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What is LCD ?

24 Nov 2016 - LCD,tft lcd,touch screen,lcd display

 LCD Stands for "Liquid Crystal Display." LCDs are super-thin displays that are used in laptop computer screens and flat panel monitors. Smaller LCDs are used in handheld TVs, PDAs, and portable video game devices. The image on an LCD screen is created by sandwiching an electrically reactive substance between two electrodes. This color of this substance can be changed by increasing or reducing the electrical current. Since LCD screens are based on the principle of blocking light (rather than emitting it), they use up much less power than standard CRT (Cathode-Ray Tube) monitors.

An LCD monitor is a thin, light computer monitor that displays images through the use of a liquid crystal display. LCD screens are found in most laptop computers as well as in flat panel monitors, and have replaced traditional cathode ray tube (CRT) monitors for many users. CRTs once were preferred by many users for their superior color presentation; improvements in LCDs have made the difference less noticeable, but still important to graphics and photography professionals and serious amateurs.

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LCD monitors tend to be bright, with standard levels being more than adequate for everyday use. Brightness is measured in nits, units of one candela per square meter. Anywhere from 250 to 300 nits is standard, although people who play games may benefit from a brighter screen. If the nits are much higher, the user will likely end up adjusting the brightness down for regular use.