Hangzhou Xuhong Technology Co.,Ltd
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Polarized board is an important part of the TFT LCD. The polarized plate absorbs the light in the direction of the polarized shaft vertical direction, which only allows the light in the direction of the polarized shaft to transform the natural light into a straight polarized light. The materials of the polarization plate are all in the form of membrane or plate, so they are called polarized membranes or polarized plates. In the TFT LCD LCD screen, it will also use the phase differential board or wide -view corner compensation film according to the product needs.
1. The working principle of polarizing board
Natural light contains polarized light of vibration in various directions. All polarizers are decomposed in the X and Y directions. Only polarized light that is parallel to the Y direction parallel in the polarization shaft passes through the polarized plate. Thus natural light becomes a straight line polarization after the polarization board.
2. the material and performance of polarizing board
The polarizing function of the polarized plate is implemented by polarizons (PVA layer). High transmission, high polarization, and good hue are the requirements for polarizers. As a practical product, polarizers must have high durability to ensure compatibility with the TAC layer, as well as their own good heat resistance, humidity resistance, impact resistance, cold resistance, and light resistance. If polarizers have poor durability, they are prone to uneven display in specific directions. In addition, uneven dyeing of iodine is also prone to uneven display.
Keep the shape of the polarizer and protect the water loss of polarizons. The TAC layer must have high water resistance, low heat contraction, and high durability to ensure that the polarized board can work effectively within the high temperature range. When used in high temperature and high fever, thermal contraction will cause uneven polarization.
The adhesive material is a component connected to the polarizer and the glass substrate.If the polarizing plate is attached, the adhesive material overflows or has a foreign body attachment, which will cause the product to be polluted. If the polarized panel attachment process appears bad and needs to be replaced, it is required that the sticky material is easy to replace. Adhesiveness is an important indicator in the use of engineering. It is not standardized to produce some uneven display around the polarized board. The hardness and dosage of the sticky material will eventually affect the uniformity of polarizing, especially when used in IPS full -angle film.
The light will be composed of each composition on the polarization plate, so it must ensure that the TAC layer and sticky material have high transparency and optics. In addition to the basic polarizing function, high -quality polarizing boards will also design some thin films with additional functions such as AG,AR, and hardening between the surface protective film and the TAC protective layer. Therefore, the quality of polarizing board plays a vital role in the overall quality of the TFT LCD .
AUO LCD :https://www.auo-lcd.com/products/auo-lcd-screen/
Innolux LCD:https://www.auo-lcd.com/products/innolux/
