Patent ID: 8456585
Filing Date: 2013-06-04
Classification: G02F,H01L

Abstract:
1. A method of fabricating a liquid crystal display device comprising: providing a first substrate having a first region and a second region; forming an active pattern in the first and second regions of the first substrate, wherein each active pattern is divided into a first area at a central portion of the active pattern, a pair of second areas and a pair of third areas; forming a first insulation film on the first substrate including the active pattern; forming a first gate electrode with a low-resistance conductive material on only a portion of the first area of the active pattern with the first insulation film interposed therebetween; forming a second gate electrode which is formed of a conductive material including molybdenum or molybdenum alloy to entirely cover the first gate electrode on only the first area of the active pattern with the first insulation film interposed therebetween, wherein the first area of the active layer is non-doped; doping a low density n− impurity ion at the pair of second and third areas of the active pattern in the first and second regions of the first substrate using the first and second gate electrodes as a mask; forming a first photosensitive film pattern to cover the first and second gate electrodes of the first region of the first substrate and cover the entire second region of the first substrate; forming N type source and drain regions at the pair of third areas of the active pattern of the first region of the first substrate by doping an n+ impurity ion using the first photosensitive film pattern as a mask and then forming LDD (lightly doped drain) regions at the pair of second areas of the active pattern of the first region of the first substrate; forming a second photosensitive film pattern to cover the entire first region of the first substrate; forming P type source and drain regions at the pair of second and third areas of the active pattern of the second region of the first substrate by doping a p+ impurity ion using the second photosensitive film pattern as a mask; forming a second insulation film on the first substrate formed the first and second gate electrodes; forming N type source and drain electrodes electrically connected with the N type source and drain regions on the first region of the first substrate and forming P type source and drain electrodes electrically connected with the P type source and drain regions on the second region of the first substrate; and attaching the first and second substrates.