficiently from soldering appliance 112 to magnetic head IC chip 11 than prior art and transmit, and can in the time cycle shorter, finish prominent point 51 the welding of gold to gold solder dish 61 than prior art.
Soldering appliance promotes and the polyimide film supporting mechanism is regained step 204 (referring to Figure 32,26B and 26C)
Along with starting the elevating mechanism (not shown) shown in Figure 26 B, soldering appliance 112 moves up, shown in Figure 32 B.Shown in Figure 26 C,, move polyimide film supporting mechanism 170 along the Y2 direction by travel mechanism 181 by controller 190 drive motors 180.Polyimide film supporting mechanism 170 is return the retrieving position P2 shown in Figure 32 B, and polyimide film 171 makes magnetic head IC chip 11 be in exposed state from 11 withdrawals of magnetic head IC chip.
Heating steps 147
From chip erecting device 110F, take out it and be welded with the hanging stick 12 of magnetic head IC chip 11, and be placed in the heating furnace, shown in Fig. 4 C.In heating furnace, the whole adhesive 151 of thermmohardening.Thus, finish the head slider assembly 19A shown in Figure 17 A and the 17B.
Adhesive 151 becomes end filler 155.Be formed on the prominent point of the gold 51 gold solder dishes 61 that are welded on the hanging stick 12 on magnetic head IC chip 11 lower surfaces.Magnetic head IC chip 11 is welded on the hanging stick 12 by the end filler 155 that ultraviolet curing and hardening heat cure adhesive 150 form.
Polyimide film feed step 205 (referring to Figure 33 A, 33B and 26F)
Shown in Figure 26 F, according to the signal drive motor 175 of controller 191 transmission.Shown in Figure 33 A and 33B, take up roll 176 is rolled banding pattern polyimide film 171 in the direction of arrow E.Polyimide film 171 is sent 173 along the X2 direction from feed roller then.The length that banding pattern polyimide film 171 moves along the X2 direction equals every side length of magnetic head IC chip 11.Thus, preparation is used to install the new polyimide film of next magnetic head IC chip.
According to upper type, finish the operation of chip erecting device 100F.In above operation, push the time cycle that sonic oscillation step 203 need be shorter than prior art.Therefore, can more make head slider assembly in the highland than prior art practicality.
Because soldering appliance 112 is exerted pressure and sonic oscillation to magnetic head IC chip 11 via polyimide film 171 as shown in figure 31, so can obtain following two subsidiary effects:
Since the polyimide film pushed by soldering appliance 112 171 forms by synthetic resin, therefore since the small concavo-convex upper surface of polyimide film 171 that makes of soldering appliance 112 end faces be out of shape.Thus, the end face of soldering appliance 112 adheres to the upper surface of polyimide film 171 securely.Therefore, can save the orientation of soldering appliance 112 end faces.The lower surface of polyimide film also adheres on the upper surface of magnetic head IC chip 11 securely.When soldering appliance 112 sonic oscillations, magnetic head IC chip 11 turns back to the home position by set-point.Therefore on the position of magnetic head IC chip 11, can not depart from.
2. the polyimide film 171 that covers magnetic head IC chip 11 upper surfaces can prevent that adhesive from overflowing on the upper surface of magnetic head IC chip 11.
The fifth embodiment of the present invention has solved the problem that departing from of magnetic head IC chip causes defectiveness to be installed.
Figure 34 A represents the head slider assembly 19G of fifth embodiment of the invention to 34D.Identical with above embodiment, head slider assembly 19G is arranged on magnetic head IC chip 11 on the hanging stick 12G, and soldering appliance 112 is exerted pressure and sonic oscillation to magnetic head IC chip 11.Thus, on the prominent point of the gold 51 gold solder dish 61G that are soldered on the hanging stick 12G, and magnetic head IC chip 11 is welded on the hanging stick 12G by the end filler 155 that hardens.
Each gold solder dish 61 G has length L 20 on the sonic oscillation B direction (X1-X2 direction) that soldering appliance 112 produces, length L 21 is arranged on the direction perpendicular to sonic oscillation B.Length L 20 is four times of length L 21.Therefore, each gold solder dish 61G extends on the direction of sonic oscillation B.
Figure 34 A and 34B represent to be arranged on the magnetic head IC chip 11 on the hanging stick 12G.The center of prominent point 51 each corresponding gold solder dish 61 G of contact of each gold.Because the end face 112a of soldering appliance 112 has little orientation, so when soldering appliance 112 sonic oscillations, on a direction of sonic oscillation (for example, on the X1 direction), magnetic head IC chip 11 is the home position shown in slip chart 34A and the 34B a little.Yet applying the gold solder dish 61G that extends on the direction of sonic oscillation B by soldering appliance 112, can prevent that the prominent point 51 of each gold from departing from each gold solder dish 61G.Thus, the prominent point 51 of gold correctly is welded on the gold solder dish 61G.
Replace soldering appliance 112, can use any soldering appliance 112C, 112D and the 112E shown in Figure 20 to 22.
As Figure 35 A to 35H and 36A to making long gold solder dish 61G shown in the 36D.
At first, shown in Figure 35 A and 35B, Copper Foil 211 is soldered to the upper surface of the hanging stick substrate parts of being made by stainless steel 210, forms Copper Foil hanging stick 212 thus.Next, photoresist film 213 is formed on the Copper Foil hanging stick 212, shown in Figure 35 C and D.The photomask 214 of the window 214a that the gold solder dish 61G that has and grow is identical shaped is arranged on the photoresist film 213, shown in Figure 35 E and 35F.Light source 215 exposure hanging sticks 212 then, shown in Figure 35 G and 35H, the hardened photoresist film 213 thus.Next, corrosion photoresist and stay photoresist part 213a is shown in Figure 36 A and 36B.Also corrode Copper Foil 211, shown in Figure 36 C and 36D, and remove photoresist part 213a, shown in Figure 36 E and 36F.Thus, Chang gold solder dish 61G just is formed on the hanging stick substrate parts 210.
The sixth embodiment of the present invention has solved the problem identical with the 5th embodiment.
Figure 37 B represents the head slider assembly 19H of sixth embodiment of the invention.Head slider assembly 19H comprises magnetic head IC chip 11H.Described magnetic head IC chip 11H has the prominent point of the gold that is provided with along four limits 51H.In order to illustrate, represent the profile of magnetic head IC chip 11H and the profile of soldering appliance 112C with double dot dash line.Shown in Figure 37 A, head slider assembly 19H is positioned at magnetic head IC chip 11H on the hanging stick 12H.Soldering appliance 112 is exerted pressure and sonic oscillation to magnetic head IC chip 11H then, and the prominent point of gold 51H being welded on the gold solder dish 61H on the hanging stick 12H, and the end filler (not shown) of magnetic head IC chip 11H by sclerosis is welded on the hanging stick 12H.
Consistent with the structure of the prominent point of gold 51H on being attached to magnetic head IC chip 11H, the gold solder dish 61H on the hanging stick 12H is set along four square limits.Each gold solder dish 16H have with Figure 34 A to the identical shape of the dish of gold solder shown in 34D 61G.The prominent point of gold 51H has a longitudinal direction V1-V2 between X1 direction and Y1 direction, be equivalent to axis X 1-X2 and be rotated counterclockwise 45 degree.According to this layout, can prevent phase mutual interference between the prominent point of the gold 51H.In addition, design soldering appliance 112 sonic oscillation on the direction of V1-V2.
Because the slight orientation of soldering appliance 112 end faces, so when soldering appliance 112 sonic oscillations, (for example, on the V1 direction) magnetic head IC chip 11H initial position shown in the slip chart 37A a little on a sonic oscillation direction.Yet the prominent point of gold 51H can not separate with gold solder dish 61H, and stays on the gold solder dish 61G.Thus, the prominent point of gold 51H can correctly be welded on the gold solder dish 61H.
Replace soldering appliance 112, can use any soldering appliance 112C, 112D and the 112E shown in Figure 20,21 and 22.
Be noted that the present invention is not only applicable to the head slider assembly of above introduction, also be applicable in the multi-chip module 36 of printed circuit board unit 30 shown in Figure 3, so that IC chip 31 is installed on the substrate 32.

Claims (2)

1, a kind ofly semiconductor chip is installed in method on the substrate, may further comprise the steps by soldering appliance:
Push semiconductor chip, simultaneously insulating binder is placed the semiconductor chip that providing prominent point and provide between the substrate of pad, and
To dash forward a little is ultrasonically welded on the pad,
Wherein will place between semiconductor chip and the soldering appliance by the thin slice bigger, carry out described ultra-sonic welded thus for the coefficient of friction of semiconductor chip and soldering appliance than the coefficient of friction between semiconductor chip and the soldering appliance.
2, a kind of semiconductor core piece mounting device comprises:
Soldering appliance, described soldering appliance is pushed semiconductor chip when insulating binder places the semiconductor chip that providing prominent point and provides between the substrate of pad, and will dash forward and a little be ultrasonically welded on the pad; And
Be used between semiconductor chip and soldering appliance moving and placing the device of thin slice, this thin slice is bigger than the coefficient of friction between semiconductor chip and the soldering appliance to the two coefficient of friction of semiconductor chip and soldering appliance.
CNB2004100018800A 2000-04-25 2000-08-04 Method and device for mounting semiconductor chip Expired - Fee Related CN1303854C (en)

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TWI793766B (en) * 2021-09-15 2023-02-21 日商新川股份有限公司 Manufacturing apparatus and manufacturing method of semiconductor device

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CN1535105A (en) 2004-10-06
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CN1542933A (en) 2004-11-03
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CN1542936A (en) 2004-11-03
KR20010098327A (en) 2001-11-08

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