Abstract: A mobile phone and method for managing communication fees of the mobile phone sets a plurality of charge standards of different telecommunication providers and an allowable communication fee of the mobile phone during a preset time period. Calculation of a total communication fee of a current call is according to a corresponding charge standard of a telecommunication provider of the mobile phone and a previous total communication fee of the mobile phone. The current call may be terminated when the total communication fee reaches the allowable communication fee.

Abstract: An integrated circuit package includes a die mounted on a substrate, an integrated heat spreader set above the die, and an array of carbon nanotubes mounted between the die and the integrated heat spreader. The integrated heat spreader is fixed on the substrate, and includes an inner face. The array of carbon nanotubes is formed on the inner face of the integrated heat spreader. Top and bottom ends of the carbon nanotubes perpendicularly contact the integrated heat spreader and the die respectively. Each carbon nanotube can be capsulated in a nanometer-scale metal having a high heat conduction coefficient.

Abstract: A planar light source device (100) for a display device includes a light guide plate (120) and pluralities of light emitting diodes (110). The light guide plate has a light incident surface (121). The light emitting diodes are located in the vicinity of the light incident surface. Each light emitting diode has a light emission surface opposite to the light incident surface of the light guide plate, and has a diffraction grating (117) provided on the light emission surface for improving a range of divergence of light beams emitted therefrom.

Abstract: An integrated circuit package includes a die mounted on a substrate, an integrated heat spreader set above the die, and an array of carbon nanotubes mounted between the die and the integrated heat spreader. The integrated heat spreader is fixed on the substrate, and includes an inner face. The array of carbon nanotubes is formed on the inner face of the integrated heat spreader. Top and bottom ends of the carbon nanotubes perpendicularly contact the integrated heat spreader and the die respectively. Each carbon nanotube can be capsulated in a nanometer-scale metal having a high heat conduction coefficient.

Abstract: A vacuum vapor deposition apparatus includes a evacuable container (11), a support mechanism (30) disposed inside the evacuable container and including a support frame (32) for supporting substrates (344) on turnable support plates (34), a rotating mechanism (20) disposed outside the evacuable container and attached to the support mechanism, and at least one vapor source (40) disposed inside the evacuable container and opposite to the support plates, for producing a vapor of material to be deposited on the substrates. The support mechanism includes a turning mechanism (36), and a control unit for controlling operation of the turning mechanism. The turning mechanism is connected with the support plates. The support plates are turnable in the container via the turning mechanism and the control unit.

Abstract: A gas sensor (3) includes: a base (30), two electrodes (31, 32) formed on the base, a zinc oxide layer (34) formed on surfaces of the base and the electrodes. The zinc oxide layer includes a plurality of zinc oxide nanofibers, each having a columnar or a tubular microstructure. Preferably, the zinc oxide nanofibers are substantially parallel to each other and substantially perpendicular to the base and electrodes. Numerous apertures between adjacent zinc oxide nanofibers can retain gas molecules. If the microstructure is tubular, apertures within the zinc oxide nanofibers can also retain gas molecules. In either case, the sensitivity of the gas sensor is improved. A method is also provided.

Abstract: A planar light source device (100) for a display device includes a light guide plate (120) and pluralities of light emitting diodes (110). The light guide plate has a light incident surface (121). The light emitting diodes are located in the vicinity of the light incident surface. Each light emitting diode has a light emission surface opposite to the light incident surface of the light guide plate, and has a diffraction grating (117) provided on the light emission surface for improving a range of divergence of light beams emitted therefrom.

Abstract: A gas sensor (3) includes an insulating substrate (31), two electrodes (33, 35) formed thereon, and a sensing layer (37) formed on the insulating substrate and the electrodes. Each electrode defines a plurality of receptacles (332, 352) adjacent a surface thereof The sensing layer contains a plurality of sensing particles (372). A portion of the sensing particles is received in the receptacles. The sensing particles are physically divided into several connected parts by the receptacles, and accordingly are highly dispersed. Thereby, more spaces among the sensing particles are provided, for improving the sensitivity of the gas sensor.