LED application highlights the rapid increase in NB backlight market penetration

Compared to incandescent lamp, fluorescent lamp and other traditional light source, LED is a semiconductor device, no use of tungsten wire or glass, vibration resistance makes the device life longer. LED small size, light and easy to control, easy to meet the needs of the application of a very small or array module, can be achieved in the past did not have the lamp design. LED spectral concentration of visible light, will not harm the body is light, and in recent years the LED luminous efficiency is greatly improved, Nichia announced in 2009 the laboratory developed the luminous efficiency of 249 lm/W white LED, the level of commercialization has reached around 150 lm/W, far higher than incandescent or fluorescent lamps, the luminous efficiency is high. The potential of energy saving is also higher. 2008 global light-emitting diode (LED) market size of $6 billion 700 million. Looking forward to the future development of general lighting, automotive, display backlight will become the key to its market growth.

2009 by the impact of the global financial tsunami, consumer spending fell sharply, delaying the purchase of related electronic products. Businesses also reduce advertising spending and capital spending, so that the LED market demand decline. But the increase in government spending, LED outdoor lighting market growth, as well as the NB backlight module and lighting market and other emerging market driven, reduce the negative impact of the global economic downturn, the estimated global LED market in 2009 than 2008 only slightly decline 1%. LED with energy saving, multi color, long life and other characteristics, is conducive to the creation of a new selling point of the product, which will make the system vendors more active use of LED, in order to attract the attention of consumers and consumption. Forecast global LED market will gradually recover from the third quarter of 2009, the global LED market will have significant growth in 2010.

NB LED backlight module with rapid growth in market penetration

Due to the continued decline in the price of LED backlight module, each NB manufacturers to create NB product differentiation, but also accelerate the use of LED backlight module. Including Sony, Toshiba, Apple, Acer, DELl, LG, Samsung, ASUS, HP and other system manufacturers continue to introduce LED backlight models for LED backlight module, accelerated by the time history declaration and plan, even more panel makers AUO declared in full by the end of 2011 to the LED NB backlight module.

2008 to benefit from NetBook and NB vendors actively launch LED backlight NB products, so that in 2008 the LED backlight module penetration rate of about 18%. The future light and electricity continues to be the mainstream NB development, and actively participate in the fuel manufacturers, estimated 2009 LED backlight module penetration will reach about 38%, forecast in 2010 LED backlight module in NB market penetration will have the opportunity to more than 70%.

Analysis of the prospect of NB LED backlight module product development trend, in addition to continuing to develop future price, color, high performing development of thin LED backlight module, to meet the needs of consumers, mobile, portable video needs, is the future of the LED backlight module development focus.

The use of LED backlight module LED, the luminescence mechanism for producing white light blue YAG fluorescent powder. Although this design is mature, and the price is cheap, but because of the color (CRI) is about 60~75, resulting in poor color display NB display. In the future, as the NB turns from the transaction processing function to the video processing equipment, the display quality demand is bound to be greatly enhanced, and the color performance of LED must be improved. At present, there are two main directions of development: one is the use of multi chip white LED, and the other is to change the structure of fluorescent powder. The advantages and disadvantages of the two schemes are shown in table 1.

Table 1, NB with LED backlight module high color development direction

As for the development of thin, the current is to continue to reduce the thickness of LED, the current widespread use of 0.5~0.8mm, further to the development of 0.3~0.5mm.