Georgia Tech Research Institute
 
Issues

Displays: Issue 2 of 6

Issue: LCD viewing angle limitations make it difficult to see the display from a seated position.

Many LCD screens are optimized for viewing from a particular angle, and demonstrate a sharp drop-off in contrast and readability when viewed at angles that are off-axis. If the display of a kiosk is optimized for standing users, users who are viewing the display from a wheelchair or other personal mobility device may have difficulty seeing the contents of the display.

Populations Impacted: Users with lower mobility impairments.

Potential Solutions:
  • Ensure that the viewing envelope of the selected display accommodates both standing and seated users. The viewing envelope of the display, which describes the range of eye positions from which the contents of the display are visible, can be determined via simple geometry based on the viewing angles of the display and the height and angle at which the display is mounted. Ensure that the display's viewing envelope includes the eye positions of both seated and standing users.

  • Allow users to adjust the angle of the display. A vertical tilt adjustment for the display will help to accommodate both seated and standing users.

Applicable Guidelines:
ADA-ABA - 707.7.1
HFDS - 5.1.2.6, 5.11.1