LTCC raw material tape material, substrate and preparation method

A technology of raw material tape and inorganic material, applied in the field of substrate and preparation, LTCC raw material tape material, can solve the problem of difficult and low melting point metal co-firing, etc., and achieve the effect of good co-firing performance, smooth surface and uniform thickness

Active Publication Date: 2021-06-29
上海晶材新材料科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the above-mentioned shortcoming of prior art, the object of the present invention is to provide a kind of LTCC raw tape material, substrate and preparation method, be used to solve the LTCC raw tape material with medium and high dielectric constant in the prior art that is difficult to match with low Co-firing of melting point metals

Method used

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  • LTCC raw material tape material, substrate and preparation method
  • LTCC raw material tape material, substrate and preparation method
  • LTCC raw material tape material, substrate and preparation method

Examples

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Embodiment 1

[0049] This embodiment provides a LTCC raw tape material, in which the LTCC raw tape material includes 52% to 55% of inorganic material components, and 45% to 48 % of organic material components, wherein, based on the mass percentage of the inorganic material components, it includes 60% to 85% of main materials, 10% to 35% of auxiliary materials and 3% to 25% of sintering aids, and the main materials include CaTiO 3 (CT) ceramics, the auxiliary material includes Li 2 MgTi 3 o 8 (LMT) ceramics, Li 2 ZnTi 3 o 8 (LZT) ceramics and Li 2 MgSiO 4 At least one of (LMS) ceramics, the sintering aid comprising BaO—B 2 o 3 -ZnO-SiO 2 (BBZS) glass and ZnO-B 2 o 3 -SiO 2 At least one of (ZBS) glass.

[0050] Specifically, the inorganic material composition may include values ​​within any range of 52%, 53%, 54%, 55%, etc., and the organic material composition may include values ​​within any range of 45%, 46%, 47%, 48%, etc. value. In terms of the mass percentage of the inorga...

Embodiment 2

[0095] This embodiment provides an LTCC substrate, the LTCC substrate includes the LTCC raw tape material in Embodiment 1, and the LTCC raw tape material will not be introduced here.

[0096] This embodiment also provides a method for preparing an LTCC substrate, which includes preparing the LTCC raw tape material by the method described in Embodiment 1, and stacking the LTCC raw tape materials to form a green body, and At room temperature, heat up to 500°C at a heating rate of 1°C / min, hold at 500°C for 3 hours for debinding, and then raise the temperature to 890°C-920°C at a heating rate of 5°C / min after debinding is completed Keeping the temperature for 2 hours to 4 hours to complete the sintering, so as to prepare the LTCC substrate.

[0097] Specifically, the LTCC raw tape material can be cut into a required size, such as 100mm×100mm, cross-laminated such as 10 layers, 8 layers, etc., vacuumed, and isostatically pressed into a green body, and then Put the biscuit into th...

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Abstract

The invention provides an LTCC raw material tape material, a substrate and a preparation method. Li-based ceramic with relatively low sintering temperature is adopted in inorganic material components, so that the dielectric constant of a mixture can be effectively adjusted in the sintering process, and the sintering assisting effect can be achieved. In organic material components, a solvent is selected from an alcohol-ketone mixed solvent which is low in boiling point, easy to volatilize and good in solubility with the binder, so that the tape casting effect is good, and the LTCC raw material tape material which is smooth in surface and uniform in thickness is formed. The medium-high dielectric constant LTCC teflon tape material and the LTCC substrate which have the dielectric constant of 40-80, the dielectric loss of 1.0*10<-3> to 2*10<-3> and good cofiring performance with low-melting-point metal slurry can be prepared.

Description

technical field [0001] The invention belongs to the field of electronic ceramic materials and manufacturing thereof, and in particular relates to an LTCC raw tape material, a substrate and a preparation method. Background technique [0002] LTCC (Low Temperature Co-fired Ceramics) material refers to low-temperature co-fired ceramic materials. It is a new material technology developed by Hughes Company in 1982. It makes low-temperature sintered ceramic powder into a precise and dense raw material belt. The required circuit pattern is produced on the tape by laser drilling, micro-hole grouting, precision conductor paste printing and other processes, and multiple passive components (such as low-capacity capacitors, resistors, filters, impedance converters, couplings, etc.) Devices, etc.) embedded in the multilayer ceramic substrate, and then stacked together, the inner and outer electrodes can be made of silver, copper, gold and other metals, respectively, and sintered at 800 °...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/465C04B35/622C04B35/64
CPCC04B35/465C04B35/622C04B35/64C04B2235/3203C04B2235/3206C04B2235/3232C04B2235/3284C04B2235/3418C04B2235/6025C04B2235/6567C04B2235/6562
Inventor 兰开东李自豪王升彭梓
Owner 上海晶材新材料科技有限公司
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