Interacting display device

摘要

A display device includes a display cover screen, a two-dimensional matrix of photo-detecting elements constructed on a first substrate that is visually transparent, and a matrix of pixel elements constructed on a second substrate. The first substrate is sandwiched between the display cover screen and the second substrate.

主权项

1. A method applied on a display device having a display screen, the method comprising:
projecting an invisible light beam from a remote device towards the display screen to create an invisible light spot on a first substrate having an area that is at least 80% of the area of the display screen, wherein the invisible light beam with a spreading angle less than 20 degrees is generated from a light source on the remote device that is more than 0.1 meter away from the display screen overlaying a matrix of pixel elements; measuring a position of the invisible light spot on the first substrate using a two-dimensional matrix of photo-detecting elements constructed on the first substrate, the two-dimensional matrix of photo-detecting elements being arranged in a plurality of rows and a plurality of columns, wherein a photo-detecting element in the two-dimensional matrix of photo-detecting elements is electrically connected between a first conducting line in a first array of conducting lines and a second conducting line in a second array of conducting lines crossing the first array of conducting lines; and transmitting to a computer digital signals specifying the position of the invisible light spot on the first substrate.