螢光陶瓷板製備方法

專利類型

發明

專利國別 (專利申請國家)

中華民國

專利申請案號

105133660

專利證號

I 605031

專利獲證名稱

螢光陶瓷板製備方法

專利所屬機關 (申請機關)

國立虎尾科技大學

獲證日期

2017/11/11

技術說明

傳統螢光材料製程方式大都採用固態反應法或濕式化學法，雖可以大量且穩定製作螢光材料，但對於應用上仍須透過後段塗佈或點膠方式，才得以製作光轉換層，且傳統高溫爐燒結一般是經過緩慢的升溫、高溫持溫及自然冷卻三個階段，製程時間較長。本雷射高溫燒結為一創新的熱處理及成形技術發明，該雷射燒結技術可以製作3D複雜的零件及精確計算零件尺寸，尤其透過快速加熱及快速冷卻的方式達到高溫燒結的效果，使製程的時間縮短一個數量級以上，同時也因雷射光與材料的接觸時間很短，故不會明顯地影響到周圍的區域。另外雷射燒結溫度高於材料熔點，可產生液相燒結作用，進而填補孔洞區域或設計微孔洞，使材料更緻密化或達成高出光率，這是一般傳統的燒結方式所做不到的。 Traditional phosphor materials are manufactured by mass production and stable processes of solid state reactions or wet chemical routes. However, post dispensing or gluing treatments are needed to make efficient LEDs. Traditional sintering is a three step process, including slow heating rates, temperature holding, and furnace cooling. Therefore, much processing time happens in the traditional sintering process. This invention proposes an innovative heat treatment and forming technique, which could also make some 3D complex parts with exact dimensions. Especially, at least one order of processing time can be saved using this laser sintering process because of both fast heating and cooling features. In addition, the contact time for laser beams and materials is quite short. Hence, the affected zone can be minimized apparently. Moreover, liquid phases and periodic holes can be induced to enhance the sintering density and fill the voids, resulting in a higher light extraction.

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