WO2010116819A1 - 電子部品の製造方法 - Google Patents
電子部品の製造方法 Download PDFInfo
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- WO2010116819A1 WO2010116819A1 PCT/JP2010/053241 JP2010053241W WO2010116819A1 WO 2010116819 A1 WO2010116819 A1 WO 2010116819A1 JP 2010053241 W JP2010053241 W JP 2010053241W WO 2010116819 A1 WO2010116819 A1 WO 2010116819A1
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- conductor
- insulator layer
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/0006—Printed inductances
- H01F17/0013—Printed inductances with stacked layers
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- 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
- H01F41/041—Printed circuit coils
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
- H01F27/292—Surface mounted devices
Definitions
- the present invention relates to a method for manufacturing an electronic component, and more particularly, to a method for manufacturing an electronic component including a laminate in which insulator layers are laminated.
- FIG. 12 is a perspective view showing a manufacturing process of the surface mount electronic component 501 described in Patent Document 1.
- FIG. 12 is a perspective view showing a manufacturing process of the surface mount electronic component 501 described in Patent Document 1.
- a mother laminated body 510 having a coil incorporated therein is manufactured. Specifically, a flat mother laminate 510 is produced by laminating a ceramic sheet and a conductor layer. Then, the mother laminate 510 is fired.
- a U-shaped groove 511 extending in a predetermined direction is formed in the mother laminated body 510.
- external electrodes 506 are formed around the groove 511 and its periphery.
- a conductive paste is applied and baked around the groove 511 and its periphery.
- the mother laminate 510 is cut to obtain a plurality of surface mount electronic components 501. According to the method for manufacturing the surface mount electronic component 501 as described above, it is possible to obtain the surface mount electronic component 501 that can be easily inspected for solderability and does not interfere with the insulation on the upper surface of the substrate.
- the external electrode 506 is formed on the mother laminate 510 after the mother laminate 510 is fired. Therefore, when the mother laminate 510 is fired, the shrinkage behavior of the external electrode 506 and the shrinkage behavior of the mother laminate 510 are different, and unnecessary stress is generated between the external electrode 506 and the mother laminate 510. End up. As a result, in the method for manufacturing the surface mount electronic component 501, the external electrode 506 may not sufficiently adhere to the mother laminate 510.
- an object of the present invention is to provide a method of manufacturing an electronic component that can suppress the peeling of the external electrode from the laminate.
- An electronic component manufacturing method includes a step of laminating a plurality of first insulator layers and a plurality of first conductor layers, and a plurality of first grooves extending in a predetermined direction. Forming a second insulator layer provided on the first insulator layer, an inner peripheral surface of the first groove, and the second insulator layer on the second insulator layer. Forming a second conductor layer serving as an external electrode so as to be electrically connected to the first conductor layer with respect to a region adjacent to the first groove; the first insulator layer; And a step of firing the first conductor layer and the second conductor layer.
- FIG. 2 is a top view and a cross-sectional structure diagram in the manufacturing process of the electronic component of FIG.
- FIG. 2 is a top view and a cross-sectional structure diagram in the manufacturing process of the electronic component of FIG.
- FIG. 2 is a top view and a cross-sectional structure diagram in the manufacturing process of the electronic component of FIG.
- FIG. 2 is a top view and a cross-sectional structure diagram in the manufacturing process of the electronic component of FIG.
- FIG. 2 is a top view and a cross-sectional structure diagram in the manufacturing process of the electronic component of FIG. 1.
- FIG. 2 is a top view and a cross-sectional structure diagram in the manufacturing process of the electronic component of FIG.
- FIG. 2 is a top view and a cross-sectional structure diagram in the manufacturing process of the electronic component of FIG. It is a perspective view of the electronic component which concerns on a modification.
- FIG. 10 is a top view and a cross-sectional structure diagram in the manufacturing process of the electronic component of FIG. 9. It is a perspective view of the electronic component which concerns on another modification.
- FIG. 10 is a perspective view showing a manufacturing process of the surface mount electronic component described in Patent Document 1.
- FIG. 1 is a perspective view of an electronic component 10a according to an embodiment of the present invention.
- the direction in which the insulator layers are stacked when the electronic component 10a is formed is defined as the upward direction in the stacking direction.
- the upward direction in the stacking direction is the downward direction in FIG.
- the stacking direction is defined as the z-axis direction.
- a direction along the long side of the electronic component 10a is defined as an x-axis direction
- a direction along the short side of the electronic component 10a is defined as a y-axis direction.
- the electronic component 10a includes a laminate 12 and external electrodes 14 (14a, 14b) as shown in FIG.
- the laminated body 12 is configured by laminating an insulator layer and a conductor layer, and has a rectangular shape.
- the laminated body 12 has a built-in coil L.
- the coil L is a schematic diagram and is different from the actual shape.
- the external electrode 14a is provided on the surface on the positive side in the z-axis direction of the multilayer body 12, and is constituted by the conductor layers 15a and 16a and is connected to the conductor layer 17a.
- the conductor layer 15a extends along the short side on the negative direction side in the x-axis direction on the surface on the positive direction side in the z-axis direction of the multilayer body 12.
- the conductor layer 16a extends along the side on the negative side in the x-axis direction of the multilayer body 12 along the side on the positive direction side in the z-axis direction.
- the conductor layer 17a extends in the y-axis direction at a position away from the conductor layer 15a by a predetermined distance on the negative direction side in the z-axis direction in the multilayer body 12.
- the conductor layer 15a and the conductor layer 16a are connected, and the conductor layer 16a and the conductor layer 17a are connected. Therefore, the external electrode 14a and the conductor layer 17a have a U-shape when viewed in plan from the y-axis direction.
- the external electrode 14b is provided on the surface on the positive side in the z-axis direction of the multilayer body 12, and is composed of the conductor layers 15b and 16b and is connected to the conductor layer 17b.
- the conductor layer 15 b extends along the short side on the positive direction side in the x-axis direction on the surface on the positive direction side in the z-axis direction of the multilayer body 12.
- the conductor layer 16b extends along the side on the positive direction side in the z-axis direction on the side surface on the positive direction side in the x-axis direction of the multilayer body 12.
- the conductor layer 17b extends in the y-axis direction at a position away from the conductor layer 15b by a predetermined distance to the negative direction side in the z-axis direction in the multilayer body 12.
- the conductor layer 15b and the conductor layer 16b are connected, and the conductor layer 16b and the conductor layer 17b are connected. Therefore, the external electrode 14b and the conductor layer 17b are U-shaped when viewed in plan from the y-axis direction.
- the coil L has a coil axis extending in the z-axis direction, and is connected between the external electrodes 14 a and 14 b.
- the coil L is actually comprised by the coil conductor and via-hole conductor mentioned later.
- a direction recognition mark 60 is provided on the surface of the laminate 12 on the negative side in the z-axis direction.
- the direction recognition mark 60 is a mark for confirming the direction of the electronic component 10a when the electronic component 10a is mounted.
- FIGS. 2 to 8 are a top view and a cross-sectional structure diagram in the manufacturing process of the electronic component 10a.
- the upper direction of FIGS. 2 to 8 is the positive direction of the z-axis direction.
- 2 to 8 show the manufacturing process of the plurality of electronic components 10a.
- 2 to 8 are cut lines L1 to L4 when cut into a plurality of electronic components 10a.
- the cut lines L1 and L2 extend in the y-axis direction, and the cut lines L3 and L4 extend in the x-axis direction.
- the cut line L1 is located on the negative direction side in the x-axis direction from the cut line L2, and the cut line L3 is located on the negative direction side in the y-axis direction from the cut line L4.
- an insulating layer 120 is formed by applying a ceramic insulating paste mainly composed of glass mixed with a blue paint.
- the insulator layer 120 has an area corresponding to a plurality of negative-side surfaces in the z-axis direction of the stacked body 12, and is a layer free from defects, blank portions, and the like.
- a resist film is formed in a region overlapping the region where the circular direction recognition mark 60 shown in FIG. 50a is formed.
- FIG. 2C light is irradiated (exposed) using the resist film 50a as a mask.
- regions other than the region where the resist film 50a is provided are cured by light.
- the resist film 50a is removed and development is performed to remove the insulator layer 120 in the region where the resist film 50a is provided, as shown in FIG.
- the insulator layer 20 provided with the opening O1 is formed.
- an insulating layer 22a is formed on the insulating layer 20 by applying a ceramic insulating paste mainly composed of glass.
- the opening O1 is filled with an insulating paste.
- the insulating paste used for forming the insulator layer 22a is not mixed with blue paint. Therefore, the direction recognition mark 60 shown in FIG. 1 is formed on the insulator layer 20.
- the conductor layer 124a has an area corresponding to a plurality of negative-side surfaces in the z-axis direction of the multilayer body 12, and is a layer that does not have any defects or blank portions.
- an opening O2 is provided in a region overlapping the region where the coil conductor 24a in FIG. 4C is formed when viewed in plan from the z-axis direction.
- a resist film 50b is formed.
- light is irradiated (exposed) using the resist film 50b as a mask.
- the resist film 50b is removed and development is performed to remove the conductor layer 124a in the region where the resist film 50b is provided, as shown in FIG. 4C.
- the coil conductor 24a is formed on the insulator layer 22a by the photolithography process shown in FIGS. 3C to 4C as described above.
- an insulator layer 22b provided with openings O3 and O4 is formed on the insulator layer 22a and the coil conductor 24a by a photolithography process.
- the openings O3 and O4 are located at both ends of the coil conductor 24a, and become via-hole conductors b1 and B1 shown in FIG. Note that the photolithography process in FIG. 5A is the same as the photolithography process described in FIGS. 2A to 3A, and thus the description thereof is omitted.
- the coil conductor 24b is formed on the insulator layer 22b by the photolithography process, and the via-hole conductors b1 and B1 are formed in the openings O3 and O4 of the insulator layer 22b. To do. Thereby, the coil conductors 24a and 24b are connected via the via-hole conductor b1.
- the photolithography process in FIG. 5B is the same as the photolithography process described in FIG. 3C to FIG.
- an insulator layer 22c provided with openings O5 and O6 is formed on the insulator layer 22b and the coil conductor 24b by a photolithography process.
- the opening O5 is located at one end of the coil conductor 24b, and becomes a via-hole conductor b2 shown in FIG. 6A by being filled with a conductive paste in a process described later.
- the opening O6 is provided so as to overlap with the via-hole conductor B1 when viewed in plan from the z-axis direction, and is filled with a conductive paste in a process described later, whereby the via-hole conductor B2 shown in FIG. It becomes.
- the photolithography process in FIG. 5C is the same as the photolithography process described with reference to FIGS.
- a coil conductor 24c is formed on the insulator layer 22c by a photolithography process, and via-hole conductors b2 and B2 are formed in the openings O5 and O6 of the insulator layer 22b. To do. Thereby, the coil conductors 24b and 24c are connected via the via-hole conductor b2.
- the photolithography process in FIG. 6A is the same as the photolithography process described in FIGS. 3C to 4C, and thus the description thereof is omitted. Thereafter, by repeating the steps shown in FIGS.
- the insulator layers 22d and 22e, the coil conductors 24d to 24e, and the via-hole conductors b3, b4, B3, and B4 are formed.
- the coil conductors 24c and 24e have the shape shown in FIG. 6A and have the number of turns of one turn.
- the coil conductors 24b and 24d have the shape shown in FIG. 5B and have the number of turns of one turn. That is, in the coil L, two types of coil conductors 24 are alternately arranged in the z-axis direction.
- an insulator layer 22f provided with openings O7 and O8 is formed on the insulator layer 22e and the coil conductor 24e by a photolithography process. Since the process shown in FIG. 6B is the same as the process shown in FIG. 5A, further detailed description is omitted.
- a coil conductor 24f and conductor layers 17a and 17b are formed on the insulator layer 22f by a photolithography process, and via holes are formed in the openings O7 and O8 of the insulator layer 22f.
- Conductors b5 and B5 are formed. More specifically, the conductor layer 17a extending in the y-axis direction along the cut line L1 is formed, and the conductor layer 17b extending in the y-axis direction along the cut line L2 is formed.
- the conductor layer 17a is also formed on the negative side of the conductor layer 17a in the x-axis direction.
- the conductor layer 17b is also formed on the positive side of the conductor layer 17b in the x-axis direction.
- the two conductor layers 17a and 17b arranged side by side have a width W1 in the x-axis direction when viewed in plan from the z-axis direction.
- the coil conductor 24f is connected to the conductor layer 17a.
- the via-hole conductor B5 is connected to the conductor layer 17b.
- the conductor layer 17b is connected to the coil conductor 24a via the via-hole conductors B1 to B5 (the via-hole conductors B3 and B4 are not shown). Therefore, the coil L is connected between the conductor layers 17a and 17b.
- the insulator layers 20 and 22a to 22f, the coil conductors 24a to 24e, and the conductor layers are laminated by laminating the insulator layers and the conductor layers in the steps shown in FIGS. Via-hole conductors b1 to b4 and B1 to B4 are formed.
- an insulator layer 22g having openings O9 and O10 is formed on the insulator layer 22g, the coil conductor 24f, and the conductor layers 17a and 17b by a photolithography process.
- the opening O9 is a groove extending in the y-axis direction so as to overlap the cut line L1 and the conductor layer 17a when viewed in plan from the z-axis direction.
- the opening O9 has a width W2 that is narrower than the width W1 of the two conductor layers 17a.
- the opening O10 is a groove extending in the y-axis direction so as to overlap the cut line L2 and the conductor layer 17b when viewed in plan from the z-axis direction.
- the opening O10 has a width W2 that is narrower than the width W1 of the two conductor layers 17b.
- the openings O9 and O10 overlap so as not to protrude from the conductor layers 17a and 17b, respectively.
- an insulator layer 22h provided with openings O11 and O12 is formed on the insulator layer 22g by a photolithography process.
- the opening O11 is a groove extending in the y-axis direction so as to overlap the cut line L1 and the opening O9 when viewed in plan from the z-axis direction.
- the opening O11 has a width W3 wider than the width W1 of the conductor layer 17a and the width W2 of the opening O9.
- the opening O12 is a groove extending in the y-axis direction so as to overlap the cut line L2 and the opening O10 when viewed in plan from the z-axis direction.
- the opening O12 has a width W3 wider than the width W1 of the conductor layer 17b and the width W2 of the opening O10.
- the conductor layers 17a and 17b and the openings O9 and O10 overlap so as not to protrude from the openings O11 and O12, respectively.
- the conductor layers 15a, 15b, 16a, and 16b to be the external electrodes 14a and 14b are formed so as to be electrically connected to the coil conductor 24.
- the openings O9 to O12 are filled with a conductive material by a photolithography process.
- conductor layers 16a and 16b are formed in the openings O9 and O10, respectively, and conductor layers 15a and 15b are formed in the openings O11 and O12, respectively.
- the regions adjacent to the openings O9 and O10 on the insulator layer 22g are the openings O11 and O12 when viewed in plan from the z-axis direction in FIG. 7B.
- the region does not overlap the openings O9 and O10.
- the mother laminated body 112 is cut along the openings O9 and O10 to obtain a plurality of unfired laminated bodies 12. Specifically, the mother laminate 112 is cut along the cut lines L1 to L4. Thereby, the unfired laminated body 12 shown in FIG. 8 is obtained.
- the plurality of unfired laminates 12 are fired at a temperature of 800 ° C. or higher.
- the insulator layers 20, 22a to 22h, the coil conductors 24a to 24f, the via-hole conductors b1 to b5, B1 to B5, and the conductor layers 15a, 15b, 16a, 16b, 17a, and 17b are fired simultaneously.
- the fired laminated body 12 is obtained through the above steps.
- the laminated body 12 is barrel-processed and chamfered.
- the external electrodes 14a and 14b are formed by performing Ni plating / Sn plating on the surfaces of the conductor layers 15a, 15b, 16a and 16b.
- an electronic component 10a as shown in FIG. 1 is completed.
- the external electrode 14 can be prevented from being peeled off from the multilayer body 12 as described below. More specifically, in the conventional method for manufacturing the surface mount electronic component 501 (see FIG. 12), the external electrode 506 is formed on the mother laminate 510 after the mother laminate 510 is fired. Therefore, in the method for manufacturing the surface mount electronic component 501, the external electrode 506 may not sufficiently adhere to the mother laminate 510.
- the laminate 12 and the external electrode 14 are fired simultaneously. Thereby, at the time of baking the laminated body 12 and the external electrode 14, the shrinkage behavior of the laminated body 12 and the shrinkage behavior of the external electrode 14 can be aligned, and unnecessary stress is generated between the laminated body 12 and the external electrode 14. Occurrence can be suppressed. For this reason, in the electronic component 10 a, the external electrode 14 comes into close contact with the multilayer body 12 as compared with the surface-mounted electronic component 501. As a result, according to the method for manufacturing the electronic component 10a, the external electrode 14 is prevented from being peeled from the multilayer body 12.
- the manufacturing method of the electronic component 10a it can suppress that the external electrode 14 peels from the laminated body 12 also for the following reasons. More specifically, in the electronic component 10 a, the conductor layer 17 connected to the external electrode 14 is provided in the multilayer body 12. Therefore, an anchor effect occurs between the conductor layer 17 and the multilayer body 12. As a result, according to the method for manufacturing the electronic component 10a, the external electrode 14 is prevented from being peeled from the multilayer body 12.
- the stray capacitance generated between the external electrode 14 and the coil L can be reduced as described below. More specifically, the external electrode 14 is provided only on a part of the surface of the multilayer body 12 on the positive side in the z-axis direction and a part of the side surface of the multilayer body 12 located at both ends in the x-axis direction. Therefore, in the electronic component 10a, for example, the area where the external electrode 14 and the coil L face each other is smaller than when the external electrode 14 is provided on the entire side surface located at both ends of the laminated body 12 in the x-axis direction. Become. As a result, in the electronic component 10a, stray capacitance generated between the external electrode 14 and the coil L can be reduced.
- FIG. 9 is a perspective view of an electronic component 10b according to a modification.
- the difference between the electronic component 10a and the electronic component 10b is that, in the electronic component 10a, the conductor layers 15a and 15b are embedded in the multilayer body 12, whereas in the electronic component 10b, the conductor layers 15a and 15b are different from the multilayer body 12. It is a point formed on the surface on the positive direction side in the z-axis direction.
- FIG. 10 is a top view and a cross-sectional structure diagram in the manufacturing process of the electronic component 10b. Until the step of forming the insulator layer 22g in the manufacturing process of the electronic component 10b (see FIG. 10A), the step of forming the insulator layer 22g in the manufacturing process of the electronic component 10a (see FIG. 7A). ).
- conductor layers 15a, 15b, 16a, 16b to be the external electrodes 14a, 14b are formed.
- the openings O9 and O10 are filled with a conductive material to form conductor layers 15a and 15b by a photolithography process, and the cut lines L1 and L2 are defined when viewed in plan from the z-axis direction.
- Conductor layers 16a and 16b having a width W3 as the center in the x-axis direction are formed.
- an unfired mother laminated body 112 composed of the insulator layers 20, 22a to 22g is obtained.
- the mother laminated body 112 is cut along the openings O9 and O10 to obtain a plurality of unfired laminated bodies 12. Specifically, the mother laminate 112 is cut along the cut lines L1 to L4 to obtain a plurality of unfired laminates 12. Further, the plurality of unfired laminates 12 are fired at a temperature of 800 ° C. or higher. Thereby, the insulator layers 20, 22a to 22g, the coil conductors 24a to 24f, the via-hole conductors b1 to b5, B1 to B5, and the conductor layers 15a, 15b, 16a, 16b, 17a, and 17b are fired simultaneously. Since the process performed after this is the same as the process performed in the electronic component 10a, description is abbreviate
- FIG. 11 is a perspective view of an electronic component 10c according to another modification.
- the external electrode 14 may further include conductor layers 16 (16′a, 16′b) and 17 (17′a, 17′b).
- the conductor layer 16 ′ is provided on the side surface of the multilayer body 12 on the negative side of the conductor layer 16 in the z-axis direction.
- the conductor layer 17 ′ extends in the y-axis direction at a position away from the conductor layer 17 by a predetermined distance on the negative side in the z-axis direction in the multilayer body 12.
- the conductor layer 16 and the conductor layer 16 ′ are connected, and the conductor layer 16 ′ and the conductor layer 17 ′ are connected. According to such an electronic component 10c, it is possible to more effectively reduce the external electrode 14 from being peeled from the stacked body 12.
- the circuit element incorporated in the laminate 12 is not limited to the coil L. Therefore, the laminated body 12 may contain elements such as capacitors and filters.
- the conductor layer 17 is not necessarily provided.
- exposure may be performed through a photomask.
- the present invention is useful for a method of manufacturing an electronic component, and is particularly excellent in that the external electrode can be prevented from peeling off from the laminate.
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Abstract
Description
以下に、本発明の一実施形態に係る製造方法において作製される電子部品の構成について図面を参照しながら説明する。図1は、本発明の一実施形態に係る電子部品10aの透視図である。本実施形態において、電子部品10aの形成時に、絶縁体層が積層されていく方向を積層方向の上方向と定義する。電子部品10aでは、図1の上側から下側へと絶縁体層が積層されるので、積層方向の上方向は、図1の下方向である。そして、積層方向をz軸方向と定義する。また、電子部品10aの長辺に沿った方向をx軸方向とし、電子部品10aの短辺に沿った方向をy軸方向とする。
以下に、本発明の一実施形態に係る電子部品10aの製造方法について図面を参照しながら説明する。図2ないし図8は、電子部品10aの製造過程における上視図及び断面構造図である。図2ないし図8の断面構造図では、図2ないし図8の上方向がz軸方向の正方向である。図2ないし図8には、複数の電子部品10aの製造工程について示してある。また、図2ないし図8の上視図における点線は、複数の電子部品10aにカットされる際のカット線L1~L4である。カット線L1,L2は、y軸方向に延在しており、カット線L3,L4は、x軸方向に延在している。そして、カット線L1は、カット線L2よりもx軸方向の負方向側に位置し、カット線L3は、カット線L4よりもy軸方向の負方向側に位置している。
以上のような電子部品10aの製造方法によれば、以下に説明するように外部電極14が積層体12から剥離することを抑制できる。より詳細には、従来の表面実装型電子部品501(図12参照)の製造方法では、外部電極506は、マザー積層体510の焼成後に、マザー積層体510に形成される。そのため、表面実装型電子部品501の製造方法では、外部電極506がマザー積層体510に対して十分に密着しないおそれがある。
以下に、変形例に係る電子部品10bの製造方法について図面を参照しながら説明する。図9は、変形例に係る電子部品10bの透視図である。電子部品10aと電子部品10bとの相違点は、電子部品10aでは導体層15a,15bが積層体12に埋め込まれているのに対して、電子部品10bでは導体層15a,15bが積層体12のz軸方向の正方向側の面上に形成されている点である。
L コイル
L1~L4 カット線
O1~O12 開口
10a~10c 電子部品
12 積層体
14a,14b 外部電極
15a,15b,16a,16b,16'a,16'b,17a,17b,17'a,17'b,124a 導体層
20,22a~22h,120 絶縁体層
24a~24f コイル導体
50a,50b レジスト膜
60 方向認識マーク
112 マザー積層体
Claims (6)
- 複数の第1の絶縁体層と複数の第1の導体層とを積層する工程と、
所定の方向に延在する複数の第1の溝が設けられている第2の絶縁体層を、前記第1の絶縁体層上に形成する工程と、
前記第1の溝の内周面、及び、前記第2の絶縁体層上において該第1の溝に隣接する領域に対して、外部電極となる第2の導体層を前記第1の導体層と電気的に接続するように形成する工程と、
前記第1の絶縁体層、前記第2の絶縁体層、前記第1の導体層及び前記第2の導体層を焼成する工程と、
を備えていること、
を特徴とする電子部品の製造方法。 - 前記第1の絶縁体層及び前記第2の絶縁体層からなるマザー積層体を前記第1の溝に沿ってカットして、複数の積層体を得る工程を、
更に備え、
前記第1の絶縁体層、前記第2の絶縁体層、前記第1の導体層及び前記第2の導体層を焼成する工程では、前記複数の積層体を焼成すること、
を特徴とする請求項1に記載の電子部品の製造方法。 - 前記複数の第1の絶縁体層と前記複数の第1の導体層とを積層する工程は、
前記所定の方向に延在する第3の導体層を前記第1の絶縁体層上に形成する工程を、
含み、
前記第2の絶縁体層を形成する工程では、積層方向から平面視したときに、前記第1の溝が、前記第3の導体層と重なり、かつ、該第3の導体層の幅よりも狭い幅を有するように、前記第1の絶縁体層及び該第3の導体層上に該第2の絶縁体層を形成すること、
を特徴とする請求項1又は請求項2のいずれかに記載の電子部品の製造方法。 - 前記第1の溝よりも広い幅を有している第2の溝が積層方向から平面視したときに該第1の溝と重なるように設けられている第3の絶縁体層を、前記第2の絶縁体層上に形成する工程を、
更に備え、
前記第2の導体層を形成する工程では、前記第1の溝及び前記第2の溝に対して、導電材料を充填すること、
を特徴とする請求項1に記載の電子部品の製造方法。 - 前記第1の絶縁体層、前記第2の絶縁体層及び前記第3の絶縁体層からなるマザー積層体を前記第1の溝に沿ってカットして、複数の積層体を得る工程を、
更に備え、
前記第1の絶縁体層、前記第2の絶縁体層、前記第1の導体層、前記第2の導体層を焼成する工程では、前記複数の積層体を焼成すること、
を特徴とする請求項4に記載の電子部品の製造方法。 - 前記第1の溝が設けられている前記第2の絶縁体層は、フォトリソグラフィ工程により形成されること、
を特徴とする請求項1ないし請求項5のいずれかに記載の電子部品の製造方法。
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JP6558302B2 (ja) * | 2016-05-26 | 2019-08-14 | 株式会社村田製作所 | 電子部品 |
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JP2002305116A (ja) * | 2001-01-31 | 2002-10-18 | Matsushita Electric Ind Co Ltd | チップ型電子部品及びその製造方法 |
JP2002367833A (ja) * | 2001-06-13 | 2002-12-20 | Fdk Corp | 積層チップインダクタ |
JP2004179585A (ja) * | 2002-11-29 | 2004-06-24 | Murata Mfg Co Ltd | 積層チップ部品の製造方法 |
JP2009076719A (ja) * | 2007-09-21 | 2009-04-09 | Panasonic Corp | チップ型lc複合素子 |
JP2009260106A (ja) * | 2008-04-18 | 2009-11-05 | Panasonic Corp | 電子部品 |
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US6798064B1 (en) * | 2000-07-12 | 2004-09-28 | Motorola, Inc. | Electronic component and method of manufacture |
JP2005250448A (ja) * | 2004-02-05 | 2005-09-15 | Sharp Corp | 電子素子、表示素子及びその製造方法 |
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JP2002305116A (ja) * | 2001-01-31 | 2002-10-18 | Matsushita Electric Ind Co Ltd | チップ型電子部品及びその製造方法 |
JP2002367833A (ja) * | 2001-06-13 | 2002-12-20 | Fdk Corp | 積層チップインダクタ |
JP2004179585A (ja) * | 2002-11-29 | 2004-06-24 | Murata Mfg Co Ltd | 積層チップ部品の製造方法 |
JP2009076719A (ja) * | 2007-09-21 | 2009-04-09 | Panasonic Corp | チップ型lc複合素子 |
JP2009260106A (ja) * | 2008-04-18 | 2009-11-05 | Panasonic Corp | 電子部品 |
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JP2019192829A (ja) * | 2018-04-26 | 2019-10-31 | Tdk株式会社 | 積層コイル部品 |
JP2022186941A (ja) * | 2018-04-26 | 2022-12-15 | Tdk株式会社 | 積層コイル部品 |
JP7200499B2 (ja) | 2018-04-26 | 2023-01-10 | Tdk株式会社 | 積層コイル部品 |
JP7608409B2 (ja) | 2018-04-26 | 2025-01-06 | Tdk株式会社 | 積層コイル部品 |
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JP5585576B2 (ja) | 2014-09-10 |
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