WO2021181548A1 - 電子部品の製造方法及び装置 - Google Patents
電子部品の製造方法及び装置 Download PDFInfo
- Publication number
- WO2021181548A1 WO2021181548A1 PCT/JP2020/010448 JP2020010448W WO2021181548A1 WO 2021181548 A1 WO2021181548 A1 WO 2021181548A1 JP 2020010448 W JP2020010448 W JP 2020010448W WO 2021181548 A1 WO2021181548 A1 WO 2021181548A1
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- WIPO (PCT)
- Prior art keywords
- electronic component
- paste
- conductive paste
- dip layer
- layer
- Prior art date
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 42
- 239000012530 fluid Substances 0.000 claims abstract description 6
- 239000007787 solid Substances 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 52
- 238000005520 cutting process Methods 0.000 claims description 16
- 238000007493 shaping process Methods 0.000 claims description 4
- 239000010408 film Substances 0.000 description 31
- 238000000576 coating method Methods 0.000 description 21
- 239000011248 coating agent Substances 0.000 description 15
- 239000000758 substrate Substances 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003985 ceramic capacitor Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G13/00—Apparatus specially adapted for manufacturing capacitors; Processes specially adapted for manufacturing capacitors not provided for in groups H01G4/00 - H01G11/00
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/228—Terminals
- H01G4/252—Terminals the terminals being coated on the capacitive element
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/30—Stacked capacitors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/14—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors
- H01C1/142—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors the terminals or tapping points being coated on the resistive element
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/14—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors
- H01C1/148—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors the terminals embracing or surrounding the resistive element
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C17/00—Apparatus or processes specially adapted for manufacturing resistors
- H01C17/28—Apparatus or processes specially adapted for manufacturing resistors adapted for applying terminals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G13/00—Apparatus specially adapted for manufacturing capacitors; Processes specially adapted for manufacturing capacitors not provided for in groups H01G4/00 - H01G11/00
- H01G13/006—Apparatus or processes for applying terminals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/228—Terminals
- H01G4/232—Terminals electrically connecting two or more layers of a stacked or rolled capacitor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/14—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/10—Connecting leads to windings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/228—Terminals
- H01G4/232—Terminals electrically connecting two or more layers of a stacked or rolled capacitor
- H01G4/2325—Terminals electrically connecting two or more layers of a stacked or rolled capacitor characterised by the material of the terminals
Definitions
- the present invention relates to a method for manufacturing electronic components, an apparatus, and the like.
- a conductive paste layer is dip-coated on the end faces of electronic component bodies such as multilayer ceramic capacitors, inductors, and thermistors to form external electrodes on the electronic component body.
- the film thickness of the conductive paste layer as it is applied with the dip is not uniform. Therefore, after the electronic component body to which the conductive paste was dipped was pulled up from the dip layer formed on the platen surface, the dip layer was removed from the conductive paste layer formed at the end of the electronic component body. It has also been proposed to bring it into contact with the platen surface (Patent Document 1). This step is called a blot step because the excess conductive paste on the electronic component body side is wiped off with a surface plate. By carrying out this blot step, it is expected that a substantially uniform conductive paste layer will be formed at the end of the electronic component body.
- the conductive paste layer of the electronic component body is pulled toward the surface plate by the surface tension of the conductive paste transferred to the surface plate.
- a stringing phenomenon occurs in which the conductive paste on the surface plate and the conductive paste on the main body of the electronic component are connected. Due to such a phenomenon, the external electrode of the main body of the electronic component tends to have a thick portion covering the vicinity of the center of the end face and a thin portion covering the vicinity of the peripheral edge.
- Such an external electrode hinders the flatness of the surface of the external electrode and causes non-uniformity in the film thickness of the external electrode.
- the conductive paste layer moves toward the surface plate, especially at the corners between the end face and the side surface of the electronic component body, and the thickness of the corners becomes thin. Become.
- the soldering quality becomes unstable.
- the conductive paste on the surface plate is removed after the dip application, and then the electronic components are brought into contact with the surface plate again, and then the surface plate is set. Must be separated from the board.
- the applicant of the present application separates the electronic component main body from the dip layer on the surface plate to form a conductive paste layer at the end portion of the electronic component main body, and then applies the conductive paste layer to the end face of the electronic component main body.
- the film thickness of the conductive paste layer on the end face of the electronic component body becomes more uniform. Further, since the shaping step using the wire rod does not necessarily require the conventional blotting step performed after removing the dip layer from the surface plate used for coating, the step time is expected to be shortened.
- One aspect of the present invention is The first step of moving the electronic component body in the first direction relative to the dip layer of the conductive paste and immersing the end portion of the electronic component body in the dip layer.
- the third step of forcibly cutting by contact with a cutting means which is a solid or fluid is performed by pulling the end of the electronic component body away from the dip layer.
- the fourth step After the third step, the fourth step of removing excess paste material from the conductive paste applied to the end portion of the electronic component body, and the fourth step.
- the present invention relates to a method of manufacturing an electronic component having.
- the conductive paste is applied to the end portion including the end face of the electronic component main body and the side surface following the end face by the first step and the second step.
- the connection between the conductive paste applied to the end portion of the main body of the electronic component and the dip layer is forcibly cut by contact with a cutting means which is a solid or a fluid.
- the fourth step removes excess paste from the conductive paste applied to the end portion of the main body of the electronic component.
- the side surface of the electronic component main body or the angle connecting the side surface and the end face is formed.
- the conductive paste applied to the side surface of the electronic component body and the corner portion connecting the side surface and the end face is a stringed portion as the distance between the end portion of the electronic component body and the dip layer increases due to the implementation of the second step. The amount of movement to is increased. Then, when the above interval is widened to the extent that the stringing portion is naturally cut, the film thickness of the conductive paste layer on the side surface and the corner portion of the electronic component body is almost fixed, but at this point, a sufficient film thickness is obtained. It turned out that it could not be secured.
- the film thickness of the conductive paste layer on the side surface and the corner portion of the electronic component body can be secured thicker than before. can.
- a flattened conductive paste layer can be formed by removing excess paste from the conductive paste applied to the end face of the electronic component body.
- the shaping function beyond the function of the conventional blot step of contacting the conductive paste layer with the surface plate, for example, after the dip layer is removed, is replaced by the third step and the fourth step. Can be done. Further, in the conventional blot process, it is necessary to wait for the dip layer on the surface plate to be removed, whereas the paste removing member can be used without waiting for the dip layer on the surface plate to be removed. , The process time is shortened.
- a through hole is formed in the wire rod, the edge of the first plate material, or the edge of the through hole of the second plate material, and the extra edge of the through hole is formed. Can be brought into contact with the paste. That is, the paste removing member can utilize any shape that can be removed while in contact with the excess paste by moving relative to the electronic component body in the third direction.
- the paste removing member is moved in a fourth direction opposite to the third direction relative to the electronic component body, and the paste removing member is moved. It is possible to further have a fifth step of removing a part of the paste of the conductive paste layer and shaping the conductive paste layer. As a result, a part of the paste of the conductive paste layer formed on the end face of the electronic component body by the third step and the fourth step is removed by carrying out the fifth step, and the conductive paste layer is regenerated. Can be shaped. Thereby, the flatness of the conductive paste layer can be further improved.
- the paste removing member may be repeatedly moved relative to the third direction and the fourth direction to shape the conductive paste layer three times or more.
- a jig for holding a plurality of electronic component bodies including the electronic component body is provided as a dip layer.
- the third step and the fourth step include the step of moving the jig in either the first direction or the second direction relative to the paste removing member. Therefore, the step of moving in the third direction can be included.
- a conductive paste layer can be formed on a plurality of electronic component bodies.
- the jig is M (M is 2 or more) along a fifth direction intersecting the third direction in a plane parallel to the end surface of the electronic component body.
- the electronic component main body is held, and each of the first step to the fourth step can be simultaneously performed on the M electronic component main bodies. In this way, each of the first step to the four steps can be simultaneously performed on the M electronic component bodies arranged in a one-dimensional manner.
- the paste removing member includes a plate material parallel to the end surface of the electronic component body and a slit formed through the plate material in the thickness direction.
- the slit extends along the fifth direction, and in each of the first step and the second step, the end portion of the M electronic component main body is placed above the plate material through the slit.
- the third step and the fourth step include the step of moving relative to the lower side, and in the third step and the fourth step, the excess paste is simultaneously applied from the end portion of the M electronic component main body by the first edge of the slit.
- the step of removing can be included.
- each of the first and second steps is carried out, and excess paste is applied from the M electronic component bodies to the first slit.
- the third step and the fourth step of removing at the same time by the edge can be carried out.
- the fifth step can remove the partial paste of the conductive paste layer at the second edge of the slit. .. In this way, the conductive paste layer can be reshaped for the M electronic component bodies.
- the paste removing member includes a wire rod or a plate material extending along the fifth direction, and each of the first step and the second step includes the M pieces.
- the third step and the fourth step include the step of moving the end portion of the electronic component main body relative to the upper side and the lower side with respect to the height position of the wire rod or the plate material.
- the step of removing the excess paste from the end portion of the electronic component main body by the edge of the wire rod or the plate material can be included. In this way, each of the first and second steps can be carried out without interfering with the wire or plate, and the third and fourth steps of simultaneously removing excess paste from the M electronic component bodies by the edges of the wire or plate. Can be carried out.
- the jig holds N (N is an integer of 2 or more) electronic component bodies along the third direction, and the first step to the above.
- N is an integer of 2 or more
- Each of the fourth steps can be carried out simultaneously on M ⁇ N electronic component bodies.
- each of the first step to the fourth step can be simultaneously performed on the M ⁇ N electronic component bodies arranged in two dimensions.
- the paste removing member is formed by penetrating a plate material parallel to the end surface of the M ⁇ N electronic component main body in the thickness direction of the plate material.
- the first step and the second step include N slits, and the N slits extend in parallel along the fifth direction and are provided at intervals in the third direction.
- the third step and the third step include a step of relatively moving the end portion of the M ⁇ N electronic component main body between the upper side and the lower side of the plate material through the N slits.
- the four steps can include removing the excess paste from the end of the M ⁇ N electronic component body by the first edge of the N slits.
- each of the first and second steps is carried out by moving the M ⁇ N electronic component bodies relatively at the same time through the N slits, and the M ⁇ N electronic component bodies are extra. It is possible to carry out the third step and the fourth step of simultaneously removing the paste by the first edge of N slits.
- the fourth step removes the partial paste of the conductive paste layer by the second edge of the N slits. be able to. In this way, the conductive paste layer can be reshaped for the M ⁇ N electronic component bodies.
- the paste removing member extends along the fifth direction, and N wire rods or N plate members provided at intervals in the third direction are formed.
- Each of the first step and the second step includes the end portion of the M ⁇ N electronic component main body upward and downward with respect to the same height position of the N wire rod or the N plate material.
- the third step and the fourth step include the step of moving the extra paste from the end of the M ⁇ N electronic component main body to the N wire rods or the N wire rods or the above.
- a step of removing by the edges of N plates can be included.
- each of the first and second steps can be carried out without interfering with the N wires or N plates, and the excess paste from the M ⁇ N electronic component body can be applied to the N wires or N plates.
- the third step and the fourth step of removing at the same time by the plate material can be carried out.
- Another aspect of the present invention is In an electronic component manufacturing apparatus that forms electrodes at each end of a plurality of electronic component bodies.
- a paste removing member that removes excess paste from the conductive paste applied to the end of each of the plurality of electronic component bodies.
- a first moving mechanism that moves the jig relative to the dip layer forming portion along the normal direction of the main surface of the dip layer forming portion.
- a second moving mechanism that moves the jig relative to the paste removing member along a direction parallel to the main surface of the dip layer forming portion.
- the first moving mechanism moves the jig in the first direction along the normal direction relative to the dip layer forming portion, and moves the end portion of each of the plurality of electronic component bodies. Immerse in the dip layer, and then move the jig in a second direction opposite to the first direction relative to the dip layer forming portion to move the end portion of the electronic component body. Pull away from the dip layer
- the second moving mechanism attaches the jig to the paste removing member when the conductive paste applied to the end of each of the plurality of electronic component bodies is connected to the dip layer.
- the conductive paste layer separated from the excess paste and the dip layer by moving the dip layer forming portion in a third direction parallel to the main surface of the dip layer forming portion is moved to the end portion of the electronic component body.
- the present invention relates to a manufacturing apparatus for electronic components formed in.
- the jig is moved by the first moving mechanism relative to the dip layer forming portion along the normal direction of the main surface of the dip layer forming portion.
- the first step and the second step of the method invention according to one aspect can be carried out.
- the conductive paste can be applied to the end portion including each end face of the plurality of electronic component main bodies and the side surface following the end face.
- the method invention according to one aspect of the present invention is obtained by moving the jig relative to the paste removing member along a third direction parallel to the main surface of the dip layer forming portion by the second moving mechanism.
- the third step and the fourth step of the above can be carried out at the same time.
- the film thickness of the conductive paste layer formed on each side surface or corner of the plurality of electronic component bodies is secured, and the conductive paste layer formed on each end surface of the plurality of electronic component bodies is flattened. Can be transformed into.
- FIG. 1 It is a partially enlarged view which shows the 1st process of 2nd Embodiment of this invention. It is a partially enlarged view which shows the 2nd process of 2nd Embodiment of this invention. It is a figure which shows the 3rd process and 4th process of the 2nd Embodiment of this invention. It is a partially enlarged view of FIG. It is a figure which shows the manufacturing apparatus of the electronic component which concerns on 3rd Embodiment of this invention. It is a control system block diagram of the manufacturing apparatus shown in FIG. It is a perspective view of the electronic component which an external electrode is formed in the end part. It is sectional drawing of the external electrode of the electronic component shown in FIG.
- FIG. 23 (A) and 23 (B) show the first step of intaglio printing the ground electrode
- FIG. 23 (A) is a view seen from the longitudinal direction X1 of FIG. 21, and
- FIG. 23 (B) is a short portion of FIG. 21.
- 24 (A) and 24 (B) show the second step of intaglio printing the ground electrode
- FIG. 24 (A) is a view seen from the longitudinal direction X1 of FIG. 21, and FIG. 24 (B) is a short portion of FIG. 21.
- FIG. 25 (A) and 25 (B) show a third step of intaglio printing the ground electrode
- FIG. 25 (A) is a view seen from the longitudinal direction X1 of FIG. 21
- FIG. 25 (B) is a short portion of FIG. 21. It is a figure seen from the hand direction Y1.
- FIG. 1 schematically shows an electronic component main body 1 having an end portion 2 and a dip layer 3 of a conductive paste formed uniformly on a main surface 5A of a dip layer forming portion, for example, a surface plate 5. Shown.
- the end portion 2 includes an end face 2A followed by a side surface 2B and a corner portion 2C between the end face 2A and the side surface 2B.
- the method for manufacturing an electronic component according to the present embodiment in which an electrode is formed on an end portion 2 of the electronic component main body 1 to manufacture the electronic component includes at least the first to fourth steps described below.
- the direction in which the electronic component body 1 intersects the main surface 5A of the surface plate 5 relative to the surface plate 5 (dip layer 3), for example, the normal of the main surface 5A. It is moved in the first direction A (Z- direction) parallel to the direction (vertical direction in FIG. 2). In this way, the end 2 of the electronic component body 1 is immersed in the dip layer 3.
- the electronic component main body 1 is lowered in the first direction (Z ⁇ direction), but the surface plate 5 may be raised in the first direction (Z + direction), and the electronic component main body 1 and the surface plate may be raised. Both of 5 may be moved in the first direction in which they move away from each other.
- Second step (evacuation step after application) After that, in the second step shown in FIG. 3, the electronic component main body 1 and the dip layer 3 are moved in the second direction B (Z + direction) which is relatively opposite to the first direction A, and the electronic component main body 1 is moved. The end 2 of 1 is pulled away from the dip layer 3. As a result, the conductive paste 4 is applied to the end 2 of the electronic component body 1 to form the electronic component body 1.
- the electronic component body 1 is raised in the second direction (Z + direction), but the surface plate 5 may be lowered in the first direction (Z ⁇ direction), or the electronic component body 1 and the surface plate may be lowered. Both of 5 may be moved in a second direction in which they move away from each other.
- the conductive paste 4 applied to the end face 2A of the electronic component main body 1 is formed from the broken line 4A.
- the lower excess paste material (hereinafter referred to as excess paste material 4A) is removed by a paste removing member, for example, a wire rod 6.
- the wire rod 6 may be of any type as long as it is tensioned and stretched, and for example, a piano wire or a copper wire can be preferably used.
- the paste removing member 6 may be any member as long as it can scrape off excess paste material 4A by relative contact movement.
- the paste removing member 6 is not limited to the wire rod, but may be a first plate material such as a blade or a second plate material having a through hole penetrated in the thickness direction. The edge of the first plate material and the edge of the through hole provided in the second plate material can scrape off the excess paste material 4A.
- the paste removing member 6 is horizontally moved in the third direction C (X + direction), but the electronic component main body 1 may be horizontally moved in the third direction (X ⁇ direction), or the electronic component. Both the main body 1 and the paste removing member 6 may be moved in a third direction opposite to each other.
- the conductive paste 4 applied to the end portion 2 of the electronic component main body 1 is connected to the dip layer 3 on the surface plate 5, that is, the pastes 3 and 4 are connected by stringing 3A. It is carried out when it is in the state of being.
- the reason why this third step is necessary will be described with reference to FIGS. 5 (A) to 5 (C).
- 5 (A) to 5 (C) show changes in the film thickness of the conductive paste 4 on the side surfaces 2B and the corners 2C of the electronic component main body 1 during the stringing process or after the natural elimination of stringing.
- 5 (A) to 5 (C) show states in which the heights L1 to L3 of the end face 2A of the electronic component main body 1 in the second step are different from those of the surface plate 5.
- the stringing 3A connecting the dip layer 3 and the conductive paste 4 after coating is relatively thick and short.
- the stringing 3A connecting the dip layer 3 and the conductive paste 4 after coating is relatively thin and long.
- the film thicknesses of the side surfaces 2B and the corners 2C in the state shown in FIG. 5 (A) are T S1 and TC1
- the film thicknesses in the state shown in FIG. 5 (B) are T S2 and TC2 .
- T S3 and TC 3 be the film thicknesses in the state shown in (C). Relations each film thickness is, T S1> T S2> T S3, and the T C1> T C2> T C3 .
- the film thickness T C of thickness T S and corner portions 2C of the side surface 2B depending on the height L1 ⁇ L3 of the end face 2A of the second step, thinner higher.
- the conductive paste 4 applied to the end portion 2 of the electronic component main body 1 is pulled by the stringer 3A during the second step, moves to the stringer 3A, and is absorbed.
- the relationship of the film thickness of the end face 2A after the excess paste 4A below the broken line is removed is TE1 > TE2 .
- the third step and the fourth step are carried out at the same time, for example, in the presence of the stringer 3A.
- the third step and the fourth step are the paste with the electronic component body 1 so that the paste removing member 6 crosses the electronic component body 1 at least once in a plan view seen from the normal direction with respect to the main surface 5A of the surface plate 5.
- the removal member 6 is relatively moved in the third direction C.
- the linear paste removing member 6 which is one wire rod 6-1 crosses the electronic component body 1 only once, that is, only moves relative to the arrow C direction shown in FIG. 4, and the broken line shown in FIG.
- the lower excess conductive paste 4A is removed.
- the first step is performed in the presence of the stringer 3A as shown in FIG. 5 (A) or FIG. 5 (B). Since it was compulsory three steps towards carrying out the fourth step, it is possible to secure larger thickness T E of the end face 2A, the film thickness T C of thickness T S and corner portions 2C of the side surface 2B. In other words, at the end of the third step, the film thickness T E of the end face 2A, since the film thickness T C of thickness T S and corner portions 2C of the side surface 2B is substantially fixed, first in the presence of stringing 3A It is important to start the three steps.
- the paste 4 on the end face 2A of the electronic component body 1 shown in FIG. 5C without the stringing 3A is shaped by being brought into contact with a surface plate, for example, by a conventional blot step.
- the paste 4 on the end surface 2A of the electronic component main body 1 shown in FIG. 5C becomes substantially uniform with the excess paste 4A smoothed by the surface plate.
- the thickness of the paste 4 of the end face 2A is thickened result extra paste 4A is flattened, it becomes thicker than T C3 of the example corners 2C.
- the film thickness difference of the paste 4 applied to the end face 2A and the side surface 2B shown in FIG. 5A or FIG. 5B can be reduced.
- the third step (paste cutting step) and the fourth step (excess paste removing step) are not limited to those simultaneous as in the present embodiment, and the fourth step is performed after the completion of the third step. May be carried out.
- the third step for example, it is only necessary to bring the paste cutting member (cutting means) into contact with the thread pulling 3A to forcibly cut the thread pulling 3A, and in the fourth step, the excess paste is removed by the paste removing member.
- the fourth step which is carried out separately from the third step, does not necessarily use the paste removing member 6, but may use, for example, a conventional blot step of transferring excess paste to a surface plate.
- the cutting means may be a solid paste cutting member or a fluid such as a gas or a liquid capable of cutting an excess paste by contact, particularly a fluid jet-injected.
- the electronic component main body 1 and the paste removing member 6 are relative to the third direction C parallel to the main surface 5A of the platen 5 (in other words, the direction parallel to the end surface 2A of the electronic component main body 1).
- the excess paste 4A of the conductive paste 4 applied to the end surface 2A of the electronic component main body 1 is removed together with the stringing 3A by the paste removing member 6.
- the conductive paste 4 applied to the end surface 2A of the electronic component main body 1 is flattened as shown by the broken line in FIG. 4, and the film thickness is made uniform.
- the paste removing member is not limited to the wire rod 6, and may be a plate material 7 having slits or through holes as described later, or a plate material having no slits or through holes.
- the conductive paste 4 flattened on the end surface 2A of the electronic component body 1 and the side surface 2B and the corner portion 2C of the electronic component body 1 are secured relatively thickly.
- the shape and film thickness of the conductive paste layer 4B coated and formed on the end portion 2 of the electronic component main body 1 are determined by the conductive paste 4.
- the fifth step shown in FIG. 6 may be carried out if necessary.
- the paste removing member 6 is moved relative to the electronic component main body 1 in the fourth direction D (X ⁇ direction) opposite to the third direction C (X + direction) shown in FIG. In this way, by relatively moving the paste removing member 6 back and forth once or more across the electronic component main body 1 in a plan view, the flatness of the conductive paste layer 4B applied to the end surface 2A of the electronic component main body 1 is further improved. You may.
- each of the first to fourth steps is performed on a plurality of electronic component main bodies 1 arranged in a single column or a plurality of electronic component main bodies 1 arranged in a plurality of columns and a plurality of rows.
- one wire rod 6 extending in, for example, the Y direction (fifth direction) is provided in the XY plane parallel to the main surface 5A of the surface plate 5 shown in FIGS. 1 to 4.
- a jig (not shown) holds M (M is an integer of 2 or more) electronic component bodies 1-1 to 1-M along the Y direction.
- the wire rod 6 is moved in the third direction C relative to the M electronic component main bodies 1, and the third and fourth steps are simultaneously performed on the M electronic component main bodies 1-1 to 1-M. be able to.
- M ⁇ N (N is an integer of 2 or more) electronic component bodies 1-1 to 1-M ⁇ N is held by a jig (not shown).
- the paste removing member 6 shown in FIG. 8 has N (N is an integer of 2 or more) wires 6-1 to 6-N in parallel with, for example, the Y direction (fifth direction).
- the N wires 6-1 to 6-N are supported by, for example, the frame body 6A.
- N wires 6-1 to 6-N are moved in the third direction C relative to M ⁇ N electronic component bodies 1-1 to NM, and M ⁇ N electronic component bodies For 1-1 to NM, the third step and the fourth step can be carried out at the same time.
- M ⁇ N electronic component bodies 1-1 to NM do not interfere with N wire rods 6-1 to 6-N and the frame body 6A in a plan view, as shown in FIG. It is carried out by setting it in the position.
- M ⁇ N electronic component bodies 1-1 to NM are relatively reciprocated between the upper and lower parts of the N wires 6-1 to 6-N. It will be carried out.
- FIG. 9 shows an example in which a plate material 7A having a slit 7-1 is used as the paste removing member 7 instead of the wire rod 6 of FIG.
- FIG. 10 shows an example in which a plate material 7B having N slits 7-1 to 7-N is used as the paste removing member 7 instead of the N wire rods 6-1 to 6-N in FIG.
- the paste removing member 7 has one slit 7-1 or N slits 7-1 to 7-N penetrating in the thickness direction of the plate material.
- Each of the slits 7-1 to 7-N is formed to a size that allows M electronic component bodies 1 arranged along the Y direction to pass before and after coating.
- each slit may be changed to M through holes.
- a paste removing member 7 which is a plate material 7C having M ⁇ N through holes 7C1 may be used.
- M through holes 7C1 may be used instead of the slit 7-1 in FIG. 9.
- the shape of the through hole 7C1 may be similar to or non-similar to the end face 2A of the electronic component main body 1.
- a dip of a conductive paste formed on the surface 5A of the surface plate 5 is formed on the end portion 2 (see FIG. 1) including the end faces 2A of each of the plurality of electronic component main bodies 1 held on the carrier plate 20.
- the carrier plate 20 supporting the plurality of electronic component main bodies 1 is located above the paste removing member 7B and the surface plate 5.
- the carrier plate 20 moves relatively downward from the position shown in FIG. 12 toward the surface plate 5 in the first direction A (Z-direction).
- FIG. 13 shows a coating state in which the end portion 2 of the electronic component main body 1 to which the slit 7-k is added is in contact with the dip layer 3 of the paste material formed on the surface plate 5.
- Second step (evacuation step after application) After that, the carrier plate 20 moves upward in the second direction (Z + direction) relative to the surface plate 5, so that the plurality of electronic component main bodies 1 supported by the carrier plate 20 are as shown in FIG. , With the conductive paste 4 applied to the end portion 2, re-passes through the corresponding slit 7-k.
- the conductive paste 4 applied to the end portion 2 of the electronic component main body 1 is connected to the dip layer 3 to form a stringing 3A shown in FIG. 5 (A) or FIG. 5 (B).
- the extra paste material 4A containing the paste material to be used is contained.
- the paste removing step carried out after the coating step is carried out in order to remove the excess paste material 4A in the coated conductive paste 4 and to form the conductive paste layer 4B separated from the stringing 3A. Will be done.
- FIG. 15 shows the third step and the fourth step
- FIG. 16 is a partially enlarged view of FIG.
- the paste removing step is started when the conductive paste 4 applied to the end portion 2 of the electronic component main body 1 is connected to the dip layer 3 via the stringer 3A.
- the third step and the fourth step are carried out by horizontally moving the paste removing member 7 in the third direction C (X ⁇ direction) relative to the carrier plate 20.
- 15 and 16 show a state in which the electronic component main body 1 that has passed through the slit 7-k is relatively horizontally moved to the left. At this time, the bottom surface of the conductive paste 4 is leveled by the top surface 7B1 of the plate material 7B.
- the excess paste material 4A hanging below the upper surface 7B1 of the plate material 7B is scraped off by the first edge 7B2 of the slit 7-k.
- the excess paste material 4A scraped off falls onto the dip layer 3 on the surface plate 5 through the slit 7-k. Therefore, the excess paste material 4A can be recovered together with the used dip layer 3.
- the conductive paste layer 4B applied to the end portion 2 of the electronic component main body 1 is leveled by the upper surface 3B1 of the plate 210, and the excess paste material 4A is slit.
- the conductive paste 4 applied to the end face 2A becomes a shaped conductive paste layer 4B.
- the conductive paste layer 4B is secured relatively thickly on the side surface 2B and the corner portion 2C of the electronic component main body 1.
- the fifth step may be carried out in the same manner as in FIG.
- the electronic component main body 1 is pasted and removed in the fourth direction D (X + direction) opposite to the third direction C (X ⁇ direction), which is the relative movement direction in the third step and the fourth step. It is moved relative to the member 6.
- the contour edge for partitioning the slit 7-k includes the second edge 7B3 facing the first edge 7B2.
- the second edge 7B3 can come into contact with the lower surface of the conductive paste layer 4B to further shape the conductive paste layer 4B.
- the flatness of the conductive paste layer 4B applied to the end surface 2A of the electronic component main body 1 can be further improved.
- FIG. 17 shows a manufacturing device 10 used in the embodiment of the present embodiment
- FIG. 18 shows a control system block diagram.
- the manufacturing apparatus 10 includes a carrier plate (jig) 20, a moving mechanism 50, a surface plate 5, and paste removing members 6 and 7 according to any one of FIGS. 4, 7, and 8 to 10. ..
- the orthogonal triaxial directions are X, Y, and Z. Note that FIG. 17 shows a state in which the conductive paste layer 4B is formed on the electronic component main body 1 after the completion of the first to fourth steps.
- the carrier plate (jig) 20 that hangs and holds the plurality of electronic component main bodies 1 holds the plurality of electronic component main bodies 1.
- the carrier plate 20 is detachably supported by the jig fixing plate 30.
- the base 40 is fixed above the jig fixing plate 30, and the surface plate 5 is arranged below the carrier plate 20.
- the fixed or movable paste removing member 6 (7) is arranged between the carrier plate 20 and the surface plate 5.
- the paste removing member 6 (7) and the surface plate 5 are fixed, and the jig fixing plate 30 is movable.
- the jig fixing plate 30 may be fixed and the paste removing member 6 (7) and the surface plate 5 may be movable. Further, it is preferable that the distance between the paste removing member 6 (7) and the surface plate 5 can be adjusted.
- the surface plate 5 is provided with a squeegee unit 8 provided with a squeegee 8A and a blade 8B.
- the squeegee unit 8 moves on the surface plate 5.
- the blade 8B By moving the blade 8B, the squeegee unit 8 can form a dip layer 3 having a height H by the conductive paste 3B on the surface 5A of the surface plate 5.
- the squeegee unit 8 can scrape and recover the dip layer 3 from the surface 5A of the surface plate 5.
- the base 40 is provided with a moving mechanism 50 for moving the jig fixing plate 30.
- the moving mechanism 50 can include an X-axis drive unit 60, a Y-axis drive unit 70, and a Z-axis drive unit 80.
- the jig fixing plate 30, the carrier plate 20, and the plurality of electronic component main bodies 1 have a Z-axis relative to the surface plate 5 and the paste removing member 6 (7) by the moving mechanism 50. It is moved in the direction and is movable along the XY plane parallel to the main surface 5A of the surface plate 5.
- the moving mechanism 50 includes a first moving mechanism capable of relative movement in the Z-axis direction and a second moving mechanism capable of relative movement on the XY plane.
- the X-axis drive unit 60 can be composed of an X table that can move in the X-axis direction with respect to the base 40 along the X-axis guide 62.
- the Y-axis drive unit 70 can be configured as a Y table that can move in the Y-axis direction with respect to the X-axis drive unit 60 along the Y-axis guide 72.
- the Z-axis drive unit 80 is fixed to, for example, the Y-axis drive unit 70, and the Z-axis 82 can be moved in the Z-axis direction.
- the jig fixing plate 30 is fixed to the Z axis 82. Note that in FIG. 17, for example, a motor and its driving force transmission mechanism, which are driving sources for the X, Y, and Z axes, are not shown.
- the manufacturing apparatus 10 has a control unit 90 that controls an X-axis drive unit 60, a Y-axis drive unit 70, and a Z-axis drive unit 80.
- the control unit 90 is connected to an operation input unit 92 such as a keyboard.
- the control unit 90 includes a storage unit 91, and the storage unit 91 stores operation information input via the operation input unit 92, a program registered in advance, and the like.
- the control unit 90 controls the X-axis drive unit 60, the Y-axis drive unit 70, and the Z-axis drive unit 80 according to the data and the program stored in the storage unit 91.
- FIG. 19 shows an electronic component 1A manufactured by the above-mentioned manufacturing method
- FIG. 20 shows a cross section of an electrode 4B formed on the electronic component main body 1.
- the size of the electronic component 1A to which the present invention is applied is not particularly limited, but it is suitable for the electronic component 1A that has been miniaturized according to downsizing.
- the rectangle referred to here includes not only a rectangle in which the corner where the two sides intersect is exactly 90 °, but also a substantially rectangle in which the corner is curved or chamfered. Needless to say, the present invention can be applied to electronic components 1A other than the rectangular cross section.
- the thickness T1 of the electrode 4B formed on the end face 2A can be made substantially uniform by carrying out the third step and the fourth step. Further, by carrying out the third step and the fourth step, the film thickness T2 on the side surface 2B can be sufficiently secured. For example, both the thicknesses T1 and T2 are secured to be, for example, 40 ⁇ m or more, and the film thickness T2, which was about half of T1 in the past, can be doubled. Further, by carrying out the third step and the fourth step, the film thickness T3 of the electrode 4B of the corner portion 2C can be doubled from about 10 ⁇ m in the past to, for example, 20 ⁇ m. These film thicknesses T1 to T3 are clearly distinguished from the film thicknesses after the conventional blot step.
- FIG. 21 shows an electronic component 100 manufactured by the third embodiment of the present invention.
- the electronic component 100 is, for example, a chip three-terminal capacitor.
- the electronic component 100 includes two terminal through electrodes 102A and 102B provided at both ends of the electronic component body 101 in the longitudinal direction X1 and two ground electrodes provided at both ends of the electronic component body 101 in the lateral direction Y1. 103 and.
- the chip three-terminal capacitor 100 is mounted by connecting the three terminals 102A, 102B, and 103 on the conductive pattern of the substrate 110 with solder 112. At that time, if a difference D as shown in FIG. 22 occurs in the thickness of the through electrodes 102A and 102B and the ground electrode 103, a connection failure occurs. In the example of FIG. 22, the ground electrode 103 is not connected to the substrate 110 due to its thin thickness. Therefore, it is necessary to eliminate the difference D shown in FIG.
- the through electrodes 102A and 102B are formed by the coating process shown in FIG. 2, whereas the ground electrode 103 is formed by intaglio printing shown in FIGS. 23 to 26, for example, in the lateral direction Y1 of the electronic component main body 101. It is locally formed at the end of the.
- the paste dip layer 130 is formed in the dip layer forming portion, for example, the groove 122 formed in the main surface 121 of the rubber plate 120.
- the electronic component main body 101 held by the jig 20 shown in FIG. 17 is moved relative to the rubber plate 120 to move the electronic component.
- the electronic component main body 101 When the main body 101 compresses and deforms the rubber plate 120, the electronic component main body 101 is locally immersed in the dip layer 130 in the groove 122. After that, in the third step shown in FIGS. 25A and 25B, the electronic component main body 101 held by the jig 20 shown in FIG. 17 is moved relative to the rubber plate 120, and the electronic component main body 101 is moved relative to the rubber plate 120. The contact between the rubber plate 120 and the rubber plate 120 is released. As a result, as shown in FIG. 21, the ground electrode 103 is locally formed at both ends of the electronic component main body 101 in the lateral direction Y1.
- the coating process shown in FIG. 2 is performed twice or three times.
- the film thickness ⁇ 3 of the corner portion 2C was secured by coating three times. Then, the film thickness ⁇ 2 on the side surface 2B shown in FIG. 20 becomes excessively thick, and the difference D shown in FIG. 22 may occur.
- the coating method of the first embodiment shown in FIGS. 1 to 4 is applied.
- the film thickness ⁇ 3 of the corner portion 2C can be secured without necessarily performing the double coating or the triple coating. Therefore, the difference D shown in FIG. 22 can be eliminated.
- the present invention does not exclude double coating or triple coating.
- the final coating step may be carried out as shown in FIGS. 1 to 4.
- the present invention can be applied to the manufacture of various electronic components, not limited to those shown in FIGS. 19 to 21, and the end portion of the electronic component body on which the paste layer is formed is shown in FIG. 21, for example. As described above, it may be the end portion of the electronic component main body 101 in the longitudinal direction X1 or the end portion of the electronic component main body 101 in the lateral direction Y1.
- the paste removing members 6 and 7 vibrate the paste removing members 6 and 7 online or offline by injecting a jet stream of gas or liquid or the like in addition to or in place of the paste removing members 6 and 7. Therefore, a cleaning step of removing the adhering paste material and cleaning it may be carried out.
- Jig fixing plate 20 ... Jig (carrier plate), 30 ... Jig fixing plate, 40 ... Board, 50 ... Moving mechanism, 60, 70 ... Horizontal drive unit, 80 ... Vertical drive unit, 90 ... Control unit, 91 ... Storage unit, 92 ... Operation input unit, 100 ... Electronic component (chip three-terminal condenser), 101 ... Electronic component body, 102A, 102B ... Through electrode, 103 ... Ground electrode, 110 ... Substrate, 112 ... Solder, 120 ... Dip layer forming unit ( Rubber plate), 121 ... Main surface, 122 ... Groove, 130 ... Dip layer, A (Z- or Z +) ... 1st direction, B (Z + or Z-) ... 2nd direction, C (X + or X-) ... 3rd direction, D (X- or X +) ... 4th direction, Y ... 5th direction
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Abstract
Description
電子部品本体を導電性ペーストのディップ層に対して相対的に第1方向に移動させて、前記電子部品本体の端部を前記ディップ層に浸漬させる第1工程と、
前記電子部品本体を前記ディップ層に対して相対的に、前記第1方向とは逆向きの第2方向に移動させて、前記電子部品本体の前記端部を前記ディップ層から引き離す第2工程と、
前記電子部品本体の前記端部に塗布された前記導電性ペーストと前記ディップ層とのつながりを、前記電子部品本体の前記端部が前記ディップ層から引き離されることで自然に切断される前に、固体または流体である切断手段との接触により強制的に切断する第3工程と、
前記第3工程以降に、前記電子部品本体の前記端部に塗布された前記導電性ペーストのうち、余分なペースト材を除去する第4工程と、
を有する電子部品の製造方法に関する。
複数の電子部品本体の各々の端部に電極を形成する電子部品の製造装置において、
導電性ペーストのディップ層が形成されるディップ層形成部と、
前記複数の電子部品本体の各々の前記端部が前記ディップ層と対向するように、前記複数の電子部品本体を保持する治具と、
前記複数の電子部品本体の各々の前記端部に塗布された前記導電性ペーストから余分なペーストを除去するペースト除去部材と、
前記治具を前記ディップ層形成部に対して相対的に、前記ディップ層形成部の主面の法線方向に沿って移動させる第1移動機構と、
前記治具を前記ペースト除去部材に対して相対的に、前記ディップ層形成部の前記主面と平行な方向に沿って移動させる第2移動機構と、
を有し、
前記第1移動機構は、前記治具を前記ディップ層形成部に対して相対的に前記法線方向に沿った第1方向に移動させて、前記複数の電子部品本体の各々の前記端部を前記ディップ層に浸漬させ、その後、前記治具を前記ディップ層形成部に対して相対的に前記第1方向とは逆向きの第2方向に移動させて、前記電子部品本体の前記端部を前記ディップ層から引き離し、
前記第2移動機構は、前記複数の電子部品本体の各々の前記端部に塗布された前記導電性ペーストが前記ディップ層とつながった状態にあるときに、前記治具を前記ペースト除去部材に対して相対的に前記ディップ層形成部の前記主面と平行な第3方向に移動させて、前記余分なペースト及び記ディップ層から切り離された導電性ペースト層を、前記電子部品本体の前記端部に形成する電子部品の製造装置に関する。
図1に、端部2を有する電子部品本体1と、ディップ層形成部例えば定盤5の主面5A上に均一厚に形成された導電性ペーストのディップ層3と、を模式的に示す。端部2は、端面2Aとそれに続く側面2Bと、端面2Aと側面2Bとの間の角部2Cとを含む。電子部品本体1の端部2に電極を形成して電子部品を製造する本実施形態に係る電子部品の製造方法は、以下に説明する第1~第4工程を少なくとも含む。
第1工程は、図2に示すように、電子部品本体1を定盤5(ディップ層3)に対して相対的に、定盤5の主面5Aと交差する方向例えば主面5Aの法線方向(図2の上下方向)と平行な第1方向A(Z-方向)に移動させる。こうして、電子部品本体1の端部2をディップ層3に浸漬させる。図2では、電子部品本体1を第1方向(Z-方向)に下降させているが、定盤5を第1方向(Z+方向)に上昇させても良いし、電子部品本体1及び定盤5の双方を両者が互いに遠ざかる第1方向に移動させても良い。
その後、図3に示す第2工程では、電子部品本体1とディップ層3とを相対的に第1方向Aとは逆方向となる第2方向B(Z+方向)に移動させて、電子部品本体1の端部2をディップ層3から引き離す。それにより、電子部品本体1の端部2に導電性ペースト4が塗布されて形成される。図3では、電子部品本体1を第2方向(Z+方向)に上昇させているが、定盤5を第1方向(Z-方向)に下降させても良いし、電子部品本体1及び定盤5の双方を、両者が互いに遠ざかる第2方向に移動させても良い。
その後、図4に示す第3工程(ペースト切断工程)及び第4工程(余分なペースト除去工程)の同時工程では、電子部品本体1の端面2Aに塗布された導電性ペースト4から、破線4Aより下方の余分なペースト材(以降、余分なペースト材4Aと称する)を、ペースト除去部材例えば線材6により除去する。線材6は、張力が付与されて張り渡されるものであれば種類は問わず、例えばピアノ線や銅線等を好適に用いることができる。ペースト除去部材6は、相対的な接触移動により余分なペースト材4Aを掻き取ることができる部材であればよい。ペースト除去部材6は、線材に限らず、ブレード等の第1板材や、あるいは厚さ方向で貫通された貫通孔を有する第2板材であってもよい。第1板材のエッジや第2板材に設けられた貫通孔のエッジが余分なペースト材4Aを掻き取ることができる。なお、図4ではペースト除去部材6を第3方向C(X+方向)に水平移動させているが、電子部品本体1を第3方向(X-方向)に水平移動させても良いし、電子部品本体1及びペースト除去部材6の双方を両者が互いに逆向きの第3方向に移動させても良い。
第4工程実施後に、必要により図6に示す第5工程を実施しても良い。図6では、図4に示す第3方向C(X+方向)とは逆方向の第4方向D(X-方向)に、電子部品本体1に対してペースト除去部材6を相対的に移動させる。こうして、平面視で電子部品本体1を横切ってペースト除去部材6を1往復以上相対移動させることで、特に電子部品本体1の端面2Aに塗布された導電性ペースト層4Bの平坦性をより向上させても良い。
本発明の第2実施形態は、一列で配置される複数の電子部品本体1、あるいは複数列複数行で配列される複数の電子部品本体1について、第1~第4工程の各々を同時に実施する。図7では、図1~図4に示す定盤5の主面5Aと平行なX-Y平面内で、例えばY方向(第5方向)に延びる1本の線材6が設けられる。図示しない治具に、Y方向に沿ってM(Mは2以上の整数)個の電子部品本体1-1~1-Mを保持する。線材6をM個の電子部品本体1に対して相対的に第3方向Cに移動させて、M個の電子部品本体1-1~1-Mついて第3工程及び第4工程を同時に実施することができる。一方、図8では、図1~図4に示す定盤5の主面5Aと平行なX-Y平面内で、M×N(Nは2以上の整数)個の電子部品本体1-1~1-M×Nが図示しない治具に保持される。図8に示すペースト除去部材6は、例えばY方向(第5方向)と平行にN(Nは2以上の整数)本の線材6-1~6-Nを有する。N本の線材6-1~6-Nは、例えば枠体6Aに支持される。N本の線材6-1~6-NをM×N個の電子部品本体1-1~N-Mに対して相対的に第3方向Cに移動させて、M×N個の電子部品本体1-1~N-Mついて第3工程及び第4工程を同時に実施することができる。第1及び第2工程は、M×N個の電子部品本体1-1~N-Mが、平面視でN本の線材6-1~6-N及び枠体6Aと干渉しない図8に示す位置に設定して実施される。第1及び第2工程は、N本の線材6-1~6-Nの上方と下方との間でM×N個の電子部品本体1-1~N-Mが相対的に往復移動するようにして実施される。
塗布工程とは、キャリアプレート20に保持された複数の電子部品本体1の各々の端面2Aを含む端部2(図1参照)を、定盤5の表面5Aに形成された導電性ペーストのディップ層3に浸漬させて、複数の電子部品本体1の各々の端部2に導電性ペーストを塗布する工程である。
その後、キャリアプレート20が定盤5に対して相対的に第2方向(Z+方向)に上昇移動することにより、図14に示すように、キャリアプレート20に支持された複数の電子部品本体1は、端部2に塗布された導電性ペースト4と共に、対応するスリット7-kを再通過する。この第2工程の終了時では、電子部品本体1の端部2に塗布された導電性ペースト4は、ディップ層3と繋がることで図5(A)または図5(B)に示す糸引き3Aとなるペースト材を含む余分なペースト材4Aを含んでいる。塗布工程の後に実施されるペースト除去工程は、塗布された導電性ペースト4中の余分なペースト材4Aが除去され、かつ、糸引き3Aと切り離された導電性ペースト層4Bを形成するために実施される。
図15は第3工程及び第4工程を示し、図16は図15の部分拡大図である。ペースト除去工程は、電子部品本体1の端部2に塗布された導電性ペースト4が糸引き3Aを介してディップ層3と繋がっている状態のときに開始される。第3工程及び第4工程は、ペースト除去部材7をキャリアプレート20に対して相対的に第3方向C(X-方向)に水平移動させることで実施される。図15及び図16は、スリット7-kを再通過した電子部品本体1を相対的に左に水平移動させた状態を示している。このとき、導電性ペースト4の底面は板材7Bの上面7B1で均される。板材7Bの上面7B1よりも下方に垂れ下がっている余分なペースト材4Aは、スリット7-kの第1エッジ7B2で掻き取られる。掻き取られた余分なペースト材4Aは、スリット7-kを介して定盤5上のディップ層3に落下する。よって、余分なペースト材4Aは、使用済みのディップ層3と共に回収することができる。
第4工程実施後に、図6と同様にして第5工程を実施しても良い。図16では、第3工程及び第4工程での相対的移動方向である第3方向C(X-方向)とは逆方向の第4方向D(X+方向)に、電子部品本体1をペースト除去部材6に対して相対的に移動させる。ここで、スリット7-kを区画する輪郭エッジには、第1エッジ7B2と対向する第2エッジ7B3が含まれる。第4工程は、第2エッジ7B3が導電性ペースト層4Bの下面と接触して、導電性ペースト層4Bをさらに整形することができる。それにより、特に電子部品本体1の端面2Aに塗布された導電性ペースト層4Bの平坦性をより向上させることができる。
図17は本実施形態の実施に用いられる製造装置10を示し、図18は制御系ブロック図を示している。この製造装置10は、キャリアプレート(治具)20と、移動機構50と、定盤5と、図4、図7、図8~図10のいずれかのペースト除去部材6,7と、を有する。図17では直交三軸方向をX,Y,Zとする。なお図17は、第1~第4工程終了後の電子部品本体1に、導電性ペースト層4Bが形成された状態を示している。
図19は上述した製造方法により製造された電子部品1Aを示し、図20は電子部品本体1に形成された電極4Bの断面を示している。ここで、本発明が適用される電子部品1Aの大きさに特に制約はないが、ダウンサイジングに従い超小型化された電子部品1Aに好適である。超小型の電子部品1Aとしては、図19に示す例えば矩形(正方形または長方形)断面の一辺の最大長さをL1とし、矩形断面と直交する方向の長さをL2としたとき、L1=500μm以下でかつL2=1000μm以下である。好ましくはL1=300μm以下でかつL2=600μm以下、さらに好ましくはL1=200μm以下でかつL2=400μm以下、さらに好ましくはL1=125μm以下でかつL2=250μm以下である。なお、ここでいう矩形とは、二辺が交わるコーナーが厳密に90°であるものの他、コーナーが湾曲又は面取りされた略矩形も含むものとする。なお、本発明は矩形断面以外の電子部品1Aにも適用できることは言うまでもない。
図20において、本実施形態によれば、第3工程及び第4工程の実施により端面2Aに形成された電極4Bの厚さT1を実質的に均一にすることができる。また、第3工程及び第4工程の実施により、側面2Bの膜厚T2も十分に確保することができる。例えば、厚さT1及びT2共に例えば40μm以上が確保され、従来はT1の半分程度であった膜厚T2を倍増させることができる。さらに、第3工程及び第4工程の実施により、角部2Cの電極4Bの膜厚T3も、従来10μm程度であったのが例えば20μmと、倍増させることができる。これらの膜厚T1~T3は、従来のブロット工程後の膜厚と明確に区別される。
図21は、本発明の第3実施形態により製造される電子部品100を示している。電子部品100は、例えばチップ三端子コンデンサーである。電子部品100は、電子部品本体101の長手方向X1の両端部に設けられた二端子の貫通電極102A,102Bと、電子部品本体101の短手方向Y1の両端部に設けられた2つのグランド電極103と、を有する。
Claims (14)
- 電子部品本体を導電性ペーストのディップ層に対して相対的に第1方向に移動させて、前記電子部品本体の端部を前記ディップ層に浸漬させる第1工程と、
前記電子部品本体を前記ディップ層に対して相対的に、前記第1方向とは逆向きの第2方向に移動させて、前記電子部品本体の前記端部を前記ディップ層から引き離す第2工程と、
前記電子部品本体の前記端部に塗布された前記導電性ペーストと前記ディップ層とのつながりを、前記電子部品本体の前記端部が前記ディップ層から引き離されることで自然に切断される前に、固体または流体である切断手段との接触により強制的に切断する第3工程と、
前記第3工程以降に、前記電子部品本体の前記端部に塗布された前記導電性ペーストのうち、余分なペースト材を除去する第4工程と、
を有することを特徴とする電子部品の製造方法。 - 請求項1において、
前記切断手段としてペースト除去部材を用い、
前記電子部品本体の前記端部に塗布された前記導電性ペーストが前記ディップ層とつながった状態にあるときに、前記電子部品本体を前記ペースト除去部材に対して相対的に、前記電子部品本体の前記端部の端面と平行な第3方向に移動させることにより、前記第3工程及び前記第4工程が同時に実施されて、前記余分なペースト及び前記ディップ層から切り離された導電性ペースト層を、前記電子部品本体の前記端部に形成することを特徴とする電子部品の製造方法。 - 請求項2において、
前記ペースト除去部材は、線材、第1板材のエッジ、または厚さ方向で貫通孔が形成された第2板材の前記貫通孔のエッジを、前記余分なペーストに接触させることを特徴とする電子部品の製造方法。 - 請求項2において、
前記電子部品本体を前記ペースト除去部材に対して相対的に、前記第3方向とは逆向きの第4方向に移動させて、前記ペースト除去部材により前記導電性ペースト層の一部のペーストを除去して、前記導電性ペースト層を整形する第5工程をさらに有することを特徴とする電子部品の製造方法。 - 請求項2または4において、
前記第1工程及び前記第2工程の各々は、前記電子部品本体を含む複数の電子部品本体を保持する治具を前記ディップ層に対して相対的に、前記第1方向及び前記第2方向のいずれか一方に移動させる工程を含み、
前記第3工程及び前記第4工程は、前記治具を前記ペースト除去部材に対して相対的に、前記第3方向に移動させる工程を含むことを特徴とする電子部品の製造方法。 - 請求項5において、
前記治具は、前記電子部品本体の前記端面と平行な面内で前記第3方向と交差する第5方向に沿ってM(Mは2以上の整数)個の前記電子部品本体を保持し、
前記第1工程~前記第4工程の各々は、前記M個の電子部品本体に対して同時に実施されることを特徴とする電子部品の製造方法。 - 請求項6において、
前記ペースト除去部材は、前記電子部品本体の前記端面と平行な板材と、前記板材の厚さ方向で貫通して形成されたスリットと、を含み、前記スリットは、前記第5方向に沿って延び、
前記第1工程及び前記第2工程の各々は、前記M個の電子部品本体の前記端部を、前記スリットを介して前記板材の上方と下方との間で相対的に移動させる工程を含み、
前記第3工程及び前記第4工程は、前記M個の電子部品本体の前記端部から前記余分なペーストを前記スリットの第1エッジにより同時に除去する工程を含むことを特徴とする電子部品の製造方法。 - 請求項4に従属する請求項7において、
前記第5工程は、前記導電性ペースト層の前記一部のペーストを前記スリットの第2エッジで除去することを特徴とする電子部品の製造方法。 - 請求項6において、
前記ペースト除去部材は、前記第5方向に沿って延びる線材または板材を含み、
前記第1工程及び前記第2工程の各々は、前記M個の電子部品本体の前記端部を、前記線材または前記板材の高さ位置に対する上方と下方との間で相対的に移動させる工程を含み、
前記第3工程及び前記第4工程は、前記M個の電子部品本体の前記端部から前記余分なペーストを前記線材または前記板材のエッジにより除去する工程を含むことを特徴とする電子部品の製造方法。 - 請求項6において、
前記治具は、前記第3方向に沿ってN(Nは2以上の整数)個の前記電子部品本体を保持し、
前記第1工程~前記第4工程の各々は、M×N個の電子部品本体に対して同時に実施されることを特徴とする電子部品の製造方法。 - 請求項10において、
前記ペースト除去部材は、前記M×N個の電子部品本体の前記端面と平行な板材と、前記板材の厚さ方向で貫通して形成されたN個のスリットと、を含み、前記N個のスリットは、前記第5方向に沿って平行に延び、かつ前記第3方向で間隔をあけて設けられ、
前記第1工程及び前記第2工程は、前記M×N個の電子部品本体の前記端部を、前記N個のスリットを介して前記板材の上方と下方との間で相対的に移動させる工程を含み、
前記第3工程及び前記第4工程は、前記M×N個の電子部品本体の前記端部から前記余分なペーストを前記N個のスリットの第1エッジにより除去する工程を含むことを特徴とする電子部品の製造方法。 - 請求項4に従属する請求項11において、
前記第5工程は、前記導電性ペースト層の前記一部のペーストを前記N個のスリットの第2エッジにより除去することを特徴とする電子部品の製造方法。 - 請求項10において、
前記ペースト除去部材は、前記第5方向に沿って延び、前記第3方向で間隔をあけて設けられたN個の線材またはN個の板材を含み、
前記第1工程及び前記第2工程の各々は、前記M×N個の電子部品本体の前記端部を、前記N個の線材または前記N個の板材の同一高さ位置に対する上方と下方との間で相対的に移動させる工程を含み、
前記第3工程及び前記第4工程は、前記M×N個の電子部品本体の前記端部から前記余分なペーストを前記N個の線材または前記N個の板材のエッジにより除去する工程を含むことを特徴とする電子部品の製造方法。 - 複数の電子部品本体の各々の端部に電極を形成する電子部品の製造装置において、
導電性ペーストのディップ層が塗布形成されるディップ層形成部と、
前記複数の電子部品本体の各々の前記端部が前記ディップ層と対向するように、前記複数の電子部品本体を保持する治具と、
前記複数の電子部品本体の各々の前記端部に塗布された前記導電性ペーストから余分なペーストを除去するペースト除去部材と、
前記治具を前記ディップ層形成部に対して相対的に、前記ディップ層形成部の主面の法線方向に沿って移動させる第1移動機構と、
前記治具を前記ペースト除去部材に対して相対的に、前記ディップ層形成部の前記主面と平行な方向に沿って移動させる第2移動機構と、
を有し、
前記第1移動機構は、前記治具を前記ディップ層形成部に対して相対的に前記法線方向に沿った第1方向に移動させて、前記複数の電子部品本体の各々の前記端部を前記ディップ層に浸漬させ、その後、前記治具を前記ディップ層形成部に対して相対的に前記第1方向とは逆向きの第2方向に移動させて、前記電子部品本体の前記端部を前記ディップ層から引き離し、
前記第2移動機構は、前記複数の電子部品本体の各々の前記端部に塗布された前記導電性ペーストが前記ディップ層とつながった状態にあるときに、前記治具を前記ペースト除去部材に対して相対的に前記ディップ層形成部の前記主面と平行な第3方向に移動させて、前記余分なペースト及び記ディップ層から切り離された導電性ペースト層を、前記電子部品本体の前記端部に形成することを特徴とする電子部品の製造装置。
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TW202207250A (zh) | 2022-02-16 |
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