When you turn your laptop on every day, you probably don’t put much thought into how the screen works. The process is actually quite brilliant, using the same properties of polarization. By adjusting the degree of polarization of light, the laptop screen can produce the colors and textures we see. However, we still need to build the screen and its internals. Along with plasma-enhanced chemical vapor deposition, we need to coat the screen in such a way that it can transfer electricity. Read on for more detail about how this process works.
LCD screens, or liquid-crystal-display, is a clever method used to filter light through a screen. Using the same technique of polarization (think light through a prism), liquid crystals can filter light to change colors and create images. The liquid crystal part is necessary to filter light, as the particles can be arranged a certain way.
The liquid crystal is sandwiched in between glass with small grooves etched into it. These grooves are extremely tiny, with some pointing vertically and others pointing horizontally. PECVD is often used to coat the glass in anti-glare materials, which makes it easier for the user to make out the image formed by the manipulation of light through the liquid-crystals.
In order to arrange light the way we require to make images, we need to use electrical impulses. Utilizing opposing charges, LCD screens are able to push molecules a certain way. This tilts them, which helps either block light or let it through as needed. Of course, all of this happens in nanoseconds thanks to precise electronics, but LCD screens are never the less fascinating objects.