Liquid crystal displays use the latest full-color display technology, and the principle is simple and easy to understand. Basically, the concept of the entire liquid crystal display technology is to make use of the physical characteristics of the liquid crystal: when the current is switched on, the array is arranged in order, so that the light is easy to pass. When the power fails, the arrangement is confused and the light is prevented from passing through. To block or let light pass through a liquid crystal. In terms of technology, the LCD panel contains two very fine sodium free glass materials, called Substrates, with a layer of liquid crystal in the middle. As the beam passes through this layer of liquid crystal, the liquid crystal itself will line up and twist or stand irregularly, thereby obstructing or passing the beam smoothly.
Compared with the CRT display, LCD overcomes the disadvantages of the huge size, power consumption and flicker of CRT, but it also brings such problems as high cost, wide viewing angle and unsatisfactory color display. But technically, the advantages of LCD are still obvious, and the following aspects are shown:
1. smaller and lighter
The traditional CRT display technology due to tube imaging using imaging, need inside the vacuum tube, then in the end with the electron gun, the length of more than 30 cm, the display volume is certainly more. Such as a liquid crystal display using liquid crystal material, and then use the corresponding imaging display, do not install the tube in the display, volume is smaller, like a 15 inch LCD BM-568 EMC, its size is only 19 inches CRT display the volume of 1/2 to 1/3, when placed with greater flexibility, and the small volume of course it also makes the weight is greatly reduced.
2., the relative display area is greater
The traditional CRT display shows due to technical limitations, which is marked by the size than the screen display area to be small, a 15 inch CRT display, although the marked size is 15 inches, but its real visual range may be only 14.1 inches, and 17 inches display only the 15 to 16 inch display area. But because the surface like liquid crystal display principle, which is marked by the size of the display area is actual, such as the Samsung 15 inch LCD display area is completely 15 inches display area equivalent to a 17 inch CRT display, as both the price difference is not too much, of course is to buy Taiwan the LCD display is much more cost-effective.