A touch sensor assembly may include a sensor mounting portion formed at a insulating substrate, and a soldering spot provided at the sensor mounting portion, wherein a touch sensor is stably fixed to the sensor mounting portion by the soldering spot. In addition, the touch sensor assembly according to an embodiment of the present disclosure includes a copper coating film coated on a insulating substrate, and a top layer printed on the copper coating film, wherein the copper coating film is protected by the top layer.