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History of innovation November 16, 2021 Business, Chemistry and Materials, Computing, Firsts, Products, Seminal Innovations, Sensing and Devices, The 1970s

Blue light-emitting diode

Blue light-emitting diode – 1972

SRI created the world’s first blue light-emitting diode (LED) using gallium nitride in 1972. Although it was too feeble for practical use, this development pre-dated high-brightness blue LEDs by almost 20 years.

Blue LEDs formed the basis for the blue laser diodes used in today’s Blu-Ray DVD players.

BusinessChemistry and MaterialsComputingFirstsProductsSeminal InnovationsSensing and DevicesThe 1970s

Read our 75th anniversary blog feature

75 Years of Innovation: LED, first blue-light emitting diode

SRI 75 Blue light emitting diode Japan blog
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