Patents Assigned to Multitaction Oy
  • Diffusing of direct backlight for a display panel
    Patent number: 9864122
    Abstract: A rear illuminated light guide for an LCD screen with in-coupling gratings to receive backlight from an input surface and to spread received backlight laterally within the light guide. Out-coupling gratings receive laterally spread backlight and output at least some of the received laterally spread backlight through an output surface that is opposite to the input surface and towards the LCD screen. The input and output gratings have lateral offset.
    Type: Grant
    Filed: January 11, 2013
    Date of Patent: January 9, 2018
    Assignee: Multitaction Oy
    Inventors: Tommi Ilmonen, Heikki Hyvärinen