LCD Monitor World

Overview

Liquid Crystal Display or LCD is the technology behind the famous flat panel monitors. An LCD and CRT monitor is quite different since the LCD monitor weighs around 4.5 kg (10 pounds) and are typically 2.5 – 7.5 cm (1 – 3 inches) thick, while CRTs weigh 13 – 23 kg. (30 – 50 pounds) or more and have a bulky footprint with a depth of multiple inches.

LCD displays were once used on laptop computers before it made a big change to desktop monitors due to the technology improvement. An LCD monitor is comprised of five layers – a backlight, a sheet of polasized glass, a mask of coloured pixels, a layer of liquid crystal solution responsive to a wired grid of x, y coordinates, and a second polarized sheet of glass. By regulating the direction of crystals through explicit electrical charges of varying voltages and degrees, the crystals are considered small shutters which close and open in response to the incentive. Consequently, they make degrees of light which have gone through specific coloured pixels illuminate the screen which delivers a picture.

As LCD has been developed, the difference of techniques in creating colour occurs. Active-matrix or thin film transistor (TFT) technology generate images and colour as sharp as CRTs and is normally regarded as higher technologies than passive-matrix.

Contrast ratio is relevant to the comparative difference of the display – its darkest black values and its brightest white values. A higher contrast ratio produces more ‘real-world’ colours with less wash-out. Typically, 350: 1 is the standard providing for lower end models while most experts suggest 500:1 or better.

The viewing angle is really significant if many people will view the LCD monitor at the same time. There is a horizontal and vertical viewing angle specification, which is relevant to the degree you deviate from dead center before the pictures begin to wash out.