Abstract: According to one embodiment, a disk storage apparatus includes a disk, a detector, and a controller. The disk includes a first recording area for recording with a first track density, and a second recording area for recording with a second track density lower than the first track density. The detector is configured to detect a variation of an outside environment. The controller is configured to select a nonvolatile memory or the second recording area as a storage destination of write data transferred from a host, based on a content of the variation of the outside environment detected by the detector, and a state of capability or incapability of storage of the nonvolatile memory.

Abstract: There is provided a spindle motor including: a sleeve fixedly installed on the base member and having a circulation hole formed therein; a shaft rotatably inserted into a shaft hole of the sleeve; a rotor hub fixedly installed on an upper end portion of the shaft; and a thrust member installed in an installation groove of the sleeve and forming a connection part while being installed in the installation groove, the connection part being connected to the circulation hole, wherein the connection part is formed by the sleeve and the rotor hub and connects a sealing part in which a liquid-vapor interface is disposed and the circulation hole to each other, and an upper and lower radial dynamic grooves allowing a lubricating fluid to move from a lower end portion of the shaft toward the upper end portion thereof during rotation of the shaft.

Abstract: A driver circuit includes a first current source configured to sink part of the current from a power supply through a load and a second current source configured to sink part of the current from the power supply to a return path, bypassing the load, so that the current through the load is the difference between the current from the power supply and the current through the second current source.

Abstract: A hard drive gimbal trace circuit includes: a stainless steel gimbal strut (SGST) configured to support a transducer and nullify a natural pitch angle of a flexure from mechanical-coarse adjustment of the SGST; traces forming a trace structure, and being plastically deformed at a high strain region from the mechanical-coarse adjustment of the SGST; and a first protrusion and a second protrusion being at least partially disposed under the high strain region. The SGST has an edge which is disposed on the transducer side to be spaced apart from the traces in the high strain region and extends substantially parallel to the traces. The first protrusion and the second protrusion extend from the edge in an orthogonal direction to an extending direction of the traces and across the traces, and are disposed side by side in the extending direction of the traces.

Abstract: An electrical safety system with an integrated timer is disclosed. The electrical safety system may have an input line connected to an output via one or more communication paths. The electrical safety system may also have a ground fault circuit interrupter module including a sensor coil for monitoring current passing from the input line to the electrical load and producing a current signal and a ground fault circuit interrupter circuit. Further, the electrical safety system may have one or more switches for opening or closing the one or more communication paths between the input line and the output, and a solenoid for operating the one or more switches. Additionally, the electrical safety system may have a timer module comprising a timer circuit configured to generate a timer signal and a selector switch in electrical communication with the timer circuit and a visual display.

Abstract: A Ship Board Ground Monitor System measures an antistatic bond between a ship and a loading-off-loading facility during operation and an earth ground while in the process of loading or unloading flammable materials. The system ensures that a maximum adjustable, preset resistance between the ship transport and safety ground is not exceeded. Should this resistance be exceeded, the control apparatus within the system will activate audible and visual annunciation and provide a contact output, which may be used to disable pumping systems.

Abstract: The present invention relates to an electric appliance (100) comprising an electric load (225), and a printed circuit board assembly (115) for electronically managing the electric appliance (100); the printed circuit board assembly comprises a slave printed circuit board (220s) operatively associated with the electric load (225) for driving it, and a master printed circuit board (220m) operatively associated with the slave printed circuit board (220s) and arranged for receiving an electric power supply (L, N) of the electric appliance and for selectively providing/stopping the provision of an operative electric power to the slave printed circuit board (220s) for energization/de-energization thereof.

Abstract: Methods may be provided to control an electro-permanent magnetic device powered from an AC mains power source provided through first and second power lines of a controller, wherein a first switch is provided on the first power line between the AC mains power source and the electro-permanent magnetic device and a second switch is provided on the second power line between the AC main power source and the electro-permanent magnetic device. In particular, a sequence of switching pulses may be transmitted through the first and second switches to change a magnetic state of the electro-permanent magnetic device. Related controllers are also discussed.

Abstract: An amplitude limiter circuit includes an inductor and a shunt circuit. The inductor has a first terminal connected to an input node. The shunt circuit is connected to a second terminal of the inductor and also is connected to a low impedance node. If an overvoltage condition forms on the input node, the shunt circuit forms an overvoltage current path from the input node, through the inductor, through the shunt circuit and to low impedance node.

Abstract: A protection circuit comprises first and second input terminals to which a power source voltage for a protected load circuit can be applied. A first transistor connected between the input terminals. The first transistor has a gate/base electrode connected to a current path electrode through a resistor. A low-pass filter is connected in parallel with the first transistor between the input terminals. A second transistor connected in parallel with the resistor, and having a control electrode connected to an output terminal of the low-pass filter. Zener diodes may be optionally included to provide overvoltage protection. In some embodiments, the low-pass filter may comprise a series-connected resistor and capacitor.

Abstract: The inventive concept shows the embodiment of t-switch which is a MIT 3-terminal device based on a Hole-driven MIT theory and a technology for removing an ESD noise signal which is one of applications of the t-switch. The t-switch includes three terminals of Inlet, Outlet and Control, and a metal-insulator transition (MIT) occurs at an Outlet layer by a current flowing through the Control terminal. In the t-switch, a high resistor is connected to the Control terminal and thereby an ESD noise signal of high voltage flows through the Inlet-Outlet without damaging the device.

Abstract: The present disclosure discloses a battery protection circuit and a method thereof for protecting a battery pack. The battery protection circuit comprises a hardware protection circuit, a software protection circuit and a current detecting circuit. When the battery pack is not in the active status, the hardware protection circuit is used to execute a protective operation; and when the battery pack is in the active status, the software protection circuit is used to execute the protective operation. Furthermore, the hardware protection circuit is electrically connected to the software protection circuit to detect a status of the software protection circuit. When the battery pack is in the active status, the software protection circuit is used to execute the protective operation, and when the software protection circuit is in an abnormal status, the hardware protection circuit is used instead to execute the protective operation.

Abstract: An electronic fuse apparatus is connected between a power side and a system side. The electronic fuse apparatus mainly includes an electronic fuse, a short-circuit protection switch, a current-sensing module, and a digital control module. The current-sensing module detects an operating current which flows from the power side to the system side. The digital control module generates a control signal to control the electronic fuse. When the current-sensing module detects that the operating current is over-current, the digital control module generates the high-level control signal to turn off the electronic fuse, thus providing an over-current protection. When a short-circuit fault occurs at the system side, the short-circuit protection switch is turned on to turn off the electronic fuse, thus providing a short-circuit protection.

Abstract: A battery management system for a vehicle having an electrically powered motor that is powered by a plurality of battery cells includes an electrical system for providing voltage and current from the battery cells to an electrical motor. A control is operable to at least one of (a) cause fuses of the electrical system to be the weakest link in the electrical system only during a failure event, (b) disconnect the battery cells from the battery management system only during a failure event, (c) separate the driving of balancing resistors into first and second stages, with the first stage comprising cell balancing control and the second stage comprising cell balancing with reverse voltage protection and (d) provide single stage reverse voltage protection to limit or effectively eliminate an electrical conduction path through a low impedance balancing circuit.

Abstract: A circuit and method of over-voltage protection is provided to prevent the power supply to provide an exorbitant voltage to the electronic cigarette, the electronic cigarette case or the electronic cigarette charger; said circuit comprises a DC input terminal, a DC output terminal, a voltage sampling circuit, a switch control circuit and a switch circuit; the voltage sampling circuit is electrically connected with the DC input terminal and the switch control circuit respectively; the switch control circuit is electrically connected with the switch circuit; the switch circuit is electrically connected with the DC input terminal, the DC output terminal and the switch control circuit respectively. When implementing the present invention, an exorbitant voltage can be prevented to provide to the electronic cigarette, the electronic cigarette case or the electronic cigarette charger by the power supply, thus being protected from over-voltage as the exorbitant voltage may damage the products.

Abstract: An over-current protection device comprises a PTC device, first and second electrodes, a first welding metal plate and a second welding metal plate. The PTC device comprises a first conductive layer, at second conductive layer and a PTC polymeric material layer laminated therebetween. The first electrode electrically connects to the first conductive layer. The second electrode electrically connects to the second conductive layer and is separated from the first electrode. The first welding metal plate is formed on an upper surface of the device and connects to the first electrode. The second welding metal plate is formed on the upper surface or a lower surface of the device and connects to the second electrode. The first and second welding metal plates are placed at two opposite ends of the strip-like structure, and each of them has a thickness sufficient to withstand spot-welding without significant resultant damage to the PTC device.

Abstract: A breaker circuit is provided with failure self-detection functions. The circuit may comprise line and neutral power supply lines, line and neutral power output lines, a test magnetic coil, a neutral magnetic coil, a first electronic switch, and a first rectifier DC power unit comprising a bridge rectifier and a filter circuit. A leakage signal detection circuit may comprise a leakage signal amplification integrated circuit as its core component. An electromagnetic tripping mechanism may work under the control of the leakage signal detection circuit. The electromagnetic tripping mechanism may comprise an electromagnetic coil. A self-detection control circuit may comprise a second rectifier DC power unit, an analog leakage circuit comprising a series branch circuit comprising a first current-limiting resistor and a second electronic switch, and a micro-processing circuit composed of a microcontroller as its core component. The circuit may also comprise a self-detection alarming circuit.

Abstract: An electrical system includes a first circuit breaker that digitally senses a first current to a first load, and a second circuit breaker that digitally senses a second current to a second load and provides an output to the first circuit breaker. The first circuit breaker determines an average current based upon the first sensed current and the output from the second circuit breaker, and the first and second circuit breakers terminate power to the first and second loads if the average current is greater than a threshold value.

Abstract: An electronic protection component comprises an outer case bounding an outer cavity therein; a varistor with a first varistor lead connected to a first varistor electrode and a second varistor lead connected to a second varistor electrode, wherein the varistor is placed in the outer cavity; a low melting point alloy wire with a first thermal fuse lead in one end and a second thermal fuse lead in the other end; wherein either the first thermal fuse lead or the second fuse lead is connected to either the first varistor electrode or the second varistor electrode therefore forming a lead junction.

Abstract: An electronic control device has a resin case to which a circuit board having a terminal contact pad is fixed; a hydraulic unit having an electromagnetic solenoid which controls a hydraulic circuit and a pressure sensor which detects a pressure of the hydraulic circuit; a motor post having a current-carrying member which electrically connects a motor and the circuit board and extending from the resin case and inserted in the hydraulic unit; and a fixing member which is provided at the resin case and holds an outer periphery of the pressure sensor. Positioning between the pressure sensor and the terminal contact pad of the circuit board is made by the motor post inserted in the hydraulic unit and fixation of the pressure sensor by the fixing member.

Abstract: A member 20 for semiconductor manufacturing equipment includes a base portion 22 and a ceramic member 30 formed on the base portion 22. The ceramic member 30 of the present invention includes a ceramic base 32 containing at least one of magnesium oxide, a magnesium oxide solid solution in which a predetermined component is dissolved in magnesium oxide, and zirconium oxide; and an electrode 34 which is arranged on part of the ceramic base 32 and which contains a ruthenium-aluminum alloy as an electrode component. The ceramic member 30 is a plate-like member and has a structure in which the electrode 34 is embedded therein. The electrode 34 is connected to a feeding member 26 inserted from the underside of the ceramic member 30. Electric power is supplied from the feeding member 26.

Abstract: A capacitance element body 2 is configured by two or more capacitors, the capacitors being formed of a dielectric layer 3 and at least three internal electrodes, the internal electrodes each being laminated via the dielectric layer 3 and arranged to allow a center of gravity of an electrode body forming electrostatic capacitance to be arranged on a straight line in a lamination direction. In the capacitance element body 2, said two or more capacitors are serially connected in a lamination direction of the internal electrodes. Furthermore, external terminals 20 to 23, each being electrically connected to an electrode body forming electrostatic capacitance, are formed in side surfaces of the capacitance element body 2.

Abstract: A tunable capacitor includes a first electrode and a second electrode, each being formed of a conductive material. The tunable capacitor further includes a third electrode between the first electrode and the second electrode, and a dielectric material interposed between the first electrode and the third electrode, and between the second electrode and the third electrode. The third electrode is movable relative to the first electrode and the second electrode by a stepper motor, to adjust and tune a capacitance of the tunable capacitor.

Abstract: There are provided a multilayer ceramic electronic component and a manufacturing method thereof, such that a high capacitance multilayer ceramic electronic component having excellent reliability through the suppression of crack generation due to a step portion and an increase in an overlapped area may be provided.

Abstract: A low-height multilayer ceramic capacitor offering excellent flexure strength meets the condition “t11c<t12b,” where t11c represents the thickness of each protective dielectric layer provided on respective top and bottom sides of a dielectric chip, and t12b represents the thickness of a wraparound part of each external electrode provided at least part of both top and bottom faces of the dielectric chip.

Abstract: A laminated ceramic capacitor having a laminated body composed of a plurality of ceramic layers for inner layers; a plurality of internal electrodes at the interfaces between the plurality of ceramic layers for inner layers; and a plurality of ceramic layers for outer layers, provided on the top and bottom so as to sandwich the plurality of ceramic layers for inner layers. The ceramic layers for inner layers are composed of a material containing a multiple oxide including an alkaline-earth metal. The ceramic layers for outer layers respectively have TiO2 ceramic layers containing TiO2 as their main constituent for certain layers including the outermost layers, and multiple oxide ceramic layers containing a multiple oxide including an alkaline-earth metal for the other layers.

Abstract: A hard start capacitor replacement unit has a plurality of capacitors in a container sized to fit in existing hard start capacitor space. The capacitors are 4 metallized film capacitors wound in a single cylindrical capacitive element. The container has a common terminal and capacitors value terminals for the plurality of capacitors, which may be connected singly or in combination to provide a selected capacitance. An electronic or other relay connects the selected capacitance in parallel with a motor run capacitor. The hard start capacitor replacement unit is thereby adapted to replace a wide variety of hard start capacitors.

Abstract: A multi-layer ceramic capacitor is constituted by ceramic dielectric layers alternately laminated with conductive layers, wherein the ceramic dielectric layers are sintered in such a way that core-shell grains having a core-shell structure are mixed with uniform solid-solution grains resulting from uniform progression of the solid solution process. Such multi-layer ceramic capacitor is characterized in that the area ratio of the core-shell grains to all sintered grains constituting the ceramic dielectric layer is 5 to 15% and that the average grain size of all sintered grains including the core-shell grains and uniform solid-solution grains is 0.3 to 0.5 ?m.

Abstract: A solid electrolytic capacitor that includes: a laminated body having a plurality of capacitor elements stacked to have principal surfaces thereof overlapped with each other. The capacitor elements each include a valve-action metallic substrate having two principal surfaces opposed to each other, a dielectric oxide film covering a surface of the valve-action metallic substrate, and a cathode layer covering a surface of the dielectric oxide film. The laminated body has two principal surfaces and more than one side surface, and has at least one of the side surfaces with the valve-action metallic substrates exposed. An anode terminal is electrically connected to the side surface of the laminated body having the valve-action metallic substrates exposed therefrom, and the cathode layers and the anode terminal are insulated with insulators interposed therebetween, the insulators being obtained from the cathode layers.

Abstract: A process for producing anodes includes providing a foil comprising tantalum or niobium. A surface of the foil is oxidized so as to form oxides on the foil surface. The foil is heated so that the oxides formed on the foil surface diffuse into the foil. A paste comprising a powder selected from the group consisting of a tantalum powder, a niobium powder, a niobium oxide powder and mixtures thereof is applied to the foil. The foil with the applied paste is sintered.

Abstract: A cover window for a display device includes a display area and a non-display area, the cover window including a frame member disposed corresponding to the non-display area, and a protective member disposed on the frame member corresponding to the display area and the non-display area.

Abstract: A stackable electronic device with latching bumper includes a housing, an electrical connector, a latching mechanism having a linking module, a latching module and a button. The housing has a bottom board, a side board formed with a button hole, and a bumper disposed on the bottom board formed with a latching hole. The linking module is disposed on an inner side of the side board, and has a first end extended into the button hole and a second end extended into the bumper. The latching module is movably disposed in the bumper between a locking position and an unlocking position. The second end is connected to the latching module. The button can be pressed for driving the first end to move the second end corresponding to the locking position and the unlocking position. The present disclosure also provides a stackable electronic device system.

Abstract: An electronic device includes a sensor board connected to a fingerprint sensor, a switch mounted at a side of the sensor board opposite the finger print sensor, a movable portion supporting the sensor board, the fingerprint sensor and the switch, a cover member provided beneath the switch and configured to depress the switch through movement of the movable portion when downward pressure is placed onto the fingerprint sensor, the cover member overlying an electrical component, the cover member and electrical component being mounted on a control board.

Abstract: An electronic device may have a glass housing structures. The glass housing structures may be used to cover a display and other internal electronic device components. The glass housing structure may have multiple glass pieces that are joined using a glass fusing process. A peripheral glass member may be fused along the edge of a planar glass member to enhance the thickness of the edge. A rounded edge feature may be formed by machining the thickened edge. Raised fused glass features may surround openings in the planar glass member. Multiple planar glass members may be fused together to form a five-sided box in which electronic components may be mounted. Raised support structure ribs may be formed by fusing glass structures to a planar glass member. Opaque masking material and colored glass may be used to create portions of the glass housing structures that hide internal device components from view.

Abstract: An electrical plug and receptacle relying on magnetic force from an electromagnet to maintain contact are disclosed. The plug and receptacle can be used as part of a power adapter for connecting an electronic device, such as a laptop computer, to a power supply. The plug includes electrical contacts, which are preferably biased toward corresponding contacts on the receptacle. The plug and receptacle each have a magnetic element. The magnetic element on one of the plug or receptacle can be a magnet or ferromagnetic material. The magnetic element on the other of the plug or receptacle is an electromagnet. When the plug and receptacle are brought into proximity, the magnetic attraction between the electromagnet magnet and its complement, whether another magnet or a ferromagnetic material, maintains the contacts in an electrically conductive relationship.

Abstract: A transmitter and a method for mounting a transmitter on a panel, wherein the panel is a door or wall of an electrical cabinet, a display panel, a control panel or a diaphragm, wherein the transmitter includes a display module and a computer module, wherein the display module includes at least a first securement means and a cable, and the display module is connectable via the cable with the computer module. The method comprises the steps of: drilling at least a first hole in the panel, wherein the first hole is less than the area of the display module lying against the panel bringing the cable from a first side of the panel through the first hole to a second side of the panel securing the display module to the panel using a second securement means complementary to the first securement means securing the computer module to the second side, and connecting the computer module with the display module via the cable.

Abstract: Systems are disclosed that relate to modular furniture capable of providing conventional desk functions as well as integrated electronic components which house, store, and operate electronic devices, such as computers and associated devices. Furniture components of a traditional office are adapted to house a plurality of electronic components of a traditional computer system. Connectors, expansion slots, networking capabilities, and other storage units are provided within the furniture components enabling several electronic devices to be installed within the furniture components and communicate with each other, integrating a fully functional computer system into a classroom or office desk. The disclosed modular furniture systems provide multiple resources and functions in a small footprint and are useable in a variety of school, personal and work settings.

Abstract: Particular embodiments described herein provide for an electronic device, such as a notebook computer or laptop, that includes a circuit board coupled to a plurality of electronic components (which includes any type of components, elements, circuitry, etc.). The electronic device may also include a hinge assembly to secure a top portion of the electronic device to an accessory. The hinge assembly is to allow a rotation of the top portion in relation to the accessory. The hinge assembly may include a plurality of discs to receive a plurality of segments of the accessory as the hinge assembly engages to secure the top portion of the electronic device to the accessory.

Abstract: A cover for a portable terminal having a fixing part for fixing the portable terminal and a folder rotating at the fixing part to open and close the portable terminal. The cover includes an input unit and/or a display unit, and a charging unit. The input unit inputs data to the portable terminal The display unit displays data from the portable terminal. The input unit and display unit are constructed in the folder. The charging unit is constructed in at least one of the fixing part and folder, and supplies power to the portable terminal generated using a solar cell.

Abstract: A housing for a slate tablet computer is composed of a frame component and an input component. The frame component is removably attached to the input component. A support mechanism attached to the input component, wherein the support mechanism extends from the input component to oppose inadvertent rotating of the slate tablet computer housing around a hinge connecting the frame component and the input component. In an alternate implementation, a support mechanism attached to the frame component is used to prevent the inadvertent rotating of the slate tablet computer housing around a hinge connecting the frame component and the input component.

Abstract: An automatically-lockable, shock absorbing dock for a portable computer, the dock comprising: a top plate configured to receive a portable computer, said top plate comprising: an automatic locking mechanism for securing the portable computer to said top plate, a set of connectivity ports, and a port replicator configured to connect the portable computer to the set of connectivity ports; and multiple pairs of shock absorbers connected to a bottom surface of said top plate and configured to connect to a target surface, wherein each pair of shock absorbers is coaxially-positioned and connected to opposite sides of said bottom surface, and wherein each shock absorber has an essentially equal resiliency in its x, y and z axes.

Abstract: A system including a chassis (102), a vent (130,132) in the chassis to exchange air from outside the chassis with air inside the chassis, a temperature sensor (114) inside the chassis, a power supply (106) to supply power to the system, and a controller (120) coupled to the temperature sensor to perform an airflow block response action (121) if the controller determines the temperature from the temperature sensor is higher than a threshold temperature for a level of power being drawn by the system from the power supply.

Abstract: A cooling assembly for cooling server racks includes a server rack enclosure sub-assembly that includes at least one panel member defining a volume for receiving one or more server racks having a front portion and a rear portion, at least one of the panel members is a rear panel member; at least one frame member defines an opening for receiving the rear portion of the server racks to form a hot space between the rear panel member and the combination of the frame member and the rear portion of the server racks; a cooling sub-assembly disposed in thermal communication with the hot space to cool at least one server supported in the server rack and including a chassis receiving at least one heat exchange member for exchanging heat between a refrigerant fluid flowing through the heat exchange member and fluid flowing through the hot space heated by the server.

Abstract: A server cabinet includes a cabinet body and a heat dissipation apparatus attached to one side of the cabinet body. The heat dissipation apparatus includes a thermal conductive film, a heat sink, and a side cover fixed to the cabinet body. The side cover defines an opening for receiving the heat sink. The thermal conductive film is adhered to the side of the cabinet body. The heat sink contacts with the thermal conductive film.

Abstract: Examples are disclosed for a conformal coating molded around power source circuitry, electrical components or at least portions of a display for a computing device. The conformal coating to include embedded microencapsulated thermal energy storage material to absorb heat generated by the electrical components.

Abstract: An apparatus may be used with a notebook, tablet, mobile phone, computer, or other device to provide handles for securely and comfortably holding and manipulating the notebook. The apparatus generally includes a frame, a pair of handles, and a case approximately the size of the notebook. The apparatus may be removably secured to the notebook by gripping edges of the notebook so that the notebook may be manipulated and handled by the handles of the apparatus, and while secured may retain functionality of the notebook. The frame may include a rib for connecting the handles with the case, as well as connecting the handles to each other, and may provide stability and strength to the apparatus. In another aspect, the apparatus may be a unitary structure including a body, one or more handles, and one or more connectors connecting the handles to the body.

Abstract: In a capacitor module, a capacitor, a seal member that seals the capacitor, an electronic element electrically connected to the capacitor, a temperature sensor that measures a temperature around the capacitor, and a wire member electrically connected to the temperature sensor are provided. A holder holds at least the electronic element, the temperature sensor, and the wire member. The holder is fixed to the seal member while the temperature sensor is located between the electronic element and at least part of the capacitor via the seal member.

Abstract: There is provided an electric power conversion system. Bus bars 160 and 161 as heat-producing elements are provided on a circuit board assembly 150, and the circuit board assembly 150 is fixed to a DC-DC converter case 110. The DC-DC converter case 110 is integrated with an inverter 200, and a refrigerant channel 101 is formed therebetween. By bringing newly provided bus bar solder-fixed parts 160c, 160d, 161c, and 161d of those bus bars into contact with a refrigerant channel range 101A, heat generated at the bus bars 160 and 161 is released into a refrigerant via a metal board and the DC-DC converter case 110, respectively.

Abstract: A hand power tool, in particular an angle grinder, includes a drive unit, an electronic unit, and a cooling device configured, at least partially, to cool the drive unit and/or the electronic unit. The cooling device includes at least one cooling unit configured, at least partially, for localized cooling.

Abstract: There are provided a housing capable of evenly distributing stress generated at the time of assembly thereof and a power module having the same. The housing for a power module according to an embodiment of the invention includes: a body part having a space formed therein, the space receiving a module substrate having electronic devices mounted thereon; a plurality of fastening parts protruded from sides of the body part; and a fastening member having a leaf spring form and having both ends coupled to two of the fastening parts, respectively, wherein the fastening member includes: a coupling portion coupled to a fixing member; and elastic portions extending from both edges of the coupling portion to be coupled to the fastening parts and elastically deformed when the coupling portion is fastened to a heat radiating substrate to provide elastic force to the fastening parts.