The document outlines the development of LED technology from its inception, highlighting key milestones and contributors. It details the discovery of electroluminescence and the advancements in LED from the first visible light LEDs to the creation of white LEDs, which revolutionized lighting. The forecast for 2020 predicted LEDs to dominate the lighting market with significant price reductions.

1. The first Jooby bulb was born this
year. Within 2 years the
technology developed and
became brighter, more durable
and efficient.
1907 It shines!
Henry Round is the first to
discover and to describe the
electroluminescence. He noticed
the yellow, green and orange glow
when running the current through
crystal of silicon carbide.
1923Losev’s Glow
Oleg Losev re-conducts the
Round’s experiment and studies
the nature of the phenomenon.
Later it was named as the
electroluminescence of a
semiconductor junction or
“Losev’s glow”
The first infrared LED
R. Biard and G. Pittman discover
and patent the IR LED
technology which is still in use.
1961
The Birthday of LED lamp
N. Holonyak creates a red led, the
first to be made of visible light
and becomes “The father of LED”
1962
The first blue LED
Elaborated by J. Pankov of RCA
company it was dim and
expensive but it is considered to
give a rise to blue LEDs mass
production.
1971
The great apprentice
of a great master
Holonyak’s ex-student G. Craford
creates the first yellow LED and
enhances red LED brightness.
1972
Bonus to effectiveness
T. P. Pearsall creates high
brightness LED to be used for
fiber optics and makes them a
part of global communication
network.
1976
Traffic is under LED’s control
R. Deeze invents the first LED
traffic light. Now his technology
is popular all over the world.
1989
LED revolution
LED becomes mobile
LED flashlights which are more
effective and long lasting than
analogs were invented this year.
Come together!
Citizen Electronics creates the
first LED module based on Chip-
On-Board technology. Lighting
appliances production becomes
even cheaper and easier.
Jooby’s year
The future of Light
By 2020 LED lamps are
forecasted to become the
prevailing lighting technology.
Their price will fall by 80%.
1993
Shuji Nakamura, Isamu Akasaki
and Hiroshi Amano create a bright
and a cheap blue light emitting
diode. This led to the birth of white
LEDs and LED displays and to their
mass production. The team
received a Nobel prize for their
development in 2014.
2001
2003
2014
2016...
History of LED