The critical factor here is your plan to get a Blu-Ray player. If you have firmed up on that, you must get a FullHD. All Blu-Ray output is 1920X1080 pixels which only a FullHD TV can handle.
If you are using a TV of size 42 inches or higher, and you play a 1080P signal, you will certainly see a marked difference. Pictures will be sharper, colors will be brighter, blacks will be darker, and contrasts will be very vivid. The best advantage will be smoother motion
Thanks Sandip. I will keep my educational background a secret.
Any how all these things about TV and resolution are not very difficult to understand. And we are all here to help you.
Sandip, I am out of station till 15th. As soon as I am back I shall contact Madbull and set up a time when we can watch his TV together using my 983.
A year ago I would have said go for Plasma. The biggest advantage Plasma offers is in high speed motion. If you take a set of pixels, since a Plasma screen is made up of charged gas and does not have a physical state, it can change shade and brightness. In particular, what is important is how fast does the pixel goes back to being complete black. This defines how the screen will handle contrasts and motion. In Plasmas, the gas goes back to its natural state that is black literally instantly.
In contrast, a LCD is made of small physical squares (called pixels) that are electronically modulated optical devices. These are monochrome pixels that are filled with liquid crystals. Compared to Plasmas that have a natural state, LCD have no natural state.
There is a light source at the back of the pixels. When you pass a electrical current through these pixels, the liquid crystals re-align themselves is various degrees (called twisting) allowing shades of light to pass through. The maximum current makes the crystals align themselves in such a way that there is no twisting at all, and
no light passes through. You get complete black color.
To get different shades of gray, you vary the voltage of the current that pass through the pixels.
The most important time for an LCD is what is called Response Time. This is the minimum time need by each pixel to change it's color and brightness. This is measured as BTB (Black to Black) and GTG (Gray To Gray). The issue is that since each pixel has a physical state, it does have a response time as compared to Plasmas that have literally nil response time. In LCDs you have to pass a current even to get black. In plasmas, you just allow the gas to go back to its natural state.
Imagine a scene where there is a black screen across which you are moving your hand. When part of your hand reaches a particular pixel, the color and brightness of that pixel changes to display your hand color and texture. As you hand moves
away from that pixel, it is supposed to become black instantly. In LCDs, the pixels do not do that. So fast movement will leave a ghostly trail of colors and brightness.
Now we are talking about very small periods of times - mostly in millisecond which is one millionth of second. But in fast motion this time is enough to make you see the blurs, particularly if the pixels are large in size (measured by resolution, or number of pixels per square inch) and you sit near the TV.
A couple of years ago, LCD's had response time in the 20s and 30ms. Current crop of LCD measure response time between 4 to 10 ms.
If you get an LCD that has a response time of 5ms or less, it will deliver good picture quality - very very close to a plasma. Of course the more the pixels the better it is. FullHD LCDs have over 2 million pixles, thus reducing blurring to a large extent.
Cheers