Patent ID: 8659736

Claim:
A dual mode liquid crystal display device including a memory mode and a dynamic mode, comprising: first and second substrates facing each other and including a display area and a non-display area; a first electrode on an inner surface of the first substrate and having a plate shape; a first insulating layer on the first electrode; a second electrode and a third electrode on the first insulating layer, the second and third electrodes being spaced apart from each other and extending along a first direction; an auxiliary line in the non-display area, wherein one end of all third electrodes in the display area are connected to the auxiliary line; a fourth electrode on an inner surface of the second substrate; and a liquid crystal layer interposed between the first and second substrates and including chiral dopants, wherein liquid crystal molecules of the liquid crystal layer are stably arranged in a first twist state and a second twist state, and wherein the first and second twist states are used for the memory mode and the second twist state and a vertical alignment state, in which the liquid crystal molecules are vertically arranged with respect to the first and second substrates, are used for the dynamic mode.