A PALC panel is filled with LC material by creating a partial vacuum in the LC space and a peripheral receiving space inward of an attachment bead which secures the lower substrate assembly to the upper substrate assembly and introducing sufficient LC material into the receiving space to fill the LC...http://www.google.com.au/patents/US6100946?utm_source=gb-gplus-sharePatent US6100946 - PALC display panel with LC receiving space having a volume substantially greater than the volume of LC space