Chip part manufacturing method and chip parts

Abstract

The present invention provides a chip part manufacturing method comprising a separating process capable of suppressing deformation of chip parts, and also provides chip parts. It comprises a step of forming a plurality of frame-like void portions (32) in one main surface of substrate (30) and insulating resin layer (20) having a spiral void portion (40) disposed in the region thereof, a step of forming metal layer (36) in frame-like void portion (32) and spiral void portion (40) and on insulating resin layer (20), a step of polishing metal layer (36) at least up to the upper surface of insulating resin layer and forming coil section (18) in spiral void portion (40), and a step of forming a metal layer for connecting chip parts to frame-like void portion (32), wherein the metal layer is melted and removed by using an etching agent to separate a plurality of chip parts connected to each other by a frame-like connection.

Description

TECHNICAL FIELD [0001] The present invention relates to a method of manufacturing chip parts used in various electronic apparatuses, and chip parts. BACKGROUND ART [0002]FIG. 6A to FIG. 6D are process diagrams showing a conventional chip part manufacturing process. FIG. 7 is an exploded perspective view of portion S of the chip part in FIG. 6B. [0003]FIG. 6A is a sheet forming diagram, FIG. 6B is a coil section forming diagram, FIG. 6C is an element separating diagram, and FIG. 6D is an electrode forming diagram, which respectively show the manufacturing processes. [0004] As shown in FIG. 6A, in the sheet forming process, a plurality of green sheets 1 are formed. Subsequently, as shown in FIG. 6B and in FIG. 7 mentioned later, in the coil forming process, arcuate conductors 2 are printed on the plurality of green sheets 1 by using Ag paste. Next, green sheets 1 are laminated to form coil section 3 formed from spiral conductor. In this case, arcuate conductors 2 printed on respective...

AI Technical Summary

Benefits of technology

[0011] The present invention provides a chip part manufacturing method including a separating process, which may solve the above problem and suppress deformation of chip parts, and a chip part.

[0012] Also, it provides chip parts capable of suppressing break or crack, for example, in feeding of chip parts.

[0014] In the above configuration, a plurality of chip parts are previously connected to each other by the connection formed from metal layer. The connection is melted and removed by using an etching agent to separate the plurality of chip parts connected to each other by the connection, and therefore, a problem of cutting stresses generated in chip parts can be prevented. As a result, it is possible to provide a chip parts manufacturing method capable of suppressing deformation of chip parts.

[0016] In the above configuration, since the connection is melted and removed by using an etching or release agent for the purpose of separation, the problem of cutting stresses generated in chip parts can be prevented. As a result, it is possible to suppress the deformation of chip parts.

[0021] In the above configuration, the first corner formed by surfaces vertical to the mounting surface which adjoin each other can be formed generally arcuate. In this way, when feeding a plurality of chip parts into the apparatus by using a parts feeder or the like, the parts can be smoothly fed even in case the chip parts come into contact with each other, and it is possible to suppress the break or crack in chip parts. Particularly, since the second corner formed by surfaces vertical and parallel to the mounting surface which adjoin each other is generally squared, it is possible to suppress chip rising (Manhattan phenomenon) in mounting, that is, rising of chip parts from the mounting surface at one side, and due to the generally squared shape, the parts can be prevented from rising (getting up) or rotating.

[0022] In the above configuration, the first corner formed by surfaces vertical to the mounting surface which adjoin each other is generally arcuate, and therefore, when feeding a plurality of chip parts into the apparatus by using a parts feeder or the like, the parts can be smoothly fed even in case the chip parts come into contact with each other, and it is possible to suppress break or crack in chip parts. Particularly, since the second corner formed by surfaces vertical and parallel to the mounting surface which adjoin each other is generally squared, it is possible to suppress chip rising at the time of mounting.

Problems solved by technology

Also, when a plurality of chip parts 7 are fed into the apparatus by means of a parts feeder or the like, causing the chip parts to come into contact with each other, the parts are not smoothly fed because the first corner of chip part 7 is squared, and there arises a problem of break or crack in chip parts.

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