Electronic device with infrared touch input function

An electronic device comprising:

• a display panel;
• an infrared touch module comprising:
• a rectangular circuit board parallelly mounted under the display panel;
• an array of infrared emitters arranged along one side of each pair of opposite sides of the circuit board;
• an array of infrared receivers arranged along the other one side of each pair of adjacent sides of the circuit board, and facing a corresponding one of the array of light emitters on the opposite side, the infrared receivers being configured for receiving infrared light from the array of light emitters correspondingly;
• and
• wherein a light guide is mounted on each infrared emitter and each infrared receiver, and the light guide one each infrared emitter is operable to guide the light emitted from the light emitter to the corresponding infrared receiver via the light guide mounted thereon.