Big Secrets of CPU Manufacturing Process [Figure] (1)

How is a CPU and computer heart made?

Silicon Wafer manufactured by Silicon Ingot Slicing

1. A large Silicon Single Crystal or ingot (purity 99.999999999%) is cut by a diamond blade to make a thin silicon wafer.

2. The surface of the silicon wafer is polished to make a mirror.

Processing surfaces to manufacture Semiconductors

3. oxide films are generated on the wafer surface.

4. the masking film is coated on the wafer surface.

5. the masking film is exposed to the ultraviolet light through the pattern partition.

6. The area exposed to ultraviolet light is removed. (The exposed part becomes a substance that can be recognized by the color agent .)

7. Then the oxide film is removed with an alkali agent. Display the silicon surface.