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- Path: sparky!uunet!news.mentorg.com!sdl!sdl!usenet
- From: garyg@warren.mentorg.com (Gary Gendel)
- Newsgroups: comp.sys.ibm.pc.hardware
- Subject: Re: What's the deal? My chip says "SX-25";
- Date: 6 Jan 1993 15:09:26 GMT
- Organization: Mentor Graphics Corp. -- IC Group
- Lines: 15
- Distribution: world
- Message-ID: <1iesn6INNgrp@sdl.Warren.MENTORG.COM>
- References: <1993Jan6.142124.25566@bmers95.bnr.ca>
- Reply-To: garyg@warren.mentorg.com
- NNTP-Posting-Host: garyg.warren.mentorg.com
-
- In article 25566@bmers95.bnr.ca, khor@bnr.ca (Kyle Hor) writes:
-
- >There's a question I'd always wanted to ask. Why are wafers still made circular?
- >Since the dice are rectangular, wouldn't it save material growing the crystals
- >in a rectangular wafer?
-
- The process of growing high quality silicon hasn't changed much. Basically a seed
- of solid silicon is suspended in container of melted silicon. The seed is turned
- and raised VERY slowly, allowing the silicon to crystalize around the seed. This
- process produces very high quality crystalline structures, and by its nature
- produces a salami shaped product.
-
- Gary
-
-
-