|
Here's why most people love
plasma TV screens:
1. You get movie theater
picture quality on a huge screen in the comfort of your
own home.
2. A good plasma has
stunning picture quality. It is sharp and has over 16
million colors available, so you can see amazingly life
like detail displayed in rich color with deep levels of
black.
3. The slim, widescreen
format is compatible with almost all home entertainment
equipment. Many plasma screens now come HDTV (High
Definition TV) ready.
Is a Plasma TV the
right choice for me?
Here's
some information to help you make your choice.
What's good about plasmas?:
- they look great with
bright, visually appealing picture quality
- excellent contrast
ratio and black levels for sharp images with deep
levels of black
- big sizes
- 160+ degree viewing
angle
- wall mountable
- currently usually
cheaper than an LCD TV of the same size
Here's the things you
should watch for:
- even with a plasma
images can be fuzzy - look at a variety of displays
- they are prone to
screen burn-in (this means if you leave the same
picture showing for a long period it gets burnt into
the screen for good and appears as a ghostly image
on the display)
- plasmas have a shorter
working life than traditional TVs - about 50,000
hours gas life
- they don't work as
well at high altitudes
Shopping Tips
Shop carefully because
picture quality, clarity, definition and sound quality
all vary quite considerably, even for plasma displays at
the same price. And don't forget to consider warranty
and back up support, because a plasma TV is a
significant purchase that should last you for 5 to 10
years (and relative to traditional CRT TVs the long-term
reliability is still to be proven).
How does a Plasma TV
work?
A plasma screen is
actually made up of thousands of cells (or pixels), each
of which is filled with a gas. When the gas is 'excited'
electrically it triggers a phosphor, which gives out
light.
In a way, each pixel is a
tiny version of the TV tube that is used in a
traditional TV set. It's this technology that allows the
plasma screen to be so thin that you can hang it on your
wall.
The number of gas cells or
pixels defines the resolution of the screen (i.e. how
much detail it can display). Clearly, as the screen
gets bigger, if the total number of pixels stays the
same, each pixel must be bigger, so the
"grain" of the display increases.
This is why High
Definition displays have more pixels - it allows them
to show finer detail.
|