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 :
- (a) 1 and 3 only
- (b) 2 only
- (c) 1, 2 and 3 ✓ UPSC's answer
- (d) None of the above statements is correct
Why the answer is (c)
• OLEDs emit light from thin organic layers themselves, needing no backlight, unlike LCDs.
• This lets them be printed on flexible plastic substrates (1), made into roll-up or wearable displays woven into clothing (2), and built as transparent displays (3) since the organic layers can be nearly clear when off.
• They also give deeper blacks, wider viewing angles and lower power for dark content.
• Hence 1, 2 and 3, option (c).
Why the other options are wrong
- (a) 1 and 3 only
- Roll-up wearable displays are also possible with OLEDs.
- (b) 2 only
- Flexible and transparent displays are also OLED advantages.
- (d) None of the above statements is correct
- All three are genuine OLED advantages.
Asked in the GS Paper I of the UPSC Civil Services Preliminary Examination 2017, held on 18 June 2017. Question and answer key: Union Public Service Commission. Explanation: UPSC Answer Check.