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    • 65. 发明专利
    • DE10340271A1
    • 2005-04-14
    • DE10340271
    • 2003-08-29
    • OSRAM OPTO SEMICONDUCTORS GMBH
    • BAUR JOHANNESHAERLE VOLKERHAHN BERTHOLD
    • H01L33/22H01L33/40H01L33/44H01L33/00
    • A thin-layer LED chip ( 5 ) is claimed, comprising an epitaxial layer sequence ( 6 ) that is disposed on a carrier element ( 2 ) and contains an electromagnetic-radiation-generating active region ( 8 ), and a reflective layer ( 3 ) that is disposed on a principal surface of the epitaxial layer sequence ( 6 ) facing toward the carrier element ( 2 ) and reflects at least a portion of the electromagnetic radiation generated in the epitaxial layer sequence ( 6 ) back thereinto, in which a structured layer ( 1 ) containing a glass material is applied to a radiation extraction surface ( 7 ) of the epitaxial layer sequence ( 6 ) facing away from said carrier element ( 2 ) and has a structure that includes mutually adjacent protuberances ( 5 ) that taper in the direction away from the radiation extraction surface ( 7 ) and have a lateral grid size that is smaller than one wavelength of an electromagnetic radiation emitted from the epitaxial layer sequence ( 6 ). The structured layer ( 1 ) is advantageously applied as spin-on glass and structured by grayscale lithography.