Optical performance evaluation technology of protective film

LCD essential optical film-- Polarizing film polarizing film is usually used for the front and rear layers of LCD. One of the polarizing films is placed parallel to the top of the other, and the screen brightness of the LCD is the brightest; If one of the polarized films is placed vertically above the other, the LCD screen is almost black. Therefore, it can be judged that the optical characteristics of LCD, such as brightness and contrast, are greatly affected by the characteristics of polarized film. Viewing angle characteristic evaluation phase difference film is used to compensate the phase difference generated when light passes through LCD display screen. Using this film can produce an LCD display screen that is equally clear from both the front and the side. By using can accurately evaluate the viewing angle characteristics (Phase difference, spindle and transmission rate) The technology can not only design a phase difference film that optimizes the phase difference, but also design a new function that adapts to different kinds of LCD displays.