Since the birth of the world's first semiconductor light-emitting diode in the 1960s, LED lighting has been known as the light of hope in the history of human lighting due to its long life, energy saving, rich colors, safety and environmental protection characteristics.

Light-emitting diode LED development history:

In 1907, Henry Joseph Round first observed electroluminescence in a piece of silicon carbide.

A 1936 report by George Destiau on the light emitted by zinc sulfide powder. With the application and widespread understanding of electrical currents, the term "electroluminescence" eventually emerged.

In 1955, Rubin Braunstein of the Radio Corporation of America discovered the infrared radiation effect of gallium arsenide (GaAs) and other semiconductor alloys

In 1962, the joint laboratory of GE, Monsanto, and IBM developed a gallium arsenide phosphide (GaAsP) semiconductor compound that emits 655nm red light, and light-emitting diodes have entered the commercial development process since then.

In 1965, Monsanto and Hewlett-Packard introduced commercial red LEDs made of GaAsP materials, which at the time had an efficiency of about 0.1 lumens per watt.

T8 Aluminum-plastic integration

In 1968, a breakthrough was made in the research and development of LED lamps. The efficiency of GaAsP devices reached 1 lumen/watt using a nitrogen doping process, and LED energy-saving lamps were able to emit red, orange and yellow light.

In 1971, GaP green chip LEDs with the same efficiency were introduced, and LEDs began to be widely used in digital and text display technology application areas.

A technological breakthrough in the early 1980s was the development of AlGaAs LEDs that emit red light at an efficiency of 10 lumens per watt. LED lights began to be used in outdoor information release and automotive high-mounted brake light (CHMSL) equipment.

In 1990, AlInGaP technology was developed to provide performance equivalent to the best red devices, which were more than 10 times better than the standard GaAsP devices at the time.

In 1994, Japanese scientist Shuji Nakamura developed the first blue LED on an InGaN (Indium Gallium Nitride) substrate, which started the research and development upsurge of GaN-based LED lamps. The emergence of blue light made white LEDs possible.

In the late 1990s, an LED lamp was developed that excites YAG phosphors to generate white light by blue light, but the color is uneven, the service life is short, and the price is high. With the continuous advancement of technology, the development of white LEDs in the 21st century has been very rapid. The luminous efficiency of white LED energy-saving lamps has increased faster and faster, greatly surpassing incandescent lamps and approaching fluorescent lamps. Further development has increased the luminous flux of commercial LED lamps by dozens of times. The once faintly luminous LED is heralding the dawn of a new era of LED lights.