The Purposes And Effects Of Using Polarizer Film
With every invention, experts provide a useful cause and reasons to use the product besides conventional explanations. Old televisions are replaced by LCDs (liquid crystal display) to take pictures and graphics more presentable and readable. LCDs are now a more common source of entertainment for both residential and commercial purposes. LCD polarizer film irradiates the display bypassing the light through the front of the glass. It is supplied from a hind light that is positioned behind the LCD. In some cases, light is a combination of both backlight and ambient light. Before going into the further description of LCD polarizer, lets first discuss the basic conception of polarizer film.
Polarizer film is effectively used to reduce strong light, eliminating the scattered light and dazzling reflection so that light can travel parallel to the object, giving a clear view of the image. 7 layers of composite materials are used in the manufacturing process of polarizer film. The national standard of sunglasses, and ultraviolet standard, are used to protect your eyes. The first layer is itself the polarizing layer. The core of the lens provides more than 99% of the polarizing effect with actual captivation of glare. Moreover, the second and third layers are bonding sheets, that are highly resistive in cutting, bending, baking, cutting, and can endure the examination of an extreme environment. The fourth part and fifth part are an infrared absorbing layer, which engrosses more than 99% of UV ultraviolet while protecting your eyesight. At last, the sixth and seventh films are anti-impact layers, which provide toughness and impact confrontation, preventing lens graze and extend the admiration life of the lenses. Apart from these, there are three types of LCD polarizers:
Reflective Polarizer: it reflects the mirror image of the object or a display, applies to the bottom layer of the glass. It assures the 100% reflection of light back towards the users. The brighter the ambient light, the louder the contrast, making it easier to observe and read the display. Whereas, the backlight will not be shown as it is blocked from passing through the front glass.
Transmissive Polarizer: unlike reflective polarizer, a transmissive polarizer allows all light from the hind light to pass through the bottommost and uppermost layer of cut-glass towards the user. The ambient light will add very little radiance to the show. The transmissive polarizer will be brighter, making the overall display brighter, while reducing the LED driving current. Whereas, the display id difficult to read if the backlight is off. Poor battery-powered products can be washed out by direct sunlight.
Transflective Polarizer: a combination of both reflective polarizer and transmissive polarizer film. It allows the light to pass through the front glass and also permits backlight to pass through the front layer of the glass. If placed under good ambient light, then the backlight will automatically be turned off, making the display readable. Or else, the backlight will be turned on, if LCD is located in poor ambient light. Whereas, when the backlight is placed behind, though it will permit the light to pass through, the display may not be as bright as it was in its original place.