How a Semiconductor Chip Is Made (Exposure and Etching)
Print patterns with light, etch, and stack
0:56 · 720p · With AI narration and captions. This sample was made with the same system as this service.
Narration (full text)
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How a Chip Is Made
Semiconductor chips are made by printing circuits onto a silicon disc with light.
Add Film and Resist
First, a thin film is added to a silicon wafer, and then it is coated with resist, which reacts to light.
Expose with Light
In exposure, light shines through a mask with the circuit pattern, copying the pattern onto the resist.
Develop: Lit Areas Dissolve
When it is developed, the resist that was hit by light dissolves away.
Etch Away the Film
Etching removes the film where there is no resist, and then the remaining resist is removed.
Repeat to Stack Layers
This process is repeated many times, stacking up layers of patterns to build the circuit.
Cut Apart and Finish
Finally, the wafer is cut into chips, and each one is sealed in a package.
Print, Etch, Stack
Semiconductor chips are made by repeating the steps of printing with light and etching.
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