Glass composition for low temperature sintering, dielectric composition and multilayer ceramic capacitor using the same
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsSung Bum Sohn, Kang Heon Hur, Eun Sang Na, Tae Ho Song, Han Seong Jung, Chan Kong Kim
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Abstract
The invention relates to a glass composition and a glass frit adequate for low temperature sintering agent at 1,100° C. or less, and a dielectric composition and a multilayer ceramic capacitor using the same. The glass composition comprises aLi2O-bK2O-cCaO-dBaO-eB2O3-fSiO2, in which a, b, c, d, e and f satisfy following relationships: a+b+c+d+e+f=100, 2≦a≦10, 2≦b≦10, 0≦c≦25, 0≦d≦25, 5≦e≦20, and 50≦f≦80.
Claims7
A dielectric composition comprising:
- a main component of BaTiO3;
- and
- sub-components containing a glass composition expressed by a formula:
- aLi2O-bK2O-cCaO-dBaO-eB2O3-fSiO2, where a+b+c+d+e+f=100, 2≦a≦10, 2≦b≦10, 0≦c≦25, 0≦d≦25, 5≦e≦20, and 50≦f≦80,
- wherein the sub-components comprise, based on 100 mole of the main component, 1.0 to 3.0 mole of the glass composition, 0.5 to 2.0 mole of MgCO3, 0.3 to 1.0 mole of rare earth oxide and 0.05 to 1.0 mole of MnO, where the rare earth oxide is at least one selected from a group consisting of Y2O3, Ho2O3, Dy2O3 and Yb2O3.
A multilayer ceramic capacitor comprising a plurality of dielectric layers, a plurality of internal electrodes alternating with the dielectric layers and external electrodes electrically connected to the internal electrodes,
- wherein each of the dielectric layers comprises a main component of BaTiO3 and sub-components containing a glass composition expressed by a formula:
- aLi2O-bK2O-cCaO-dBaO-eB2O3-fSiO2, where a+b+c+d+e+f=100, 2≦a≦10, 2≦b≦10, 0≦c≦25, 0≦d≦25, 5≦e≦20, and 50≦f≦80,
- wherein the sub-components comprise, based on 100 mole of the main component, 1.0 to 3.0 mole of the glass composition, 0.5 to 2.0 mole of MgCO3, 0.3 to 1.0 mole of rare earth oxide and 0.05 to 1.0 mole of MnO, where the rare earth oxide is at least one selected from a group consisting of Y2O3, Ho2O3, Dy2O3 and Yb2O3.
Dependencies are inferred from the claim text.