So, I've been wondering about getting a new monitor, (and my mom is obssesed with buying a LCD tv) but when checking the current models on sale these days, I notice there's no more LCD technology around; now it's all about LED monitors. So, the logic question that comes up is, what's the difference between these two?
The main difference between LCD and LED monitors involves the back-light of the monitors. While the technology of the displays of LCD’s and LED’s is basically the same, the LCD monitor uses cold cathode fluorescent lamps as back-lights as compared to the LED monitors that emit diodes. While this is not the only difference between the two, this is the main difference, and a major point of contention between those who prefer LCD technology and those who prefer LED technology.
What is the difference between back-lit led and LCD?
First of all LED's are not "back lit". An LED is a Light Emitting Diode, the key term here is "emitting". LED's emit light, and the newest generation can emit white light. LCD's (Liquid Crystal Displays) do not emit light, rather they block it. They produce a display by selectively blocking red, green or blue light. LCD displays always require a source of light behind them, thus they are "back lit". You may be referring to an LCD display that uses white LED's to provide the back light. These would use less current than the standard back light (which is usually a florescent tube) and they will probably last longer - LED's have a lifespan of dozens or even a hundred years.
I think I'm starting to get the idea. But, I need more information.
Many times when people are speaking about monitors they say “flat screen” or “flat panel” but in many cases they really do not understand what the difference between them is. Easiest way to separate flat screens from flat panel is to take a look at the image above. So, now when we know and understand that we have two major types of computer monitors: CRT and LCD, and when we understand what are flat screen display screens are in fact CRT while flat panel displays are LCDs and LEDs, we may proceed. First of all, let’s say something about CRT displays.
Flat Panel LCD computer monitors: Using and Implementing of liquid crystals began in 1990s. Increasing usage of LCD begun with TFT variation of liquid crystals that is nowadays also dominant technology that is used for manufacturing of LCD display screens. During that time only laptops had this type of display screens as, first of all, laptops were extremely expensive during that time and they needed to be thin as possible and to use small amount of energy. Of course, first LCD displays were very expensive but during time price declined. They become more and more popular as they are much lighter compared to CRT displays, use much less power and they are not that bulky and use considerably less space on the desk. Additionally, thanks to much less flickering, LCDs are much better than CRT as they reduce eye strain.
Flat PanelLED computer monitors: LED backlight displays are just the same as LCDs since whole technology behind both of them is same, main difference is in backlight that is used for illuminating LCD cell. LEDs for illumination use white diodes that are in computer monitors placed around the monitor rim and we call those Edge LED monitors. Of course, there are also RGB LEDs (red, green and blue diodes are placed behind the panel) and Full Array LEDs (diodes are placed behind the screen). When comparing Edge LED (that are most common in computer monitor production) and LCD displays, we may say that their performances are pretty much similar, although LEDs according to manufacturers have longer lifespan. Also, LEDs appear to be brighter, thinner and less weight. When talking about picture quality that pretty much differ from one model to another but we could say that LEDs in overall can produce a bit sharper and more vivid colors.
LED Vs LCD Monitor: Power Consumption
[quoteLED monitors are a very recently introduced technology and they are preferred over LCD monitors because of the amazingly rich picture quality and comfort of viewing. One more advantage that LED monitors have over LCD ones is the power consumption factor. LED monitors require a lot less power to operate than cold cathode fluorescent lamps. This property can be attributed to the inherently low energy needs of an LED. LED monitors are also a lot softer on the eyes than LCD monitors which make them popular choices for people who work for long hours on their desktop computers. Their power consumption is as much as 40% lesser than conventional LCD monitors. They are also a lot more eco-friendly because mercury is not used in their production.[/quote]
LED Vs LCD Monitor: Cost [quoteOne major factor that has been holding back LED technology from reaching the masses is the high price factor. The manufacturing of these devices is a lot costlier currently compared to LCD displays which have raised their overall price. To get an idea about the complete range of choice available to you while buying new computer monitors or TVs, refer to LCD vs LED vs plasma comparison.[/quote]
Sources of Information
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