Organic Light Emitting Diodes (OLEDs) are used to create digital display in many devices. What are the advantages of OLED displays over Liquid Crystal displays ?
- 1.OLED displays can be fabricated on flexible plastic substrates.
- 2.Roll-up displays embedded in clothing can be made using OLEDs.
- 3.Transparent displays are possible using OLEDs.
Select the correct answer using the code given below :
Show answer
Answer: C. Statement 1 is correct: OLEDs need no backlight and can be made on thin, flexible plastic. Statement 2 is correct: being thin and flexible, they can be used for roll-up displays, including in clothing. Statement 3 is correct: transparent OLED displays can be made. LCDs need a backlight and rigid layers, which limits all three. So 1, 2 and 3.
Watch for: Roll-up displays in clothing sound futuristic, so students drop statement 2.
Why the other options are wrong
- A. Wrong because roll-up displays (statement 2) are also possible.
- B. Wrong because statements 1 and 3 are also true.
- D. Wrong because all three statements are true.
Source to check: NCERT Class 12 Physics Part II, Chapter 14 'Semiconductor Electronics' (LEDs); US Department of Energy, Solid-State Lighting pages on OLED technology
Answer from the official UPSC key. Written and fact-checked by AI against the official key. Spotted a mistake? Report it.