How Flat Screen Computer Monitors are Constructed
All flat screen computer monitors, televisions, tablet PCs, and notebook displays use twisted-nematic/skinny-film transistor, nimble-matrix, liquid crystal displays. The term “liquid crystal display” is where the acronym LCD comes from. Both LCD and LED monitors use this type of technology.
For more info LCD screen manufacturers.
The Difference is in the Backlight
What makes LCD and LED monitors swing is the type of backlight used. All flat panel displays have a backlight, usually at the base of the unit, which reflects light throughout the viewing surface to illuminate the screen for the user. Older flat panel monitors use a cool-cathode fluorescent (CCFL) tube to let the backlight. A CCFL light is a type of fluorescent tube, which was the technology adopted to have enough maintenance the backlighting in at the forefront-design flat screen displays. Often, as soon as you freshen a monitor advertised today as a “LCD monitor,” it is using the older CCFL backlighting technology.
Why Manufacturers Switched to LED Backlights
The newer LED backlighting technology got its begin in 2007, behind Apple, Inc. announced that it would put into bureau transitioning away from using CCFL tubes for backlighting in its displays, and on the other hand use LED lights. The term “LED” means “well-ventilated-emitting diode.” There were a number of reasons for switching to LEDs for backlighting:
Helping the environment. CCFL tubes, taking into consideration all fluorescent tubes, contain mercury vapor which is energized to make the lighting effect. The dependence for mercury is eliminated in LED backlit displays.
Energy Savings. LED backlights require significantly less electrical capacity-more or less 40% to 50% less than CCFL backlights require. They moreover fabricate less waste heat.
Simplification of Design. Switching to LED backlighting along with enabled simplification of a monitor’s design. Monitors as soon as LED backlighting are slimmer and weigh less than CCFL backlit monitors, due to deduction of the fluorescent tube and its joined ballast.
Using LED Backlighting Enabled Performance Gains
Dynamic Contrast Ratio is the ratio of the luminance of the brightest color (white) as compared to the darkest color (black) that a monitor is talented of producing. CCFL backlights can on your own be dimmed so much and are limited in the dark contrasts they can go together in the midst of. LED backlighting can be dimmed or even shut-all along to manage to pay for real-dark contrasts. This provides for more reality in dark scenes; such as in night-shots in movies or in dark rooms even though gaming. Whereas the Dynamic Contrast Ratio of a CCFL backlight might be 100,000:1, for an LED monitor it can be 30,000,000:1. With high unmodified LED monitors, the darker black levels optional appendage occurring brightness for a more superb portray at all color levels.
LED lighting has taken the world by storm; in everything from fresh bulbs, to flashlights, and now in backlighting in flat panel displays. Maybe your neighboring monitor will be one of the added LED monitors!