| 摘要 |
An infrared touch display apparatus, includes a touch screen, a first circuit board arranged above the screen, a second circuit board arranged at the left side of the screen, a third circuit board arranged below the screen, a fourth circuit board arranged at the right side of the screen, emitters E1˜En and E′1˜E′m evenly spaced and fixed on the first circuit board and the second circuit board, and receivers R1˜Rn and R′1˜R′m evenly spaced and fixed on the third circuit board and the fourth circuit board, to receive the infrared light emitted from the emitters, wherein n and m are natural numbers greater than one. Infrared light emitted by each emitters E1˜En is transmitted along a first direction and a second direction, infrared light emitted by each emitters E′1˜E′m is transmitted along a third direction and the second direction, the first direction is substantially perpendicular to the third direction.
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