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Laser Phosphor Display (LPD) television.

Californian company Prysm has unveiled a high definition television with a "laser phosphor display" based on their patented method of using lasers reflected off a bank of mirrors to excite pixels on the television screen in a similar way to cathode ray tubes.

Prysm’s vice president of panel development and manufacturing, Patrick Tan, pointed out the fact that its technology has almost no requirement for new components gives the company a great advantage. All components, including the phosphors, mirrors and lasers are widely available, which makes development time short and reduces the time before production can be ramped up.

Prysm says it is dedicated to what it calls “ecovative” technology that is eco-friendly throughout its manufacture. As well as greatly reduced power consumption, the TD1 does not contain toxic components, has no consumables, and generates little heat.

Prysm says its HDTV television will be competitive with LCD and plasma televisions within three to five years.

How it Works?

Tiny patterns of phosphors are layered on the inside surface of the glass (or polymer), and these emit red, green or blue light when excited by a soft UV laser, to produce brilliant, high quality images. Since the phosphors are extremely close to the surface no image filtering is needed. The display can also be modified to suit specific viewing needs by using special coatings or substrates.

The solid-state laser diodes (similar to those in Blu-ray players) are mounted behind the screen and point up at bank of tiny, rapidly moving mirrors, rather like those used in laser printers. The mirrors reflect the laser light across the screen to produce the necessary number of image lines and create the picture. The resultant images have no motion blur or flicker.

The processor managing the laser varies the light intensity and turns the laser on and off, which means that when the display is dark the lasers are turned off to further reduce power consumption and increase the lifespan of the display.

Src & Text: [physorg]

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