A multi-device lid for a micro device wafer has a plurality of micro devices. The multi-device lid includes a multi-lid substrate configured to cover the plurality of micro devices of the micro device wafer. The multi-lid substrate has a trench pattern with intersection portions and non-intersection portions on a first side of the multi-lid substrate. The trench pattern is configured such that the intersection portions of the trench pattern extend adjacent to at least two of the plurality of micro devices when the multi-lid substrate is coupled to the micro device wafer.

 
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> Method of alignment of liquid crystals comprising exposing an alignment material to an interference pattern

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