Electrical resistors – With base extending along resistance element – Resistance element coated on base
Reexamination Certificate
2006-09-27
2010-11-02
Lee, Kyung (Department: 2833)
Electrical resistors
With base extending along resistance element
Resistance element coated on base
C338S313000, C338S327000
Reexamination Certificate
active
07825769
ABSTRACT:
A terminal structure of a chip-like electric component capable of blocking entry of electromigration-causing factors through an insulating resin layer in the vicinity of the peak of a raised portion of an electrical element forming layer is obtained. A metal-glaze-based front electrode103containing silver is provided on a surface of an insulating ceramic substrate101. A resistor layer107electrically connected to the front electrode103is provided on the substrate surface. A glass layer109ais provided to completely cover a surface of the resistor layer107as well as a surface of an end portion of the resistor layer107and also to partially cover the front electrode103. An insulating resin layer109bis provided to cover a surface of the glass layer109aas well as a surface of at least an end portion of the glass layer109aand to partially cover the front electrode103. A conductive layer117made of a resin-based conductive paint is provided to extend over the surface of the front electrode103and an portion of the insulating resin layer109bin the vicinity of the peak of raised end portion of the insulating resin layer109b. The resin-based conductive paint is made by kneading particulate conductive silver powder and scale-like conductive silver powder into an epoxy-based insulating resin paint.
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Nomura Yutaka
Takeuchi Katsumi
Hokuriku Electric Co., Ltd.
Lee Kyung
Rankin , Hill & Clark LLP
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