Patent ID: 9291863
Filing Date: 2016-03-22
CPC Classification: G02F,H01L

Claim Text:
1. A liquid crystal display device comprising: a substrate comprising a display region and a periphery region surrounding the display region thereon; a plurality of pixels disposed in the display region, each of the pixels comprising a pixel electrode over the substrate; a plurality of thin film transistors each electrically connected to the pixel electrode; a plurality of display signal lines each electrically connected to each of the thin film transistors; a peripheral common electric potential line provided with a common electric potential, disposed on the periphery region along each of four sides of the display region, and is formed of metal; an insulation film provided to cover the pixel electrodes; and a common electrode disposed over the insulating film and the pixel electrodes so as to cover the display region and so as to extend over and be in contact electrically with the peripheral common electric potential line, wherein the common electrode has a plurality of slits at each of the pixels, and wherein the peripheral common electric potential line is connected with each of four sides of the common electrode through a plurality of contact holes formed in each of four sides of the periphery region, wherein a lateral electric field formed between the pixel electrodes and the common electrode with the insulating film interposed therebetween through the slits of the common electrode so that the lateral electric field controls an alignment direction of liquid molecules, wherein a bridge at an intersection of the peripheral common electric potential line and the display signal line is provided so that the peripheral common electric potential line is formed of a same layer as a display signal line.