In Array lit configuration there are many LEDs mounted uniformly behind the display,it offers more uniform and brighter lighting & consumes more power.In Edge lit configuration,the LEDs are mounted to on side(typically the top)focused edge on into the diffuser,it offers a thinner package and consumes less power.
The emergence of LEDsbright enough to backlight large LCD displays promises to reshape power requirements in LCD. Recent announcements and technology demonstrations provide further evidence that increases in LED light output are making these solid-state lamps viable replacements for the cold cathode fluorescent lamps (CCFLs) currently used in large LCD displays.
The surface of the electrodes that are in contact with the LCD are treated so as to align the liquid crystal molecules in a particular direction.This treatment typically consists of a thin polymer layer that is unidirectionally rubbed using,for example, a cloth.The direction of the liquid crystal alignment is then defined by the direction of rubbing.Electrodes are made of a transparent conductor called Indium Tin Oxide (ITO).
LCD is an electro-optical amplitude modulator realized as a thin, flat display device made up of any number of color or monochrome pixels arrayed in front of a light source or reflector. It is often utilized in battery-powered electronic devices because it uses very small amounts of electric power.
LCD uses liquid crystal fluid as the active medium to create images. The LCD module is made up by numbers of color or monochrome pixels. We Categories it in following types:
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An inverter is an electrical or electro-mechanical device that converts direct current(DC)to alternating current(AC);the resulting AC can be at any required voltage & frequency with the use of appropriate transformers,switching, & control circuits.static inverters have no moving parts & are used in a wide range of applications,from small switching power supplies in computers,to large electric utility high-voltage direct current applications that transport bulk power.
Used with an overhead projector for a light source, an LCD panel can make an effective computer projection device, however LCD projectors have become a more economical choice."LCD panel" also refers to the smaller panels used internally in today's LCD video projectors.
