Packaging assemblies for optically interactive devices and methods of
forming the packaging assemblies in an efficient manner that eliminates
or reduces the occurrence of process contaminants. In a first embodiment,
a transparent cover is attached to a wafer of semiconductor material
containing a plurality of optically interactive devices. The wafer is
singulated, and the optically interactive devices are mounted on an
interposer and electrically connected with wire bonds. In a second
embodiment, the optically interactive devices are electrically connected
to the interposer with back side conductive elements. In a third
embodiment, the optically interactive devices are mounted to the
interposer prior to attaching a transparent cover. A layer of encapsulant
material is formed over the interposer, and the interposer and
encapsulant material are cut to provide individual packaging assemblies.
In a fourth embodiment, the optically interactive devices are mounted in
a preformed leadless chip carrier.