Patent ID: 8013844

Claim:
An input and output device comprising: a display unit including a plurality of pixel groups aligned in a matrix, each of said pixel groups having a plurality of pixels, a first pixel in said plurality of pixels in a first pixel group and a second pixel in said plurality of pixels in a second pixel group displaying identical images simultaneously, said first pixel and said second pixel positioned apart from each other via a third pixel, said third pixel being in said plurality of pixels in either the first pixel group or the second pixel group; a flat input unit; and an optical member which turns light outgoing from said first pixel among the pixels belonging to each of said pixel groups toward a first direction and turns light outgoing from said second pixel among said pixels belonging to each of said pixel groups toward a second direction, and a locus of a first light outgoing from said first pixel and a locus of a second light outgoing from said second pixel which are driven by the same signal intersect with each other on a front face of said flat input unit; wherein said flat input unit is disposed in front of said display unit and transmits light outgoing from said display unit and detects the coordinates of a contact point when said flat input unit is contacted from the front face.