The Problems With LCD TVs

Problems do affect all kinds of electronic gadgets right from cell phones to computers and TVs are no exception. One can say that all kinds of TVs throw up some problem or the other. There are two kinds of problems. To make it clear, sometimes the problem comes with the particular TV, by default. At times the TV throws up some problem. The problems that we are referring to are problems which fall under the first category. Again they are with specific reference to LCD TVs. Some LCD TV problems are discussed here under:

Ghosting

LCD TVs suffer from a phenomenon commonly referred to as 'ghosting' of images. Ghosting is a phenomenon which occurs when a pixel charge is retained on the viewing screen long after the image has gone. This gives rise to an image which is not the original image, but a 'ghost' of the original image, and hence the name. This phenomenon adversely affects viewing. This is a common LCD TV Problem.

Monitor size:

One LCD TV Problem that many face is due to monitor size. The maximum screen size that is possible under LCD technology is not more than 37 inches. This is partly due to bad transistors that distort picture quality. Consequently LCD TV monitors are always less than 37 inches.

Light blacks:

Due to a low contrast ratio coupled with backlit technology, LCD TVs are unable to produce deep blacks. This is because LCD display has a backlight which shines through the LCD panels. The panels allow or block light depending on what is required to produce an image or a color. Consequently, LCD TV's are unable to display pure "black". As far as LCD TVs are concerned, blacks at the maximum are very dark grey, never blacks. This is a problem LCD TV owners everywhere face.

Low pixel response time:

Another problem LCD TVs face is Low Pixel response time. 'Pixel response time' is the time taken for an individual color pixel to change color without blurring. In LCD TVs Pixel response time is slow. Consequently, fast moving objects on the screen exhibit a phenomenon called 'motion lag' which affects viewing.

Field of Vision:

The image on a good TV should be visible from any angle. If it so then the Field of Vision or view is wide enough. Ideally it should be around 150 to 160 degrees. LCD TVs have a problem on this count because when the image on an LCD TV is seen from a straight the image is good. However if you move away from the screen towards the left or to the right for some distance then the image becomes dull and at a particular angle nothing is visible. This is yet another LCD TV problem.

Pixel failure:

Though this is not a problem with all LCD TVs, this is one problem which affects some LCD TVs and hence mentioned here. 'Pixel failure' refers to the number of dead pixels available and noticeable on the screen at a given point of time. If the number of dead pixels is negligible, for instance, if it is one or two on a 20" TV (where the number of pixels is 300,000) then it is not noticeable. However if it is more then viewing is affected.

Display problems:

When it comes to display of programs, LCD TVs appear to have problems with respect to the some sources of the program. For instance, one problem LCD TVs have occurs while displaying programs fed from satellite and cable signals.

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