What is overhead transport system?
What is overhead transport system?
Abstract: An overhead transport system includes a suspended railway and a motorized carrier configured to travel along the suspended railway.
What is OHT in semiconductor?
OHT (Overhead Hoist Transport) An automated transport system that travels on the overhead track and “directly” accesses the load port of the stocker or process equipment by the belt driven hoisting mechanism. “OHT” is the abbreviation for Overhead Hoist Transport.
What is Foup in semiconductor?
FOUP is an acronym for Front Opening Unified Pod or Front Opening Universal Pod. It is a specialised plastic enclosure designed to hold silicon wafers securely and safely in a controlled environment, and to allow the wafers to be transferred between machines for processing or measurement.
What is FOSB in semiconductor?
The wafer carrier box used in moving from a wafer manufacturer to a semiconductor manufacturer is called a Front Opening Shipping Box (FOSB), and a carrier box used in a semiconductor manufacturing process line is called a Front Opening Unified Pod (FOUP).
How many wafers are in a FOUP?
In most semiconductor companies wafers travel through 300-mm wafer fabs in FOUPs containing a maxi- mum of 25 wafers. Due to the increase in wafer size, a FOUP full of 300-mm wafers can weigh in excess of 40 pounds.
What is FOSB and FOUP?
What is overoverhead hoist transport?
Overhead Hoist Transport (OHT) devices carry materials automatically around the manufacturing facility. Self-driving cars sit at the intersection of artificial intelligence and the automobile industry, presenting an exciting new opportunity for transportation.
What does Samsung’s overhead hoist transport system offer the future?
In many aspects, the Overhead Hoist Transport system offers clues about the future offered by self-driving cars. It carries its passengers faster and more efficiently without drivers. By developing these autonomous vehicles, Samsung Electronics will continue to build and operate smarter semiconductor manufacturing facilities.
What are the passengers in an OHT vehicle called?
The OHT vehicle’s passengers are “wafers”. In semiconductor manufacturing, wafers are thin round slices of a mono-crystalline silicon ingot, which serve as major components in the fabrication of integrated circuits.
