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    • 8. 发明公开
    • PHOSPHOR IN INORGANIC BINDER FOR LED APPLICATIONS
    • 磷灰石在无机玻璃BINDEMITTELFÜRLED-ANWENDUNGEN
    • EP2831931A1
    • 2015-02-04
    • EP13721402.9
    • 2013-03-20
    • Koninklijke Philips N.V.
    • BASIN, GrigoriyKUIPER, SteinMARTIN, Paul, Scott
    • H01L33/50C09K11/02
    • H01L33/0095C09K11/02C09K11/08H01L33/005H01L33/501H01L33/502H01L33/505H01L33/58H01L2224/16225H01L2924/181H01L2933/0041H05B33/10Y10T156/1062H01L2924/00012
    • A method for fabricating an LED/phosphor structure is described where an array of blue light emitting diode (LED) dies are mounted on a submount wafer. A phosphor powder is mixed with an organic polymer binder, such as an acrylate or nitrocellulose. The liquid or paste mixture is then deposited over the LED dies or other substrate as a substantially uniform layer. The organic binder is then removed by being burned away in air, or being subject to an O2 plasma process, or dissolved, leaving a porous layer of phosphor grains sintered together. The porous phosphor layer is impregnated with a sol-gel (e.g., a sol-gel of TEOS or MTMS) or liquid glass (e.g., sodium silicate or potassium silicate), also known as water glass, which saturates the porous structure. The structure is then heated to cure the inorganic glass binder, leaving a robust glass binder that resists yellowing, among other desirable properties.
    • 描述了一种用于制造LED /荧光体结构的方法,其中将蓝色发光二极管(LED)裸片的阵列安装在底座晶片上。 将荧光体粉末与有机聚合物粘合剂如丙烯酸酯或硝化纤维素混合。 然后将液体或糊状混合物沉积在LED管芯或其它基底上,作为基本均匀的层。 然后通过在空气中燃烧或经历O 2等离子体处理或溶解而除去有机粘合剂,留下烧结在一起的多孔磷光体颗粒层。 多孔磷光体层用溶胶 - 凝胶(例如,TEOS或MTMS的溶胶 - 凝胶)或饱和多孔结构饱和的液体玻璃(例如硅酸钠或硅酸钾)(也称为水玻璃)浸渍。 然后将该结构加热以固化无机玻璃粘合剂,留下坚固的玻璃粘合剂,其耐受黄变以及其它所需的性能。