44results about How to "Shorten the signal transmission distance" patented technology

An electrical connector includes an insulating body with a main body portion in which a first receiving space is concavely formed. Spaced first terminal passages extend in a top surface of the first receiving space. A second receiving space is formed in the front end of the main body portion and connected with the first receiving space. A tongue plate extends forwards from a front end face of the main body portion and has a working surface in which spaced second terminal passages extend. The second receiving space is located above the tongue plate. First and second conductive terminals are respectively correspondingly received in the first and the second terminal passages. When a memory card is inserted into the connector, there is no other in-series disturbed signal noise for stable signal transmission; and when the memory card is inserted to its position, it cannot swing and can be connected stably.

A circuit substrate includes a board, a plurality of metal layers and an insulator. The board has a plurality of conductive traces layers and a via formed therein. The metal layers are formed on the inner wall of the via and each of the metal layers is electrically connected to its corresponding conductive traces layer. The via is filled with the insulator so that each of the metal layers is electrically isolated from each other. In addition, this invention also provides a fabrication method of the circuit substrate.

The invention provides a measurement and transmission apparatus for marine riser fatigue parameters and a calculation method of optimal repeater spacing. The apparatus comprises an underwater sound signal receiving device, a plurality of repeaters and a marine riser fatigue monitoring device. The marine riser fatigue monitoring device detects a fatigue signal and transmits the fatigue signal to the repeaters; and after multiple transmissions by the repeaters, the fatigue signal is transmitted to the underwater sound signal receiving device. According to calculation of energy consumption of different repeater spacing single hop links, total transmission energy consumption of employing different repeater spacings is figured out, thereby figuring out the optimal repeater spacing corresponding to a lowest total transmission energy consumption by comparison. The invention employs repeaters to shorten a signal transmission distance, reduce transmission power consumption of a single hop distance; besides, an optimal distance scope exists, so as to realize a lowest total transmission energy consumption.

The invention discloses an encapsulating piece for preventing a chip salient point from being short-circuited and a manufacturing process thereof. The encapsulating piece mainly comprises a copper circuit, an annular copper column, a copper column, a copper plate, a chip salient point, a chip, a molten chip salient point, a plastic package body, a copper column left after back side etching, a green oil layer and a tin ball, wherein the copper circuit, the annular copper column and the copper column are arranged on the copper plate; the molten chip salient point is bonded in the annular copper column; the chip is arranged at the chip salient point; the left copper column is formed after back side etching of the copper plate; the green oil layer is formed on the back side of the copper plate; the tin ball is arranged on the copper column left after back side etching; the plastic package body surrounds the upper surface of the copper plate, the copper circuit, the annular copper column, the copper column and the chip to form an integral circuit; and the chip, the chip salient point on the chip, the annular copper column and the copper column left after back side etching construct a power supply and a signal channel. The process flow comprises wafer thinning, wafer scribing, reserve chip loading, reflow cleaning, plastic package, etching for separating pins, filling green paint, printing and reballing of a steel screen, printing, cutting, packing and delivering. Due to the adoption of the encapsulating piece, short circuit between two chip salient points can be prevented, and the reliability of a product is improved.

It is an object of the present invention to provide switching equipment for communications networks, which switching equipment supports high-speed signalling between switch cards and line cards. Hence, the invention relates to a switching device for communications networks comprising a plurality of line cards and at least one switch card. The line cards comprise connection means arranged on or close to one edge of each line card, and the at least one switch card comprises matching connection means arranged on one flat side of said switch card. In this way, when said switch card is arranged substantially perpendicular to said line cards with said flat side of the switch card facing and at least partially overlapping said edges of the line cards, interconnection is achieved between the connection means of the line cards and the matching connection means of the at least one switch card.

The invention belongs to the technical field of automatic testing of slab band rolling lines, and relates to a detection device for automatically detecting the flatness (strip shape) of cold and hot rolled strips on line. The detection device is characterized in that a detecting roller (4) is arranged on bearing seats (3) and (3'); a stepless speed regulating motor (1) which can drive or be driven is connected with the detection roller (4) through a shaft coupling (2); the other end of the detection roller (4) is provided with a distributor (5) and a signal transmission device (6); the outer surface of a roller core (7) of the detection roller (4) is provided with 1 to 6 concave through grooves along the axial direction; and a plurality of sets of piezoelectric sensors (12) are arranged in the through grooves and in combined assembly with an integral elastic press plate (11) and a roller sleeve (8). The detection roller (4) adopts a fully sealing structure, and can perform water cooling so as to adapt to the cold and hot rolled working conditions; and pressure signals are transmitted in wired and wireless modes, so high-speed on-line detection can be achieved. A strip shape instrument has high rigidity, quick response and high adapting speed; and the signals are not intervened by static load and the temperature. Therefore, the detection device has the advantages of stable signal, high detection precision, quick detection, adaptation to high-speed cold and hot rolling, long service life, and the like, and has important practical value for improving the flatness of the strips and achieving the high-speed rolling.

The invention discloses an extension pin Fan-out Panel Level ball grid array (BGA) package part and manufacture process thereof. The package part is mainly composed of a chip, a plastic package material, an insulation layer, metal copper, nickel porpezite, a solder ball, a soldering disk, a second insulation layer, a reversely-bonded chip, secondary metal copper distribution wires and a third insulation layer. The manufacture process comprises the following steps of thinning a wafer, scratching a wafer, reversely bonding a chip, plastically packing, tearing a film, turning, carrying out primary insulation treatment, punching holes first time, distributing copper wires first time, carrying out secondary insulation treatment, punching holes second time, distributing copper wires second time, carrying out third insulation treatment, punching holes third time, plating nickel porpezite, printing, reflow soldering and cutting. The manufacture process solve the wire cross problem, saves cost and improve electric performance and reliability of products.

A substrate structure for an integrated circuit package. The substrate is electrically connected to a circuit board and an integrated circuit. The substrate includes a plurality of metal sheets and glue. The metal sheets are arranged opposite to each other. Each of the metal sheets includes a first surface and a second surface. The glue is used for sealing the plurality of metal sheet to form the substrate. The first surfaces and second surfaces of the metal sheets are exposed to the outside of the glue so as to form a plurality of signal input terminals for electrically connecting to the integrated circuit and a plurality of signal output terminals for electrically connecting to the circuit board. Thus, the signal output terminals of the metal sheets can be electrically connected to the circuit board smoothly. Furthermore, the signal transmission distance between the integrated circuit and the circuit board can be shortened so that better signal transmission effect can be obtained. A method for manufacturing the substrate is also disclosed.

The invention discloses a detection method and system for an elevator load. The method comprises the steps of taking a no-load signal and a rated load signal of an elevator as reference signals; obtaining the real-time load signal of the elevator; respectively comparing the values of the reference signals and the ream-time load signal; and determining the load condition of the elevator according to the comparing result of the reference signals and the real-time load signal of the elevator. The system comprises a storage unit, a real-time load signal acquiring unit, a comparing unit, an analysis unit and an output unit; the storage unit and the real-time signal acquiring unit are electrically connected with the comparing unit respectively; the comparing unit is electrically connected with the analysis unit electrically connected with the output unit. By adopting the detection method and system for the elevator load, the real-time load signal of the elevator is more accurate, the load condition of the elevator judged according to a logic operation result by comparing the elevator real-time load signal, the elevator no-load signal and the elevator rated load signal more accords with real condition, and the safety of the elevator operation is higher.

The invention discloses an FCQFN encapsulation part preventing solder balls from collapsing and a manufacturing process of the FCQFN encapsulation part. The encapsulation part is mainly composed of a copper lead frame, a first green paint layer, green paint grooves, chips, tin-silver-copper protruded points, a plastic packaging body, etched pins, a second green paint layer and the solder balls. The first green paint layer coats the copper lead frame and is provided with the green paint grooves, and the chips and the tin-silver-copper protruded points are adhered to the green paint grooves. The plastic packaging body wraps the upper surface of the copper lead frame, the first green paint layer, the green paint grooves, the chips and the tin-silver-copper protruded points to form an overall circuit. The etched pins are formed by the etched copper lead frame, the etched copper lead frame comprises an etching thinning area, the second green paint layer coats the inside of the etching thinning area, and the solder balls are located on the etched pins. The manufacturing process comprises the following steps of wafer thinning, wafer scribing, green paint coating of the frame, exposure development, inverse chip assembly, backflow cleaning, plastic packaging, thinning of the back face of the frame, etching and separation of the pins, green paint filling, steel mesh printing and ball mounting, cutting, packaging and delivery. According to the FCQFN encapsulation part preventing the solder balls from collapsing and the manufacturing process of the FCQFN encapsulation part, short circuit is prevented, filling performance of plastic packaging materials is improved, and therefore product reliability is promoted.

The invention discloses a surface acoustic wave device based on a hafnium ferroelectric film and a film bulk acoustic wave device, the surface acoustic wave device comprises any one or two of a resonance/filtering assembly and a sensing assembly which are integrated on a substrate, and each assembly comprises a bottom electrode layer, a piezoelectric layer and a top electrode layer which are stacked in sequence; the film bulk acoustic wave device comprises any one or two of a resonance/filtering assembly and a sensing assembly which are integrated on a substrate, and each assembly comprises abottom electrode layer, a piezoelectric layer and a top electrode layer which are stacked in sequence; the piezoelectric layers in the two types of acoustic wave devices are respectively prepared fromhafnium ferroelectric films doped with zirconium, aluminum or silicon by using an atomic layer deposition process. Two types of sound wave devices and storage devices can be prepared on the hafnium ferroelectric film, environmental perception, signal processing and storage can be integrated, and the integration degree and the working speed of electronic equipment can be improved.

The invention provides a sensor assembly shell, a leadless thermopile sensor and a manufacturing method. The leadless thermopile sensor comprises the sensor assembly shell and a thermopile sensitive chip; the detection surface of the thermopile sensitive chip is correspondingly arranged below the top of the inner wall of the detection cavity of the sensor assembly shell; and an electrode bonding pad of at least one thermopile sensitive chip is in contact connection with an internal conductive convex block at the top of the detection cavity, so that the thermopile sensitive chip is electricallyconnected with the sensor assembly shell. According to the invention, the assembly process of the lead is reduced, the operation difficulty of the assembly process is greatly simplified, the assemblyefficiency is improved, and the technical problem of complex process of the existing thermopile sensor is solved; meanwhile, in terms of structural design, a lead binding space is omitted, the overall size of the leadless thermopile sensor is greatly reduced, and the problem that application of a thermopile sensor in the prior art is limited in electronic products due to the fact that the size ofthe thermopile sensor is too large is effectively solved.

Provided is a vertical probe card, the vertical probe card includes: a printed circuit board (PCB) including a bottom hole and a PCB pad surrounding the bottom hole; a cover plate disposed on the PCB and including a cover hole, where the cover hole and the bottom hole are disposed coaxial with each other and form a receiving space; and a probe received in the receiving space. The probe includes a probe head passing through the cover hole to extend out of the cover plate and to contact with a chip, where an end, which is provided with the probe head, of the probe is a first end; and a protruding portion disposed in the mid-portion of the probe and in contact with the PCB pad, where a part between the probe head and the protruding portion of the probe and the protruding portion are conductors.

The invention relates to a safety automatic pouring system comprising a mobile platform, pouring robots arranged on the mobile platform, a melting furnace arranged on one end of the mobile platform, a fence surrounding the mobile platform, and a plurality of casting machines arranged along the mobile platform and outside the fence; a position, corresponding to the melting furnace, on the fence is provided with an opening; positions, corresponding to the casting machines, on the fence are provided with double doors; a gravity sensor is arranged below a worker operation area of the casting machine; when the gravity sensor detects a person in the worker operation area, the double door is closed, and the pouring robot pouring signal is locked. The safety automatic pouring system is high in pouring efficiency, easy in operations, and safe.

The invention provides a millimeter wave packaging antenna based on a fan-out packaging technology. The millimeter wave packaging antenna comprises a chip packaging layer, an antenna radiation structure, an external substrate bonding pad, a reflection metal layer and a first passivation layer. The external substrate bonding pad is arranged below the chip packaging layer, and the reflective metal layer is arranged above the chip packaging layer; the first passivation layer is arranged above the reflective metal layer, and the antenna radiation structure is arranged above the first passivation layer; the antenna radiation structure carries out signal transmission with the chip packaging layer through the conductor. And the chip packaging layer performs signal transmission with the external substrate bonding pad through the conductor. According to the antenna structure, signal transmission is directly carried out through the conductor and the chip packaging layer, and the chip packaging layer is longitudinally and electrically connected with the bonding pad of the external substrate, so that the signal transmission distance between the antenna and the chip is greatly shortened, attenuation and loss of signals in the transmission process are effectively reduced, and the transmission performance of the antenna is improved.

A laser diode device includes a laser diode component, a lens, a first carrying element, a driving chip and a second carrying element. The first carrying element receives the laser diode component and the lens. The second carrying element receives the driving chip and is disposed below the first carrying element to carry the first carrying element and electrically connected to the first carrying element.