JPH05190385A - Method for manufacturing conductor film laminated member - Google Patents

Abstract

(57) [Summary] [Structure] Conductor foils 2 are formed on both sides of the insulating sheet 1, and then a resist agent is applied on the conductor foils 2 so that a predetermined conductor pattern 3 is obtained, and then by etching. A conductor in which a predetermined conductor pattern 3 is formed on both surfaces of the insulating sheet 1 by removing portions other than the resist agent, and an insulating material is applied to portions other than the portions to be terminal portions of the conductor pattern 3 obtained next. It is a manufacturing method of a membrane lamination member. [Effect] Since the conductor foils are formed on the front and back surfaces of the insulating sheet and the predetermined conductor patterns are obtained by etching, the predetermined conductor patterns can be formed on the front and back surfaces in the same phase, and a large number of them can be formed at once. The conductor pattern can be obtained, and the production efficiency can be remarkably improved as compared with the conventional case where a predetermined conductor pattern is punched out from the insulating tape one by one.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a conductor film laminated member as a constituent member of an LC noise filter for suppressing electromagnetic waves generated from an electronic circuit.

[0002]

2. Description of the Related Art Recently, a small and inexpensive LC noise filter has been proposed which can surely remove intruding noise without causing ringing.

This noise filter is a foldable type, and as shown in FIG. 5, a rectangular tooth-shaped first conductor foil 102 is attached to one surface side of a first insulating sheet 101, and a second insulating sheet is formed. A rectangular tooth-shaped second conductor foil 104 is attached to one side of the sheet 103, and both insulating sheets 101, 10 are formed.
The LC noise filter (see FIG. 7) 105 is configured by folding and stacking 3 (see FIG. 6) such that the bent portions of the rectangular tooth-shaped portions of the conductor foils 102 and 104 are alternately displaced. One conductor foil 102 functions as a coil having a predetermined number of turns, and the second conductor foil 104 constitutes a capacitance with the first conductor foil 102.

The conductor foil (for example, Cu foil) which is a constituent member of the above LC noise filter has been manufactured by the following method. That is, as shown in FIG. 8, after forming rectangular holes 112 in a conductor foil tape 111 by punching in a zigzag manner with a press, and cutting both side edge portions 111a as shown by a broken line a, As shown in FIG. 9, the conductor foil 113 having a predetermined pattern is obtained.

The conductor foil 11 thus obtained
3 is attached to the surface of an insulating tape to form a laminated tape, and two such laminated tapes are stacked on each other such that the conductor foils 113 are in phase with each other, and then folded to form an LC noise filter. Is manufactured.

[0006]

However, according to the above-described method for manufacturing a conductor foil, rectangular holes are sequentially formed in one conductor foil tape, and both side edges thereof are cut. However, there was a problem that the production efficiency was very poor because it was inevitable to make one conductor foil of a predetermined pattern one by one.

Therefore, an object of the present invention is to provide a method of manufacturing a conductor film laminated member which can solve the above problems.

[0008]

In order to solve the above problems, a method for manufacturing a conductor film laminated member according to the present invention comprises forming conductor films on both surfaces of an insulating sheet, and then forming a predetermined conductor pattern on the conductor film. Then, a chemical treatment is performed to remove portions other than the resist agent to form a predetermined conductor pattern on both surfaces of the insulating sheet, and then the terminal portion of the obtained conductor pattern is formed. This is a method in which an insulating material is applied to a portion other than the portions where

[0009]

According to the above structure, since the conductor films are formed on the front and back surfaces of the insulating sheet and the predetermined conductor pattern is obtained by the chemical treatment, the predetermined conductor patterns are formed on the front and rear surfaces in the same phase. In addition, it is possible to obtain a large number of conductor patterns at one time.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In this example, a method of manufacturing a conductor film laminated sheet (conductor film laminated member) as a constituent member of an LC noise filter as described in the conventional example will be described.

First, a conductor foil (an example of a conductor film, specifically, a copper foil) 2 is provided on the front and back surfaces of an insulating sheet (also referred to as an insulating film, which is made of polyester, for example) 1 of a predetermined size. paste.

Next, a resist film is applied to the surfaces of the conductor foils 2 attached to the front and back surfaces. At this time, the shape of the resist film is applied so that a large number of predetermined conductor patterns 3 and 4 are obtained (specifically, as shown in FIGS. 1 and 2, a plurality of rows and consecutive rows are used. (Formed), and the phases of the conductor patterns 3 and 4 are matched on the front and back surfaces.

FIG. 1 shows the conductor pattern 3 on the front surface, which constitutes the inductor portion and a part of the capacitor portion. 2 shows the conductor pattern 4 on the back surface side, which constitutes a part of the capacitor portion.

Next, the front and back surfaces of this insulating sheet 1 are chemically treated, that is, etched to form a conductor foil 2 other than the resist film.
Is removed, and then the remaining resist film is removed to obtain a large number of repeating conductor patterns 3 and 4 having a predetermined shape, for example, a rectangular shape.

Then, of the conductor patterns 3 and 4 formed on the front and back surfaces, the solder-resistant insulating material 5 is applied to the main body portions 3a and 4a excluding both end portions which are terminal portions, and further on this. Apply the thermal adhesive 6. 3 and 4
The application prohibited area A of the solder resistant insulating material 5 and the application prohibited area B of the thermal adhesive 6 are shown in FIG. Of course, the coating prohibited areas A and B differ depending on the folding method, and the examples shown in FIGS. 3 and 4 are examples.

As a result, a large number of LC noise filter constituent members can be manufactured at one time and with high precision. Further, since the insulating material and the heat-adhesive are applied to the front and back surfaces of the insulating sheet, it can be shaped immediately by a heat press or the like after being folded.

Further, since both conductor patterns are integrally formed on the front and back surfaces of the insulating sheet, it is possible to prevent the displacement of both conductor patterns when folded. In addition, since the conductor pattern is formed in a plurality of rows, it is possible to select L
It is possible to easily obtain a multi-channel LC noise filter in which a plurality of C noise filters are integrally provided in parallel.

In the above embodiments, the method of manufacturing the constituent members of the LC noise filter has been described, but the same manufacturing method can be applied to the constituent members of the capacitor, for example.

By the way, in the above-mentioned embodiment, the description has been made such that the conductor foil is attached to the front and back surfaces of the insulating sheet.
In some cases, a conductor material may be applied to form the conductor film.

Further, in the above embodiment, the solder-resistant insulating material and the heat-adhesive B were separately applied. However, for example, the solder-resistant insulating material mixed with the heat-adhesive may be applied. Good.

[0021]

As described above, according to the method for manufacturing a conductor film laminated member of the present invention, a conductor film is formed on the front and back surfaces of an insulating sheet and a predetermined conductor pattern is obtained by chemical treatment. A predetermined conductor pattern can be formed on the back surface in the same phase, and a large number of conductor patterns can be obtained at one time. As in the conventional case, one predetermined conductor pattern is punched out from the insulating tape by a press. The production efficiency can be greatly improved as compared with the case of performing.

[Brief description of drawings]

FIG. 1 is a plan view of relevant parts for explaining a method of manufacturing a conductor film laminated member according to an embodiment of the present invention.

FIG. 2 is a plan view of a principal part for explaining a method for manufacturing a conductor film laminated member in the example.

FIG. 3 is an enlarged plan view of a conductor pattern in the example.

FIG. 4 is an enlarged plan view of a conductor pattern in the example.

FIG. 5 is an exploded perspective view of a conductor and an insulating sheet that form an LC noise filter in a conventional example.

FIG. 6 is a perspective view showing a manufacturing procedure of an LC noise filter in a conventional example.

FIG. 7 is an external perspective view of an LC noise filter in a conventional example.

FIG. 8 is a plan view of relevant parts for explaining a method of manufacturing a constituent member of an LC noise filter in a conventional example.

FIG. 9 is a plan view of a main part of a constituent member of an LC noise filter in a conventional example.

[Explanation of symbols]

 1 Insulation sheet 2 Conductor foil 3,4 Conductor pattern 5 Solder resistant insulating material 6 Thermal adhesive

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takeshi Ikeda 2-5-6-213 Sanno, Ota-ku, Tokyo

Claims (1)

[Claims] 1. A conductor film is formed on both sides of an insulating sheet, a resist agent is applied on the conductor film so that a predetermined conductor pattern is obtained, and then a portion other than the resist agent is chemically treated. Manufacture of a conductor film laminated member, characterized in that a predetermined conductor pattern is formed on both surfaces of an insulating sheet by removing and an insulating material is applied to a portion other than a portion to be a terminal portion of the obtained conductor pattern. Method.