Let's go inside an Intel 4004 microprocessor to see an individual transistor
Jul 24, 2017 - 0:13
Radio and PodcastLive Radio & PodcastsTechnology
Exposed nitride is then etched away
Exposed nitride is then etched away - Making an Integrated Circuit
Related Episodes
Continue listening to more episodes from Making an Integrated Circuit.
To make this transistor, first oxide then nitride layers are grown
Jul 24, 2017 - 0:11
A shadow mask then exposes a photographic emulsion
Jul 24, 2017 - 0:12
Oxygen reacts with the Si to grow more oxide
Jul 24, 2017 - 0:12
By heating in silane, polycrystal Si is then grown
Jul 24, 2017 - 0:04
A stripe is exposed in a second photographic emulsion
Jul 24, 2017 - 0:10
Exposed polycrystal Si is etched away leaving the transistor gate
Jul 24, 2017 - 0:09
Phosphorus ions then penetrate thin oxide to create the source and drain
Jul 24, 2017 - 0:12