LED backlight as the application of LCD industry products, has a long service life, high luminous efficiency, and no interference and high-cost performance has been widely used in electronic watches, mobile phones, BP machine, electronic calculators and the inductor, along with the increasing miniaturization of portable electronic products, the LED backlight has more advantages, so the backlight technology will extend to a more thin, low power consumption and uniform direction.LEDs are key components of mobile phones. A normal mobile phone or smartphone needs about 10 LED devices, while a color screen and mobile phone with a camera function need about 20 LED devices. At the moment, phones use a lot of backlights, 3.5 billion LED chips a year. At present, China has a large production of mobile phones, and most of the LED backlight is imported. For domestic LED products, this is an excellent market opportunity.