Panasonic Announces 3D TV With Built-in BD/HDD Recorder (page 2)

Jul 22, 2010
Shinya Saeki, Nikkei Electronics

Advantage of PDP stressed

For displaying 3D images, Panasonic used the frame sequential method, which combines a 120Hz-driven PDP and glasses with liquid crystal shutters. The same method was employed for the 3D Viera VT2, which the company released in April 2010 (See related article).

Though the frame sequential method is known to generate cross-talk, a phenomenon where images for the right and left eyes interfere with each other, Nishiguchi said, "Because the response speed of PDP is fast, cross-talk seldom occurs in the first place."

The PDP used for the RT2B series has the same specifications as the PDP equipped in the VT2 series. For the panel, the afterglow time of phosphors was shortened by improving the phosphor material and the method of controlling light emission. The contrast ratio of the panel is as high as 5,000,000:1.

"We realized a high capability of rendering black color and low cross-talk at high levels," Nishiguchi said. "It is possible to reduce cross-talk even with devices with slower response speeds such as LCDs. For example, there is a method of showing black color until the brightness reaches a point where cross-talk does not occur. With this method, however, it is not possible to draw dark parts, and the image loses contrast."