Optimistic about LED backlight applications O2Micro launched a variety of new products

With the light emitting diode (LED) gradually replaced the cold cathode fluorescent lamp (CCFL) as flat display and notebook computer (NB) liquid crystal display (LCD) backlight technology major source; has environmental protection, long life and low power consumption and other advantages of the LED are detonated a huge green business opportunities, and attract many manufacturers actively attack LED backlight market. Especially for LED backlight notebook computer application, have many years of experience and technology in the field of O2Micro backlight and power management provides a series can achieve higher image quality and uniformity of LED drive innovation.

According to iSuppli statistics, in 2009 about 105 million pieces of TFT LCD panel will use LED as backlight technology, market demand for LED will have a market size of $163 million, this figure is expected by 2012 will increase 9 times, reaching the level of $1 billion 400 million. ISuppli and is expected to LED backlight technology penetration will increase from 3% in 2009 to about $39% by 2013. In addition, DisplaySearch data is also expected by 2012, more than 50% of the large size TFT LCD (more than 10 inches) and all laptops will switch to LED backlight technology.

O2Micro intelligent lighting company executive vice Lin Yonglin and cited the relevant statistics pointed out that the permeability of LED backlight application in notebook computer has reached 50%, estimated in the third quarter of this year also reached the proportion of 70-90%; "shows the importance of environmental protection industry, and the green consumption consciousness in the end have. Therefore, the large size of the traditional CCFL backlight used to turn the LED backlight, it is now we are optimistic about an emerging market, LCD. "

LED backlight technology has gradually become popular in high-end notebook computers, especially in response to the requirements of multimedia functions in the notebook computer, the image quality has become one of the key performance. However, there are some technical difficulties in the development of green NB LED. Lin Yonglin pointed out that the developers are often faced with the multi string number LED flow, LED linear dimming noise (audible noise), power dissipation (power dissipation), and the manufacturer for the protection of the specifications is not a problem.

In order to help developers overcome these challenges, O2Micro published a series of high-speed pulse width modulation (PWM) function of the LED driver. This series of product design for LCD backlight can operate in high frequency range, and the use of switch mode fast switching (switching mode), spike (burst mode) mode and phase shift (phase-shift) technology, area light and its proprietary (Area Lighting) technology, effectively eliminate noise and improve the image quality and display in contrast, the notebook computer display a more consistent and high quality images.

For example, O2Micro for 6, 7 inches to 11.6 inches netbook (netbook) published by OZ9960, will be launched in the third quarter OZ9989 and 4 channel LED driver for IC; notebook computer developed by OZ9956B, OZ9959B, OZ9955A/B, and the forthcoming 2 Channel 6 new products; and according to the PND, LED and TV monitor applications including 1, 3, published in 4, 6, 8 different number of channels in a variety of products.

At present, the market has a number of major NB manufacturers have chosen the O2Micro LED backlight drive, for its high order notebook. Lin Yonglin pointed out that the company's biggest advantage is to meet customer requirements for different specifications, including 3x9/4x7/4x8/6x10/8x8/8x9 different configurations of LED drive products, which can cover most of the market demand.

Lin Yonglin is very optimistic about the prospects for development, LED backlight, he said, "with the LED chip performance continued to improve in the future, the cost decreased gradually after the LED backlight applications will be more and more high permeability in the notebook computer and other areas of the market; therefore, demand and decision depends on the consumer market, completely replace CCFL as LED backlight LCD backlight the main technology will point the day and await for it. "