Abstract:
A knob structure includes a holder, a steel ball, an elastic metallic piece, a swiveling element and a connecting element. The holder has at least one through hole. The steel ball is slidably placed inside the through hole. The elastic metallic piece and the swiveling element reside at either sides of the holder. The elastic metallic piece slidably lies against the steel ball. The swiveling element has a sliding portion which has a plurality of notches spaced at intervals. The sliding portion slidably lies against the steel ball so that the steel ball slides into or out of the notches by turning the swiveling element. The steel ball has a smooth surface and is in point-to-point contact with the sliding portion and with the elastic metallic piece. Therefore, frictions therebetween are so small that no scraps generate due to the frictional operation.
Abstract:
A method of removing a substrate structure is described. A plurality of pillars is formed on a substrate by using a photolithography etching process. A group III nitride semiconductor layer is grown on the plurality of pillars. The plurality of pillars is etched to separate the group III nitride semiconductor layer from the substrate by using a chemical etching process.
Abstract:
A gallium nitride-based light emitting device with a roughened surface is described. The light emitting device comprises a substrate, a buffer layer grown on the substrate, an n-type III-nitride semiconductor layer grown on the buffer layer, a III-nitride semiconductor active layer grown on the n-type III-nitride semiconductor layer, a first p-type III-nitride semiconductor layer grown on the III-nitride semiconductor active layer, a heavily doped p-type III semiconductor layer grown on the first p-type III-nitride semiconductor, and a roughened second p-type III-nitride semiconductor layer grown on the heavily doped p-type III semiconductor layer.
Abstract:
A heat dissipating structure for a portable electronic device which includes a heat generating electronic member. The heat dissipating structure includes a base, a first heat pipe, a heat conducting sleeve, and a second heat pipe. The base is mounted on the heat generating electronic member. The base includes a through groove defined therein. One end of the first heat pipe is received in the through groove. The heat conducting sleeve includes a through hole defined therein. The through hole is configured for pivotably connecting the other end of the first heat pipe. One end of the coaxially joining with the first heating pipe in the heat conducting sleeve. The base is configured for conducting heat generated by the heat generating electronic member to the first heat pipe. It is advantageous that the heat dissipating structured can be mounted in limited space.
Abstract:
A flip chip package process is provided. First, a substrate strip including at least one substrate is provided. Next, at least one chip is disposed on the substrate, and the chip is electrically connected to the substrate. Then, a stencil having at least one opening and an air slot hole is disposed on an upper surface of the substrate strip, an air gap is formed between the stencil and the substrate strip, the air gap connects the opening and the air slot hole, and the chip is located in the opening. Finally, a liquid compound is formed into the opening of the stencil to encapsulate the chip, and a vacuum process is performed through the air slot hole and the air gap, so as to prevent the air inside the opening from being encapsulated by the liquid compound to become voids.
Abstract:
The present invention discloses a touch screen comprising a flexible print circuit board, an electrically conducting layer, and a flexible control board. The flexible print circuit board has a functional plane, and the functional plane comprises a plurality of electrically conducting areas. Each of the electrically conducting areas is capable of transmitting a corresponding signal when conducted. The electrically conducting layer is disposed on the functional plane of the flexible print circuit board. The flexible control board covers on the conducting layer and comprises a plurality of pressing areas, wherein each of the pressing areas corresponds to one of the conducting areas. By pressing any of the pressing areas, the corresponding electrically conducting area on the flexible print circuit board is conducted, so the conducted electrically conducting area transmits the corresponding signal.
Abstract:
A method of fabricating a photoelectric device of Group III nitride semiconductor comprises the steps of: forming a first Group III nitride semiconductor layer on a surface of an original substrate; forming a patterned epitaxial-blocking layer on the first Group III nitride semiconductor layer; forming a second Group III nitride semiconductor layer on the epitaxial-blocking layer and the first Group III nitride semiconductor layer not covered by the epitaxial-blocking layer and then removing the epitaxial-blocking layer; forming a third Group III nitride semiconductor layer on the second Group III nitride semiconductor layer; depositing or adhering a conductive layer on the third Group III nitride semiconductor layer; and releasing a combination of the third Group III nitride semiconductor layer and the conductive layer apart from the second Group III nitride semiconductor layer.
Abstract:
A network switch fabric is provided for a clustering system to facilitate flexibility of network-related interconnection selection and system scalability. The network switch fabric includes replaceable network switch(s) and network interface(s) selectively configured on a base board. Multiple types of interconnection protocols with similar characteristics will be able to implement on a common infrastructure of network switch fabric. A pass through card operating as a network interface is also applicable on the network switch fabric to directly connect with an external network. The pass through card allows the network switch fabric supporting the clustering system to be scalable, thereby capable of supporting a large-scale cluster computing.
Abstract:
A rod antenna and a method for operating the rod antenna. The rod antenna includes a two-dimensional patch for radiating and/or receiving an electromagnetic wave, the patch extending along a plane defined by two coordinate axes orthogonal to each other. A feeding line is coupled to the patch for transferring signal energy to and/or from the patch, and a dielectric rod radiates and/or receives the electromagnetic wave, the rod extending longitudinally from the patch in direction of a third coordinate axis outside of the plane defined by the first two coordinate axes. A metal holder is coupled to the patch and to the rod for transferring the electromagnetic wave between the patch and the rod.