Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Oxide ceramic material, ceramic substrate employing the same, ceramic laminate device, and power amplifier module

An oxide ceramic, oxide technology, applied in power amplifiers, ceramic layered products, ceramics, etc., can solve the problem that the processing method is not suitable for mass production.

Inactive Publication Date: 2004-09-01
PANASONIC CORP
View PDF0 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, its processing method is not suitable for mass production
On the other hand, the material obtained by adding manganese oxide and vanadium to bauxite involves environmental problems because the added material is a toxic material and its added amount is several percent, not a small amount.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Oxide ceramic material, ceramic substrate employing the same, ceramic laminate device, and power amplifier module

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0065] The method for preparing the molded body and the green sheet is not particularly limited, for example, uniaxial molding, isotropic pressure pressing, doctor blade method, calendering method, roll coater method and the like can be used.

[0066] As the base film for the protective sheet, polyethylene-based resin, polyester-based resin, paper, or the like can be used. Also, as a method of forming vias in the insulating sheet, punching or laser processing can be used.

[0067] As a sintering environment for molded bodies and laminates, the atmosphere can generally be used because Ag can be used as an internal conductor.

[0068] In the present invention, alumina powder and specific oxide powder are mixed, which can be sintered at a temperature significantly lower than conventional sintered alumina. This is particularly beneficial in view of the production energy and costs of the furnaces used in production. Also, since the mixture can be sintered at a temperature not hig...

Embodiment 1

[0079] As a raw material, alumina (Al 2 o 3 ) powder and various metal oxide powders of reagent grade or above purity. They were weighed for each sample so as to obtain the compositions shown in Table 1, and the sum of their masses was 200 g, and they were subjected to wet mixing for 12 hours by a ball mill using alumina balls. After the resulting powder was dried, a small amount of an aqueous solution of polyvinyl alcohol was mixed, and the mixture was passed through a 32-mesh sieve for granulation. The powder is molded into a mold while uniaxially applying 1 t / cm 2 pressure so as to have a diameter of 12 mm and a thickness of about 1 mm. The obtained molded body was heated at 500°C in air for 1 hour to remove the binder, and thereafter, it was sintered at 900°C to 1000°C for 1 hour. Measure the size and mass of the sintered body to calculate the sintered density.

[0080] Also, a plurality of said sintered bodies were prepared and pulverized, and the absolute density th...

Embodiment 2

[0089] In the same manner as in Example 1, powders of alumina, niobium oxide, copper oxide, titanium oxide, silver oxide, and bismuth oxide were prepared and mixed so that, for each sample, alumina accounted for 93% by mass and the other The total of the five components is 7% by mass, where the total amount of niobium oxide, copper oxide, titanium oxide, silver oxide and bismuth oxide is assumed to be 100% by mass, which have the mass percentages shown in Table 2. The mixture was sintered at 900° C. or 950° C. for 2 hours to prepare sintered bodies, and their relative densities were measured.

[0090] Also, on the upper and lower surfaces of each sintered body having a relative density exceeding 90%, gold electrodes were formed by sputtering, and dielectric characteristics were evaluated. The results are shown in Table 2.

[0091]

serial number

The mass ratio of auxiliary components

Relative density(%)

Dielectric loss (1MHz)

Nb 2...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
strengthaaaaaaaaaa
strengthaaaaaaaaaa
strengthaaaaaaaaaa
Login to View More

Abstract

An oxide ceramic material is provided to contain aluminum oxide as a principal component, and at least one selected from A and B shown below as an auxiliary component: A: niobium oxide and copper oxide B: copper oxide, titanium oxide, and silver oxide. With this, it is possible to provide an oxide ceramic material having sinterability at a low temperature and a high heat conductivity, as well as a ceramic substrate, a ceramic laminate device, and a power amplifier module employing the same.

Description

technical field [0001] The present invention relates to a kind of containing bauxite (aluminum oxide, Al 2 o 3 ) an oxide ceramic material as a main component, a multilayer ceramic substrate using this material and containing a conductor therein, a ceramic laminate device, and a power amplifier module using this material. Background technique [0002] Multilayer wiring substrates on which semiconductor integrated circuits (ICs) are mounted are roughly divided into organic substrates mainly made of organic materials such as glass epoxy and those mainly made of ceramics such as alumina or glass. Inorganic substrates. Inorganic substrates have been widely used and are generally characterized by high heat resistance, high thermal conductivity, low thermal expansion, low dielectric loss, and high reliability. [0003] These inorganic multilayer substrates are roughly classified into HTCC (High Temperature Cofired Ceramics) type and LTCC (Low Temperature C...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/117H05K1/03
CPCH05K3/4629C04B2235/3281B32B2311/08C04B2235/3232C04B2237/343C04B2235/3251C04B2235/6025C04B2235/77C04B2235/3263C04B2235/9607C04B2235/96C04B2237/408C04B2235/3291C04B2235/656H05K1/0306C04B35/117C04B35/6303C04B2237/62B32B18/00C04B2235/3298Y10T428/12618Y10T428/1275Y10T428/12896
Inventor 井上修原田健史奥山浩二郎
Owner PANASONIC CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com