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Red LED

1962 by Holonyak

Blue LED

1990s by Isamu Akasaki, Hiroshi Amano and Shuji Nakamura

The RGB LED

Mixing red, green, and blue sources to produce white light needs electronic circuits to control the blending of the colors. 

LED Iventioned 1960s by Holonyak 

That's the Revolution of Lighting

light-emitting diode (LED) is a semiconductor light source

 

The first commercial LEDs were commonly used as replacements for incandescent and neon indicator lamps then later in such appliances as calculators, TVs, radios, telephones, as well as watches Until 1968,

LEDs were extremely costly, in the order of US$200 per unit, and so had little practical use.
The Monsanto Company was the first organization to mass-produce visible LEDs, in 1968 to produce red LEDs suitable for indicators.
Hewlett-Packard (HP) introduced LEDs in 1968

ia with UL mark 

LED PARKING LOT LIGHT

LED VIDEO DISPLAY

OPEN SIGN

Gas Stations Canopy Lights

Parking Lot Lights

Father of LED Nick Holonyak

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                                                                            1960's has been invented LED lights

LED Is Light Emitting Diode.

1960's has been invented red LED light BY Holonyak!

Ledsign11.com is the No. 1 sales in the world

You might be considered who is the most Reliable LED industrial company in the world.

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