Display Performance

The standard display switches from bright gray to dark blue and vice versa.
Yes. We also offer various nuances of red displays and also green displays. We can also develop custom displays to match your corporate colors, brand, or similar. Please contact us and let us know your requirements
We have no black and white displays available on the market. Only lab-scale samples. Contact us for more information.
Yes. The entire display stack is printed with conventional printing equipment. Adding one additional layer is very convenient.
The image retention time will be affected by the surrounding humidity. The image retention time will decrease in a humid environment and increase in a dry environment. With proper encapsulation (such as a moisture barrier with water vapor transmission rate at 1 x 10-2 g/m2/day or lower), this humidity sensitivity can be eliminated.

In dry environments, the image retention time can be as long as 24 hours. In humid environments, it can be as little as a few seconds. A typical image retention time for indoor conditions and without any moisture barriers will range from 5 to 60 minutes. The encapsulation process will be done in an environment to optimize for the preferred performance.
The update speed is, similarly to image retention time (answered above), affected by the surrounding humidity. The update speed will be faster in a humid environment and slower in a dry environment. With proper encapsulation (such as a moisture barrier with water vapor transmission rate at 1 x 10-2 g/m2/day or lower), the humidity dependency can be eliminated. A nominal update frequency will range from 50 ms to 500 ms in an indoor environment.

Lifetime and Environmental Stability

The lifetime of the display is directly correlated with the number of switching cycles that are performed. One switching cycle is counted when the display is switched from OFF -> ON -> OFF. The degradation of the display is caused when a voltage is applied to turn the display off (from colored to bright state). Close to no degradation is caused if the display is constantly on (colored) or when it is constantly off (bright state). With accurate driving, the lifetime will exceed 100 000 switching cycles.
-5 to +40 degrees Celsius has been confirmed. However, no permanent damage has been observed in temperature from -20 to +80 degrees Celsius, but the display driver needs to be modified.
The displays are not sensitive to UV.
Not with appropriate encapsulation. For non-encapsulated displays, variations in humidity will affect update speed and image retention time. The humidity dependency can be eliminated with proper encapsulation (such as a moisture barrier with water vapor transmission rate at 1 x 10-2 g/m2/day or lower). Read more about update speed and image retention time

General Technology Questions

No. The rdot display and E Ink display are fundamentally different technologies. They both share the same principle of being reflective display technologies, meaning that they reflect ambient light and that no backlight is needed. E Ink is an electrophoretic technology. The Rdot Display is utilizing organic electrochromic materials.
We do not have matrix versions on the market yet. We expect to introduce an entirely printed passive matrix version in 2019. There is no fundamental limitation regarding active matrix versions, but there is currently not any projects involving active matrix.