公开(公告)号：EP2115789A2

公开(公告)日：2009-11-11

申请号：EP08719476.7

申请日：2008-02-26

申请人： Koninklijke Philips Electronics N.V. ,  Philips Lumileds Lighting Company LLC

发明人： MUELLER, Gerd ,  MUELLER-MACH, Regina ,  BASIN, Grigoriy ,  WEST, Robert Scott ,  MARTIN, Paul S. ,  LIM, Tze-Sen ,  EBERLE, Stefan

IPC分类号： H01L33/00

CPC分类号： H01L33/505 ,  B29C41/14 ,  B29C41/20 ,  B29C41/22 ,  B29K2995/0031 ,  B29L2011/00 ,  H01L24/97 ,  H01L25/167 ,  H01L33/504 ,  H01L33/54 ,  H01L33/56 ,  H01L2224/16225 ,  H01L2224/45139 ,  H01L2224/48091 ,  H01L2224/73204 ,  H01L2224/73265 ,  H01L2224/97 ,  H01L2924/00011 ,  H01L2924/01005 ,  H01L2924/01006 ,  H01L2924/01013 ,  H01L2924/01023 ,  H01L2924/01033 ,  H01L2924/01047 ,  H01L2924/01055 ,  H01L2924/01058 ,  H01L2924/01079 ,  H01L2924/01082 ,  H01L2924/014 ,  H01L2924/12041 ,  H01L2924/15787 ,  H01L2924/181 ,  H01L2924/1815 ,  H01L2924/351 ,  H01L2933/0041 ,  H01L2924/00014 ,  H01L2224/81 ,  H01L2924/00 ,  H01L2924/01049 ,  H01L2924/00012

摘要： Overmolded lenses and certain fabrication techniques are described for LED structures. In one embodiment, thin YAG phosphor plates are formed and affixed over blue LEDs mounted on a submount wafer. A clear lens is then molded over each LED structure during a single molding process. The LEDs are then separated from the wafer. The molded lens may include red phosphor to generate a warmer white light. In another embodiment, the phosphor plates are first temporarily mounted on a backplate, and a lens containing a red phosphor is molded over the phosphor plates. The plates with overmolded lenses are removed from the backplate and affixed to the top of an energizing LED. A clear lens is then molded over each LED structure. The shape of the molded phosphor-loaded lenses may be designed to improve the color vs. angle uniformity. Multiple dies may be encapsulated by a single lens. In another embodiment, a prefabricated collimating lens is glued to the flat top of an overmolded lens.

摘要翻译： LED结构描述了包覆成型的透镜和某些制造技术。 在一个实施例中，薄的YAG磷光体板被形成并固定在安装在底座晶片上的蓝色LED上。 然后在单个模制过程中在每个LED结构上模制透明透镜。 然后将LED从晶片分离。 模制的透镜可以包括红色磷光体以产生较暖的白光。 在另一个实施例中，荧光板首先临时安装在背板上，并且在荧光体板上模制含有红色荧光体的透镜。 具有包覆成型透镜的板从背板上移除并固定在通电LED的顶部。 然后在每个LED结构上模制透明透镜。 模制的含磷光体的透镜的形状可以设计成改善颜色与角度均匀性。 多个管芯可以由单个透镜封装。 在另一个实施例中，将预制准直透镜胶合到包覆成型透镜的平坦顶部。

公开(公告)号：EP2338082A1

公开(公告)日：2011-06-29

申请号：EP09787170.1

申请日：2009-09-10

申请人： Philips Lumileds Lighting Company, LLC ,  Koninklijke Philips Electronics N.V.

发明人： KESSELS, Marcus J.H. ,  SMITT, Willem Sillevis ,  MUELLER, Gerd ,  BIERHUIZEN, Serge

IPC分类号： G02F1/13357

CPC分类号： G02F1/133609 ,  G02F1/133603 ,  G02F2001/133614

摘要： A backlight for a color LCD includes white light LEDs formed using a blue LED die with a layer of red and green phosphors over it. The attenuation by the LCD layers of the blue light component of the white light is typically greater as the blue wavelength becomes shorter. In order to achieve a uniform blue color component across the surface of an LCD screen and achieve uniform light output from one LCD to another, the blue light leakage of the phosphor layer is tailored to the dominant or peak wavelength of the blue LED die. Therefore, the white points of the various white light LEDs in a backlight should not match when blue LED dies having different dominant or peak wavelengths are used in the backlight. The different leakage amounts through the tailored phosphor layers offset the attenuation vs. wavelength of the LCD layers.

公开(公告)号：EP2338082B1

公开(公告)日：2016-07-27

申请号：EP09787170.1

申请日：2009-09-10

申请人： Philips Lumileds Lighting Company, LLC ,  Koninklijke Philips N.V.

发明人： KESSELS, Marcus J.H. ,  SMITT, Willem Sillevis ,  MUELLER, Gerd ,  BIERHUIZEN, Serge

IPC分类号： G02F1/13357

CPC分类号： G02F1/133609 ,  G02F1/133603 ,  G02F2001/133614