are very similar in hardware, with exception of the source of light. Both use
liquid Crystal Display panel (millions individual LC window shops in a raster
arranged, gotten jammed between two thin windowpanes), which permits or lets to
block light through, in order to produce pictures. Each catch is with a colored
filter for all, but the red, blue and green parts hen LCD - and LED HDTV of the
light to remove that by it paired. Each catch - filter pair produces Sub pixels,
so much that it needs a large group, in order to produce individual pixel (a
tiny colored point on the screen). Despite these similarities there are some
differences, which affect the contrast and display characteristics of both kinds
of TV-devices: • LCD use CCFL (Cold Cathode fluorine cent Lamps) as source of
light. This at the back page of the screen are arranged. • LEDs use light
Emitting Diodes, those on three different ways arranged are - Edge lighting,
Full array - lighting and dynamic “local Dimming” lighting. • Into lateral
lighting the number of the diodes along the outside edges of the screen are
arranged. If river flows in the circuit, the light by the diodes are distributed
on the screen. • In the Full array lighting are rows of diodes behind the entire
surface of the screen is arranged. • Into dynamic lighting, the series of LED is
arranged behind the entire surface of the screen can be headed for separately,
in order to reach a “modulated backlight” light sample. • Since diodes are
comparatively smaller than fluorescent lamps, LED TV slimmer than LCD HDTV,
which permit it, for more free space. • LED TV is produces less warmth than LCD
televisions, because diodes a longer time to warm up than fluorescent lamps.
Image quality and energy efficiency LCD and LED - televisions are better
comparative for the older generation of the televisions (CRT and plasmas),
because they produce a better image quality and more energy efficiently. There
are however still clear differences between LCD and LED - televisions, if it
comes both image quality and energy efficiency. Here are some examples: • Use
LED HDTVs less river than LCD - televisions. , Fewer lights produce LCD HDTV use
fluorescent backlight compared with the older generation of the televisions (CRT
and plasma TV). Therefore, in order to produce a better picture, are necessary
efficient lamps. LED - televisions use several diodes, the one smaller quantity
of electricity use compared with fluorescent lamps. Indeed, LED televisions has
about 20 30% smaller current consumption than LCD - televisions. • LED -
televisions produce pictures with better dynamic contrast than LCD televisions,
because the diodes in an LED HDTV knows separately are headed for, so that for
light control. Very bad image quality had the first versions of LCD televisions
altogether, because the screen correctly do not produce fast moving pictures and
muddy color had detail. • LED HDTV offer a broader colour range (a subset of
colors), since the diodes in an LED TV are used colored lights as well as
produce, contrary to fluorescent lamps an LCD television, only produce can white
light. • Produce LED HDTV less environmental pollution than LCD - televisions.
This is due to the heat emission of the devices, if they are switched on. There
it a longer time for diodes to warm up than fluorescent lamps takes, is LED TV
is moreenergy-efficiently than LCD - television. LED TV is fundamental is newer
versions of LCD televisions. The change in the use of the backlight was made, in
order the problems, the older versions of the LCD technology confronted to
answer.
