Wait a minute… Let’s clarify a few things first. There are common similarities between what is called an “LCD monitor” and the newer “LED monitors.” There are also major differences which set them apart. In this article, we will touch on both so you can decide which monitor is best for you.
How Flat Screen Computer Monitors are Assembled:
All flat screen machine counselors, televisions, tablet PCs and notebook displays use a twisted-nematic/thin-film transistor (TN/TFT) active-pattern, liquid crystal shows. Liquid crystal display is anywhere the term “LCD” comes from. Both “LCD” and “LED” counselors use this type of technology. These examples are a marvelous technological advance compared to the old-fashioned CRT displays used in older monitors and televisions. If you have a spare 5 minutes, this interesting article about best monitors for Photo Editing explains the individual components of a flat panel monitor, and how one works:
The Difference is in the Backlight:
What makes LCD and LED proctors different is the type of backlight used. All flat panel displays have a backlight, usually at the base of the unit, which displays light everywhere the viewing surface to illuminate the screen for the user. Older flat panel directors use a raw-cathode fluorescent (CCFL) container to provide the backlight. A CCFL light is a sort of fluorescent cell, which implied the technology adopted to accommodate the backlighting in early-design flat mask displays. Often, when you observe a monitor shown as an “LCD counselor,” it is using the older CCFL backlighting technology.
Why Manufacturers Switched to LED Backlights:
The newer LED backlighting technology got its start in 2007, when Apple, Inc. announced that it would begin transitioning away from using CCFL tubes for backlighting in its displays, and instead use LED lights. The term “LED” means light-emitting diode, a technology that has taken the lighting industry by a storm since the dawn of the 21st Century. LED technology has been around since 1962, but new applications and advancements for this technology have blossomed in recent years. LEDs are rapidly replacing older lighting technologies in everything from light bulbs to flashlights. Now, LEDs are also being used for backlights in flat panel displays.
There were some reasons for switching to LEDs for backlighting:
- Helping the environment. CCFL tubes, like all fluorescent tubes, contain mercury vapor which is energized to create the lighting effect. The need for mercury is eliminated in LED backlit displays.
- Energy Savings. LED backlights to require significantly less electrical power—about 40% to 50% less than CCFL backlights require. They also produce less waste heat.
- Simplification of Design. Switching to LED backlighting also enabled simplification of a monitor’s design. Monitors with LED backlighting are slimmer and weigh less than CCFL backlit monitors, due to the elimination of the fluorescent tube and its associated 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 proctor is capable of acting. CCFL backlights can only be dimmed so much and are limited in the dark contrasts they can provide. LED backlighting can be dimmed or even shut-down to provide pure-dark contrasts. This provides for more realism in dark scenes; such as in night-shots in movies or dark rooms while 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 resolution LED monitors, the darker black levels enhance brightness for a superb picture at all color levels.
So, as you consider your new monitor purchase, you should look closely at specifications in determining which form is best for your distinct needs. Maybe your next monitor will be one of the new LED monitors!