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Electronic component material containing pest repellent, electronic component using the same, and its manufacturing method
| Details |
Inventors: Haniu, Hirohiko; Tomioka, Toshikazu; Tomita, Katsumi; Kobayashi, Susumu;
Assignee: Matsushita Electric Industrial Co., Ltd. (Osaka, JP)
Primary Examiner: Levy; Neil S.
Assistant Examiner:
Attorney, Agent or Firm: Ratner & Prestia
To present printed wiring boards and other electronic components having excellent cockroach repelling performance even after solder reflow or solder flow. A conductive layer having a mounting land is provided on a insulating layer as a substrate, a solder resist is applied to cover the conductive layer excluding the mounting land, and an electronic component material containing a cockroach repellent is applied on the solder resist. This electronic component material is a paste containing a resin curable by crosslinking, a cockroach repellent, and a filler such as silica or talc, and by crosslinking and curing the resin by chemical reaction, a dried cockroach repelling layer is exposed and formed on the surface of the printed wiring board. |
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DETAILED DESCRIPTION An electronic component material of the invention comprises a resin which can be crosslinked and cured, a pest repellent contained in the resin, and a filler contained in the resin, in which a pest repelling layer is formed by curing the resin by crosslinking chemical reaction.
In this constitution, by forming the pest repelling layer containing the filler, the pest repelling layer does not deteriorate at all even after heat load of high temperature when manufacturing electronic appliances such as printed wiring boards, and the pest repelling layer maintaining an excel lent stress relaxation and superior adhesion is obtained.
Moreover, in the cleaning process by solvent after soldering, the pest repelling layer and the pest repellent are not impaired by the solvent.
Preferably, the curable resin contains epoxy resin and hardener.
Preferably, the curable resin contains epoxy acrylate, reactive diluent and light initiator.
In this constitution, when applied in an electronic component, the adhesion of the pest repelling layer is further enhanced, and when cleaning at high temperature in the soldering process, the pest repelling layer having an excellent pest repelling effect is obtained.
Further, when curing, part of the pest repel lent is moved to the surface of the pest repelling layer, and is dispersed in the entire area, and the repelling effect of cockroaches and other insects is extremely exhibited.
An electronic component of the invention comprises: (a) a printed wiring board having an electric insulating board and a conducive layer disposed on the surface of the electric insulating board, and (b) a pest repelling layer disposed on the surface of the printed wiring board, in which the pest repelling layer contains a crosslinked and cured resin, and a pest repellent dispersed and disposed in the resin.
The pest repelling layer also functions as an electric insulating layer.
In this constitution, the printed wiring board remarkably exhibiting the effects of repelling cockroaches and other insects is obtained
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