214results about "Earth/grounding circuits" patented technology

Methods, systems, and apparatuses for grounding of integrated external electromagnetic interference (EMI) shields are provided. A portion of a module substrate, different from a circuit board substrate, may protrude past the module as a location for one or more grounding pads to which the EMI shield is grounded. The EMI shield may cover at least a portion of the thickness of the module substrate. The EMI shield may be comprised of one or more parts, which may be coupled to one another. The module substrate may include conductive vias. The EMI shield may include a sprayed and / or printed coating. The EMI shield may include a darkened coating.

A flexible display device example includes a display panel including an active area, a non-active area, and a bending area and having one edge that is bent in a rear direction to have a predetermined curvature, first and second back plates disposed on a rear surface of the display panel, a metal plate disposed on a rear surface of the first back plate and an adhesive member disposed between the metal plate and the second back plate, and including a support layer, a first adhesive layer and a third adhesive layer disposed on an upper portion of the support layer, and a second adhesive layer disposed on a lower portion of the support layer, wherein the third adhesive layer may include a conductive material and may have conductivity. Thus, fixing force of a bending portion may increase, thereby preventing cracks in the bending portion that may occur during drop evaluation.

An assembly is provided which includes a package and a printed circuit board. The package includes a housing bounding a region and an acoustic sensor within the region. The housing includes a base with a first hole. The sensor is configured to generate signals indicative of sound received by the sensor through the first hole. The printed circuit board is in mechanical communication with the base and includes a second hole aligned with the first hole such that sound received by the second hole propagates through the first hole to the sensor. The printed circuit board further includes an electrically conductive layer, at least a portion of which extends across the second hole and is configured to allow the sound to propagate through the second hole and to at least partially shield the region containing the sensor from electromagnetic interference.

The invention relates to an electromagnetic compatibility and radio frequency coexistence framework, and belongs to the technical field of vehicle-mounted display and electromagnetic compatibility. The device comprises a display module and a control system which are arranged outside a vehicle body, the control system is provided with a cooperative control unit, an electromagnetic interference suppression module and a running state monitoring and adjusting module to form a closed-loop framework, and the closed-loop framework is used for dynamically managing display signals, power and a time sequence in the running process of the vehicle, suppressing conduction and radiation interference and controlling the running state of the vehicle. And the coexistence performance of the external display and the vehicle-mounted radio frequency system is ensured, and the electromagnetic compatibility regulations are met. Further, the system comprises an integrated topology unit, a coexistence monitoring unit and a strategy execution unit, driving time sequence shaping, backflow path constraint and power supply ripple shaping are achieved, and when interference exceeds a threshold value, the system is switched to a controlled display state. A shielding-grounding-filtering three-in-one layout and a driving time sequence shaping unit can be adopted. According to the invention, the safety and reliability of external display in the aspects of electromagnetic compatibility, radio frequency coexistence and service life management are ensured.

The invention belongs to the technical field of fire-fighting alarm system construction, and discloses a construction technology for a fire-fighting automatic alarm system, and the technology comprises the following steps: S1, cable laying and protection; s2, accurately positioning and installing the detector; s3, system grounding and electromagnetic protection; s4, dynamic parameter adjustment and linkage test; and S5, performing three-dimensional shape scanning and compensation correction. A stable charge release path is formed through an independent grounding system and a multi-level shielding technology, external electromagnetic interference is effectively isolated, and real-time performance and accuracy of fire alarm signal transmission are guaranteed. The spatial layout optimization of the detector is combined with a laser calibration mechanism, the influence of structural shielding and airflow disturbance on sensitivity is broken through, and millisecond-level capture and positioning of fire characteristic signals are realized. A dynamic parameter closed-loop control and multi-system linkage verification technology ensures the cooperative response efficiency of emergency equipment under extreme working conditions, and constructs a whole-process security closed loop from early warning to disposal.

The invention relates to a power supply wall box with strong electromagnetic pulse combined protection and high shielding effectiveness, which belongs to the technical field of electronic equipment shielding square cabins and comprises a shell, an out-cabin panel, an in-cabin panel, a power supply lightning protection device and a combined filter. An out-cabin panel is installed at one end of the shell, an in-cabin panel is installed at the other end of the shell, and the shell is fixed to a cabin plate of the square cabin. And a plurality of connector sockets are arranged on the panels outside and inside the cabin in a one-to-one correspondence manner to form a plurality of groups of power interfaces. The plurality of combined filters are mounted on a mounting plate in the shell, the combined filters are connected in series in a power supply loop of a group of connector sockets, and the power supply lightning protection devices are mounted on an out-cabin panel and are connected into the power supply loop of the corresponding group of connector sockets. Through the integrated design of lightning protection, HEMP protection and EMI filtering of the square cabin power supply, and in cooperation with the structural design of the wall box, the problems that an existing square cabin wall box is single in protection function and does not have the lightning protection function, the HEMP protection function and the high shielding effect at the same time are solved.

A camera module includes a housing; cover covering the housing and including a protrusion guide on a side wall of the cover; a folded module disposed in the housing and configured to reflect incident light; a lens module through which the reflected light passes disposed in the housing; an image sensor module mounted on the housing and configured to detect the light passing through the lens module; a reinforcing plate disposed on an outer surface of the side wall of the cover so that one edge of the reinforcing plate is adjacent to the protrusion guide; and a module circuit board disposed outside the housing and including a connection portion connected to the image sensor module, and a fixing substrate connected to the connection portion and disposed on the reinforcing plate, wherein the connection portion is bent to enable the fixing substrate to be disposed on the reinforcing plate.

An electromagnetic pulse (EMP) protection control method and system for an electronic device, and a terminal device, relating to the technical field of EMP protection. The method comprises: acquiring EMP data of a target electronic device in real time; processing and analyzing the EMP data to obtain a signal strength and a signal frequency which correspond to the EMP data; on the basis of comparative analysis between the signal strength and a corresponding specific threshold, between the signal frequency and a corresponding specific threshold, and between the EMP data and a known EMP event database, determining whether an EMP event occurs; and if the EMP event occurs, using a protection strategy to perform a protection operation on the target electronic device. The EMP protection control method for an electronic device is applied to the electronic device, so that the protection strategy is used to protect the electronic device when the EMP event occurs to the electronic device, so as to enable the electronic device to continue working under a redundant system, thereby improving the running reliability of the electronic device, and also ensuring that the electronic device can continue working when the EMP event occurs.

The invention provides a display panel, a preparation method of the display panel and display equipment. The display panel comprises a substrate, and a signal shielding layer, a protection layer and an isolation structure which are sequentially arranged on the substrate, the isolation structure is enclosed to form a plurality of first isolation openings and a plurality of second isolation openings; the plurality of first isolation openings are used for arranging light-emitting functional layers of a plurality of light-emitting devices, the orthographic projection of the shielding signal layer on the substrate covers the orthographic projection of the second isolation structure on the substrate, and the orthographic projection of the protection layer on the substrate covers the orthographic projection of the second isolation opening on the substrate. Thus, the area where the second isolation opening is located can be used as a light hole area, the signal shielding layer can be used for effectively shielding interference of touch signals brought by the touch electrode layer, meanwhile, the protection layer is used for protecting the signal shielding layer, the signal shielding layer can be prevented from being damaged in the manufacturing process, the shielding failure condition is further avoided, and the manufacturing efficiency is improved. Therefore, the touch performance of the display panel is effectively improved.

A rollable display apparatus including a display panel having a threshold curvature radius; a roller, having a curvature radius equal to or larger than the threshold curvature radius, attached to one side of the display panel and configured to allow the display panel to be rolled-up; and a curved surface member, spaced apart from the roller, having a curvature radius equal to or larger than the threshold curvature radius in an area in contact with the display panel, configured to bend the display panel in a direction opposite to a direction in which the display panel is rolled by the roller.

The invention relates to a high-frequency module and a communication device. Provided is a high-frequency module which is reduced in size by reducing the size of a mounting substrate. A high-frequency module (1) is provided with a mounting substrate, a first member (6), and a shield member (3). The mounting substrate has a first main surface (21) and a second main surface. The first member (6) is disposed on a first main surface (21) of the mounting substrate. The shield member (3) is disposed on the first main surface (21) of the mounting substrate. The first member (6) is in contact with the shield member (3).

The invention discloses electronic equipment and a circuit board grounding gasket, and the electronic equipment comprises a housing which is provided with an accommodation space, and the inner wall of the housing is provided with a grounding connection seat; the circuit board is arranged in the accommodating space; the grounding gasket is connected with the grounding connecting seat and the circuit board so as to be in grounding connection with the circuit board; wherein the grounding gasket comprises a gasket part and a part part, the gasket part and the part part are an integrated metal part, the gasket part is in grounding connection with the grounding connection seat, and the part part is formed by extending the edge of the gasket part and serves as a part except the electronic equipment gasket in function. In the scheme, the gasket and other parts except the gasket are prepared into the integrated metal part, so that the number of the whole parts in the electronic equipment can be reduced, and the assembly efficiency of the electronic equipment is improved.

The invention relates to the technical field of water pump driver design, and particularly discloses a distributed driver for restraining disturbance power and a water pump. In order to solve the technical problem that high-frequency disturbance signals generated by a power switch unit are amplified due to the fact that a driving board of an existing distributed driver is separated and connected through a long wire, and then the disturbance power of a whole machine exceeds the standard, a capacitor is additionally arranged on the driving board provided with the power switch unit; and the capacitor is connected between the power supply cathode of the power switch unit and the grounding loop of the equipment. A high-frequency signal internal backflow path is constructed, so that high-frequency disturbance current can directly return to a power supply end through the capacitor and grounding metal parts (such as a box cover and a machine base), the signal amplification effect caused by long wire transmission is effectively avoided, and disturbance power emitted outwards through a power line is remarkably reduced. The scheme can ensure that the product meets the EMC standard requirement without changing the distributed layout of the driver, and has the advantages of small structural change and easiness in implementation.

The application discloses a packaging structure, an electro-optical modulator and an optical quantum computer, and relates to the technical field of optical communication. The packaging structure comprises a tube shell, a support and an electro-optical chip. The electro-optical chip is arranged on the tube shell through the support. The support is used for isolating the tube shell and the electro-optical chip. The packaging structure, the electro-optical modulator and the optical quantum computer can inhibit a parasitic mode and improve the electro-optical broadband of the electro-optical device.

The invention discloses a wrapping type conductive shielding film for an SD memory card. The wrapping type conductive shielding film comprises a conductive cloth single-sided adhesive tape, a first conductive double-sided adhesive layer, a copper foil layer, a second conductive double-sided adhesive layer, an insulating film and a third conductive double-sided adhesive layer, the copper foil layer is arranged on the adhesive surface of the conductive cloth single-sided adhesive tape through the first conductive double-sided adhesive layer; the second conductive double-sided adhesive layer covers the copper foil layer and the conductive cloth single-sided adhesive tape area which is not covered by the copper foil layer; the insulating film is arranged on a partial region of the second conductive double-sided adhesive layer; the third conductive double-sided adhesive layer is arranged at the edge part of the second conductive double-sided adhesive layer; after the conductive shielding film forms a wrapping structure, the third conductive double-sided adhesive layer is in lap joint with the outer side of the conductive cloth single-sided adhesive tape. The conductive shielding film provided by the invention has the advantages of excellent electromagnetic shielding effectiveness, ultra-thin and light weight, good flexibility and wrapping property, reliable low-impedance grounding, good insulation protection and the like, and can ensure stable operation of the SD memory card in various complex electromagnetic environments.

The display device includes: a first substrate on which a display area and a non-display area are defined; a thin film transistor at a portion above the first substrate corresponding to the display area; a planarization layer over the substrate and the thin film transistor at a portion corresponding to at least a portion of the non-display area and the display area; an organic light emitting diode at a portion on the planarization layer corresponding to the display area; a cover layer at a portion corresponding to at least a portion of the non-display area and the display area to cover the planarization layer and the organic light emitting diode at the portion corresponding to at least a portion of the non-display area and the display area; and an anti-oxidation layer covering an end portion of the planarization layer and an end portion of the cap layer in the non-display area.

The invention relates to the technical field of electromagnetic shielding films, and discloses a shielding film and folding electronic equipment. The number of bending times of the shielding film is within a first preset range, the resistance change rate of the shielding film and the number of bending times of the shielding film meet the following function: y = Ax4-Bx3 + Cx2-Dx + E, y represents the resistance change rate of the shielding film, x represents the number of bending times of the shielding film, and A, B, C, D and E represent fitting coefficients of the function. The resistance change rate of the shielding film and the bending frequency of the shielding film meet the function y = Ax4-Bx3 + Cx2-Dx + E. The shielding film has good bending resistance.

This invention discloses a negative ion generating circuit, system, and household appliance; belonging to the field of negative ions; under the control of a pulse oscillation unit, a boost unit boosts the input voltage of the input unit, and then obtains high voltage under the action of a voltage doubler rectifier and protection circuit, thereby increasing the negative ion concentration; the single negative electrode of the output unit discharges, and because a current limiting unit is set between the single negative electrode and the voltage doubler rectifier and protection circuit, the current at the single negative electrode can be reduced, thus suppressing ozone. Simultaneously, the connection point between the current limiting unit and the voltage doubler rectifier and protection unit is grounded, which can consume positive ions and eliminate static electricity.

The utility model relates to a substrate, a display panel including the substrate, and an electronic device including the display device. The substrate includes: a first base layer; an adhesive layer on the first base layer, the adhesive layer including at least one trench; a second base layer on the adhesive layer; and a barrier overlapping the at least one trench, the at least one trench penetrating the adhesive layer.

Embodiments of the present application provide a display module and a display device. The display module comprises a flexible circuit board and a display panel. The flexible circuit board and the display panel are connected in a binding mode. The flexible circuit board comprises a substrate layer and a conductive layer arranged in a stacking mode. The conductive layer comprises a first grounding part and a second grounding part arranged in a spaced mode. One end of the flexible circuit board is provided with a connecting structure. The connecting structure comprises at least an electrostatic input end. The electrostatic input end is electrically connected with the second grounding part. The first grounding part is electrically connected with a grounding wire in the display panel. The embodiments of the present application can reduce the amount of electrostatic entering the display panel, and realize electrostatic protection for the display panel.

The invention provides a programmed capacitance output device which comprises a processor circuit, a driving circuit, a first relay set, a capacitor set, a second relay set and a communication and interface circuit which are connected in sequence, the processor circuit is connected with the communication and interface circuit, and the communication and interface circuit is connected with upper computer software and a product to be tested. The driving circuit is connected with the second relay group; the output end of each capacitor in the capacitor bank can output three capacitance values through on-off setting of the relay, and any capacitance output value of a specified capacitance difference interval within a specified capacitance range can be obtained by adjusting the capacitance value of each capacitor. According to the invention, the multi-group capacitor input capability is provided for the segmented capacitive converters with different measuring ranges, the test requirements in various test scenes such as aging, temperature circulation and vibration when the converters are batched are met, and the test resources and the test cost can be saved to the greatest extent.

The invention provides an elastic piece, an electric connection assembly and electronic equipment. The elastic piece is used for being arranged between a first structural part and a second structural part which are oppositely arranged in a first direction. The elastic arm of the elastic piece extends in the second direction, the first contact part of the elastic arm is used for being mutually extruded with the elastic connection part of the first structural piece in the third direction, and the first direction is perpendicular to the second direction and the third direction. The guide arm of the elastic piece is connected to the first side of the elastic arm, and when the first structural piece is assembled from the side, away from the elastic arm, of the guide arm to the side, close to the elastic arm, of the guide arm in the first direction, the guide arm can guide the elastic connection part of the first structural piece and the first contact part of the elastic arm to be mutually extruded. The elastic sheet provided by the invention can reduce the space occupied by the elastic sheet in the thickness direction of the electronic equipment on the premise of ensuring smooth assembly of the electronic equipment, and is beneficial to lightening and thinning of the electronic equipment.

The invention relates to a device for providing a ground path, used for shielding, between a printed circuit board (8) and an electrically conductive housing component (2) having a ground plate (10) which has radially resilient contact elements (14). The device according to the invention is characterised in that the printed circuit board (8) is electrically connected to the ground plate (10) via a screw connection or rivet connection (13), wherein the electrically conductive connection between the ground plate (10) and the housing component (2) is established via the resilient contact elements (14) of the ground plate (10). The device can in particular be used in a high-voltage battery.

An electronic device is disclosed. The electronic device may comprise: a housing comprising a metal portion, wherein the metal portion comprises a frame structure for forming a portion of the surface of the electronic device, and a plate structure extending into an inner space of the housing; a printed circuit board disposed on the plate structure; a camera module disposed on the plate structure, wherein the camera module comprises a connector coupled to the printed circuit board and the connector comprises a conductive pad electrically connected to a ground area of the camera module; a vapor chamber which is conductive and disposed between the plate structure and the printed circuit board and at least a portion of which faces the conductive pad of the connector; an electrical absorption member disposed between the vapor chamber and the conductive pad; an insulative adhesion member disposed between the vapor chamber and the plate structure; and a varistor for electrically connecting the vapor chamber and the metal portion. Various other embodiments identified from the specification are possible.

The embodiment of the invention discloses an electronic device which comprises a shell, a metal connecting piece, a main control board, a fixing support, a conductive layer, an elastic conductive connector and a flexible circuit board, the metal connecting piece is connected in an installation groove in the shell, and the fixing support and the main control board are arranged in the shell. The conductive layer is formed on the top face, the connecting face and the outer side face of the fixing support through the PDS technology, the two ends of the elastic conductive connector are electrically connected with the metal connecting piece and the conductive layer respectively, one end of the flexible circuit board is electrically connected with the conductive layer, and the other end of the flexible circuit board is electrically connected with the main control board. Therefore, static electricity generated on the metal connecting piece is discharged and conducted to a grounding point of the main control board through the flexible circuit board. The grounding mode of the metal connecting piece in the electronic equipment is simple, the number of parts is small, the assembly process is simplified, and the electrostatic protection effect is achieved.

A display module and a display apparatus are provided. The display module according to an exemplary embodiment of the present application can include a cover member including an end portion, a display panel on a surface of the cover member, a buffer plate on a surface of the display panel, and an adhesive layer between the cover member and the display panel, wherein an end portion of the adhesive layer is disposed more outward than an end portion of the display panel toward the end portion of the cover member.

A display device includes a metal layer, a multi-functional layer, an adhesive layer, a display substrate, a printed circuit board, and a conductive connector. The multi-functional layer is disposed on the metal layer, and includes graphite and a resin mixed with the graphite. The adhesive layer is disposed on the multi-functional layer. The display substrate is disposed on the adhesive layer. The conductive connector directly connects a first surface of the printed circuit board and a lower surface of the metal layer.