Liquid crystal display device including first to third wirings and a pixel electrode, and method of manufacturing the same

摘要

In a method of manufacturing a liquid crystal display device, a process for forming a first substrate includes the steps; forming a first wiring electrically connected with a switching element and extending in a first direction, forming an insulating film covering the first wiring, painting an electrically conductive film including electrically conductive material on the insulating film, and forming a second wiring electrically connected with the switching element extending in a second direction orthogonally crossing the first direction, and a pixel electrode electrically connected with the switching element apart from the second wiring by patterning the electrically conductive film. A second substrate is formed by forming a main common electrode extending in the second direction. A liquid crystal display panel is manufactured by holding liquid crystal material between the first substrate and the second substrate while the main common electrode faces the second wiring.

主权项

1. A liquid crystal display device, comprising:
a first substrate including:
a first wiring extending in a first direction,a third wiring extending in the first direction at a distance from the first wiring,a first insulating film covering the first wiring and the third wiring,a second wiring formed on the first insulating film and extending in a second direction orthogonally crossing the first direction,a switching element electrically connected with the first and second wirings,a second insulating film covering the second wiring and the switching element,a pixel electrode formed on the second insulating film and electrically connected with the switching element via a contact hole penetrating through the first insulating film and the second insulating film,a first shield electrode formed on the second insulating film apart from the pixel electrode and facing the first wiring,a second shield electrode formed on the second insulating film apart from the pixel electrode and facing the second wiring, anda first alignment film covering the pixel electrode and the first and second shield electrodes, a second substrate including a main common electrode facing the second wiring and extending in the second direction, and a second alignment film covering the main common electrode; and a liquid crystal layer held between the first substrate and the second substrate containing liquid crystal molecules; wherein the pixel electrode comprises a sub-pixel electrode above and overlapping with the third wiring, the contact hole overlaps with the sub-pixel electrode, the pixel electrode and the first and second shield electrodes are formed of one of materials selected from the group consisting of carbon nanotube, gold nanowire, silver nanowire, graphene, and conductive polymers, the switching element comprises a semiconductor layer and a drain electrode, the contact hole comprises a first contact hole penetrating the first insulating film and a second contact hole penetrating the second insulating film, the semiconductor layer extends below the third wiring and the second wiring, and the drain electrode contacts the semiconductor layer via the first contact hole and contacts the sub-pixel electrode via the second contact hole, and the second contact hole overlaps with the first contact hole.