WO2018003000A1 - 回路形成方法 - Google Patents
回路形成方法 Download PDFInfo
- Publication number
- WO2018003000A1 WO2018003000A1 PCT/JP2016/069079 JP2016069079W WO2018003000A1 WO 2018003000 A1 WO2018003000 A1 WO 2018003000A1 JP 2016069079 W JP2016069079 W JP 2016069079W WO 2018003000 A1 WO2018003000 A1 WO 2018003000A1
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- WIPO (PCT)
- Prior art keywords
- wiring
- metal
- containing liquid
- metal ink
- discharged
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- 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
- H05K3/10—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern
- H05K3/12—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using thick film techniques, e.g. printing techniques to apply the conductive material or similar techniques for applying conductive paste or ink patterns
- H05K3/1283—After-treatment of the printed patterns, e.g. sintering or curing methods
-
- 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
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/09—Use of materials for the conductive, e.g. metallic pattern
- H05K1/092—Dispersed materials, e.g. conductive pastes or inks
- H05K1/097—Inks comprising nanoparticles and specially adapted for being sintered at low temperature
-
- 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
- H05K3/10—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern
- H05K3/12—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using thick film techniques, e.g. printing techniques to apply the conductive material or similar techniques for applying conductive paste or ink patterns
- H05K3/1241—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using thick film techniques, e.g. printing techniques to apply the conductive material or similar techniques for applying conductive paste or ink patterns by ink-jet printing or drawing by dispensing
- H05K3/125—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using thick film techniques, e.g. printing techniques to apply the conductive material or similar techniques for applying conductive paste or ink patterns by ink-jet printing or drawing by dispensing by ink-jet 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
- H05K2203/10—Using electric, magnetic and electromagnetic fields; Using laser light
- H05K2203/107—Using laser light
-
- 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
- H05K2203/11—Treatments characterised by their effect, e.g. heating, cooling, roughening
- H05K2203/1131—Sintering, i.e. fusing of metal particles to achieve or improve electrical conductivity
-
- 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
- H05K2203/11—Treatments characterised by their effect, e.g. heating, cooling, roughening
- H05K2203/1173—Differences in wettability, e.g. hydrophilic or hydrophobic areas
-
- 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
- H05K2203/14—Related to the order of processing steps
- H05K2203/1476—Same or similar kind of process performed in phases, e.g. coarse patterning followed by fine patterning
-
- 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
- H05K3/46—Manufacturing multilayer circuits
- H05K3/4644—Manufacturing multilayer circuits by building the multilayer layer by layer, i.e. build-up multilayer circuits
- H05K3/4664—Adding a circuit layer by thick film methods, e.g. printing techniques or by other techniques for making conductive patterns by using pastes, inks or powders
Definitions
- the present invention relates to a circuit forming method for forming a circuit using a discharge device that discharges a metal-containing liquid containing metal fine particles.
- the metal-containing liquid is discharged to the formation position of the second wiring. That is, the metal-containing liquid is discharged over the upper surface of the first wiring and the formation position of the second wiring on the upper surface of the base material.
- the metal-containing liquid discharged on the upper surface of the wiring and the metal-containing liquid discharged on the upper surface of the substrate are different. There is a risk of separation.
- a disconnected wiring that is, a second wiring that is not connected to the first wiring is formed, which is not preferable.
- the present invention has been made in view of such circumstances, and an object of the present invention is to form a circuit in which the first wiring and the second wiring are appropriately connected.
- a circuit forming method of the present invention uses a discharge device that discharges a metal-containing liquid containing metal fine particles, and a first wiring and a second wiring connected to the first wiring.
- a circuit forming method for forming a circuit including a first wiring, a first discharge step of discharging a metal-containing liquid to a position where the first wiring is to be formed, the first wiring, and the second wiring, The first firing step of forming the first wiring by firing the metal-containing liquid ejected in the first ejection step, except for the connection scheduled portion, and the second connection including the connection scheduled portion
- a second baking step for forming wiring for forming wiring.
- the circuit forming method of the present invention is a circuit including a first wiring and a second wiring connected to the first wiring by using a discharge device that discharges a metal-containing liquid containing metal fine particles.
- a first discharge step of discharging a metal-containing liquid to the formation position of the first wiring, and firing the metal-containing liquid discharged in the first discharge step In a third firing step of forming the first wiring, a third discharge step of discharging a metal-containing liquid to a connection planned portion between the first wiring and the second wiring, and the third discharge step
- a fourth discharge step By firing the metal-containing liquid discharged in the fourth discharge step, a fourth discharge step of discharging the metal-containing liquid at a formation planned position of the second wiring including the discharged metal-containing liquid, Forming the second wiring connected to the first wiring; 4, characterized in that it comprises a firing step.
- the circuit forming method of the present invention is a circuit including a first wiring and a second wiring connected to the first wiring by using a discharge device that discharges a metal-containing liquid containing metal fine particles.
- the circuit forming method of the present invention uses a discharge device that discharges a metal-containing liquid containing metal fine particles, the first wiring, the second wiring connected to the first wiring, and the first wiring
- the connection planned portion of the first wiring is unfired, and the metal-containing liquid is discharged across the unfired connection planned portion and the formation planned position of the second wiring. That is, the metal-containing liquid is discharged over the upper surface of the unfired first wiring and the formation position of the second wiring on the upper surface of the base material. Since the wettability of the upper surface of the unfired first wiring is the same as the wettability of the upper surface of the substrate, the metal-containing liquid discharged onto the upper surface of the unfired wiring and the discharge onto the upper surface of the substrate The first wiring and the second wiring can be appropriately connected without being separated from the metal-containing liquid.
- the metal-containing liquid is discharged to the connection planned portion of the first wiring. Then, the metal-containing liquid is discharged across the metal-containing liquid and the formation position of the second wiring. Since the wettability of the upper surface of the discharged metal-containing liquid is equivalent to the wettability of the upper surface of the substrate, the metal-containing liquid discharged on the upper surface of the metal-containing liquid and the upper surface of the substrate were discharged. The first wiring and the second wiring can be appropriately connected without being separated from the metal-containing liquid.
- the clearance extends between the first wiring and the second wiring.
- the metal-containing liquid is discharged.
- the clearance is made smaller than the diameter of the metal-containing liquid droplets discharged by the discharge device. For this reason, the droplet of the metal-containing liquid discharged to the clearance is in a state straddling the first wiring and the second wiring. Since the droplet of the metal-containing liquid in a state straddling the first wiring and the second wiring is drawn toward both the first wiring and the second wiring, the first wiring and the second wiring It does not flow in any direction. As a result, the first wiring and the second wiring are maintained in a state of being connected by the droplets of the metal-containing liquid, and the first wiring and the second wiring can be appropriately connected. .
- the metal-containing liquid is put together in each clearance.
- the metal-containing liquid discharged and discharged into each clearance is baked together.
- the clearance is made smaller than the diameter of the metal-containing liquid droplets discharged by the discharge device.
- the steps of forming the wiring with a clearance, discharging the metal-containing liquid into the clearance of each wiring, and firing the metal-containing liquid are collectively performed. Is done. This makes it possible to efficiently execute each process and improve the throughput.
- FIG. 6 is a schematic diagram showing metal ink ejected to a first wiring formation scheduled position and metal ink ejected to the second wiring formation planned position in a state where there is a predetermined clearance with the metal ink. It is a schematic diagram which shows the 1st wiring and the 2nd wiring formed in the state with the 1st wiring and a predetermined clearance.
- FIG. 5 is a schematic diagram showing metal ink ejected to a projected formation position of a protruding portion and a first wiring, and metallic ink ejected to a planned formation position of a second wiring in a state where there is a predetermined clearance from the projected portion.
- FIG. 5 shows the 1st wiring containing a protrusion part, and the 2nd wiring formed in the state with a protrusion and predetermined
- FIG. 6 is a schematic diagram showing metal ink ejected to a position where a third wiring is to be formed in a state where there is a predetermined clearance.
- a first wiring including a protrusion, a second wiring formed with a predetermined clearance from the end of the first wiring, and a third wiring formed with a predetermined clearance from the protrusion. It is a schematic diagram which shows wiring.
- FIG. 1 shows a circuit forming device 10.
- the circuit forming apparatus 10 includes a transport device 20, a first modeling unit 22, a second modeling unit 24, and a control device (see FIG. 2) 26.
- the conveying device 20, the first modeling unit 22, and the second modeling unit 24 are disposed on the base 28 of the circuit forming device 10.
- the base 28 has a generally rectangular shape.
- the longitudinal direction of the base 28 is orthogonal to the X-axis direction
- the short direction of the base 28 is orthogonal to both the Y-axis direction, the X-axis direction, and the Y-axis direction.
- the direction will be described as the Z-axis direction.
- the transport device 20 includes an X-axis slide mechanism 30 and a Y-axis slide mechanism 32.
- the X-axis slide mechanism 30 has an X-axis slide rail 34 and an X-axis slider 36.
- the X-axis slide rail 34 is disposed on the base 28 so as to extend in the X-axis direction.
- the X-axis slider 36 is held by an X-axis slide rail 34 so as to be slidable in the X-axis direction.
- the X-axis slide mechanism 30 has an electromagnetic motor (see FIG. 2) 38, and the X-axis slider 36 moves to an arbitrary position in the X-axis direction by driving the electromagnetic motor 38.
- the Y axis slide mechanism 32 includes a Y axis slide rail 50 and a stage 52.
- the Y-axis slide rail 50 is disposed on the base 28 so as to extend in the Y-axis direction, and is movable in the X-axis direction.
- One end of the Y-axis slide rail 50 is connected to the X-axis slider 36.
- a stage 52 is held on the Y-axis slide rail 50 so as to be slidable in the Y-axis direction.
- the Y-axis slide mechanism 32 has an electromagnetic motor (see FIG. 2) 56, and the stage 52 moves to an arbitrary position in the Y-axis direction by driving the electromagnetic motor 56.
- the stage 52 moves to an arbitrary position on the base 28 by driving the X-axis slide mechanism 30 and the Y-axis slide mechanism 32.
- the stage 52 includes a base 60, a holding device 62, and a lifting device (see FIG. 2) 64.
- the base 60 is formed in a flat plate shape, and a substrate is placed on the upper surface.
- the holding device 62 is provided on both sides of the base 60 in the X-axis direction. The both edges in the X-axis direction of the substrate placed on the base 60 are sandwiched between the holding devices 62, so that the substrate is fixedly held.
- the lifting device 64 is disposed below the base 60 and lifts the base 60.
- the 1st modeling unit 22 is a unit which models wiring on the board
- the first printing unit 72 has an inkjet head (see FIG. 2) 76, and ejects metal ink in a linear manner onto the substrate 70 placed on the base 60.
- the metal ink is obtained by dispersing metal fine particles in a solvent.
- the inkjet head 76 discharges a conductive material from a plurality of nozzles by, for example, a piezo method using a piezoelectric element.
- the drying unit 73 has an infrared lamp (see FIG. 2) 77.
- the infrared lamp 77 is a device that irradiates the metal ink ejected on the substrate 70 with infrared rays, and the solvent contained in the metal ink is vaporized by the irradiation of infrared rays, and the metal ink is in a dry state.
- the firing unit 74 includes a laser irradiation device (see FIG. 2) 78.
- the laser irradiation device 78 is a device that irradiates a metal ink discharged onto the substrate 70 with a laser, and the metal ink irradiated with the laser is baked to form a wiring.
- the firing of the metal ink is a phenomenon in which, by applying energy, the solvent is vaporized, the metal fine particle protective film is decomposed, etc., and the metal fine particles are contacted or fused to increase the conductivity. is there. And metal wiring is formed by baking metal ink.
- the second modeling unit 24 is a unit that models a resin layer on the substrate 70 placed on the base 60 of the stage 52, and includes a second printing unit 84 and a curing unit 86. .
- the second printing unit 84 has an inkjet head (see FIG. 2) 88 and discharges an ultraviolet curable resin onto the substrate 70 placed on the base 60.
- the ink jet head 88 may be, for example, a piezo method using a piezoelectric element, or a thermal method in which a resin is heated to generate bubbles and ejected from a nozzle.
- the curing unit 86 includes a flattening device (see FIG. 2) 90 and an irradiation device (see FIG. 2) 92.
- the flattening device 90 is for flattening the upper surface of the ultraviolet curable resin discharged onto the substrate 70 by the inkjet head 88. By scraping with a blade, the thickness of the UV curable resin is made uniform.
- the irradiation device 92 includes a mercury lamp or LED as a light source, and irradiates the ultraviolet curable resin discharged onto the substrate 70 with ultraviolet rays. Thereby, the ultraviolet curable resin discharged on the board
- the control device 26 includes a controller 120 and a plurality of drive circuits 122 as shown in FIG.
- the plurality of drive circuits 122 are connected to the electromagnetic motors 38 and 56, the holding device 62, the lifting device 64, the inkjet head 76, the infrared lamp 77, the laser irradiation device 78, the inkjet head 88, the flattening device 90, and the irradiation device 92.
- the controller 120 includes a CPU, a ROM, a RAM, and the like, is mainly a computer, and is connected to a plurality of drive circuits 122. Thereby, the operation of the transport device 20, the first modeling unit 22, and the second modeling unit 24 is controlled by the controller 120.
- a circuit pattern is formed on the substrate 70 with the above-described configuration. Specifically, the substrate 70 is set on the base 60 of the stage 52, and the stage 52 is moved below the second modeling unit 24. And in the 2nd modeling unit 24, as shown in FIG. 3, the resin laminated body 130 is formed on the board
- the inkjet head 88 discharges an ultraviolet curable resin onto the upper surface of the substrate 70 in a thin film shape. Subsequently, when the ultraviolet curable resin is discharged in the form of a thin film, the ultraviolet curable resin is flattened by the flattening device 90 so that the film thickness of the ultraviolet curable resin becomes uniform in the curing unit 86. Then, the irradiation device 92 irradiates the thin film ultraviolet curable resin with ultraviolet rays. As a result, a thin resin layer 132 is formed on the substrate 70.
- the inkjet head 88 discharges the ultraviolet curable resin in a thin film shape onto the thin resin layer 132.
- the thin film ultraviolet curable resin is flattened by the flattening device 90, and the irradiation device 92 irradiates the ultraviolet curable resin discharged in the thin film shape with ultraviolet rays, so that the thin film resin layer 132 is formed on the thin film resin layer 132.
- a thin resin layer 132 is laminated. In this manner, the discharge of the ultraviolet curable resin onto the thin resin layer 132 and the irradiation with the ultraviolet rays are repeated, and the resin laminate 132 is formed by laminating the plurality of resin layers 132.
- the stage 52 is moved below the first modeling unit 22.
- the ink jet head 76 ejects the metal ink on the upper surface of the resin laminate 130 in a line shape according to the wiring formation scheduled position, that is, the circuit pattern.
- the infrared lamp 77 irradiates the metal ink with infrared rays. Thereby, the solvent contained in the metal ink is vaporized, and the metal ink is in a dry state.
- the laser irradiation apparatus 78 irradiates a laser to the dried metal ink.
- the metal ink is baked, and the wiring 136 is formed on the resin laminate 130 as shown in FIG.
- the resin laminate 130 is formed of the ultraviolet curable resin, and the wiring 136 is formed of the metal ions, whereby a circuit pattern is formed on the substrate 70.
- another wiring that is, a second wiring may be connected to the wiring 136 depending on the circuit pattern pattern.
- the metal ink is formed at the position where the second wiring is to be formed in a state where the inkjet head 76 overlaps the position where the wiring 136 is to be connected. 138 is discharged. Then, the second wiring is formed by drying and sintering the metal ink. However, there is a possibility that the second wiring is disconnected at the connection point to the wiring 136.
- the metal ink 138 when the metal ink 138 is discharged to the formation position of the second wiring in a state where it overlaps the connection position to the wiring 136 in order to form the second wiring, the upper surface of the wiring 136 and the resin are formed. Metal ink 138 is ejected across the top surface of the laminate 130. Note that the upper surface of the wiring 136 has high wettability, and the contact angle is 5 degrees or less. On the other hand, the upper surface of the resin laminate 130 has low wettability, and the contact angle is about 25 degrees. Therefore, the discharged metal ink 138 on the upper surface of the wiring 136 spreads out and the metal ink 138 discharged on the resin laminate 130 is drawn toward the wiring 136.
- the metal ink 138 discharged onto the resin laminate 130 flows toward the wiring 136, and as shown in FIG. 6, the discharged metal ink 138 on the upper surface of the wiring 136 and the upper surface of the resin laminate 130.
- the discharged metal ink 138 may be separated. Then, when the separated metal ink 138 is baked, a second wiring that is disconnected at a connection position to the wiring 136 is formed.
- the first wiring and the second wiring connected to the first wiring are formed according to a technique different from the conventional technique.
- the metal ink 150 is ejected by the inkjet head 76 to the position where the first wiring is to be formed. Since the inkjet head 76 ejects the metal ink 150 in the form of droplets, the ejected metal ink 150 is illustrated as a circle.
- the metal ink 150 is in a dry state.
- the metal ink 150 before drying is illustrated in black, and the metal ink after drying is illustrated in gray. Therefore, the metal ink 150 before drying becomes the dried metal ink 152 as shown in FIG. 8 by irradiation with infrared rays.
- the dried metal ink 152 is irradiated with laser by the laser irradiation device 78, and the metal ink 152 is baked.
- the entire metal ink 152 in a dry state is not irradiated with the laser, and the laser is irradiated onto the metal ink 152 except for a portion where the first wiring and the second wiring are to be connected.
- the metal ink 152 is maintained in a dry state in the planned connection portion between the first wiring and the second wiring, and the metal ink 152 other than the planned connection portion is baked, A first wiring 156 is formed.
- the fired metal ink, that is, the wiring is shown in white.
- the metallic ink is applied to the planned connection portion between the first wiring and the second wiring and the formation position of the second wiring by the inkjet head 76.
- 150 is discharged. That is, the metal ink 150 is ejected across the upper surface of the metal ink 152 in FIG. 9 and the formation position of the second wiring on the upper surface of the resin laminate 130.
- the fired metal ink that is, the upper surface of the wiring has high wettability, but the upper surface of the dried metal ink 152 has wettability equivalent to the wettability of the upper surface of the resin laminate 130.
- one of the metal ink 150 ejected on the upper surface of the metal ink 152 and the metal ink 150 ejected on the upper surface of the resin laminate 130 does not flow toward the other, but is ejected on the upper surface of the metal ink 152.
- the metal ink 150 and the metal ink 150 discharged on the upper surface of the resin laminate 130 are not separated.
- the metal ink 150 discharged onto the upper surface of the metal ink 152 and the metal ink 150 discharged onto the upper surface of the resin laminate 130 are continuously maintained in a connected state.
- the metal ink 150 is dried by being irradiated with infrared rays, and in the baking unit 74, the dried metal ink 152 is irradiated with a laser.
- the second wiring 158 connected to the first wiring 156 is formed. In this way, the connection portion of the first wiring 156 is unfired, and the metal ink 150 is ejected across the connection planned portion and the formation position of the second wiring. It is possible to appropriately connect the second wiring.
- the circuit forming apparatus 10 it is possible to form the first wiring and the second wiring connected to the first wiring in accordance with the second method different from the first method described above. It is. Specifically, as in the first method, in the first printing unit 72, as shown in FIG. 7, the metal ink 150 is ejected to the formation position of the first wiring by the inkjet head 76, and further, the drying unit At 73, the entire metal ink 150 is irradiated with infrared rays by the infrared lamp 77. As a result, the ejected metal ink 150 becomes a dried metal ink 152 as shown in FIG.
- the laser irradiation device 78 irradiates the entire metal ink 152 in a dry state with the laser. Thereby, as shown in FIG. 12, the whole metal ink 152 is baked, and the first wiring 156 is formed.
- the metal ink 150 is ejected by the inkjet head 76 to the connection planned portion between the first wiring 156 and the second wiring 158. That is, as shown in FIG. 13, the metal ink 150 is discharged onto the upper surface of the first wiring 156 where the second wiring 158 is scheduled to be connected.
- the drying unit 73 the discharged metal ink 150 is irradiated with infrared rays. As a result, as shown in FIG. 9, the upper surface of the first wiring 156 is covered with the dried metal ink 152 in the connection planned portion.
- the metallic ink is applied to the planned connection portion between the first wiring and the second wiring and the formation position of the second wiring by the inkjet head 76.
- 150 is discharged. That is, the metal ink 150 is ejected across the upper surface of the dried metal ink 152 in FIG. 9 and the planned formation position of the second wiring on the upper surface of the resin laminate 130.
- the metal ink 150 is ejected across both the metal ink 152 and the resin laminate 130 having the same wettability, the metal ink 150 ejected on the upper surface of the metal ink 152 and the resin laminate The metal ink 150 discharged on the upper surface of the ink 130 is not separated and is maintained in a connected state.
- the metal ink 150 is irradiated with infrared rays, whereby the metal ink 150 is dried. Further, in the baking unit 74, the dried metal ink 152 is irradiated with a laser. As a result, as shown in FIG. 11, the second wiring 158 connected to the first wiring 156 is formed. As described above, after the first wiring 156 is formed, the metal ink 150 is ejected to the connection planned portion of the first wiring 156, and the metal ink 150 is dried. By discharging the metal ink 150 across the wiring formation scheduled position, the first wiring and the second wiring can be appropriately connected.
- the circuit forming apparatus 10 can form the first wiring and the second wiring connected to the first wiring in accordance with a third method different from the two methods described above. is there. Specifically, in the first printing unit 72, the metal ink 150 is ejected to the position where the first wiring is to be formed by the inkjet head 76. Further, as shown in FIG. 14, the metal ink 150 is applied to the position where the second wiring is to be formed in the state where there is a predetermined clearance X between the connection portion between the first wiring and the second wiring, and the inkjet head 76. Is discharged. Note that the predetermined clearance X is shorter than the diameter Y of the droplets of the metal ink 150 ejected by the inkjet head 76.
- the metal ink 150 is irradiated with infrared rays, whereby the metal ink 150 is dried. Further, in the baking unit 74, the dried metal ink 152 is irradiated with a laser. As a result, as shown in FIG. 15, the first wiring 156 and the second wiring 158 that are separated by a predetermined clearance X are formed.
- the metal ink 150 is ejected by the inkjet head 76 into the clearance between the first wiring 156 and the second wiring 158.
- the diameter Y of the droplet of the metal ink 150 ejected by the inkjet head 76 is longer than the clearance X between the first wiring 156 and the second wiring 158, the droplet of the metal ink 150 is the first droplet.
- the wiring 156 and the second wiring 158 are straddled. The droplets of the metal ink 150 in a state of straddling the first wiring 156 and the second wiring 158 are attracted toward both the first wiring 156 and the second wiring 158 that easily spread.
- the droplets of the metal ink 150 are attracted from both ends in the radial direction with a substantially uniform force, they do not flow toward either the first wiring 156 or the second wiring 158. Thus, the first wiring 156 and the second wiring 158 are maintained in a state where they are connected by the droplets of the metal ink 150.
- the metal ink 150 is dried by being irradiated with infrared rays, and in the baking unit 74, the dried metal ink 152 is irradiated with a laser. As a result, as shown in FIG. 11, the first wiring 156 and the second wiring 158 are connected. As described above, after the first wiring 156 and the second wiring 158 are formed in a state where there is a predetermined clearance, the metal is formed so as to straddle the first wiring 156 and the second wiring 158 in the clearance. By discharging the ink 150 and drying and baking the metal ink 150, the first wiring and the second wiring can be appropriately connected.
- the second wiring 158 is connected to the end portion of the first wiring 156, but the second wiring 158 may be connected to a portion different from the end portion of the first wiring 156. is there. Specifically, for example, as illustrated in FIG. 17, the second wiring 158 may be connected to the first wiring 156 in a T shape between both end portions of the first wiring 156. In such a case, the first wiring 156 is formed with a protruding portion that protrudes toward the second wiring 158, and the second wiring 158 is connected to the protruding portion. At this time, by applying the first method described above, the first wiring 156 and the second wiring 158 are connected in a T shape.
- the ink jet head 76 discharges the metal ink 150 to the position where the first wiring is to be formed.
- the metal ink 150 is ejected so as to protrude not only at the position where the first wiring is to be formed but also toward the position where the second wiring is to be formed.
- a portion protruding toward the formation position of the second wiring may be referred to as a protruding portion 160 in some cases.
- the width dimension of the protruding portion 160 that is, the dimension in the direction orthogonal to the protruding direction is the same as the width dimension of the second wiring 158.
- the drying unit 73 infrared rays are irradiated by the infrared lamp 77 on the entire metal ink 150 discharged by the inkjet head 76.
- the entire ejected metal ink 150 becomes a dried metal ink 152 as shown in FIG.
- the metal ink 152 in a dried state is irradiated with laser by the laser irradiation device 78, and the metal ink 152 is baked.
- the entire metal ink 152 in a dry state is not irradiated with the laser, and the metal ink 152 excluding the protrusion 160 is irradiated with the laser.
- the metal ink 152 is maintained in a dry state at the protruding portion 160, and the metal ink 152 other than the protruding portion 160 is baked to form the first wiring 156.
- the metal ink 150 is ejected by the inkjet head 76 to the protruding portion 160 and the position where the second wiring is to be formed. That is, the metal ink 150 is ejected across the upper surface of the metal ink 152 of the protrusion 160 in FIG. 20 and the formation position of the second wiring on the upper surface of the resin laminate 130.
- the metal ink 150 is ejected across both the metal ink 152 and the resin laminate 130 having the same wettability, the metal ink 150 ejected on the upper surface of the metal ink 152 and the resin laminate The metal ink 150 discharged on the upper surface of the ink 130 is not separated and is maintained in a connected state.
- the metal ink 150 is irradiated with infrared rays, whereby the metal ink 150 is dried. Further, in the baking unit 74, the dried metal ink 152 is irradiated with a laser. As a result, as shown in FIG. 17, the second wiring 158 in a state of being connected to the first wiring 156 in a T shape is formed. As described above, the protrusion 160 is formed in the first wiring 156, and the protrusion 160 functions as a connection planned portion between the first wiring 156 and the second wiring 158, and the first described above. By applying this method, the first wiring 156 and the second wiring 158 can be appropriately connected in a T-shape.
- the second method described above can be applied. Specifically, in the same manner as in the first method, in the first printing unit 72, the metal ink 150 is ejected by the inkjet head 76 to the formation position of the first wiring and the protrusion 160 as shown in FIG. Further, in the drying unit 73, infrared rays are irradiated to the entire metal ink 150 by the infrared lamp 77. As a result, the discharged metal ink 150 becomes a dried metal ink 152 as shown in FIG. In the baking unit 74, the laser irradiation device 78 irradiates the entire metal ink 152 in a dry state with the laser. As a result, as shown in FIG. 22, the entire metal ink 152 is baked, and the first wiring 156 is formed.
- the metal ink 150 is ejected to the protrusion 160 by the inkjet head 76. That is, as shown in FIG. 23, the metal ink 150 is ejected onto the upper surface of the protruding portion 160 of the first wiring 156. At this time, the metal ink 150 spreads only on the upper surface of the protruding portion 160 and has the same width as the width of the protruding portion 160.
- the drying unit 73 the discharged metal ink 150 is irradiated with infrared rays. As a result, as shown in FIG. 20, the upper surface of the first wiring 156 is covered with the metal ink 152 in a dry state at the protrusion 160.
- the metal ink 150 is ejected by the inkjet head 76 to the protruding portion 160 and the position where the second wiring is to be formed. That is, the metal ink 150 is ejected across the upper surface of the dried metal ink 152 in FIG. 20 and the formation position of the second wiring on the upper surface of the resin laminate 130.
- the metal ink 150 is ejected across both the metal ink 152 and the resin laminate 130 having the same wettability, the metal ink 150 ejected on the upper surface of the metal ink 152 and the resin laminate
- the metal ink 150 discharged on the upper surface of the ink 130 is not separated and is maintained in a connected state.
- the metal ink 150 is irradiated with infrared rays, whereby the metal ink 150 is dried. Further, in the baking unit 74, the dried metal ink 152 is irradiated with a laser. As a result, as shown in FIG. 17, the second wiring 158 in a state of being connected to the first wiring 156 in a T shape is formed. As described above, the protrusion 160 is formed in the first wiring 156, and the protrusion 160 functions as a connection-scheduled portion between the first wiring 156 and the second wiring 158, and the second described above. By applying this method, the first wiring 156 and the second wiring 158 can be appropriately connected in a T-shape.
- the width of the metal ink 150 is the width of the protrusion 160, that is, the width of the second wiring 158. Accordingly, the width of the portion where the second wiring 158 is connected to the first wiring 156 can be made the same as the width of the second wiring 158.
- the third method described above can be applied. Specifically, in the first printing unit 72, as shown in FIG. 24, the ink jet 76 discharges the metal ink 150 to the planned formation position of the first wiring and the protrusion 160 in the first printing unit 72. Further, the metal ink 150 is ejected by the inkjet head 76 to the formation position of the second wiring in a state where the protrusion 160 and the predetermined clearance X are present. Note that the predetermined clearance X is shorter than the diameter Y of the droplets of the metal ink 150 ejected by the inkjet head 76.
- the metal ink 150 is irradiated with infrared rays, whereby the metal ink 150 is dried. Further, in the baking unit 74, the dried metal ink 152 is irradiated with a laser. As a result, as shown in FIG. 25, the first wiring 156 and the second wiring 158 that are separated by a predetermined clearance X are formed.
- the metal ink 150 is ejected by the inkjet head 76 to the clearance between the first wiring 156 and the second wiring 158.
- the droplets of the metal ink 150 are in a state of straddling the first wiring 156 and the second wiring 158 and are attracted from both ends in the radial direction with a substantially equal force.
- the second wiring 158 does not flow.
- the first wiring 156 and the second wiring 158 are maintained in a state where they are connected by the droplets of the metal ink 150.
- the metal ink 150 is dried by being irradiated with infrared rays, and in the baking unit 74, the dried metal ink 152 is irradiated with a laser.
- the first wiring 156 and the second wiring 158 are formed in a state of being connected in a T-shape.
- the protrusion 160 is formed in the first wiring 156, and the protrusion 160 functions as a connection planned portion between the first wiring 156 and the second wiring 158, and the third described above.
- the metal ink 150 is formed in each clearance after the three or more wires are formed with a clearance therebetween. By discharging, it becomes possible to improve the efficiency of the wiring connection process, improve the throughput, and the like.
- the metal ink 150 is ejected by the inkjet head 76 to the planned formation position of the first wiring and the protruding portion 160 as shown in FIG. 27.
- the metal ink 150 is discharged by the inkjet head 76 to the formation position of the second wiring in a state where the end of the metal ink 150 discharged to the formation position of the first wiring and the predetermined clearance X are present.
- the metal ink 150 is ejected by the inkjet head 76 to the position where the third wiring is to be formed with the protrusion 160 and the predetermined clearance X.
- the predetermined clearance X is shorter than the diameter Y of the droplets of the metal ink 150 ejected by the inkjet head 76.
- the metal ink 150 is irradiated with infrared rays, whereby the metal ink 150 is dried. Further, in the baking unit 74, the dried metal ink 152 is irradiated with a laser. As a result, as shown in FIG. 28, the first wiring 156, the second wiring 158, and the third wiring 162 that are separated by a predetermined clearance X are formed.
- the metal ink 150 is ejected to the clearance between the first wiring 156 and the second wiring 158, and the first wiring 156 and the third wiring.
- the metal ink 150 is ejected at a clearance from 162.
- the droplets of the metal ink 150 discharged to the clearance between the first wiring 156 and the second wiring 158 are in a state of straddling the first wiring 156 and the second wiring 158
- the droplets of the metal ink 150 discharged in the clearance between the first wiring 156 and the third wiring 162 are in a state of straddling the first wiring 156 and the third wiring 162.
- the first wiring 156 and the second wiring 158 are maintained in a state of being connected by the droplets of the metal ink 150, and the first wiring 156 and the third wiring 162 are not connected. And maintained in a connected state by the droplets of the metal ink 150.
- the metal ink 150 is dried by being irradiated with infrared rays, and in the baking unit 74, the dried metal ink 152 is irradiated with a laser.
- the first wiring 156 and the second wiring 158 are formed in a linearly connected state, and the first wiring 156 and the third wiring 162 are T It is formed in a state of being connected in a letter shape.
- the first wiring 156, the second wiring 158, and the third wiring 162 are formed together with a predetermined clearance X, and then combined into each clearance. Then, the metal ink 150 is discharged, and the wirings are connected together.
- the process of forming the wiring with a clearance, the discharging process of the metal ink 150 to the clearance of each wiring, and the baking process of the metal ink 150 discharged to the clearance are collectively performed. The This makes it possible to efficiently execute each process and improve the throughput.
- the ink jet head 76 is an example of a discharge device.
- the first wiring 156 is an example of a first wiring.
- the second wiring 158 is an example of a second wiring.
- the third wiring 162 is an example of a third wiring.
- the metal ink 150 ejected by the inkjet head 76 is baked by laser irradiation after being dried by infrared irradiation, but it is possible to omit infrared irradiation.
- the metal ink depending on the solvent contained in the metal ink, the metal ink that cannot be properly fired unless the metal ink is dried by infrared rays, or the metal ink does not have to be dried by infrared rays, There are metal inks that can be properly fired.
- the metal ink is baked by laser, but it may be baked by light such as pulsed light or flash lamp, or may be baked by heat of an electric furnace or the like.
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Abstract
Description
図1に回路形成装置10を示す。回路形成装置10は、搬送装置20と、第1造形ユニット22と、第2造形ユニット24と、制御装置(図2参照)26とを備える。それら搬送装置20と第1造形ユニット22と第2造形ユニット24とは、回路形成装置10のベース28の上に配置されている。ベース28は、概して長方形状をなしており、以下の説明では、ベース28の長手方向をX軸方向、ベース28の短手方向をY軸方向、X軸方向及びY軸方向の両方に直交する方向をZ軸方向と称して説明する。
回路形成装置10では、上述した構成によって、基板70の上に回路パターンが形成される。具体的には、ステージ52の基台60に基板70がセットされ、そのステージ52が、第2造形ユニット24の下方に移動される。そして、第2造形ユニット24において、図3に示すように、基板70の上に樹脂積層体130が形成される。樹脂積層体130は、インクジェットヘッド88からの紫外線硬化樹脂の吐出と、吐出された紫外線硬化樹脂への照射装置92による紫外線の照射とが繰り返されることにより形成される。
Claims (5)
- 金属微粒子を含有する金属含有液を吐出する吐出装置を用いて、第1の配線と、前記第1の配線に接続される第2の配線とを含む回路を形成する回路形成方法であって、
前記第1の配線の形成予定位置に金属含有液を吐出する第1吐出工程と、
前記第1の配線と前記第2の配線との接続予定部を除いて、前記第1吐出工程において吐出された金属含有液を焼成することで、前記第1の配線を形成する第1焼成工程と、
前記接続予定部を含む前記第2の配線の形成予定位置に、金属含有液を吐出する第2吐出工程と、
前記第2吐出工程において吐出された金属含有液を焼成することで、前記第1の配線に接続された前記第2の配線を形成する第2焼成工程と
を含む回路形成方法。 - 金属微粒子を含有する金属含有液を吐出する吐出装置を用いて、第1の配線と、前記第1の配線に接続される第2の配線とを含む回路を形成する回路形成方法であって、
前記第1の配線の形成予定位置に金属含有液を吐出する第1吐出工程と、
前記第1吐出工程において吐出された金属含有液を焼成することで、前記第1の配線を形成する第3焼成工程と、
前記第1の配線と前記第2の配線との接続予定部に、金属含有液を吐出する第3吐出工程と、
前記第3吐出工程において吐出された金属含有液を含む前記第2の配線の形成予定位置に、金属含有液を吐出する第4吐出工程と、
前記第4吐出工程において吐出された金属含有液を焼成することで、前記第1の配線に接続された前記第2の配線を形成する第4焼成工程と
を含む回路形成方法。 - 金属微粒子を含有する金属含有液を吐出する吐出装置を用いて、第1の配線と、前記第1の配線に接続される第2の配線とを含む回路を形成する回路形成方法であって、
前記第1の配線の形成予定位置に金属含有液を吐出する第1吐出工程と、
前記第1吐出工程において吐出された金属含有液を焼成することで、前記第1の配線を形成する第3焼成工程と、
前記第1の配線と前記第2の配線との接続予定部と、前記吐出装置により吐出された液滴の径より短いクリアランスのある状態で、前記第2の配線の形成予定位置に金属含有液を吐出する第5吐出工程と、
前記第5吐出工程において吐出された金属含有液を焼成することで、前記第1の配線と前記クリアランスの有る状態の前記第2の配線を形成する第5焼成工程と、
前記第1の配線と前記第2の配線とに跨るように、前記クリアランスに金属含有液を吐出する第6吐出工程と、
前記第6吐出工程において吐出された金属含有液を焼成することで、前記第1の配線と前記第2の配線とを接続する第6焼成工程と
を含む回路形成方法。 - 前記第2の配線が前記第1の配線の端部と異なる部分に接続される場合の前記回路形成方法において、
前記第1吐出工程が、
前記第1の配線の形成予定位置に金属含有液を吐出するとともに、前記接続予定部として、前記第1の配線の形成予定位置から前記第2の配線の形成予定位置に向かって突出するように、前記第2の配線の幅と同じ幅で金属含有液を吐出する請求項1ないし請求項3のいずれか1つに記載の回路形成方法。 - 金属微粒子を含有する金属含有液を吐出する吐出装置を用いて、第1の配線と、前記第1の配線に接続される第2の配線と、前記第1の配線と前記第2の配線との一方に接続される第3の配線とを含む回路を形成する回路形成方法であって、
前記第1の配線の形成予定位置に金属含有液を吐出する第1吐出工程と、
前記第1吐出工程において吐出された金属含有液を焼成することで、前記第1の配線を形成する第3焼成工程と、
前記第1の配線と前記第2の配線との接続予定部と、前記吐出装置により吐出された液滴の径より短いクリアランスのある状態で、前記第2の配線の形成予定位置に金属含有液を吐出する第5吐出工程と、
前記第5吐出工程において吐出された金属含有液を焼成することで、前記第1の配線と前記クリアランスの有る状態の前記第2の配線を形成する第5焼成工程と、
前記第1の配線と前記第2の配線との一方と前記第3の配線との接続予定部と、前記吐出装置により吐出された液滴の径より短いクリアランスのある状態で、前記第3の配線の形成予定位置に金属含有液を吐出する第7吐出工程と、
前記第7吐出工程において吐出された金属含有液を焼成することで、前記第1の配線と前記第2の配線との一方と前記クリアランスの有る状態の前記第3の配線を形成する第7焼成工程と、
前記第1の配線と前記第2の配線とに跨るように、前記クリアランスに金属含有液を吐出するとともに、前記第1の配線と前記第2の配線との一方と前記第3の配線とに跨るように、前記クリアランスに金属含有液を吐出する第8吐出工程と、
前記第8吐出工程において吐出された金属含有液を焼成することで、前記第1の配線と前記第2の配線とを接続するとともに、前記第1の配線と前記第2の配線との一方と前記第3の配線とを接続する第8焼成工程と
を含む回路形成方法。
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2016/069079 WO2018003000A1 (ja) | 2016-06-28 | 2016-06-28 | 回路形成方法 |
| JP2018524610A JP6680878B2 (ja) | 2016-06-28 | 2016-06-28 | 回路形成方法 |
| EP16907233.7A EP3478034A4 (en) | 2016-06-28 | 2016-06-28 | SWITCHING PROCESS |
| US16/307,082 US11006529B2 (en) | 2016-06-28 | 2016-06-28 | Circuit forming method |
| CN201680086909.0A CN109315066B (zh) | 2016-06-28 | 2016-06-28 | 电路形成方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2016/069079 WO2018003000A1 (ja) | 2016-06-28 | 2016-06-28 | 回路形成方法 |
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| Publication Number | Publication Date |
|---|---|
| WO2018003000A1 true WO2018003000A1 (ja) | 2018-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2016/069079 Ceased WO2018003000A1 (ja) | 2016-06-28 | 2016-06-28 | 回路形成方法 |
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| Country | Link |
|---|---|
| US (1) | US11006529B2 (ja) |
| EP (1) | EP3478034A4 (ja) |
| JP (1) | JP6680878B2 (ja) |
| CN (1) | CN109315066B (ja) |
| WO (1) | WO2018003000A1 (ja) |
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| US11622451B2 (en) | 2020-02-26 | 2023-04-04 | Io Tech Group Ltd. | Systems and methods for solder paste printing on components |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP3478034A1 (en) | 2019-05-01 |
| JPWO2018003000A1 (ja) | 2019-04-18 |
| US11006529B2 (en) | 2021-05-11 |
| CN109315066A (zh) | 2019-02-05 |
| EP3478034A4 (en) | 2019-07-03 |
| CN109315066B (zh) | 2022-04-01 |
| US20190150292A1 (en) | 2019-05-16 |
| JP6680878B2 (ja) | 2020-04-15 |
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