LCD diffusion membrane definition and market brand profile

In the LCD module, CCFL uniform linear light source or LED point light source into surface light source, must by diffusion material such as diffusion membrane, make the light form the diffuse to achieve the effect of light. LCD diffusion membrane its principle is used in different refractive index of medium through the light, the light there is a lot of the phenomenon of refraction, reflection, scattering, and cause the effect of optical diffusion. In general, the LCD need two pieces of diffusion membrane, diffusion and the diffusion of membrane on each one, as the function is to make the light form the diffuse to achieve uniform light effect, expand more on eliminating prism prism chip design and protection function.

In backlight module material, compared with optical prism, diaphragm, proportion cost diffusion membrane is not high, but under the high brightness LCD TV specifications, product TV shows uniformity and brightness mainly by diffusion under the influence of the quality of the materials, the importance of diffusion membrane is not words but yu. Global spread the market size of the diaphragm in 2006 to $400 million, the main leading manufacturers for Japan Keiwa (and), Tsujiden, Kimoto with South Korea SKC, Shinwha manufacturers; Domestic has XuanMao, changxing into the whole process, anylink Keiwa diffusion film companies cooperation with Japan, on the back of the cutting, printing, packing, etc, and plans to step into the front process