Popularization of LED backlight notebook energy saving and environmental protection new trend

As everyone knows, the battery life is an important factor to measure the mobility of notebook computer. While improving battery life, nothing more than two ways: open source and throttling. You may first think of a large capacity battery, but this means that the increase in weight, sacrificing mobility. Therefore, a more positive way is to reduce the power consumption of each part of the notebook computer. Data show that the LCD screen is only about 30% of the total energy consumption of notebook computers. The Toshiba Libretto U100 in the use of LED backlight system, significantly reducing energy consumption. This kind of liquid crystal screen than the commonly used CCFT LCD screen power saving 48%, and does not contain harmful to the health, environmental hazards of heavy metal mercury. The adoption of LED technology, not only to make U100 less power consumption, better mobility, while its environmental advantages, but also very much in line with the current trend of consumption.

And LED and CCFT, what is the difference? We start from the laptop LCD display principle. CCFT is not perfect as we all know, the reason why the eyes can see the colorful world, because the light source at work. Similarly, the laptop with LCD to display color, whether it is the use of super twisted nematic (STN) or thin film transistor (TFT), you need a white backlight to illuminate. Because the white light spectrum contains all colors, and display filters will select the desired color from white light spectrum, finally form a vivid picture of our eyes to see the bright and colorful. At present it is possible to produce white light spectra of the main electroluminescence (EL) with cold cathode fluorescent tubes (CCFT), while the white LED as the rising star is considered to be the most valuable new light source in twenty-first Century. In our daily use of mobile phones, LED is widely used as a light source. The ordinary notebook LCD screen, mostly using CCFT as backlight source. CCFT brightness is very high, but the disadvantage is the need for high voltage AC drive, while containing harmful to the health of the environment mercury, but also for the power transformer rectifier group is relatively complex. Energy saving comfortable talking about LED, people thought quickly, all kinds of red notebook computer panel arranged on the green light, but seldom think of, even the laptop LCD screen, LED can also be used as a backlight source. LED full name for the Light-Emitting-Diode, the Chinese called the light-emitting diode, is a current to the semiconductor pn junction and light-emitting devices. The use of LED as a lighting source, mainly white. Toshiba's first Libretto U100 on the use of LED technology, can be regarded as a major innovation in the development process of notebook computer display technology. First of all, energy saving is the most significant advantage of LED technology, it can be compared to the ordinary incandescent Lantern Festival 60%-80% electric power, compared with fluorescent lamps will save 50%. It uses low-voltage power supply, it is more safe and reliable. U100 in the 7.2 inch LCD screen, using the independent control of the 32 LED mechanism to achieve back light system, can clearly and clearly display images and text, power is only 1.3W, and can be adjusted at will. The same size LCD screen requires CCFT (Cold Cathode Fluorescent Tube) cold cathode fluorescent tube, power consumption to reach more than 2.5W. Power consumption is also reduced directly to extend the battery life of U100, so that more convenient mobile freedom. Secondly, environmental protection is one of the unique charm of LED technology. Because LED does not use environmentally harmful elements - Mercury, and mercury in CCFT. As we all know, mercury pollution has become a global environmental problem. In January 31st this year, the European Commission issued a comprehensive plan to control mercury pollution, including the prohibition of foreign exports of mercury products. Mercury and its compounds can cause fatal damage to human health, and even lower doses of mercury can cause damage to the nervous system, according to the plan. Even if mercury flows from the land to the ocean, it will gradually be deposited on fish. When people eat excessive mercury content of fish, it will cause permanent damage to health. LED future LED despite a lot of advantages, but a short time it is difficult to popularize. On the one hand, LED brightness is not strong enough, is not suitable for large screen LCD screen, in addition, the cost of LED backlight system is higher than the cold cathode fluorescent tube. Toshiba U100 is the use of this display technology, it is entirely in the 20 anniversary of Toshiba laptop only to be applied. Thankfully, LED industry is similar to the microprocessor industry in "Moore's law", but the name of the Haitz law, the Agilent (LED field leader) former technical scientist named Haitz Roland. Its content is LED price every ten years will be one of the original 10, the performance is increased by a factor of 20. If this law can continue to be fulfilled, LED as a backlight system in the popularity of notebook computers, the future will not be far away. Toshiba recently launched a super mini notebook Libretto U100, for the first time the LED backlight system into the laptop, so as to achieve energy saving and environmental protection. As everyone knows, the battery life is an important factor to measure the mobility of notebook computer. While improving battery life, nothing more than two ways: open source and throttling. You may first think of a large capacity battery, but this means that the increase in weight, sacrificing mobility. Therefore, a more positive way is to reduce the power consumption of each part of the notebook computer. Data show that light is the LCD screen, will occupy about 30% of the overall energy consumption of notebook computer. The Toshiba Libretto U100 in the use of LED backlight system, a sharp drop