Patent ID: 8416384

Claim:
An exposing apparatus for a fabricating process of a flat panel display device, comprising: a light source configured to emit a light; a beam edge cutter for improving an uniformity of the light from the light source and comprising: a first reflex mirror configured to receive the light from the light source; a first convex lens configured to receive the light from the first reflex mirror; a second convex lens configured to receive the light from the first convex lens; and a second reflex mirror configured to receive the light from the second convex lens; an exposing mask under the beam edge cutter, exposing mask being configured to receive the light from the beam edge cutter and comprising a pattern; a gas jetting unit between the beam edge cutter and the exposing mask and configured to jet a gas through a space between the beam edge cutter and the exposing mask; and a stage, where a substrate for the flat panel display device is disposed, under the exposing mask, wherein the light comprises a profile of a trapezoid shape before passing the beam edge cutter, and wherein edges of the light are cut by the beam edge cutter.