Patent ID: 7679704

Claim:
A method of fabricating an in-plane switching mode liquid crystal display device, comprising: forming a gate line and a common line on a first substrate in a substantially horizontal direction a predetermined interval from each other; forming a data line on the first substrate in a direction substantially vertical to the gate line; forming a plurality of common electrodes substantially parallel to the data line and forming a plurality of pixel electrodes substantially parallel to the common electrodes, the common and pixel electrodes being arranged in an alternating pattern; forming a first alignment layer on the first substrate including the pixel electrode; performing a primary alignment treatment on the first alignment layer by rubbing to set a pre-tilt angle to about 1.5°˜5.0°; performing the secondary alignment treatment on an entire surface of the rubbed first alignment layer by applying a beam having a predetermined energy to set a same pre-tilt angle to about below 1° within the entire surface of the rubbed first alignment layer forming a color filter layer and a black matrix on a second substrate opposite the first substrate; forming a second alignment layer on the second substrate; performing the primary alignment treatment on the second alignment layer by the rubbing to set a pre-tilt angle to about 1.5°˜5.0°; performing the secondary alignment treatment on an entire surface of the rubbed second alignment layer by applying a beam having a predetermined energy to set a same pre-tilt angle to about below 1° within the entire surface of the rubbed second alignment layer; and forming a liquid crystal layer between the first and second substrates, wherein an alignment direction of the second alignment layer is set to be vertical to that of the first alignment layer, wherein the predetermined energy has a range of 0.5 to 2 J/cm 2 , wherein the beam is applied with the same energy on the entire surface of the rubbed first alignment layer, and wherein the beam is applied with the same energy on the entire surface of the rubbed second alignment layer.