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Led basic knowledge

Led basic knowledge. By do.light. Directory. Module 1. LED Introduction Module 2. LED trends Module 3. LED chip introduced Module 4. LED packaging Introduction Module 5. LED Basics. LED Introduction of Module1 . 1, LED definition 2, LED characteristics 3, light-emitting principle.

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Led basic knowledge

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  1. Led basic knowledge Bydo.light

  2. Directory • Module 1. LED IntroductionModule 2. LED trendsModule 3. LED chip introducedModule 4. LED packaging IntroductionModule 5. LED Basics

  3. LED Introduction of Module1 1, LED definition2, LED characteristics3, light-emitting principle

  4. What is LED LED Light Emitting Diode is taken from the abbreviation of three words, Chinese translated as "light emitting diode", the name suggests is a kind of light-emitting diodes can convert electrical energy into light energy of the electronic device has a diode characteristics.

  5. The characteristics of the LED light source Voltage: LED using low-power, single voltage between the 1.9-4V, than the use of high pressure More secure power supply.Performance: high luminous efficiency, current laboratory highest luminous efficiency has reached 161 lm / w, is Currently the highest luminous efficiency lighting products.Shock resistance: LED is solid state light source, because of its particularity, can not have other light products

  6. Compare shock resistance. • Stability: 100,000 hours, the light fades to the initial 70%Response time: LED lights nanosecond response time, is the response time of all light Fastest products.Environmental protection: no metallic mercury and other harmful substances. • Color: LED with fast rather narrow, the light color pure, non-variegated light, too can cover the entire         See the light of all the bands, and by R \ G \ B combined into any desired visible light.

  7. LED is colorful As the LED narrow bandwidth, high color purity, the LED light color than other colors much richer.    According to expert calculations, LED light source rich in color than the other 30%, so that it can more accurately reflect the authenticity of the object, of course, more popular with consumers of all ages!

  8. LED light-emitting principle The core part of the light emitting diode is a p-type semiconductor and n-type semiconductor chip formed in the p-type semiconductor and an n-type semiconductor between a transition layer, called the pn junction.

  9. LED light-emitting principle • In some semiconductor materials, PN junction, the injection of minority carrier and majority carrier recombination, when will the excess energy released in the form of light, which converts electrical energy directly into light energy. PN junction reverse voltage, minority carrier injection is difficult, it is not light.

  10. Assignment • Fine the led in your life, Describe its appearance and characteristics

  11. Reference • https://www.google.co.jp/search?output=search&sclient=psy-ab&q=filetype%3Appt+%22led+%E5%9F%BA%E7%A1%80%E5%9F%B9%E8%AE%AD%22&btnK • https://www.google.co.jp/search?um=1&ie=UTF-8&hl=ja&tbm=isch&source=og&sa=N&tab=wi&ei=rqk7UpeGG-LIiAfO5YCwAw&q=%22led%20%E5%9F%BA%E7%A1%80%E5%9F%B9%E8%AE%AD%22

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