公开(公告)号：US09340727B2

公开(公告)日：2016-05-17

申请号：US14122392

申请日：2012-05-24

申请人： Shoji Takanashi ,  Yuji Takatsuka

发明人： Shoji Takanashi ,  Yuji Takatsuka

IPC分类号： B05D7/00 ,  C09K11/02 ,  C09K11/77

CPC分类号： C09K11/025 ,  C09K11/7734

摘要： A method for producing film-coated alkaline-earth metal silicate phosphor particles that can have improved light-emitting characteristics may include a coating film having high moisture resistance. Strontium-containing alkaline-earth metal silicate phosphor particles are pretreated with an alkaline-earth metal compound solution whose strontium compound concentration is 1 to 15% by mass with respect to the phosphor particles and whose pH is 6 or higher but 10 or lower. Then, a base layer of an aluminum organic metal compound is formed on the surface of the pretreated phosphor particles. Then, the phosphor particles are coated with a coating material composed of a partially-hydrolyzed condensate of a silane organic metal compound, and are then dried and heat-treated to form, on their surface, a coating film made of an amorphous inorganic compound mainly containing Si and O.

摘要翻译： 可以提供具有改善的发光特性的膜包覆的碱土金属硅酸盐荧光体颗粒的制造方法可以包括具有高耐湿性的涂膜。 含有锶的碱土金属硅酸盐荧光体颗粒用锶化合物浓度相对于荧光体粒子为1〜15质量％，pH为6以上且10以下的碱土类金属化合物溶液进行预处理。 然后，在预处理的荧光体颗粒的表面上形成铝有机金属化合物的基层。 然后，用由硅烷有机金属化合物的部分水解缩合物组成的涂料涂布荧光体颗粒，然后进行干燥和热处理，以在其表面上形成主要由无定形无机化合物制成的涂膜 含有Si和O.