Polarizer - LCD Panel Main Material
Oct 27, 2018
1, the working principle of the polarizer
Polarizers are called polarizers and control the polarization direction of a particular beam. When the natural light passes through the polarizer, the light whose vibration direction is perpendicular to the transmission axis of the polarizer is absorbed, and only the polarized light whose vibration direction is parallel to the transmission axis of the polarizer is left.
In the liquid crystal display module, two polarizers are respectively attached to the two sides of the glass substrate, the lower polarizer is used to convert the light beam generated by the backlight into polarized light, and the upper polarizer is used for analyzing the polarized light modulated by the liquid crystal, and the polarized light is generated. Light and dark contrast, resulting in a display. The imaging of the liquid crystal display module must rely on polarized light. Without any polarizer, the liquid crystal display module cannot display images.
2, the basic structure of the polarizer
The polarizer is mainly made of a composite of a PVA film, a TAC film, a protective film, a release film, and a pressure sensitive adhesive. Basic knot of polarizer
The core film that polarizes in the polarizer is a PVA film. After dyeing, the PVA film adsorbs iodine molecules with dichroic absorption function, and the iodine molecules are arranged in order on the PVA film by stretching to form a polarizing film with uniform dichroic absorption performance, and the transmission axis is perpendicular to the direction of stretching. .
