Boron aluminum silicate mineral material, low temperature co-fired ceramic composite material, low temperature co-fired ceramic, composite substrate and preparation methods thereof

US10899669B2 · kind B2 · utility

Assignee

• GUANGDONG FENGHUA ADVANCED TECHNOLOGY HOLDING CO., LTD. · CN

Inventors

• Zhe Song · Boise, US
• Yun Liu · Zhuolan Township, TW
• Kun-Yuan Huang · Taipei, TW
• Luwei Fu · Tangxia, CN
• Zhenxiao Fu · Tangxia, CN
• Joanna Chu · Tangxia, CN
• Lasse Noren · Campbell, AU
• Tao Chen · Jersey City, US
• Shiwo Ta · Tangxia, CN

Key dates

• Filing date: Mar 13, 2018
• Grant date: Jan 26, 2021
• Expiry date: Mar 13, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2235/9607
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The present invention relates to a boroaluminosilicate mineral material, a low temperature co-fired ceramic composite material, a low temperature co-fired ceramic, a composite substrate and preparation methods thereof. A boroaluminosilicate mineral material for a low temperature co-fired ceramic, the boroaluminosilicate mineral material comprises the following components expressed in mass percentages of the following oxides: 0.41%-1.15% of Na2O, 14.15%-23.67% of K2O, 1.17%-4.10% of CaO, 0-2.56% of Al2O3, 13.19%-20.00% of B2O3, and 53.47%-67.17% of SiO2. The aforementioned boroaluminosilicate mineral material is chemically stable; a low temperature co-fired ceramic prepared from it not only has excellent dielectric properties, but also has a low sintering temperature, a low thermal expansion coefficient, and high insulation resistance; it is also well-matched with the LTCC process and can be widely used in the field of LTCC package substrates.