WO2011090031A1 - はんだ粉末付着装置および電子回路基板に対するはんだ粉末の付着方法 - Google Patents
はんだ粉末付着装置および電子回路基板に対するはんだ粉末の付着方法 Download PDFInfo
- Publication number
- WO2011090031A1 WO2011090031A1 PCT/JP2011/050769 JP2011050769W WO2011090031A1 WO 2011090031 A1 WO2011090031 A1 WO 2011090031A1 JP 2011050769 W JP2011050769 W JP 2011050769W WO 2011090031 A1 WO2011090031 A1 WO 2011090031A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- solder powder
- container
- electronic circuit
- circuit board
- adhering
- Prior art date
Links
- 229910000679 solder Inorganic materials 0.000 title claims abstract description 236
- 239000000843 powder Substances 0.000 title claims abstract description 207
- 238000000034 method Methods 0.000 title claims abstract description 75
- 239000000758 substrate Substances 0.000 claims abstract description 46
- 230000007246 mechanism Effects 0.000 claims abstract description 37
- 239000000853 adhesive Substances 0.000 claims description 29
- 230000001070 adhesive effect Effects 0.000 claims description 29
- 239000002245 particle Substances 0.000 claims description 11
- 239000011261 inert gas Substances 0.000 claims description 4
- 230000008569 process Effects 0.000 description 20
- 150000001875 compounds Chemical class 0.000 description 18
- 239000000725 suspension Substances 0.000 description 13
- 239000002184 metal Substances 0.000 description 11
- 229910052751 metal Inorganic materials 0.000 description 11
- 239000000243 solution Substances 0.000 description 11
- 125000004432 carbon atom Chemical group C* 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 9
- 239000012790 adhesive layer Substances 0.000 description 8
- 125000000217 alkyl group Chemical group 0.000 description 7
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- 125000003545 alkoxy group Chemical group 0.000 description 6
- 125000003277 amino group Chemical group 0.000 description 6
- 239000004020 conductor Substances 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 125000004093 cyano group Chemical group *C#N 0.000 description 6
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 239000004033 plastic Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- -1 benzothiazole thio fatty acids Chemical class 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 5
- 239000000919 ceramic Substances 0.000 description 5
- 238000007796 conventional method Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- HYZJCKYKOHLVJF-UHFFFAOYSA-N 1H-benzimidazole Chemical class C1=CC=C2NC=NC2=C1 HYZJCKYKOHLVJF-UHFFFAOYSA-N 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 230000002776 aggregation Effects 0.000 description 4
- 238000004220 aggregation Methods 0.000 description 4
- 125000003354 benzotriazolyl group Chemical class N1N=NC2=C1C=CC=C2* 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- IOJUPLGTWVMSFF-UHFFFAOYSA-N cyclobenzothiazole Natural products C1=CC=C2SC=NC2=C1 IOJUPLGTWVMSFF-UHFFFAOYSA-N 0.000 description 4
- 235000014113 dietary fatty acids Nutrition 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229930195729 fatty acid Natural products 0.000 description 4
- 239000000194 fatty acid Substances 0.000 description 4
- 239000010931 gold Substances 0.000 description 4
- 150000002460 imidazoles Chemical class 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 229910052709 silver Inorganic materials 0.000 description 4
- 238000007711 solidification Methods 0.000 description 4
- 230000008023 solidification Effects 0.000 description 4
- YTZPUTADNGREHA-UHFFFAOYSA-N 2h-benzo[e]benzotriazole Chemical class C1=CC2=CC=CC=C2C2=NNN=C21 YTZPUTADNGREHA-UHFFFAOYSA-N 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229940079865 intestinal antiinfectives imidazole derivative Drugs 0.000 description 3
- 229910017518 Cu Zn Inorganic materials 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- 229910017752 Cu-Zn Inorganic materials 0.000 description 2
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 2
- 229910017943 Cu—Zn Inorganic materials 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 2
- 229910017910 Sb—Zn Inorganic materials 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 235000011054 acetic acid Nutrition 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 239000012190 activator Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910052797 bismuth Inorganic materials 0.000 description 2
- 229910001431 copper ion Inorganic materials 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 230000009191 jumping Effects 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 229910052718 tin Inorganic materials 0.000 description 2
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 description 1
- YXIWHUQXZSMYRE-UHFFFAOYSA-N 1,3-benzothiazole-2-thiol Chemical class C1=CC=C2SC(S)=NC2=C1 YXIWHUQXZSMYRE-UHFFFAOYSA-N 0.000 description 1
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- 229910017944 Ag—Cu Inorganic materials 0.000 description 1
- 229910016331 Bi—Ag Inorganic materials 0.000 description 1
- 229910017770 Cu—Ag Inorganic materials 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 229910020159 Pb—Cd Inorganic materials 0.000 description 1
- 229910017802 Sb—Ag Inorganic materials 0.000 description 1
- 229910020816 Sn Pb Inorganic materials 0.000 description 1
- 229910020836 Sn-Ag Inorganic materials 0.000 description 1
- 229910020830 Sn-Bi Inorganic materials 0.000 description 1
- 229910020922 Sn-Pb Inorganic materials 0.000 description 1
- 229910020935 Sn-Sb Inorganic materials 0.000 description 1
- 229910020994 Sn-Zn Inorganic materials 0.000 description 1
- 229910020988 Sn—Ag Inorganic materials 0.000 description 1
- 229910018726 Sn—Ag—Sb Inorganic materials 0.000 description 1
- 229910018731 Sn—Au Inorganic materials 0.000 description 1
- 229910018728 Sn—Bi Inorganic materials 0.000 description 1
- 229910018956 Sn—In Inorganic materials 0.000 description 1
- 229910008783 Sn—Pb Inorganic materials 0.000 description 1
- 229910008757 Sn—Sb Inorganic materials 0.000 description 1
- 229910009069 Sn—Zn Inorganic materials 0.000 description 1
- 229910009071 Sn—Zn—Bi Inorganic materials 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- DKAGJZJALZXOOV-UHFFFAOYSA-N hydrate;hydrochloride Chemical compound O.Cl DKAGJZJALZXOOV-UHFFFAOYSA-N 0.000 description 1
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 239000001630 malic acid Substances 0.000 description 1
- 235000011090 malic acid Nutrition 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 235000019260 propionic acid Nutrition 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
Images
Classifications
-
- 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
- H05K3/3457—Solder materials or compositions; Methods of application thereof
- H05K3/3478—Applying solder preforms; Transferring prefabricated solder patterns
-
- 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
- B23K1/0016—Brazing of electronic components
-
- 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
-
- 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
-
- 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
- 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
- H05K2203/02—Details related to mechanical or acoustic processing, e.g. drilling, punching, cutting, using ultrasound
- H05K2203/0292—Using vibration, e.g. during soldering or screen printing
-
- 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
- H05K2203/04—Soldering or other types of metallurgic bonding
- H05K2203/0425—Solder powder or solder coated metal powder
-
- 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
- H05K2203/15—Position of the PCB during processing
- H05K2203/1527—Obliquely held PCB
-
- 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
- H05K2203/15—Position of the PCB during processing
- H05K2203/1554—Rotating or turning the PCB in a continuous manner
Definitions
- the present invention relates to a solder powder attaching apparatus for finely attaching solder powder to an electronic circuit board and a method for attaching the solder powder to the electronic circuit board.
- an electronic circuit board in which an electronic circuit pattern is formed on an insulating substrate such as an electronic circuit board, a plastic substrate (including a film), a ceramic substrate, or a metal substrate coated with plastic has been developed. Accordingly, means for forming an electronic circuit by soldering electronic components such as an IC element, a semiconductor chip, a resistor, and a capacitor on the circuit pattern is widely adopted.
- the lead terminals of the electronic component must be bonded in advance to a predetermined conductive circuit electrode surface portion of the circuit pattern.
- a method of printing a solder paste or flux after forming a solder thin layer in advance on the surface of a conductive circuit electrode on an electronic circuit board is known. Thereafter, the lead terminal is soldered to the surface portion of the conductive circuit electrode by performing positioning and reflow on a predetermined electronic component.
- a method of forming a solder circuit made of a solder film on an electronic circuit board for example, a plating method, a HAL (hot air leveler) method, a method of reflowing after printing a solder powder paste, etc. are known. ing.
- a plating method for example, a plating method, a HAL (hot air leveler) method, a method of reflowing after printing a solder powder paste, etc.
- HAL hot air leveler
- solder paste printing are difficult to cope with the fine pitch pattern.
- Patent Document 1 As a solder circuit forming method capable of supporting a fine pitch pattern, a method using a tackifying compound is known (Patent Document 1). This imparts tackiness to the surface of the conductive circuit electrode by reacting the tackifier compound with the electronic circuit board. Thereby, solder powder can be made to adhere only to the surface of the conductive circuit electrode. Thereafter, by heating the electronic circuit board, a fine solder circuit can be formed. According to this method, it is possible to form a fine solder circuit without requiring troublesome operations such as alignment of circuit patterns.
- a method using a tackifier compound a method in which a solder powder and an electronic circuit board are placed in a tank having a rotation / vibration mechanism and rotated is known.
- the electronic circuit board is buried in the solder powder by rotating the tank with the rotating shaft provided at the center of the tank. Further, by making the rotation axis of the tank substantially parallel to the surface of the electronic circuit board, the solder powder flows between the electronic circuit boards, and each electronic circuit board is evenly buried. Then, a solder powder adheres to the adhesion part of an electronic circuit board by vibrating a tank with a rotating shaft (patent document 2).
- solder powder is attached to the adhesive part of an electronic circuit board and then immersed in a liquid to which vibration is applied (Patent Document 4). Thereby, the solder powder adhering to an unnecessary location can be removed. Therefore, it is possible to prevent a short circuit between adjacent circuit patterns.
- solder powder having a particle size of about 10 ⁇ m the solder powders tend to aggregate due to static electricity. Therefore, even if the container is tilted or rotated, the solder powder moves while agglomerating, and the adhesion to the electronic circuit board becomes insufficient. Moreover, since solder powder aggregates, it does not spread evenly to a fine part and adhesion to the adhesion part of the back surface of an electronic circuit board becomes inadequate.
- the frictional force between the particles increases because the particle diameter of the powder is too small. Therefore, the solder suspension is easily solidified, and even if the container is tilted or rotated, the movement is not sufficiently performed. Moreover, since the surface of the electronic circuit board is moved in the solidified state, the adhesion of the solder powder to the adhesive portion becomes insufficient.
- the solder powder tends to adhere to unnecessary portions of the electronic circuit board.
- the fine solder powder easily aggregates, excess solder powder easily adheres to the electronic circuit board.
- the solder dissolves between adjacent circuit patterns, so that a short circuit is likely to occur.
- the conventional method requires insufficient removal or requires another process. Therefore, it has been difficult to efficiently prevent a short circuit.
- the present invention has been made in view of the above problems, and an electronic circuit board having a fine fine pitch pattern is provided with a solder powder adhering device for finely adhering solder powder and a method for adhering solder powder to an electronic circuit board.
- the issue is to provide.
- a container for storing an electronic circuit board and solder powder a board holding part that is provided in the container and holds the electronic circuit board so that a board surface thereof is substantially directed in the vertical direction, and an initial position of the container Is tilted in the first direction, the container is tilted from the initial position in a second direction opposite to the first direction, and then the container is tilted again in the first direction.
- a tilting mechanism an eccentric motor that is provided at the center of the bottom portion to vibrate the bottom portion of the container by rotating the rotating shaft, and the rotational axis of the eccentric motor is the same direction as the tilting direction of the container
- a vibration mechanism comprising a control means for setting to a solder powder adhering device.
- solder powder adhering device according to any one of [1] to [7], wherein the support portion is made of an elastic body.
- the container is provided with a lid and has a sealed space inside the container.
- solder powder attaching method for attaching solder powder to an adhesive part of an electronic circuit board the solder powder is disposed on one side inside the container, and the electronic circuit board is placed on the board holding part inside the container.
- a second step of tilting the container again in the first direction and a solder powder adhering method characterized by comprising: [11] The adhesion of the solder powder according to [10], wherein in the second step, the tilting in the first direction is performed at an inclination angle larger than the tilting in the second direction. Method. [12] Solder powder adhesion according to [10] or [11], wherein in the first step and the second step, a plurality of the eccentric motors are used and all of them are rotated in the same direction. Method. [13] The solder powder according to any one of [10] to [12], wherein in the first step and the second step, the tilt angle is controlled to an arbitrary value by the tilt mechanism. Adhesion method.
- the amplitude and frequency of the eccentric motor are controlled to arbitrary values by a control means.
- solder powder according to any one of [10] to [16], wherein the solder powder has a particle size in the range of 4 ⁇ m to 20 ⁇ m.
- solder powder has a particle size in the range of 5 ⁇ m to 10 ⁇ m.
- the container containing the solder powder and the electronic circuit board can be tilted at an arbitrary inclination angle.
- the control means of the eccentric motor is interlocked with the tilting mechanism, the rotation direction of the rotating shaft of the eccentric motor can be the same direction as the tilting direction of the container.
- a vibration can be given with a perpendicular
- the solder powder spreads evenly to the fine part, and can sufficiently adhere to the surface of the electronic circuit board between the bottom part of the container.
- the solder powder is pushed up from the bottom and behaves as if it jumps up.
- the solder powder collides with the electronic circuit board at a vertical angle and effectively adheres to the adhesive portion.
- it is unnecessary to incline in the direction of the first direction at an inclination angle larger than the inclination in the second direction. It is possible to efficiently remove the solder powder adhering to the location and the excess solder powder.
- an electronic circuit board having a fine fine pitch pattern can be efficiently manufactured. Further, a short circuit due to molten solder can be effectively prevented between adjacent circuit patterns. As a result, the reliability of the electronic circuit board can be improved, and the electronic circuit board can be downsized. Thereby, an electronic device having excellent characteristics can be provided.
- the solder powder adhering apparatus 100 is generally configured by a container 1, a substrate holding unit (not shown) for holding the electronic circuit board 10, a vibration mechanism 3, and a tilting mechanism 4.
- a container 1 a substrate holding unit for holding the electronic circuit board 10
- a vibration mechanism 3 a vibration mechanism 4
- a tilting mechanism 4 a tilting mechanism 4.
- a lid 1b is provided on the upper portion of the container 1, and a closed space is formed inside the container 1 and the lid 1b by fitting them.
- the lid 1b can be opened and closed, and the solder powder 20 can be accommodated inside the container 1 through the opening.
- the container 1 has a substrate holding portion, which will be described later, disposed therein, and can accommodate the electronic circuit board 10.
- an eccentric motor 3a described later is provided at a position corresponding to the center of the bottom 1a outside the container 1.
- the substrate holding part is provided in the container 1 and any existing one may be used as long as it has a configuration that can hold the plurality of electronic circuit boards 10 so that the substrate surfaces thereof face substantially in the vertical direction. . Moreover, it is still more preferable if it is the structure hold
- FIG. 1A shows an electronic circuit board 10 with the upper substrate surface (one surface side 10a) facing the lid 1b side of the container 1 and the other surface side 10b facing the bottom 1a side.
- the electronic circuit board 10 is held between the other surface side 10 b and the bottom portion 1 a of the container 1 with a space therebetween.
- the electronic circuit board 10 is arranged such that the lower substrate surface (other surface side 10 b) is parallel to the bottom 1 a of the container 1.
- the electronic circuit boards 10 are arranged in parallel with each other and at a constant interval.
- the electronic circuit board 10 which is the object of the present invention has, for example, a strip-like configuration, and the material thereof is a metal plate on a plastic substrate, a plastic film substrate, a glass cloth substrate, a paper substrate epoxy resin substrate, a ceramic substrate, or the like.
- Single-sided circuit board, double-sided circuit board, multilayer circuit board, or flexible circuit board in which a circuit pattern is formed using a conductive material such as metal on a laminated substrate or an insulating substrate with a metal base coated with plastic or ceramics Etc. can be used.
- an IC substrate, a capacitor, a resistor, a coil, a varistor, a bare chip, a wafer, and the like can be applied.
- a circuit pattern (not shown) made of, for example, copper or a copper alloy is formed on the surface (one surface side 10a, the other surface side 10b) of the electronic circuit board 10.
- the conductive material forming the circuit pattern is not limited to these, and other materials may be used as long as they are conductive materials whose surface can be obtained with a tackifier that will be described later. Examples of such a conductive substance include a substance containing Ni, Sn, Ni—Au, flash gold, Pd, Ag solder alloy, and the like.
- an adhesive portion (not shown) for attaching the solder powder 20 is formed on the surface of the circuit pattern.
- This pressure-sensitive adhesive part is formed by reacting a later-described tackifier compound with the circuit pattern part.
- tackifying compounds it is possible to use naphthotriazole derivatives, benzotriazole derivatives, imidazole derivatives, benzoimidazole derivatives, mercaptobenzothioazole derivatives, benzothiazole thio fatty acids, etc. it can. These tackifying compounds have a particularly strong effect on copper, but can also provide tackiness to other conductive substances.
- the vibration mechanism 3 includes an eccentric motor 3a and a control means 3b.
- the eccentric motor 3a is provided outside the container 1 and at a position corresponding to the center of the bottom 1a. Further, the rotation direction, amplitude and frequency of the rotation shaft of the eccentric motor 3a are controlled by the control means 3b which will be described later.
- the rotation axis of the eccentric motor 3a is controlled by the control means 3b so as to rotate in the same direction as the tilting direction of the container 1, and the rotation direction is also changed according to the tilting direction of the container 1. Is done.
- one eccentric motor 3a may be provided outside the container 1 and at a position corresponding to the center of the bottom 1a, but a plurality of eccentric motors 3a may be provided. In this case, it is preferable that all the eccentric motors 3a are controlled by the control means 3b so as to rotate in the same direction. In addition, it is preferable that the plurality of eccentric motors 3a are arranged at positions corresponding to directly below the substrate holding portion and at equal intervals. As a result, the plurality of eccentric motors 3a can vibrate evenly and at an angle perpendicular to the bottom 1a.
- Control means 3b is a means for controlling the rotation direction, amplitude and frequency of the eccentric motor 3a.
- the control means 3b is interlocked with a tilting mechanism 4 described later, and controls the rotation direction of the rotation shaft of the eccentric motor 3a according to the tilting of the container 1. Thereby, the rotation shaft of the eccentric motor 3a is controlled to rotate in the same direction as the tilting direction of the container 1. As a result, the eccentric motor 3a is configured to vibrate at a perpendicular angle with respect to the bottom 1a of the container 1.
- the amplitude and frequency of the rotation shaft of the eccentric motor 3a can be arbitrarily set according to the state of the solder powder 20, and the settable frequency may be in the range of 50 Hz to 60 Hz.
- the range of 0.5 Hz to 100 kHz is preferable. If the frequency is less than 0.5 Hz, the effect of vibration cannot be obtained, and if it exceeds 100 kHz, the amplitude becomes small, which makes it difficult to move the solder powder 20, which is not preferable.
- tilt mechanism 4 As shown in FIG. 1A, the tilting mechanism 4 is provided outside the container 1.
- the tilting mechanism 4 is composed of, for example, a tilting shaft 4a, a tilting means 4b, and a tilting plate 4c.
- the tilting plate 4c is configured to be connected to the container 1 by a support portion 2 described later.
- the configuration of the tilting mechanism 4 is not limited to that shown here, and other configurations may be used as long as the container 1 can tilt.
- the tilting mechanism 4 shown here is provided outside and below the container 1 and is connected to the container 1 via a support part 2 described later.
- the tilting means 4b includes, for example, a drive motor (not shown) and is configured to rotate the tilting shaft 4a. Since the tilt shaft 4a and the tilt plate 4c are connected, the tilt plate 4c is tilted by the rotation of the tilt shaft 4a. Thereby, the tilting plate 4c tilts in the first direction A or the second direction B at an arbitrary tilt angle set by the tilting means 4b. Further, the tilting plate 4 c is connected to the container 1 via the support portion 2. Therefore, the container 1 is configured to be interlocked with the tilting of the tilting plate 4c.
- the support part 2 is comprised by elastic bodies, such as a spring, for example.
- the support portion 2 made of an elastic body can expand and contract in response to the weight when the container 1 is tilted. Therefore, the flow of the solder powder 20 and the collision of the solder powder 20 into the container 1 in the tilting process can be reduced.
- the support part 2 is not restricted to a spring, The weight of the container 1 can be supported, and if it is an elastic body, you may be comprised from another thing.
- the arrangement of the support portion 2 is not particularly limited, but it is preferable that at least both ends of the bottom portion 1a of the container 1 are supported and that they are arranged at equal intervals. With these configurations, the tilting mechanism 4 can tilt the container 1 at an arbitrary tilt angle. Further, the tilt angle can be arbitrarily set according to the tilt direction.
- the solder powder adhering apparatus 100 of the present embodiment can tilt the container 1 containing the solder powder 20 and the electronic circuit board 10 at an arbitrary inclination angle. Further, since the control means 3 b of the eccentric motor 3 a is interlocked with the tilt mechanism 4, the rotation direction of the eccentric motor 3 a can be the same as the tilt direction of the container 1. Thereby, according to tilting of the container 1, a vibration can be given at an angle perpendicular to the bottom 1a.
- solder powder adhering apparatus 100 of the present embodiment even when the solder powder 20 is fine, aggregation at the time of dry adhesion to the electronic circuit board 10 can be prevented. Moreover, solidification of the suspension (solder suspension) of the solder powder 20 is prevented during wet adhesion. That is, by using the solder powder adhering apparatus 100 of the present embodiment, the solder powder 20 can flow in the container 1 in accordance with the tilt of the container 1. Thereby, the solder powder 20 is uniformly distributed to the fine part, and is also distributed between the other surface side 10b of the electronic circuit board 10 and the bottom 1a of the container 1. Therefore, the solder powder 20 can be sufficiently adhered to the adhesive portion on the other surface side 10b.
- the eccentric motor 3a of the present embodiment is configured to apply vibration at a vertical angle directly below the electronic circuit board 10. Therefore, the solder powder 20 is pushed up from the bottom and behaves so as to jump up. Thereby, the solder powder 20 collides with the electronic circuit board 10 at a vertical angle and effectively adheres to the adhesive portion. In addition, after the solder powder 20 is attached, it is tilted in the opposite direction at a larger inclination angle than that when the solder powder 20 is attached, and the eccentric motor 3a is reversed to apply vibrations, thereby adding extra portions. The adhered solder powder 20 and excess solder powder 20 can be efficiently removed.
- solder powder adhering apparatus 100 of the present embodiment even the fine solder powder 20 can be easily fluidized and uniformly adhered to the adhesive portion of the electronic circuit board 10.
- another process for removing the solder powder 20 is not necessary, and the number of inclinations can be reduced.
- the solder powder 20 only needs to reciprocate at least once in the container 1, and the process can be simplified as compared with the conventional method.
- the solder powder adhesion apparatus 100 of this embodiment can be horizontally arranged, the process can be automated.
- the electronic circuit board 10 having a fine fine pitch pattern can be efficiently manufactured. Further, a short circuit due to molten solder can be effectively prevented between adjacent circuit patterns. Therefore, the reliability of the electronic circuit board 10 can be improved, and the electronic circuit board 10 can be downsized. Therefore, it is possible to provide an electronic device having excellent characteristics.
- the method for adhering the solder powder 20 to the electronic circuit board 10 of the present embodiment includes a step of applying a tackifier compound to the surface of the terminal on the electronic circuit board 10 to form an adhesive layer, and one side inside the container 1.
- the second step of moving from the second direction B inside the container 1 to the first direction A is schematically configured.
- the structure illustrated in the following description is an example, Comprising: This invention is not limited to them, It can change suitably in the range which does not change the summary.
- the preparation step further includes a step of applying a tackifier compound to the surface of the terminal on the electronic circuit board 10 to form an adhesive layer, a step of placing the solder powder 20 at a predetermined position inside the container 1, and an inside of the container 1
- the process generally comprises a step of holding the electronic circuit board 10 on the board holding portion at a position facing the solder powder 20. Details of each configuration will be described below.
- the electronic circuit board 10 which is the object of the present invention has, for example, a strip-like configuration, and the material thereof is a metal plate on a plastic substrate, a plastic film substrate, a glass cloth substrate, a paper substrate epoxy resin substrate, a ceramic substrate, or the like.
- Single-sided circuit board, double-sided circuit board, multilayer circuit board, or flexible circuit board in which a circuit pattern is formed using a conductive material such as metal on a laminated substrate or an insulating substrate with a metal base coated with plastic or ceramics Etc. can be used.
- an IC substrate, a capacitor, a resistor, a coil, a varistor, a bare chip, a wafer, and the like can be applied.
- a circuit pattern (not shown) made of, for example, copper or a copper alloy is formed on the surface (one surface side 10a, the other surface side 10b) of the electronic circuit board 10.
- the conductive material forming the circuit pattern is not limited to these, and other materials may be used as long as they are conductive materials whose surface can be obtained with a tackifier that will be described later. Examples of these metals include substances including Ni, Sn, Ni—Au, flash gold, Pd, Ag solder alloy, and the like.
- an adhesive layer is formed on the surface of a conductive circuit electrode (not shown) of the electronic circuit board 10.
- a conductive circuit electrode (not shown) of the electronic circuit board 10.
- the tackifying compounds shown below are dissolved in water or acidic water to prepare a pressure-sensitive adhesive solution adjusted to be slightly acidic.
- the hydrogen ion concentration index of the adhesive solution is preferably about pH 3-4.
- the electronic circuit board 10 is immersed in the adhesive solution, or the adhesive solution is applied to the electronic circuit board 10. Thereby, an adhesive layer is formed on the circuit pattern of the electronic circuit board 10.
- tackifier compound naphthotriazole derivatives, benzotriazole derivatives, imidazole derivatives, benzoimidazole derivatives, mercaptobenzothioazole derivatives, benzothiazole thio fatty acids, etc. may be used. it can.
- tackifying compounds have a particularly strong effect on copper, but can also provide tackiness to other conductive substances.
- a benzotriazole derivative represented by the general formula (1) can be preferably used.
- R1 to R4 in the formula (1) are independently hydrogen atoms, alkyl groups having 1 to 16 carbon atoms (preferably 5 to 16), alkoxy groups, F, Br, Cl, I, cyano groups, amino groups Group or OH group.
- a naphthotriazole derivative represented by the general formula (2) can be preferably used.
- R5 to R10 in the formula (2) are independently hydrogen atoms, alkyl groups having 1 to 16 carbon atoms (preferably 5 to 16), alkoxy groups, F, Br, Cl, I, cyano groups, amino groups Group or OH group.
- an imidazole derivative represented by the general formula (3) can be preferably used.
- R11 and R12 in the formula (3) are each independently a hydrogen atom, an alkyl group having 1 to 16 carbon atoms (preferably 5 to 16), an alkoxy group, F, Br, Cl, I, a cyano group, amino Group or OH group.
- a benzoimidazole derivative represented by the general formula (4) can be preferably used.
- R13 to R17 in the formula (4) are independently hydrogen atoms, alkyl groups having 1 to 16 carbon atoms (preferably 5 to 16), alkoxy groups, F, Br, Cl, I, cyano groups, amino groups Group or OH group.
- a mercaptobenzothiazole derivative represented by the general formula (5) can be preferably used.
- R18 to R21 in the formula (5) are independently hydrogen atoms, alkyl groups having 1 to 16 carbon atoms (preferably 5 to 16), alkoxy groups, F, Br, Cl, I, cyano groups, amino groups Group or OH group.
- a benzothiazole thio fatty acid derivative represented by the general formula (6) can be preferably used.
- R22 to R26 in the formula (4) are independently hydrogen atoms, alkyl groups having 1 to 16 carbon atoms (preferably 1 or 2), alkoxy groups, F, Br, Cl, I, cyano groups, amino groups Group or OH group.
- R22 to R26 preferably have 1 or 2 carbon atoms.
- examples of the substance used for adjusting the pH of the adhesive solution include inorganic acids such as hydrochloric acid, sulfuric acid, nitric acid, and phosphoric acid.
- organic acid formic acid, lactic acid, acetic acid, propionic acid, malic acid, oxalic acid, malonic acid, succinic acid, tartaric acid and the like can be used.
- the concentration of the tackifier compound in the adhesive solution is not particularly limited, and may be appropriately adjusted according to solubility and use conditions. At this time, the concentration of the tackifying compound is preferably in the range of 0.05% by mass to 20% by mass as a whole. On the other hand, if the concentration is lower than 0.05% by mass, the tackifier compound is not preferable because sufficient tackiness cannot be imparted.
- the treatment temperature for attaching the adhesive solution to the conductive circuit electrode is slightly higher than room temperature. This is because the formation speed and the formation amount of the adhesive layer become sufficient values.
- the optimum processing temperature varies depending on the concentration of the tackifier compound and the type of metal constituting the conductive circuit electrode, but generally it is preferably in the range of 30 ° C to 60 ° C. It is.
- the immersion time in the adhesive solution is preferably in the range of about 5 seconds to 5 minutes. Therefore, it is preferable to adjust other conditions so that the immersion time is within this range.
- solder powder 20 (Process of arranging the solder powder 20 inside the container 1) Next, the container 1 is tilted in the first direction A to open the lid 1b, and the solder powder 20 is disposed as shown in FIG. 1A.
- the metal composition of the solder powder 20 include Sn—Pb, Sn—Pb—Ag, Sn—Pb—Bi, Sn—Pb—Bi—Ag, and Sn—Pb—Cd. . Further, from the viewpoint of eliminating Pb in recent industrial wastes, Sn—In, Sn—Bi, In—Ag, In—Bi, Sn—Zn, Sn—Ag, Sn—, which does not contain Pb, are included.
- 62Sn / 36Pb / 2Ag, 62.6Sn / 37Pb centering on eutectic solder hereinafter referred to as 63Sn / 37Pb
- 63Sn / 37Pb eutectic solder
- solder powder 20 used in the present invention a mixture of two or more kinds of solder powders having different compositions may be used.
- the particle size of the solder powder 20 is preferably in the range of 4 ⁇ m to 20 ⁇ m, and particularly preferably in the range of 5 ⁇ m to 10 ⁇ m.
- the particle size of the solder powder 20 is not particularly limited to this value, and may be larger than this value.
- the solder powder 20 is disposed on the first direction A side inside the container 1. At this time, it is preferable that the solder powder 20 does not come into contact with the substrate holding part.
- the lid 1b is opened every time the solder powder 20 is attached to the electronic circuit board 10, and the solder powder 20 and the electronic circuit board 10 are taken into and out of the container 1 from there.
- the solder powder 20 when the solder powder 20 is attached by a wet method, the solder powder 20 is added after the container 1 is tilted and a dispersion liquid such as water is put into the container 1. Thereby, the solder powder 20 is dispersed in the dispersion to become a solder suspension. In the present embodiment, it is preferable to put the solder powder 20 in the container 1 before the electronic circuit board 10. Thereby, even if the lid 1b is opened and closed in the step of holding the electronic circuit board 10 in the board holding portion described later, the scattering of the solder powder 20 is suppressed.
- the electronic circuit board 10 is held by a board holding unit (not shown).
- this substrate holding part is provided in the container 1 and is configured to be able to hold the plurality of electronic circuit boards 10 from the bottom 1a of the container 1 and to hold the substrate surface substantially vertically, An existing one may be used. Further, in such a substrate holding portion, it is preferable to use a small portion such as a protrusion or a pin that does not cause a major obstacle when the electronic circuit board 10 is inserted.
- the other surface side 10b of the electronic circuit board 10 is held in parallel with the bottom 1a of the container 1 and with a gap between the bottom 1a. Is done.
- the substrate surface on the lid 1b side of the electronic circuit board 10 is defined as one surface side 10a, and the substrate surface on the bottom 1a side is defined as the other surface side 10b.
- the electronic circuit board 10 becomes a structure arrange
- the solder powder 20 is stored in the lower part of the container 1 and is arranged away from the lid 1 b. For this reason, when the lid 1b is opened and closed, scattering of the solder powder 20 to the outside is suppressed. Thereafter, the lid 1b is closed, and the sealed space inside the container 1 is filled with an inert gas such as N 2 . Further, the lid 1b remains closed until the electronic circuit board 10 is taken out in the subsequent process. This is to prevent the solder powder 20 from being oxidized by leaving the interior of the container 1 filled with an inert gas.
- FIGS. 1A to 1D the solder powder 20 is moved from the first direction A side inside the container 1 to the second direction B side.
- FIG. 1A shows a state in which the solder powder 20 or the solder suspension and the electronic circuit board 10 are arranged inside the container 1.
- a vibration mechanism 3 including an eccentric motor 3a and a control means 3b is provided outside the container 1, and at least the eccentric motor 3a is provided at a position corresponding to the center of the bottom 1a.
- the rotation direction, amplitude and frequency of the rotation shaft of the eccentric motor 3a are controlled by the control means 3b.
- the rotation axis of the eccentric motor 3a is controlled to rotate in the same direction as the tilt direction of the container 1, and the rotation direction is also changed according to the change of the tilt direction.
- a tilting mechanism 4 including a tilting shaft 4a, a tilting means 4b, and a tilting plate 4c is provided outside the container 1, and the container 1 is tilted via a support portion 2 described later. Further, the tilting means 4b can arbitrarily set the tilt angle.
- the container 1 is tilted from the horizontal direction from the first direction A side to the second direction B side, for example, at an angle of 5 °.
- the tilting shaft 4a is rotated by, for example, a drive motor (not shown) of the tilting means 4b.
- the tilting plate 4c joined to the tilting shaft 4a tilts toward the second direction B side.
- the tilting plate 4c can be tilted at an arbitrary tilt angle set by the tilting means 4b.
- the container 1 is connected with the tilting plate 4c by the support part 2 which consists of elastic bodies, such as a spring, for example. Thereby, the container 1 tilts in conjunction with the tilting plate 4c.
- the support part 2 is not restricted to a spring, The weight of the container 1 can be supported, and if it is an elastic body, you may be comprised from another thing.
- the arrangement of the support portion 2 is not particularly limited, but it is preferable that at least both ends of the bottom portion 1a of the container 1 are supported and that they are arranged at equal intervals.
- the vibration mechanism 3 including the eccentric motor 3a and the control means 3b vibrates the bottom 1a of the container 1.
- the control means 3b is interlocked with a tilting mechanism 4 described later, and is configured to control the rotation direction of the rotating shaft of the eccentric motor 3a according to the tilting of the container 1.
- the rotation axis of the eccentric motor 3a is controlled by the control means 3b so as to rotate in the same direction as the tilting direction of the container 1.
- the rotational axis of the eccentric motor 3a changes its rotational direction in accordance with the tilting direction of the container 1, and always vibrates at a perpendicular angle with respect to the bottom 1a.
- the solder powder 20 is pushed up from below and behaves so as to jump up. Thereby, aggregation of the solder powder 20 is prevented, and the solder powder 20 can move as the container 1 tilts. As a result, the solder powder 20 is evenly distributed to the fine part, so that it is also distributed between the other surface side 10 b of the electronic circuit board 10 and the bottom 1 a of the container 1. Therefore, the solder powder 20 can be sufficiently adhered to the adhesive portion on the other surface side 10b. Further, since the solder powder 20 is pushed up from below and behaves so as to jump up, it collides with the electronic circuit board 10 at a vertical angle and effectively adheres to the adhesive portion.
- the solder powder 20 when using the solder suspension, the solder powder 20 is pushed up from the bottom and behaves as if it jumps up, so that solidification of the solder suspension is prevented. Therefore, the solder suspension liquefies and flows to the fine part as the container 1 tilts. Moreover, since the solder powder 20 collides with the electronic circuit board 10 at a perpendicular angle, it effectively adheres to the adhesive portion.
- the amplitude and frequency of the rotating shaft of the eccentric motor 3a may be arbitrarily set according to the state of the solder powder 20.
- the frequency may be set in the range of 50 Hz to 60 Hz, but it is particularly preferable that the frequency can be set in the range of 0.5 Hz to 100 kHz. If the frequency is less than 0.5 Hz, the vibration effect cannot be obtained, and if it exceeds 100 kHz, movement of the solder powder 20 becomes difficult, which is not preferable.
- the solder powder 20 moves while contacting the surface of the electronic circuit board 10 and adheres to the adhesive portion.
- the frequency is set at an AC frequency of 50 Hz, for example.
- the eccentric motor 3a should just be provided in the position corresponding to the outer side of the container 1 and the bottom part 1a center, the structure provided with the several eccentric motor 3a may be sufficient. . In this case, it is preferable to control the eccentric motor 3a to rotate in the same direction by the control means 3b. In addition, it is preferable that the plurality of eccentric motors 3a are arranged at positions corresponding to directly below the substrate holding portion and at equal intervals. This is because the plurality of eccentric motors 3a can impart vibrations evenly and at an angle perpendicular to the bottom 1a.
- the solder powder 20 hits the side wall of the container 1 in the second direction B and ends its movement.
- the support part 2 expands and contracts in response to the weight when the container 1 is tilted, the flow of the solder powder 20 and the collision of the solder powder 20 into the container 1 can be reduced.
- FIGS. 2A to 2C the solder powder 20 is moved from the second direction B inside the container 1 to the first direction A.
- FIG. 2A shows a state after the first step, in which the solder powder 20 or the solder suspension and the electronic circuit board 10 are arranged on the second direction B side inside the container 1.
- the container 1 is tilted from the horizontal state toward the first direction A at an angle of 30 °, for example. This tilt is in the opposite direction to the tilt in the first step. Further, this tilting is preferably performed at a larger tilt angle than the tilting in the second direction B in the first step.
- the bottom 1 a of the container 1 is vibrated by the vibration mechanism 3.
- the rotating shaft of the eccentric motor 3a is rotated in the same direction as the second direction of the container 1 by the control means 3b.
- the first direction A is opposite to the second direction B.
- the eccentric motor 3a vibrates at an angle perpendicular to the bottom 1a.
- the solder powder 20 behaves so as to jump up and moves as the container 1 tilts as shown in FIG. 2B.
- the tilting of the container 1 is preferably performed at a larger tilt angle than the tilting of the container 1 in the first step.
- the solder powder 20 adhering to the extra portion and the excess solder powder 20 jump up by vibration and move in the container 1 in the first direction A.
- the solder powder 20 adhering to places other than the adhesion part can be effectively removed.
- the solder powder 20 can be effectively attached to the adhesive portion of the electronic circuit board 10, and the solder powder 20 attached to an extra portion can be removed.
- the first step and the second step may be performed at least once, but the number of times may be adjusted as appropriate according to the state of adhesion.
- the amplitude and frequency of the eccentric motor 3a may be arbitrarily set according to the moving state and the jumping state of the solder powder 20.
- An electronic circuit board is obtained by heating and fixing the solder powder 20, applying a flux to the electronic circuit board 10, and heating the electronic circuit board 10 to melt the solder powder 20. 10 is manufactured.
- the container 1 containing the solder powder 20 and the electronic circuit board 10 can be tilted at an arbitrary inclination angle. Further, the eccentric motor 3 a can be rotated in the same direction as the tilting direction of the container 1. Thereby, according to tilting of the container 1, a vibration can be given at an angle perpendicular to the bottom 1a.
- the solder powder 20 behaves so as to jump up. Therefore, even if it is the fine solder powder 20, the aggregation is prevented. Moreover, even if it is the suspension of the solder powder 20, the solidification is prevented. Therefore, according to this embodiment, the solder powder 20 can be uniformly distributed in the container 1 according to the tilt of the container 1 and can be caused to collide with the adhesive portion of the electronic circuit board 10 vertically. Therefore, in the first step, the solder powder 20 can be sufficiently adhered to the fine part of the adhesive portion including the other surface side 10b of the electronic circuit board 10. Further, in the second step, by tilting the container 1 with a larger inclination angle than in the first step, it is possible to efficiently remove the solder powder 20 adhering to an extra portion and the excess solder powder 20. Become.
- solder powder 20 Even the fine solder powder 20 can be uniformly attached to the adhesive portion of the electronic circuit board 10. In addition, another process for removing the solder powder 20 is not necessary, and the number of inclinations can be reduced. According to this method, the solder powder 20 only needs to reciprocate at least once in the container 1, and the process can be simplified as compared with the conventional method. Moreover, since the solder powder adhesion apparatus 100 of this embodiment can be horizontally arranged, the process by it can be automated.
- the electronic circuit board 10 having a fine fine pitch pattern can be efficiently manufactured. Further, a short circuit due to molten solder can be effectively prevented between adjacent circuit patterns. Therefore, the reliability of the electronic circuit board 10 can be improved, and the electronic circuit board 10 can be downsized. This makes it possible to provide an electronic device with excellent characteristics.
- Example 1 a strip-shaped electronic circuit board 10 having a width of 50 mm, a length of 200 mm, and a thickness of 0.4 mm was prepared. The minimum width of the electrodes of the electronic circuit board 10 was 20 ⁇ m, and the minimum distance between the electrodes was 20 ⁇ m. Next, the electronic circuit board 10 was pretreated with hydrochloric acid water.
- a 2% by mass aqueous solution of an imidazole compound in which the alkyl group of R12 in the general formula (3) is C 11 H 23 and R11 is a hydrogen atom is prepared as an adhesive solution containing the tackifier compound, and the pH thereof is adjusted with acetic acid.
- this adhesive solution was heated to 40 ° C., and the electronic circuit board 10 was immersed for 3 minutes. Thereby, the adhesive layer was formed in the electronic circuit of the one surface side 10a and the other surface side 10b of the electronic circuit board 10.
- the container 1 having an inner dimension of 200 mm in length, 120 mm in width, and 150 mm in height was tilted toward the first direction A to open the lid 1b.
- about 400 g of solder powder 20 having a composition of 96.5 Sn / 3.5 Ag and a particle size of 5 ⁇ m was disposed on the first direction A side in the container 1 from the opening of the lid 1 b.
- the solder powder 20 was not brought into contact with a substrate holding portion (not shown).
- 1600 ml of water was put into the container 1 to form a solder suspension of the solder powder 20.
- the solder powder adhering device 100 is prepared, and the one surface side 10a of the three electronic circuit boards 10 is directed upward (on the lid 1b side of the container 1) to the board holding part (not shown) and spaced from the bottom part 1a. It was made to hold by the composition which keeps. This state is shown in FIG. 1A.
- the tilting shaft 4a was driven by, for example, a driving motor (not shown) of the tilting means 4b.
- a driving motor not shown
- the container 1 tilted toward the second direction B from the horizontal state at an inclination angle of 5 °.
- the eccentric motor 3 a was rotated in the same direction as the tilting direction of the container 1.
- the bottom 1a was vibrated at a vertical angle from the outside.
- the frequency of the eccentric motor 3a at this time was set to an AC frequency of 50 Hz.
- the container 1 was tilted from the horizontal state to the first direction A side at an inclination angle of 5 °. Further, along with this, the eccentric motor 3 a was rotated in the tilting direction of the container 1. The tilting in the first direction A and the tilting in the second direction B were performed once. The period of these tilts was 10 seconds.
- the electronic circuit board 10 was taken out of the container 1 and lightly washed with pure water and then dried. Next, an activator was applied to both the one side 10a and the other side 10b of the electronic circuit board 10. Next, the electronic circuit board 10 was dried in air, placed in an oven heated to 240 ° C., and heated in air for 1 minute to melt the solder powder 20. Thereafter, the electronic circuit of the electronic circuit board 10 was confirmed, but no short circuit or dropout was observed.
- Example 1 The same method as in Example 1 was adopted except that the eccentric motor 3a was not rotated. However, as shown in FIG. 3, the solder powder 20 was not sufficiently diffused even when the container 1 was tilted. Thereafter, after the electronic circuit board 10 was manufactured and the electronic circuit was confirmed, short-circuiting and dropping were observed.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
Abstract
Description
本願は、2010年1月20日に、日本に出願された特願2010-010270号に基づき優先権を主張し、その内容をここに援用する。
この方法によれば、タンクの中心部に備え付けられた回転軸によりタンクを回転させることにより、電子回路基板ははんだ粉末内に埋没される。また、タンクの回転軸を電子回路基板表面とほぼ平行とすることにより、はんだ粉末は電子回路基板同士の間に流入し、各電子回路基板はまんべんなく埋没される。その後、回転軸によりタンクを振動させることで、電子回路基板の粘着部にはんだ粉末が付着する(特許文献2)。
たとえば、粒径10μm程度のはんだ粉末の付着を行うと、はんだ粉末同士が静電気により凝集しやすい。そのため、容器を傾動もしくは回転させても、はんだ粉末は凝集しながら移動し、電子回路基板への付着が不十分となる。また、はんだ粉末同士が凝集するため、微細部まで均一に行き渡らず、電子回路基板裏面の粘着部への付着が不十分となる。
また、湿式ではんだ粉末の付着を行うと、粉末の粒粒径が小さすぎるために粒子同士の摩擦力が大きくなる。そのため、はんだ懸濁液が固形化しやすくなり、容器を傾動もしくは回転させても移動が十分に行われない。また、固形化した状態のまま電子回路基板表面を移動するので、粘着部へのはんだ粉末の付着が不十分となる。
また、このような余分なはんだ粉末を除去するためには、従来の方法ではその除去が不十分、もしくは別の工程が必要となる。そのため、短絡を効率的に防ぐことが困難であった。
〔1〕 電子回路基板およびはんだ粉末を収容する容器と、前記容器内に備え付けられ、前記電子回路基板をその基板面がほぼ上下方向を向くように保持する基板保持部と、前記容器の初期位置を第一の方向に傾動させた傾斜位置とし、前記初期位置から前記第一の方向と反対の第二の方向に前記容器を傾動させてから、前記容器を前記第一の方向に再び傾動させる傾動機構と、回転軸を回転させることにより前記容器の底部に振動を与える、前記底部の中心に設けられた偏芯モーターと、前記偏芯モーターの前記回転軸を前記容器の傾動方向と同じ方向に設定する制御手段からなる振動機構と、を具備してなることを特徴とするはんだ粉末付着装置。
〔2〕 前記振動機構が、前記傾動機構が前記容器を傾動させる際に前記容器を振動させる機能を有することを特徴とする〔1〕に記載のはんだ粉末付着装置。
〔3〕 前記傾動機構が、傾動の角度を任意の値に制御するものであることを特徴とする〔1〕または〔2〕に記載のはんだ粉末付着装置。
〔4〕 前記制御手段が、前記偏芯モーターの振幅および周波数を任意の値に制御するものであることを特徴とする〔1〕乃至〔3〕のいずれか一項に記載のはんだ粉末付着装置。
〔5〕 前記周波数が0.5Hz~100kHzの範囲であることを特徴とする〔4〕に記載のはんだ粉末付着装置。
〔6〕 前記偏芯モーターが複数設けられ、全てが同じ方向に回転することを特徴とする〔1〕乃至〔5〕のいずれか一項に記載のはんだ粉末付着装置。
〔7〕 前記基板保持部が、複数の前記電子回路基板を保持する構成であることを特徴とする〔1〕乃至〔6〕のいずれか一項に記載のはんだ粉末付着装置。
〔8〕 前記支持部が弾性体からなることを特徴とする〔1〕乃至〔7〕のいずれか一項に記載のはんだ粉末付着装置。
〔9〕 前記容器に蓋が設けられ、前記容器内側に密閉空間を有することを特徴とする〔1〕乃至〔8〕のいずれか一項に記載のはんだ粉末付着装置。
〔10〕 電子回路基板の粘着部にはんだ粉末を付着させるはんだ粉末の付着方法において、容器内部の一方側にはんだ粉末を配置するとともに、前記容器内部の基板保持部に前記電子回路基板をその基板面がほぼ上下方向を向くように保持する準備工程と、前記容器の初期位置を第一の方向に傾動させた傾斜位置とし、傾動機構により前記初期位置から前記第一の方向と反対の第二の方向に、前記容器を傾動させる第一工程と、前記容器を前記第一の方向に再び傾動させる第二工程と、を具備することを特徴とするはんだ粉末の付着方法。
〔11〕 前記第二工程において、前記第二の方向への傾動よりも大きい傾斜角度で、前記第一の方向への傾動を行うことを特徴とする、〔10〕に記載のはんだ粉末の付着方法。
〔12〕 前記第一工程と第二工程において、前記偏芯モーターを複数用い、かつ、それらを全て同じ方向に回転させることを特徴とする〔10〕または〔11〕に記載のはんだ粉末の付着方法。
〔13〕 前記第一工程と第二工程において、前記傾動機構により、傾動の角度を任意の値に制御することを特徴とする〔10〕乃至〔12〕のいずれか一項に記載のはんだ粉末の付着方法。
〔14〕 前記第一工程と第二工程において、前記偏芯モーターの振幅および周波数を、制御手段により任意の値に制御することを特徴とする、〔10〕乃至〔13〕のいずれか一項に記載のはんだ粉末の付着方法。
〔15〕 前記周波数を0.5Hz~100kHzの範囲とすることを特徴とする〔14〕に記載のはんだ粉末の付着方法。
〔16〕 前記準備工程において、前記容器に蓋を設けるとともに、前記容器内側の密閉空間に不活性ガスを充填することを特徴とする〔10〕乃至〔14〕のいずれか一項に記載のはんだ粉末の付着方法。
〔17〕 前記はんだ粉末の粒径が4μm~20μmの範囲であることを特徴とする〔10〕乃至〔16〕のいずれか一項に記載のはんだ粉末の付着方法。
〔18〕 前記はんだ粉末の粒径が5μm~10μmの範囲であることを特徴とする〔17〕に記載のはんだ粉末の付着方法。
これにより、微細なはんだ粉末であっても、その凝集や固形化が防がれ、はんだ粉末を容器の傾動に合わせて流動させることができる。そのため、はんだ粉末は微細部まで均一に行き渡り、電子回路基板の、容器の底部との間の面にも十分付着させることができる。
また、第一の方向から第二の方向に傾動させてはんだ粉末を付着させた後に、第二の方向への傾動よりも大きい傾斜角度で第一の方向の方向に傾動させることにより、余計な箇所に付着したはんだ粉末や、余分なはんだ粉末を効率的に除去することができる。
本実施形態のはんだ粉末付着装置100は、容器1と、電子回路基板10を保持するための図示しない基板保持部と、振動機構3と、傾動機構4と、から概略構成されている。
以下、それぞれの構成について説明する。
図1Aに示すように、容器1の上部には蓋1bが備えられており、これらを嵌合することにより、容器1と蓋1bの内側に密閉空間が構成される。また、蓋1bは開閉できる構成となっており、その開口部より、容器1の内部に、はんだ粉末20を収容することができる。また、容器1は、その内部に後述する基板保持部が配置されており、電子回路基板10を収容できる構成となっている。また、容器1の外側の底部1a中央に対応する位置には、後述する偏芯モーター3aが設けられている。
基板保持部は容器1内に設けられており、複数の電子回路基板10を、その基板面がほぼ上下方向を向くように保持できる構成のものであれば、既存のものを用いても構わない。また、容器1の底部1aから間隔を空けて保持する構成であれば、なお好ましい。このようなものとしてはたとえば、電子回路基板10部分に対応する部分が打ち抜かれた電子回路基板10の保持板と、電子回路基板10の挿入具と電子回路基板10の抑え部からなるものを用いることができる。なお、このような基板保持部においては、その抑え部は電子回路基板10を挿入する際に大きな障害とならないような突起、ピンなど、小型のものを用いることが好ましい。
また、このような基板保持部に複数の電子回路基板10を保持する際は、電子回路基板10同士は並行に並び、かつ、互いに一定の間隔を保って配置されることが好ましい。
本発明の対象となる電子回路基板10はたとえば短冊状の構成であり、また、その材料としては、プラスチック基板、プラスチックフィルム基板、ガラス布基板、紙基質エポキシ樹脂基板、セラミックス基板等に金属板を積層した基板、あるいは金属基材にプラスチックあるいはセラミックス等を被覆した絶縁基板上に、金属等の導電性物質を用いて回路パターンを形成した片面回路基板、両面回路基板、多層回路基板あるいはフレキシブル回路基板等を用いることができる。また、その他に、IC基板、コンデンサ、抵抗、コイル、バリスタ、ベアチップ、ウェーハ等の適用も可能である。
このような粘着性付与化合物としては、ナフトトリアゾール系誘導体、べンゾトリアゾール系誘導体、イミダゾール系誘導体、べンゾイミダゾール系誘導体、メルカプトべンゾチアゾール系誘導体およびべンゾチアゾールチオ脂肪酸等を用いることができる。これらの粘着性付与化合物は特に銅に対しての効果が強いが、他の導電性物質にも粘着性を付与することができる。
振動機構3は偏芯モーター3aと制御手段3bから構成されている。
偏芯モーター3aは容器1の外側で、かつ、底部1a中央に対応する位置に設けられている。また、この偏芯モーター3aの回転軸は、後述する制御手段3bにより、その回転方向と振幅および周波数を制御されている。本実施形態においては、制御手段3bにより、偏芯モーター3aの回転軸は容器1の傾動方向と同じ方向に回転するように制御され、また、容器1の傾動方向に応じてその回転方向も変更される。
図1Aに示すように、傾動機構4は容器1の外側に設けられている。傾動機構4はたとえば傾動軸4aと傾動手段4bと傾動板4cから構成されており、このうち傾動板4cは後述する支持部2によって容器1と連結した構成となっている。なお、傾動機構4の構成はここに示すものに限られず、容器1を傾動可能なものであれば他の構成でもかまわない。
また、支持部2の配置は特に限定されないが、少なくとも容器1の底部1aの両端を支持するとともに、互いが等間隔で配置されていることが好ましい。
これらの構成により、傾動機構4は任意の傾斜角度で容器1を傾動させることができる。また、傾動方向に応じて、その傾斜角度を任意に設定することも可能である。
これにより、容器1の傾動に応じて、その底部1aに対し垂直の角度で振動を与えることができる。
また、はんだ粉末20を付着させた後に、はんだ粉末20を付着させる際よりも大きい傾斜角度で反対の方向に傾動させるとともに、偏芯モーター3aを反転させて振動を加えることにより、余計な箇所に付着したはんだ粉末20や、余分なはんだ粉末20を効率的に除去することができる。
本実施形態の電子回路基板10に対するはんだ粉末20の付着方法は、電子回路基板10上の端子の表面に粘着性付与化合物を塗布して粘着層を形成する工程と、容器1内部の一方側にはんだ粉末20を配置する工程と、容器1内部のはんだ粉末20に対向する位置の基板保持部に電子回路基板10をその基板面がほぼ上下方向を向くように保持させる工程(準備工程)と、容器1の初期位置を第一の方向Aに傾動させた傾斜位置とし、はんだ粉末20を容器1内部の第一の方向Aから第二の方向Bへ移動させる第一工程と、はんだ粉末20を容器1内部の第二の方向Bから第一の方向Aへ移動させる第二工程と、から概略構成されている。なお、以下の説明において例示される構成は一例であって、本発明はそれらに限定されるものではなく、その要旨を変更しない範囲で適宜変更して実施することが可能である。
準備工程はさらに、電子回路基板10上の端子の表面に粘着性付与化合物を塗布して粘着層を形成する工程と、容器1内部の所定位置にはんだ粉末20を配置する工程と、容器1内部のはんだ粉末20に対向する位置の基板保持部に電子回路基板10を保持させる工程から概略構成されている。以下それぞれの構成についてその詳細を説明する。
まず、はじめに、電子回路基板10の図示しない導電性回路電極の表面を粘着性付与化合物で処理する。
はじめに、電子回路基板10を準備する。本発明の対象となる電子回路基板10はたとえば短冊状の構成であり、また、その材料としては、プラスチック基板、プラスチックフィルム基板、ガラス布基板、紙基質エポキシ樹脂基板、セラミックス基板等に金属板を積層した基板、あるいは金属基材にプラスチックあるいはセラミックス等を被覆した絶縁基板上に、金属等の導電性物質を用いて回路パターンを形成した片面回路基板、両面回路基板、多層回路基板あるいはフレキシブル回路基板等を用いることができる。また、その他に、IC基板、コンデンサ、抵抗、コイル、バリスタ、ベアチップ、ウェーハ等の適用も可能である。
次いで、粘着性溶液に電子回路基板10を浸漬するか、または電子回路基板10に粘着性溶液を塗布する。これにより、電子回路基板10の回路パターンに粘着層が形成される。
また、本発明においては、一般式(1)で表されるべンゾトリアゾール系誘導体を好適に用いることができる。但し、式(1)中のR1~R4は、独立に水素原子、炭素数が1~16(好ましくは5~16)のアルキル基、アルコキシ基、F、Br、Cl、I、シアノ基、アミノ基またはOH基となる。
また、一般式(3)及び一般式(4)で示されるイミダゾール系誘導体及びべンゾイミダゾール系誘導体においても、一般には、R11~R17の炭素数が多いほど粘着性が強くなる。
また、一般式(6)で示されるべンゾチアゾールチオ脂肪酸系誘導体においては、R22~R26の炭素数は、1または2であることが好ましい。
次いで、容器1を第一の方向A側に傾けて蓋1bを開放し、図1Aに示すようにはんだ粉末20を配置する。ここで、はんだ粉末20の金属組成としては、例えばSn-Pb系、Sn-Pb-Ag系、Sn-Pb-Bi系、Sn-Pb-Bi-Ag系、Sn-Pb-Cd系が挙げられる。また、最近の産業廃棄物におけるPb排除の観点から、Pbを含まないSn-In系、Sn-Bi系、In-Ag系、In-Bi系、Sn-Zn系、Sn-Ag系、Sn-Cu系、Sn-Sb系、Sn-Au系、Sn-Bi-Ag-Cu系、Sn-Ge系、Sn-Bi-Cu系、Sn-Cu-Sb-Ag系、Sn-Ag-Zn系、Sn-Cu-Ag系、Sn-Bi-Sb系、Sn-Bi-Sb-Zn系、Sn-Bi-Cu-Zn系、Sn-Ag-Sb系、Sn-Ag-Sb-Zn系、Sn-Ag-Cu-Zn系、Sn-Zn-Bi系を用いることが特に好ましい。
次いで、容器1内部の第一の方向A側に、はんだ粉末20を配置する。このとき、はんだ粉末20は、基板保持部に接触しないようにすることが好ましい。この蓋1bは、電子回路基板10へはんだ粉末20を付着させる処理を行うたびに開放し、そこからはんだ粉末20および電子回路基板10を容器1内に出し入れする。
また、本実施形態においては、はんだ粉末20を電子回路基板10よりも先に容器1内部に入れておくことが好ましい。これにより、後述する基板保持部に電子回路基板10を保持させる工程において蓋1bを開閉しても、はんだ粉末20の飛散が抑制されるためである。
次いで、図示しない基板保持部に電子回路基板10を保持させる。この基板保持部は容器1内に設けられており、複数の電子回路基板10を容器1の底部1aから間隔を空けるとともに、その基板面をほぼ上下方向を向くように保持できる構成であれば、既存のものを用いても構わない。また、このような基板保持部においては、その抑え部は電子回路基板10を挿入する際に大きな障害とならないような突起、ピンなど、小型のものを用いることが好ましい。
このような基板保持部に電子回路基板10を保持させることにより、電子回路基板10の他面側10bは、容器1の底部1aと並行に、かつ、底部1aとの間で間隔を保って保持される。
この後、蓋1bを閉じて、容器1内部の密閉空間にたとえばN2などの不活性ガスを充填させる。また、この後の工程において電子回路基板10を取り出すまで、蓋1bは閉じたままとする。容器1内部を不活性ガスで充填させたままにすることで、はんだ粉末20の酸化を防止するためである。
次いで、図1A~図1Dに示すように、はんだ粉末20を容器1内部の第一の方向A側から第二の方向B側へ移動させる。
図1Aは、容器1内部にはんだ粉末20もしくははんだ懸濁液と電子回路基板10を配置した状態である。容器1の外側には、偏芯モーター3aと制御手段3bからなる振動機構3が設けられており、このうち少なくとも偏芯モーター3aは底部1a中央に対応する位置に設けられている。
また、容器1の外側には、傾動軸4aと傾動手段4bと傾動板4cからなる傾動機構4が設けられており、後述する支持部2を介して容器1を傾動させる構成となっている。また、その傾動手段4bは、傾斜角度を任意に設定可能である。
ここで、容器1はたとえばバネなどの弾性体からなる支持部2により傾動板4cと連結している。これにより、容器1は傾動板4cに連動して傾動する。また、支持部2はバネに限られず、容器1の重量を支えることができ、かつ、弾性体であれば他のものから構成されていても構わない。また、支持部2の配置は特に限定されないが、少なくとも容器1の底部1aの両端を支持するとともに、互いが等間隔で配置されていることが好ましい。
また、偏芯モーター3aの回転軸は制御手段3bにより、容器1の傾動方向と同じ方向に回転するように制御されている。これにより、偏芯モーター3aの回転軸は容器1の傾動方向に応じてその回転方向を変化させ、底部1aに対し常に垂直の角度で振動を与える。
また、はんだ粉末20は下から上に突き上げられ、跳ね上がるように挙動するため、電子回路基板10に垂直の角度で衝突し、粘着部に効果的に付着する。
次いで、図2A~図2Cに示すように、はんだ粉末20を容器1内部の第二の方向Bから第一の方向Aへ移動させる。図2Aは、第一工程の後の状態であり、容器1内部の第二の方向Bの側に、はんだ粉末20もしくははんだ懸濁液と電子回路基板10が配置された状態である。
まず、容器1を水平状態からたとえば30°の角度で第一の方向Aの側へ傾動させる。
この傾動は、第一工程での傾動とは逆の方向である。また、この傾動は、第一工程での第二の方向Bへの傾動よりも大きい傾斜角度で行うことが好ましい。
このとき、容器1の傾動は、第一工程での容器1の傾動よりも大きい傾斜角度で行うことが好ましい。それにより、余計な箇所に付着したはんだ粉末20や、余分なはんだ粉末20は振動により跳ね上がるとともに、容器1内を第一の方向Aの方向へ移動する。これにより、粘着部以外の箇所に付着したはんだ粉末20を効果的に除去することができる。
また、偏芯モーター3aの振幅および周波数は、はんだ粉末20の移動状態や跳ね上がりの状態に応じて任意に設定すればよい。また、偏芯モーター3aが複数設けられている場合は、偏芯モーター3aは全て同じ方向に回転するように制御手段3bにより制御することが好ましい。
この後、図2Cに示すように、はんだ粉末20は容器1の第一の方向Aの側壁に当たり、その移動を終了する。
また、偏芯モーター3aを、容器1の傾動方向と同じ方向で回転させることができる。これにより、容器1の傾動に応じて、その底部1aに対し垂直の角度で振動を与えることができる。
また、第二工程において、第一工程よりも大きい傾斜角度で容器1を傾動させることにより、余計な箇所に付着したはんだ粉末20や、余分なはんだ粉末20を効率的に除去することが可能となる。
(実施例1)
まず、幅50mm、縦200mm、厚さ0.4mmの大きさの短冊状の電子回路基板10を準備した。なお、電子回路基板10の電極の最小幅は20μmであり、電極間の最小間隔は20μmであった。
次いで、塩酸水により電子回路基板10の前処理を行った。次いで、粘着性付与化合物を含む粘着性溶液として一般式(3)のR12のアルキル基がC11H23、R11が水素原子であるイミダゾール系化合物の2質量%水溶液を準備し、酢酸によりそのpHを約4に調整した。次いで、この粘着性溶液を40℃に加温し、電子回路基板10を3分間浸漬した。これにより、電子回路基板10の一面側10aおよび他面側10bの電子回路に粘着層が形成された。
次いではんだ粉末付着装置100を準備し、図示しない基板保持部に、三枚の電子回路基板10の一面側10aを上方(容器1の蓋1b側)に向け、かつ、底部1aとの間で間隔を保つ構成で保持させた。この状態を図1Aに示す。
この第一の方向Aへの傾動と第二の方向Bの方向への傾動は一回ずつ行った。また、これら傾動の周期はそれぞれ10秒とした。
次いで、電子回路基板10の一面側10aと他面側10bの両面に活性剤を塗布した。
次いで電子回路基板10を空気中で乾燥させ、240℃に加熱したオーブンに入れて空気中で1分加熱し、はんだ粉末20を融解させた。この後、電子回路基板10の電子回路の確認を行ったが、短絡や脱落は見られなかった。
偏芯モーター3aを回転させない以外は、実施例1と同じ方法を採用したが、図3に示すように、容器1を傾動させても、はんだ粉末20は十分に拡散しなかった。また、この後、電子回路基板10を製造したのちに電子回路の確認を行ったところ、短絡や脱落が観察された。
Claims (18)
- 電子回路基板およびはんだ粉末を収容する容器と、
前記容器内に備え付けられ、前記電子回路基板をその基板面がほぼ上下方向を向くように保持する基板保持部と、
前記容器の初期位置を第一の方向に傾動させた傾斜位置とし、前記初期位置から前記第一の方向と反対の第二の方向に前記容器を傾動させてから、前記容器を前記第一の方向に再び傾動させる傾動機構と、
回転軸を回転させることにより前記容器の底部に振動を与える、前記底部の中心に設けられた偏芯モーターと、前記偏芯モーターの前記回転軸を前記容器の傾動方向と同じ方向に設定する制御手段からなる振動機構と、を具備してなることを特徴とするはんだ粉末付着装置。 - 前記振動機構が、前記傾動機構が前記容器を傾動させる際に前記容器を振動させる機能を有することを特徴とする請求項1に記載のはんだ粉末付着装置。
- 前記傾動機構が、傾動の角度を任意の値に制御するものであることを特徴とする請求項1に記載のはんだ粉末付着装置。
- 前記制御手段が、前記偏芯モーターの振幅および周波数を任意の値に制御するものであることを特徴とする請求項1に記載のはんだ粉末付着装置。
- 前記周波数が0.5Hz~100kHzの範囲であることを特徴とする請求項4に記載のはんだ粉末付着装置。
- 前記偏芯モーターが複数設けられ、全てが同じ方向に回転することを特徴とする請求項1に記載のはんだ粉末付着装置。
- 前記基板保持部が、複数の前記電子回路基板を保持する構成であることを特徴とする請求項1に記載のはんだ粉末付着装置。
- 前記支持部が弾性体からなることを特徴とする請求項1項に記載のはんだ粉末付着装置。
- 前記容器に蓋が設けられ、前記容器内側に密閉空間を有することを特徴とする請求項1に記載のはんだ粉末付着装置。
- 電子回路基板の粘着部にはんだ粉末を付着させるはんだ粉末の付着方法において、
容器内部の一方側にはんだ粉末を配置するとともに、前記容器内部の基板保持部に前記電子回路基板をその基板面がほぼ上下方向を向くように保持する準備工程と、
前記容器の初期位置を第一の方向に傾動させた傾斜位置とし、傾動機構により前記初期位置から前記第一の方向と反対の第二の方向に、前記容器を傾動させる第一工程と、
前記容器を前記第一の方向に再び傾動させる第二工程と、を具備することを特徴とするはんだ粉末の付着方法。 - 前記第二工程において、前記第二の方向への傾動よりも大きい傾斜角度で、前記第一の方向への傾動を行うことを特徴とする、請求項10に記載のはんだ粉末の付着方法。
- 前記第一工程と第二工程において、前記偏芯モーターを複数用い、かつ、それらを全て同じ方向に回転させることを特徴とする請求項10に記載のはんだ粉末の付着方法。
- 前記第一工程と第二工程において、前記傾動機構により、傾動の角度を任意の値に制御することを特徴とする、請求項10に記載のはんだ粉末の付着方法。
- 前記第一工程と第二工程において、前記偏芯モーターの振幅および周波数を、制御手段により任意の値に制御することを特徴とする、請求項10に記載のはんだ粉末の付着方法。
- 前記周波数を0.5Hz~100kHzの範囲とすることを特徴とする請求項14に記載のはんだ粉末の付着方法。
- 前記準備工程において、前記容器に蓋を設けるとともに、前記容器内側の密閉空間に不活性ガスを充填することを特徴とする請求項10に記載のはんだ粉末の付着方法。
- 前記はんだ粉末の粒径が4μm~20μmの範囲であることを特徴とする請求項10に記載のはんだ粉末の付着方法。
- 前記はんだ粉末の粒径が5μm~10μmの範囲であることを特徴とする請求項17に記載のはんだ粉末の付着方法。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11734637.9A EP2528422A4 (en) | 2010-01-20 | 2011-01-18 | APPARATUS FOR ADDING SOLDER POWDER AND METHOD FOR ADHERING SOLDER POWDER TO ELECTRONIC PRINTED CIRCUIT |
CN201180006277.XA CN102714922B (zh) | 2010-01-20 | 2011-01-18 | 钎焊粉附着装置和钎焊粉对电子电路基板附着的附着方法 |
KR1020127018667A KR101424903B1 (ko) | 2010-01-20 | 2011-01-18 | 땜납 분말 부착 장치 및 전자 회로 기판에 대한 땜납 분말의 부착 방법 |
US13/522,547 US8752754B2 (en) | 2010-01-20 | 2011-01-18 | Apparatus for adhering solder powder and method for adhering solder powder to electronic circuit board |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010010270A JP5518500B2 (ja) | 2010-01-20 | 2010-01-20 | はんだ粉末付着装置および電子回路基板に対するはんだ粉末の付着方法 |
JP2010-010270 | 2010-01-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011090031A1 true WO2011090031A1 (ja) | 2011-07-28 |
Family
ID=44306833
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2011/050769 WO2011090031A1 (ja) | 2010-01-20 | 2011-01-18 | はんだ粉末付着装置および電子回路基板に対するはんだ粉末の付着方法 |
Country Status (7)
Country | Link |
---|---|
US (1) | US8752754B2 (ja) |
EP (1) | EP2528422A4 (ja) |
JP (1) | JP5518500B2 (ja) |
KR (1) | KR101424903B1 (ja) |
CN (1) | CN102714922B (ja) |
TW (1) | TWI450665B (ja) |
WO (1) | WO2011090031A1 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8955735B2 (en) * | 2013-05-17 | 2015-02-17 | Zen Voce Corporation | Method for enhancing the yield rate of ball implanting of a substrate of an integrated circuit |
US9120170B2 (en) * | 2013-11-01 | 2015-09-01 | Zen Voce Corporation | Apparatus and method for placing and mounting solder balls on an integrated circuit substrate |
DE112014006846T5 (de) * | 2014-07-28 | 2017-04-13 | GM Global Technology Operations LLC | Systeme und Verfahren zum verstärkten Kleben |
KR102517779B1 (ko) | 2016-02-18 | 2023-04-03 | 삼성전자주식회사 | 리드 프레임 및 이를 포함하는 반도체 패키지, 반도체 패키지의 제조 방법 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH077244A (ja) | 1992-10-30 | 1995-01-10 | Showa Denko Kk | はんだ回路基板及びその形成方法 |
JPH0774457A (ja) * | 1993-06-07 | 1995-03-17 | Showa Denko Kk | はんだ回路基板の形成方法 |
JP2003332375A (ja) | 2002-05-13 | 2003-11-21 | Shinko Electric Ind Co Ltd | 導電性粉末付着装置及び導電性粉末付着方法 |
JP2006278650A (ja) | 2005-03-29 | 2006-10-12 | Showa Denko Kk | ハンダ回路基板の製造方法 |
JP2007149818A (ja) | 2005-11-25 | 2007-06-14 | Showa Denko Kk | ハンダ基板処理用治具および電子回路基板に対するハンダ粉末の付着方法 |
JP2010010270A (ja) | 2008-06-25 | 2010-01-14 | Nec Electronics Corp | 半導体装置の製造方法 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4898117A (en) * | 1988-04-15 | 1990-02-06 | International Business Machines Corporation | Solder deposition system |
JPH06344132A (ja) * | 1993-06-10 | 1994-12-20 | Hitachi Ltd | 微小はんだボールの位置決め方法及びその装置 |
US5527628A (en) * | 1993-07-20 | 1996-06-18 | Iowa State University Research Foudation, Inc. | Pb-free Sn-Ag-Cu ternary eutectic solder |
JP3604066B2 (ja) * | 1998-12-28 | 2004-12-22 | 松下電器産業株式会社 | 起振機保持装置およびこれを備えた携帯用電子機器 |
JP3159212B1 (ja) * | 2000-01-28 | 2001-04-23 | 松下電器産業株式会社 | ブラシレス振動モータ |
US7119438B2 (en) * | 2002-01-10 | 2006-10-10 | Nec Corporation | Method of arranging microspheres with liquid, microsphere arranging device, and semiconductor device |
JP2004087756A (ja) * | 2002-08-27 | 2004-03-18 | Tamura Seisakusho Co Ltd | 金属ボールの配列方法及びこれを用いた半導体装置の製造方法 |
JP4576286B2 (ja) * | 2004-05-10 | 2010-11-04 | 昭和電工株式会社 | 電子回路基板の製造方法および電子部品の実装方法 |
US20050274770A1 (en) * | 2004-06-07 | 2005-12-15 | Henderson Marvin A Sr | Method for the precise and reliable placement of solid metallic and non-metallic particles |
EP1864750B1 (en) * | 2005-04-01 | 2016-11-09 | Koki Company Limited | Conductive filler and solder material |
JP4591399B2 (ja) * | 2006-04-03 | 2010-12-01 | パナソニック株式会社 | 部品接合方法ならびに部品接合構造 |
WO2007125861A1 (ja) * | 2006-04-26 | 2007-11-08 | Senju Metal Industry Co., Ltd. | ソルダペースト |
WO2008016128A1 (en) * | 2006-08-03 | 2008-02-07 | Showa Denko K.K. | Production method of soldier circuit board |
JP5313751B2 (ja) * | 2008-05-07 | 2013-10-09 | パナソニック株式会社 | 電子部品装着装置 |
US8091767B2 (en) * | 2009-02-10 | 2012-01-10 | Hioki Denki Kabushiki Kaisha | Substrate manufacturing apparatus, substrate manufacturing method, ball-mounted substrate, and electronic component-mounted substrate |
-
2010
- 2010-01-20 JP JP2010010270A patent/JP5518500B2/ja not_active Expired - Fee Related
-
2011
- 2011-01-18 KR KR1020127018667A patent/KR101424903B1/ko active IP Right Grant
- 2011-01-18 WO PCT/JP2011/050769 patent/WO2011090031A1/ja active Application Filing
- 2011-01-18 US US13/522,547 patent/US8752754B2/en not_active Expired - Fee Related
- 2011-01-18 CN CN201180006277.XA patent/CN102714922B/zh not_active Expired - Fee Related
- 2011-01-18 EP EP11734637.9A patent/EP2528422A4/en not_active Withdrawn
- 2011-01-19 TW TW100101951A patent/TWI450665B/zh not_active IP Right Cessation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH077244A (ja) | 1992-10-30 | 1995-01-10 | Showa Denko Kk | はんだ回路基板及びその形成方法 |
JPH0774457A (ja) * | 1993-06-07 | 1995-03-17 | Showa Denko Kk | はんだ回路基板の形成方法 |
JP2003332375A (ja) | 2002-05-13 | 2003-11-21 | Shinko Electric Ind Co Ltd | 導電性粉末付着装置及び導電性粉末付着方法 |
JP2006278650A (ja) | 2005-03-29 | 2006-10-12 | Showa Denko Kk | ハンダ回路基板の製造方法 |
JP2007149818A (ja) | 2005-11-25 | 2007-06-14 | Showa Denko Kk | ハンダ基板処理用治具および電子回路基板に対するハンダ粉末の付着方法 |
JP2010010270A (ja) | 2008-06-25 | 2010-01-14 | Nec Electronics Corp | 半導体装置の製造方法 |
Also Published As
Publication number | Publication date |
---|---|
EP2528422A1 (en) | 2012-11-28 |
CN102714922A (zh) | 2012-10-03 |
KR101424903B1 (ko) | 2014-07-31 |
KR20120099779A (ko) | 2012-09-11 |
US20120292377A1 (en) | 2012-11-22 |
TW201146119A (en) | 2011-12-16 |
CN102714922B (zh) | 2015-04-08 |
TWI450665B (zh) | 2014-08-21 |
US8752754B2 (en) | 2014-06-17 |
EP2528422A4 (en) | 2013-08-28 |
JP2011151140A (ja) | 2011-08-04 |
JP5518500B2 (ja) | 2014-06-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5456545B2 (ja) | 回路基板の製造方法 | |
TWI325293B (en) | Production method of solder circuit board | |
JP4576286B2 (ja) | 電子回路基板の製造方法および電子部品の実装方法 | |
KR101193264B1 (ko) | 회로 기판의 제조 방법 | |
JP5518500B2 (ja) | はんだ粉末付着装置および電子回路基板に対するはんだ粉末の付着方法 | |
JP5001113B2 (ja) | プリント配線基板上にハンダ層を形成する方法及びスラリーの吐出装置 | |
TW200819013A (en) | Production method of solder circuit board | |
TWI505382B (zh) | 焊球之製造方法 | |
JP2008041803A (ja) | ハンダ回路基板の製造方法 | |
JP2008041867A (ja) | ハンダ回路基板の製造方法 | |
JP4819422B2 (ja) | 電子回路基板へのハンダ粉末の付着方法およびハンダ付電子配線基板 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201180006277.X Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 11734637 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2011734637 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 20127018667 Country of ref document: KR Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13522547 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |