The Biggest Losers: JVC, Sharp, Hitachi and Pioneer Battle for the Super-Slimmest TV

JVC_Super_Slim_TVs_2.jpgUPDATE: LG just dropped a 1.7-inch thin LCD too. Loser! JVC announced it's "the world's thinnest LCD" at 1.5-inches thick (2.9-inches at the center). Pioneer has been bragging about its "world's thinnest plasma" coming in at a mere .35 inches (9mm!). Hitachi, meanwhile, has a .75-inch LCD and a 1.5-inch plasma on the way—the "centerpiece" of its showcase at CES. And we're expecting Sharp to move its .75-inch LCD out of the experimental phase and into production as well. Thin is in at CES this year. JVC supplies a good explanation on how they slimmed-down after the jump.jvcdia4.jpgThe slim design was made possible through the use of a new JVC-developed slim panel backlight unit and power supply substrate, or chassis. The new slim LCD panel backlight unit is 40 percent smaller in depth and bezel width compared to a conventional LCD backlight, measuring just 0.79 inches (20mm) deep and 0.51 inches (13mm) wide. In addition, the unit weighs only 26.4 lbs (12kg) and consumes a mere 145W (see diagram 1).

jvcdia3.jpgEfforts to reduce the depth of an LCD panel backlight result in uneven hot spots appearing on the LCD screen surfaces because CCFL light sources are brought closer to the liquid crystal panel (see diagram 2). To overcome this problem, either light-diffusing plates are applied or more CCFL tubes are used. But the former approach can result in lower brightness, while the latter approach can be costly and increases power consumption.

jvcdia2.jpgJVC's display engineering team succeeded in developing a new, slimmer backlight unit by optimizing the light-diffusing plates and light-reflection sheets, as well as improving its overall composition. This provided uniform light-diffusion at all the corners and edges without the addition of more CCFL tubes, while maintaining adequate luminance to ensure that the screen always remains bright (see diagrams 3 and 4).

jvcdia1.jpgJVC also developed a slimmer yet efficient power-supply substrate and employed a direct-mount configuration for it on the LCD panel backlight unit with a fan-less heat dissipation system to further reduce power consumption.

Both models will be VESA compliant for easy wall mounting, but JVC will also offer its own mounting solution - a wall mount designed to position the slim TV closer to the wall than does a standard mount.

The new JVC super-slim LT-42SL89 and LT-46SL89 will be available in early summer. Prices will be announced at that time.

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