WO2013094098A1 - 電子部品実装ライン及び電子部品実装方法 - Google Patents
電子部品実装ライン及び電子部品実装方法 Download PDFInfo
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- WO2013094098A1 WO2013094098A1 PCT/JP2012/006721 JP2012006721W WO2013094098A1 WO 2013094098 A1 WO2013094098 A1 WO 2013094098A1 JP 2012006721 W JP2012006721 W JP 2012006721W WO 2013094098 A1 WO2013094098 A1 WO 2013094098A1
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- WIPO (PCT)
- Prior art keywords
- electronic component
- mounting
- substrate
- component mounting
- thermosetting resin
- Prior art date
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- 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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K13/00—Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
- H05K13/04—Mounting of components, e.g. of leadless components
-
- 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
- H01L24/81—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
-
- 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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/008—Soldering within a furnace
-
- 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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/20—Preliminary treatment of work or areas to be soldered, e.g. in respect of a galvanic coating
- B23K1/203—Fluxing, i.e. applying flux onto surfaces
-
- 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
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/06—Solder feeding devices; Solder melting pans
- B23K3/0646—Solder baths
- B23K3/0669—Solder baths with dipping means
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K13/00—Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K13/00—Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
- H05K13/04—Mounting of components, e.g. of leadless components
- H05K13/046—Surface mounting
- H05K13/0465—Surface mounting by soldering
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K13/00—Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
- H05K13/04—Mounting of components, e.g. of leadless components
- H05K13/046—Surface mounting
- H05K13/0469—Surface mounting by applying a glue or viscous material
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/303—Surface mounted components, e.g. affixing before soldering, aligning means, spacing means
- H05K3/305—Affixing by adhesive
-
- 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
- B23K2101/42—Printed 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
- H01L2924/30—Technical effects
- H01L2924/35—Mechanical effects
- H01L2924/351—Thermal stress
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/01—Tools for processing; Objects used during processing
- H05K2203/0104—Tools for processing; Objects used during processing for patterning or coating
- H05K2203/0126—Dispenser, e.g. for solder paste, for supplying conductive paste for screen printing or for filling holes
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
- H05K3/341—Surface mounted components
- H05K3/3431—Leadless components
- H05K3/3436—Leadless components having an array of bottom contacts, e.g. pad grid array or ball grid array components
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
- H05K3/341—Surface mounted components
- H05K3/3431—Leadless components
- H05K3/3442—Leadless components having edge contacts, e.g. leadless chip capacitors, chip carriers
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- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49169—Assembling electrical component directly to terminal or elongated conductor
Definitions
- the present invention relates to an electronic component mounting line for mounting a small electronic component such as a chip component and an electronic component such as a chip size package on a substrate.
- CSP chip size packages
- CSP has a main surface in which a plurality of terminals are regularly arranged, and solder bumps are formed on each terminal.
- solder bumps provided on a plurality of terminals are landed on electrodes of a printed wiring board called a land, heated, melted (reflowed), and then allowed to cool.
- the CSP and the printed wiring board are interconnected.
- each terminal of the CSP is electrically connected to the land of the printed wiring board and is joined to the printed wiring board by solder.
- Patent Document 1 discloses a method of supplying a reinforcing resin only to a position (reinforcing position) of a printed wiring board corresponding to a peripheral portion of the electronic component before mounting an electronic component such as a CSP on the printed wiring board. Has proposed. This method is superior in that the electronic component can be easily repaired as compared with the case of using an underfill material.
- chip-type electronic components joined by cream solder such as chip resistors and chip capacitors, leaded components such as connectors, and the like are mounted on the printed wiring board.
- the equipment for mounting electronic components on such a printed wiring board includes a screen printing device for printing cream solder, an adhesive application device for applying a temporary adhesive, and a chip-type small electronic device.
- Electronic component mounting device (first electronic component mounting device) for mounting components
- electronic component mounting device (second electronic component mounting device) for mounting atypical electronic components such as large-sized electronic components and connectors including CSP
- solder An electronic component mounting line in which reflow devices to be melted are arranged in the order of description is used.
- Such a configuration of the electronic component mounting line has been completed and can be mounted and reflowed from a microelectronic component to a large-sized electronic component ranging from 30 mm square to 30 mm square size, and has a history of more than 20 years. is doing.
- the reinforcing resin 105 applied in the step (2) can be contacted with the CSP 210 mounted in the step (4), that is, the components of the CSP 210 when the CSP 210 is mounted. It is necessary to adjust the height to reach the inner substrate 211 and to supply the reinforcing position 104 close to the land 102b on the printed wiring board 101.
- the reinforcing resin may flow in the surface direction during that time.
- the reinforcing resin may come into contact with the printed cream solder placed on the land in the step (1), thereby reducing the activity of the cream solder.
- the shape of the reinforcing resin progresses over time and the height becomes too low, as shown in FIG. 10B, even if the CSP 210 is disposed, the reinforcing resin and the CSP are in contact with each other. In some cases, the intended purpose of reinforcement could not be achieved.
- An object of the present invention is to provide a mounting line and a mounting method capable of suppressing the above-described problems, that is, mounting defects of electronic components due to the flow of reinforcing resin over time.
- the electronic component mounting line of the present invention is an electronic component mounting line that sequentially performs cream solder printing, electronic component mounting, and reflow on the substrate while moving the substrate from upstream to downstream, and is mounted via cream solder.
- a substrate supply device for supplying a substrate having a first mounting region for mounting one electronic component and a second mounting region for mounting a second electronic component having a plurality of solder bumps; and the substrate supplied from the substrate supplying device.
- a screen printing device for applying cream solder to the first mounting region; a first electronic component mounting device for mounting the first electronic component on the first mounting region of the substrate to which the cream solder is applied; and the substrate.
- An application head for applying a thermosetting resin to at least one reinforcing position set at a peripheral edge of the second mounting region of the second mounting region, and the second mounting of the substrate A mounting head for mounting the second electronic component in a region; a second electronic component mounting apparatus comprising: a heating head for heating the first electronic component and a substrate on which the second electronic component is mounted; A reflow device for joining the first electronic component and the second electronic component to the substrate by melting the solder bump, curing the thermosetting resin, and allowing it to cool; The component mounting device mounts the second electronic component after the application of the thermosetting resin to the reinforcing position such that the peripheral portion thereof contacts the thermosetting resin applied to the reinforcing position.
- the electronic component mounting method of the present invention includes a first electronic component having a plurality of connection terminals connected by cream solder and a plurality of solder bumps while moving the substrate from upstream to downstream of the electronic component mounting line.
- a first step of preparing a substrate having a second mounting region including an electrode, a second step of applying cream solder to the first electrode by a screen printing device disposed in the electronic component mounting line, and a plurality of steps A third step of mounting the first electronic component on the substrate such that the connection terminals land on the corresponding cream solder of the first electrode; and A fourth step of applying a thermosetting resin to at least one reinforcing position set at the edge, and the second electronic component so that the plurality of solder bumps land on the corresponding second electrodes.
- the first electronic component and the second electronic component mounted on the substrate are heated to melt the cream solder and the solder bumps, and the thermosetting resin is cured and allowed to cool.
- the step of applying the thermosetting resin to the reinforcing position and the mounting step of the second electronic component are performed by mounting the second electronic component.
- the step of applying the functional resin the second electronic component is mounted on the substrate without taking time.
- the first electronic component, the second electronic component, and the substrate constituting the mounting substrate manufactured by the electronic component mounting line of the present invention will be described.
- FIG. 1 is a perspective view of an example of the first electronic component 200.
- the first electronic component 200 has at least one connection terminal 201 joined by cream solder.
- Examples of electronic components joined by cream solder include chip components typified by 0402 size and 1005 size, and leaded components such as transistors.
- chip components typified by 0402 size and 1005 size, and leaded components such as transistors.
- coating (transfer) of a flux to a bump is classified into a 1st electronic component.
- FIG. 2A is a longitudinal sectional view of an example of the second electronic component 210
- FIG. 2B is a bottom view thereof.
- the second electronic component 210 is a CSP in which a semiconductor element 212 mounted on the upper surface of a thin component internal substrate 211 is sealed with a sealing resin 213.
- the lower surface of the component internal substrate 211 constitutes a main surface 211s of the second electronic component 210, and a plurality of terminals are regularly arranged in a matrix on the main surface 211s. Is provided.
- the second electronic component is a component to be reinforced by the reinforcing resin, and flux is applied (transferred) to the solder bumps 214 before being mounted on the substrate.
- the substrate 101 includes a first mounting region provided with the first electrode 102 a connected to the connection terminal 201 of the first electronic component 200, and a plurality of solder bumps 214 of the second electronic component 210.
- a second mounting region provided with a plurality of second electrodes 102b to be connected is provided.
- at least one reinforcing position 104 to which a reinforcing resin, that is, a thermosetting resin is applied, is set in the peripheral portion of the second mounting region, that is, the region corresponding to the peripheral portion of the second electronic component 210. .
- a plurality of reinforcing positions 104 are usually set at the peripheral edge of the second mounting region where the plurality of second electrodes 102b of the substrate 101 are provided.
- the peripheral edge portion of the second mounting area of the substrate 101 is a frame-shaped area corresponding to the peripheral edge 211x of the main surface 211s of the second electronic component 210 mounted in the second mounting area.
- the reinforcing position 104 is set at a predetermined location in the frame-like region.
- the shape of the main surface of a general CSP is a rectangle. In the rectangular second electronic component, it is preferable to set a plurality of reinforcing positions so as to correspond to at least the four corners or the vicinity thereof.
- FIG. 4 shows an overall image of the device configuration of the electronic component mounting line 300 according to the present embodiment.
- the electronic component mounting line is a system in which multiple devices are connected by a substrate transfer conveyor. While the substrate is moved from upstream to downstream by the connected substrate transfer conveyor, cream solder printing, electronic component mounting, reflow, etc. are performed on the substrate. It is performed sequentially.
- the electronic component mounting line 300 is (I) a substrate supply device 301 for supplying a substrate 101 for mounting electronic components; (Ii) a screen printing device 302 that applies cream solder to a predetermined electrode (first electrode 102a) provided in the first mounting region of the substrate 101 supplied from the substrate supply device 301 by screen printing; (Iii) a first electronic component mounting device 303 including a first mounting head for mounting the first electronic component 200 on the first electrode 102a coated with cream solder; (Iv) Second electronics including a coating head for applying the reinforcing resin 105 at the plurality of reinforcing positions 104 of the substrate 101 and a second mounting head for mounting the second electronic component 210 in the second mounting region.
- a component mounting device 304X (V) A reflow device that is disposed in a subsequent process of the second electronic component mounting device 304X and that solders the first electronic component 200 and the second electronic component 210 to the substrate 101 by heating the substrate 101 and melting the solder. 305, (Vi) a substrate recovery device 306;
- FIG. 5 is a configuration diagram of the configuration in which the first electronic component mounting device 303 and the second electronic component mounting device 304X in the electronic component mounting line 300 are connected as viewed from above.
- the first electronic component mounting device 303 and the second electronic component mounting device 304 ⁇ / b> X connect the substrate transfer conveyors 309 a and 309 b of the respective devices, thereby transferring the substrate transferred from the screen printing device 302.
- the line for conveying 101 is comprised.
- Substrate transport conveyors 309a and 309b have a function of transporting and positioning a substrate to a work position (substrate holding unit) for mounting electronic components and applying resin in each device.
- the arrow in FIG. 5 shows the advancing direction from the upstream of the electronic component mounting line 300 to the downstream.
- the first electronic component mounting device 303 mounts the first electronic component 200 on the first electrode 102a on the substrate 101 conveyed from the screen printing device 302.
- the first electronic component mounting apparatus 303 includes a substrate transport conveyor 309a disposed in the center, a first component supply unit 313 disposed on the side of the substrate transport conveyor 309a, and a first mounting head 323.
- the substrate transport conveyor 309 a includes a substrate holding unit 310 a that holds a substrate that is a work target of the first mounting head 323.
- a plurality of tape feeders for supplying the first electronic component 200 are arranged in the first component supply unit 313.
- the first mounting head 323 is supported by an XY movement mechanism (not shown), and moves from the first component supply unit 313 to the upper space of the substrate transport conveyor 309a under the control of the XY movement mechanism by a predetermined control unit.
- the first mounting head 323 includes a suction nozzle 323d that moves up and down by a built-in lifting mechanism, and picks up the first electronic component 200 from the first component supply unit 313 by the lifting operation and suction of the suction nozzle 323d. Then, the first electronic component 200 is mounted on the substrate 101 by lifting and lowering from above the first mounting region of the substrate 101 and suction release (vacuum break).
- the first mounting head 323 is mounted on the substrate 101 so that the connection terminals 201 of the first electronic component 200 are landed on the corresponding first electrodes 102a to which cream solder is applied in advance.
- the second electronic component mounting device 304X has a reinforcing position at the reinforcing position 104 set on the peripheral portion of the second mounting region including the second electrode 102b on the substrate 101 conveyed from the first electronic component mounting device 303. It has a function of applying the resin 105 and a function of mounting the second electronic component so that the peripheral portion thereof is in contact with the reinforcing resin 105 after the reinforcing resin 105 is applied to the reinforcing position 104. That is, the second electronic component mounting apparatus 304X has a structure in which the application process of the reinforcing resin 105 to the reinforcing position 104 and the mounting of the second electronic component 210 to the second mounting area can be sequentially performed. .
- the second electronic component mounting apparatus 304X includes a substrate transport conveyor 309b disposed in the center, a coating head 324 having a coating nozzle 324d that discharges the reinforcing resin 105, a second component supply unit 315, The second mounting head 325 is provided.
- the substrate transport conveyor 309b includes a substrate holding unit 310b that holds a substrate that is a work target of the coating head 324 and the second mounting head 325.
- the coating head 324 is supported by an XYZ moving mechanism (not shown), and moves in the horizontal and vertical directions in the space above the substrate transport conveyor 309b by the control of the XYZ moving mechanism by a predetermined control unit. Operations such as movement of the coating head 324 and discharge of the reinforcing resin 105 from the coating nozzle 324d are controlled by commands from the control unit.
- the second component supply unit 315 is a tray feeder, and a tray in which a plurality of second electronic components 210 are stored is disposed.
- the second mounting head 325 is supported by an XY moving mechanism (not shown), and moves from the second component supply unit 315 to the upper space of the substrate transport conveyor 309c under the control of the XY moving mechanism by a predetermined control unit.
- the second mounting head 325 includes a suction nozzle 325d that moves up and down by a built-in lifting mechanism, and picks up the second electronic component 210 from the second component supply unit 315 by the lifting operation and suction of the suction nozzle 325d. Then, the second electronic component 210 is mounted on the substrate 101 by a lifting operation and suction release (vacuum break) from above the second mounting region of the substrate 101.
- the second electronic component mounting apparatus 304X may include a transfer unit 320 that supplies a coating film of flux.
- the transfer unit 320 has a mechanism capable of supplying a flux coating film having a thickness suitable for transferring to the bumps 214 of the second electronic component 210.
- a base table 320a provided below, a transfer table 321 provided on the upper surface of the base table 320a, and a squeegee unit 322 disposed above the transfer table 321 are provided.
- the squeegee unit 322 includes a first squeegee member 322a and a second squeegee member 322b each having a length substantially equal to the width of the transfer table 321 in the Y-axis direction, and these are parallel to the Y-axis direction at a predetermined interval. Is arranged.
- Each squeegee member can be moved up and down by an elevating mechanism built in the squeegee unit 322, that is, can advance and retreat with respect to the coating film formed on the transfer table 321.
- the transfer unit 320 moves the squeegee unit 322 relative to the transfer table 321 in the horizontal direction, so that the flux in the transfer table 321 is thinly extended by each squeegee member. A film is formed.
- the second mounting head 325 moves above the transfer unit 320 and moves the suction nozzle 325d up and down to move the solder bump 214 of the second electronic component 210 as shown in FIG. 6C. Is brought into contact with the coating film of the flux 206, and the flux 206 is transferred to the solder bump 214. Thereafter, the second mounting head 325 moves to the second mounting area of the substrate, and the second electronic component 210 is mounted on the substrate 101 such that the plurality of solder bumps 214 are landed on the corresponding second electrodes 102b. To do. Such movement of the second mounting head 325 is controlled by a command from a predetermined control unit.
- the first electronic component mounting device 303 is disposed upstream of the second electronic component mounting device 304 ⁇ / b> X.
- the order of arrangement of 303 and the second electronic component mounting apparatus 304X is not limited to this. That is, the first electronic component mounting apparatus 303 may be disposed downstream of the second electronic component mounting apparatus 304X.
- the electronic component mounting line may include a plurality of first electronic component mounting devices, and similarly may include a plurality of second electronic component mounting devices.
- the plurality of first electronic component mounting devices and the plurality of second electronic component mounting devices can be arranged in an arbitrary order.
- the manufacturing method of the mounting substrate by the electronic component mounting line 300 of this invention is demonstrated. Referring to FIGS. 7 and 8, first, the board 101 on which no component as shown in FIG. 7A is mounted is unloaded from the board supply apparatus 301 (first step) and sent to the screen printing apparatus 302. .
- the screen printing apparatus 302 executes a solder printing process (second process) in which the cream solder 103 is printed on the first electrode 102a of the substrate 101 (FIG. 7B).
- a solder printing process (second process) in which the cream solder 103 is printed on the first electrode 102a of the substrate 101 (FIG. 7B).
- the screen printing apparatus 302 carries out the substrate 101 toward the first electronic component mounting apparatus 303.
- the first electronic component mounting apparatus 303 executes a first electronic component mounting step (third step) for mounting the first electronic component 200 on the substrate 101. Specifically, the substrate 101 is transported to a predetermined work position by the substrate transport conveyor 309a and positioned. Next, the first electronic component 200 supplied by the first component supply unit 313 is sucked and held by the suction nozzle 323d of the mounting head 323. Then, the mounting head 323 is moved horizontally to position the first electronic component 200 in the first mounting area.
- the suction nozzle 323d is moved up and down so that the connection terminal 211 of the first electronic component 200 is landed on the cream solder printed on the first electrode 102a, and the holding by suction is released. Mounted on the substrate 101.
- the first electronic component mounting device 303 drives the substrate transport conveyor 309a to carry the substrate 101 to the second electronic component mounting device 304X.
- the second electronic component mounting device 304 ⁇ / b> X has a reinforcing position 104 set at the peripheral portion of the second mounting region for mounting the second electronic component 210 on the substrate 101.
- a resin application step (fourth step) for applying the reinforcing resin 105 is performed. Specifically, the substrate 101 is transported to the predetermined substrate holding unit 310b by the substrate transport conveyor 309b and positioned. Next, the coating head 324 is moved horizontally to position the coating nozzle 324d above the reinforcing position 104. Then, the reinforcing resin 105 is applied to the reinforcing position 104 from the application nozzle 324d.
- the application pattern of the reinforcing resin 105 is not particularly limited. For example, the reinforcing resin 105 is applied to reinforcing positions corresponding to the four corners of the peripheral portion of the rectangular second electronic component.
- the reinforcing resin 105 is applied to a height that allows contact with the component internal substrate 211 that constitutes the package of the second electronic component 210 to be mounted in a later step. That is, as shown in FIG. 10A, when the second electronic component 210 is mounted, the viscosity of the reinforcing resin 105 is set so that the height reaches the component internal substrate 211 of the second electronic component 210. And thixotropy are adjusted.
- thermosetting resin is used as the reinforcing resin.
- thermosetting resin include an epoxy resin, a phenol resin, a melamine resin, and a urethane resin.
- the second electronic component mounting apparatus 304X finishes applying the reinforcing resin 105 to all the reinforcing positions 104, the second electronic component mounting apparatus 304X continues to mount the second electronic component 210 on the substrate 101 as shown in FIG. 2
- the electronic component mounting process (fifth process) is executed. Specifically, the suction nozzle 325 d of the mounting head 325 sucks and holds the second electronic component 210 supplied by the second component supply unit 315. Then, the mounting head 325 is moved horizontally to position the second electronic component 210 above the transfer unit 320 that forms the coating film of the flux.
- the suction nozzle 325 d is moved up and down while maintaining the suction, whereby the bumps 214 of the second electronic component 210 are brought into contact with the coating film of the flux 206, and the flux 206 is transferred to the plurality of bumps 214.
- Flux 206 may be any material that has an active action of removing oxides and the like present on the electrode surface and bump surface during solder joining.
- the composition of the flux is not particularly limited, and includes, for example, a base agent such as rosin, an activator such as an organic acid or a halide, a solvent, a thixotropic agent, and the like.
- the flux may be a thermosetting flux containing a thermosetting resin component.
- the mounting head 325 is moved horizontally to position the second electronic component 210 in the second mounting area. Then, as shown in FIG. 8C, the plurality of bumps 214 coated with the flux 206 of the second electronic component 210 are landed on the corresponding second electrodes 102b.
- the reinforcing resin 105 applied to the reinforcing position 104 by the second electronic component mounting device 304X starts to flow immediately after the application, but the second electronic component 210 is mounted inside the second electronic component mounting device 304X. Therefore, the reinforcing resin 105 can be brought into contact with the peripheral edge portion 211x of the second electronic component 210 before it largely loses its shape.
- the second electronic component on the second mounting region is not moved to the second mounting region with respect to the substrate 101 held by the substrate holding portion 310b without moving the substrate. Since the mounting is performed, the reinforcing resin 105 does not lose its shape due to vibration or the like accompanying the movement of the substrate. Furthermore, since the flow of the reinforcing resin 105 is suppressed by contacting the second electronic component 210, the reinforcing resin 105 may contact the cream solder on the adjacent first electrode 102a to induce poor bonding. Is reduced.
- the second electronic component mounting device 304X drives the substrate transport conveyor 309b to carry the substrate 101 to the reflow device 305.
- the reflow apparatus 305 performs a reflow process (sixth process) in which the substrate 101 is heated in a furnace to melt the solder.
- the substrate 101 on which the first electronic component 200 and the second electronic component 210 are mounted is heated.
- molten solder bumps and cream solder wet and spread on the electrodes.
- the reinforcing resin 105 is cured, and a resin reinforcing portion 105a is formed as shown in FIG.
- a mounting structure (mounting substrate) in which the first electronic component 200 and the second electronic component 210 are joined to the surface of the substrate 101 by solder is obtained.
- the reinforcing resin 105 is in contact with the second electronic component, while the first electronic component 200 and the second electronic component 210 are in good condition because they are not in contact with the cream solder on the first electrode. Mounted on the substrate 101. Thereafter, the substrate 101 is unloaded from the reflow device 306 and recovered by the substrate recovery device 307.
- the unit device 304Y drives the substrate transport conveyor 309c and carries the substrate 101 to the reflow device 306.
- FIG.7 and FIG.8 demonstrated the case where a 6th process was performed sequentially from a 1st process, you may perform a 3rd process after a 5th process. That is, you may perform each process in order of a 2nd process, a 4th process, a 5th process, and a 3rd process.
- the first electronic component mounting device 303 is arranged downstream of the second electronic component mounting device 304X.
- the combination of the fourth step and the fifth step may be performed a plurality of times.
- a plurality of second electronic component mounting devices 304X may be arranged on the electronic component mounting line, or the fourth and fifth steps may be repeated a plurality of times within one second electronic component mounting device 304X. Good.
- a substrate transfer conveyor 309a disposed in the center of the second electronic component mounting apparatus 304Y includes an upstream substrate holding unit 310c that holds the substrate 101 that is the work target of the coating head 324, and a work target of the second mounting head 325. And a downstream side substrate holding part 310d for holding the substrate 101.
- the coating head 324 moves in the horizontal direction and the vertical direction in the space above the upstream substrate holding part 310c by the control of the XYZ moving mechanism by a predetermined control part.
- the second mounting head 325 moves from the second component supply unit 315 to the upper space of the downstream substrate holding unit 310d under the control of the XY movement mechanism by a predetermined control unit. That is, the coating head 324 and the second mounting head 325 share the upper space of the substrate transport conveyor 309b in the same second electronic component mounting device, and the coating head 324 can move in the upstream space, and the downstream side The second mounting head 325 can be moved in the space.
- the reinforcing resin 105 is applied to the reinforcing position 104 of the substrate 101 by the application head 324.
- the substrate 101 is then transferred by the substrate transfer conveyor 309b to the downstream substrate holding unit 310d provided in the same second electronic component mounting apparatus.
- the second electronic component 210 is mounted by the second mounting head 325 on the second mounting region of the substrate 101 held by the downstream substrate holding unit 310d.
- the second electronic component mounting apparatus 304Y another substrate held by the downstream substrate holding portion 310d while applying the reinforcing resin 105 to the reinforcing position 104 of the substrate 101 held by the upstream substrate holding portion 310c. Since the second electronic component 210 can be mounted in the second mounting area 101, the fourth process and the fifth process described with reference to FIG. 8 can be performed in parallel. Therefore, as compared with the second electronic component mounting apparatus X described with reference to FIG. 5, the working efficiency when manufacturing the mounting board is improved.
- the configuration of the electronic component mounting line of the present invention is not limited to the above embodiment, and can be changed as appropriate.
- An inspection device may be arranged between the two.
- an adhesive coating device for applying an adhesive for temporarily fixing various electronic components is provided between the screen printing device and the various second electronic component mounting devices. And / or downstream of the first electronic component mounting apparatus.
- the electronic component mounting line may have a configuration including a plurality of first electronic component mounting devices or a configuration including a plurality of second electronic component mounting devices.
- the second electronic component mounting apparatuses 304X and 304Y may be used in combination.
- the second electronic component mounting device may be a multi-use type device having a function of applying other types of adhesives and resins, such as an adhesive for temporary fixing, in addition to applying the reinforcing resin.
- the first electronic component mounting device may be a multi-function device having a function of mounting an electronic component other than the first electronic component.
- the second electronic component mounting device may be a multi-function device having a function of mounting an electronic component other than the second electronic component. That is, any device that functions as a first electronic component mounting device or a second electronic component mounting device when incorporated in an electronic component mounting line can be used without particular limitation.
- the solder bump caused by the thermosetting resin supplied as the reinforcing resin being deformed and deformed over time. It is possible to suppress the bonding failure of the bonding portion using the. Therefore, it is useful in the field of surface mounting in which many CSPs and chip-type electronic components are mixedly mounted.
- 101 board (printed wiring board), 102a: first electrode, 102b: second electrode, 103: cream solder, 104: reinforcing position, 105: reinforcing resin, 200: first electronic component, 201: connection terminal, 210: second electronic component, 211: substrate in component, 211s: main surface, 211x: peripheral portion, 212: semiconductor element, 213: sealing resin, 214: bump, 300: electronic component mounting line, 301: substrate supply device , 302: screen printing device, 303: first electronic component mounting device, 304X, 304Y: second electronic component mounting device, 305: reflow device, 306: substrate recovery device, 309a, 309b: substrate conveyor, 310a, 310b, 310c, 310d: substrate holding unit, 313: first component supply unit, 315: second component supply unit, 323: first mounting head, 3 3d: suction nozzle, 324: coating head, 324d: coating nozzle, 325: second mounting head, 325d: suction
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Abstract
Description
図10(a)に示すように、(2)の工程で塗布する補強用樹脂105は(4)の工程で搭載されるCSP210に接触可能な高さ、すなわちCSP210を搭載したときにCSP210の部品内基板211に届くような高さになるように調整して、プリント配線板101上のランド102bに近接する補強位置104に供給される必要がある。
(i)電子部品を実装するための基板101を供給する基板供給装置301と、
(ii)基板供給装置301から供給された基板101の第1搭載領域に設けられた所定の電極(第1電極102a)に、スクリーン印刷によりクリームはんだを塗布するスクリーン印刷装置302と、
(iii)クリームはんだが塗布された第1電極102aに第1電子部品200を搭載する第1搭載ヘッドを具備する第1電子部品搭載装置303と、
(iv)基板101の複数の補強位置104に、補強用樹脂105を塗布する塗布ヘッドを具備するとともに、第2搭載領域に第2電子部品210を搭載する第2搭載ヘッドを具備する第2電子部品搭載装置304Xと、
(v)第2電子部品搭載装置304Xの後工程に配置される、基板101を加熱してはんだを溶融させることにより第1電子部品200及び第2電子部品210を基板101にはんだ接合するリフロー装置305と、
(vi)基板回収装置306と、を具備する。
図7及び図8を参照すれば、まず、図7(a)に示すような部品が搭載されていない基板101が基板供給装置301から搬出され(第一工程)、スクリーン印刷装置302へ送られる。
具体的には、搭載ヘッド325の吸引ノズル325dで、第2部品供給部315によって供給される第2電子部品210を吸引して保持する。そして、搭載ヘッド325を水平移動させて、第2電子部品210をフラックスの塗膜を形成する転写ユニット320の上方に位置決めする。次に、吸引を維持したまま吸引ノズル325dを昇降させることにより、フラックス206の塗膜に第2電子部品210のバンプ214を接触させ、フラックス206を複数のバンプ214に転写する。
第2電子部品搭載装置304Yの中央部に配置された基板搬送コンベア309aは、塗布ヘッド324の作業対象となる基板101を保持する上流側基板保持部310cと、第2搭載ヘッド325の作業対象となる基板101を保持する下流側基板保持部310dとを備えている。
Claims (8)
- 基板を上流から下流へ移動させながら基板へのクリームはんだ印刷、電子部品搭載及びリフローを順次行う電子部品実装ラインであって、
クリームはんだを介して搭載される第1電子部品を搭載する第1搭載領域及び複数のはんだバンプを有する第2電子部品を搭載する第2搭載領域を有する基板を供給する基板供給装置と、
前記基板供給装置から供給される前記基板の前記第1搭載領域にクリームはんだを塗布するスクリーン印刷装置と、
前記クリームはんだが塗布された基板の前記第1搭載領域に、前記第1電子部品を搭載する第1電子部品搭載装置と、
前記基板の前記第2搭載領域の周縁部に設定された少なくとも1つの補強位置に、熱硬化性樹脂を塗布する塗布ヘッドと、前記基板の前記第2搭載領域に前記第2電子部品を搭載する搭載ヘッドと、を備えた第2電子部品搭載装置と、
前記第1電子部品及び前記第2電子部品が搭載された基板を加熱して、前記クリームはんだ及び前記はんだバンプを溶融させるとともに、前記熱硬化性樹脂を硬化させ、放冷することにより、前記第1電子部品及び前記第2電子部品を前記基板に接合するリフロー装置とを備え、
前記第2電子部品搭載装置は、前記補強位置への前記熱硬化性樹脂の塗布後、前記第2電子部品を、その周縁部と前記補強位置に塗布された熱硬化性樹脂とが接触するように搭載する、電子部品実装ライン。 - 前記第2電子部品搭載装置は、上流側基板保持部及び下流側基板保持部を有し、前記上流側基板保持部において、前記補強位置に前記熱硬化性樹脂を塗布した後、前記基板を前記下流側基板保持部に移動させ、前記下流側基板保持部において、前記第2電子部品を前記第2搭載領域に搭載する、請求項1記載の電子部品実装ライン。
- 前記第2電子部品搭載装置は、前記上流側基板保持部に保持された前記基板の前記補強位置に前記熱硬化性樹脂を塗布する間に、前記下流側基板保持部に保持された別の前記基板の前記第2搭載領域に前記第2電子部品を搭載する、請求項2記載の電子部品実装ライン。
- 前記第2電子部品搭載装置が、フラックスの塗膜を形成する転写ユニットを有し、前記第2電子部品を前記第2搭載領域に搭載する前に、前記第2電子部品の前記複数のはんだバンプを前記フラックスの塗膜に接触させて、前記はんだバンプにフラックスを転写する、請求項1~3のいずれか1項記載の電子部品実装ライン。
- 電子部品実装ラインの上流から下流へ基板を移動させながら、クリームはんだにより接続される複数の接続用端子を有する第1電子部品及び複数のはんだバンプを有する第2電子部品を基板に実装する電子部品実装方法であって、
複数の前記接続用端子に接続される複数の第1電極を含む第1搭載領域及び複数の前記はんだバンプに接続される複数の第2電極を含む第2搭載領域を備えた基板を準備する第一工程と、
前記電子部品実装ラインに配置されたスクリーン印刷装置によって、前記第1電極にクリームはんだを塗布する第二工程と、
複数の前記接続用端子がそれぞれ対応する前記第1電極のクリームはんだに着地するように、前記第1電子部品を前記基板に搭載する第三工程と、
前記第2搭載領域の周縁部に設定された少なくとも1つの補強位置に、熱硬化性樹脂を塗布する第四工程と、
前記第2電子部品を前記複数のはんだバンプがそれぞれ対応する前記第2電極に着地するように前記基板に搭載するとともに、前記補強位置に塗布された前記熱硬化性樹脂を前記第2電子部品の周縁部に接触させる第五工程と、
前記電子部品実装ラインに配置されたリフロー装置によって、前記第1電子部品及び前記第2電子部品が搭載された前記基板を加熱して、前記クリームはんだ及び前記はんだバンプを溶融させるとともに、前記熱硬化性樹脂を硬化させ、放冷することにより、前記第1電子部品及び前記第2電子部品を前記基板に接合する第六工程と、を備え、
前記第三工程は、前記電子部品実装ラインに配置された第1電子部品搭載装置によって行い、前記第四工程及び前記五工程は、前記熱硬化性樹脂を塗布する塗布ヘッドと前記第2電子部品を搭載する搭載ヘッドとを備えた第2電子部品搭載装置によって順次行う、電子部品実装方法。 - 前記第2電子部品搭載装置は、上流側基板保持部及び下流側基板保持部を有し、
前記第四工程は、前記上流側基板保持部に保持された前記基板の前記補強位置に前記熱硬化性樹脂を塗布する工程であり、
前記第五工程は、前記上流側基板保持部から搬送され、前記下流側基板保持部に保持された前記基板の前記第2搭載領域に前記第2電子部品を搭載する工程である、請求項5記載の電子部品実装方法。 - 前記上流側基板保持部に保持された前記基板の前記補強位置に前記熱硬化性樹脂を塗布する間に、前記下流側基板保持部に保持された別の前記基板の前記第2搭載領域に前記第2電子部品を搭載することにより、前記第四工程及び前記第五工程を並行して行う、請求項6記載の電子部品実装方法。
- 前記第2電子部品搭載装置が、フラックスの塗膜を形成する転写ユニットを有し、
前記第五工程において、前記第2電子部品を前記第2搭載領域に搭載する前に、前記第2電子部品の前記複数のはんだバンプを前記フラックスの塗膜に接触させて、前記はんだバンプにフラックスを転写する、請求項5~7のいずれか1項記載の電子部品実装方法。
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KR102436660B1 (ko) * | 2016-12-05 | 2022-08-26 | 한화정밀기계 주식회사 | 전자 부품 실장 시스템 |
Also Published As
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CN103340029A (zh) | 2013-10-02 |
JPWO2013094098A1 (ja) | 2015-04-27 |
JP5519866B2 (ja) | 2014-06-11 |
CN103340029B (zh) | 2016-02-24 |
KR20140102597A (ko) | 2014-08-22 |
US20140073088A1 (en) | 2014-03-13 |
US8673685B1 (en) | 2014-03-18 |
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