RFID Shelving iditger ARD Presentation: 11 Dec 2006 Guy Shtub Idit Gershoni.

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RFID Shelving www.cs.bgu.ac.il/~idit ger ARD Presentation: 11 Dec 2006 Guy Shtub Idit Gershoni
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Transcript of RFID Shelving iditger ARD Presentation: 11 Dec 2006 Guy Shtub Idit Gershoni.

Page 1: RFID Shelving iditger ARD Presentation: 11 Dec 2006 Guy Shtub Idit Gershoni.

RFID Shelving

www.cs.bgu.ac.il/~iditger

ARD Presentation:11 Dec 2006

Guy Shtub

Idit Gershoni

Page 2: RFID Shelving iditger ARD Presentation: 11 Dec 2006 Guy Shtub Idit Gershoni.

Introduction

A Fab is a factory where integrated circuits devices are manufactured.

Fab 18 - Intel’s 200mm Fab located in Kiryat Gat, Israel.

Page 3: RFID Shelving iditger ARD Presentation: 11 Dec 2006 Guy Shtub Idit Gershoni.

Some basic terms

Reticle - An optical template inserted into the manufacturing machines in the Lithography area.

RFID – Radio Frequency identification is a technology that uses devices attached to objects that transmit data to a (RFID) receiver. Alternative to bar coding. Its advantages include data capacity, read/write capability, and no line-of-sight requirements.

RFID chip

RFID chip Retic

l

eRetic

l

e

Lithography = The process of imprinting patterns

Page 4: RFID Shelving iditger ARD Presentation: 11 Dec 2006 Guy Shtub Idit Gershoni.

About the Fab and the Process

The production process for a single silicon wafer can take as much as a few months.

In some areas of the clean room, when a wafer is handled by a machine, a reticle is placed into the machine by a technician.

WaferWafer

Wafer = silicon slice (raw material)

Page 5: RFID Shelving iditger ARD Presentation: 11 Dec 2006 Guy Shtub Idit Gershoni.

Current Situation (1)Until recently, reticles were automatically stored and transported between the storage room and the working stations.

This ensured that the technician could not make an error in placing a different reticle then the one needed.

Such an error could infect many silicon wafers and as a result, cause severe financial damage to the company.

Page 6: RFID Shelving iditger ARD Presentation: 11 Dec 2006 Guy Shtub Idit Gershoni.

Current Situation (2)

“Railway” Tracks in the clean room’s

ceiling

A single lot

Being

transported

Lot = pack of 25 silicon wafers

Page 7: RFID Shelving iditger ARD Presentation: 11 Dec 2006 Guy Shtub Idit Gershoni.

The ProblemRecently Intel’s Fab18 started using a new manufacturing technology. For this technology new reticles are used.

The new reticles are larger and don’t fit in the old reticle storing and transportation system.

The technicians manually bring the reticles from the storage room to the work stations.

Human errors can occur. No control.

The project aims at preventing critical human errors from occurring.

Page 8: RFID Shelving iditger ARD Presentation: 11 Dec 2006 Guy Shtub Idit Gershoni.

The Solution RFID technology.

RFID tags that will be used: Passive RFID employee tag.

RFID tag that will be placed on the reticles.

The reticles will be stored in the 3rd party

shelves (Cabinet).

When a technician needs a reticle an order is made.

If the order is for a reticle that cannot be transferred through the automatic conveyer system our system will come into action.

Page 9: RFID Shelving iditger ARD Presentation: 11 Dec 2006 Guy Shtub Idit Gershoni.

The solution – step by stepA technician goes to storage room through the gate.

The gate contains an RFID reader that reads the technicians employee tag.

The system will identify the employee, link the data to the specific order, and indicate the correct POD (cell) where the reticle is placed.

When a reticle is taken or inserted into a POD, a placement sensor will recognize the change.

The reticles will be identified by using a RFID reader placed in each POD.

Page 10: RFID Shelving iditger ARD Presentation: 11 Dec 2006 Guy Shtub Idit Gershoni.

The solution – The Shelves

This is

How it

will look??

Page 11: RFID Shelving iditger ARD Presentation: 11 Dec 2006 Guy Shtub Idit Gershoni.

System Component Architecture

Built from scratch

Built from

scratch

3rd party hardware3rd party hardwar

e

Existing components

Page 12: RFID Shelving iditger ARD Presentation: 11 Dec 2006 Guy Shtub Idit Gershoni.

Functional Requirements(1)Reticle insertion to the Cabinet

Identifying a technician going to the reticle shelves. Allowing a technician to place a reticle in an empty space. Providing positive acknowledgement when the employee RFID is read. Read RFID tags from a reticle and send it to the PDAReticle information will be stored in the RTS and PAS.

Page 13: RFID Shelving iditger ARD Presentation: 11 Dec 2006 Guy Shtub Idit Gershoni.

Functional Requirements(2)Reticle removal from the Cabinet

Enabling a technician to order a certain reticle via the MTUI system.Verify that the reticle exists and currently stored inside the cabinet. Approve a technician’s request, and keeps the information in the RTS and PAS systems. Automatically recognize a technician passing through the gate. Cabinet beeps, blinking the LED in the shelf where the required reticle is stored. When the desired reticle is removed, the cabinet beeps again. Information regarding the specific reticle that was removed and the employee will be sent to the PDA and from there to the Control System. This information will be stored in the RTS and PAS databases.

Page 14: RFID Shelving iditger ARD Presentation: 11 Dec 2006 Guy Shtub Idit Gershoni.

Functional Requirements(3)Update reticle data in the system

The operator will be able to place a reticle in the association station RFID reader.

System will read the reticle’s RFID value and displays it to the operator.

The operator will be able to insert the required information into the PAS and RTS database, by using the PAS GUI.

Data will be written to the reticle RFID tag using the RFID writer.

Page 15: RFID Shelving iditger ARD Presentation: 11 Dec 2006 Guy Shtub Idit Gershoni.

Non Functional Requirements (1)Speed, Capacity & Throughput:

Technician identification process at the gate will take up to 2 seconds.

In 95% of the cases, the system will succeed in reading & identifying the employee passing through the gate. In the rest of the cases the system will indicate the identification failure.

The system will never falsely identify a technician.

If a technician removes a wrong reticle (different than the one ordered), the system will indicate wrong action within 2 seconds.

Only one person can pass through the gate at a time.

Page 16: RFID Shelving iditger ARD Presentation: 11 Dec 2006 Guy Shtub Idit Gershoni.

Non Functional Requirements (2) Safety & Security:

The system is an internal organization system.

The data does not need to be encrypted.

No cryptographic protocols will be used.

Availability:

– Being part of the manufacturing floor

the system will work around the clock.– The system will be available 98%

of the time.

Page 17: RFID Shelving iditger ARD Presentation: 11 Dec 2006 Guy Shtub Idit Gershoni.

Non Functional Requirements (3)

Usability:

Technician will use the system without any learning. The usage of the system is based on previous knowledge they posses.

The system operator will require about a day to learn how to operate the system.

Page 18: RFID Shelving iditger ARD Presentation: 11 Dec 2006 Guy Shtub Idit Gershoni.

Use Cases

Page 19: RFID Shelving iditger ARD Presentation: 11 Dec 2006 Guy Shtub Idit Gershoni.

Use Case 1 :

Name:

Reticle insertion to the Cabinet

Description:

Technician inserts a reticle into a POD of a shelf.

Post-Condition:

Reticle is identified & placed in a POD.

Page 20: RFID Shelving iditger ARD Presentation: 11 Dec 2006 Guy Shtub Idit Gershoni.

Use Case 1 :

Page 21: RFID Shelving iditger ARD Presentation: 11 Dec 2006 Guy Shtub Idit Gershoni.

Name:

Reticle removal from the Cabinet

Description:

Technician places an order for a reticle, goes to the shelves and gets

it.

Post-Condition:

Technician receives the desired reticle.

Use Case 2 :

Page 22: RFID Shelving iditger ARD Presentation: 11 Dec 2006 Guy Shtub Idit Gershoni.

Use Case 2 :

Page 23: RFID Shelving iditger ARD Presentation: 11 Dec 2006 Guy Shtub Idit Gershoni.

Name:

Update reticle data in the system

Description:

System Operator needs to define a new reticle in the system, or update data for existing reticle.

Post-Condition:

Reticle information is

updated.

Use Case 3 :

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Use Case 3 :

Page 25: RFID Shelving iditger ARD Presentation: 11 Dec 2006 Guy Shtub Idit Gershoni.

Risks

The success of the project depends (among other things) on 3rd Party company.

Page 26: RFID Shelving iditger ARD Presentation: 11 Dec 2006 Guy Shtub Idit Gershoni.

The End

Questions?

Page 27: RFID Shelving iditger ARD Presentation: 11 Dec 2006 Guy Shtub Idit Gershoni.

Thank You