The development trend of backlight module optical film is similar to the development trend of LCD: all will tend to be high brightness, thin, light and high color gamut.
According to the Display Search statistics and forecasts, with the continuous global market demand for liquid crystal modules, the global market demand for optical films for liquid crystal displays will also show a steady growth trend is expected in 2017, the global LCD backlight module with optical film Market demand will reach 720 million square meters, of which the market demand for reflective film, diffusion film, brightness enhancement film, micro-lens optical film and dual brightness enhancement film will reach 184 million square meters, 184 million square meters, 204 million square meters, 76 million square meters and 71 million square meters.
The backlight module optical film covers the reflective film, light guide plate, diffusion film, optical film, composite film, quantum dot enhancement film, reflective incremental composite film, the technology is the use of optical microstructure and scattering particles to achieve the light energy Redistribution, and to achieve the specific purpose of use.
The most important role of the diffusion film is to provide a uniform surface light source for the liquid crystal display, but also has a certain role to enhance the brightness, referred to as BEF, which is a key component of the TFT-LCD backlight module is very transparent Good PET surface using acrylic resin, precision forming a uniform prism pattern of optical film.
With the global LCD module market demand continues to increase, the global market demand for liquid crystal display with diffusion diaphragm will also show a steady growth trend is expected by 2017, the global liquid crystal display backlight module with diffusion diaphragm market demand will reach 290 million Sq m, an increase of 0.2 billion sq m compared with 2016, an increase of about 7%.
Optical composite film simply put two or more optical functions on a film.It is driven by its several trends and needs: Now the LCD screen to do more and more, Both the pursuit of thin and light, but also the pursuit of brightness effect. The advantages of the composite film is: small thickness, low cost, and its disadvantage is the decline in brightness (prism damage, diminished ability to concentrate; adhesives absorb some of the light ), The process of increasing the difficulty.
Brightening polarizers can be reused by the light loss of the polarizer to at least restore 50% light loss.
2017 is the first year of the quantum dot, have recently come into contact with this term, the ordinary liquid crystal display has a lot of quantum dots to upgrade the product to what is the real meaning of this product? In fact, the current quantum dot TV is the LCD TV + Quantum Point backlight film, its ability or LCD TV.Of course, the quantum dot itself is glowing, so in fact only the use of quantum dots material ability can be achieved imaging, but at present the product is still very immature.
Quantum dots are nanoscale fluorescent materials, which themselves have luminescent properties. Quantum dots in a quantum dot high-gamut film will produce red and green light when illuminated by a blue LED backlight and mix with a portion of the blue light that passes through the film Get white light
Although the QLED camp constantly emphasizes that color saturation is superior to OLEDs and there is no problem of service life, the QDEDs are still difficult to achieve commercialization due to the poor external quantum efficiency and the inability to maintain long-term light emission at this stage.
Therefore, QLED camp in the short term will be QD backlight products to fight, that is, a layer of backlit layer covered with quantum dots film, commonly known as QDEF.
The gamut and backlight efficiency are improved by the glow characteristics of the quantum dot, which increases the color and brightness of the screen and produces a color effect that is at least 30% -50% higher. However, because the backlight is an essential part, it increases Machine thickness, so compared with the advantages of OLEDTV is not obvious, so a new generation of QLEDTV glass light guide plate may be used to reduce the thickness of the solution.
According to the data from the industry chain survey, the current overseas quantum dot film price is 80-100 US dollars / square meter and the domestic quantum dot film unit price is 60 US dollars / square meter. It is estimated that with the expansion of production capacity, the technology promotion, quantum dot raw materials and film price reduction Is the general trend, the cost will drive the quantum dot TV penetration continues to improve, according to the industry chain to understand and measure to determine the 3-5 point quantum dot film price will stabilize at 20 US dollars / square meters with its cost down , The future is likely to popularize in the market.