公开(公告)号：US20150034990A1

公开(公告)日：2015-02-05

申请号：US14516610

申请日：2014-10-17

申请人： KONINKLIJKE PHILLIPS N.V.

发明人： Daniel ROITMAN ,  Mark Melvin BUTTERWORTH ,  Matthias HEIDEMANN ,  Hans Helmut BECHTEL ,  Danielle Russell CHAMBERLIN ,  JOAN LIU

IPC分类号： H01L33/46 ,  H01L33/50 ,  H01L33/60 ,  H01L33/08

CPC分类号： H01L33/46 ,  H01L33/60

摘要： A light emission device comprising a light emitting element, a wavelength conversion (e.g. phosphor) element, and a filter that reduces Color over Angle (CoA) effects by at least partially reflecting light from the light emitting element that strike the filter at near-normal angles of incidence. In some embodiments, a combined phosphor and filter layer is formed over the LED die. The filter may comprise a dispersion of self-aligning moieties, such as dielectric platelets in a film that is vacuum laminated to the LED structure. Xirallic® Galaxy Blue pigment, comprising an aluminium oxide core coated on both sides with thin films of SnO2, and TiO2, and Ronastar® Blue, comprising Calcium Aluminum Borosilicate and TiO2 may provide the dielectric platelets.

摘要翻译： 一种发光装置，其包括发光元件，波长转换（例如磷光体）元件和通过至少部分地反射来自发光元件的光的滤光器，所述滤光器通过至少部分地反射来自近乎正常的滤光器的光 入射角。 在一些实施例中，在LED管芯上形成组合的磷光体和过滤层。 过滤器可以包括自对准部分的分散体，例如真空层压到LED结构的膜中的电介质片晶。 Xirallic®Galaxy Blue颜料，包括两侧涂有SnO2薄膜和TiO2的氧化铝芯和包含硼硅酸钙和TiO2的Ronastar®Blue可以提供电介质片晶。