Abstract: A heat sink has a stand and a nano-carbon film. The stand is made of a strong and thermally conductive material and includes a lower surface, two sides and two sidewalls. The sidewalls are respectively formed on the sides of the stand. The nano-carbon film can provide excellent heat dissipation effect, is formed on the lower surface of the stand and includes at least one hole. The heat sink is mounted in an electronic device to make the stand contact electronic components through the hole of the nano-carbon film. Therefore, the heat generated by the electronic components can be dissipated by both the stand and the nano-carbon film. Besides, the heat sink is small in size so that it can be applied to small electronic devices. Moreover, the stand can hold the input unit and structurally reinforce the housing of the electronic device.

Abstract: A touch panel having hidden antenna has a multi-layer body and at least one antenna unit. The multi-layer body has a first electrode, a second electrode and an intermediate layer sandwiched by the first electrode and the second electrode. The at least one antenna unit is mounted on different positions inside the multi-layer body to constitute a plane antenna or a three-dimensional antenna. Accordingly, hidden inside the multi-layer body, the at least one antenna unit is not prone to defacement and damage, occupies little space, has a good communication quality and is durable.