When selecting a video display, you may find that “professional grade” or “commercial grade” models cost significantly more than televisions you can buy at the local high street electronic retail outlet. The primary difference is that professional grade displays are built to stay on 24/7 for weeks and months at a time without breaking down. They may also offer features such as video-wall processors, scheduling options, and lockable control panels not normally found in consumer-grade televisions. Professional grade also offer a 3 year onsite warranty and support as part of the package.
LCD
Liquid-crystal displays (LCDs) are a legacy choice for flat-panel video displays. These flat-panel displays consist of a liquid containing crystals sandwiched between filtering layers of glass or plastic. When electric current is passed through the material, the molecules of the liquid crystal twist so that they either reflect or transmit light from an external source, usually a cold cathode fluorescent lamp (CCFL). LCD displays have now largely migrated to newer LED technology. They can offer high brightness and are lighter making them easier to install and maintain. They are also the best choice for 24/7 applications because of their lower power consumption.
LED
LED displays are actually LCD TVs that use LEDs as their light source, instead of traditional CCFLs and have become the most popular display option. In fact, these displays are often referred to as LED LCDs. LED displays tend to be brighter and perform better than LCDs. They lose less energy, run cooler and weigh less. Choose from slim edge-lit displays with a thicker bezel, or backlit displays which are thicker with a thinner bezel, but can offer enhanced picture quality through local dimming – where the LEDs behind the screen can vary in power individually to give blacker blacks and whiter whites.
Plasma
Plasma flat-panel displays use small cells that contain electrically charged ionised gases, which fluoresce when electrically charged. Although plasma displays are waning in popularity and are available only in larger sizes— generally 42 inches and up—their deep blacks and high contrast ratios make them a good choice when implementing large displays that are intended to be eye-catching.
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