Differences

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--- manufacture [2012/08/13 07:01] – [Wafer testing] mcmaster
+++ manufacture [2025/08/04 21:23] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
 ====== Obtaining silicon ======
-Must be highly purified.  Most Si goes to the steel industry with <10% going to making wafers. [Wiki: Si]
+Most Si goes to the steel industry with <10% going to making wafers. [Wiki: Si]
+FIXME: what does Si ore look like?
 ====== Making ingots ======
-Melted in high temp furnace. A seed crystal is dropped in and forms a large crystal.  Chemicals are added to give p or n doping.
+Silicon must be highly purified for use in semiconductors.  Its melted in high temp furnace with several variations on how to purify it based on whether cost or purity (quality) is a higher concern.  Chemicals are added to give p or n doping.
+FIXME: steal a picture from Wiki or something
@@ Line 20: / Line 24: @@
 Programs like Cadence VLSI, Magic VLSI, and others are used to design a circuit and produce CAD files.
+FIXME: put a magic screenshot
 ====== Printing the photomask ======
@@ Line 43: / Line 48: @@
 FIXME: get a picture of a probe card (off of my phone...)
+FIXME: add probe scrube marks
 ====== Dicing ======