NHK Science and Technical Research Laboratories is researching large, ultra-high-definition plasma displays, with the aim of enabling Super Hi-Vision TV in the home. The company has produced a prototype display that's 58 inches, with a pixel pitch of 0.33 mm, using guidelines from discharge and panel simulations.
"What we're exhibiting here is a home plasma display intended for Super Hi-Vision. For this, we've cut away one-fourth from the core of a current Super Hi-Vision display. The size is currently 58 inches. But if we make one that's 116 inches, so it has four times the area, we'll be able to achieve Super Hi-Vision full-pixel display."
To achieve Super Hi-Vision, pixels need to be made small. This requires technology for making small luminescent cells, and technology that can control the discharge of even small cells so that they're stable and bright. NHK has been doing discharge simulations to analyze the luminescence efficiency relative to the proportion of xenon gas in the cells. The company has also been doing panel simulations, for all-round analysis of the variation in brightness and the stability of picture display. By optimizing the gas conditions in this way, the display definition has been improved.
"In around 2005, before we developed this plasma display, we calculated the pixel pitch needed with 4,000 scanning lines for Super Hi-Vision in the 100-inch class, and found that the pitch was 0.3 mm. At that time, plasma displays had a pixel pitch of about 0.9 mm. So to get 0.3 mm, the area had to be reduced by a factor of 9 or 10. We set the goal of 0.3 mm in a 100-inch display. And this year, we've developed a plasma display that's 58 inches, with pixel pitch of 0.33 mm. If we can make the display four times bigger with this pitch, we'll be able to achieve full-pixel Super Hi-Vision display."
From now on, as well as working on ultra-high-definition panels in the 100-inch class for Super Hi-Vision, NHK will also develop technologies for increasing their drive speed and reducing their power consumption.
Related Links :
- YouTube
- 58" Ultra HD Plasma Display Prototype with 0.33 Pixel Pitch
- NHK OPEN HOUSE 2010
