Relec partners with Digiwise for any-angle displays
The retarder film allows information to be clear and readable in outdoor or safety areas, where TFT displays may be viewed by user wearing polarised sunglasses which can be problematic as the screen can appear virtually black when viewed at some angles.
The light output from TFT displays is inherently polarised in one plane, explained Relec. If this plane is out of line with the wearer’s sunglasses, this can render the screen virtually black to the observer, regardless of whether the screen is in standard landscape or portrait mode. Applying a wave retarder film over the display controls the light wave polarisation of the different refraction indices for linearly polarised light, travelling in either the fast or slow, perpendicular axes (see diagram). By optimising these light wave characteristics, polarisation can be controlled so that the display is clearly visible when wearing polarised lens sunglasses.
Relec supplies 12.1-inch TFT modules offer a high brightness level (up to 1500cd/m2) which can be fitted with a quarter wave retarder film these displays can be used in either portrait or landscape mode and indoors and outdoors.
Relec offers a wide range of display options, including projective capacitive (PCAP) or resistive touch screens; optical bonding, water rejection, glove touch and anti-bacterial films. The specialist supplier has a team of engineers to help customers develop the best solution for a specific application and can help with sourcing and manufacturing.
Relec added that it carries stock on most display items.