摘要:
Disclosed is a method of manufacturing a golf ball having a multilayer structure. The method uses a forming apparatus including an upper mold, a lower mold, and an intermediate mold. The upper mold and the lower mold include a plurality of hemispheric cavities, respectively. The intermediate mold includes a plurality of protrusions having smaller diameters than those of the cavities, on a top and a bottom to correspond to the cavities.
摘要:
An internal voltage generator of a semiconductor memory device includes a proportional to absolute temperature (PTAT) current generator configured to generate a PTAT current having a varying current in proportion to a temperature change, a current control circuit configured to generate an internal current identical with the PTAT current and generate an internal voltage based on the internal current, and an offset circuit configured to control the internal voltage to a set voltage level.
摘要:
An OFDM transmission apparatus having minimal transmission delay comprises a training symbol storage and generation unit, a delay unit and a controller. The training symbol storage and generation unit stores training symbols for the preamble, and outputs the stored training symbols when a training symbol output request signal is received. The delay unit receives data for the signal field from the MAC layer, delays the received data by the data processing time of the scrambler, and outputs the delayed data to the convolution encoder. The controller outputs the training symbol output request signal, requesting the preamble of the frame, to the training symbol storage and generation unit when a frame transmission request is received from the MAC layer, and outputs a data request signal, requesting the signal field and the data field, to the MAC layer in consideration of total data processing time (TPROCESS).
摘要:
A light emitting diode having an AlInGaP active layer and a method of fabricating the same are disclosed. The light emitting diode includes a substrate. A plurality of light emitting cells are positioned to be spaced apart from one another, wherein each of the light emitting cells has a first conductive-type lower semiconductor layer, an AlInGaP active layer and a second conductive-type upper semiconductor layer. Meanwhile, a semi-insulating layer is interposed between the substrate and the light emitting cells. Further, wires connect the plurality of light emitting cells in series. Accordingly, it is possible to provide a light emitting diode, in which a plurality of light emitting cells are connected in series to one another through wires to be driven by an AC power source.
摘要:
The present invention relates to a light emitting device. In the light emitting device of the present invention, light emitting cells of a first light emitting cell block and light emitting cells of a second light emitting cell block corresponding thereto are connected in parallel so that a current can cross the light emitting cells of the first and second light emitting cell blocks. Thus, even though a leakage current occurs in some of light emitting cells, the current is allowed to cross light emitting cells connected in another direction, thereby preventing overload on some of the light emitting cells due to the leakage current and ensuring uniform light emission and prolonged life span in the AC light emitting device.
摘要:
A flat panel display includes a thin film transistor formed on a substrate; a planarization layer formed on the thin film transistor; a first electrode layer formed on the planarization layer and electrically connected with the thin film transistor through the via hole formed in the planarization layer; a pixel definition layer formed on the planarization layer and in which an opening for at least partially exposing the first electrode layer is formed; an adhesive reinforcement layer formed at least between the planarization layer and the pixel definition layer on the top of the planarization layer; an emitting layer formed on the first electrode layer; and a second electrode layer formed on the emitting layer and the pixel definition layer. The flat panel display has an improved adhesive property between a pixel definition layer and a planarization layer, which prevents a chipping phenomenon of the pixel definition layer.
摘要:
The present invention relates to a shear reinforcement material of a reinforced concrete structure, which is installed in a reinforced concrete structure to increase resistance against shear failure. The truss-type shear reinforcement material having double anchorage functions at both top and bottom thereof is configured by installing double anchor heads on the top and the bottom of a truss (20), which is formed by connecting an upper member (24) with a lower member (26) through connection members (21) such as vertical members (22) or inclined members (23). Therefore, the shear reinforcement material according to the present invention can improve shear resistance, shear reinforcement and ductility, because upper anchor heads (34) and the upper member (24) carry out a double anchorage function on the top while lower anchor heads (44) and the lower member (26) carry out a double anchorage function on the bottom, and furthermore, improves construction quality as building a concrete structure becomes more convenient.
摘要:
The present invention relates to a pouch pack having a pressure outlet formed at the time when a sealing region is thermally fused to therefore substantially reduce the amount of time required for the manufacturing process, with the pressure outlet being open precisely under pressure. A pouch pack having a pressure outlet according to the present invention comprises a main body which is formed of two opposedly facing sheets with a sealing region thermally fused in a hermetic manner by a heating pressure mold designed for thermally pressing a target sealing region and defines a storage space inside thereof; and a pressure outlet which is integrally formed on the sealing region of the main body and opens under pressure to discharge a content kept within the storage space. As a cavity is formed in a part of the heating pressure mold, only a corresponding region of the cavity experiences a reduced heating temperature and reduced pressure while the sealing region is being thermally fused, so that the pressure outlet and the sealing region can be formed at the same time. Alternatively, a recess is formed in a part of the heating pressure mold and a metallic material having a heat conductivity lower than that of the heating pressure mold is seated in the recess, so that only a corresponding part of the metallic material experiences a reduced heating temperature while the sealing region is being thermally fused so as to allow the pressure outlet and the sealing region to be formed at the same time.
摘要:
A laser induced thermal imaging apparatus and a manufacturing method of organic light emitting diodes using the same, which reduce or prevent the occurrence of impurities or void between an acceptor substrate and a donor film while performing a laser induced thermal imaging in a vacuum state. A laser induced thermal imaging apparatus includes: a substrate stage including an acceptor substrate for receiving an imaging layer, the imaging layer being formed on the acceptor substrate, and an electromagnet, a donor film having a permanent magnet being placed and laminated on the substrate stage, and the electromagnet forming a magnetic force with a permanent magnet of the donor film; a laser oscillator for irradiating a laser to the donor film; and a chamber having at least the substrate stage located therein.
摘要:
The present invention relates to an AC light emitting diode. An object of the present invention is to provide an AC light emitting diode wherein various designs for enhancement of the intensity of light, prevention of flickering of light or the like become possible, while coming out of a unified method of always using only one metal wire with respect to one electrode when electrodes of adjacent light emitting cells are connected through metal wires. To this end, the present invention provides an AC light emitting diode comprising a substrate; bonding pads positioned on the substrate; a plurality of light emitting cells arranged in a matrix form on the substrate; and a wiring means electrically connecting the bonding pads and the plurality of light emitting cells, wherein the wiring means includes a plurality of metal wires connecting an electrode of one of the light emitting cells with electrodes of other electrodes adjacent to the one of the light emitting cells.