Creating Silicon Wafers
Computer chips begin as a material called silicon (hence, where "silicon valley" got its name). The material is crafted into thin, large "wafer-like" sheets. These sheets are created through a process where pure silicon crystals are pulled from crystalline material melt. The melt is then sliced into pieces creating the wafers. After they're sliced, the wafers are polished to protect their surface.
The wafers are coated with a special liquid called photoresist. When exposed to ultraviolet light, the material leaves an impression behind. This impression makes up the special circuits for each chip.
Using Ultraviolet Light
After the photoresist is added, a mask (similar to a stencil) is created with the circuit pattern for the chip. The mask is then placed above several lenses to shrink the image to the size of the chip. Finally, ultraviolet light is shined through the mask, hardening the exposed areas of photoresist.
Cleaning and Finishing
After the UV image is produced on the chip, any excess photoresist is removed with a series of chemicals. After the chip dries, it is tested and then placed into production.
Types of Computer Chips
Types of Computer Chips. Computer chips are made from a semiconducting material, most commonly silicon, which has the ability to transfer electricity...
How to Determine if a Car Key Has an Electronic Chip
Finding yourself locked out of your car is a terrible feeling. Matters are much worse when you only have the one key....
Why Is Silicon Used for Most Computer Chips?
Computer chips require precise regulation of voltage to manipulate data. According to the Cornell Center for Materials Research, silicon is ideal for...
How to Make Money at Home Using Your Computer
Millions of people make money from home using their computers. It is not necessary to buy a package or kit to start...
What Are Computer Keyboards Made Of?
Keyboards are computer input devices that are used to produce letters and numbers while typing. Each individual key on the keyboard has...