An organic light emitting diode (OLED) is a solid state device like the LED but composed of several layers in which the emissive electroluminescent layer is a film of organic compounds which emit light in response to an electric current.
Function of each part
Cathode : injecting electron composed of metal
Anode : injecting hole composed of transparent ITO
Emissive polymer : reco
OLED
:Organic Light Emitting Diode
Organic means…
→Electroluminescent layer is
:a film of organic compound
(ex. C2, H2, O2, other polymers)
not semiconductor →used in LED
1.Self-luminescence
The biggest difference between LCD is that it is self-luminescence. It means that the diode can emit the light itself so it has the good visibility although there is ligh
100% 발광효율을 바꾸는 획기적인 방법
빛으로의 변환효율이 25%라는 것은 75%를 빛으로 쓰지 못하기 때문에 큰 손실이 아닐 수 없다. 그러나 만약 인광 여기상태로부터 열이 아닌 빛이 나온다면 전자가 전부 빛으로 변할 수 있게 된다. 이처럼 형광밖에 내지 못하는 유기물질(형광 물질)이 아니라 인광을
PMOLED
Disadvantage
Have light emission in limit time.
Spend a large amount of power.
Having large size is difficult.
Having high resolution is difficult.
Advantage
Cheap.(without TFT)
AMOLED
Advantage
Spend a small amount of power.
Have fast response time.
- It is possible to have large size.
- It is possible to have high resolution.
Disadvantage
- Expensive inves
-OLED(Organic Light Emitting Display)
: The thin film light-emitting diode which puts out the light which the layer is made from the organic chemical compound
-Advantages
Direct emission of light
Reduce thickness (no need back light))
Short reaction time
-Disadvantages
The cost of unit production is more expensive than
LCD.