microLED display

Context: Apple has recently shifted to microLED display technology.

About microLED display:

• They are self-illuminating diodes.
• They are brighter and has better colour reproduction than Organic Light Emitting Diode (OLED) display technology.
• It is filled with small sapphires that have strong light.
• Sapphires shine on its own forever.
• The picture in it is generated by many individual light-emitting diodes.
• It is as small as cutting a centimetre of hair into 200 smaller piece
• Each microLEDs are semiconductors that receive electric signals.
• Combined microLEDs forms a module which are then combined to form screens.
• They are resolution-free, bezel-free, ratio-free, and size-free.
• It does not require backlighting or colour filters to produce red, green, and blue colours.

Source: The Hindu  

Previous Year Questions

Q.1) With reference to Web 3.0, consider the following statements:

1. Web 3.0 technology enables people to control their own data.
2. In Web 3.0 world, there can be blockchain based social networks.
3. Web 3.0 is operated by users collectively rather than a corporation

Which of the following given above are correct? (2022)

1. 1 and 2 only
2. 2 and 3 only
3. 1 and 3 only
4. 1, 2 and 3

Q.2) With reference to street lighting, how do sodium lamps differ from LED lamps? (2021)

1. Sodium lamps produce light at 360 degrees but it is not so in the case of LED lamps.
2. As street lights, sodium lamps have a longer life span than LED lamps.
3. The spectrum of visible light from sodium lamps is almost monochromatic while LED lamps offer significant colour advantages in street lighting.

Select the correct answer using the code given below.

1. 3 only
2. 2 only
3. 1 and 3 only
4. 1, 2 and 3