Lcd Television
By Mitchell Medford, Fri Dec 9th
LCD televisions are incredible, space-saving appliances. LCDspossess extremely thin, flat screens that can be mounted on astant or even hung on a wall in your family or entertainmentroom. In the case of the latter, hanging an LCD television on awall provides consumers with additional space in the room inwhich the television is placed; allowing much more space forfurniture and decorating. Furthermore, many LCD televisionsinclude the option to tilt and pivot their direction, allowingthe viewer to easily adjust the screen to their preferences.
LCD (liquid crystal display) projectors usually contain threeseparate LCD glass panels, one each for red, green, and bluecomponents of the image signal being fed into the projector. Aslight passes through the LCD panels, individual pixels ("pictureelements") can be opened to allow light to pass or closed toblock the light, as if each little pixel were fitted with aVenetian blind. This activity modulates the light and producesthe image that is projected onto the screen.
LCDs possess a number of advantages over Plasma televisions andstandard television sets. Such advantages pertain to their costeffectiveness, their space saving capabilities, and their imageproducing capabilities. In fact, in the future, the market islikely to see a rise in the sale of LCDs that surpasses theselling of both Plasma and standard television (SDTV) sets; sucha rise in the sale of LCDs will directly parallel the increasein technology.
One benefit of LCD is that it has historically delivered bettercolor saturation than you get from a DLP projector. That'sprimarily because in most single-chip DLP projectors, a clear(white) panel is included in the color wheel along with red,green, and blue in order to boost brightest or total lumenoutput. Though the image is brighter than it would otherwise be,this tends to reduce color saturation, making the DLP pictureappear not quite as rich and vibrant.
However, some of the DLP-based home theater products now havesix-segment color wheels that eliminate the white component.This contributes to a richer display of color. And even some ofthe newer high contrast DLP units that have a white segment inthe wheel are producing better color saturation than they usedto. Overall however, the best LCD projectors still have anoteworthy performance advantage in this area.
LCDs are more energy efficient as well. LCD projectors usuallyproduce significantly higher ANSI lumen outputs than do DLPswith the same wattage lamp. In the past year, DLP machines havegotten brighter and smaller--and there are now DLP projectorsrated at 2500 ANSI lumens, which is a comparatively recentdevelopment. Still, LCD competes extremely well when high lightoutput is required. All of the portable light cannons under 20lbs putting out 3500 to 5000 ANSI lumens are LCD projectors.
LCDs are more cost effective; this does not mean that they areless expensive than other television brands, but they are,however, money saving in the long run. Due to the fact that LCDsrequire less electricity to operate, the long term savings onelectricity can really add up. The reason that LCD televisionsare cost effective is because they do not require florescentlighting to work, and their flat shape produces less heat. Thus,if consumers are looking for a television that can save themmoney on their monthly electric bill, then LCD television isdefinitely the way to go.
LCD televisions are praised for their ability to produce sharp,crystal clear images. In fact, the crystal clear imageryproduced by LCDs can be attributed to the fact that theirscreens are literally comprised of crystals. Every crystaleither obstructs or allows light to pass through it and suchlighting produces the images seen by the viewer on the screen.Furthermore, because LCD screens are flat, there is veryunlikely that glare from other lights in the room will present aproblem.
Directly related to the clearer pictures, is the fact that LCDsproduce sharper images and consumers will experience far feweroccasions in which eye fatigue occurs. Many consumers enjoywatching television for several hours at a time; thus, theclearer images and less glare that are provided from the screensof LCDs can prove to be quite beneficial in alleviating eyefatigue.
Finally, for those individuals that are environmentallyconscious, LCDs offer less radiation emission as well as a lowerfrequency of electromagnetic field emissions. Electronicmagnetic fields have been scientifically associated with anumber of health risks, including cancer.
About the author:Mitchell Medford is a popular reviewer of consumer electronicsand technology and has served as a product developmentconsultant for several consumer electronics manufacturers. Visithis site or more information on
