Active solid-state devices (e.g. – transistors – solid-state diode – Incoherent light emitter structure – With reflector – opaque mask – or optical element integral...
Reexamination Certificate
2005-06-07
2005-06-07
Kang, Donghee (Department: 2811)
Active solid-state devices (e.g., transistors, solid-state diode
Incoherent light emitter structure
With reflector, opaque mask, or optical element integral...
C257S094000, C257S096000, C257S097000, C257S103000, C372S045013, C372S046012
Reexamination Certificate
active
06903379
ABSTRACT:
A light emitting diode incorporating an active emitting layer (14) overlying a transparent substrate (10) is provided with a reflective diffraction grating (30) on the bottom surface of the substrate. Emitted light passing downwardly through the substrate is diffracted outwardly toward edges (21) of the substrate and passes out of the die through the edges. This effect enhances the external quantum efficiency of the diode.
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Article “Phase Masks and Grey-Tone Masks”, Pierre Sixt, Litomask by CSEM, Neuchatel, Switzerland.
Venugopalan Hari
Wang Michael
Fay Sharpe Fagan Minnich & McKee LLP
GELcore LLC
Kang Donghee
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