Method of unit level liquid crystal display device assembly process for liquid crystal on silicon
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United States of America Patent
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Nov 28, 2017
Grant Date -
Jun 29, 2017
app pub date -
Dec 16, 2016
filing date -
Dec 25, 2015
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Abstract
The present invention provides a method of unit level liquid crystal display device assembly process for liquid crystal on silicon. It starts with sawing silicon wafer and ITO glass substrate. Then good silicon dies and ITO glass dies will be picked and transferred to separate carriers. Alignment layers will respectively be coated on each silicon die and ITO glass die after cleaning. Then there are two options for the following steps. In method one, silicon die and ITO glass die lamination comes after coating frame adhesive. Then frame adhesive is cured. The liquid crystal will fill the cell and then seal the fill port. Die mounting, wire bonding and encapsulation will come along with external ITO connection to call it an end. In method two, frame adhesive precedes internal connection and LC one drop fill. Then silicon die and ITO glass die are laminated before frame adhesive cure. Afterwards die mount, wire bonding and encapsulation come last.
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