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History of Silicon Wafers
used in the Semiconductor Industry

Silicon Ingot
End of a Silicon Ingot

Silicon (Si), a Semiconducting material made from silica, is the fundamental building block of modern integrated circuits, diodes, rectifiers, transistors, and solar cells.

The history of Silicon starts with it's discovery by Jöns Jacob Berzelius, a Swedish chemist, in 1824. For the next 130 years Silicon would not see any major industrial uses.


Fast forward to the late 1940's when companies including RCA & Western Electric are working on creating some of the very first transistors using a different semiconducting material other than Silicon, a material called Germanium (Ge).

However, by the early 1950's Silicon is found to be a much more efficient semiconducting material than Germanium, it raises the power output while lowering operating temperatures. In 1954, Silicon becomes born in the transistor industry when Texas Instruments produces the first commercial silicon transistor. Silicon becomes responsible for enabling the miniaturization of electronics!

Today, most transistors, integrated circuits, memory chips, and even Solar Cells, are still manufactured using Silicon in the form of wafer slices that are sawn from a grown silicon ingot.

Silicon is commercially processed by the reaction of high-purity silica with wood, charcoal, and coal, in an electrically heated arc furnace using carbon electrodes. At temperatures over 1,900 °C (3,450 °F), the carbon reduces the silica to silicon.





 Silicon Semiconductor Wafers - Size & Thickness

silicon wafer sizes
Silicon ingots and wafers in various sizes
The Industry standard Silicon wafer size is currently 300mm (12") in diameter.

A consortium of semiconductor companies including Intel, Samsung, Global Foundries, and TSMC are currently working on the development of the industry's next generation of wafers which will increase their size to 450mm (18") diameter and greatly increase future production yields.

Intel introduced the industry's first fully patterned 450mm wafer at the SEMI Industry Strategy Symposium in January 2013.

silicon ingot
A silicon ingot before being sliced into wafers


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Silicon Wafers continue to grow in size

Intel Corp. has been at the forefront of developing larger Silicon Wafers for use in manufacturing it's famous CPU's & computer chips.

They started development of their first memory chip products using the industry standard 2" wafers way back in 1969!

​The first microprocessor, the Intel 4004, was manufactured using 2" silicon wafers starting in 1971.





  Specifications of Silicon Wafers (1960 to Present):

YEAR                        DIAMETER                        WAFER THICKNESS
1960                      0.9"      (23mm)                                     ????
1960                      1"         (25mm)                                     ????
1963                      1.1"      (28mm)                                     ????
1969                      2"         (50 mm)                                    275 µm
1972                      3"         (75 mm)                                    375 µm
1976                      4"         (100 mm)                                  525 µm
1981                      5"         (120, 125 &130 mm)                 625 µm
1983                      6"         (150mm)                                    675 µm
1992                      8"         (200mm)                                    725 µm
2002                      12"       (300mm)                                    775 µm
????                      18"       (450 mm)                                 ~925 µm




intel silicon wafer sizes
History of Intel Silicon Wafer Sizes

Apple, IBM and Intel share Silicon Wafer Development

steve jobs apple ibm powerpc silicon wafer
Steve Jobs with a IBM PowerPC wafer (2003)
intel apple silicon wafer macworld
Apple's Steve Jobs and Intel's Paul Otellini with Intel Silicon wafer at MacWorld (2006)



How Silicon Wafers are Made
   -    Semiconductor Wafer Fabrication

semiconductor wafer fabrication
semiconductor wafer fabrication
 


 

Intel shows off the Semiconductor Industry's Future: The 450mm Silicon Wafer

Intel 450mm wafer
Intel's first developmental 450mm wafer (2013)

 


Some Memorabilia with Silicon Wafers



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Related:        Intel Journey Inside - CPU Chip & Silicon Wafer Kits



Silicon Wafers > Computer Memory > Magnetic Storage > MEMS Devices

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