Development of polarizing film for Character LCD Modules

(1) iodine based polarizing film
Composed of PVA and iodine polarizing long been on the market in the LCD occupies a large proportion. Materials and extension technology today under constant improvement and transmission polarization degree are very close to the theoretical value (100% degree of polarization; transmittance of 50%). COG LCD Module
(2) durability of the polarizing film of
Using dye formulations with a high temperature and humidity so polarizing film, light and other features, mostly used in cars, ships or aircraft used by the LCD. But polarization rate is less than iodine-based and expensive are its shortcomings. With today's development is the extension of the PVA alignment and development of a uniform absorption in the visible region of high partial optical properties of dye molecules, and its performance has partial rotation system with iodine polarizing rather, only the price is still higher than iodine-based polarizing film is high.
(3) an optical compensation film
With more and more technological advances in LCD products, so the coloring for polarizing film, perspective, light leakage so requires relatively increased, so need to do a variety of optical compensation film compensation. For example (STN-LCD) liquid crystal molecules twist due to more than 90 degrees resulting in the use of linearly polarized polarizing phenomenon will be colored, and its solution is coupled with a phase difference film. Coding System lcd module