Patent ID: 6068316
Filing Date: 2000-05-30
Classification: H01L

Abstract:
A large diameter wafer conveying system comprising:a vacuum supplier;a valve unit for controlling a vacuum supplied from said vacuum supplier by switching said vacuum supplier ON or OFF; anda wafer holder for stably absorbing and holding a wafer by using said vacuum supplied from said vacuum supplier through said valve unit, said wafer holder comprisinga plurality of tweezers forming a fork-shaped configuration for simultaneously holding a plurality of wafers, anda tweezer block for fixing said plurality of tweezers, each of said plurality of tweezers being provided with a plurality of contacting portions at respective free ends thereof, each of said plurality of contacting portions being spaced from each other by a certain horizontal distance, and said fork-shaped configuration of each of said plurality of tweezers including at least three arms extending from said tweezer block.