亚洲 欧美 图片 自拍 视频

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          LED-backlit TV accelerates into the mainstream era

          2010 is an important year for the development of large-size LED backlights. The advantages of LED backlights with ultra-thin, energy-saving and environmental protection, and high color quality have become a powerful driving force for the development of backlights. According to the forecast data of research institutions, in 2010, the global LED LCD TV sales will reach 32 million units, accounting for about 19% of all LCD TVs; in 2011, the use of LED backlight large-size panel shipment ratio will reach 56%, the traditional backlight panel Shipments will fall to 44%; by 2015, LED panel shipment penetration will reach 78%. In the Chinese flat-panel market, LED will surpass CCFL ordinary LCD TVs in the past two years.

          LED-backlit TV is entering the popular stage

          LED backlight will be the main theme of 2010, the first-line brand began to launch LED backlight models across the board;

          The LED backlight technology has been basically mature, and the room for improvement in the future is clear.

          Since the end of 2008, Sony, Sharp, and Samsung have begun to introduce LCD TV products using LED backlights in the Chinese market. With high-end and high-priced models as the stepping stone, they immediately attracted the attention of many high-definition enthusiasts.

          2009 is "a year for many manufacturers to test water", Samsung has become the main advocate of LED-backlit LCD TVs. Its 8000, 7000, 6000 series of ultra-thin LED models have received many consumptions due to their excellent shape and excellent performance. Favored. At the same time, including domestic brands such as Hisense, TCL, Skyworth, Konka, Changhong, Haier, as well as foreign brands such as Sharp, Toshiba and LG, LED backlight technology is also applied to high-end new products. This also confirms the industry's forecast in early 2009, by the end of 2009, about 3% of LCD TV products in China will use LED as a backlight.

          On February 6, 2010, CREE, a well-known LED chip manufacturer in the United States, announced that its white light high-power LED chip achieved breakthrough in light efficiency, reaching 208 lm/W. The luminous efficiency is more than 200lm/W, which means: First, basically all the a€?lightsa€? in the traditional lighting field have products that can replace and save energy. Second, the so-called a€?demanda€? rising channel of the professional field light source a€?obstructsa€? the release. Third, the technical "light efficiency" limit theory has been broken, and LED has no suspense in the main technology. The main technology and development trend of LED backlights are becoming more and more clear. The market has exploded with the emergence of 208lm/W "turning point". LED large-size backlight market officially bid farewell to "future time".

          We can see that the LED backlight will be the main theme of 2010. First-line brands such as Samsung, LG, AOC and BenQ are beginning to introduce LED backlight models in the whole line of products. This shows that LED backlight technology is basically mature and will rise in the future. The space is clear, and when the LED backlight starts mass production, its cost will continue to decrease, which will fundamentally threaten or even subvert the CCFL backlight.

          Large-size LED backlight test period has passed

          Last year was the LED TV trial period, this year is the popular period widely accepted by the people.

          While continuing to make progress, large-size LED backlights still face many challenges.

          According to research firm iSuppli, global LED-backlit LCD TV shipments will increase significantly in 2010, and shipments of 40-inch and above models are expected to increase by about 8 times, from 2.5 million units in 2009 to 18.8 million units. By 2013, this number will reach 112 million units, with an average annual growth rate of 405%.

          If last year was the test period for LED TV, then this year is the popular period for which it is widely accepted by the people. LED LCD TVs have entered the era of eruption in advance.

          In 2006, EU environmental regulations led to the phasing out of the current mainstream light source CCFL, and manufacturers must actively develop a new generation of environmentally friendly light sources. Such environmentally friendly light sources include External Electrode Lamps (EEFL), Light Emitting Diodes (LEDs), and planar light sources. Among them, LED backlight module has long life, power saving, low operating voltage, high color rendering index (CRI, ColorRenderingIndex), low temperature operation, fast response, environmental protection requirements, etc., so the number of manufacturers invested, including South Korea's Samsung And LGPhilips, Sony, Zhongqiang Optoelectronics, Chi Mei, AUO, Huaying, etc., have launched more than 30 inches of LED backlight module samples.

          In November 2004, Sony took the lead in launching the first large-size (40-inch and 46-inch) LCD TV QUALIA 005 series with LED backlighting. Samsung Electronics also announced its self-developed 46-inch LCD TV in January 2005. Both companies use LEDs produced by LumiledsLighting (LLC) of the United States. The 40-inch and 46-inch TVs use 325 and 450 LED modules respectively. Each module is arranged according to the required color rendering index. GRBRG 5 LEDs. In terms of power consumption, at present, the brightness of a single LED is still low, so more LED products are needed, resulting in a power consumption that cannot be compared with a CCFL lamp. In the case of a 40-inch model, the power consumption is about 290W when using a CCFL backlight, but the power consumption of the LED backlight is 470W. In addition, because more LED/LED components are used, the above samples need to add additional heat sinks such as fans, so heat dissipation is an important issue to be solved by LED backlights.

          Since then, Osram has demonstrated 32-inch LED backlight samples, using RGB multi-chip package structure, reducing the overall backlight module thickness to 40mm, color performance range is 110% compared to NTSC specifications, power consumption reduced to 140W At the same time, it also got rid of the demand for cooling fans. The most striking thing is that the 32-inch LCD panel of the non-color filter that Samsung Electronics showed in October 2005, which operates in the field sequential mode, is to illuminate the red, green and blue LEDs in turn. . The cost is further reduced because no color filters are required.

          However, it is undeniable that while continuously making progress, large-size LED backlights still face many challenges, such as: LED chip luminous efficiency improvement and reliability improvement, large size, high brightness, and heat dissipation problems, R/ The brightness and chromaticity produced by the G/BLED point source are not uniform, the power consumption and cost are high, and the drive control circuit is integrated.

          Energy-saving ultra-thin Internet TV is the driving force

          Nowadays, the color TV market, energy saving, ultra-thin, Internet TV become the biggest bright spot

          TV interactive entertainment features are more abundant, LED backlight is the common "star" of all factories

          Looking at the current color TV market, energy-saving, ultra-thin, Internet TV has become the biggest bright spot. In 2010, flat-panel TVs were baptized by a series of peak sales markets. The development of China's flat-panel TV market is strong and consumer demand is strong. Subsidy policies such as home appliances to the countryside, trade-in and energy-saving products for the benefit of the people will also further promote the consumption of domestic flat-panel TVs. At the same time, with product innovation and market demand changes.

          In 2010, China's flat-panel TV technology trends showed three highlights: First, energy conservation and environmental protection. The attention of TV products is fully implemented to the technical level. Manufacturing companies control TV energy from TV screens and modules. The wide application of LED backlights makes TV's energy saving and contrast indicators more prominent. Second, TV ultra-thin and exquisite design is more in line with consumers' home-like preferences, and become an important reference for consumers' purchasing decisions. Third, in the case of improved technology and content, TV Internet access in 2010 has become the trend of the times. The interactive entertainment function of the TV is more abundant. In the middle, the "LED backlight" is the common "star" of the factories and the main selling point.

          Whether it is metering or direct type, whether it is white light or RGB (red, green and blue), whether it is active or passive dynamic backlight, whether the color gamut is expanded, whether it is multi-touch screen, whether there is 32 inches in front The following may be replaced by OLED trends, but this year, LED backlights through the "cool" in 2009, this "specialty" of professional lighting sources has finally bloomed in the market as expected in the industry. Such "Ice and Fire Two Heavens" confirms the famous saying of investing in the semiconductor industry many years ago: "Everything is possible!" The LED backlight and the LED general lighting have started to form the "two-shot meeting of the LED light source bursting", they affect each other. Promoting each other not only promoted the entire LED industry, but also gave the semiconductor integration industry a chance to develop rapidly. The traditional electronics industry such as IC, power supply and drive was also reborn.

          "Venture investment will come back again." LED backlights and LED general lighting step into "now in progress." The "burst" of LED backlights, and the "launch" of general-purpose LED light sources, will completely change the pattern of existing light sources in the next two years. LED light sources, the fourth generation of light sources broke out. Following Edison in 1890, after the CFL and CCFL buffers, the lighting CIE standard will also bid farewell to the history of almost no principle changes from 1940. The human light source has since entered the era of semiconductor light sources.

          亚洲 欧美 图片 自拍 视频
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