Samsung has developed, in collaboration with Stanford University researchers, a new architecture for OLED screens that supports resolutions up to 10,000 pixels per inch (PPI) and that can be used in virtual reality devices, allowing to bridge the current flaws in technology.
The researchers explain that the new architecture uses OLED films that emit white light between two reflective layers. The first is a silver film and the second is described as a “meta-surface” made of reflective metal and composed of multiple microscopic pillars.
Each of the pillars works as a pixel with a size of approximately 2.4 microns. The optical “meta-surface” is able to change the reflective properties of light, allowing certain colors to be emitted, or to “resonate”, through pixels.
Through the new OLED architecture, it is possible to create screens with higher pixel densities, without the luminosity “burning” them, something that often happens in some types of white OLED screens.
The researchers say the new type of screen developed could be particularly useful for creating virtual reality headsets. A higher pixel density results in more realistic images, while also avoiding visual effects that have a negative impact on the immersion process. At issue is, for example, the “Screen-door effect”, where users can observe the lines that separate the pixels.
Now, based on the work carried out by the researchers, Samsung is developing a full-scale display that uses the new OLED architecture, checking if the manufacture of this type of screen is viable.