发明授权
- 专利标题： Polarized white light devices using non-polar or semipolar gallium containing materials and transparent phosphors
- 专利标题（中）： 使用非极性或半极性含镓材料和透明荧光体的极化白光装置
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申请号： US12754886申请日： 2010-04-06
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公开(公告)号： US08299473B1公开(公告)日： 2012-10-30
- 发明人: Mark P. D'Evelyn , Rajat Sharma , Eric M. Hall , Daniel F. Feezell
- 申请人： Mark P. D'Evelyn , Rajat Sharma , Eric M. Hall , Daniel F. Feezell
- 申请人地址： US CA Fremont
- 专利权人： Soraa, Inc.
- 当前专利权人： Soraa, Inc.
- 当前专利权人地址： US CA Fremont
- 代理机构： Kilpatrick Townsend & Stockton LLP
- 主分类号： H01L27/15
- IPC分类号： H01L27/15 ; H01L33/00
摘要：
A light emitting device includes a substrate having a surface region and a light emitting diode overlying the surface region. The light emitting diode is fabricated on a semipolar or nonpolar GaN containing substrate and emits electromagnetic radiation of a first wavelength. The diode includes a quantum well region characterized by an electron wave function and a hole wave function. The electron wave function and the hole wave function are substantially overlapped within a predetermined spatial region of the quantum well region. The device has a transparent phosphor overlying the light emitting diode. The phosphor is excited by the substantially polarized emission to emit electromagnetic radiation of a second wavelength.
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