liquid-crystal display (LCD) is a flat
panel display, electronic visual display, or video display that uses the light modulating
properties of liquid crystals. Liquid crystals do not emit light directly.
Friedrich reinitzer Discovered the chemical used in LCD screens.It was cholesteryl benzoate.Afterwards Otto Lehmann named this material as liquid crystal.
A liquid crystal cell consists of a thin layer (about 10 u m) of a liquid crystal sandwiched between two glass sheets with transparent electrodes deposited on their inside faces. With both glass sheets transparent, the cell is known as transmittive type cell. When one glass is transparent and the other has a reflective coating, the cell is called reflective type.
The LCD does not produce any illumination of its own. It, in fact, depends entirely on illumination falling on it from an external source for its visual effect
Types of LCD/Liquid Crystal
Displays.
Two types of display available
1.Dynamic scattering display
2. Field effect display
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