公开(公告)号：US20140191265A1

公开(公告)日：2014-07-10

申请号：US14136171

申请日：2013-12-20

申请人： MICHAEL D. CAMRAS ,  MICHAEL R. KRAMES ,  WAYNE L. SNYDER ,  FRANK M. STERANKA ,  ROBERT C. TABER ,  JOHN J. UEBBING ,  DOUGLAS W. POCIUS ,  TROY A. TROTTIER ,  CHRISTOPHER H. LOWERY ,  GERD O. MUELLER ,  REGINA B. MUELLER-MACH

发明人： MICHAEL D. CAMRAS ,  MICHAEL R. KRAMES ,  WAYNE L. SNYDER ,  FRANK M. STERANKA ,  ROBERT C. TABER ,  JOHN J. UEBBING ,  DOUGLAS W. POCIUS ,  TROY A. TROTTIER ,  CHRISTOPHER H. LOWERY ,  GERD O. MUELLER ,  REGINA B. MUELLER-MACH

IPC分类号： H01L33/58

CPC分类号： H01L33/58 ,  H01L33/20 ,  H01L33/32 ,  H01L33/405 ,  H01L33/502 ,  H01L33/62

摘要： Light emitting devices with improved light extraction efficiency are provided. The light emitting devices have a stack of layers including semiconductor layers comprising an active region. The stack is bonded to a transparent optical element.

摘要翻译： 提供了具有提高光提取效率的发光器件。 发光器件具有包括有源区的半导体层的一叠层。 叠层结合到透明光学元件上。

公开(公告)号：US20120021543A1

公开(公告)日：2012-01-26

申请号：US13252398

申请日：2011-10-04

申请人： Michael D. CAMRAS ,  MICHAEL R. KRAMES ,  WAYNE L. SNYDER ,  FRANK M. STERANKA ,  ROBERT C. TABER ,  JOHN J. UEBBING ,  DOUGLAS W. POCIUS ,  TROY A. TROTTIER ,  CHRISTOPHER H. LOWERY ,  GERD O. MUELLER ,  REGINA B. MUELLER-MACH

发明人： Michael D. CAMRAS ,  MICHAEL R. KRAMES ,  WAYNE L. SNYDER ,  FRANK M. STERANKA ,  ROBERT C. TABER ,  JOHN J. UEBBING ,  DOUGLAS W. POCIUS ,  TROY A. TROTTIER ,  CHRISTOPHER H. LOWERY ,  GERD O. MUELLER ,  REGINA B. MUELLER-MACH

IPC分类号： H01L33/58

CPC分类号： H01L33/58 ,  H01L33/20 ,  H01L33/32 ,  H01L33/405 ,  H01L33/502 ,  H01L33/62

摘要： Light emitting devices with improved light extraction efficiency are provided. The light emitting devices have a stack of layers including semiconductor layers comprising an active region. The stack is bonded to a transparent lens having a refractive index for light emitted by the active region preferably greater than about 1.5, more preferably greater than about 1.8. A method of bonding a transparent lens to a light emitting device having a stack of layers including semiconductor layers comprising an active region includes elevating a temperature of the lens and the stack and applying a pressure to press the lens and the stack together. Bonding a high refractive index lens to a light emitting device improves the light extraction efficiency of the light emitting device by reducing loss due to total internal reflection. Advantageously, this improvement can be achieved without the use of an encapsulant.

摘要翻译： 提供了具有提高光提取效率的发光器件。 发光器件具有包括有源区的半导体层的一叠层。 叠层结合到具有由有源区发射的光的折射率的透明透镜，优选大于约1.5，更优选大于约1.8。 将透明透镜粘合到具有包括有源区的半导体层的层叠的发光器件的方法包括提升透镜和叠层的温度并施加压力以将透镜和叠层压在一起。 将高折射率透镜粘合到发光器件通过减少由于全内反射引起的损耗来提高发光器件的光提取效率。 有利地，可以在不使用密封剂的情况下实现这种改进。