Silicon Wafer Preparation for Device Research & Production

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University Silicon Wafer for Production

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Silicon Wafer to Microchip

After the steps stated on this page, the wafer are then fabricated into microchips. This second step is refered to Wafer Fabrication.

Silicon Wafer Preparation

There are several stages to make a silicon wafer. First the silicon is mined from beach sand! There are only a few beaches in the world where you can mine the sand.

Step Processes  
1.

Silicon Crystal Growth

 silicon-crystal-growth-cruciblePolysilicon chunks are poured into a crucible. There a Silicon seed crystal is grown into a respective diameter.
2.

Single Crystal Silicon Ingot

 Single Crystal Silicon Ingot The seed crystal is grown into a silicon ingot.
3.

Silicon Crystal Trimming and Diameter Grind

 Silicon Ingot Grinding The excess silicon left over from the ingot's grow is trimmed and grinded down.
4.

Silicon Flat Grinding

 Silicon Ingot Grinding Orienting flats are ground into the wafer. Each diameter has a standard semiconductor flat.
5.

Silicon Wafer Slicing

 Silicon ingot sliciingThe ingot is then sliced into thin wafers. The operator chooses the thicknesses. An ingot can be sliced in semiconductor standard thicknesses or custom sliced to meet customer needs including wafer chucks.
6

Silicon Edge Rounding

 Silicon Edge RoundingThe wafer flat sharp edges are rounded to provide strength and prevent chipping.
7.

Silicon Wafer Lapping

 Silicon Wafer Lapping
8.

Silicon Wafer Etching

 Silicon Wafer Etching
9

Silicon Wafer Polishing

 Silicon Wafer Polishing
10.

Silicon Wafer Inspection

 Silicon Wafer Inspection