CES - Plasma and LCD TVs getting thinner

Thinner flat panel displays were abuzz at this year's CES.

Ultra-thin flat panel displays were the highlight of this year's International Consumer Electronics Show, with many vendors showing thinner and sleeker high-definition TVs, giving users a peek of what LCD, plasma and OLED screens will look like in a few years.

Visitors thronged the booths of Sony, Samsung, Panasonic, Pioneer and Hitachi, where the companies were showing larger flat-panel TV prototypes with reduced thickness, ranging from 3 millimeters to 39 mm, depending on the screen size.

The thinnest perhaps was Sony's 11-inch organic light-emitting diode (OLED) TV, the XEL-1, which is 3mm thick. At $US2500, the panel is much thinner than LCDs, which start at 24mm in thickness. The XEL-1 went on sale in Japan in December and was just launched in the US. Sony also showed off a 27-inch prototype OLED TV at CES.

Samsung showed off a thin OLED display prototype with a 31-inch screen, the largest of its kind on display at CES. Measuring around 4mm thick, it is thinner than LCD panels and displayed vivid pictures than LCD TVs.

TVs based on OLED technology have a slender design thanks to the use of an organic material that emits its own light. LCD TVs require a backlight, which takes up space at the back of the panel.

OLED screens may display the best images, but its expected life is only three to four years, and production issues plague the screens. While Sony and Samsung are investing heavily in OLED technology, a Sharp executive said the company was exploring the technology, but it wouldn't consider the technology until its life span was at least 10 years.

Panasonic displayed a prototype of its thin 50-inch ultra-thin plasma TV, which the company said is lighter and more power efficient. The display is 24.7mm thick and weighs about 22kg, half the weight of current high-definition TV models in similar sizes, president of Panasonic AVC Networks, Toshihiro Sakamoto,, said during a keynote at the show.

The company also demonstrated a prototype of its massive 150-inch plasma display, which Panasonic said was the largest flat-panel display in the world. It is based on the slim design model used by the 50-inch prototype.

It slimmed down the plasma TVs by using a thinner backlight unit, Sakamoto said.

Pioneer has minimised the significance of a backlight to deliver more vibrant colors on its 50-inch plasma display prototype shown at CES. However, the 9mm display wouldn't be bought to market this year, Pioneer said.

Dubbed "extreme contrast," the concept display stopped idle luminance in a TV, filling the screen with black levels that allowed the company's future plasma displays to offer a deeper spectrum of colors, executive vice president of marketing and product planning, Russ Johnston, saia during a CES press conference.

JVC showed the 42-inch LT-42SL89 and the 46-inch LT-46SL89 flat-panel LCD TVs, both of which are 39mm thick across most of the back of the pane and significantly thinner from its earlier models. Both models will hit the US market early in the northern summer with pricing to be announced at that time, JVC said.

Hitachi unveiled thinner LCD TVs in three sizes -- 32, 37 and 42-inches -- with 1.5-inch (38.1 mm) thickness. The name of the LCD TVs, 1.5, comes from the thickness. The product will be available in later this year and Hitachi did not provide pricing information for the products. Not only do slim TVs look cooler, they are more power efficient and lighter, which will makes them easier to carry and mount on a wall.

(Martyn Williams and Dan Nystedt of the IDG News Service contributed to this report.)

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Agam Shah

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