Forget 3D, here comes the QD TV
We’re talking of carrying the television screens in your backpacks. That may seem of a distant future, but the fact is, it’s not. This will be a reality within a year from now. British scientists at Nanoco, have developed a new ‘quantum dot technology’ that might revolutionise the television viewing to the next level. The quantum dot televisions can be rolled up and can be carried around in a pocket as these light emitting particles are 100,000 times smaller than the width of a human strand of hair and can be printed onto a thin plastic sheet. Quantum dots (QDs) are nano-scale crystals comprising various elements. The properties and performance of these unique crystals are determined by the size and composition of the QD. Nanoco Technologies has developed the ability to ‘engineer’ these properties in a unique manner, allowing adjustments to the performance and properties of the QD in a rapid and cost effective manner. This display technology differs from cathode ray tubes (CRTs), liquid crystal displays (LCDs), but it is similar to organic light-emitting diode (OLED) displays, in that light is supplied on demand, which enables new, more efficient displays, which is enabling mobile devices with longer battery lives.
Unlike inorganic semiconductor based LEDs, organic electroluminescent devices can be deposited over larger areas and on flexible or non-planar substrates. Hence, Quantum dots incorporate the best aspects of both organic light emitters and inorganic light emitters. With many promising advantages, QD LED or QLED is considered as a next generation display technology. QDs can be incorporated into a new generation of applications such as flat-panel TV screens, digital cameras, mobile phones, personal gaming equipment and PDAs.
Michael Edelman, chief executive of Nanoco, said,” We are working with some major Asian electronics companies. The first products we are expecting to come to market using quantum dots will be the next generation of flat-screen televisions.” “Something else we are looking at is reels of wallpaper or curtains made out of a material that has quantum dots printed on it. You can imagine displaying scenes of the sun rising over a beach as you wake up in the morning’, he added. It is but apparent due to this QD technology the thickness and power consumption of our regular TV’s and mobile phones could be drastically reduced. The idea of using quantum dot as a light source first developed in 1990s. Starting from early 2000, scientists started to realize the potential of developing quantum dot as the next generation light source and display technology.
Pros and Cons of Quantum Dot technology:
Color range: Nanocrystal displays should be able to yield a greater portion of the visible spectrum than current technologies. As shown in the diagram, QD Vision calculates as much as 30% more of the visible spectrum would be available using QDs in a QD-LED vs. a CRT TV.
Low power consumption: QD Vision estimates its nanocrystal displays could use 30 to 50% less electrical power than an LCD, in large part because nanocrystal displays don’t need a backlight.
Color accuracy: Nanocrystal displays would yield more purity in colors than other types of display technologies. Some display technologies, such as LCDs, can’t create a pure red, green, or blue for the display; instead, they need to add a few other colors to those three to display pure colors. Quantum dots, on the other hand, create pure red, green, and blue to create all other colors.
Brightness: 50~100 times brighter than CRT and LCD displays ~40,000 cd/m2
Added flexibility: QDs are soluble in both aqueous and non-aqueous solvents, which provides for printable and flexible displays of all sizes, including large area TVs
Improved lifetime: QDs are inorganic, which can give the potential for improved lifetimes when compared to alternative OLED technologies. However, since many parts of QD-LED are made of organic materials, further development is required to improve the functional lifetime.
Other advantages include better saturated green, manufacture ability on polymers, thin display, same material used to generate difference colors, and higher resolution.
Less saturated blue: Blue quantum dots are difficult to manufacture due to the timing control during the reaction. A blue quantum dot is just slightly above the minimum size, where red to green can be easily obtained. Sunlight contains roughly equal luminosities of red, green and blue. So in order to display an acceptable range of colors, a display needs to be capable to produce approximately equal luminosities of blue as of red and green (even though in order to achieve the same brightness as perceived by the human eyes, blue needs to be about 5 times more luminuous than green; have 5 times more power).
This QD technology is supposed to hit the shelves by the end of next year. Other than display applications, several companies are manufacturing QD-LED light bulbs; these promise greater energy efficiency and longer lifetime.
Ow man this is awesome news bro, thanks.
3d e use kortay parlam na r QD :O
The two are not related. 3D is based on existing LCD technology, while this is technology is something completely different.
Originally Posted by Z!mM3r
By coldfire7 in forum Software
Last Post: March 8th, 2009, 23:42
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