Abstract: A portable electronic device includes a first body and a second body. The first body includes a casing, a supporter, a first magnetic component and a torsion component. The casing includes an accommodating trench and a first trench communicated with the accommodating trench. A first lateral of the supporter is pivoted to the casing via the torsion component, and a second lateral of the supporter includes a notch. The magnetic component is slidably disposed in the first trench. The second body is pivoted to the first body and includes a second magnetic component. When the supporter is located in the accommodating trench and the first magnetic component extends into the notch, the supporter is positioned inside the accommodating trench by the first magnetic component, and the torsion component stores elastic potential energy.

Abstract: A portable electronic device includes a first body and a second body. The second body includes a processing unit, and a first touch panel, a second touch panel, a keyboard and at least one detecting module electrically connected to the processing unit, respectively. The keyboard is slidably disposed above the second touch panel, and the detecting module is adapted to detect a position of the keyboard. When the keyboard is located at a first position, the keyboard module covers the second touch panel, and the detecting module transmits a first signal to the processing unit so that the first touch panel is turned on. When the keyboard is located at a second position, the keyboard exposes the second touch panel, and the detecting module transmits a second signal to the processing unit so that the first touch panel is turned off. A touch panel controlling method of the portable electronic device is further provided.

Abstract: A polyester polymer and a method for manufacturing the same are revealed. Sulfonate groups (—SO3) are used for modification of polyethylene terephthalate (PET) and chemical extrusion technique is used in modification processes. The physiochemical properties of PET sulfonate obtained including moisture absorption, secondary transition temperature, melting point etc. are improved significantly. Thus the dyeing process can be carried out at lower temperature and the dyeing depth is improved. The purpose of energy saving and reduced carbon dioxide emission are further achieved.

Abstract: An embodiment discloses a method for modulating stress of a semiconductor film and comprises the steps of: providing a substrate; forming a semiconductor film on the substrate; performing an annealing treatment to the formed semiconductor film; and determining a residual stress of the semiconductor film at a certain compress strain, a certain tensile strain, or zero by controlling a temperature of the annealing treatment.

Abstract: The present invention relates to a pulsed laser deposition system, and particularly relates to a pulsed laser deposition system capable of using several different targets. In the pulsed laser deposition system, a beam-splitting device is provided to split a UV laser beam into several UV laser beams and to introduce these UV laser beams to different targets simultaneously. Therefore, the pulsed laser deposition system can use several different targets and can be used to form doped epitaxial layer (III-V semiconductor film) and ternary or quaternary epitaxial layer (III-V semiconductor film).

Abstract: A control circuit for reducing electromagnetic interference is provided. The control circuit includes a periodic signal generator and a modulation controller. The periodic signal generator adjusts a modulation periodic signal generated by the periodic signal generator, according to a feedback modulation signal. The modulation controller is coupled to the periodic signal generator, for receiving the modulation periodic signal, and adjusting a frequency of the received modulation periodic signal according to a plurality of delay periods set according to a plurality of control signals, and generating the feedback modulation signal.

Abstract: A control circuit for reducing electromagnetic interference is provided. The control circuit includes a periodic signal generator and a modulation controller. The periodic signal generator adjusts a modulation periodic signal generated by the periodic signal generator, according to a feedback modulation signal. The modulation controller is coupled to the periodic signal generator, for receiving the modulation periodic signal, and adjusting a frequency of the received modulation periodic signal according to a plurality of delay periods set according to a plurality of control signals, and generating the feedback modulation signal.