Liquid crystal display panel and method of fabricating the same
View Patent ↗A liquid crystal display panel includes an upper alignment film and a lower alignment film positioned with liquid crystals therebetween to allow the liquid crystals to be aligned in a designated direction, and at least one of the upper and lower alignment film includes a first alignment film, and a second alignment film disposed on the first alignment film with holes for partially exposing the first alignment film. Liquid crystals in an area corresponding to the holes are aligned in a first direction by the first alignment film, and remaining liquid crystals are aligned in a second direction by the second alignment film.
1. A method of fabricating a liquid crystal display panel including an upper alignment film and a lower alignment film provided with liquid crystals therebetween, wherein at least one of the upper or lower alignment film is formed by the steps comprising:
forming a first alignment film;
forming a second alignment film with a plurality of holes on the first alignment film, the holes partially exposing the first alignment film; and
wherein the liquid crystals of an area corresponding to the plurality of holes are aligned in a first direction, and the liquid crystals disposed over the second alignment film are aligned in a second direction, and
wherein forming the second alignment film comprises:
coating a polyimide including a poly vinyl cinnamate compound on the first alignment film;
condensing the poly vinyl cinnamate compound molecules to each other within the polyimide; and
removing the condensed poly vinyl cinnamate compound molecules within the polyimide using dichloroethane solution to define the holes for partially exposing the first alignment film.
2. The method of fabricating the liquid crystal display panel of claim 1 , wherein the first direction is a substantially vertical direction and the second direction is a substantially horizontal direction.
3. The method of fabricating the liquid crystal display panel of claim 1 , wherein the first direction is a substantially horizontal direction and the second direction is a substantially vertical direction.
4. The method of fabricating the liquid crystal display panel of claim 1 , wherein the first alignment film is a vertical alignment film for aligning the liquid crystals in a vertical direction and the second alignment film is a horizontal alignment film for aligning the liquid crystals in a substantially horizontal direction.
5. The method of fabricating the liquid crystal display panel of claim 1 , wherein the first alignment film is a horizontal alignment film for aligning the liquid crystals in a substantially horizontal direction and the second alignment film is a vertical alignment film for aligning the liquid crystals in a vertical direction.
6. The method of fabricating the liquid crystal display panel of claim 1 , wherein forming the second alignment film comprises:
curing the polyimide; and
rubbing the polyimide.
7. The method of fabricating the liquid crystal display panel of claim 1 , wherein an average pretilt angle of the liquid crystals is between about 30 degrees and about 60 degrees.
8. The method of fabricating the liquid crystal display panel of claim 1 , wherein the liquid crystals are reoriented by a vertical electric field between a common electrode positioned at a lower portion of the upper alignment film and pixel electrodes positioned at a lower portion of the lower alignment film.