Patent ID: 8173225

Claim:
A method of fabricating an organic insulating layer used for an array substrate for a liquid crystal display device, comprising: forming a base material layer on a substrate; forming a photocurable organic material layer having a first liquid phase polymeric precursor, a second liquid phase polymeric precursor and a photo-initiator on the base material, the first liquid phase polymeric precursor having a single-functional group material, the second liquid phase polymeric precursor having at least one of a two-functional group material and a three-functional group material; disposing a stamp having a convex portion and a concave portion over the photocurable organic material layer, wherein the stamp has a first thickness corresponding to the convex portion, a second thickness corresponding to the concave portion and a third thickness corresponding to other portions excluding the concave and convex portions, wherein the third thickness is smaller than the first thickness and greater than the second thickness; moving at least one of the substrate and the stamp such that the stamp depresses the photocurable organic material layer, wherein a contact hole, which exposes a portion of the base material layer and corresponds to the convex portion, is formed in the photocurable organic material layer and a spacer, which corresponds to the concave portion, is formed to protrude from the photocurable organic material layer; curing the photocurable organic material layer having the contact hole through the stamp; and detaching the stamp from the cured photocurable organic material layer, wherein the first liquid phase polymeric precursor has a weight percentage with a range of 70 to 90, the second liquid phase polymeric precursor has a weight percentage with a range of 7 to 27, and the photo-initiator has a weight percentage with a range of 1 to 3, wherein the first liquid phase polymeric precursor includes at least one of 2-(4-benzoyl-3-hydroxyphenoxy)ethyl acrylate, butyl methacrylate, hydroxyethyl acrylate, hydroxypropyl acrylate and iso-bornyl acrylate, wherein the two-functional group material includes at least one of di-ethylene glycol dimethacrylate and 1,6-hexanediol diacrylate, wherein the three-functional group material includes pentaerythritol triacrylate, and wherein the cured photocurable organic material layer has a hardness with a range of 4 vickers hardness (H) to 6 vickers hardness (H).