Samsung Electro-mechanics Co., Ltd.

Min Ji Ko

Beom Joon Cho

Jin Ho Kim

Jong Myeon Lee

Eun Tae Park

Ho Sung Choo

Myung Whun Chang

Soo Hyun Lyoo

Hyo Soon Shin

Jeong Joo Kim

Provided are a dielectric composition and a multi-layer ceramic capacitor embedded low temperature co-fired ceramic substrate using the same. The dielectric composition includes a main component, BaTiOof about 80 wt % or more, and an accessory component, CuBiOand ZnO&#x2014;BO&#x2014;SiO-based glass of about 20 wt % or less.

Dielectric composition and multilayer ceramic capacitor embedded low temperature co-fired ceramic substrate using the same

Disclosed herein is a polymer-ceramic dielectric composition. The dielectric composition comprises a polymer and a ceramic dispersed in the polymer wherein the ceramic is composed of a material having a perovskite structure represented by ABOand a metal oxide dopant and has an electrically charged surface. According to the dielectric composition, the surface of the ceramic is electrically charged to induce space-charge polarization (or interfacial polarization) at the polymer/ceramic interface, resulting in an increase in dielectric constant. Since the dielectric composition has a high dielectric constant particularly in a low-frequency range, it can be suitably used to produce decoupling capacitors.

Polymer-ceramic dielectric composition, embedded capacitor using the dielectric composition and printed circuit board having the capacitor embedded therein

Disclosed is a composition for forming a dielectric, which is applied to an embedded capacitor with a high dielectric constant, a capacitor produced using the composition, and a PCB provided with the capacitor. The composition includes 40 to 99 vol % of thermoplastic or thermosetting resin, and 1 to 60 vol % of semiconductive filler. Alternatively, the composition includes 40 to 95 vol % of thermoplastic or thermosetting resin, and 5 to 60 vol % of semiconductive ferroelectric substance. Furthermore, the present invention provides the capacitor, produced using the composition, and the PCB provided with the capacitor. Therefore, the dielectric, which is produced using the composition including the semiconductive filler or semiconductive ferroelectric substance, is advantageous in that the dielectric constant is high and a dielectric loss is low. The dielectric is usefully applied to produce an embedded capacitor with the high dielectric constant and the PCB provided with the embedded capacitor.

Composition for forming dielectric, capacitor produced using composition, and printed circuit board provided with capacitor

Growing community of inventors

Kyungki-do, South Korea

Min Ji Ko