Abstract: A discharge device and a display panel preparation system based thereon are disclosed. The discharge device includes a conductive contact terminal electrically connected with an electrostatic discharge contactor of a substrate to be processed; and a voltage controller electrically connected to the contact terminal for adjusting a voltage on the contact terminal. The discharge device is able to eliminate (e.g., neutralize) the static electricity on the substrate to be processed.

Abstract: An energy efficient under-cabinet lighting system with a low profile switch mode power supply complying with Class 2 requirements. This power source is enclosed in a container to provide constant current to an array of light emitting diodes LEDs that are characterized by long life and low power usage. The system is designed to replace existing under-cabinet fluorescent lamp fixtures. A diffuser minimizes pixelization. The unit is also equipped with a safe-charge USB port that can safely charge lithium-ion batteries of accessories like tablets and cellphones with no danger of overheating their batteries.

Abstract: An electronic equipment item for an electronic system, comprising a housing, a backplane board, at least one daughterboard and at least one lightning protection board housed in the housing. A connector is fixed to the backplane board and configured to be connected to the rest of the electronic system. For each daughterboard there is provided one lightning protection board. For each lightning protection board, a first port is arranged to connect the lightning protection board to the backplane board, and a second port is arranged to connect the daughterboard to the lightning protection board.

Abstract: A slim card connector is provided. The slim card connector includes a board in which a plurality of openings are arranged at an interval and a plurality of contact terminals provided in the board to be received in the openings, wherein the contact terminals are received in the openings, respectively, when the contact terminals are in contact with a card.

Abstract: Provided is a process of using a microtomic system for the preparation of sections for microscope examination. A cutting edge in the system can cut through a sample block and produce a section one end of which remains attached to the cutting edge. A voltage generator can generate a voltage and apply the voltage between the cutting edge and a section receiver such as a semiconductor chip grid. Through electrostatic force caused by the voltage, another end of the section can anchor to the section receiver. The section is then spread on the receiver. The system is automatable, highly efficient, and does not need liquid to float sample sections, and can therefore maintain the integration of the sample sections.

Abstract: An ESD protection device 1 has a ceramic insulating material 10, first and second discharge electrodes 21 and 22, and a discharge-assisting section 51. The first and second discharge electrodes 21 and 22 are disposed somewhere of the ceramic insulating material 10. The discharge-assisting section 51 is located between the distal end portion of the first discharge electrode 21 and the distal end portion of the second discharge electrode 22. The discharge-assisting section 51 is an electrode configured to reduce the discharge starting voltage between the first discharge electrode 21 and the second discharge electrode 22. The discharge-assisting section 51 is made from a sintered body containing conductive particles and at least one of semiconductor particles and insulating particles. The first and second discharge electrodes contain at least one of the semiconductor material constituting the semiconductor particles and the insulating material constituting the insulating particles.

Abstract: An electronic device comprises a plurality of printed circuit boards having signal GNDs, a metal bar which electrically connects to the respective signal GNDs of the plurality of printed circuit boards, and a card basket which houses the plurality of printed circuit boards and the metal bar and serves as a frame GND. The electronic device also comprises a dielectric between the card basket and the metal bar. The metal bar, the card basket, and the dielectric constitute a noise control capacitor having specific frequency characteristics. By the specific frequency characteristics, the noise control capacitor releases electromagnetic noise occurring in the respective signal GNDs to an outside and shields external noise generated outside.

Abstract: An access control system removes the human element from static protection by detecting a level of static energy when the user attempts to authenticate to the access control system, and when the user's detected level of static energy exceeds a defined threshold, access is denied until the user discharges the static energy. A static energy detection mechanism in a badge reader includes two conductive plates that form a first capacitor, and the space between an electrically conductive badge and one of the conductive plates on the badge reader forms a second capacitor. Using these two capacitors, the level of static energy on the user can be measured by the sum of the voltage across these two capacitors as the user presents the badge to the badge reader. The access control system assures the user is properly grounded before allowing access to an area, equipment, etc.

Abstract: A system and method for electrostatic discharge (ESD) testing devices under test (DUTs) uses an ESD gun attached to a robotic arm to execute ESD testing processes. The system and method also uses a relay station to place a DUT after an ESD testing process is performed on one major side of the DUT so the ESD testing can be performed on the other major side of the DUT.

Abstract: Inside an insulating multilayer substrate 12 in which a plurality of insulating layers are laminated, a cavity portion 13, at least one pair of discharge electrodes 14 and 15, and conductor portions 34 and 35 are formed. The discharge electrodes 14 and 15 are connected to external electrodes 18 and 19 and have facing portions 14a and 15a which are formed along an inner surface of the cavity portion 13 and which face each other with a space provided therebetween. The conductor portions 34 and 35 are formed to cover at least one of facing front ends 14s and 15s of the facing portions 14a and 15a of the discharge electrodes 14 and 15 when viewed in a lamination direction of the insulating layers, a facing direction of the facing portions 14a and 15a, or a direction perpendicular both to the lamination direction and the facing direction.

Abstract: An access control system removes the human element from static protection by detecting a level of static energy when the user attempts to authenticate to the access control system, and when the user's detected level of static energy exceeds a defined threshold, access is denied until the user discharges the static energy. A static energy detection mechanism in a badge reader includes two conductive plates that form a first capacitor, and the space between an electrically conductive badge and one of the conductive plates on the badge reader forms a second capacitor. Using these two capacitors, the level of static energy on the user can be measured by the sum of the voltage across these two capacitors as the user presents the badge to the badge reader. The access control system assures the user is properly grounded before allowing access to an area, equipment, etc.

Abstract: Provided is a microtomic system and process for the preparation of sections for microscope examination. A cutting edge in the system can cut through a sample block and produce a section one end of which remains attached to the cutting edge. A voltage generator can generate a voltage and apply the voltage between the cutting edge and a section receiver such as a semiconductor chip grid. Through electrostatic force caused by the voltage, another end of the section can anchor to the section receiver. The section is then spread on the receiver. The system is automatable, highly efficient, and does not need liquid to float sample sections, and can therefore maintain the integration of the sample sections.

Abstract: An EMI gasket for a cage member of an electrical connector assembly includes a base having a metal body section configured to extend along a wall of the cage member. The EMI gasket includes external spring beams extending from the base. The external spring beams are configured to be received in an opening of a bezel mounted to a front end of the cage member and configured to engage the bezel to electrically connect the EMI gasket to the bezel. The external spring beams extend from base ends at the base to distal ends opposite the base ends. The EMI gasket includes a tie bar at the distal ends connecting the distal ends of the external spring beams together. The tie bar has a flange extending outward therefrom. The flange is configured to stop loading of the bezel onto the front end of the cage member.

Abstract: An image forming apparatus includes: an image carrier; a transfer belt facing a surface of the image carrier, forming a nip serving as a transfer position with the image carrier, and configured to transfer a toner image formed on the surface of the image carrier to a recording paper sheet with a transfer bias of opposite polarity to the surface of the image carrier; a fixing section configured to heat the sheet having the transferred toner image thereon to fix the toner image; and a static eliminator disposed downstream of the transfer position in a direction of conveyance of the sheet and configured to expose a back surface of the sheet opposite to the surface having the transferred toner image thereon to a DC discharge having the same polarity as the transfer bias and directed toward a position where the sheet separates from the transfer belt.

Abstract: The present invention relates to an energy efficient under-cabinet lighting system with a low profile switch mode power supply complying with Class 2 requirements of Underwriters Lab. Northbrook, Ill. This power source is enclosed in a suitable electrical container to provide constant current to the Light Emitting Diodes (LED's) with long life. The system is specially designed to reduce the power consumption as compared to Halogen lamps or Fluorescent lamps without compromising light output. The height of this lighting system is 0.8 inch. A specifically formed transparent diffuser is positioned over the Light Emitting Diodes for uniform illumination over a desired area. These luminaries provide focused light in a desired area and can be coupled or linked by an external interconnect cord. The luminarie provides manual dimming capability.

Abstract: A polarity control unit includes a flag storage unit that stores any one of a first polarity pattern by which a positive direct-current voltage is applied to discharge needles in a first group and a negative direct-current voltage is applied to discharge needles in a second group and a second polarity pattern by which a negative direct-current voltage is applied to the discharge needles in the first group and a positive direct-current voltage is applied to the discharge needles in the second group, a flag update unit that rewrites one flag stored in the flag storage unit to another flag when a power switch is turned on from its off state or is turned off from its on state, and a command unit that commands a polarity pattern corresponding to the flag stored in the flag storage unit to be output from the polarity output unit.

Abstract: A display device includes a display panel that displays images and comprises a an outer frame, a light irradiating part that irradiates light toward a back surface of the display panel, a heat radiating plate that radiates heat generated by the light irradiating part and is grounded, a plurality of protective members provided along the outer frame of the display panel, wherein at least one of the plurality of protective members is an opposing protective member that opposes the heat radiating plate, and a conductive member interposed between and electrically connects the opposing protective member and the heat radiating plate.

Abstract: An ionizer includes a polarity output unit that can selectively output, to a discharge unit, one of a first polarity pattern where the polarity output unit applies a positive direct-current voltage to a first group of discharge needles and applies a negative direct-current voltage to a second group of discharge needles and a second polarity pattern where the polarity output unit applies a negative direct-current voltage to the first group of discharge needles and applies a positive direct-current voltage to the second group of discharge needles and a polarity control unit configured to control the first and second polarity patterns. The polarity control unit includes a current detection unit configured to detect respective direct currents passing through the first group of discharge needles and the second group of discharge needles.

Abstract: A static charge drain system for an aircraft window includes a resistive probe penetrating an outer ply of the aircraft window, a first end of the probe being exposed at an outer surface of the outer ply of the aircraft window. A second end of the probe penetrates an inner surface of the outer ply of the aircraft window. A conductive drain element is disposed between the outer ply of the aircraft window and an inner ply of the aircraft window and is electrically connected between the second end of the probe and a ground point of the aircraft window.

Abstract: An enhanced protective cover includes a top and bottom textile layer and an air permeable, moisture-vapor-transmissive, expanded polytetrafluoroethylene membrane layer located between the two textile layers. The cover exhibits an MVTR rating of at least 4000 g/m2/day. The protective cover also includes a top layer coating or fiber treatment of a nano-ceramic material designed to increase the durability of the cover and increase the resistance to abrasion and wear while also resisting environmental conditions including exposure to solar radiation, temperature and humidity. Alternatively, the upper layer of the protective cover may incorporate ceramic coated fibers or ceramic co-extruded fibers, or carbon nanotubes. The protective cover may also feature a fire resistant application. The top textile layer may also include a permanent, highly breathable and highly durable electro-static discharge feature added to the inside of the layer by laying down a carbon based printed pattern on the inside of the layer.

Abstract: A substrate treatment system comprise a treatment station having a plurality of treatment units provided at multiple tiers in an up-down direction, a cassette mounting table on which a cassette housing a plurality of wafers W is mounted, and a wafer transfer mechanism arranged between the treatment station and the cassette mounting table, wherein a delivery block in which a plurality of delivery units are provided at multiple tiers is provided between the treatment station and the wafer transfer mechanism, the delivery units temporarily housing a wafer to be transferred between the cassette mounting table and the treatment station and a wafer to be transferred between the tiers of the treatment units. The wafer transfer mechanism includes a first transfer arm that transfers a wafer between the cassette mounting table and the delivery block, and a second transfer arm that transfers a wafer between the tiers of the delivery units.

Abstract: A circuit testing device for providing a number of features to assist in testing electrical circuits in a vehicle. The circuit testing device generally includes a housing having a plurality of testing components positioned thereon and therein. The housing generally includes a light source such as an LED for assisting in illuminating dark spaces. The housing also includes a probe for closing connections and an incandescent bulb for testing purposes. A polarity switch is provided to quickly and easily reverse polarity of the probe. A circuit breaker and circuit activation switch are also provided. By utilizing the present invention, circuit integrity as well as electrical testing of various components (both high voltage and low voltage) of a vehicle may be efficiently performed.

Abstract: An apparatus for the absorption, conversion and detection of electromagnetic energy without the need for an earth ground or atmosphere. This apparatus has three major parts: a collector stage, a conversion stage, and an emissive stage. The collection stage, an apparatus that can carry electromagnetic energy from the environment external to the apparatus, is connected electrically to the conversion stage, which comprises one or more layers of a material that can carry an electrical charge, disposed among two or more layers of a material that can carry an electrical charge, which layers are in turn connected electrically to components so as to trap the electromagnetic energy in an electromagnetic field and convert it into electrical energy. Finally, the electrical output of the conversion stage is electrically connected to an emissive stage: comprising an amplification circuit, transducing device or circuit capable of utilizing the energy.

Abstract: A transport and storage container for liquids, having an inner container, an outer casing and an underframe with a bottom for supporting the inner container, and electrically non-conductive support legs. At least one support leg has a shaped sheet metal part to dissipate an electrostatic charge from the inner container. The end of the shaped part closest to the inner container has a container contact section for conductive connection with the bottom or the outer casing, and a standing contact section for conductive connection with the standing surface. The contact conductor section of the shaped part extends inside a cavity in the support leg and the standing contact section has a ground contact surface and a stack contact surface. These contact surfaces are connected by an offset element in the standing contact section and the stack contact surface is arranged above the ground contact surface in a vertical direction.

Abstract: A discharge apparatus for a wind turbine is disclosed that enables electric charge to be discharged between a first and a second part of the wind turbine that are rotatable relative to each other. The discharge apparatus includes a charge transfer unit electrically connected to the first part, and an electrically conductive slideway electrically connected to the second part. The charge transfer unit includes an electrically insulative sliding member that maintains mechanical contact with the slideway, and a spark-gap electrode electrically connected to the first part and that moves in unison with the sliding member over the slideway. The spark-gap electrode and slideway form a spark gap having a spark-gap width controlled by the sliding member. The first and second parts are electrically isolated from each other in the absence of a spark, and discharge occurs by sparks bridging the spark gap.

Abstract: A protective system is provided including a material comprising a first and second surface opposite one another and a thickness, and where the first surface has a low-electrical resistance and the second surface has a high-electrical resistance that is higher than the electrical resistance of the low-electrical resistance surface, and the material conducts charge from the first surface to the second surface through the thickness. This can be provided in a bilayer structure where a first protective layer having a low-resistivity is disposed upon a second protective layer having a high-resistivity. This protective system is particularly useful for dissipating electrical charge, for example as a lightning strike protection system for composite aircraft.

Abstract: A display and an electrostatic discharge protection apparatus are disclosed, wherein the display includes a display module, a flex flat cable, a motherboard, and an electrostatic discharge protection apparatus. The flex flat cable is electrically connected with the display module and the motherboard; the electrostatic discharge protection apparatus is disposed between the flex flat cable and the display module. The electrostatic discharge protection apparatus has an isolation board and at least one isolation pad, the isolation board includes a first surface and a second surface, and at least one part of the first surface is attached to the flex flat cable; the isolation pad comprises a first isolation surface, and the first isolation surface is combined with the second surface.

Abstract: A wireless communication terminal, comprises: a housing and a mainboard assembly configured in said housing, and it further comprises: a USB component in which a heat source module is provided. Said USB component is configured outside the housing, and a straight plug on the USB component is connected with the heat source module, and the heat source module comprises at least a voltage conversion module; the heat source module and the mainboard assembly use an electrical connection structure. The USB component is connected to the housing. The wireless communication terminal provided in the abovementioned technical solution has a small, exquisite and beautiful structure whose surface temperature is lowered, thereby greatly improving the user experience; in addition, the structure provided in the present utility model is simple and easy to be implemented, and it does not additionally increase the cost.

Abstract: A static eliminating device includes a light emitting part and an optical path providing part. The light emitting part emits a static eliminating light to a surface of an image carrier. The optical path providing part includes a reflecting face reflecting the static eliminating light and a radiation end from which the static eliminating light is radiated to the surface of the image carrier. The reflecting face is a matted face.

Abstract: What is disclosed is a modular visualization display panel. The modular visualization display panel includes a first module having at least one surface and a connection to electrical ground. The modular visualization display panel also includes a second module having at least one surface with a plurality of raised contact nodes arranged on the one surface of the second module such that when in contact with the one surface of the first module electrostatic discharge energy is directed over at least one of the raised contact nodes to the one surface of the first module.

Abstract: The present invention relates to a ducting for a fluid transfer pipeline for an aircraft or spacecraft, an aeronautical structure incorporating it and a method for producing this ducting. The ducting (1) comprises a pipe (2) with a thermoplastic or thermoplastic elastomeric layer (4) and a reinforcing layer (5) surmounting it.

Abstract: A computer implemented method, apparatus, and computer usable program code for brokering a charging process of an electric vehicle. In one embodiment, a process extracts event data associated with the charging process from a charge notification in response to receiving the charge notification indicating that the charging process of the electric vehicle is complete. The event data may include, but is not limited to, duration of the charging process, quantity of electricity transferred, or rate at which electricity was transferred during the charging process. The process then identifies, from an energy transaction plan, a set of payees participating in the charging process. Thereafter, the process disburses a payment owed to the set of payees. An amount of the payment is calculated using payment terms in profiles of the set of payees. The payment includes funds from at least one of a payer fund and an incentive fund.

Abstract: An apparatus, system, and method provide electrostatic discharge (ESD) protection in electronic devices. The ESD channels are positioned within the electrical insulation sheet to provide electrical paths to ground having a lower impedance than electrical paths to protected areas covered by the electrical insulation sheet. An ESD follows the path of least resistance safely to ground rather than to a critical component within the electronic device. The ESD channels are openings in a dome contact layer of a keypad where the openings are positioned over one or more ground areas of a printed circuit board (PCB) and the insulating material of the dome contact layer covers areas of the PCB that are protected from ESD. By implementing dedicated GPIO lines, grounded metal domes cover the signal pads in the target discharge area to protected the GPIO lines from ESD. Device components are protected from ESD without additional ports or insulation.

Abstract: A combined measurement device for measuring current and/or voltage of an electrical conductor, comprising a supporting body, a current sensor housed inside the supporting body, and a voltage sensor located at least partially inside the supporting body. A shielding is positioned around the current sensor. The current sensor and the voltage sensor are mutually arranged so as the shielding shields at least partially both the current sensor and the voltage sensor against external electric field disturbances.

Abstract: Provided is an electrostatic discharging apparatus, which comprises a rotation shaft, a transfer roller, and an electrostatic discharging member. The rotation shaft transmits driving force. The transfer roller is disposed on the rotation shaft to transfer a medium. The electrostatic discharging member is disposed on the rotation shaft to rotate together with the rotation shaft, and comprises a plurality of brushes for removing static electricity.

Abstract: A method of removing electrostatic charges from a tray by supplying pressurized ionized air, first along the bottom of the already turned over tray, and then, when unloading the tray, along its side walls or the inner walls of a compartment. A tray made of dielectric material and protected against negative action of the electrostatic field and having a conducting metal insert provided on the inside of the tray. The insert may have different shapes. A device for unloading compartment trays made of a dielectric material and provided with an ionizer disposed horizontally along the linear transporter, in the zone of feeding of the trays with its nozzles turned in the direction of the inside of the bottom of the tray.

Abstract: A circuit arrangement for protection against electrostatic discharges has a diverting structure, which includes a diverting element and a switchable element. The diverting element can be set up to drain off an electrostatic discharge between a first and a second terminal. The switchable element can take a first and a second switching state, where a function of the diverting element can be activated depending on the switching state of the switchable element.

Abstract: A method for optimizing a dechuck sequence, which includes removing a substrate from a lower electrode. The method includes performing an initial analysis to determine if a first set of electrical characteristic data of a plasma formed during the dechuck sequence traverses a threshold values. If so, turning off the inert gas. The method also includes raising the lifter pins slightly from the lower electrode to move the substrate in an upward direction. The method further includes performing a mechanical and electrical analysis, which includes comparing a first set of mechanical data, which includes an amount of force exerted by the lifter pins, against a threshold value. The mechanical and electrical analysis also includes comparing a second set of electrical characteristic data against a threshold value. If both traverse the respective threshold value, removes the substrate from the lower electrode since a substrate-released event has occurred.

Abstract: A system and method for monitoring and mitigating leakage currents. The data acquisition system records data from multiple monitoring locations over extended periods of time to identify stray voltage and/or leakage currents present at the monitoring location. The data is processed to identify trends in the stray voltage and/or leakage currents and to suggest methods for mitigating the same.

Abstract: A lightning protection system is provided, typically for use on an outer surface of an aircraft, which includes the use of a lightning protection sheet that includes an electrically conductive film and at least one patterned, electrically non-conductive discriminator layer.

Abstract: The aircraft includes at least one piece of equipment and a composite material part to which the equipment is connected. It is arranged in such a manner that a fault current circuit of the equipment passes via the part.

Abstract: An electrostatic protection component includes: a body in which a plurality of ceramic substrates is laminated; and a pair of discharge electrodes which are formed within the body and which are spaced to face each other. The discharge electrodes include main body portions extending along a longitudinal direction, and the main body portions include tips in the longitudinal direction and side edges extending along the longitudinal direction. The pair of discharge electrodes are arranged such that both the main body portions are adjacent to each other in a short direction. The discharge electrodes face each other in the short direction between the side edges, and discharge occurs only between the side edges, between the discharge electrodes.

Abstract: A device (1) for the installation of a conducting component (2) on a structure (3) made from composite material, the inside of this structure (3) comprising a substance which can be ignited, which comprises an installation element (4) onto which the conducting component (2) is positioned, a conducting insert element (5), by means of which the installation element (4) is joined to the composite material structure (3) by its internal part, a conducting layer (6) arranged on the external part of the installation element (4) and a conducting fixing element (7) which joins the structure (3) and the installation element (4) to the insert element (5) and the conducting layer (6) so that the device (1) defines a low impedance current path through the conducting layer (6) and the insert element (5) through which the energy is dissipated from an atmospheric discharge to the component (2) or to the structure (3), the interior face of the structure (3) remaining isolated.

Abstract: A static electricity preventing circuit and a display device including the same are disclosed. In one aspect, the static electricity preventing circuit includes a power source voltage supply unit configured to apply a power source voltage to drive a display panel, wherein the display panel comprises a plurality of pixels respectively displaying images through light emission according to data voltages of image data signals. It also includes a signal wire unit configured to transmit lighting test signals for a lighting test of the pixels included in the display panel. It further includes a resistor unit positioned between the power source voltage supply unit and the signal wire unit and configured to discharge static electricity generated in the signal wire unit through the power source voltage supply unit.

Abstract: When neutralizing the static charges on both sides of a web exiting an unwinding roll, the inside surface of the web may carry a high level of static charge from the unwinding roll to the first conveyance roller. An electrical discharge between the charged inside surface of the web and the first conveyance roller may damage a sensitive, high value coating or layer on the inside surface of the web. Disclosed is a method for suppressing an electrical discharge between the charged inside surface of a web exiting an unwinding roll and a first conveyance roller.

Abstract: A lightning strike protection system for protecting composite structures, an improved lightning strike appliqué (LSA) for such a lightning strike protection system, and a method of protecting composite structures, such as an aircraft fuselage. The LSA is electrically connected to adjacent conductive surfaces, e.g., by a fuzz button or a wire bond inserted in the bottom of the LSA. An adjacent conductive surface may be another LSA, a lightning diverter overlay, or a current return network. Charge, e.g., from a lightning strike to the LSA, flows to the conductive layer through the electrical connector.

Abstract: An image forming apparatus including an image forming apparatus body, a cassette attaching section having a media supplying roller, a media cassette with a loading plate and a supporting section, a first ground conducting route and a second ground conducting route. The first ground conducting route conducts static electricity charged on the media when the media stacked in the media cassette is spaced away from the media supplying roller. A conducting portion of the first ground conducting route maintains the media cassette in an electrically disconnected state when the media passes through an opening in the cassette attaching section and reconfigures the media cassette from the electrically disconnected state to an electrically connected state before the media cassette reaches a first position. The second ground conducting route conducts static electricity charged on the media when the media cassette is in the first position.

Abstract: A method for optimizing performance of a static neutralizing power supply coupled to a controller and configured to provide an output to at least one ionizer includes, (a) during a first time period, sensing a current flow to the at least one ionizer, and (b) comparing, in the controller, an expected current flow to the sensed current flow. A difference between the expected and sensed current flows is proportional to a charge on an object to be neutralized proximate the at least one ionizer. The method further includes (c) adjusting, by the controller and based on the comparison, one or more properties of the output to the at least one ionizer to neutralize the charge on the object during a second time period following the first time period, and (d) periodically repeating steps (a)-(c) for successive first and second time periods.

Abstract: A circuit protection device includes a circuit conductor, at least one wire coil having at least one winding sized to receive the circuit conductor therein, and a ground shield configured to shield the winding from an electrostatic field generated by a common mode voltage between the circuit conductor and the winding.

Abstract: This disclosure provides a protection device for a display having a panel. The protection device includes a voltage generator coupled to the panel, configured for generating at least one common voltage; and a discharge unit coupled to the voltage generator, configured for discharging charges on the voltage generator when the display is turned off.