Patent ID: 6846427

Claim:
A method for preventing an array substrate from being damaged due to an electrostatic force after a dry-etching process, comprising: providing a dry-etching apparatus having: a) a process chamber having a gas inlet, the gas inlet allowing a reactive gas into the process chamber; b) a first electrode arranged at a predetermined location in the process chamber; c) a second electrode in the chamber spaced apart from and opposite to the first electrode, having an insulating tape thereon a plurality of lift pins received in a plurality of holes, the insulating tape being arranged between the plurality of the lift pins, wherein said insulating tape is selected for having characteristics which do not lower a degree of vacuum, said insulating tape distancing the array substrate and the second electrode such that the distance reduces an electrostatic attraction between the second electrode and the array substrate prior to a lifting of the array substrate; and d) a power source for applying voltages to the first and second electrodes; arranging the array substrate on the second electrode; dry-etching the array substrate; and separating the array substrate from the second electrode using the lift pins.