leds:the light of the future

by:ILED     2019-11-27
LEDs (LEDs)
, A semiconductor that glows when overlapping [
Positive Polarity]electricity,x94[1]
Will soon take over the commercial and consumer sectors of the lighting industry.
With higher efficiency, longer service life and clean nature, the Led is the future of light, driving traditional incandescent lamps and fluorescent bulbs to extinction.
Only the production cost of led is higher, the existence of traditional bulbs can continue.
History when we look back on the history of traditional bulbs, the high cost of producing LEDs is not an insurmountable obstacle.
Before replacing candles, oil lamps and gas lamps as the main source of lighting, incandescent lamps lingered for about 70 years. [2]
In 1809, British chemist Humphrey Davy made the first crude incandescent lamp with two charcoal strips, but it was still impractical.
Later, when Warren Dela Street created the first real incandescent lamp in 1820, it used platinum wire glow, which was too expensive for commercial use.
It was not until 1879 that Thomas Edison used charring wire in a vacuum to make incandescent lamps that became practical and affordable to consumers.
Although the led was considered relatively new, its concept first appeared in 1907, when Henry Joseph Round used a piece of silica gel carbide (SiC)
A dim yellow light.
Subsequently, Bernhard Gooden and Robert wickhard pole conducted experiments in Germany in the late 1920 s, using phosphorus materials made from hydrogen sulfide (ZnS)[treated]with Copper (Cu)
Dim light. [3]
However, during this period, there was a major obstacle that many early LEDs could not work effectively at room temperature.
Instead, they need to be submerged in liquid nitrogen (N)
For the best performance.
This led to the use of arsenic-based aluminum in 1950s in the United Kingdom and the United States (GaAs)
As a substitute for zinc sulfide (ZnS)
And the generation of LED that produces invisible infrared light at room temperature.
These LEDs were immediately found to be used in photoelectric, sensing applications.
The first visible spectrum LED to produce red light was created by Jr. Nick holoniak in 1962(b. 1928)
Who used arsenic phosphate at GE (GaAsP)
Instead of arsenic (GaAs).
They are quickly used as indicator lights once they exist.
Soon, these red LEDs emit brighter light, even orange --
When aluminum phosphate (GaP)
Substrate was used.
By the 1970 s, Gallium Phoshide (GaP)
Itself and double phosphorus Gallium (GaP)
The matrix that produces red, green and yellow light is being used.
This ushered in the DPRK 【LED use in]
More practical applications such as calculators, digital watches, and test equipment, as these extended colors address the fact that the human eye is most responsive to yellowgreen light. x94[4]
However, the rapid growth of the LED industry did not start until 1980 seconds laterGaAIAs)
Develop and provide super bright led (
10 times brighter than the led used at the time)
The first is red, then yellow and green, which also requires less voltage to save energy. [5]
This led to the concept of the first led flashlight in 1984.
Then, while focusing on emerging laser diode technologies that maximize light output, the first ultra-broadband LEDs were made in early 1990 by using phospgalium aluminum phosphate (InGaAIP)
Led, partially created by toshiba LEDs, reflects 90% or more of the light produced, and in addition, different colors were found during the same period, including LEDs white sheets (
Although it has only recently produced a truetrue white light by using organic LED (OLED)
Cambridge Display Technology in the United StatesK. )
It can be produced by adjusting the size of the band gap when phospgalium aluminum phosphate (InGaAIP)
It was used largely because Shuji nak of Nichia Corporation developed the world\'s first blue LED in 1993. [6]
Today, the technology is used to produce LEDs that even emit exotic colors such as pink, purple, and water colors, as well as real super
The black glow of violet. [7]
A key milestone was reached in 1997, when the production of high-intensity bright LED became cost-effective (benefits)
More than the related cost of producing it.
With this milestone, new technologies may further reduce costs (
Improve lighting)
Introduction of quantum dots or micro crystals ([8]
Advantages the advantage of using led to provide unique light source lighting for each application is significant.
LEDs are hardly hot (wasted energy)
In fact, unlike incandescent lamps, it\'s cool for touch.
They are also more durable (
Installed in a hard shell, shock and shock resistance)
50 times longer than traditional incandescent lamps and fluorescent bulbs (
Some can take up to 10 years)
They use a larger proportion of electricity, saving consumers money. x94 [9]
According to US media reportsS.
S. Department of Energy said the broad application of led may cut U. S. Energy supply. S.
Lighting electricity 29% kWh [10]
Since their function and nature require less energy, reduce the amount of air conditioning needed to keep the area cool and comfortable.
The shape of the led also provides lighting advantages compared to conventional bulbs.
Unlike incandescent lamps and fluorescent bulbs, LEDs do not need to use an external reflector to collect and guide light.
In addition, the LEDs light up soon [ing]
The total brightness is about 0.
10 times faster than traditional bulbs. [11]
Led will not produce super
Unlike traditional bulbs, the purple output damages the fabric; they are light-
Weight, eco-friendly, can produce different colors (
Color filter is not used)
According to the amount of electricity provided to each primary color, make sure you do not waste power.
Massachusetts Institute of Technology (
Laboratory of nano-structure
Research is currently under way, which may result in the generation of LED display screens where color and strength (brightness)
Can be set electronically. x94[12]
With led occupying a larger share of the lighting market, they are currently used in a variety of equipment and applications, from traffic control equipment (e. g.
Traffic lights, including single signal devices that change color from green to yellow to red)
, Ade lights, danger signs, Information Display (e. g.
Times Square, New York, product and news board, scoreboard)
Mobile phone, TV, big screen for sports and other outdoor activities (e. g.
Miami Dolphinszone screen)
Calculator, digital clock, flashlight (
Includes 60 seconds manual winding provided 1-
One hour of light, no need to store new batteries for emergencies)
Christmas lights, airport runway lights, floating downlights and car applications (e. g.
The indicator lights, headlights and signal lights of some vehicles;
The driver of the new 2006 Ford Mustang can even change the color (
125 different varieties)of their x93LED-
Loading dashboard by using the \"mycolor\" feature [13]).
In fact, the automotive industry plans to replace all bulbs with LED by 2010, and is currently working to replace all traffic signals with LED devices.
At the same time, it is planned to eventually use led to illuminate the streets as well as most areas of the third world and beyond, as solar rechargeable batteries can power the led every night. [14]
In addition, telephillips electronic development remote
LED room lighting]while]Boeing Corp.
Plans to use the leds s inside the new 787 Dreamliner. x94[15]
With the promise of the led, one day they may provide lighting for the house and office, X-
Ray features in the medical field, power computer displays, and a variety of other devices and applications.
The possibilities are endless.
However, before led replaces traditional bulbs, designers and advocates of technology must overcome common barriers to mainstream market adoption: Industry-
Recognized standards must be established to reduce costs. x94[16]
At present, the cost is falling, and some companies are moving towards these industry standards (e. g.
Phillips Electronics is developing LED bulbs that can be screwed into existing lamp holders, while also developing lighting equipment.
The LED can be tightened by Com--
One of 70 LEDs that gives out \"warm white similar to the light emitted by an incandescent lamp \"[17]
Use only 3 watts of energy and another LED bulb, it actually changes the color when lit).
As more and more companies adopt, develop and produce LED technology, led will inevitably become the only source of lighting for the extinction of traditional incandescent lamps and fluorescent bulbs.
In short, led is the light of the future, benefiting not only consumers, but also industry and the planet.
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