Patent ID: 8446391

Claim:
An optical touch display, comprising: a display panel having a first edge, a second edge adjacent to the first edge, a third edge opposite to the first edge and a fourth edge opposite to the second edge; a light source module disposed beside the first edge and the second edge of the display panel, the light source module being configure for providing a first parallel light and a second parallel light passing through above a display surface of the display panel, the first parallel light passing from the first edge of the display panel through the third edge of the display panel, and the second parallel light passing from the second edge of the display panel through the fourth edge of the display panel; and a sensing module disposed beside the third edge and the fourth edge of the display panel, the sensing module being configured for sensing the first parallel light and the second parallel light and comprising: a first reflecting component facing to the third edge of the display panel and being configured for reflecting the first parallel light passing through above the display surface of the display panel to parallel with the third edge; a second reflecting component facing to the fourth edge of the display panel and being configured for reflecting the second parallel light passing through above the display surface of the display panel; a first sensing component disposed on a pathway of the first parallel light reflected by the first reflecting component, and the first sensing component being configured for sensing the first parallel light reflected to parallel with the third edge by the first reflecting component; and a second sensing component disposed on a pathway of the second parallel light reflected by the second reflecting component, and the second sensing component being configured for sensing the second parallel light reflected by the second reflecting component.