Yageo Corporation

Che-Yi Su

Wen-Hsi Lee

Chun-Te Lee

Yi-Jung Ling

Yi-Feng Yang

The present invention mainly relates to a method for reducing shrinkage during sintering low-temperature-cofired ceramics, the ceramics comprising a dielectric portion and a heterogeneous material portion, the method comprising the steps of: (a) providing a monolithic structure, the monolithic structure comprising a dielectric body and a constraining layer; the dielectric body comprising at least one dielectric layer that comprises at least one active area; wherein said active area is disposed with at least one heterogeneous material pattern; the constraining layer positioned on the top of the dielectric body comprising at least one window wherein the edge of the active area of the dielectric layer each falls within the edge of the window in the vertical direction; (b) firing the monolithic structure; and (c) singulating the monolithic structure along a cutting line to provide the low-temperature-cofired ceramics, wherein the cutting line is disposed in the area formed between the edge of the window and the edge of the active area.

Method for reducing shrinkage during sintering low-temperature-cofired ceramics

The present invention relates to a novel ZnTiO-based dielectric material, having the composition represented by the formula (ZnMg)(TiMnD)O, wherein D is an element having a valence of 5 or above, 0&#x2266;a&#x2266;0.5, c&#x2266;b&#x2266;0.1, 0&#x3c;c&#x2266;0.1, 1&#x2266;d&#x2266;1.5, which has properties of ultra low sintering temperature, high reliability, and high dielectric strength, and is capable of being applied to produce low capacitance multilayer ceramic capacitor with high quality factor, low ESR, and high insulation resistance. The present invention also relates to a method of preparing such a novel ZnTiO-based dielectric material.

Dielectric material and the method of preparing the same

The present invention provides a multilayer ceramic composition comprising at least one layer of dielectric material Mand at least one layer of dielectric material M, wherein passive components are buried in both layers of dielectric material Mand Mthat prevent each other from shrinkage in the X and Y dimensions during firing. Each layer of the multilayer ceramic composition according to the invention can be used as a substrate for burying the passive component and has the ability to prevent other layer with different dielectric constant from shrinkage. Hence, the multilayer ceramic composition has the advantages of smaller size and a better circuit precision.

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Kaohsiung, Taiwan

Che-Yi Su