Abstract: There are provided a hydrodynamic bearing assembly and a spindle motor including the same. The hydrodynamic bearing assembly includes: a sleeve including a shaft hole to have a shaft rotatably installed therein; and a cover member covering the shaft hole at a lower portion of the shaft hole in an axial direction, wherein an inner surface of the sleeve is provided with depression parts depressed in an outer diameter direction between upper and lower portions of the sleeve and portions in which radial bearings are formed, such that the portions in which the radial bearings are formed are provided with bearing closure adhesion parts allowing the portions in which the radial bearings are formed to be closer to the shaft than portions other than the portions in which the radial bearings are formed.

Abstract: The present invention relates to an energy storage apparatus capable of preventing performance degradation by reducing resistance during movement of charges between layers in a multilayer capacitor with very high capacity includes: a plurality of cathode layers for storing positive charges; a plurality of anode layers for storing negative charges; a plurality of separation layers for electrically separating the cathode layers and the anode layers; a cathode hole for introducing the positive charge into the cathode layer from the outside or discharging the positive charge from the cathode layer to the outside; an anode hole for introducing the negative charge into the anode layer from the outside or discharging the negative charge from the anode layer to the outside; a cathode conducting unit for moving the positive charge; and an anode conducting unit for moving the negative charge.

Abstract: Disclosed herein is a pressure valve for an energy storage device. The energy storage device according to an exemplary embodiment of the present invention includes: a valve body provided with a vent guide for communicating a gas vent of the energy storage device with the outside; and an elastic body interposed between the valve body and the gas vent to elastically support the valve body to an inner side of the gas vent to move the valve body to an outer side of the gas vent when a gas pressure in the gas vent rises, thereby communicating the vent guide with the outside and recover the valve body when the gas pressure in the gas vent falls, thereby blocking the vent guide from the outside.

Abstract: Disclosed herein is an air valve for an energy storage device, including: a valve body mounted in a gas vent of an energy storage device and having a passage for discharging gases within the gas vent to the outside; and a plurality of magnets mounted within the passage to apply repulsion force to one another so as to block the gas vent from the outside by the repulsion force and communicate the gas vent with the outside when a gas pressure within the gas vent is larger than the repulsion force, thereby discharging gases. By this configuration, exemplary embodiments of the present invention can configure the air valve with the simple structure capable of smoothly discharging gases generated from the energy storage device while minimizing a volume of the air valve and being semi-permanently used while minimizing a mechanical configuration of the air valve.

Abstract: There is provided a method of forming a plating layer, the method including: forming a seed layer on a substrate; forming a pattern layer on the seed layer, the pattern layer formed of a thermoplastic resin and including openings; forming a plating layer on portions of the seed layer corresponding to the openings; and removing the pattern layer. This method ensures that the plating layer is formed with a sufficient thickness and the substrate, particularly, a ceramic substrate suffers minimal chemical damage during a plating process. Moreover, the plating layer is formed with a more uniform thickness.

Abstract: Provided herein is a plasma display panel. The plasma display panel comprises a front substrate, a rear substrate opposite to the front substrate and having address electrodes formed thereon, a lattice-shaped partition wall formed between the front substrate and the rear substrate, a phosphor applied to a discharge space partitioned by the partition wall, and a plurality of scanning electrodes and common electrodes formed in intersection regions of the partition wall and extending perpendicular to the front substrate. The plasma display panel has a sufficient aperture ratio, and thus has enhanced light emitting efficiency. The scanning electrodes and the common electrodes formed in the intersection regions of the partition walls have a vertical construction, thereby effectively preventing the phosphor from being damaged by the plasma. Discharge uniformly occurs at the outer periphery of the discharge cell, thereby inducing effective excitation of the phosphor.

Abstract: Disclosed herein is a laminated filter with improved stop band attenuation, which is adopted in devices using a radio frequency, such as communication systems and/or broadcasting systems. The laminated filter forms cross capacitive coupling as feeding lines of input lead and/or output lead are coupled to a resonator pattern, and enhances an attenuation characteristic of stop band. Also, the laminated filter is minimized if feeding lines of the input lead and output lead are aligned in different layers, and the positions of the attenuation poles are easily controlled by adjusting the feeding line length.

Abstract: Disclosed herein is an array type noise reduction filter. The array type noise reduction filter has a plurality of noise reduction filters horizontally arranged within a single chip. A plurality of noise reduction filters each have a conductor layer and an inductance portion. The conductor layer is comprised of a ground portion arranged at approximately the center portion within the chip, and at least one capacitance portion arranged at at least one position over or under the ground portion. The inductance portion is arranged over or under the conductor layer. An inductance portion of another noise reduction filter adjacent to a noise reduction filter having an inductance portion arranged over the conductor layer is arranged under the conductor layer.