JPH01151210A - Structure of laminate-applied component - Google Patents

Abstract

PURPOSE:To obtain a high inductance even with a small size by a method wherein two or more half coils connected mutually are formed on an identical laminate face, two or more combinations in a vertical direction and magnetic- core corresponding parts surrounded by the coils are formed so that magnetic flux can be exerted at the individual magnetric-core corresponding parts. CONSTITUTION:A conductor 1 for coil formation use is provided in such a way that two U-shaped half coils a and b whose ends are connected to each other are formed on an identical laminate face so as to form one set and that half-coil sets composed of two or more half coils formed one after another in the same manner are formed while end parts of the adjacent half coils are connected and opening sides of the adjacent half coils are faced to be mutually opposite. The adjacent half coil sets in a vertical direction at the laminate face via a magnetic substance layer 4 are constituted in such a way that the opening sides of the individually corresponding half coils are faced to be mutually opposite; one-end sides of the adjacent half-coil sets in the vertical direction on the laminate are connected mutually; magnetic flux generated at a part surrounded by the adjacent half coils on the laminate face are exerted mutually. By this setup, a high inductance can be obtained even with a small size.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention is directed to a multilayer application component mainly consisting of an 81-layer inductor manufactured by alternately laminating and sintering a coil-forming conductor and a magnetic material. Regarding structure.

(Prior art) A-layer applied parts such as laminated inductors and laminated transformers are made by using, for example, ferrite powder with high electrical insulation properties made into a paste using a binder, and conductor powder for coil formation made into a paste using a binder. The layers are alternately laminated using a printing method so that one (or a plurality of independent half coils) are formed on one laminated surface, and the conductor pattern for the coil is sequentially connected from one magnetic layer to the next. Create a laminate shaped like a coil,
It is manufactured by firing this.

(Problems to be Solved by the Invention) Conventional laminated applied parts having an inductance component such as laminated inductors manufactured as described above have one half coil or a plurality of independent coils on one laminated surface. is formed, and there is a problem that there is a limit to obtaining a high inductance.

(Means for Solving the Problems) In order to solve the above problems and provide a multilayer application component that is small and has a high inductance value, the multilayer application component of the present invention has a plurality of eight - A half-coil set consisting of two half-coils is provided such that the ends of the adjacent half-coils are connected and the opening sides of the adjacent half-coils are oriented in opposite directions, and the magnetic material is layered in a direction perpendicular to the 81-layer surface. Adjacent half-coil sets through each corresponding eight-
The opening sides of the half-coils are configured to face oppositely to each other, and one end side of the half-coil pairs adjacent to each other in the vertical direction to the laminated surface are connected to each other, and the half-coils are connected to the portion surrounded by the adjacent half-coils on the laminated surface. It is characterized by a configuration in which the generated magnetic fluxes are added to each other.

(Example) FIG. 1 is a diagram schematically showing an example of a laminated applied component according to the present invention. This example shows an inductor configured as a laminated inductor, and the coil forming conductor l is
Two U-shaped half coils a and b, whose ends are connected to each other, are formed on the same laminated surface to form a set, and then a set consisting of half coils C and d is formed on top of the set through a magnetic layer. Similarly, a half coil set consisting of e and f, g,
half-coil sets consisting of h are sequentially formed, and one end of each half-coil set is connected to an end of an adjacent half-coil set in the direction perpendicular to the laminated surface. Further, the end of the half coil a at the winding start side and the end of the half coil j at the end are connected to extraction electrodes 2 and 3, respectively.

4 is a part corresponding to the magnetic core formed by laminating magnetic materials with high electrical insulation properties, and is the 8-fiber coil a on the left side of the drawing.
, d, e, h, and i, and the eight-fucoils b and c on the right side of the drawing.

In the part B surrounded by f, g, and j, for example, when the conductor l is energized from the extraction electrode 3 side as shown in the figure, the magnetic flux flows in the opposite direction, and these magnetic fluxes flow into the upper and lower magnetic paths C in the drawing. ,D
By passing through this, a closed rectangular magnetic circuit is formed.

Fig. 2 is a manufacturing process diagram of the laminated applied parts shown in Fig. 1. First, as shown in Fig. 2 (1), the substrate (not shown) is
An insulating paste made of ferrite powder having high electrical insulation properties and a binder is applied thereon by printing to form a base 4a which is a magnetic layer.

next! As shown in FIG. 82 (2), the extraction electrode 2
The mutually connected half coils a and b are formed by printing a conductive paste so that both ends thereof are connected to each other and the openings U and v are oriented in opposite directions. The conductive paste forming the eight-fold coils a and b is made by mixing metal powder such as Ag, Ag-Pd, Cu, Ni, or Pd with a binder.

Next, as shown in FIG. 2(3), on the base 4a,
A magnetic layer 4b is formed by printing the insulating paste so as to cover the extraction electrode 2, the half coil a, and the a-side half of the half coil b.

Next, as shown in FIG. 2(4), the half coils C and d are placed on the exposed portion of the base 4a and the magnetic layer 4b, so that one end of the half coil C is the exposed end of the half coil b. so that the openings W and X of each half coil c and d overlap with the opening v of half coils b and a, respectively.
, U by printing.

Next, as shown in FIG. 2(5), a magnetic layer 4c is formed using the insulating paste so as to cover the base 4a, the half coil C, and the C side half of the half coil d.

Next, as shown in FIG. 2(6), the half coils e and f are placed on the magnetic layers 4b and 4c so that one end of the eight-fold coil e overlaps the exposed end of the half coil d.
In addition, the openings Y and Z of the half-coils e and f are formed by printing so that they are in the opposite direction to the openings x and W of the eight-half coils d and c, respectively.

Similarly, after forming the magnetic layer 4d (7), forming the half coils g and h (8), and forming the magnetic layer 4e (9), the half coils i and j and the extraction electrode 3 are formed. (10) is carried out, and finally, the entire base 4f''r made of a magnetic layer is covered with the insulating paste to obtain an intermediate laminate.

Next, this intermediate laminate is fired in, for example, an inert gas, and external terminals (not shown) connected to the extraction electrodes 2 and 3 are formed by baking a conductive paste to obtain a laminated inductor.

The laminated inductor manufactured in this way.

Parts of the bases 4a and 4f form the C portions of the magnetic core 4 shown in FIG. 1, respectively, and form half coils a and d.

The part surrounded by e, h, and i constitutes part A in FIG. 1, and the part surrounded by half coil b + c e f + g I J constitutes part B.

With such a configuration, since inductance is proportional to the square of the number of turns N of the coil, a much larger inductance value than the conventional one can be obtained when the number of laminated half coils is the same.

FIG. 3 is a diagram schematically showing another embodiment of the laminated applied component according to the present invention, and in this embodiment, three half coils are formed in one layer.

That is, half coils (a, b, c), (d.

e, f), (g, h, i), (j, to, l>, (m, n
, p) are formed in sequence through a magnetic layer, and lead electrodes 2 and 3 are connected to the half coil a at the starting end and the half coil p at the end, respectively.

In this embodiment, as in the previous embodiment, as shown in FIG. 4, first a base 4a is formed using the insulating paste (1), and then half coils a and b are formed.

The half coil set consisting of C and the extraction electrode 2 are connected to the openings U and V of half coils a, b, and c.

W is formed with the conductive paste (2) so that the adjacent ones are opposite to each other, then the magnetic layer 4b is formed with the insulating paste (3), and then the half coil is formed with the insulating paste. c, b.

Half coils d, e, and f are formed (4) so that openings x, y, and z are formed in opposite directions to a.

After that, similarly, the formation of the magnetic layer 4C (5), the formation of the half coil g e h + * (6), and the formation of the magnetic layer 4d
formation (7), formation of 8-fucoil jt k, 1 (8)
, Formation of magnetic layer 4e (9), Eight-fold coil m, n, p
Then, the extraction electrode 3 is formed (lO) and the base 4f made of a magnetic layer is formed (11) to obtain an intermediate laminate, which is then fired and external terminals are formed in the same manner as described above.

According to the embodiment shown in FIGS. 3 and 4.

Since the number of half coils formed on one laminated surface is three times that of the conventional example, an even larger inductance value can be obtained than in the embodiments shown in FIGS. 1 and 2.

FIG. 5 is a diagram showing an application example of the present invention, in which column (A) is a perspective view, column (B) is a perspective view, and column (C) is a circuit diagram.

Column (D) is a characteristic diagram, each drawing corresponding to the horizontal direction.

The chip inductor shown in FIG. 5(1) has a main body 6. That is, it has a coiled conductor l formed as described above inside the magnetic body 4, and a pair of external terminals 5 provided on the outer surface.

The chip transformer shown in FIG. 5(2) has a main body 7 formed by providing the chip inductor shown in FIG. 5(1) with an intermediate lead-out electrode 8, and an external terminal 5A connected to the middle lead-out electrode 8. It is.

The chip trap shown in FIG. 5(3) has a capacitor 9 made of a dielectric material and a sheet-shaped electrode, and an inductor body 6 that are integrally overlapped, and a pair of external terminals 5 that connect them in parallel and connect them to the outside. As shown in the characteristic diagram (D), the attenuation amount is maximum at the resonance frequency f.

The chip IFT shown in FIG. 5(4) has a configuration in which the transformer shown in FIG. 5(3) is provided with an intermediate lead-out electrode 8 and an external terminal 5A connected thereto. This is the result.

The chip filter in FIG. 5 (5) includes a multilayer inductor 6A in which a plurality of coils l as shown in FIGS. 1 and 2 are formed in a magnetic body, and a multilayer capacitor 9A in which a plurality of capacitors are formed. By stacking them together and connecting the external terminal 5 to other circuits.

It is composed of a low-pass filter, a bypass filter, a band-pass filter, a delay line, and a band-reject filter.

The above explanation was about an example in which an insulator paste and a conductor paste containing magnetic material powder were printed and formed one on top of the other. By doing so, the present invention can also be applied to the production of a laminate.

(Effect of the invention) As described above, the laminated applied parts of the present invention.

A plurality of mutually connected half-coils are formed on the same laminated surface, and by combining these multiple half-coils in a direction perpendicular to the laminated surface, a plurality of parts corresponding to the magnetic core surrounded by the coils are formed. Since the magnetic flux is added to each core-corresponding portion, it is possible to obtain a laminated applied component that is smaller and has a higher inductance value than the conventional one.

[Brief explanation of the drawing]

Fig. 1 is a diagram schematically showing one embodiment of the laminated applied part according to the present invention, Fig. 2 is a diagram showing its manufacturing process, and Fig. 3 is a diagram schematically showing another embodiment of the laminated applied part according to the present invention. 4 is a diagram showing the manufacturing process, and FIG. 5 is a diagram showing an application example of the present invention. In the figure, (A) is a perspective view', (
B) is a perspective diagram, (C) is a circuit diagram, and (D) is a characteristic diagram.

Claims (1)

[Claims] A half-coil set consisting of a plurality of half-coils is provided on the same lamination surface so that the ends of the adjacent half-coils are connected to each other, and the opening sides of the adjacent half-coils are oriented in opposite directions. Half-coil sets that are adjacent to each other in a direction perpendicular to the plane with magnetic layers in between are configured such that the opening sides of the corresponding half-coils face oppositely to each other, and half-coil sets that are adjacent to each other in a direction perpendicular to the laminated plane are A structure of a laminated applied part characterized in that one end side of the two is connected to each other, and the magnetic flux generated in the area surrounded by the adjacent half coils on the laminated surface is added to the structure.