O-film – New Riverdi technology for enhancing viewing angles
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Today, we would like to introduce a technological innovation that improves the viewing angle of any Riverdi display – O-film.
With O-film limiting viewing angles are no longer a problem. Through research, we have found a solution to enhance TN glass viewing angles and – what is more important, a way to overcome gray scale inversion.
The option of adding O-film is available for every Riverdi display. Simply contact us and tell us what you need, and we’ll give you the perfect customized display solution.
TN technology and the problem of viewing angles
Most of the display solutions today, meant for industrial use, are TFTs and LCDs based on Twisted Nematic (TN) technology. But how does TN technology work?
It employs nematic liquid crystals positioned between two surfaces of glass substrates coated with transparent ITO (Indium tin oxide). These plates of ITO are covered with alignment layers that rub in the same direction. So, when voltage is applied, the molecules start aligning along the electric field. In the end, TN technology takes advantage of the ability of the nematic crystals to rotate the polarization of light passing through it.
In fact, TN technology is well-known and reliable. It has a wide temperature range, sufficiently fast pixel response and, what is the big dominance on the market, cost-effectiveness.
However, TN suffers from limited viewing angles, and a phenomenon called gray scale inversion.
O-film solves the problem
Thankfully our team has found a solution to overcome gray scale inversion in displays.
How did we accomplish this?
By changing the structure of LCD TFT and altering the top polarizer with a special film that widens viewing angles. Or as we like to call it – O-film.
As you can see in the image below, by using the O-film, the gray scale inversion has disappeared and the viewing angles have become wider.
More about Riverdi customization
We are famous for our customized display solutions, and for good reason. Our team of experts is there to make sure you get exactly what you need. Be it one display or a thousand, the same focus and skill are devoted.