Patent ID: 7542125

Claim:
A method of cutting a liquid crystal display (LCD) unit cell from an LCD assembly panel, comprising: heating a cutting path formed on the LCD assembly panel in which the LCD unit cell is surrounded by the cutting path; applying a mixed coolant including an organic material mixed with water onto the heated cutting path so that the LCD assembly panel is partially cut to a predetermined depth along the cutting path; sucking the coolant to remove the applied coolant from the cutting path of the LCD assembly panel; and heating the cutting path from which the applied coolant is removed to fully cut the LCD assembly panel along the cutting path, wherein a surface tension of the mixed coolant is equal to or lower than about 52 dyn/cm to increase an adhering area between the mixed coolant and the LCD assembly panel, while a specific heat of the mixed coolant is equal to or higher than about 3.7 KJ/KgK and thermal conductivity of the mixed coolant is equal to or higher than about 0.4.