subject: Amazing TV Technology - Liquid crystal display Vs LED Comparison with 3D Made Simple [print this page] Amazing TV Technology - Liquid crystal display Vs LED Comparison with 3D Made Simple
If you ever are not clued-up at the new TV technologies, it may also be overwhelming once trying to recognize, and choose from, all the choices out there. That is certainly best for what you may are trying to find in a TV? LCD, LED or 3D? If only the answer appeared to be so small! Unfortunately there are many products of each of the above said categories which actually means a long-winded comparison with many headings and sub-headings is sure to follow, but is that any more good in comparison with merely reading the specs (that you just hardly recognize) of different types you are interested in? Probably not! So let us try simplifying the comparison of these technologies for those of us who are not technology gurus and purely want numerous basic, solid advice in our journey in shopping for our best TV.
LCD TVs
LCD TVs are television sets that use Liquid Crystal Display technology to deliver images. This specific power efficient technology makes usage of liquid-crystal-filled cells which are placed between two sheets of glass and also a fluorescent backlight. The light-weight is shone onto thin film transistors that allow varying amounts of light-weight to pass during the liquid-crystal-filled cells. The liquid crystals are light-sensitive -- the more light they receive, the darker they become. Images are then displayed on the screen in monochrome or color by means of the color filters that receive the light intensity from the liquid crystals.
Pros:
. Thin, light available in huge sizes.
. Power efficient.
. Largely launched and available.
Cons:
. Lower contrast ratio -- less detail in dark areas of image.
LED TVs
LED TVs are technically a member of the LCD TV family. The monitor screen on a LED is a liquid crystal monitor the same as it is on any other LCD TV. The main difference between the two lies within the different backlighting techniques which may transform the photo quality features dramatically.
Where LCD TVs make use of some form of fluorescent lighting, LED TVs use Light Emitting Diodes to light the LCD panel. Just as there are different styles of fluorescent lights in traditional LCD TVs, you will find also different styles of LED backlighting. In numerous LED TVs there is a panel of LED lights behind the LCD panel. These LEDs are tri-colored and may be controlled in banks for an effect called "local dimming". This specific allows darker areas of the picture to have the backlighting dimmed behind them resulting in better contrast and black levels. Other LED TVs are functionally like traditional LCD TVs. In these TVs, the LED lights are surrounding the edge of the panel, allowing for an incredibly slim depth but without the ability to do local dimming.
Pros:
. Thin, light-weight available in large sizes.
. Higher contrast ratio -- favorable detail in picture.
. Tri-colored LEDs make for more realistic colours on screen.
. 'Edge-surrounding' LED TVs usage less energy than LCD TVs.
Cons:
. Expensive.
. 'Local-dimming' LED TVs use more energycompared to LCD TVs.
3D TVs
A 3D TV is a television set that employs techniques of 3D presentation. To identify how we see a 3D image, we must identify that our eyes are two separate lenses that register two differently-angled images of an object which might be sent to the brain, put together and made into one three-dimensional image in your mind. Making screens monitor 3D images is based on a same mechanism, but is divided into two categories -- Stereoscopic TVs (which actually take functional glasses to see 3D images) and Autostereoscopic TVs (which appear 3D without special add-ons).
Stereoscopic TVs take the make use of of either shutter or polarized glasses. Both kinds of glasses have the same key consumption -- they consumption the lenses to show each eye a different photo that are in that case processed by the brain to form one three-dimensional picture in your mind.
Autostereoscopic TVs rely on either lenticular lenses or parallax barrier. Lenticular lenses are small cylindrical plastic lenses which might be pasted on a transparent sheet, which is then stuck at the monitor surface of the LCD screen. These lenses magnify the images on the screen and once looking in the new cylindrical images, each eye sees different 2D images which might be combined by the brain to form one 3D picture. Parallax barrier is a pleasant grating of liquid crystal placed in front of the screen, with slits in it that correspond to certain columns of pixels of the thinfilm transistor screen. These deliberately placed slits direct light-weight from each picture a bit differently to each eye, again creating a 3D photo at the brain.
Pros:
. High refresh rates make for smooth, rich watching.
. Autostereoscopic TVs enable the parallax barrier to become turned on/off -- 3D and 2D viewing in one.
Cons:
. Image seems darker due to less light reaching eyes caused by glasses.
. Glasses are inconvenient and need away the simplicity of seeing TV.
. Autostereoscopic TVs have a watching 'sweet spot' as well as image is going to be distorted if the viewer sways from this spot.
. Noted health risks; especially in children, pregnant women as well as elderly.
So where does this leave you, the consumer, in your choice in investing in a television? This specific is just a start to the process. You will find obviously more aspects to considereven when comparing TV technologies such as; practical considerations, response time, refresh rate, longevity and cost of specialized products you are interested in. But not less than now you can begin on the informed expedition!
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