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Reapplying More Photo Resist

Intel Shows How A CPU Is Made
By , Kevin Parrish, Intel Corporation
Reapplying More Photo Resist

More photo resist (blue) is applied and then re-exposed to UV light. Exposed photo resist is then washed off again before the next step, which is called ion doping. This is the step where ion particles are exposed to the wafer, allowing the silicon to change its chemical properties in a way that allows the CPU to control the flow of electricity.

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