New Laser Displays Use 75% Less Power Than Today's Screens

LCDs, make way for LPDs. Xconomy reports on a California startup's new laser phosphor displays (LPDs) that use just 25 per cent of the electricity required by today's liquid-crystal displays (LCD) or LEDs.

LPD screens can supposedly come in any size or shape, including square tiles and long, thin ribbon bands. That would allow the lights of Times Square or Tokyo to spread across many more cities and towns. Casinos and stadiums would remain shiny beacons, but train stations, shopping centres, airports, financial exchanges and even churches could also join in the lighting blitz.

The company Prysm has remained fairly tight-lipped about LPD technology, but the basic idea comes from eliminating the expensive layer of transistors that help drive each pixel of an LCD screen in HDTVs, computer monitors or smart phones. Instead, LPDs use a laser that blinks on and off precisely as it sweeps across a pattern of phosphor stripes - not unlike older cathode ray tubes (CRTs) that use an electron beam to activate a field of electro-sensitive phosphors. And rather than the magnets used in CRTs, rotating "scanning mirrors" direct the highly efficient laser beam within an LPD screen.

A first generation of LPD screens may cost more than LCD or LED screens, but Prysm envisions savings from lower power usage, as well as the lack of lamps that could go bust and require replacement. The company also says that LPDs have higher resolution, don't suffer from motion blur, and can be seen from wider angles than the usual displays. Once LPD production has scaled up, costs may drop low enough for common usage within computers and smartphones.

Prysm first plans to target larger displays that can factor in savings from long-term operations. So keep your eyes peeled next time you go walking around the bright lights of a big city. [Xconomy]

Popular Science is your wormhole to the future. Reporting on what's new and what's next in science and technology, we deliver the future now.


Comments

    With that kind of power reduction it would be ideal for laptops and portable devices... assuming it can be made thin enough.

    does it have the refresh flickering problems of CRTs?

    does it, like CRTs, not have a native res?

    also, please stop calling LCD tvs with LED backlights LED tvs. soon all LCDs will have LED backlights, just call them LCD tvs like they are.

    if you took the LCD panel out of these 'LED tvs' they would not at all resemble the functionality of a TV.

      Amen to that but I think you are too late. Just like when they called TV's HD just because they had a HD tuner but not the HD resolution which then gave us Full HD which confuses consumers no end and makes it easy for salemen to push inferior crap on the masses. When (if) LED sets come out I guess they will be "Full" LED so you can end up with a Full LED Full HD TV!

        I reject that remark. I explain in simple terms to all my television customers the differences between the LCDs and plasmas available in my store. If I take advantage of my customers, then I'll get what's coming to me when they try return the thing. Don't think we're all just trying to push you into shelling out your hard earned cash, I'm just trying to do my job by getting you what you NEED.

        Also, I for one welcome our new LPD overlords.

Join the discussion!

Trending Stories Right Now