292results about "Earth/grounding circuits" patented technology

The invention discloses a heat insulation plate for a shield pump, a production process of the heat insulation plate and a shield pump unit, and belongs to the field of shield pumps. The shield pump unit comprises a control box, a pump body and a heat insulation plate, the heat insulation plate is installed between a box base bottom plate of the control box and a machine shell of the pump body, a grounding elastic piece is integrally formed in the heat insulation plate in an injection molding mode, the grounding elastic piece is provided with a first connecting end and a second connecting end, and a first grounding fastener penetrates out of the first connecting end and is connected with the machine shell in a fastening mode. The second grounding fastener penetrates out of the box base bottom plate and is connected with the second connecting end in a fastening mode. Grounding protection and the heat insulation plate are integrally designed, on the basis that the heat insulation plate is used for blocking heat transfer, grounding protection of the pump unit is achieved, electricity is guided into the ground, and electric leakage of a machine shell is prevented; and the sealing performance of the control box is improved, and external air is prevented from entering the control box, so that condensed water is prevented from being generated, and long-term safe application of the control box is guaranteed.

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.

Provided is a display device comprising a display panel including a display area and a non-display area and an electrostatic protection circuit disposed in the non-display area. The electrostatic protection circuit includes a first stage circuit including a (1-1)-th diode which causes a forward current to flow from a first node to a second node and a first capacitor and a first resistor connected in parallel to the (1-1)-th diode, a second stage circuit including a (2-1)-th diode which causes a forward current to flow from the second node to a third node and a second capacitor and a second resistor connected in parallel to the (2-1)-th diode, and a third stage circuit including a (3-1)-th diode which causes a forward current to flow from the third node to a fourth node and a third capacitor and a third resistor connected in parallel to the (3-1)-th diode.

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 provides a tuning assembly and a filter, and the tuning assembly comprises a cover plate which is provided with a plurality of columns of first threaded holes distributed at intervals in the width direction of the cover plate, and the first threaded holes in each column are distributed at intervals in the length direction of the cover plate; the multiple first adjusting rods are screwed and assembled in the multiple first threaded holes in a one-to-one correspondence mode, one of the hardness of the outer sides of the first adjusting rods and the hardness of the inner walls of the first threaded holes is relatively large, and the other one of the hardness of the outer sides of the first adjusting rods and the hardness of the inner walls of the first threaded holes is relatively small; and the first locking pieces are arranged on the first adjusting rods in a one-to-one correspondence mode, the first locking pieces are electrically connected to the cover plate and the first adjusting rods respectively, and the first locking pieces are grounded. When the first adjusting rod is rotated, one of the hardness of the outer side of the first adjusting rod and the hardness of the inner wall of the first threaded hole is relatively high, and the other one of the hardness of the outer side of the first adjusting rod and the hardness of the inner wall of the first threaded hole is relatively low, so that chippings generated by mutual friction between the first adjusting rod and the inner wall of the first threaded hole can be effectively avoided, and the situation that the intermodulation performance is reduced due to the fact that the chippings fall into the resonant cavity is effectively prevented.

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.

An embodiment of the present invention provides a driving recorder, which includes a hollow housing, a control circuit board assembled in the housing, and a camera module assembled at one end of the housing. The camera module includes an outer sleeve tube with both ends penetrating, a substrate fixed to one end of the outer sleeve tube, a lens barrel made of a metal material and fixed to the middle of the substrate and inserted into the outer sleeve tube, and a lens assembled in the lens barrel. The camera module further includes a conductive sealing rubber ring sleeved on the lens barrel, and the inner ring surface and the outer ring surface of the conductive sealing rubber ring elastically abut against the outer wall of the lens barrel and the inner wall of the outer sleeve tube respectively. The outer sleeve tube is made of a conductive material obtained by adding a conductive auxiliary material to a plastic raw material and mixing them evenly, and the outer sleeve tube is electrically connected to the grounding circuit on the control circuit board. This embodiment can effectively eliminate static interference and shield electromagnetic waves.

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 manufacturing apparatus is configured to bond a display panel to a cover window having a flat portion between a first curvature portion and a second curvature portion. The manufacturing apparatus comprises a first attachment portion configured to press a first adhesive surface of the display panel to the flat portion of the cover window, and a 3D attachment portion configured to press a first edge adhesive surface and a second edge adhesive surface of the display panel to the first curvature portion and the second curvature portion of the window, respectively, and not press the first adhesive surface of the display panel.

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.

A system for controlling the activation / deactivation of an electromagnetic shielding screen of a porthole or a protective window of an optoelectronic equipment, which includes, a radiofrequency electromagnetic sensor, with a bandwidth adapted to a cut-off band of said shielding screen corresponding to a range of electromagnetic fields to be blocked, connected to a detector-rectifier with a sensitivity higher than a minimum value of the power of an electromagnetic field to be blocked by means of said shielding screen and a device for activating / deactivating said electromagnetic shielding screen, said detector-rectifier being configured, in the presence of the electromagnetic field with a power exceeding said minimum value, to activate said device for activating / deactivating the electromagnetic shielding screen by capturing the electromagnetic energy supplied by said electromagnetic fields with a power exceeding said minimum value.

Disclosed is a display device including: a display panel; a heat dissipation plate formed of a metal and disposed on a rear surface or a side surface of the display panel; a printed circuit board disposed on a rear surface of the heat dissipation plate and connected to the display panel; and the conductive band covers the heat dissipation plate and the printed circuit board, and the conductive band is used for conductively connecting the rear surface of the heat dissipation plate with a grounding terminal of the printed circuit board.

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.

An electromagnetic insulation device includes a body material, a conductive EMI attenuation layer, and a plurality of conductive elements. The host material is substantially planar and flexible. The EMI attenuation layer is positioned inside the host material. A plurality of conductive elements are positioned in the host material. The EMI attenuation layer and the plurality of conductive elements are configured to be electrically connected to an external ground connection.

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.