High-frequency low-loss LTCC substrate material capable of being electroplated or chemically plated, and preparation method thereof

Abstract

The invention relates to the technical field of low-temperature co-fired ceramics of electronic ceramic materials, and concretely relates to a high-frequency low-loss LTCC substrate material capable of being electroplated or chemically plated, and a preparation method thereof. According to the high-frequency low-loss LTCC substrate material capable of being electroplated or chemically plated, and the preparation method thereof, the material is prepared by compounding 30-60 wt% of lanthanum borate crystallized glass, 1-5 wt% of amorphous glass with high softening temperature and 35-65 wt% of a ceramic material. The lanthanum borate crystallized glass comprises, by weight, 15-20% of CaO, 30-40% of B2O3, 35-45% of La2O3, 0-5% of Al2O3 and 0-6% of M2O. M2O is one or a mixture of two of Na2O, K2O and Li2O. The amorphous glass with the high softening temperature comprises, by weight, 60-75% of SiO2, 20-30% of B2O3, 0-2% of Al2O3 and 0-5% of Na2O. The ceramic material is one or a mixture of two of SiO2, Al2O3, TiO2, BaTiO3, CaTiO3 or MgTiO3.

Description

technical field [0001] The invention relates to the technical field of low-temperature co-fired ceramics for electronic ceramic materials, in particular to a high-frequency and low-loss LTCC substrate material capable of electroplating or electroless plating and a preparation method thereof. Background technique [0002] With the rapid growth of microwave / millimeter wave application requirements, especially the higher and higher application frequency, materials and conductors are required to have low loss in the application frequency range. Low temperature co-fired ceramics have low conductor loss (gold, silver) It is one of the best choices for high-density packaging and microwave / millimeter wave packaging. [0003] The most widely used high-frequency low-loss LTCC material is the A6 raw ceramic tape material of Ferro Company in the United States. The material of A6 raw porcelain belt is CaO-B 2 o 3 -SiO 2 Crystallized glass system, CaO-B 2 o 3 -SiO 2 The crystallize...

AI Technical Summary

Problems solved by technology

After glass crystallization, only a small amount of glass remains, and CaAl is formed due to sintering 2 B 2 o 7 Crystal phase and crystallized glass-ceramic precipitation of LaBO 3 crystalline phase, consumes a large amount of glass network former B 2 o 3 , the softening temperature of the remaining glass is greatly increased, which makes the matching between LTCC materials and conductors poor, and the sintering flatness of LTCC substrates with less than 10 layers of 9K7 materials is difficult to control

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