Silicon nitride ceramic substrate and preparation process thereof: Fid-Bau Portal

Silicon nitride ceramic substrate and preparation process thereof

YUAN YUFEI / CHEN GANG / ZHANG GUANGMIN

The silicon nitride ceramic substrate comprises a vertically arranged heat dissipation plate, the lower end of the heat dissipation plate is fixedly connected with a bottom substrate, a heat dissipation channel capable of being opened and closed is arranged in the heat dissipation plate, the heat dissipation plate is movably connected with a packaging plate, an overturning area exists between the packaging plate and the heat dissipation plate, and an auxiliary heat dissipation piece is arranged in the overturning area. The packaging plate can be overturned in the overturning area and is in contact with the auxiliary heat dissipation piece, and the auxiliary heat dissipation piece is pushed to be in contact with the heat dissipation plate, so that the heat dissipation channel is opened; the method has the beneficial effects that the silicon nitride ceramic substrate is prepared through the six steps of powder grinding, compression molding, high-temperature sintering, slotted hole processing, surface treatment and quality inspection, the silicon nitride ceramic substrate has high thermal conductivity and good stability and durability, the heat dissipation efficiency can be further improved in cooperation with the heat dissipation channel and the cleaning component, and the service life of the silicon nitride ceramic substrate is prolonged. The working temperature of the LED lamp is reduced, and the lighting effect is improved.

本发明涉及一种氮化硅陶瓷基板及其制备工艺，包括竖向设置的散热板，散热板的下端固定连接有底基板，散热板内设有能开闭的散热通道，散热板活动连接有封装板，封装板与散热板之间存在翻转区域，翻转区域内设有辅助散热件，封装板可在翻转区域内翻转并与辅助散热件接触，将辅助散热件推移至与散热板接触，从而打开散热通道；本发明的有益效果是：通过粉末研磨、压制成型、高温烧结、槽孔加工、表面处理、质量检验六个步骤制备出氮化硅陶瓷基板，氮化硅陶瓷基板具有高导热性，同时具有良好的稳定性和耐用性，再配合散热通道和清洁部件，能进一步提高散热效率，降低LED灯的工作温度，提高光效。

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