JPS6031242Y2 - LC composite parts - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to the structure of composite parts.

The present inventor previously provided a chip-type composite component.

Similarly, composite parts include a magnetic layer formed from a paste of magnetic powder such as ferrite, and Pd or Pd-A on the surface of the magnetic material.
A conductive pattern for a coil formed by printing from a paste of conductive powder such as G, a dielectric layer formed from a paste of dielectric powder, and a conductive pattern formed by printing from a similar conductive powder paste on the surface of the dielectric. It is made by laminating capacitor electrodes in an appropriate order, and a series LC or T-shaped
It was intended to provide type LC composite parts.

According to the above technology, the coil part can be formed by printing and lamination technology without using conventional winding, so the capacitor part and the coil part can be manufactured in a consistent process, and the finished product becomes an integrated chip component. Advantages were obtained.

The purpose of the present invention is to provide composite parts in parallel using the above technology.

In the present invention, the composite part is made by laminating the L part and the C part in a subsequent process and firing them, or by making them separately halfway and then stacking them, firing them, and finally by combining the pair of parts in the ratio. It is completed by fixing the external terminal to the fired laminate as a common conductive coating.

The completed positive composite component is an all-in-one solid electronic component and is mechanically strong, and there are no lead wires for external terminals, so the component can be soldered directly to the perint wiring circuit.

Furthermore, the manufacturing process has the advantage that it can be manufactured using the same type of process, such as printing alone or a combination of printing and sheet lamination, as described above.

Since the hydraulic composite component constitutes a side-by-side LC circuit, it can be used for various purposes, such as being incorporated into a television circuit or other electronic equipment as a trap circuit.

Note that since the magnetic material can also be used as a dielectric material if it is appropriately selected from oxide ferrites, it is possible to simplify the manufacturing process and modify and change the characteristics.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

First, the dielectric for C is Tio2. It is composed of powder such as BaTiO3 made into a paste with a binder such as butyral resin, and then stretched into a sheet or printed into a thin layer.

Depending on the case, it may be made of dielectric (for example, dielectric constant 10-20) magnetic material powder made into a paste with a binder such as butyral resin, and then stretched into a sheet or printed into a thin layer.

The magnetic material for L should not be made by making a paste of ferrite powder (releasable material) with a binder and rolling it out into a sheet or printing it into a thin layer.

The electrode for C and the spiral conductor for L are printed with a paste of metal powder such as Pd, Ag-Pd, etc. with a binder and used as an electrode or a spiral pattern.

In FIG. 1, a dielectric layer 1 is first printed or placed on a suitable plywood (not shown), an electrode 2 is printed on it,
The other side 3 is exposed on the left side of the dielectric layer 1.

Next, as shown in FIG. 2, a dielectric layer 4 is laminated or printed on the entire surface, and in the step of FIG. is exposed on the right side of the laminate.

Next, moving to FIG. 4, a dielectric layer 7 is laminated or printed on the entire surface to complete the lamination of the capacitor section.

FIG. 5 and subsequent figures show the lamination process of the coil part. In FIG. 5, a linear conductor 8 is printed on the dielectric layer 7 so as to be shifted toward the upper side, and its left end 9 is exposed on the left side of the laminate.

As shown in FIG. 6, a magnetic layer 10 is laminated or printed except for one end of the conductor 8, and as shown in FIG. 7, a substantially L-shaped conductor 11 extending from the end of the conductor 8 is printed, and as shown in FIG. laminate or print a magnetic layer 12 with one end of the conductor 11 left on the
Further, in the process shown in FIG. 9, a substantially L-shaped conductor 13 connected to the conductor 11 is printed, and its end 14 is exposed on the right side of the laminate.

In the process shown in FIG. 10, a magnetic layer 15 is printed on the upper surface of the laminate to complete the lamination.

The thus obtained laminate is placed in a firing furnace and fired at a predetermined high temperature for a predetermined time to obtain a sintered body that is integrated as a whole.

Since the terminal ends 3.9, 6, and 14 of the electrode and coil conductor are exposed on the left and right sides of the sintered body, respectively, conductive paste (powder paste of Ag, Cu, Ni, etc.) is applied there. The external terminals 15 and 17 are made by baking at a low temperature.

FIG. 12 is a perspective view of the completed LC composite component, in which a coil portion is formed above the capacitor portion C1 on the lower side, and a parallel circuit as shown in FIG. 13 is formed using common external terminals 16 and 17.

As shown in Figures 1 to 10, the composite parts of this invention can be formed using only printing technology and sheet lamination technology, making it possible to simplify and integrate the process, and the resulting products are chip-shaped and well-organized. It has many advantages such as being small.

Furthermore, since the external terminals are not lead-shaped, there are also advantages in terms of assembly, such as the ability to solder them directly to the printed circuit.

[Brief explanation of drawings]

Figures 1 to 11 are plan views showing each sequential process of the manufacturing method of the laminated LC composite part of the present invention, Figure 12 is a perspective view of the completed laminated LC composite part of the present invention, and Figure 13 is equivalent. FIG. The main parts in the figure are as follows. 1, 4.7...dielectric layer, 2,5...
Electrode, 10, 12. 15...Magnetic layer, 8
, 11, 13... Coil conductor, 16, 17...
...External terminal.

Claims (2)

[Scope of utility model registration request] (1) A coil portion consisting of an alternately laminated body of magnetic layers and conductive patterns for forming a coil is provided in which the conductive patterns extend from one layer to another of the magnetic layers via the edges of the magnetic layers and in a perpendicular direction. It is structured to extend in the form of overlapping cylindrical spirals,
A capacitor section consisting of an alternately laminated body of dielectric layers and electrodes is overlapped with the coil section, and the lead-out ends of the conductive pattern and the lead-out ends of the electrodes are connected to the outside of the outer periphery of the superimposed body so as to form a voltage parallel circuit. A pressure composite circuit connected to a terminal. (2) The magnetic layer and the dielectric layer are made of the same material having magnetism and dielectricity.