BOARD FOR SEMICONDUCTOR DEVICE

PURPOSE: To improve heat dissipation properties through thinning of a board itself by adding zirconia to principal component of alumina and then adding one kind or more of additive, selected from a group of yttria, calcia, magnesia and ceria, thereto thereby preparing sintered ceramic having enhance...

Full description

Saved in:
Bibliographic Details
Main Authors MIYAMA HIROSHI, OOIWA SEIGO, SAITO SHIGEMASA, MOROZUMI AKIRA, NISHIURA SHINJI, NOZAKI TOSHIO
Format Patent
LanguageEnglish
Published 30.07.1996
Edition6
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
SEMICONDUCTOR DEVICES
Online AccessGet full text

Cover

More Information
Summary:PURPOSE: To improve heat dissipation properties through thinning of a board itself by adding zirconia to principal component of alumina and then adding one kind or more of additive, selected from a group of yttria, calcia, magnesia and ceria, thereto thereby preparing sintered ceramic having enhanced fracture toughness. CONSTITUTION: A ceramic board 2a is laminated on a heat dissipation base through adhesive or the like while being sandwiched by copper plates 2b, 2c thus constituting a CBC board 2. The ceramic board 2a in the CBC board 2 is produced by adding zirconia to principal component of alumina and then further adding one kind or more of additive selected from a group of yttria, calcia, magnesia and ceria thereby preparing a sintered cerarnic. Since the bending strength of the CBC board 2 is enhanced and the flexure thereof is increased, it can be made thin without causing any crack and the thermal conductivity can be enhanced geometrically.
Bibliography:Application Number: JP19950006103