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Dielectric ceramic composition and ceramic electronic component employing the same

A technology of dielectric ceramics and compositions, which is applied in the field of ceramic electronic components, can solve the problems such as the decrease of the Q value of the dielectric ceramic materials and the inability to exert the microwave characteristics of the dielectric ceramic electronic components.

Inactive Publication Date: 2007-01-03
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As a result, the Q value of the dielectric ceramic material decreases, and the original microwave characteristics of the dielectric ceramic electronic component cannot be exhibited.

Method used

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  • Dielectric ceramic composition and ceramic electronic component employing the same
  • Dielectric ceramic composition and ceramic electronic component employing the same
  • Dielectric ceramic composition and ceramic electronic component employing the same

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Embodiment Construction

[0016] figure 1 is xBiO representing the main component of the dielectric ceramic composition in the embodiment of the present invention 3 / 2 -yCaO-zNbO 5 / 2 Compositional diagram of the compositional range of the composition. figure 2 is a perspective view of the laminated resonator of the ceramic electronic part in this embodiment, image 3 , Figure 4 It is a longitudinal section view and a transverse section view. Figure 5A ~ Figure 5C It is an electrode pattern diagram of each inner layer conductor.

[0017] First, the dielectric ceramic composition will be described in detail. Table 1 shows the BiO of the main components of the ceramic composition in this embodiment 3 / 2 -CaO-NbO 5 / 2 molar ratio. x, y, and z represent molar ratios, x+y+z=1.0, and oxides, carbonates, and nitrates of the constituent elements can be used as starting materials for manufacturing the dielectric ceramic composition of this embodiment. , organic metal salts, etc. And it is desirable tha...

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Abstract

A dielectric ceramics includes a main ingredient, and a supplemental ingredient in an amount of 0.05 to 2 wt % for the main ingredient. The main ingredient is expressed by xBiO3 / 2-yCaO-zNbO5 / 2 and is within a scope of a specified quadrilateral region in a ternary system diagram, and the supplemental ingredient is a glass composition including at least SiO2, Li2O and MO (M includes at least one of Ca, Sr and Ba). A ceramic electronic component is produced by co-firing a dielectric layer composed of the dielectric ceramics and a conductive layer mainly composed of silver, and has a low degradation in Q value and excellent microwave characteristics.

Description

technical field [0001] In particular, the present invention relates to a dielectric ceramic composition useful in high-frequency devices such as resonators, filters, antennas, capacitors, inductors, and circuit boards in high-frequency regions such as microwaves and milliwaves, and the use of the composition. Ceramic electronic components. Background technique [0002] With the development of mobile communication equipment in recent years, laminated dielectric ceramic electronic parts in which dielectric ceramics and internal conductors are laminated to form circuits have been widely used. In order to obtain a compact and high-performance laminated dielectric ceramic electronic component, the dielectric characteristics of the dielectric ceramic are important. That is, a high dielectric constant value (εr) in the microwave region is required. It is also required that the dielectric loss (tan δ) is low, that is, its reciprocal Q value is high. It is further required that th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B3/12C04B35/01C04B35/00C04B35/645H01P7/08H01P7/10H03H9/17H05K1/03
CPCC04B35/638C04B2235/3298C04B35/495Y10T428/24917C04B2235/656C04B2235/36C04B2235/3409H05K1/0306C04B2235/3251C04B2235/3203C04B2235/3215C04B2235/3208C04B2235/3281C04B35/6455C04B2235/3213
Inventor 胜村英则齐藤隆一加贺田博司
Owner PANASONIC CORP