JP2001160501A - Laminated body and method for manufacturing electronic component using the same - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To prevent dripping of a metal end portion in a cutting direction in a cutting surface of a laminated body, the cut surface does not become a fractured surface, and burrs are generated. It is an object of the present invention to provide a laminate capable of obtaining a flat cut surface with no resin attached. SOLUTION: A sheet 13 formed by arbitrarily laminating a resin 11 and a metal 12 is cut by a first press punch and a second press punch having a wider cutting width than the first press punch. To form a laminate.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated body obtained by arbitrarily laminating a pressed resin and a metal, and a method of manufacturing an electronic component using the laminated body.

[0002]

2. Description of the Related Art A conventional laminate of this type will be described below.
This will be described with reference to the drawings.

FIG. 7A is a sectional view of a conventional sheet made of resin and metal, and FIG. 7B is provided by cutting and dividing a sheet made of resin and metal by one press punching. It is sectional drawing of the conventional laminated body.

In FIGS. 7A and 7B, reference numeral 1 denotes a resin containing a conductive polymer component. Reference numeral 2 denotes a metal formed by foiling copper or copper nickel or the like laminated between the resin 1 and on the upper and lower surfaces of the resin 1. 3 is resin 1 and metal 2
Are alternately laminated. Reference numeral 4 denotes a laminate formed by grooving or punching the sheet 3 between AA's by one press punching. Reference numeral 5 denotes an end of the metal 2 on the cut surface of the laminate 4. Since the sheet 3 is grooved or perforated by one press punching, the end 5 of the metal 2 at the cut surface is tapered in the direction of the cutting force and sags downward. It has become.

FIG. 8A is a cross-sectional view of a conventional sheet made of resin and metal, and FIG. 8B is a conventional laminated body provided by cutting and dividing a sheet made of resin and metal by dicing. FIG. 8C is a cross-sectional view showing a state where a protective layer and an electrode are provided on a conventional laminate.

In FIGS. 8 (a), 8 (b) and 8 (c), reference numeral 1 denotes a resin containing a conductive polymer component. Reference numeral 2 denotes a metal formed by foiling copper or copper nickel or the like laminated between the resin 1 and on the upper and lower surfaces of the resin 1. Reference numeral 3 denotes a sheet in which resin 1 and metal 2 are alternately laminated. Reference numeral 4 denotes a laminate formed by grooving the sheet 3 between AA's by dicing. Reference numeral 5 denotes an end of the metal 2 on the cut surface of the laminate 4. In this case, the end of the metal 2 has a clean cross-sectional shape, but burrs 6 are generated. Reference numeral 7 denotes a protective layer provided on the upper surface and the lower surface of the laminate 4, and 8 denotes an electrode provided by electroplating so as to be continuous on both side surfaces and a part of the upper and lower surfaces of the laminate 4.

[0007]

However, in the above-mentioned conventional laminated body shown in FIGS.
Since it is configured by grooving or drilling by pressing twice, the end 5 of the metal 2 on the cut surface is pushed down in the same direction as the cutting direction for a certain time until it is completely cut. The end 5
However, there is a problem in that the metal 2 becomes slightly tapered to cause a drooping, and the cut surface does not become flat but may be broken. In particular, when the resin 1 and the metal 2 are alternately stacked, the hardness of the resin 1 and the metal 2 is different, so that the cut surface cannot be cut flat by a single cutting or punching, and burrs 6 occur. In some cases, the resin 1 at the time of cutting slightly adhered to the cut surface of the metal 2. 8 (a), 8 (b) and 8 (c)
In the cutting by dicing shown in (1), generation of burrs 6 is inevitable, and there are also problems such as an increase in the preparation of equipment for removing the burrs 6 and the number of steps.

The present invention has been made to solve the above-mentioned conventional problems, and can prevent dripping of a metal end in a cutting direction in a cutting surface of a laminated body in a cutting direction, and this cutting surface can be broken. It is an object of the present invention to provide a laminate that can obtain a flat cut surface without any burrs and no resin adhesion.

[0009]

In order to achieve the above object, a laminate according to the present invention comprises a sheet formed by arbitrarily laminating a resin and a metal, comprising: a first press punch; a first press punch; It is configured by cutting with a second press punching punch having a wider cutting width than the punch. According to this configuration, it is possible to prevent the edge of the metal on the cut surface of the laminated body from dripping in the cutting direction. At the same time, the cut surface does not become a fractured surface, and a flat cut surface free from generation of burrs and adhesion of resin can be obtained.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the first aspect of the present invention, a sheet formed by arbitrarily laminating a resin and a metal is cut by a first press punching punch and a cutting width by the first press punching punch. It is configured by cutting with a wide second press punch. According to this configuration,
Since punching can be performed in a shorter time than the time required for cutting such as dicing, it is possible to prevent dripping of the end of the metal in the cutting direction, and the first press punching has occurred on the cut surface of the resin. Since the fractured surface is punched out by the second press punching, the cut surface does not become a fractured surface, and has a function of obtaining a flat cut surface without generation of burrs or adhesion of resin.

According to a second aspect of the present invention, a sheet formed by arbitrarily laminating a resin and a metal is cut by a press punch having a step at a front end thereof. Since punching can be performed in a short time compared to the time required for cutting such as dicing, it is possible to prevent dripping of the metal end in the cutting direction, and by cutting with a press punching punch having a step at the tip end. The cut surface of the resin is punched at a step where the fracture surface is wide, so that the cut surface does not become a fracture surface.

According to a third aspect of the present invention, a sheet in which a resin and a metal are arbitrarily laminated so as to have a metal on the upper and lower surfaces is fixed, and the sheet is cut by a first press punching machine. A step of forming a continuous laminate by providing a punched portion by cutting with a second press punch having a wider cutting width than the first press punch;
Forming a protective layer on the upper and lower surfaces of the continuous laminate so as not to cover the vicinity of the punched portion, and forming an electrode inside and near the punched portion of the continuous laminate, And a step of dividing the laminated body into individual pieces.According to this manufacturing method, the cut surface of the laminated body is hardly dripped in the cutting direction of the end of the metal and adhesion of the resin occurs. Can be a flat surface,
In addition, since the width of the metal does not become thin even at the end face of the metal, when an electrode is formed on the cut surface, it has an effect that the bonding strength between the electrode and the metal can be improved.

According to a fourth aspect of the present invention, a sheet in which resin and metal are arbitrarily laminated so as to have metal on the upper and lower surfaces is fixed, and the sheet is cut by a press punch having a step at a leading end. Forming a continuous laminated body by providing a punched portion, forming protective layers on upper and lower surfaces of the continuous laminated body so as not to cover the vicinity of the punched portion, and punching the continuous laminated body. A step of forming an electrode inside and in the vicinity of the portion, and a step of dividing the continuous laminate into individual pieces. According to this manufacturing method, the cut surface of the laminate is cut by one cut. A flat surface can be formed with almost no dripping in the cutting direction of the metal end and adhesion of resin, and the width of the metal does not become thin even at the metal end surface. Electrodes If the formation is expected to have an effect that it is possible bonding strength is improved between the electrode and the metal.

(Embodiment 1) A laminate according to Embodiment 1 of the present invention and a method of manufacturing an electronic component using the same will be described with reference to the drawings.

1 (a) to 1 (d) are process diagrams showing a method for manufacturing a laminate according to Embodiment 1 of the present invention, and FIG. 2 is a longitudinal section showing an operation during cutting in the method for producing the laminate. FIG.

1 (a) to 1 (d) and FIG.
Reference numeral 11 denotes a resin containing a conductive polymer component. Numeral 12 is a metal made of copper or copper nickel or the like arbitrarily laminated between the resin 11 and on the upper and lower surfaces of the resin 11. Reference numeral 13 denotes a sheet formed by arbitrarily laminating the resin 11 and the metal 12 in the vertical direction. 14 is the sheet 13
Is cut and divided by a first press punch between BB ′, and a shearing surface 15 of the intermediate laminate 14 where the metal 12 is cut is an end portion of the metal 12 in the cutting direction. Drool, resin 1 to metal 12
1 has occurred. 16 designates the intermediate conductor layer 14 as C
This is a laminated body formed by cutting with a second press punch between C ′. Reference numeral 17 denotes a protective layer provided on the upper surface and the lower surface of the laminate 16, and reference numeral 18 denotes an electrode provided by electroplating so as to be continuous to both side surfaces and a part of the upper and lower surfaces of the laminate 16.

A method of manufacturing the above-structured laminate according to the first embodiment of the present invention will be described below with reference to FIGS. 1 (a) to 1 (d).

First, as shown in FIG. 1A, copper or copper nickel or the like is formed in a foil shape between sheet-like resins 11 containing a conductive polymer component and on the upper and lower surfaces of the resin 11. The metal 12 is arbitrarily laminated and heated and pressed to form a sheet 13 shown in FIG.

Next, as shown in FIG.
3 is grooved or drilled between BB ′ in FIG.
To form Further, the laminate 16 shown in FIG. 1C is formed by press-punching between CC's with a second press-punch punch having a wider cutting width than the first press-punch punch. Finally, as shown in FIG.
A protective layer 17 and an electrode 18 are formed on the laminate 16.

The operation of this manufacturing method at the time of cutting will be described with reference to FIG. In FIG. 2, reference numeral 19 denotes a die for fixing the sheet 13. Reference numeral 20 denotes a first press punch for punching the sheet 13. Then, when the sheet 13 is cut between BB ′ by the first press punching punch 20, the first press punching punch 20 bites into the sheet 13 fixed between the dies 19, and the first press punching punch 20 The repulsive force against the compressive force on the sheet 13 escapes toward the die 19. At this time, the first press punch 2
Since the shear surface 21 for the bite of 0 is partially generated in the cut surface of the sheet 13, the fracture surface 22 is formed when the repulsive force acts further. Thus, in the first press punching, the cut surface has a shape in which the shear surface 21 and the fracture surface 22 are mixed. Next, the cut surface 22 is formed by press-punching between CC's with a second press-punching punch 23 having a cutting width about 0.1 mm wider than the first press-punching punch 20 used for the first press-punching. Disconnect. In the second press punching, since a hole is formed in the first press punching, the repulsive force at the time of the biting of the press punching escapes toward the hole, and as a result, the second press punching No compressive force is generated on the sheet 13 by the shearing force, so that the cut surface has a substantially flat flat shearing surface 2.
1 is formed. Note that the dimensional difference between the first press punching punch 20 and the second press punching punch 23 may be any width as long as it can punch out the fracture surface 22 formed on the cut surface in the first punching.

A method for manufacturing an electronic component using the thus-constructed and manufactured laminate according to the first embodiment of the present invention will be described below.

FIGS. 3A to 3F are process diagrams showing a method for manufacturing an electronic component using the laminate according to the first embodiment of the present invention.

First, as shown in FIG. 3A, a sheet-like resin 31 containing a conductive polymer component and a foil-like metal 32 made of copper or copper nickel having pattern grooves 32a are formed. A plurality of sheets are prepared and laminated such that the sheet-shaped resin 31 and the foil-shaped metal 32 are alternately arranged and the outermost layer in the vertical direction is the foil-shaped metal 32. This is further pressurized while being heated to form a sheet 33 made of a foil-like metal 32 having a pattern groove 32a on the front and back surfaces.

Next, as shown in FIG.
2 is fixed between the dies 19 shown in FIG. 2 and the first press punch 2 shown in FIG.
0, and then, the portion that has been broken by the cutting is cut into a second press punch 23 having a cut width that is about 0.1 mm wider than the first press punch 20.
Then, a punched portion 34 composed of a groove is provided to form a continuous laminated body 35.

Next, as shown in FIG. 3C, the continuous laminated body 35 is not covered so as to cover the vicinity of the punched portion 34.
A protective layer 36 made of resin is formed on the upper and lower surfaces of the substrate. In this case, the protective layer 36 is formed of at least the continuous laminate 35.
Is formed so as to cover the pattern grooves 32a provided on the front and back surfaces of the foil-shaped metal 32 located on the outermost layer of the metal. Thus, it is possible to prevent the electrode formed in the next step from coming into direct contact with the foil-like metal 32 and causing a short circuit.

Next, as shown in FIG. 3D, the continuous laminated body 35 is electrically connected to the foil-like metal 32 at least inside the punched portion 34 inside and near the punched portion 34. Electrode 37 is formed by Ni and Sn plating as described above.

Next, as shown in FIG. 3E, a dividing groove 38 for dividing the continuous laminated body 35 is formed by a dicing saw, and thereafter, as shown in FIG. An electronic component using the laminated body according to the first embodiment of the present invention is divided into individual pieces by the dividing grooves 38 and manufactured.

(Embodiment 2) Hereinafter, a laminate according to Embodiment 2 of the present invention and a method of manufacturing an electronic component using the same will be described with reference to the drawings.

The laminate according to the second embodiment of the present invention
Since the configuration is the same as that of the laminate according to Embodiment 1 of the present invention described above, the same reference numerals are given and the description of the configuration is omitted.

FIGS. 4 (a) to 4 (d) are process diagrams showing a method for manufacturing a laminate according to the second embodiment of the present invention, and FIG. 5 is a longitudinal section showing an operation at the time of cutting in the method for producing the laminate. FIG.

Next, a method of manufacturing the laminate according to the second embodiment of the present invention will be described with reference to FIGS. 4 (a) to 4 (d).

First, as shown in FIG. 4A, copper or copper nickel or the like is formed between the sheet-like resins 11 containing the conductive polymer component and on the upper and lower surfaces of the resin 11 in a foil form. The metal 12 is arbitrarily laminated, heated and pressed to form a sheet 13 shown in FIG.

Next, as shown in FIG.
3 is fixed to a die (not shown), and the sheet 13 is firstly BB 'shown in FIG. 4B by a press punching punch provided with a step so that the width of the leading end becomes narrower.
While punching to the narrow width shown between them, the gap between CC's is continuously punched by the step of the press punching punch. The fracture surface 40 generated on the cut surface between BB ′ in this manner is referred to as C
The laminate 16 shown in FIG. 4C is formed by press punching between C ′. Finally, as shown in FIG. 4D, a protective layer 17 and an electrode 18 are formed on the laminate 16.

The operation at the time of cutting in this manufacturing method will be described with reference to FIG. In FIG. 5, reference numeral 41 denotes a die for fixing the sheet 13. Reference numeral 42 denotes a press punching punch for punching the sheet 13. The press punching punch 42 is provided with a step so that the width of the front end portion 42a becomes narrow. And seat 13 is BB '
When the sheet is cut by the press punch 42 in between, the tip end 42a of the press punch 42 bites into the sheet 13 fixed between the dies 41, and the repulsive force against the compressive force of the press punch 42 on the sheet 13 is generated by the die. Run away to 41. At this time, since the shear surface 43 against the biting of the press punch 42 has already partially occurred on the cut surface of the sheet 13, the fracture surface 40 is formed when the next repulsive force acts. As described above, in the first punching of the press punch 42, the shape of the cut surface is a shape in which the shear surface 43 and the fracture surface 40 are mixed. After this, press punch 4
The shear surface 43 and the fracture surface 40 are cut by press-punching between CC's at a root portion 42b having a cutting width about 0.1 mm wider than the distal end portion 42a in FIG.
In the punching by the root portion 42b of the press punching punch 42, since the hole is punched by the punching by the tip portion 42a of the first press punching punch 42, the repulsive force when the press punching punch 42 bites is a cut surface of the root portion 42b. 44 and escapes toward the hole of the die 41 in which the tip end portion 42a is sandwiched. As a result, no compressive force is applied to the sheet 13 by the root portion 42b of the press punch 42, so that almost no cut surface is formed. A flat flat shear surface 43 is formed. The tip 4 of the press punch 42
The dimensional difference between 2a and the root portion 42b may be any width as long as it can punch out the fracture surface 40 formed on the cut surface in the first punching of the press punching punch 42.

A method of manufacturing an electronic component using the thus-constructed and manufactured laminate according to the second embodiment of the present invention will be described below.

FIGS. 6A to 6F are process diagrams showing a method for manufacturing an electronic component using the laminate according to the second embodiment of the present invention.

First, as shown in FIG. 6A, a sheet-like resin 51 containing a conductive polymer component and a foil-like metal 52 made of copper or copper nickel having pattern grooves 52a are formed. Are prepared, and the sheet-like resin 51 and the foil-like metal 52 are laminated alternately and the outermost layer in the vertical direction becomes the foil-like metal 52. Further, this is pressurized while being heated, so that the front and back surfaces have pattern grooves 52a.
To form a sheet 53 made of a foil-like metal having

Next, as shown in FIG.
5 is fixed by being sandwiched between the dies 41 shown in FIG. 5, and cut by the tip 42a of the press punch 42 having a step at the tip 42a shown in FIG. 5 between the pattern grooves 52a. The cross-section is continuously cut at the base portion 42b of the press punching punch 42 having a cutting width about 0.1 mm wider than the tip portion 42a, thereby providing a punched portion 54 formed of a groove to form a continuous laminated body. 5
5 is formed.

Next, as shown in FIG. 6C, the continuous laminated body 55 is not covered with the vicinity of the punched portion 54.
A protective layer 56 made of resin is formed on the upper and lower surfaces of the substrate. In this case, at least the continuous layered body 55
Is formed so as to cover the pattern grooves 52a provided on the front and back surfaces of the foil-shaped metal 52 located on the outermost layer of the above. Thereby, it is possible to prevent the electrode formed in the next step from being in direct contact with the foil-like metal 52 to cause a short circuit.

Next, as shown in FIG. 6D, the continuous laminated body 55 is electrically connected to the foil-shaped metal 52 at least inside the punched portion 54 inside and near the punched portion 54. Electrode 57 is formed by Ni and Sn plating as described above.

Next, as shown in FIG. 6E, a dividing groove 58 for dividing the continuous laminated body 55 is formed by a dicing saw, and thereafter, as shown in FIG. An electronic component using the laminated body according to the second embodiment of the present invention is manufactured by being divided into individual pieces by the dividing grooves 58.

In the electronic component using the laminate according to the first embodiment of the present invention, the sheet 33 in which the resin 31 and the metal 32 are arbitrarily laminated so as to have the metal 32 on the upper and lower surfaces is fixed to the die 19. Then, after the sheet 33 is cut by the first press punching punch 20, the sheet 33 is cut by the second press punching punch 23 having a wider cutting width than that of the first press punching punch 20, thereby forming the punched portion 3.
4 to form a continuous laminated body 35, the cut surface of the laminated body 35 is flat with almost no dripping of the end of the metal 32 in the cutting direction and little adhesion of the resin 31. When the electrode 37 is formed on the cut surface, the bonding strength between the electrode 37 and the metal 32 is also lower than that in the conventional case. Unlike point contact, it can be improved by surface contact, and as a result, it is possible to prevent deterioration of current resistance and continuity with time as in the conventional case.

In the electronic component using the laminate according to the second embodiment of the present invention, a sheet 53 in which resin 51 and metal 52 are arbitrarily laminated so as to have metal 52 on the upper and lower surfaces is fixed to die 41. Since the sheet 53 is cut by the press punch 42 having a step at the leading end 42a to form the continuous laminated body 55 by providing the punched portion 54, the cut surface of the laminated body 55 is A flat surface can be obtained with almost no dripping of the end of the metal 52 in the cutting direction or adhesion of the resin 51, and the end surface of the metal 52
When the electrode 57 is formed on the cut surface, the bonding strength between the electrode 57 and the metal 52 can be improved by the surface contact, unlike the conventional point contact. In addition, it is possible to prevent the deterioration of the current resistance characteristic and the continuity characteristic with time as in the conventional case.

[0044]

As described above, in the laminate of the present invention, a sheet formed by arbitrarily laminating a resin and a metal can be formed by a first press punch and a first punch having a wider cutting width than the first press punch. 2 is formed by cutting with a press punching punch. According to this configuration, the punching can be performed in a shorter time than the time required for cutting such as dicing, so that the metal edge is drooped in the cutting direction. Can be prevented, and the fracture surface formed on the cut surface of the resin by the first press punching is punched by the second press punching, so that the cut surface does not become a fracture surface and burrs are generated. And has an excellent effect that a flat cut surface free of resin and resin adhesion can be obtained.

[Brief description of the drawings]

FIGS. 1A to 1D are process diagrams showing a method for manufacturing a laminate according to a first embodiment of the present invention.

FIG. 2 is a longitudinal sectional view showing an operation at the time of cutting in the manufacturing method of the laminate.

FIGS. 3A to 3F are process diagrams showing a method for manufacturing an electronic component using the laminate according to the first embodiment of the present invention.

FIGS. 4A to 4D are process diagrams showing a method for manufacturing a laminate according to a second embodiment of the present invention.

FIG. 5 is a longitudinal sectional view showing an operation at the time of cutting in the manufacturing method of the laminate.

FIGS. 6A to 6F are process diagrams showing a method for manufacturing an electronic component using the laminate according to the second embodiment of the present invention.

FIG. 7A is a cross-sectional view of a conventional sheet made of resin and metal. FIG. 7B is a cross-sectional view of a laminated body provided by cutting and dividing a sheet made of resin and metal by one press punching.

FIG. 8A is a cross-sectional view of a conventional sheet made of resin and metal. FIG. 8B is a cross-sectional view of a conventional laminated body provided by cutting and dividing a sheet made of resin and metal by dicing. Sectional view showing a state where a protective layer and an electrode are provided on a conventional laminate.

[Explanation of symbols]

 11, 31, 51 Resin 12, 32, 52 Metal 13, 33, 53 Sheet 16, 35, 55 Laminated body 17, 36, 56 Protective layer 18, 37, 57 Electrode 20 First press punching punch 23 Second press Punching punch 38,58 Dividing groove 42 Press punching punch 42a Tip 42b Root

Claims (4)

[Claims] 1. A sheet formed by arbitrarily laminating a resin and a metal is cut by a first press punching punch and a second press punching punch having a wider cutting width than the first press punching punch. Laminate. 2. A laminated body formed by cutting a sheet formed by arbitrarily laminating a resin and a metal with a press punch having a step at a leading end. 3. A sheet in which a resin and a metal are arbitrarily laminated so as to have a metal on the upper and lower surfaces is fixed, and the sheet is fixed to the first sheet.
Forming a continuous laminated body by providing a punching portion by cutting with a second press punching punch having a wider cutting width than the first press punching punch after cutting by the press punching punch; Forming a protective layer on the upper and lower surfaces of the continuous laminate so as not to cover the vicinity of, and forming an electrode inside and near a punched portion of the continuous laminate, A method of manufacturing an electronic component, comprising: a step of dividing into individual pieces. 4. A sheet formed by arbitrarily laminating a resin and a metal so as to have a metal on the upper and lower surfaces is fixed, and the sheet is cut by a press punch having a step at a front end to provide a punched portion to continuously form the sheet. Forming a stacked layer, forming protective layers on the upper and lower surfaces of the continuous layered body so as not to cover the vicinity of the punched section, and forming an electrode inside and near the punched section of the continuous layered body. And a step of dividing the continuous laminate into individual pieces.