Backlight growth fast lighting attention LED drive market segments

Editor's note: the rapid development of LED applications, LED drive manufacturers to bring new market opportunities. With the acceleration of LED lighting applications, more and more manufacturers began to focus on this market. This issue of LED driver invited the industry mainstream IC vendors for the current market and technology hot topics published brilliant views.

Backlight is the fastest growing lighting the most potential

. so far, the backlight is still the main driver of LED application market.

- long, lighting will be the most important one market for LED, is expected to 2-3 in the bottom, to replace the traditional lighting LED lighting will become a trend and bring amazing market.

LED driver according to the application to backlight, display, lighting and other fields, these areas who are currently the fastest growing, who had the most potential? What is the current market demand for LED lighting?

Michael Hsing

LED has launched a large-scale application in small and medium size backlight screen. In notebook computers, GPS (Global Positioning System), monitors and other fields, LED backlight has become the first choice, is phasing out the traditional CCFL (cold cathode fluorescent tube) backlight. LED applications in the notebook in 2011 will account for 50%, becoming the mainstream backlight. In addition, LED LCD TV backlight gradually began to be applied, is expected in 2012 will reach 10%.

Lighting has been a huge market. With the improvement of LED light efficiency, cost reduction and the maturity of the driving technology, LED is gradually entering the lighting market. Government departments are also vigorously promoting the concept of LED into municipal works to promote and promote the concept of green energy. All this indicates the potential of LED in the lighting market. The rapid expansion of the market will become a reality once the cost of LED is reduced to an acceptable price for the average family.

We see in LED as the lighting prospect at the same time, is also very aware of the difficulties in front of. In addition to the cost, LED driver is also an urgent need to solve technical problems. Lighting market now is not a driver for LED specification, such as whether to isolation, power factor correction, dimming and flow are not relevant norms of standardization and module to this LED drive power is difficult. The design of the driver module and the driver chip manufacturers have to design the corresponding modules or chips for each application, which causes waste of resources and environment.

Kelvin Tsiang

So far, backlight is still the main driver of the LED applied to the market, especially in the notebook computer, the Internet is even more so, the cold cathode fluorescent lamp replacement and LCD display applications. But with the advent of high performance, high brightness, long life of LED, combined with the rich color combination and energy-saving advantages, LED ushered in the rapid development in the general lighting market, also brought a huge market space for the application of LED drive.

LED is low voltage components for LED lighting, regardless of the power supply for LED AC-DC converter, DC-DC converter or battery, low voltage constant current drive is a key driver of LED. In addition, in order to ensure the advantages of LED lighting, LED driver must be reliable, efficient and safe (can withstand a variety of fault conditions), low cost, and can be easily implemented. Therefore, for different LED lighting applications, it is necessary to select the appropriate drive circuit topology. The A Morimi Semiconductor provides a wide range of LED driver for low power, medium power and high power applications. For example, the A Morimi semiconductor LED drive scheme contains applications for 15W-50W power. From the view of topology, the power supply is less than 100W in the low power LED lighting applications preferred flyback topology, and in order to provide higher efficiency, resonant half bridge dual inductor plus single capacitor (HBLLC) is the preferred topology. In addition, we must pay attention to the product target market energy efficiency standards. If necessary, consider PFC and provide the corresponding LED driver solution.

Jian-Shing Wu

LED development has been very mature in the display field, the whole industry from the display manufacturing, system development, LED chip development, LED package to LED IC driver development is very complete. Drive IC basically become a standard, into a stable development period.

The application of LED backlight in mobile phone, digital camera, PowerDVD and other small size on the screen has been very mature, in recent years there will be a high compound annual growth rate. With the improvement of LED luminous flux, the reduction of cost and the green environmental protection of LED (CCFL backlight containing mercury), wide color gamut and local dimming, it is in line with the development needs of the current LCDTV HD energy saving. Therefore, the growth point of the backlight in notebook, LCD TV and other large screen applications.

The lighting market is widely concerned, there are two main reasons: the performance of the 1.LED lamp itself (including power and luminous efficiency) to improve quickly, in reducing the cost, and the LED drive technology gradually improved, LED lighting stability and reliability have been greatly improved; 2 policy LED, such as green lighting products, in many countries and regions of concern and support. The LED lighting market driven demand is reliable and efficient (including power factor), low cost, small volume, so the design of LED driver for application specific market, such as LED lights, LED spotlights, LED lamp, LED bulb developed a series of LED drive products. I believe that with the LED lighting prices and performance improvements, LED