Tdk Corporation

Munehiro Takaku

Junichiro Urabe

Hajime Kato

Yuto Shiga

Kazuya Tobita

Youichi Kazuta

Nobuyuki Okuzawa

Noriaki Hamachi

Kazuhiko Ito

Toshinori Matsuura

Yuichi Takubo

Asami Takahashi

Mitsufumi Codama

Disclosed herein is a coil component that includes a resin body having a first resin-based insulating material and a second resin-based insulating material lower in relative permittivity than the first resin-based insulating material, a coil pattern embedded in the resin body and helically wound in a plurality of turns, and first and second terminal electrodes formed on a surface of the resin body and connected respectively to one and other ends of the coil pattern. The coil pattern has a part covered with the first resin-based insulating material and another part covered with the second resin-based insulating material.

Coil component

Disclosed herein is a coil component that includes a coil pattern embedded in an element body and helically wound in a plurality of turns. The element body includes a support body having a cavity formed therein and a first insulating layer stacked on the support body so as to cover the cavity, thereby forming a hollow space inside the element body. The coil pattern includes a plurality of first sections formed along an inner wall of the cavity and a plurality of second sections formed on the first insulating layer. One ends of the plurality of first sections are connected respectively to their corresponding one ends of the plurality of second sections. The other ends of the plurality of first sections are connected respectively to their corresponding other ends of the plurality of second sections.

Coil component and manufacturing method therefor

A multilayer coil component includes an element body, a coil, and a terminal electrode. The element body includes a first main face, second main face, first end face, second end face, first side face and second side face. The terminal electrode is connected to the coil. The terminal electrode includes a main-face electrode portion provided on the first main face. The coil includes a plurality of coil conductors. The plurality of coil conductors includes a first coil conductor disposed closest to the first main face to oppose to the main-face electrode portion and a second coil conductor disposed closer to the second main face than the first coil conductor. The first coil conductor has a width narrower than a width of the second coil conductor. The first coil conductor has an aspect ratio higher than an aspect ratio of the second coil conductor.

Multilayer coil component

Disclosed herein is a coil component that includes a coil pattern embedded in a resin body. The resin body includes a winding core area surrounded by the coil pattern and having a first surface and a substantially flat second surface different in the circumferential direction position from the first surface, and a first surrounding area covering the first surface of the winding core area. The coil pattern includes first sections extending along the first surface of the winding core area and second sections extending along the second surface of the winding core area. One ends of the first sections are connected respectively to their corresponding one ends of the second sections. The other ends of the first sections are connected respectively to their corresponding other ends of the second sections.

In a coilof a multilayer coil component, an end portionof a turnclosest to a side surfacein the facing direction of the side surfaceand a side surfaceis connected to a first external electrodeand an end portionof a turnclosest to the side surfacein the facing direction is connected to a second external electrode. When viewed from the facing direction, the area of the region where the turnand the second external electrodeface each other and the area of the region where the turnand the first external electrodeface each other are larger than the area of the region where turns other than the turnand the turnand the first external electrodeor the second external electrodeface each other.

In a coilof a multilayer coil component, an end portionof a turnclosest to a side surfacein the facing direction of the side surfaceand a side surfaceis connected to a first external electrodeand an end portionof a turnclosest to the side surfacein the facing direction of the pair of side surfacesandis connected to a second external electrode. The area at which the turnfaces the second external electrodeand the area at which the turnfaces the first external electrodeare smaller than the area at which turnsandother than the turnand the turnface the first external electrodeor the second external electrode

An organic EL display wherein electric connection between the electron injecting electrode layer and the electrode layer is improved, which is less likely to suffer from poor connection, and which exhibits low connection resistance is realized. A method for producing such an organic EL display is also realized. Such an organic EL display has an electrode structure which connects at least a terminal and an electron injecting electrode, and the electrode structure comprises an underlying layer,as a lower layer comprising a metal having low susceptibility to surface oxide layer formation, and an electrode layer,as an upper layer comprising a metal which has a susceptibility to surface oxide layer formation higher than that of the underlying layer,. The underlying layer,and the electron injecting electrode layer,are in direct contact with each other at least in some parts in the region where the electrode layer,is connected to said electron injecting layer

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Tokyo, Japan

Munehiro Takaku