发明授权
US07385229B2 Flip-chip light emitting diode with a thermally stable multiple layer reflective p-type contact 有权
倒装芯片发光二极管,具有热稳定的多层反射型p型接触

  • 专利标题: Flip-chip light emitting diode with a thermally stable multiple layer reflective p-type contact
  • 专利标题(中): 倒装芯片发光二极管,具有热稳定的多层反射型p型接触
  • 申请号: US11482362
    申请日: 2006-07-07
  • 公开(公告)号: US07385229B2
    公开(公告)日: 2008-06-10
  • 发明人: Hari S. Venugopalan
  • 申请人: Hari S. Venugopalan
  • 申请人地址: US OH Valley View
  • 专利权人: Lumination LLC
  • 当前专利权人: Lumination LLC
  • 当前专利权人地址: US OH Valley View
  • 代理机构: Fay Sharpe LLP
  • 主分类号: H01L33/00
  • IPC分类号: H01L33/00
Flip-chip light emitting diode with a thermally stable multiple layer reflective p-type contact
摘要:
A p-type contact (30) is disclosed for flip chip bonding and electrically contacting a p-type group III-nitride layer (28) of a group III-nitride flip chip light emitting diode die (10) with a bonding pad (60). A first palladium layer (42) is disposed on the p-type group III-nitride layer (28). The first palladium layer (42) is diffused through a native oxide of the p-type group III-nitride layer (28) to make electrical contact with the p-type group III-nitride layer (28). A reflective silver layer (44) is disposed on the first palladium layer (42). A second palladium layer (46) is disposed on the silver layer (44). A bonding stack (48) including at least two layers (50, 52, 54) is disposed on the second palladium layer (46). The bonding stack (48) is adapted for flip chip bonding the p-type layer (28) to the bonding pad (60).
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