A method for improving dielectric properties of an MLCC device

CN122245968APending Publication Date: 2026-06-19UNIV OF SCI & TECH OF CHINA +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
UNIV OF SCI & TECH OF CHINA
Filing Date
2026-05-22
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Existing multilayer ceramic capacitors (MLCCs) face bottlenecks in improving dielectric performance in terms of miniaturization and high capacitance. Current research methods are costly, have long development cycles, and are difficult to apply universally.

Method used

By forming a surface layer structure with a surface layer effect on the surface of cast ceramic film, and using a suitable heat treatment process, the dielectric properties of barium titanate-based cast ceramic film can be improved without changing the matrix material formulation, and performance optimization can be achieved in MLCC devices.

Benefits of technology

It significantly improves the dielectric constant of barium titanate-based cast film ceramics by at least 7% and enhances the dielectric properties of MLCC devices by at least 5%. It is suitable for existing production processes and has good prospects for industrialization.

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Abstract

This invention discloses a method for improving the dielectric properties of MLCC devices. Belonging to the field of ferroelectric ceramic materials technology, the method is based on the surface layer effect. By optimizing the debinding, sintering, and heat treatment processes of cast ceramic films, thin-film ceramics with significant surface layer effects are prepared, achieving an improvement of over 7% in both dielectric constant and capacitance. This method demonstrates that the thinner the cast film, the higher the proportion of the surface layer in the volume, and the stronger its control over dielectric properties. This provides technical support for improving the performance of ultra-thin dielectric layer MLCC devices, with the optimized MLCC devices showing a capacitance improvement of over 5%. This method requires no changes to the ceramic formulation or significant modifications to existing equipment, exhibiting good process compatibility and promising industrial application prospects. It is applicable to the performance optimization of MLCC devices and various ferroelectric cast ceramic materials.
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