摘要:
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.
摘要:
Disclosed herein is a composite dielectric composition having a small variation of capacitance with temperature, comprising a combination of a polymer matrix exhibiting a positive or negative variation of capacitance with temperature and a ceramic filler exhibiting a negative or positive variation of capacitance with temperature which is reciprocal to that of the polymer matrix; and a signal-matching embedded capacitor prepared by using the same composition. Particularly, the present invention provides a composite dielectric composition comprising a polymer matrix exhibiting a positive or negative variation of capacitance with temperature and a ceramic filler exhibiting a variation of capacitance which is reciprocal to that of the polymer matrix; and a signal-matching embedded capacitor formed of the same composition and having a variation of capacitance with temperature, ΔC/C×100(%), of not more than 5%. The composite dielectric composition of the present invention can be used in preparation of the signal-matching embedded capacitor due to a small variation of capacitance with temperature.
摘要翻译:本文公开了一种具有小的电容变化与温度的复合电介质组合物,其包括表现出电容与温度的正或负变化的聚合物基体和陶瓷填料的组合,所述陶瓷填料表现出与温度成反比的电容的负或正变化 与聚合物基体的相同; 以及通过使用相同组成制备的信号匹配嵌入式电容器。 特别地,本发明提供一种复合电介质组合物,其包含显示电容与温度的正或负变化的聚合物基质和表现出与聚合物基体相反的电容变化的陶瓷填料; 以及具有相同组成并且具有不大于5%的电容与温度变化的信号匹配嵌入式电容器,并且Dgr; C / C×100(%)。 本发明的复合电介质组合物由于电容随温度的变化小而可用于制备信号匹配嵌入式电容器。
摘要:
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, BaTiO3 of about 80 wt % or more, and an accessory component, CuBi2O4 and ZnO—B2O3—SiO2-based glass of about 20 wt % or less.
摘要翻译:提供一种电介质组合物和使用其的多层陶瓷电容器嵌入式低温共烧陶瓷衬底。 电介质组合物包括约80重量%以上的主成分BaTiO 3和约20重量%以下的辅助成分CuBi 2 O 4和ZnO-B 2 O 3 -SiO 2基玻璃。
摘要:
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, BaTiO3 of about 80 wt % or more, and an accessory component, CuBi2O4 and ZnO—B2O3—SiO2-based glass of about 20 wt % or less.
摘要翻译:提供一种电介质组合物和使用其的多层陶瓷电容器嵌入式低温共烧陶瓷衬底。 电介质组合物包括约80重量%以上的主成分BaTiO 3和约20重量%以下的辅助成分CuBi 2 O 4和ZnO-B 2 O 3 -SiO 2基玻璃。
摘要:
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 ABO3 and 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.
摘要:
There is provided a method of manufacturing a non-shrinkage ceramic substrate, and a non-shrinkage ceramic substrate using the same. A method of manufacturing a non-shrinkage ceramic substrate by firing a ceramic laminate including an internal electrode circuit pattern according to an aspect of the invention may include: laminating at least one constraining ceramic sheet on each of the upper and lower surfaces of the ceramic laminate to form constraining layers; performing a primary firing process on the ceramic laminate having the constraining layers thereon; polishing the surface of the ceramic laminate from which the constraining layers are removed; forming ceramic paste on the polished surface of the ceramic laminate while exposing connection terminals of the internal electrode circuit pattern to the outside environment through openings in the ceramic paste; forming a surface electrode on the surface of the ceramic paste by patterning so that the surface electrode is electrically connected to the connection terminals; and performing a secondary firing process so that the surface electrode adheres to the ceramic paste.
摘要:
A method of fabricating a ceramic substrate includes: preparing a firing theta; forming a ceramic laminated body comprising at least one internal confinement layer on the ceramic theta; providing a temperature-compensation ceramic layer on at least one of a top surface of the ceramic laminated body and a bottom surface of the ceramic laminated body contacting the firing theta, the temperature-compensation ceramic layer having a different initial firing shrinkage temperature than the ceramic laminated body; and firing the ceramic laminated body.
摘要:
A method of manufacturing a multilayer ceramic substrate according to an aspect of the invention may include: manufacturing a ceramic laminate including a glass component; laminating constraining layers on upper and lower parts of the ceramic laminate; performing primary firing within a first temperature range that does not allow crystallization of the glass component included in the ceramic laminate; removing the constraining layers and forming an external electrode on the ceramic laminate after the primary firing is completed; and performing secondary firing of the ceramic laminate having the external electrode formed thereon within a second temperature range higher than the first temperature range.