With the increasing popularity of 4K Ultra High Definition (UHD) LCD displays we are writing a new chapter in the production of large-scale interactive displays. The new UHD displays have a resolution four times greater than the standard Full HD (3840 x 2160 vs. 1920 x 1080). A 4K UHDTV display has a resolution of 8.3 megapixel against a resolution of 2.1 megapixels of a Full HD monitor. This increase in resolution is very visible in the touch screens where the user close to the screen for interacting. With a 4k display the user will not notice more the "pixels", which instead happens with a Full HD large screen display as a 70" or 82".
It was only in 2008 when Microsoft in collaboration with Samsung launched to the market the first Microsoft Surface, then renamed PixelSense and Samsung SUR40. That display had a resolution of 1024 x 768, 0.78 megapixels. A 4K UHD display has a resolution of 11 times higher.
With four times the number of pixels than HD, there are new challenges and opportunities in designing new interactive applications for 4K display. Applications built to work with a Full HD resolution will probably not be suitable to run on a 4K display.
Our Multi Touch Software nuiSense business was designed to fit all resolutions supported by Microsoft Windows 8.1 and then it adapts to HD Ready, Full HD and Ultra HD (UHD) display and projectors.
Have a better resolution makes texts and graphics sharper, more realistic video and photos and documents easier to scan because the user does not necessarily have to zoom in to read the content.
The US company Ideum is a pioneer in the build of 4K multi-touch tables and 4K touch walls. All of their 55", 65" and 100" multi touch tables and touch walls are available with 4K Ultra HD displays and are able to recognize up to 100 simultaneous touches thanks to the latest Projected Capacitive (PCAP) technology.