摘要:
Disclosed is an interposer including a polyhedral body having first and second surfaces facing each other, a plurality of electric terminals formed on the first surface; and a plurality of vias extending through the first and second surfaces. In addition, a semiconductor package includes a printed circuit board having a plurality of electric contacts formed on an upper surface and an interposer having first and second surfaces facing each other, vias extending through the first and second surfaces, and first electric terminals formed on the first surface. The interposer is seated on the printed circuit board so that the vias correspond to the electric contacts.
摘要:
A semiconductor device includes a driving active region defined in a substrate and at least three driving transistors disposed at the driving active region. The driving transistors share one common source/drain, and each of the driving transistors includes individual source/drains being independent from each other. The common source/drain and the individual source/drains are disposed in the driving active region.
摘要:
A method of forming a piezoelectric resonator having a resonation structure is provided. According to the method, it is possible to simplify a manufacturing process of the piezoelectric resonator and raise the yield of the resonation structure from a green body in the manufacturing process. The method includes preparing a base structure, a protection structure, and a green body. The green body has polarized electrodes on selected two different surfaces, respectively. The green body has crystals having polarization axes aligned parallel to each other toward a predetermined direction. Resonant plates are formed by cutting the green body and the polarized electrodes to a predetermined width. Resonant electrodes are formed on the resonant plates. Resonation structures are formed by cutting the resonant electrodes and the resonant plates. Finally, a piezoelectric resonator is formed by interposing the resonation structure between the protection structure and the base structure.
摘要:
A method of independently generating row parity information and column parity information in an encoding process using a low density parity check (LDPC) matrix includes generating code word vectors by generating column parity information using a parity check matrix and message information; selecting code word bits for generating row parity information among code word bits in the generated code word vectors; and generating the row parity information using the selected code word bits, where the selecting of the code word bits comprises: excluding code word bits related to the generation of other row parity information. Accordingly, independent parity information can be generated by generating row parity information on the basis of code word bits without related to generation of column parity information.
摘要:
A surface mounted resonator having a cap means and a method of forming the same using an insulating ceramic substrate are provided, which can simplify a process of fabricating the surface mounted resonator. The surface mounted resonator includes: a cap means having upper and lower cap means, wherein the lower cap means has a vibration groove and the upper cap means has cap terminal connection electrodes; a resonance means disposed under the cap means and including upper, middle and lower resonance means, each of which has resonance electrodes and resonance holes disposed around the resonance electrodes; a condenser means having first to fifth condenser means sequentially stacked under the resonance means, wherein the first condenser means has another vibration groove, the second to fourth condenser means have condenser electrodes, and the fifth condenser means has condenser terminal connection electrodes; and connection wires for connecting the condenser terminal connection electrodes and the cap terminal connection electrodes, wherein the connection wires are disposed in contact with the resonance electrodes and the condenser electrodes, the vibration grooves in the first condenser means and the lower cap means are opposite to each other, and the resonance means is disposed in contact with the cap means and the condenser means at upper and lower surfaces.
摘要:
A mobile communication terminal with a one-keyed data input device is disclosed. The one-keyed data input device includes a recess portion formed on the top surface of a main body of the terminal and a center key positioned in the recess portion. The center key is arranged to be movable in the uppermost or lowermost direction or in the leftmost or rightmost direction from the center of the recess portion and movable in the radial direction from the center. The device includes a data input assembly having a signal generation guide assembly for generating an electrical signal for selected data, said signal generation guide assembly being movable together with the center key coupled thereto, a vertically moving conductive material disposed below and in contact with the signal generation guide assembly, against which the signal generation guide assembly may move, a first elastic body disposed below the vertically moving conductive material, for providing the vertically moving conductive material with a physical force to get contact with the signal generation guide assembly, and a base supporting the first elastic body and the signal generation guide assembly, for transferring generated electrical signal to a main printed circuit board.
摘要:
An apparatus for precisely driving X-Y stages using and plate springs a VCM (Voice Coil Motor) performing biaxial movement in relation to a specimen transferring apparatus used in a microscope. The apparatus includes X and Y axis stages of the same structure, each of which has a part driving on both fixed sides and a part connected to the driving part by an elastic member and driving in the same direction as the driving part, and magnetic force generators connected to the stages respectively for providing the stages with driving force.
摘要:
A device provided in a mobile phone for notifying the user of the receiving of a call signal, includes a vibrator having a rotor mounted in the body of the mobile phone to make a vibration tangibly sensed by the user when the call signal is received by the mobile phone, a battery pack detachably attached to the body to supply power to the mobile phone, and a protrusion formed on the outer surface of the battery pack at the weight center of the mobile phone. Thus, the mobile phone placed on a surface is rotated about the protrusion upon receiving the call signal.
摘要:
A volume holographic data storage(VHDS) system incorporates therein a tapered optical fiber for generating a speckle beam pattern from the tapered optical fiber for increasing the amount of holograms to be stored into a photorefractive crystal. The VHDS system includes a light source for generating a coherent light beam, a beam splitter for splitting the coherent light beam into a reference and a signal beams, a storage medium for storing the multiple holograms thereinto, a mirror for directing the signal beam to the storage medium, a coupler for coupling the reference beam to the tapered optical fiber, wherein one end of the tapered optical fiber has a tapered structure to give perturbation in the form of a speckle pattern to the reference beam from the tapered optical fiber and the reference beam containing the speckle pattern travels to the storage medium after being transmitted through the tapered structure, thereby the speckle pattern reference beam interfering with the signal beam in the storage medium.
摘要:
The present invention provides a positive active material including a lithium-containing compound represented by the following Chemical Formula 1 and a rechargeable lithium battery including the positive active material. LiFe1-x-zMxM′zPyO4. Chemical Formula 1