Unlock instant, AI-driven research and patent intelligence for your innovation.

Circuit module

A technology of circuit modules and electronic components, applied in the direction of circuits, inductors, electrical components, etc., can solve problems such as flatness (reduced coplanarity)

Active Publication Date: 2017-02-22
MURATA MFG CO LTD
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the thickness of the coil conductor or the number of turns of the coil is increased to improve the performance of the built-in coil electrode, waviness occurs on the surface of the magnetic substrate, and the flatness (coplanarity) decreases.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Circuit module
  • Circuit module
  • Circuit module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] refer to figure 1 , the circuit module 10 of this embodiment includes a resin layer BS0 having a rectangular main surface. The ceramic sheets SH1 to SH7 are sequentially laminated on the resin layer BS0. The size of the main surface of each of the ceramic sheets SH1 to SH7 matches the size of the main surface of the resin layer BS0 , and the ceramic sheets SH1 to SH7 are stacked with their respective four corners aligned with the four corners of the resin layer BS0 . The laminated ceramic sheets SH1 to SH7 constitute a laminated body LB1, and the side surfaces of the laminated body LB1 are parallel to the side surfaces of the resin layer BS0.

[0042] The ceramic sheets SH1 and SH7 each contain a nonmagnetic body, and the ceramic sheets SH2 to SH6 each contain a magnetic body. Therefore, the ceramic sheets SH1 and SH7 each constitute a nonmagnetic layer (or low magnetic permeability layer), while the ceramic sheets SH2 to SH6 each constitute a magnetic layer. In add...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A laminate (LB1) is obtained by laminating the following together in a Z-axis direction: ceramic sheets (SH2 through SH6) on which coil conductors (CP2 through CP6) that constitute a coil (CIL1) are formed and ceramic sheets (SH1 and SH7) that sandwich said ceramic sheets (SH2 through SH6). A capacitor (12) and an IC (14) that are connected to the coil (CIL1) are mounted on the bottom surface (= specific surface) of the laminate (LB1). Pin terminals (PN0, PN0, ...) that are connected to the coil (CIL1), the capacitor (12), or the IC (14) and protrude downwards are also provided on the mounting surface. Convexities (CN1b) due to the thickness of the coil conductors (CP2 through CP6) are formed on the mounting surface. The pin terminals (PN0, PN0, ...) have diameters that are less than or equal to the widths of the convexities (CN1b) and are positioned so as to fit inside the outlines of said convexities (CN1b).

Description

technical field [0001] The present invention relates to a circuit module, and particularly to a circuit module in which electronic components are mounted on a mounting surface of a magnetic body in which a coil is embedded. Background technique [0002] In the case of a surface-mounted electronic component on a magnetic substrate including a magnetic layer, if the wiring connecting the terminal of the mounted electronic component and the external terminal of the magnetic substrate passes through the inside of the magnetic substrate, there will be an increase in parasitic inductance, and A condition in which the characteristics of a circuit block deviate from a specific desired characteristic. Therefore, wiring may be provided at the end of the magnetic substrate. However, if the electrodes are exposed to the outside on the magnetic substrate, phenomena such as deterioration of insulation resistance will occur, making it difficult to secure reliability. [0003] Based on th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H01F17/00H01F27/29
CPCH01F17/00H01F27/29
Inventor 大坪喜人南条纯一洼田宪二
Owner MURATA MFG CO LTD