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CRT
CRT Rear Projection: These TVs use three cathode ray tubes (CRTs)—one red, one green, one blue—to create millions of colors. These “color guns” are located in the bottom of the cabinet and project an image onto a mirror, which then reflects that image onto the screen. These TVs have until very recently been the only option for anyone wanting a picture larger than 40”.
Selling points:
• Relatively thin. A 53” projection TV is roughly as deep as a 36” tube TV.
• Most projection TVs are a single cabinet and the perfect height sitting directly on the floor, eliminating the need for a stand.
• Relatively inexpensive, as most standard CRT projection TVs are much less expensive than their more exotic plasma, LCD, and DLP counterparts.
Keep in mind:
CRT TVs are not as shallow as their counterparts.
• Susceptible to “burn-in.” Any static (unmoving, constant) image that stays on a CRT-based TV can leave a permanent “ghost” image that can be very expensive to repair.
DLP
• Thin is in. A 50” DLP rear projection TV is just 14” deep!
• No burn-in. Without a CRT, DLP TVs are immune to this.
• Unlike CRT-based TVs, in which the three color guns can deteriorate at different rates causing color inaccuracies, DLP TVs use a single, user-replaceable bulb. Theoretically, these TVs will be able to produce a like-new picture for year and years.
Keep in mind:
• Price. These TVs cost more than a standard CRT big screen.
• While the replaceable bulbs have an estimated life of several years (depending on how much TV you watch), right now they cost a few hundred dollars.
LCD Rear Projection
Selling points:
• A 50” LCD rear projection TV is just 17” deep!
• Without a CRT, LCD projection TVs are immune to burn-in.
• Like DLP, LCD projection TVs use a single, user-replaceable bulb, that can produce a like-new picture for year and years.
Keep in mind:
• These TVs cost more than a standard CRT big screen.
• As with DLP TVs, replaceable bulbs can cost a few hundred dollars.
LCD Flat Panel
Liquid crystal display (LCD) screens are very thin and can even be hung on a wall. However, LCD TVs are usually smaller than plasma TVs. LCDs are most often used as computer monitors and in places where stylish but small TVs are called for, such as kitchens.
Selling points:
• These TVs are very thin. While usually too small to use as a main TV, smaller LCD TVs are perfect for kitchen counters and desktops—places where their low profile saves space.
Keep in mind:
• Price. You pay a premium for that wow factor.
• Picture quality is good, but not the very best.
• Unfortunately, you can’t just hang them on a wall like they do in the commercial. Cables for power, picture (the tuner is often a separate box) and antenna/cable/satellite must be installed in the wall.
Plasma (Flat Panel)
Selling points:
• These TVs are very light and thin. So light and thin, in fact, that you can hang them on a wall like a picture. Huge wow factor.
Keep in mind:
• As with LCD, you pay a premium for that wow factor.
• Picture quality is good, but not the very best.
• Again, they can’t just be hung on the wall without installing the proper cables.
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