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US 12,542,240 B2Granted
Multilayered capacitor and manufacturing method thereof
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsJinseong Kim, Myungwoo Lee, Wonsik Jeong
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Abstract
Disclosed is a multilayered capacitor including a capacitor body including a dielectric layer and an internal electrode and an external electrode disposed outside the capacitor body. The dielectric layer includes a plurality of dielectric crystal grains, the dielectric crystal grains include barium titanate as a main component and Dy2O3 as a subcomponent, and the barium titanate includes about 0.005 to about 0.065 wt % of Cl.
Claims19
A multilayered capacitor, comprising:
- a capacitor body including a dielectric layer and an internal electrode;
- and
- an external electrode disposed outside the capacitor body,
- wherein the dielectric layer includes a plurality of dielectric crystal grains,
- the dielectric crystal grains include barium titanate as a main component and Dy2O3 as a subcomponent,
- the barium titanate includes about 0.005 to about 0.065 wt % of Cl, and
- about 1.0 to about 3.0 parts by mole of Dy2O3, about 0 to about 0.3 parts by mole of MnO2, about 0 to about 0.3 parts by mole of V2O5, about 0 to about 2.0 parts by mole of BaCO3, about 0 to about 1.0 part by mole of SiO2, about 0 to about 0.6 parts by mole of Al2O3, and about 0 to about 2.0 parts by mole of ZrO2 are included based on 100 parts by mole of the main component.
4 more elements
A method for manufacturing a multilayered capacitor, comprising:
- preparing a dielectric powder including barium titanate including about 0.005 to about 0.065 wt % of Cl as a main component;
- mixing about 3.0 to about 7.0 parts by mole of a subcomponent including Dy2O3 based on 100 parts by mole of the main component to prepare a dielectric green sheet using a mixture of the main component and subcomponent, and forming a conductive paste layer on a surface of the dielectric green sheet;
- stacking the dielectric green sheets on which the conductive paste layer is formed to manufacture a dielectric green sheet stack;
- firing the dielectric green sheet stack to manufacture a capacitor body;
- and
- forming an external electrode on one surface of the capacitor body,
- wherein the preparing of the dielectric powder includes:
- preparing a raw material mixture by wet-mixing a barium (Ba) precursor including about 0 to about 0.1 wt % of Cl and a titanium (Ti) precursor including about 0 to about 0.08 wt % of Cl, and
- calcining the raw material mixture to prepare a dielectric powder.
6 more elements
A method for manufacturing a multilayered capacitor, comprising
- preparing a dielectric powder including barium titanate including about 0.005 to about 0.065 wt % of Cl as a main component;
- mixing about 3.0 to about 7.0 parts by mole of a subcomponent including Dy2O3 based on 100 parts by mole of the main component to prepare a dielectric green sheet using a mixture of the main component and subcomponent, and forming a conductive paste layer on a surface of the dielectric green sheet;
- stacking the dielectric green sheets on which the conductive paste layer is formed to manufacture a dielectric green sheet stack;
- firing the dielectric green sheet stack to manufacture a capacitor body;
- and
- forming an external electrode on one surface of the capacitor body,
- wherein, about 0 to about 3.0 parts by mole of Dy2O3, about 0 to about 0.3 parts by mole of MnO2, about 0 to about 0.3 parts by mole of V2O5, about 0 to about 2.0 parts by mole of BaCO3, about 0 to about 1.0 part by mole of SiO2, about 0 to about 0.6 parts by mole of Al2O3, and about 0 to about 2.0 parts by mole of ZrO2 are included based on 100 parts by mole of the main component.
4 more elements
Dependencies are inferred from the claim text.