OPTICAL TOUCH DEVICE AND TOUCH DISPLAY DEVICE HAVING THE SAME

摘要

An optical touch device is disclosed. The device comprises: a light transmission layer (1) comprising a first total internal reflection (TIR) surface (11) and a second TIR surface (12) facing the first TIR surface (11), a first side surface for connecting the first TIR surface (11) and the second TIR surface (12) on a first side, and a second side surface for connecting the first TIR surface (11) and the second TIR surface (12) on a second side opposite to the first side; a light source (3) on a side of the first TIR surface (11) distal to the second TIR surface (12) for emitting a light beam, the light source (3) is proximal to the first side; and a detector (4) on the side of the first TIR surface (11) distal to the second TIR surface (12), for detecting the light beam passed through the light transmission layer (1) and transmitted into the detector (4), the detector (4) is proximal to the second side. A first side angle between the first side surface and the first TIR surface (11) is an acute angle. A second side angle between the second side surface and the first TIR surface (11) is an acute angle.