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US 10,541,076 B2Granted
Power inductor
AssigneeModa-Innochips Co., Ltd.
InventorsIn Kil Park, Tae Hyung Noh, Gyeong Tae Kim, Seung Hun Cho, Jun Ho Jung, Ki Joung Nam, Jung Gyu Lee
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Abstract
The present invention suggests a power inductor comprising: a body; at least one substrate provided on the inside of the body; at least one coil pattern provided on at least one surface of the substrate; and an insulating layer formed between the coil pattern and the body, wherein at least a part of the substrate is removed and the body is filled in a region where the substrate is removed.
Claims21
A power inductor comprising:
- a body comprising a metal powder;
- at least one base material provided in the body;
- at least one coil pattern disposed on at least one surface of the base material;
- and
- an insulation layer disposed between the coil pattern and the body;
- wherein at least a portion of the base material is removed, and the removed portion is filled with the body,
- wherein the insulation layer is formed in a thickness of 3 μm to 100 μm and with a uniform thickness along a stepped portion of the coil pattern,
- wherein the insulation layer is formed with a uniform thickness on a top surface and a side surface of the coil pattern and, at the same time, formed on a surface including the removed portion and a side surface of the base material with the same thickness as that of the insulation layer formed on the top surface and the side surface of the coil pattern;
- and
- wherein the metal powder has a surface coated with a first insulator formed of metal oxide, and a second insulator formed of parylene, wherein the second insulator is coated in a thickness of approximately 1 um to approximately 10 um.
7 more elements
Dependencies are inferred from the claim text.