发明授权
- 专利标题： LED with current confinement structure and surface roughening
- 专利标题（中）： LED具有电流限制结构和表面粗糙化
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申请号： US12581759申请日： 2009-10-19
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公开(公告)号： US08541788B2公开(公告)日： 2013-09-24
- 发明人: Steven P. Denbaars , Shuji Nakamura , Max Batres
- 申请人： Steven P. Denbaars , Shuji Nakamura , Max Batres
- 申请人地址： US NC Durham
- 专利权人： Cree, Inc.
- 当前专利权人： Cree, Inc.
- 当前专利权人地址： US NC Durham
- 代理机构： Myers Bigel Sibley & Sajovec, P.A.
- 主分类号： H01L27/15
- IPC分类号： H01L27/15
摘要：
A light emitting diode having a vertical orientation with an ohmic contact on portions of a top surface of the diode and a reflective layer adjacent the light emitting region of the diode. This light emitting diode includes a confinement structure. The confinement structure may be an opening in the reflective layer generally beneath the top ohmic contact that defines a non-contact area between the reflective layer and the light emitting region of the diode to encourage current flow to take place other than at the non-contact area to in turn decrease the number of light emitting recombinations beneath the ohmic contact and increase the number of light emitting recombinations in the areas not beneath said ohmic contact. The LED may include roughened emitting surfaces to further enhance light extraction.
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