发明申请
US20090065798A1 PACKAGING TECHNIQUE FOR THE FABRICATION OF POLARIZED LIGHT EMITTING DIODES 有权
用于制造极化发光二极管的包装技术

PACKAGING TECHNIQUE FOR THE FABRICATION OF POLARIZED LIGHT EMITTING DIODES
摘要:
A polarized light emitting diode (LED) includes a marker indicating a polarization direction. A package for the LED also includes a marker indicating the polarization direction. The markers on the LED and package are used for mutual alignment, wherein the LED is attached in a favorable orientation with respect to a package, so that the polarization direction of emitted light from the package is apparent. The marker is placed on the LED before die separation and the marker is placed on the package before alignment. The marker on the LED comprises a photolithographic pattern, an asymmetric die shape, a notch on the die, or a scratch on the die, while the marker on the package comprises an electrode shape or pattern, an asymmetric package shape, a notch on the package, or a scratch on the package. Finally, the LED or package may be installed in an external circuit or system that also indicates the polarization direction.
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