Abstract: A portable computer includes a computer main body, a display to form an image, a coupling member tiltably coupled with the display, a projection holder provided in one of the computer main body and the coupling member, and a projection part provided on the other one of the computer main body and the coupling member to be detachably coupled to the projection holder. Thus, the portable computer has the display that is easily separated and coupled from/to the computer main body, and the display that is separated from the computer main body is tiltable.

Abstract: A portable computer includes a computer main body, a display to form an image, a coupling member tiltably coupled with the display, a projection holder provided in one of the computer main body and the coupling member, and a projection part provided on the other one of the computer main body and the coupling member to be detachably coupled to the projection holder. Thus, the portable computer has the display that is easily separated and coupled from/to the computer main body, and the display that is separated from the computer main body is tiltable.

Abstract: A radiation apparatus for an integrated circuit semiconductor device and for a portable computer are provided. The radiation apparatus for an integrated circuit semiconductor device mounted on a circuit board of an electronic system includes a radiation member and a fan. The radiation member radiates heat generated by the integrated circuit semiconductor device, the radiation member being coupled to the integrated circuit semiconductor device. The fan emits the heat, transferred from the integrated circuit semiconductor device through the radiation member, out of the circuit board of the electronic system, the fan being arranged in parallel with the same direction as a horizontal direction of the integrated circuit semiconductor device. The radiation member has a radiation plate, a heat block and an assembly of radiation fins. The radiation plate has an upper plane and a bottom plane and one end part of the radiation plate is located over the fan.