Wafer disk location monitoring system and tagged process carrier

Details Wafer disk location monitoring system and tagged process carrier Wafer disk location monitoring system and tagged process carrier

1989-05-03

1989-12-19

Pitts, Harold I.

Registers

Systems controlled by data bearing records

Operations analysis

235380, G06F 1546

Patent

active

048884731

ABSTRACT:
A method and system for monitoring the process of a plurality of batches or semiconductor wafers or memory disks through a series of process operations and process carriers for use therein. Each batch is placed in a carrier in which it is transported to the locations where the processing operations are performed. Each carrier is provided with a transponder tag coded to be responsive to within reading range of a reader unit which transmits a radio frequency signal to the transponder tag and reads and decodes a phase modulated signal returned by the transponder tag to uniquely identify the carrier that is positioned within the range of the reader unit. Further control apparatus receives information from the reader units to permit the monitoring process of semiconductor wafer or memory disk batches through multiple processing operations. The carriers are specially designed to protect the transponder tag from the effects of the harsh chemical environments to which the carriers and disks are normally exposed during processing operations. A separate encapsulated transponder tag is also provided for attachment to existing carriers, so that they may be tracked by this monitoring system.

REFERENCES:
patent: 4570058 (1986-02-01), Havassy

Affiliated with

Also associated with

Rating

Wafer disk location monitoring system and tagged process carrier does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Wafer disk location monitoring system and tagged process carrier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wafer disk location monitoring system and tagged process carrier will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1904170