Saturday, March 31, 2012 8:02:40 AM
http://www.ask.com/wiki/Led
Until 1968, visible and infrared LEDs were extremely costly, on the order of US $200 per unit, and so had little practical use.[2] The Monsanto Company was the first organization to mass-produce visible LEDs, using gallium arsenide phosphide (GaAsP) in 1968 to produce red LEDs suitable for indicators.[2] Hewlett Packard (HP) introduced LEDs in 1968, initially using GaAsP supplied by Monsanto. The technology proved to have major uses for alphanumeric displays and was integrated into HP's early handheld calculators. In the 1970s commercially successful LED devices at less than five cents each were produced by Fairchild Optoelectronics. These devices employed compound semiconductor chips fabricated with the planar process invented by Dr. Jean Hoerni at Fairchild Semiconductor.[18] The combination of planar processing for chip fabrication and innovative packaging methods enabled the team at Fairchild led by optoelectronics pioneer Thomas Brandt to achieve the needed cost reductions. These methods continue to be used by LED producers.[19]
So it could be any one of the three:
1. The Monsanto Company-I would rule out as they are now primarily engaged in the agricultural pesticide business. http://www.monsanto.com/whoweare/pages/monsanto-history.aspx
2. Hewlett Packard- I think we are all familiar with their history.
http://www8.hp.com/us/en/hp-information/index.html
3. Fairchild Semiconductor-is a leader in the design and production of optoelectronics products
http://www.fairchildsemi.com/products/opto/
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