摘要:
Disclosed herein is a vertical type nitride semiconductor light emitting diode. The nitride semiconductor light emitting diode comprises an n-type nitride semiconductor layer, an active layer formed under the n-type nitride semiconductor layer, a p-type nitride semiconductor layer formed under the active layer, and an n-side electrode which comprises a bonding pad formed adjacent to an edge of an upper surface of the n-type nitride semiconductor layer and at least one extended electrode formed in a band from the bonding pad. The bonding pad of the n-side electrode is formed adjacent to the edge of the upper surface of the n-type nitride semiconductor layer acting as a light emitting surface, thereby preventing a wire from shielding light emitted from the active layer. The extended electrode can be formed in various shapes, and prevents concentration of current density, thereby ensuring effective distribution of the current density.
摘要:
In a memory device having an open bit line architecture for improving repairability and a method of repairing the memory device, redundant memory cells used to repair defective cells are included even in first and second edge sub-arrays that are arranged at the edges of a memory array. Further, memory cells connected to some of the bit lines in a normal sub-array can be replaced with redundant memory cells included in the first edge sub-array, and memory cells connected to the remaining bit lines can be replaced with redundant memory cells included in the second edge sub-array. Therefore, in the memory device having an open bit line architecture according to the present invention, if all of the redundant memory cells included in normal sub-arrays have been exhausted through replacement, defective cells can be repaired using the redundant memory cells included in the edge sub-arrays. Therefore, the memory device and method of repairing the memory device according to the present invention are advantageous in that they can remarkably improve repairability.
摘要:
Disclosed is a method for preparing a polyglutarimide by reacting an acrylic resin with an imidizing agent. The method uses a superficial fluid, preferably supercritical carbon dioxide’ to remove unreacted materials and by-products, and thus can provide a polyglutarimide having excellent optical properties.
摘要:
A power-up detection circuit which operates in a stable way regardless of variation in PVT. The power-up detection circuit includes a bias circuit that generates a bias voltage in response to an external voltage, and a detection circuit that generates a detection signal in response to the bias voltage. The response speed of the bias circuit to the external voltage and the response speed of the detection circuit to the bias voltage vary depending upon process, voltage and temperature (PVT). Accordingly, the power-up detection circuit and semiconductor device including the same can operate in a stable manner regardless of variation in PVT.
摘要:
A method for assembling a clip for a mobile phone retainer having a slider connection, the clip including a top plate and a bottom plate including fitting a clip retaining member into a through hole formed at the center of the bottom plate of the clip, fitting insertion protrusions of a slider plate to corresponding insertion holes of the clip retaining member, welding the slider and clip retaining member together while the insertion protrusions are fitted into the insertion holes, and connecting the top plate of the clip to the bottom plate using a hinge.
摘要:
A key sensing apparatus in a mobile station comprises a keypad comprising a plurality of keys, and a key interrupt block operatively coupled to the keypad, adapted to receive a key interrupt value from the keypad. The key sensing apparatus also comprises a key bit detection unit operatively coupled to the keypad, adapted to receive a voltage value from the keypad. The key sensing apparatus also comprises a processing unit operatively coupled to the key interrupt block and the key bit detection unit, adapted to sense the voltage value in response to receipt of the key interrupt value by the key interrupt block. The key sensing apparatus may further compare the voltage value against stored key value in a key value table to identify a depressed key. The voltage value may be a binary value having a set bit length.
摘要:
A washing machine designed to uniformly and rapidly supply wash water into a drum through a drive shaft. The washing machine comprises a cabinet, a tub supported in the cabinet, a drum rotatably disposed within the tub for containing laundry, a spider mounted to the drum, a drive shaft connected to the spider to rotate the drum, at least one lifter mounted on an inner surface of the drum, and a water supply path formed to allow wash water to be supplied into the drum after passing through the drive shaft, the spider, the drum and the lifter. After sequentially passing through the drive shaft, the spider, the drum and the lifter, the wash water is then injected into the drum from the lifter, so that the wash water is rapidly and uniformly supplied to laundry, thereby enhancing washing and rinsing performance.
摘要:
Disclosed is a lithium secondary battery comprising a cathode (C), an anode (A), a separator and an electrolyte, wherein the battery has a weight ratio (A/C) of anode active material (A) to cathode active material (C) per unit area of each electrode of between 0.44 and 0.70, and shows a charge cut-off voltage of between 4.35V and 4.6V. The high-voltage lithium secondary battery satisfies capacity balance by controlling the weight ratio (A/C) of anode active material (A) to cathode active material (C) per unit area of each electrode. Therefore, it is possible to significantly increase the available capacity and average discharge voltage of a battery using a lithium/cobalt-based cathode active material, which shows an available capacity of about 50% in a conventional 4.2V-battery. Additionally, it is possible to significantly improve battery safety under overcharge conditions, and thus to provide a high-voltage and high-capacity lithium secondary battery having excellent safety and long service life.
摘要:
A driving unit for a washing machine, and method for controlling the same. The driving unit includes a bearing housing fixedly secured to an outer tub. A motor is mounted on the bearing housing. A ring gear shaft is rotatably mounted to the bearing housing and is coupled to an inner tub. A carrier shaft is rotatably mounted in the ring gear shaft, with a driving shaft rotatably mounted in the carrier shaft. The driving shaft is coupled to the motor. A reduction gear is positioned between the ring gear shaft and the carrier shaft to reduce a speed of the ring gear shaft. A one directional holding device that holds the carrier shaft when the driving shaft rotates in a first direction, and holds two of the carrier shaft, the ring gear shaft, and the driving shaft when the driving shaft rotates in a second direction.
摘要:
A photosensitive resin composition includes: a copolymer of an unsaturated carboxylic acid and a compound with unsaturated ethylenic bonds; an acrylate multi-functional monomer; a phenolic compound; a photopolymerization initiator; and an organic solvent. The photosensitive resin composition according to the present invention has superior resolution and development property because of enlarged solubility differentiation between exposed and unexposed region. The photosensitive resin composition can be effectively used for a transparent protective layer, an insulating layer, a passivation layer, a patterned spacer, etc., for LCDs.