DSE 2015: Planar Offers a Variety of 4K Solutions, Including UltraRes and EP Series Displays March 12, 2015 | Home / March 12, 2015 rave-video / DSE 2015: Planar Offers a Variety of 4K Solutions, Including UltraRes and EP Series Displays DSE 2015: Planar Offers a Variety of 4K Solutions, Including UltraRes and EP Series Displays