Patent ID: 7468771
Filing Date: 2008-12-23
Classification: G02F

Abstract:
1. A method for manufacturing an OCB mode liquid crystal display panel, which comprises: forming a pair of electrode substrates, a liquid crystal layer which is held between said pair of electrode substrates and has liquid crystal molecules whose alignment state is controlled within a display area by a drive voltage applied from said electrode substrates, and a pair of alignment films which are disposed on said electrode substrates in contact with said liquid crystal layer and whose rubbing directions are set parallel to each other, as one display panel; and performing an aging process for obtaining a flow of the liquid crystal molecules in the rubbing directions of the alignment films by applying to said liquid crystal layer a drive voltage that periodically changes in a black insertion ratio determined independently from that of black insertion driving for preventing the alignment state of the liquid crystal molecules from being inverse-transferred from a bend alignment to a splay alignment, said aging process being continued for a predetermined period required for moving impurity ions contained in said liquid crystal layer outside said display area, wherein substantially black and substantially white display voltages are alternately applied for each frame period as the voltage for said aging process, and said predetermined period is within a range of 1 to 12 hours for which said aging process is continued.