Device and Conquer: Which TV is right for me?
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Device and Conquer: Which TV is right for me?4:25 /
LED, LCD and plasma: What's the difference, and which is the best?
They -- -- about the same from a distance don't think all those flat panel TVs. But how they generate the image as the majority of what you're paying for you may as well understand what's in there. Let's break it down and understand the types of TV this place. Okay first off LCD or liquid crystal display has long been the -- -- leader. Probably what you have -- most -- your only TV right now LCD TVs are known for good to very good picture. A wide range of sizes and prices for low cost portables -- big dollar 55 -- T. And they don't suffer from burning it. But they do dim and tend to color shift as they. They may have guessed by now these LCD TVs -- -- -- the same technology. As your flat panel computer monitor or the display on your laptop let's take a look inside. This thin panel you actually look at is actually -- -- of transistors that opening clothes like little shutters to allow light through. And in the process they go through red green and blue lenses also embedded in this piece of glass that light I'm talking about. Comes from this fluorescent panel behind it. And that creates two problems first of all this whole light panel -- traditional LCD is always on so when this picture wants to shows an area of black. All it can do is closed the transistors in that area and hope -- light leaks through. But it always does so -- best -- -- deep gray. That's -- we talk about we measure black level on a TV and black level is key to everything else look really good TV struggle when it. Secondly this light source back here is pretty bulky and that makes for a -- TV overall. Enter the LE DLC. For elimination they use a strip of LE days. Kind of like these right here and -- them behind or -- the picture. That means a thin case design front to back because the LED lights are so low profile. You also get very evens brightness and color throughout the TV because LEDs don't age oddly like fluorescent. And LEDs tend to use less. Energy than other TV types okay here's reconcile all that complicated there are two kinds of LED LCD TVs edge -- And local dimming. It is lit LED LCDs have their LEDs -- -- around the edges of the team as you might have asked. They can be particularly bad because the LED lighting is pushed out to the -- They may have some issues though with even -- of illumination at this point in their development. The local dimming type has a complete greater -- -- behind the picture screen these tend not to be the very -- but they're quite shallow. And they can really go a long way toward offering that holy Grail of LCD TVs and that is showing deep black levels because in this case -- the TVs to show black. -- your shots off the LED light. In that part of the picture. Finally there's plasma. Now unlike the LCD TVs we've been talking about there is no separate light source in the back behind the picture instead. Every pixel that you see is a little tube of glowing gas or asthma that -- light on its own. Unlike LCD the picture is bright and accurate from just about any viewing angle. I would plasma TV is really good it's still -- to be the best looking TV technology out there. Now these guys are not -- energy efficient or cool running. As LED LCDs can -- And surprising to a lot of folks -- are actually the best value in a larger sizes like 42 inch and above if you shop aggressively. Okay now 3-D. -- worry about it. All these types of TV displays can show 3-D if the rest of the television is 380 compatible the display type doesn't determine. But there's a lot here to digest but it's important to know what you're buying when something is this expensive. In this much of a pain that -- back of the store. What really matters is which of the TV should you get using any of these technologies. And for that you should head over to cnet's TV review section. For -- TV guru David Katzmaier keeps us on top of the best models. Regardless of displaced.