JPS6328024A - Lc composite parts - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an LC composite component using a film capacitor, among circuit components used in electronic equipment, electrical equipment, etc.

2. Description of the Related Art In the past, capacitors and inductors have often been used in combination for various purposes. At that time, a capacitor and an inductor were configured and used on the circuit.

Problems to be Solved by the Invention However, when configuring the above conventional capacitors and inductors on a circuit, two completed elements are mounted on a printed circuit board, which has disadvantages in terms of manufacturing cost, rationalization of the manufacturing process, and miniaturization. It had

The present invention solves the above-mentioned conventional drawbacks and aims to provide an LC composite component that integrates a film capacitor and an inductor.

Means for Solving the Problems To achieve this objective, the LC composite component of the present invention comprises:
At least one main surface of the insulating film is provided with a metal thin film having a continuous pattern of rectangular waves or first chord/lower chord arcs in the center of at least one main surface, and further strip-shaped metal thin films on both sides of the continuous pattern. An inductor is stacked on a film capacitor, and an inductor is formed by providing an insulating layer on at least the surface having a metal thin film, and then folding at least one sheet of this insulating film alternately in opposite directions at continuous vague-like inversion parts. It has a structure.

Function: This configuration makes it possible to manufacture LC composite parts, thereby making it possible to reduce manufacturing costs, rationalize the manufacturing process, and downsize.

EXAMPLES Hereinafter, examples of the present invention will be described with reference to the drawings.

FIG. 1 shows an external view of an LC composite component in a first embodiment of the present invention. In FIG. 1, 11 is an LC composite element, 12 is an electrode extraction layer, and 13 is a lead wire. FIG. 2 schematically shows the main structure of the LC composite component shown in FIG. 1. In FIG. 2, 21 is a film laminated capacitor section, 22 is an inductor section, and 23 is a protective film layer. Furthermore, 24 is a capacitor evaporated electrostatic absorption,
25 is a dielectric film, 26 is a dielectric layer, 27&.

27b is a metal thin film, and the metal thin film 27& has a continuous pattern of square waves or upper chord/lower chord arcs;
are located on both sides of the metal thin film 27 and are belt-shaped and connected at both ends of the metal thin film 27B. 28 is a metal thin film 271L, an insulating film provided with 2γb, and 29 is an insulating layer. Fig. 3 is a diagram showing the state of the metal thin film provided on the insulating film, 33 is the metal thin film removal part, 34 is the inversion part of the metal thin film 27B, and the film is alternately folded in the opposite direction at this inversion part. be fed.

The LC composite component constructed as described above will be explained below using a specific example.

A vapor-deposited electrode made of aluminum on both sides of a polyethylene terephthalate (hereinafter referred to as PET) film having a thickness of 4 μm is provided, and a dielectric layer having a thickness of 1 μm made of polycarbonate (hereinafter referred to as PC) is further formed on both sides. The material is then rolled up in multiple strips in a wide width.
Thereafter, it was cut into strips, and further cut at the points to have a capacitance of 0.1 μF. Then PET with a thickness of 4 μm
Aluminum is vapor-deposited on the entire surface of one side of the film, and cut into strips with the same width as the element width. In Figure 3, the same width as the width of the cut to have a capacitance of 0.1 μF is used as the inverted part. Steamed by laser beam to length between
A part of the film was removed, an insulating layer made of PC with a thickness of 1 μm was placed on it, and then this film was
The inductor is constructed by alternately folding the continuous pattern in opposite directions at the inverted parts so as to have a self-inductance of H. Then, the film laminated capacitor cut with a capacitance of 0.1 μF and the inductor of 1 mH were stacked, zinc was sprayed to form a layer to take out the electrodes, and lead wires were welded. An LC composite component was completed by applying an exterior to the element configured in this way.

This device had characteristics equivalent to a 0.1 pF film multilayer capacitor connected in parallel with a 0.1 mH inductor.

As described above, according to this embodiment, the film multilayer capacitor is provided with an insulating layer on an insulating film having a continuous pattern and strip-shaped metal thin films on both sides, and is folded in opposite directions alternately at the inverted parts of the continuous pattern. By stacking inductors configured in reverse, it is possible to manufacture LC composite parts, and the manufacturing cost and manufacturing process can be rationalized and miniaturized.

Next, a second embodiment of the present invention will be described with reference to the drawings.

FIG. 4 is an external view of an LC composite component showing a second embodiment of the present invention. In the figure, 41 is a film laminated capacitor section, and 42 is an inductor section, which are equivalent to the I and C composite element shown in FIG.

The difference from the configuration shown in FIG. 1 is that an electrode separation section 43 is provided in layers between the film laminated capacitor section 41 and the inductor section 42 so as to protrude outward from one end surface. 44 is an electrode extraction layer, 45', 45'', 4
5 is a lead wire.

The LC composite component configured as described above will be explained below using a specific example.

With the same structure as the above example, an adhesive layer of 1 μm thick made of PE and PC is provided on both sides of the film between the film multilayer capacitor portion and the inductor portion, and is made of PE having a thickness of 4 μm. 2M outward from one end face as shown
Laminate several sheets so that they protrude to form an electrode separation section. Then, an electrode extraction layer and lead wires were provided, and an exterior was applied to complete the LC composite part.

By providing the electrode separation section 43 between the film laminated capacitor section 41 and the inductor section 42 as described above, an LC composite component that can be connected either in series or in parallel can be provided.

In Example 1.2, the film was coated with 4 μm of P in all of the film multilayer capacitor section, inductor section, and electrode separation section.
Dielectric layer using ET film.

A 1 μm PC film was used for both the insulating layer and the adhesive layer, but
This is because it is preferable for manufacturing or use to have uniform thermal and mechanical properties, but this is not necessarily the case.

In Example 1.2, a laser was used to process the metal thin film provided on the insulating film constituting the inductor, but other processing methods such as removal by charging and discharging may also be used.

Furthermore, the inductor may be stacked not only on one side of the film multilayer capacitor, but also on both sides.

In Example 2, the completed LC composite component is an element that can be connected in series and in parallel, but by making the lead wires 45' and 46'' the same, the υLC parallel-parallel connected component Connect the lead wires to the lead wires 45' and 4.
By using only 5, it becomes an LC series connected component.

Furthermore, in the insulating film provided with the metal thin film constituting the inductor shown in FIG. 3, all portions other than the continuous pattern and the strip-shaped metal thin film on both sides thereof may be removed.

Effects of the Invention As described above, the present invention provides a metal thin film having a continuous pattern of rectangular waves or first and second chord arcs in the center of at least one main surface on at least one main surface of a conventional film multilayer capacitor; Strip-shaped metal thin films are provided on both sides so as to be connected at both ends of the continuous pattern, and then at least one insulating film is provided with an insulating layer on the surface having the metal thin film, and at least one sheet is alternately turned in opposite directions at the reversed part of the continuous pattern. By stacking the folded inductors, an excellent LC composite component with reduced manufacturing cost, rationalization of the manufacturing process, and miniaturization can be realized.

[Brief explanation of drawings]

Fig. 1 is an external view of an LC composite part according to the first embodiment of the present invention, Fig. 2 is a sectional view showing the main part configuration of the LC composite part, and Fig. 3 is a metal thin film forming an inductor. FIG. 4 is a plan view of an insulating film and an external view of an LC composite component in a second embodiment of the present invention. 11... LC composite part, 12... Electrode extraction layer, 13... Lead wire, 21...
・Film laminated capacitor section, 22... Inductor section, 23... Protective film layer, 24...
... Capacitor vapor deposition electrode, 25 ... Dielectric film, 26 ... Dielectric layer, 271L. 2.b...Metal thin film, 28...Insulating film, 29...Insulating layer, 33...
Metal thin film removal section, 34... Inversion section, 41...
...Film laminated capacitor section, 42...Inductor section, 43...Electrode separation section, 44...
・・Electrode number projection layer, 46', 45″, 45 ・・
····Lead. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 4

Claims (2)

[Claims] (1) On at least one main surface of the insulating film, a thin metal film with a continuous pattern of rectangular waves or first and second chord arcs in the center, and strip-shaped metal thin films on both sides, connected at both ends of the continuous pattern. an insulating layer is provided on at least the surface having the metal thin film, at least one sheet of this film is alternately folded back in opposite directions at the inverted parts of the continuous pattern to form an inductor, and the inductor is connected to at least one side of the film capacitor. An LC composite part characterized by being constructed by overlapping it on the main surface of. (2) An electrode separation part made of an insulating film is provided between the film capacitor and the inductor so as to electrically separate the two, and is arranged so as to protrude outward from at least one end surface. The LC composite component according to claim 1, characterized by: