[elektro] DVB-T

["H.István"]

Köszi, de az eredeti helyén is el tudtam olvasni. :)
Viszont van ugyanott egy ilyen is: http://www.nanoid.co.uk/nanoledlights.html
*
"*Nano LED Lights

An easily manufactured nanotech coating is expected to make LED lights brighter and warmer.
The company Nanosys has developed the process in which a phospor material developed from nanomaterials is layered over standard blue LEDs (the most energy-efficient color) to create a spectrum of colors that are warmer and more vivid. The strength of the concept is that it utilises existing technology, making it easy for existing manufacturers to adopt the system without having to dramatically change their manufacturing process.
It is hoped that Nanosys' material could improve laptop and HDTV displays with better, brighter screens, at the same time, without increasing energy consumption."

H.István


2011.12.21. 10:59 keltezéssel, Szali Sandor írta:
> "H.István" wrote:
>> Hmm, eszerint meg semmi köze a nano LED-eknek a QLED-ekhez...
>> http://www.nanoid.co.uk/nanoledlighting.html
>>
> szepen leirja mi is ez a nanoLED
>
> Nano technology developments are quickly leading to LED lights as bright as
> ordinary bulbs.
> LEDs are very energy-efficient and 70% of the energy is converted to light,
> however just 20% of that light escapes. A high refractive index at the
> LED-air interface means the light is reflected straight back inside. Some
> LEDs are made from gallium nitride, perhaps the most optically-awkward
> semiconductor material of all.
> Some of this extra light can be extracted by making tiny holes all over the
> surface of the LED. At 200 nanometres (nm) in diameter, they are 400 times
> narrower than a human hair but only penetrate 100nm into the LED's surface.
> Spaced out at 300nm apart, 160 holes would fit across a hair's width.
> Although a single LED chip may be around one third of a square millimetre
> (0.3mm by 0.3mm), that's enough space for hundreds of thousands of holes.
> The process of creating these tiny holes can be expensive, however
> nanoengineers have found effective ways to imprint the holes into LEDs at a
> far greater speed, and at a much lower cost. Nanoimprint [lithography] seems
> to be the most suitable technology for this.
> An early practical use for these LED devices is likely to be backlights
> within LCD TVs, replacing cold cathode tubes and helping make thin TVs even
> thinner.
> LG Electronics LG LEX8 is the world's slimmest full LED 3D TV. At just
> 0.88cm thin (and a 1.25cm bezel) the LG LEX8 provides the sharpest 3D images
> on the market.
> The minimal design and high quality picture is achieved with LG's NANO
> Lighting Technology incorcorporating an extremely thin film printed with
> minuscule dots positioned in front of a full array of LEDs which disperse
> light more evenly and effectively across the screen, creating pictures that
> are clearer.
> The LEX8 is LG's first television using nano technology.
>
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