Many kinds of processes have been used to make flexible LCDs. In this paper, we fabricate a flexible LC device by replica molding method - using Poly(dimethylsiloxane) (PDMS) rather than plastic to be the substrate. The PDMS can not only act as the substrate but also the alignment-layer in flexible LCDs; thus there is no need to coat additional alignment-layer on the flexible substrates. One significant achievement of our method is to increase the flexibility of rollable LC devices. The other one is to decrease the processing steps compared with those in other conventional processes.