Apparatus, system and method for cutting a crystal ingot
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United States of America Patent
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May 10, 2005
Grant Date -
May 6, 2004
app pub date -
Nov 6, 2002
filing date -
Nov 6, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The apparatus, system and method for cutting crystal ingot provide techniques for cutting an ingot into wafers with a wire cutting apparatus utilizing wire with a diameter of less than 0.18 mm, such as 0.14 mm. The wire cutting apparatus also includes multiple rollers about which the wire is wrapped, and nozzles for applying slurry to the wire. One of the rollers is located on one side of the crystal ingot, while another roller is located on the other side of the crystal ingot. At least one nozzle is disposed proximate the first and second rollers. The nozzles collectively disperse slurry at a rate in the range of 40 to 60 liters per minute, such as 50 liters per minute, and at a viscosity of 42 to 62 centipose, such as 52 centipose.
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