Abstract: A secondary battery case manufacturing method of the present disclosure includes preparing a material, forming an impact formed product by performing impact forging on the material with a die and a punch, and obtaining a complete product by applying ironing on the impact formed product.

Abstract: A plasma display apparatus is provided. A plasma display apparatus according to an embodiment of the present invention may comprise a Plasma Display Panel (PDP) comprising sustain electrodes commonly connected through a conductive connection pad, two or more Z sustain boards for driving the sustain electrodes, and a current communication unit for electrically connecting the Z sustain boards and communicating current between the Z sustain boards.

Abstract: Disclosed is an airbag door structure for vehicular passenger seats having an airbag door and a crash pad integrally formed, preferably in a dual injection molding process using different materials to hide tear lines of the airbag door and crash pad for aesthetic appearance. The airbag door structure can have a reduced number of components to decrease weight and save cost and uses a material undergoing sever change in physical properties as temperature varies for the crash pad and a ductile material undergoing little change as temperature varies for the airbag door so that the airbag can expand stably at various external temperatures without being easily tom off by impact from outside the door.

Abstract: A plasma display apparatus comprises a plasma display panel that comprises an electrode; a sustain driver that supplies a sustain signal to the electrode and that comprises a first and second switching elements for supplying the sustain signal; and a first and second gate drivers that drives each of the first and second switching elements, wherein the first gate driver receives a driving voltage for driving the first switching element from a driving voltage source of the first gate driver, the second gate driver comprises a driving voltage source that supplies a driving voltage for driving the second switching element, and an auxiliary voltage for assisting the driving voltage is supplied from the outside of the second gate driver so that the second switching element is driven by the driving voltage.

Abstract: Refrigerator for managing food by using RFID including a plurality of storage portions divided in the refrigerator for storing food, RFID devices each having storage information of each kind of food stored in the storage portions, and controller for reading the storage information and setting up the storage portion which maintains a storage condition suitable to the storage information read thus, thereby permitting easy storage of food in a storage portion having the storage condition by using the RFID device.

Abstract: A plasma display apparatus and a method of driving the plasma display apparatus are disclosed. The plasma display apparatus includes a plasma display panel including a scan electrode, a sustain voltage source, an inductor, an energy supply/recovery capacitor, and a maintenance capacitor. The inductor and the energy supply/recovery capacitor form a current path for supplying/recovering a sustain voltage to/from the plasma display panel, and for forming a current path for supplying/recovering one half of the sustain voltage to/from the plasma display panel. The maintenance capacitor forms a current path for maintaining a voltage of the plasma display panel at one half of the sustain voltage.

Abstract: A plasma display apparatus which can increase driving efficiency of a plasma display panel and a driving method thereof are disclosed. The plasma display apparatus includes a plasma display panel comprising a plurality of electrodes, a driver for driving the plurality of electrodes, and a sustain pulse controller for controlling the driver and for adjusting at least one of an ER (energy recovery)-Up time period and an ER (energy recovery)-Down time period of a sustain pulse supplied to the plurality of electrodes depending on an average picture level (APL) in a sustain period.

Abstract: Provided is a plasma display apparatus. The apparatus comprises: a plasma display panel; an energy storing unit supplying or recovering energy; an energy supply controller forming a path for supplying the energy from the energy storing unit; a first resonance unit supplying the energy supplied from the energy supply controller, to the plasma display panel through resonance; a second resonance unit forming the resonance together with the first resonance unit, and recovering the energy from the plasma display panel to the energy storing unit; and an energy recovery controller positioned between the first resonance unit and the second resonance unit, and forming a path for recovering the energy.

Abstract: A cup adapter inserted in a cup holder of an automobile to increase cup retaining force. The cup adapter comprises a bottom wall adapted to be in close contact with a bottom surface of the cup holder; and a cylindrical side wall having plural convex guide portions, wherein the plural convex guide portions are inwardly projected and each have a concave recess in the external sides thereof, and plural frictional projections are formed in the concave recess, the frictional projections being horizontally projected.

Abstract: A knee bolster structure of a vehicle, capable of effectively protecting knees of a driver in an accident, has two bracket members triangular shapes a lower end of the first knee bolster bracket configured to move coupled to the member is coupled to the cowl cross bar and the lower end of the second knee bolster bracket member is coupled to the center support bracket, which connected to the cowl cross bar so that the second knee bolster bracket is prevented from interfering with the key set. The knee bolster structure has upper and lower knee contact portions formed at front parts of the first and second knee bolster bracket members, so the knee bolster structure is used corresponding to position variation of knees of the driver.

Abstract: A plasma display apparatus, more particularly to a plasma display apparatus for applying a negative sustain waveform while being driven and a method of driving the same are provided. The plasma display apparatus includes a plasma display panel in which a plurality of electrodes including scan electrodes and sustain electrodes are formed, driving parts for driving the plurality of electrodes, and a driving pulse controlling part for controlling the driving parts so that a scan reference waveform of a voltage level no more than a ground voltage level and a negative scan waveform of a voltage level lower than the voltage level of the scan reference waveform and higher than the voltage level of the negative sustain waveform are applied to the scan electrodes in an address period and that a negative sustain waveform is alternately applied to the scan electrodes and the sustain electrodes in a sustain period.

Abstract: The present invention relates to a plasma display panel, and more particularly, to an apparatus and method for driving a plasma display panel. An apparatus for driving a plasma display panel includes an energy recovery circuit having a first inductor, which is included in a path along which energy is supplied to the panel and resonate with the panel, and a second inductor included in a second path along which energy is recovered from the panel together with the first inductor. Accordingly, a plurality of inductors is serially connected so that an energy supply path and an energy recovery path are separated. It is thus possible to increase driving efficiency without changing a control signal. Further, it is possible to prevent an unnecessary resonance phenomenon by further including a clamping unit.

Abstract: A method for designing a PAB door for an invisible airbag provided to a passenger-side seat of a vehicle includes defining levels of a noise factor depending on a process condition of laser scoring for forming a tearseam on an inner surface of an instrument panel. Control factors and levels of each control factor are defined that affect stress distribution and deformation rate of the tearseam. A combination is arranged that includes levels of the control factors according to an experimental design, inputting each noise factor to each combination and measuring a minimum impulse ‘X’ that is able to tear the tearseam, and a maximum impulse ‘Z’ that is unable to tear the tearseam in the case of a head impact. The level of each control factor is selected based on the measured minimum impulse ‘X’ and the measured maximum impulse ‘Z’.