US Patent 9568952 Display device apparatus

A display device apparatus includes a housing that is sized and configured to attach to a computer device. The housing can include a cavity for releaseably retaining a second display device that is connectable to the computer device. The second display device is moveable out of the housing via a slot defined in the housing so that the second display device is moveable from a first position within the housing to a second position that is external to the housing.