64results about "Overvoltage circuit protection" patented technology

The application discloses a manufacturing method of a ground performance metal-based circuit board for an intelligent networked automobile. According to design data, a substrate is manufactured, first drilling is performed, and carbon oil is filled, then first baking and curing are performed, a filling hole is formed, and a filling plate is formed on the whole plate; then polishing is performed, a ground circuit pattern is manufactured on the surface copper layer, and a metal-based circuit board is formed on the whole plate through subsequent processing; through the manufacturing method, the problem of hole wall cracking and separation caused by the thermal expansion and cold shrinkage difference of multi-layer materials of the substrate is effectively avoided in the method for forming a ground circuit by adopting an electroplating hole in the prior art; meanwhile, the complex processes such as copper deposition and copper plating required in electroplating are omitted, the processing flow is simplified, the carbon oil material cost is lower than that of silver paste and copper paste in the prior art, the material matching of the carbon oil with the circuit board body is better, the electrical connection between the ground circuit and the metal-based layer can be stably realized, and good ground performance is ensured.

A printed circuit board (PCB) assembly for electrostatic discharge (ESD) protection is disclosed. The assembly includes a top layer comprising at least one signal track and configured to support at least a portion of a plurality of electronic components mounted thereon. A middle layer disposed beneath the top layer. The middle layer comprises at least one ground tack configured to receive electrostatic discharge currents from adjacent layers. A bottom layer disposed beneath the middle layer. The bottom layer comprising at least one power track and configured to support another portion of the plurality of electronic components. A plurality of metal discharge elements disposed on at least one of the top layer or the bottom layer. Each of the metal discharge element is electrically connected to the at least ground track of the middle layer.

A protection circuit arrangement includes a substrate having a first surface and a second surface; a connector on the first surface and electrically connected to a battery cell; an overvoltage protection element on the second surface and electrically connected to the connector; and a fuse on the first surface and electrically connected to the overvoltage protection element.

A printed circuit board (PCB) assembly for electrostatic discharge (ESD) protection is disclosed. The assembly includes a top layer comprising at least one signal track and configured to support at least a portion of a plurality of electronic components mounted thereon. A middle layer disposed beneath the top layer. The middle layer comprises at least one ground track configured to receive electrostatic discharge currents from adjacent layers. A bottom layer disposed beneath the middle layer. The bottom layer comprises at least one power track 108a and configured to support another portion of the plurality of electronic components. A plurality of metal discharge elements disposed on at least one of the top layer or the bottom layer. Each of the metal discharge element is electrically connected to the at least ground track of the middle layer.

A sensing device is disclosed. The sensing device comprising a printed circuit board (PCB), a conductive port coupled to the PCB via a conductive adhesive and defining an orifice filled with a protective gel. Further, the sensing device comprises a sensing element disposed on the PCB within the conductive port and encased by the protective gel, and a conductive member disposed at least over the protective gel. The conductive member is configured to discharge static charges accumulated over the protective gel to the PCB via at least the conductive adhesive.

A segmented bottom-emitting OLED device compromising an array of multiple OLED segments arranged on a common transparent substrate, where the array forms an emitting area where each segment is separated by a non-emitting gap; wherein each OLED segment is defined by a transparent bottom electrode segment, organic layers for light emission, and a top electrode; wherein between the bottom electrode and the substrate in at least one OLED segment, there is a transparent insulating layer that is closer to the bottom electrode segment and a transparent conductive layer that is closer to the substrate.

A circuit board includes a board, an interface formed on the board, a discharge wiring pair formed on the board and having a first discharge wire connected to the interface and a second discharge wire having a second tip portion facing a first tip portion of the first discharge wire with an interval, an electronic component installed in a signal path connected to the interface, a ground path connected to the second discharge wire, and a discharge induction unit configured to induce discharge between the discharge wiring pair by making a current having a frequency based on a voltage waveform of static electricity to be discharged flow more easily in the discharge wiring pair than in the signal path.

The invention relates to the technical field of flexible printed circuit boards, and discloses a high-reliability vehicle-mounted module FPC structure and a preparation method thereof.The high-reliability vehicle-mounted module FPC structure comprises a base material layer, a first rolled copper layer, an FR4 enhancement layer, a second rolled copper layer, a covering layer, an EMI shielding layer and a binding structure shaped like a Chinese character'feng ', and the first rolled copper layer and the second rolled copper layer are symmetrically arranged to form a four-layer rolled copper structure; a circle of copper ground wire is reserved on the edges of the upper and lower line layers, and grid copper is fully paved on the two layers outside the upper and lower line pavement. Through the triple shielding design of the copper ground wire, the grid copper and the EMI material, full-band electromagnetic shielding is realized, the shielding effectiveness is improved by more than or equal to 15dB, and the problem of signal interference in a vehicle-mounted environment is effectively solved; and by adopting a rolled copper material and an FR4 enhancement layer structure, the bending resistance of the FPC exceeds one million times, the binding strength is greater than or equal to 49N, and the FPC is suitable for a vehicle-mounted wide temperature range from-45 DEG C to 125 DEG C.

Disclosed is a substrate comprising a ceramic main body (1) and an organic surface structure (2) on at least one outer face of the ceramic main body (1), outer redistribution layers (3) being integrated into the organic surface structure.

A testing system may include a first printed-circuit board coil embedded on a printed circuit board. The testing system may include a second printed-circuit board coil embedded on a second printed circuit board, wherein the second printed-circuit board coil is electrically connected to the first printed-circuit board coil in a series-type configuration. The testing system may include a test circuit electrically connected to the first printed-circuit board coil and the second printed-circuit board coil, the test circuit configured to: receive a signal from at least one selected from a group consisting of the first printed-circuit board coil and the second printed-circuit board coil, analyze the signal, and determine a fault based on the signal.

The present disclosure discloses an electrostatic discharge (ESD) protection system for micro devices. The ESD protection system includes a pixel driver circuit electrically connected to at least one micro LED pixel for controlling the turn-on or turn-off of the micro LED pixel, and a first ESD protection unit configured in an external circuit outside the pixel driver circuit. The first ESD protection unit includes at least one unidirectional transient voltage suppressor. The cathode of the unidirectional transient voltage suppressor is connected to a first level voltage (Vdd), and the anode of the unidirectional transient voltage suppressor is connected to a second level voltage (Vcom). The micro LED pixel is connected to the second level voltage (Vcom). The present disclosure can protect the micro LED pixel from damage by electrostatic discharge. Various embodiments include an ESD protection system for a display panel having an array of micro LED pixels.

A high-density multi-component package is provided that includes a first module interconnect pad and a second module interconnect pad. At least two electronic components are mounted to the first module interconnect pad and the second module interconnect pad and between the first module interconnect pad and the second module interconnect pad, wherein the first electronic component is vertically oriented with respect to the first module interconnect pad. The second electronic component is vertically oriented with respect to the second module interconnect pad.

A split bottom-emitting OLED device including an array of OLED segments disposed on a common transparent substrate, each segment forming an emissive area separated by a non-emissive gap, each OLED segment defined by a transparent bottom electrode segment, a light-emitting organic layer, and a top electrode, and in at least one OLED segment, between the bottom electrode and the substrate, a transparent insulating layer proximate the bottom electrode segment and a transparent conductive layer proximate the substrate.

The invention provides a flexible circuit board, a display module and a display device.The flexible circuit board is provided with a first area and a second area surrounding the first area, and the flexible circuit board comprises a first wire layer arranged in the first area and the second area; the first shielding piece is at least partially arranged in the first area and is arranged on one side of the first wire layer; in the unfolded state of the flexible circuit board, the first shielding pieces extend in the first direction, the multiple first shielding pieces are arranged at intervals in the second direction, and the first direction and the second direction intersect. The electrostatic protection capability of the flexible circuit board can be improved.

The invention discloses an anti-static protection circuit board for a computer. The anti-static protection circuit board comprises the following steps: S1, manufacturing a first intermediate board, wherein the manufactured first intermediate board comprises a unit static protection board and a bearing board with a windowing area; the bearing plate comprises an insulating base material layer and a second metal layer, the second metal layer is arranged on one side of the insulating base material layer, and the windowing area is arranged on the second metal layer; s2, manufacturing a second intermediate plate: forming a circuit pattern on the unit metal layer and the second metal layer; and S3, forming the printed circuit board: forming at least one additional layer on the outer side of the second intermediate plate. The electrostatic protection capability is improved to + / -15kV by adopting a multi-level protection structure and is improved by 50% compared with that of a traditional scheme, the circuit has no fault under the + / -8kV contact discharge condition, and automatic recovery can be realized within 100ms during + / -15kV air discharge. The unit electrostatic protection plates are partially embedded, and conversion gaps are accurately divided.

Embodiments of this application provide an electrical device, including a substrate and two power terminals that are disposed at an interval on the substrate. At least one of the power terminals is partitioned into two conductive sections that are spaced along an insertion direction of the substrate and are connected in series by using a resistor; and capacitors are disposed between power circuits that are electrically connected to the two power terminals. When hot swap is performed between the electrical device and a piece of power sourcing equipment, current-limiting charging is first performed on the capacitors by using a conductive section located in the front of the insertion direction of the substrate; and then a conductive section located at the rear of the insertion direction of the substrate is connected to implement power input. In this way, even if an output voltage of the power sourcing equipment is high, phenomena such as sparking and ablation are not likely to occur at the two power terminals, and electrical connections between the electrical device and the power sourcing equipment are not easily affected.

Described is a display device including: a display panel in which a display area and a non-display area located around the display area are defined; an external device which is disposed on the non-display area of the display panel; and a cover member which is disposed on the external device, wherein the external device includes a driving chip and a printed circuit film which is disposed on the non-display area of the display panel and spaced apart from the display area with the driving chip interposed between the printed circuit film and the display area in plan view, and the cover member includes a first insulating layer disposed on the external device, a first conductive layer disposed on the first insulating layer and a second insulating layer disposed on the first conductive layer, wherein the second insulating layer includes an electrostatic induction opening penetrating the second insulating layer in a thickness direction, a planar size of the first conductive layer is greater than a planar size of the second insulating layer, the first conductive layer protrudes further toward the display area than the second insulating layer in plan view, and the electrostatic induction opening is disposed on a part of the first conductive layer which protrudes further toward the display area than the second insulating layer.

To provide a transient voltage protection characteristic device capable of suppressing deterioration of transient voltage protection characteristics.SOLUTION: A transient voltage protection device includes an element body 2, a first external electrode disposed on a surface of the element body 2, a second external electrode disposed on the surface of the element body 2 and separated from the first external electrode, an internal electrode 5, and an internal electrode 6. The internal electrode 5 is disposed in the element body 2 and is connected to the first external electrode. The internal electrodes 6 face the internal electrodes 5 in the element body 2 and are connected to the second external electrode. The internal electrodes 5 include ends exposed to the surfaces of the element body 2 and connected to the first external electrodes, and an end 5f located in the element body 2 and separated from the surfaces of the element body 2. The end 5f includes a corner portion 51 including an edge 51a facing the internal electrodes 6. The edge 51a is curved in a plan view of the internal electrodes 5.SELECTED DRAWING: Figure 5

A printed circuit board includes a front layer including frame ground regions on which connectors to be connected with external apparatuses or communication cables are mounted and which are connected with a ground, a signal ground region which is separated from the frame ground regions at the front layer, on which electronic devices configured to receive signals from the connectors are mounted, and which is connected with a ground, and a static electricity removal ground region separated from the frame ground regions and the signal ground region at the front layer, situated outside the frame ground regions, and connected with a ground.

An electrical connector for high speed and high performance applications requiring protection against electrostatic discharge (ESD). In embodiments, the electrical connector includes a dielectric housing having a plurality of cavities descending from a top surface of the housing, a copper ground plate mounted atop or proximal to the top surface having a plurality of perforations corresponding in number and position to the plurality of cavities, and a plurality of electrical contacts each positioned at depth in one of the cavities such that the electrical contacts are recessed relative to the copper ground plate such that, in use of the electrical connector, a shortest path of ESD is to the copper ground plate and not any of the electrical contacts.

Provided is a display apparatus including: a liquid crystal panel; a substrate; a light source module disposed on the substrate. The light source module includes a light emitting diode disposed on the substrate, a feed pad provided on the substrate, an antistatic pad provided on the substrate; and an insulating dome provided on the substrate and covering the light emitting diode. The antistatic pad is divided into two parts by an outline of the insulating dome.

An electronic device is provided. The electronic device includes a first housing including a conductive first side frame, a second housing including a conductive second side frame, a flexible display disposed on the first housing and the second housing, a hinge module rotatably coupled between the first housing and the second housing, and a printed circuit board (PCB) disposed on the first housing or the second housing, the PCB includes a conductive member electrically connected to the conductive first side frame or the conductive second side frame, a signal layer, a ground layer, and an insulation layer, wherein the PCB includes at least one discharge hole recessed from a side (e.g., surface) of the PCB so that the ground layer is visible from an outside and forming a gap between the signal layer or the conductive member and the ground layer.

A sensing device is disclosed. The sensing device comprising a printed circuit board (PCB), a conductive port coupled to the PCB via a conductive adhesive and defining an orifice filled with a protective gel. Further, the sensing device comprises a sensing element disposed on the PCB within the conductive port and encased by the protective gel, and a conductive member disposed at least over the protective gel. The conductive member is configured to discharge static charges accumulated over the protective gel to the PCB via at least the conductive adhesive.

A circuit configuration includes a voltage surge protector that is connected in parallel to the link capacitor to protect the link capacitor from voltage overloads. A printed circuit board assembly, an electric axle drive, and a motor vehicle are also disclosed.

A flexible circuit board, a display module and a display device are provided. The flexible circuit board includes: an electrostatic discharge protection circuit, an electrostatic discharge detection circuit and a switch circuit; an input end of the electrostatic discharge detection circuit is coupled to an output end of the electrostatic discharge protection circuit, and an output end of the electrostatic release detection circuit is coupled to a control end of the switch circuit; a first end of the switch circuit, a reset signal output end of an application processor, and a reset signal input end of a Display Driver Integrated Circuit (DDIC) are coupled to the first node, and a second end of the switch circuit is coupled to a ground.

Provided is a light apparatus including: a reflective sheet in which a hole is formed; and a light source module exposed through the hole. The light source module may include a board aligned in parallel with the reflective sheet, wherein a first surface of the board is toward the reflective sheet, a light emitting diode positioned in an area defined by the hole on the first surface of the board, a feed pad positioned on the first surface of the board and contacting the light emitting diode, an insulating dome positioned in the area defined by the hole on the first surface of the board and covering the light emitting diode, and at least one antistatic pad positioned in the area defined by the hole on the first surface of the board, without contacting the light emitting diode.

Printed circuit board (10) for a light module (100) of a vehicle, comprising an electrical circuit (20) with a consumer (30) and at least one short-circuit section (40) connected in parallel to the consumer (30), wherein the circuit (20) has a fuse device (50) connected in series with the consumer (30) and the short-circuit section (40) for disconnecting the electrical circuit (20), and wherein the short-circuit section (40) has a first conductor surface (42) and a second conductor surface (44) separated from the first conductor surface (42) by a short-circuit gap (46), wherein the short-circuit section (40) is formed by the two adjacent conductor surfaces (42, 44).

An electronic device is provided. The electronic device may include: a first housing including a conductive first side frame; a second housing including a conductive second side frame; a flexible display disposed on the first housing and the second housing; a hinge module rotatably coupled between the first housing and the second housing; and a printed circuit board disposed in the first housing or the second housing and including: a conductive member electrically connected to the conductive first side frame or the conductive second side frame; a signal layer; a ground layer; and an insulating layer. The printed circuit board may include at least one discharge hole that is recessed from the surface of the printed circuit board such that the ground layer is visible from the outside and that forms a gap between the ground layer and any one of the signal layer and the conductive member.

A transformer circuit according to an embodiment of the present invention comprises: a power input unit; and a transformer for transforming a voltage input from the power input unit and including a primary-side transformer unit and a secondary-side transformer unit, wherein a moisture-proofing agent is applied to an EMI filter, a bridge diode, a flyback transformer, a flyback IC, and a photo coupler included in the primary-side transformer unit.

Disclosed is a display substrate, including a base substrate (100), a circuit structure layer disposed on the base substrate (100), and a light emitting structure layer. The circuit structure layer includes a plurality of pixel circuits located in a first display region (A1), at least one first trace 231 extending along a first direction (D1), at least one second trace 232 extending along a second direction (D2), and at least one third trace located in a peripheral region (BB). The at least one first trace (231) is electrically connected with the at least one second trace (232) and the at least one third trace is electrically connected with at least one of following; the at least one first trace (231) and the at least one second trace (232).