Title:
GLASS FOR SUBSTRATE AND CERAMIC BASE USING THE SAME
Document Type and Number:
Japanese Patent JP3240271
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a chemically stable borosilicate glass composition and a ceramic substrate containing the glass and to provide a method for producing the ceramic substrate.
SOLUTION: This glass for a substrate comprises 55-67mol% calculated as SiO2 of silicon oxide, 3-11mol% calculated as Al2O3 of aluminum oxide, 16-26mol% calculated as B2O3 of boron oxide and 3-11mol% each calculated as SrO, CaO, MgO or ZnO of at least one of strontium oxide, calcium oxide, magnesium oxide and zinc oxide. The glass for a substrate has a small amount of orthoboric acid formed and will not cause inconvenience in terms of production of a ceramic substrate. The ceramic substrate using the glass for a substrate can be sintered at a low temperature and is low in dielectric constant and dielectric dissipation factor and high in flexural strength.
Inventors:
Hiroaki Hasegawa
Toshinobu Miyakoshi
Toshinobu Miyakoshi
Application Number:
JP33744496A
Publication Date:
December 17, 2001
Filing Date:
December 03, 1996
Export Citation:
Assignee:
TDK Co., Ltd.
International Classes:
C04B35/16; C03C3/091; C03C8/02; C03C8/14; C03C14/00; H05K1/03; (IPC1-7): C03C3/091; C04B35/16; H05K1/03
Domestic Patent References:
| JP1201041A | ||||
| JP4325436A | ||||
| JP6171976A | ||||
| JP7277762A | ||||
| JP5167209A | ||||
| JP58151345A |
Attorney, Agent or Firm:
Youichi Ishii