公开(公告)号：KR101345583B1

公开(公告)日：2013-12-30

申请号：KR1020120085191

申请日：2012-08-03

Applicant: 한국교통대학교산학협력단

Inventor： 류정호 ,  정준호

IPC: C09K11/08 ,  H01L33/26 ,  H01L33/48 ,  F21S2/00

Abstract: The present invention relates to an up-conversion phosphor in which light emitting efficiency is enhanced, and in which compositional formula is marked as A1-xBO4:Lnx. The A element is one or more elements selected from 2+ valent metal elements, the B element is one or more elements selected among W and Mo, and Ln element is one or more elements selected from lantanoids. The up-conversion phosphor of the present invention absorbs near infrared ray wavelength and emits visible light so that the up-conversion phosphor can have relatively lower costs, and form an LED package using infrared ray LED which is harmless for human body. In addition, the up-conversion phosphor of the present invention concurrently dops two or more lantanoids in order to emit visible light in which wavelengths emitted from each lantanoid are mixed, and forms the LED package, which shows white light, and a back light unit using the same using a single phosphor by letting the mixed visible light to show white light.

Abstract translation: 本发明涉及其中发光效率提高的上变频荧光体，其中组成式被标记为A1-xBO4：Lnx。 A元素是选自2+价金属元素中的一种或多种元素，B元素是选自W和Mo中的一种或多种元素，并且Ln元素是选自蓝宝石中的一种或多种元素。 本发明的上变换荧光体吸收近红外线波长并发射可见光，使得上变频荧光体可以具有相对较低的成本，并且使用对人体无害的红外线LED形成LED封装。 此外，本发明的上变频荧光体同时掺杂两种或更多种兰黄素，以便发射从每个蓝宝石发射的波长的可见光，并形成显示白光的LED封装，以及背光单元 通过使混合的可见光显示白光，使用单一的荧光体。