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CamFPD plans for a new flat screen TV for the masses

Further to our last month item on flat screen TV, we found an interesting article on another new type of flat screen from Cambridge Flat Projection Displays.
CamFDP, a spin-off from Cambridge University's Department, is working on Wedge® displays, two dimensional flat panel displays that are a few millimeters thick. Large format screens, greater than 50 inches, can be easily and cost effectively fabricated. But it seems that money is no object in the flat screen business as even Sony cannot keep up with the demand for LCD TVs during this holiday season...


CamFPD plans for a new flat screen TV for the masses - digital camera and photography newsInnovative wedge screen offers bigger, cheaper displays

Soon everyone will be able to afford to watch television on a large screen.  Cambridge Flat Projection Displays (CamFPD) has developed a 20mm thick, 50” screen, which is low cost to produce.

The innovative ‘wedge screen' uses internal projection to create a large image on a thin screen.  The lack of electronic components will mean that it will cost a tiny fraction of a plasma or liquid crystal display.

Large screens displays are currently available either through back projection, which requires a thick screen; or as a plasma screen, which is expensive to make as it requires thousands of high voltage transistors that are difficult to keep working.

CamFPD overcomes both these issues.  It is a wedge shaped panel of Plexiglass, slightly thicker at the bottom than the top.  Light is projected internally within the wedge. As the light bounces off the sides of the wedge, the angle gets bigger through internal reflection until the critical angle is reached and the ray emerges as an image.

Dr Adrian Travis, developer of the Wedge Display, believes that the screen will revolutionise the audiovisual market.  ‘Although the cost of plasma screens has come down it is still a limiting factor for the uptake of associated digital technologies.  The Wedge screen is lightweight, portable and has many applications - it can even it can be used in reverse as a camera for video conferences!”

The new screen is also environmentally sound.  Legislation will soon make it compulsory to use specialists to dispose of cathode ray tubes, plasma and LCD displays.  The wedge screen is recyclable.

Dr Travis is currently in negotiations with manufacturers in the Far East to bring the screen to mass production. He comments: “There is no limit to the size of the screen, one day it would be possible to have a roll up screen that could be used in lecture theatres, or for home cinema, without the need for darkness.”
November 28, 2004
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