Q. Consider the following statements regarding the working of LCDs:
1.The display relies on a backlight and a layer of liquid crystals that act as shutters to control light passage.
2.When a voltage is applied (On state), the liquid crystals untwist and prevent light from passing through the second polarizer, creating a dark pixel.
3.LCD pixels emit their own light through organic diodes, eliminating the need for external illumination sources.
Which of the statements given above is/are correct?
Answer: B
Notes:
Explanation:
- Statements 1 and 2 are correct: These accurately describe the light-shutter mechanism using polarizers and liquid crystal molecules.
- Statement 3 is incorrect: LCDs are non-emissive. They cannot produce their own light and must rely on a backlight (typically LED).
