A light projecting module for use in electronic devices, the light projecting module including a circuit board having a laser light source, a seat mounted on the circuit board, a transparent conductive film mounted on a surface of the seat away the circuit board, at least one conductive layer formed on the seat and having first and second end portions, at least one conductive ball electrically connecting the first end portion to the transparent conductive film, and at least one insulating colloid formed at a junction of the transparent conductive film, the first end portion, and the conductive ball. The second end portion of the at least one conductive layer is electrically connected to the circuit board.