专利检索 ap:("The Regents of The University of California" OR "Japan Science AND Technology Agency") AND inv:"GAO, Yan" 第 1 页

1.

发明授权
HIGHLY EFFICIENT GALLIUM NITRIDE BASED LIGHT EMITTING DIODES HAVING SURFACE ROUGHENING 有权
标题翻译： WITH氮化镓表面粗糙化高效LEDS

公开(公告)号：EP1697983B1

公开(公告)日：2012-06-13

申请号：EP03819251.4

申请日：2003-12-09

申请人： The Regents of The University of California , Japan Science and Technology Agency

发明人： FUJII, Tetsuo , GAO, Yan , HU, Evelyn, L. , NAKAMURA, Shuji

IPC分类号： H01L33/32 , H01L33/22 , H01L33/00 , H01L21/465 , H01L29/06 , H01L29/20

CPC分类号： H01L33/22 , H01L33/007 , H01L33/0079 , H01L33/32 , H01L33/60 , H01L2224/16225

摘要： A gallium nitride (GaN) based light emitting diode (LED), wherein light is extracted through a nitrogen face (N-face) (42) of the LED and a surface of the N-face (42) is roughened into one or more hexagonal shaped cones. The roughened surface reduces light reflections occurring repeatedly inside the LED, and thus extracts more light out of the LED. The surface of the N-face (42) is roughened by an anisotropic etching, which may comprise a dry etching or a photo-enhanced chemical (PEC) etching.

2.

发明公开
HIGHLY EFFICIENT GALLIUM NITRIDE BASED LIGHT EMITTING DIODES VIA SURFACE ROUGHENING 有权
标题翻译： WITH氮化镓表面粗糙化高效LEDS

公开(公告)号：EP1697983A1

公开(公告)日：2006-09-06

申请号：EP03819251.4

申请日：2003-12-09

申请人： The Regents of the University of California

发明人： FUJII, Tetsuo , GAO, Yan , HU, Evelyn, L. , NAKAMURA, Shuji

IPC分类号： H01L21/465 , H01L29/06 , H01L29/20 , H01L33/00

CPC分类号： H01L33/22 , H01L33/007 , H01L33/0079 , H01L33/32 , H01L33/60 , H01L2224/16225

摘要： A gallium nitride (GaN) based light emitting diode (LED), wherein light is extracted through a nitrogen face (N-face) (42) of the LED and a surface of the N-face (42) is roughened into one or more hexagonal shaped cones. The roughened surface reduces light reflections occurring repeatedly inside the LED, and thus extracts more light out of the LED. The surface of the N-face (42) is roughened by an anisotropic etching, which may comprise a dry etching or a photo-enhanced chemical (PEC) etching.