O-film - wide viewing angle solution

A well-known problem of TN TFTs is the reduced viewing angle for one direction. For this direction the picture will be inverted. 

While a typical solution is the usage of expensive MVA or IPS cells instead of TN cells, which provide better viewing angles for all directions, there is also a more cost-efficient technology.

A special polarizer - o-film - can be used to increase the viewing angle.

The picture shows one module with o-film (left), the other without. While the left one shows normal colors, the right one is difficult to read.

 no greyscale inversion with o-film

However, also the disadvantages should be mentioned. The brightness and contrast will be decreased by o-film and in fact o-film is more expensive than normal polarizer.

 reduced contrast with o-film

As a conclusion it can be said that o-film can be a good solution to enhance exhisting modules or provide low-budget wide viewing angle solutions.

O-film is suitable for many TN cells. Contact us for details.

 

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Kontakt

LCD-Mikroelektronik Dr. Hampel + Co. GmbH
Griesbachstr. 7
D-76185 Karlsruhe

Germany

Telefon: +49(0)721-98478-0
Telefax: +49(0)721-98478-29

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