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LED's

My InfoTech project on LED's and how they can be used around the globe.
by

Matthew Payne

on 14 March 2013

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Transcript of LED's

Types LED Lights History The Science Behind it LED stands for Light-Emitting-Diode Top 10 Companies that Make LED's What They're Used In Disadvantages and Misconceptions Inventors of LED's Latest Inventions Using LED's Other Fun Facts By: Matt Payne The first commercial LED light came out in 1989 with Volkswagen as one of the first consumers. Until 1968, LED bulbs ran $200 a piece! The Russian Oleg Vladirovich Losev reported the first LED light in 1927. The first
LED Bulb http://1.bp.blogspot.com/-ZCQ2k9AZa9c/TdWGhssb4SI/AAAAAAAAAPk/rFkXItZ-SZU/s1600/7w_plain_bulb.jpg Mini LED's can come in sizes from 2mm
to 8mm and are mostly used for indicators. There are also mid-range sized and high power LED's. One LED light bulb consists of a chip made
of semiconducting material with impurities
to create a p-n junction. So the electric current flows from the p side to the n side but not in the reverse way. Nichia is the #1 supplier of LED's
based out of Japan. It was founded in
1956 and all their major competitors are
obviously to the left. Samsung LED is the #2 biggest supplier of LED's in the world and is based out of South Korea. It was founded in 1938 as a trading company. Also you probably know, they create much more than just LED lights. Osram Opto Semiconductors is the #3 biggest supplier of LED lights in the world and based out of Germany. Founded in 1999, it is one of the newest LED makers. LED's are used in many things such as car headlights or just cars in general. Also they are used in TV's like if you have heard of LED backlit TV's or LED LCD TV's. Plus computers and computer monitors in the same kind of way as TV's. Flashlights are also a big consumer of LED lights. The CAPS lock light on your computer keyboard is also most likely an LED light. And finally, they are also used in indicators for flash drives. http://www.tubechop.com/watch/999575 One disadvantage of having LED lights
is that they cost more to buy than regular
incandescent lights. Also as they get older
or if the temperature changes, they can start to change color. They also must be supplied with the correct voltage and the electric current at a constant flow. Some of the common misconceptions
about LED lights is that they never fade,
they cost too much, they don't save money,
and that they're just a light bulb when they're actually a computer system. 1. Nick Holonyak - invented the first useful LED light in 1962 at the same time that he was working at General Electric Company in Syracuse, New York. 2. Oleg Losev - a Russian scientist and inventor. He invented the LED light in 1927 and wrote a journal entry describing it. Bibliography Organic LED Lights Organic LED lights are not that much
different than regular but there is a layer of
organic compound on the inside that emits
light from the current. OLED's are mainly used in TV's, computers, mobile phones, and handheld games. - LED's save 90% energy
- Lasts greater than 60,000 hours
- Average bulb cost is $14.99, Regular are $1
- Can save you $616.81 on electrical per year
- Cool to the touch
- Unbreakable
- If every house in the US replaced 1 standard bulb with an LED bulb it would save 24,184.4 million watts per day. http://www.ledlight.com/ https://docs.google.com/a/verona.k12.wi.us/document/d/1v3JFFEqR2diFlWGhiKDlWUW7AUwI1vanNkStQICri1Q/edit Thanks for
Watching!
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