Foreword: Under the background of “protecting the environment and conserving energyâ€, energy conservation has become a new concept advocated and encouraged by people. Under the promotion and stimulation of this trend of thought, China's energy-saving market is also prosperous. As a low-power, low-cost display solution, LED (light-emitting diode) backlights are increasingly favored by manufacturers and end-users. What is the outlook for the LED-backlit LCD market? Lets come look.
LED backlight resolution:
So what is LED backlighting? We know that the liquid crystal material itself does not emit light, and the light source on the back of the liquid crystal panel is required to provide light support. This kind of illumination source has been dominated by CCFL cold light tubes in the past. The illumination principle of CCFL cold light tubes is similar to the fluorescent tubes used in our daily use. However, CCFL cold-light lamps are also faced with problems such as uneven brightness, relatively high power consumption, and the inclusion of mercury. In contrast, LED backlights do a better job in terms of power consumption and material environmental protection, brightness uniformity is relatively high and the volume can be made more secure. Therefore, the prospect of LED backlight is very optimistic.
At present, many display manufacturers have begun to explore new growth in the market from LED backlights, but it is hard to say whether LED backlights can take on the responsibility of reviving the market. The author believes that LED backlighting is more important for portable devices such as notebooks than desktop desktops. Because it captures one of the key points of notebook products, it is power consumption and volume. Especially for business thin and light notebooks and netbooks, endurance often determines product quality.
For desktop displays, the meaning of LED backlighting is not as big as a notebook. At present, LED backlights are mainly W-LED (white LED) and RGB-LED (three-color LED). RGB-LED is a relatively high-end LED backlight product. Due to cost factors, it is mainly used in high-end LCD TVs. Better color gamut performance. The cost of W-LED is relatively low, so it is applied to mainstream consumer-grade display products. However, W-LED does not greatly improve the actual display effect compared to the traditional CCFL cold light tube. At the same time, the technology of LED as a display backlight module is relatively mature, and the service life has been greatly improved, reaching 100,000 hours higher than the life of CCFL cold light tube of 50,000 hours.
LED backlit LCD display advantages:
Compared with LCD liquid crystal displays, LED-backlit liquid crystal displays have advantages in terms of volume, brightness, power consumption, material, viewing angle and refresh rate. The power consumption ratio of the LED-backlit liquid crystal display to the LCD is about 10:1, and the higher refresh rate makes the LED-backlit liquid crystal display have better performance in terms of video, and can provide a viewing angle of up to 160 ??? Various texts, numbers, color images and animation information can also play color video signals such as TV, video, VCD, DVD, etc., and multiple displays can also be broadcasted online. The single element of the organic LED display has a reaction speed of 1000 times that of the LCD screen. It can also be taken under strong light and is suitable for low temperatures of minus 40 degrees. With LED technology, it is possible to produce displays that are brighter and clearer than LCDs, and have broad application prospects.
Say the future of LED backlight development with LCD
According to the LED shipment forecast report released by Displaysearch, a professional market research organization in the above table, we can see that there will be explosive growth in LEDs used in backlight modules for display products in the next few years. In 2012, it is estimated that LED backlights will be widely used in 1 inch to 70 inch liquid crystal display devices, while 34 billion LEDs will be used for backlighting of liquid crystal display products, which will grow by more than 300% compared with 2008.
From the current market LED-backlit LCD monitors, the price of LED-backlit LCD monitors has been gradually lowering. The four LCD monitors released by BenQ have been rolled out in the market. BenQ manufacturers have already had a lot of advantages over LEDs and plasma. For example, the display is more responsive, the screen can be made larger, the mechanical strength is higher, and it can be split and repaired, and even pixel-by-pixel color adjustment and compensation can be performed. At present, the only problem with LED displays is the cost. The cost of large outdoor displays is more than 10,000 yuan per square meter, and the price of desktop monitors already on the market is very expensive. However, as far as the current development trend is concerned, after semiconductor products, batch and integrated production, the price will drop drastically. It can be said that the current LED-backlit liquid crystal display has all the advantages of other displays and only one disadvantage is the price. Expensive, this shortcoming will be completely overcome in the near future.
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