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Problem Reporting Guide
Problem Reporting Guide
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StatusPROBLEMUP
Issue Date and Description6/5/2023, Saw is inverting axis on cut steps causing potential sample breakage. 


Estimated Fix Date and Comment
Working with OEM to determine solution. 
Responding StaffMihailo Bradash




iLab Name: Accretech SS20
iLab Kiosk: BRK Packaging and Assembly Core
FIC: Shared
Owner: Mihailo Bradash
Location: BRK 1254
Maximum Wafer Size: 8"/200 mm


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Overview

General Description

The Accretech SS20 dicing saw is a precision sawing machine used in cutting semiconductor and MEMS wafers for separation of individual chips or devices. Pieces to be cut are mounted on wafer tape, which allows any size and shape of sample to be cut, up to 8 inches in diameter, and up to 1 millimeter thick. A supply of blades is on hand for most common substrates. Unusual substrates or non-standard cutting dimensions (i. e. extremely narrow kerf) may necessitate ordering special blades. There may be an extra cost to order special blades.

Specifications


Technology Overview 

 


Sample Requirements and Preparation

No special sample preparation is required.  Users have the option of applying a sacrificial layer of photoresist to the top surface of the sample prevent surface damage. 

Samples over 1 mm thick require special handling and specific blades.  Please consult Tim Miller or Mihailo Bradash before attempting to cut anything over 1 mm in thickness. 


Standard Operating Procedure

View file
nameAccretech SS20 SOP.docx
height250

 

Questions & Troubleshooting


Blade changes:

Under no conditions should a user try to replace a broken blade!  Please contact Tim Miller or Mihailo Bradash to have it replaced.

Process Library


Common issues:

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Below you will find some common issues, their probable causes and solutions.


Blade damage/break detected:

Causes

  1. Sample size in recipe was too small.
  2. Sample is too far off center axis of tool.
  3. Sample material is incompatible for the type of blade used on machine. 

Solution

  1. First contact Tim Miller or Mihailo Bradash to perform a blade change on the tool.
  2. After blade change has been performed confirm material is compatible, if material is correct increase sample size safety tolerance in Recipe. 


Alignment is out of tolerance:

Causes

  1. Channel 2 alignment is too far off 90deg, or was accidentally bumped during movement controls. 

Solution

  1. Select work vacuum button and ok the rejection of work. This will clear the current alignment data. 
  2. Redo manual alignment, leaving channel 2 alignment as 90deg. 


References