Patent ID: 7738048

Claim:
A liquid crystal display device with a liquid crystal interposed between a first insulating substrate and a second insulating substrate, wherein said liquid crystal display device comprises: a plurality of gate lines prepared in parallel to each other and disposed on said first insulating substrate; a plurality of data lines prepared in parallel to each other and being disposed to intersect via said gate line insulating layer; each of regions enclosed by said gate lines and said data lines is regarded as a unit pixel region, and a region where said plurality of gate lines and said plurality of data lines cross each other makes up a display region; said liquid crystal display device further comprising a thin-film transistor, consisting of a gate electrode extending from said gate line to said unit pixel region, a gate insulator to cover said gate line and said gate electrode, a semiconductor layer sequentially prepared on said gate insulator, an ohmic contact layer separately prepared on surface of said semiconductor layer, and a source electrode and a drain electrode formed on said separated ohmic contact layer; and said insulating layer at the intersection of said gate line and said data line has a 2-layer structure, comprising said gate insulator and an insulator with low dielectric constant prepared by ink jet coating on an upper layer or on a lower layer of said gate insulator.