Re: Panasonic LCD TV Viewing angle


"Dave Fawthrop" <invalid@xxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:qqqcr1171ch2ro4590o1s9qot053a3e6qo@xxxxxxxxxx
On Sat, 31 Dec 2005 11:23:49 +0000, Adrian C <email@xxxxxxxxxxxx>
wrote:

| VG wrote:
| > I am somewhat disappointed with the picture quality when viewed at an
angle
| > to the screen.
| > Is this normal, or is my set sub standard?
|
| Yep, sounds strange. I remember my LCD calculator suffering a limited
| viewing angle when the batteries started running flat. May be related or
| not so to be definate, get yourself down to a shop displaying the
| product (maybe not the place you bought yours!). From what you are
| describing I'd think it would be noticable instore if it was a "feature"
| or fault with yours.

>When looking at in store flat screen displays, I check carefully on
>the viewing angle. I have *never* found one with a wide enough angle
>for me. Maybe in a few years time things will change.

LCD displays will never be relieved of this viewing angle problem, it is
inherent in the technology itself.

The LCD display itself works by means of a polarizer in front of the screen
in order to make use of the realignment of the liquid crystal structure
which itself polarizes light at 90 degrees to the main screen polarizer. The
degree of cancellation will change with viewing angle, and this is what
causes the shifts in hue/contrast /brightness as you move yourself off
centre axis from the screen (side to side or top to bottom).

The manufacturers figures of 140, 160, and even some 170 degree viewing
angles are extremly exagerated IMHO, and in reality may be limited to +/- 20
degrees off axis before you get a noticable degradation.

Some of the larger (42" +) LCD displays are only good if you have a large
distance between you and the screen. If you sit say 2 metres or less away,
the viewing angle difference from centre to edge is so large that you will
*never* be able to get a picture with uniform characteristics across the
screen.

I agree with other posters - CRT technology, despite its age and
'uncoolness' is still THE best screen technology in terms of picture quality
and stability.

The only technology which can compete with CRT's and ultimatly replace it is
OLED technology (Google for it). Unfortunatly there are still lifetime
stability problems with this, and it may be 4 or 5 years until the
technology is advanced enough for commercial large screen production
(although Samsung have already produced a 42" prototype) and I believe LG
are already in an advanced stage of planning for large scale OLED display
production.

I am afraid LCD displays as far as TV is concerned is really an unsuitable
technology, and is just an excuse to turn over more of punters hard earned
cash in the never ending 'upgrade/ keep up with the Jones' cycle.

In 4 or 5 years time piles of them will end up down the council tip as
punters upgrade to the next latest and greatest.

Slurp (Happy New Year!)








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