subject: Analysis Of New Led Backlight Module Market Outlook [print this page] As new technologies emerge, the last few years liquid crystal display (LCD) and plasma display panels (PDP) has become more intense competition between the results is the product price as the technology choice increases. In the market close to saturation, another technology transition period is approaching, many people believe that this is the LED backlight module (BLU) monitor application of next-generation debut as a good time.
As new technologies emerge, the last few years liquid crystal display (LCD), and plasma display panels (PDP) has become more intense competition between the results is the product price as the technology choice increases. In the market close to saturation, another technology transition period is approaching, many people believe that this is the LED backlight module (Back Light Unit, BLU) debut as a next-generation display applications a good time.
LED BLU reason for being sought, because it has with the cold cathode fluorescent tube (CCFL) BLU distinct advanced features. LED BLU with high color gamut, high contrast, mercury free, RoHS environmental standards, to drive low-voltage and fast response and so on. Now, in addition to evaluating the overall advantages of LED, the designers began to understand the power LED BLU solution.
LED BLU's high cost structure, making it the only next-generation LED display applications barrier. Even LED BLU display has excellent visual effects, its application or has been subject to high costs associated. LED BLU for small screen mobile devices have been popular for several years, the manufacturers are continually striving to overcome obstacles, driven by the price, the technology has gradually turned to medium size display applications such as digital photo frame, car navigation devices, notebook computers, and Monitor. In addition, despite the failure to achieve the goal of low-cost market, many mainstream TV manufacturers have begun to introduce some new prototype products, try to create LED BLU TV market.
To create a larger display screen LED BLU, it must be able to cope with higher demands of the driver IC. Large-screen TV with the LED BLU, the BLU circuit (at least) two functions must be considered: the use of local dimming to improve contrast and reduce the pulse-driven motion blurring function, which is compared to CCFL BLU LED BLU strengths Department. LED BLU driver IC can be dynamic backlight control, is also a LED light technology, the relative of today's other strengths lie; and relative to the small screen, this feature is more important on the big screen. As mobile devices or digital photo frame show a small screen, you do not need to use local dimming technology, or pulse-driven and does not need the big screen required excellent visual display.
LED BLU to design dynamic control-driven TV IC, LED matrix array must be carefully arranged, as the channel for each channel number and the current and voltage specifications in the IC is very important. Recently, many TV manufacturers more active in the promotion of the new LED BLU television.
Changes in the market led to a solution that can solve two major problems: First, the high cost of LED; Second, the design of LED matrix uncertainty. It is believed that white LED RGB LED visual effect than the much better (especially in the color gamut area), but the study pointed out that the human eye is almost not distinguish between white LED RGB LED and the differences between the human eye at first glance because of the brightness of the most sensitive The RGB LED and White LED's brightness is almost the same. Because the white LED is much cheaper than the RGB LED (although still expensive than CCFL), it order to quickly create a new market, TV makers on the use of white LED.
LED type chosen to speed up the array design, because designers do not need by group except control each RGB color, the need not bother to consider the local dimming. With white LED also remove many designers have not been able to solve problems.
LED BLU for the power IC development of new business opportunities. For example, the built-in DC-DC module, 24V or 40V input voltage of the SMPS, on at least 16 to 32 output channels (depending on screen size), each channel requires at least 60mA of current.
This voltage requirement means that we can expect LED BLU market will be more changes, this change only involved in MOSFET, including driver IC. In the CCFL BLU market, IC market is closed, only a few key patents owned IC manufacturers to participate, when new competitors enter the market, there will be serious clashes. In the LED BLU market that there are no rules, because the main components from the DC-DC inverter into the system. Key factor in success or failure of the market is how the designers can accurately adjust the driver IC specifications, so as to provide "system specified in IC". Current LED BLU design concepts are still looking for more changes to the application for different screen sizes to improve the cost structure.
From the market point of view, many people "LED BLU will be the next backlight solution?" This issue with caution. CCFL has been at the cost and performance innovation, and active matrix organic light emitting diode (Active Matrix Organic Light Emitting Diode, AMOLED) technology may lead to the final out LED. Displaybank company survey found that, LED market is expected to take the 2010 backlight module market share of 40%.
The current market and technology leader is working to eliminate many technical barriers, combined with new LED BLU prototype large numbers, indicating that the market will reverse. From a technical point of view, due to reliance on general-purpose LED driver IC DC-DC technology, rather than the unique technology involving patent issues, so the market than the CCFL inverter provides more opportunities. If any one company the power scheme to launch an ideal system application, it will be regarded as market leader. Many excellent power solutions manufacturers can design a suitable circuit, providing a powerful and precise balance of IC. And manufacturers looking for the ideal solution is a can SMPS and DC-DC modules together to reduce the cost of the design concept. So far, this market remains open to any creative, skilled and dedicated design.
