LCD: Liquid Cristal Display
LCD is a flat panel display or video display which uses the light modulating property of liquid crystals. It is used to display images use in many electronic devices available in the market today. LCDs display the arbitrary images and fixed images both. Arbitrary images are the general purpose computer display images and the fixed images are used in digital clocks and calculators etc. It is mostly used as a computer monitor and Television set in the household. It has replaced the old Cathode Rays Tubes (CRTs) and reduces the power consumption.
LCD screens are more energy efficient and it can be disposed more safely than CRT. It is always preferred to use in battery powered equipments due to its energy efficiency.
How it works
It works on the principle of color emission of liquid crystals. Liquid crystals were discovered in 1888. LCD is an electronically modulated optical device made up of segments filled with liquid crystals. LCDs used liquid crystals and polarized light to display the pictures. When the electric current applied to LCD TVs, there is a large bright light that shines towards the viewer. It creates millions of pixels that generates images.
LCDs provide better clarity and efficiency than CRTs. It is also more trendy and fashionable.
LCD is used in devices like:
- Digital clocks
- Gaming Devices
- Mobile Phones
- Smart Phones etc.