LED backlight technology brings disruptive change

For backlight, the benefits of LED is the first energy-saving, the photovoltaic efficiency is two times that of CCFL, or even higher. Secondly, the LED requires only low voltage drive, less power consumption. When the power consumption of liquid crystal display to achieve the following 10W, you can use USB (USB3.0) driver, which will lead to the replacement of desktop display. Third, LED does not contain mercury, can reduce environmental pollution.

LED will certainly pose a threat to the CCFL, the former maturity and popularity will become a new driving force in the LCD industry. The difference between the two in the structure of the diaphragm, LED system backlight efficiency is higher.

LED applications to the backlight has brought a disruptive change. 3M has developed a backlight system that does not require a light guide plate or diaphragm, or even both. New light guide plate is a 0.2mm thick plastic film, with the LED light source can replace the light guide plate, the diffusion film and prism film and other parts of the function, the small LCD device backlight thickness is reduced by more than half, and the assembly is more convenient. In the middle of a film with a refractive index close to nano air diffuser, adhesive glue, previously must use air spaced prism film and reflective polarizer materials such as a diaphragm, realizes the system structure of traditional diaphragm can not do.

Liquid crystal glass plate light transmittance is very low, about 95% of the waste in the LCD panel. The polarizer can only pass through 50% of the light, and the other 50% of the light is turned into heat energy on the polarizer. The 3M blocks the diaphragm in front of the polarizer, allowing the 50% pass of the light to be recycled until it passes through the polarizer. This recycling mechanism, which we call the light recycling, optical cycle.

We are now working with major TV manufacturers have programs, including some high-end models and LED models. This is a win-win situation, TV manufacturers to improve the scope of the use of products, reducing the design difficulty and material costs.

Our advantage is the product line is very wide, a combination of a variety of different technologies, that is, cross platform. There are many competitors, but we are the first to do this diaphragm. In the LCD diaphragm, the major manufacturers are in the manufacture of optical gain and a higher degree of integration of the diaphragm.

Many of the UV light in the first fluorescent TV backlight will turn the plastic yellow. We have a lot of film layer and the layer between the glue, glue than plastic is not stable, more easy to yellow. At this time, the use of adhesive platform, the development of anti UV glue, and then used on the diaphragm, the diaphragm in the fluorescent lamp resistance to yellow performance is the best.

Now flat-panel TVs LCD TV, plasma TV, the future there are OLED tv. Some products for OLED, can reduce the loss of light, increase brightness, extend the life of OLED. Others have waterproof function.

In the big screen, with more 3D glasses, we use the technology to increase the brightness of the screen effect of 3D tv. In the mobile phone and other small screen, providing a naked eye view of 3D technology. It relies on a special optical structure and diaphragm, the light is divided into the left eye and right eye, a picture can only enter the left eye, another picture can only enter the right eye.

Now focus on energy saving. Considering how to reduce the loss of the earth's environment during the whole life cycle of the product, some materials are used. In the production, manufacturing, to reduce energy consumption and environmental pollution, so that the product is lighter and thinner.

Our new idea is to save the material in the backlight as much as possible while maintaining the same functionality. For example, in the LCD TV, with air when the light guide plate, the TV can be lighter, thus eliminating the need for steel structure support.

Cancel the light guide plate to change the air, do not make any changes will not do. We have adopted a number of unique technology that allows the light to fully spread in the air, the technology through the 0.1 mm thick diaphragm, so that the light fully meet the existing TV optical display.

China first LCD panel backlight optical film project - Shanghai chemcysun functional film industry project officially put into operation at the end of July, they have many kinds of diaphragm production, a diffusion film, a brightness enhancement film, backlight and film, the whole industry chain is very wide. Now a number of domestic enterprises in China directly involved in the production of optical products, with the progress of technology, the localization rate of products will be higher, lower cost, more perfect industrial ecological chain, local procurement can be achieved. At present, the liquid crystal display industry in China is relatively weak, the Chinese enterprises should pay attention to the development of new technologies and new products, and do a good job of talent accumulation, give full play to the value of talent.

Now flat-panel TV LCD TV, plasma TV, OLED TV and the future. Some products for OLED, can reduce the loss of light, increase brightness, extend the life of OLED. Others have waterproof function.