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Thinking of buying a big-screen TV? Cannot decide whether to get plasma or an LCD TV? Before you make the big decision, you should be aware that there is yet another option to consider: the 42" LED TV.
A 42" LED is, technically speaking, a new kind of LCD TV. It also has a liquid crystal display (LCD), but has a different type of lighting behind that display. Traditional LCD TVs use cold cathode fluorescent lights (CCFLs) for illumination, while LED TVs use light emitting diodes (LEDs). CCFLs are inferior to LEDs in terms of color saturation and contrast. For instance, they are incapable of producing deep blacks and richly saturated hues. LEDs do not chieu sang kien truc have this deficiency, and so a 42" TV is able to produce the superbly vivid picture that its plasma counterparts are so well known for. But the LED has the advantage of being more energy-efficient than a plasma TV.
There too are different kinds of 42" TVs. These depend on how the LEDs are configured to illuminate the screen. The configuration may be «full-array» or «edge-lit», and either may be with or without «local dimming».
«Full-array» means that the 42" LED TV has a whole set of LEDs arranged behind the entire back of the display panel. «Edge-lit» indicates that there are LEDs only on the edges of the display, but these LEDs can still illuminate the middle and other parts of the screen with the use of so-called «light-guides». An edge-lit LED TV has the advantage of being thinner, because it does not need as much space for the LEDs. A 42" LED, if edge-lit, may just be an inch thin, or even slimmer. This makes them very popular, as consumers appreciate the easier handling and mounting made possible with the thin build.
A 42" LED is, technically speaking, a new kind of LCD TV. It also has a liquid crystal display (LCD), but has a different type of lighting behind that display. Traditional LCD TVs use cold cathode fluorescent lights (CCFLs) for illumination, while LED TVs use light emitting diodes (LEDs). CCFLs are inferior to LEDs in terms of color saturation and contrast. For instance, they are incapable of producing deep blacks and richly saturated hues. LEDs do not chieu sang kien truc have this deficiency, and so a 42" TV is able to produce the superbly vivid picture that its plasma counterparts are so well known for. But the LED has the advantage of being more energy-efficient than a plasma TV.There too are different kinds of 42" TVs. These depend on how the LEDs are configured to illuminate the screen. The configuration may be «full-array» or «edge-lit», and either may be with or without «local dimming».
«Full-array» means that the 42" LED TV has a whole set of LEDs arranged behind the entire back of the display panel. «Edge-lit» indicates that there are LEDs only on the edges of the display, but these LEDs can still illuminate the middle and other parts of the screen with the use of so-called «light-guides». An edge-lit LED TV has the advantage of being thinner, because it does not need as much space for the LEDs. A 42" LED, if edge-lit, may just be an inch thin, or even slimmer. This makes them very popular, as consumers appreciate the easier handling and mounting made possible with the thin build.