Patent ID: 6999152
Filing Date: 2006-02-14
Classification: G02F

Abstract:
1. A method of fabricating a liquid crystal display device having a thin film transistor with a gate electrode, a gate insulating film, an active layer, an ohmic contact layer, and source and drain electrodes on a transparent substrate, the liquid crystal display further includes a gate line connected to the gate electrode and a data line connected to the source electrode that define a pixel area, said method comprising the steps of: forming a passivation layer covering the thin film transistor and the data line on the transparent substrate and patterning the passivation layer to define a contact hole for exposing the drain electrode; forming a transparent conductive film being in contact with the drain electrode via the contact hole on the passivation layer; coating a negative-type photoresist on the transparent conductive film and forming an exposed area defining a pixel area at the remaining portion thereof other than a portion corresponding to the data line, the gate line and the thin film transistor area; developing the photoresist such that the unexposed area is removed, thereby forming a photoresist pattern; patterning the transparent conductive film using the photoresist pattern as a mask to form a pixel electrode in contact with the drain electrode via the contact hole; and removing the photoresist pattern, wherein the photoresist is coated into a thickness of 1.0 to 2.0 μm and is soft-baked at a temperature of 100° C. to 125° C., wherein the exposed area is formed by exposing the photoresist to a light passing through a transparent part of an exposure mask having an exposure part and said transparent part and then post exposure baking the exposed photoresist, and wherein said post exposure baking is conducted at a temperature of 125° C. to 145° C.