Monitors and televisions led. LED technology applied to LCD TV LED and OLED display
ByBefore introducing the topic of TV led to do a little for clarity on this electronic component: The term “LED” is an acronym that stands for Light Emitting Diode “, or” light emitting diode. ” The LEDs are made of a PN junction made of gallium arsenide or gallium phosphide, both materials that emit light when they are crossed by an electric current, the value of this current is between 10 and 30 mA.
Unlike the common bulbs, and its filament operates at very high temperatures and is characterized by considerable thermal inertia, the LEDs emit cold light, and can flash at very high frequencies, above Mhz, if one considers that the light emitted is directly proportional to current flowing through them, the LEDs are particularly suitable for the transmission of signals via modulation of light intensity. One of the many uses of the LED is such that the injectors signals in fiber-optic networks.
The most common LEDs emit red light, orange, yellow or green. In recent times it has been possible to produce an LED light indicated by the blue light, using gallium nitride (GaN), the availability of a blue LED light is very important as it allows you to create, along with red radiation Green, a source of white light.
The technology used on the new LED LCD televisions, serves to dramatically improve the quality and image definition will greatly increase the value of contrast, that an LCD TV with LED technology can be up to 2.000.000:1 Using LED technology creates a grid of backlit screen, with each light source is completely independent from the others, and can be turned on or off depending on the lighting requirements.
To view an image placed in the dark, the LED corresponding to the dark area, turn off completely, creating an incredible sense of depth, while those corresponding to the image stay on, projecting first floor, this means that the images on TV LCD LED is incredibly true, it’s like watching the world from a window! It is because the black, LED LCD screen, is really “black”, and the colors are 100 times brighter.
Another one of the many advantages of LED technology, is being able to build LCD TV with a minimum thickness, for example, there are LED LCD televisions, often less than 1 centimeter! For sure this technology will be a great success in the near future because, besides the great picture quality, one may also consider the fact that an LCD TV LED can consume up to 60% less electricity than a LCD TV normal. So because the hours that the average TV stays on in our homes, there will be some savings on electricity bill.
Another important application of LED technology will address the implementation of these OLED screens for PC monitors, OLED displays offer high performance at low power consumption, are very thin and would be ideal for laptop users is to replace the monitor is in the future replacement of the keyboard. Fortunately it seems that the first notebook OLED could come out within a year from now, up to the autumn of 2010.
In the portable screen is one of the main culprits in energy consumption: OLED display will slow down significantly while also reducing the thickness of the final push for a more aesthetic. And do not forget the weight less consistent.
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