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
angle is the range of oblique angle which we can see the normal screen. Unlike LCD, the image quality doesn't change though it is seen from just beside.
6. Fast response speed
If we play moving images, the quality of the screen is determined by the response speed. OLED shows natural screen of the moving images which have the similar level with that of the television.
7. High color property
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
What is OLED?
(SM) OLED Small Molecule Organic Light Emitting Diode.
The original technology developed to exploit the light emitting property of
some organic chemicals. Has been the basis of most commercial products to
date.
What is Hybrid LED?
Hybrid LED compensate
the defect of OLED
Good color
Improved power efficiency
Low cost, large area
Flexibility
H