Patent ID: 7812831

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 flat input unit, a first pixel and a second pixel always displaying identical images simultaneously, said first pixel and said second pixel positioned apart from each other via a third pixel therebetween; and an optical lens 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.