66 results about "Bond failure" patented technology

When a semiconductor chip is mounted on a mount substrate by bonding bumps, bonding failure is caused by misalignment between the bumps.

Before a semiconductor chip having a plurality of bumps is mounted on a mount substrate (3) having a plurality of bumps (4) by flip chip bonding, a resist layer (5) having a thickness larger than that of the bumps (4) is formed on the mount substrate (3) with the bumps. By patterning the resist layer (5), projecting guides (5A) of semicircular cross section are formed on the mount substrate (3) so as to protrude near the bumps (4) and from a surface on which the bumps (4) are provided, and to have guide faces (curved faces) pointing toward the bumps (4).

A polybutylene based hot melt adhesive composition having a variety of end uses, particularly in construction and elastic attachment applications for nonwoven articles such as disposable diapers. Unlike typical hot melt adhesives, the present composition can withstand high peel and shear loads at elevated temperatures for extended periods of time without experiencing catastrophic bond failure. The composition includes polybutylene polymer or a mixture of polybutylene and polyolefin polymers, and a stabilizer, with the remaining ingredients chosen from one or more of a polyolefin polymer, a tackifier resin, a plasticizer, or a wax. The hot melt adhesive composition can be applied using common application techniques such as extruding or spraying.

An insulated rail joint assembly comprises a rail with a thick web section, held in place by joint bars and secured with electrically isolated fasteners. The joint bars have non-uniform cross-sections, being shaped with a thicker midsection area and thinner ends. Electrically non-conductive shear pins through the rail and the joint bars provide shear resistance and prevent glue bond failure. High strength cloth between the rail ends and between the rail and the joint bars strengthens the joint, as does an insulating rail clip resiliently fastened to an insulating tie plate, which itself may be supported on a cross tie of increased width.

A manufacturing method for a semiconductor light emitting device is provided. The method includes preparing a first wafer in which at least one semiconductor layer including the emitter layer is formed; disposing a second wafer transparent to an emission wavelength of the emitter layer on the surface of the first wafer; providing a bonding failure prevention structure to at least either the first wafer or the second wafer for preventing bonding failures of the first wafer and the second wafer; and applying compressive force to a contact face between the first wafer and the second wafer while at the same time, heating the contact face. The first and second wafers can be bonded across their entire surfaces without causing bonding failure.

Disclosed is a method of detecting a bonding failure of a wire bonder, which comprises a bonding tool operative to form an electrical connection between a semiconductor die and a substrate using a bonding wire. The method comprises the steps of: forming a first wire bond on a first surface located on the semiconductor die using the bonding tool and the bonding wire; forming a second wire bond on a second surface located on the substrate using the bonding tool and the bonding wire such that a wire loop connects the first and second wire bonds, wherein the first surface is not electrically-conductive; moving the bonding tool in a direction away from the second wire bond to break the bonding wire from the second wire bond; detecting whether the second wire bond remains bonded to the substrate; and determining an occurrence of the bonding failure if the second wire bond is no longer bonded to the substrate.

The invention relates to large-specification recombination composite structural wood and provides a manufacturing method. Scrimber, adhesive, a veneer and a paper board are used as raw materials, and the large-specification recombination composite structural wood is manufactured through the methods of longitudinal spreading, multi-layer compounding and optimization of gluing interface structure and the like. The technical bottleneck such as cracks, bonding failure, low bonding strength and large physical mechanics performance loss for preventing the scrimber from being used in manufacturing of the large-specification recombination composite structural wood due to poor gluing in a secondary gluing process of the scrimber is overcome. The large-specification recombination composite structural wood can be used for manufacturing beams, columns, furniture and floors.

The invention discloses a dynamic fatigue evolution test method for rubber and fiber cord thread bonding, by means of connecting a fixture with an MTS elastomer test system, the method realizes simulation of continuous evolution process of bonding failure of rubber and a fiber cord thread under various conditions of use in multiple modes such as constant stress, constant strain as well as alternating load and alternating frequency. The beneficial effects of the method are that: the method is simple to operate, the data is reliable, the reproducibility is high, the test process has time continuity, so the method can better simulate the evolution process of bonding fatigue rupture of multiple kinds of rubber and various fiber cord thread composite materials under the condition of real stress, and has important guiding significance for predicting the service life of rubber products,thereby having a broad application prospect.

Provided are orthodontic corrector devices, related assemblies and methods which direct forces within the oral cavity. These corrector devices and assemblies include a flexible cantilever which is coupled to both a connector component and a force module. The cantilever acts to isolate adjacent components from mastication forces encountered during treatment. By resiliently deflecting in response to these inadvertent forces, the cantilever reduces the likelihood of device breakage and bond failure. Upon removal of these forces, the cantilever returns to its original orientation thereby maintaining the proper alignment of the corrector. Advantageously, the cantilever also allows the force module to be positioned further in the distal direction thereby enabling a greater range of connection options.

A method of recovering a bonding apparatus from a bonding failure to resume a normal operating state for semiconductor chip fabrication is disclosed. The bonding apparatus comprises: i) a bonding tool for bonding a wire between a semiconductor chip and a substrate; and ii) a position sensor. Specifically, the method comprises the steps of: a) the position sensor determining a position of the bonding tool when the bonding tool contacts a surface to bond the wire to the substrate; b) the bonding apparatus detecting a bonding failure caused by detachment of the semiconductor from the substrate based on the position of the bonding tool; and c) the bonding apparatus detaching the semiconductor chip from the wire.

The invention relates to the field of water jet looms, in particular to a water distribution valve spool of a water jet loom. The water distribution valve spool comprises a water distribution shaft and a water distribution sleeve, the water distribution shaft is fixedly arranged in the water distribution sleeve, and holes communicated mutually are formed in the water distribution shaft and the water distribution sleeve respectively. Limiting planes are arranged between the water distribution shaft and the water distribution sleeve, so that the water distribution shaft and the water distribution sleeve are prevented from rotating relatively due to bonding failure, as a result of water supply instability; the water distribution valve spool is reliable and stable in structure, and the requirement on normal water supply of the water jet loom is met.

The present invention provides an improved integrated circuit technique for increasing the reliability of wire-bonds in an integrated circuit by increasing the contact angle between certain pins and their respective wire-bonds, particularly those pins otherwise most susceptible to wire-bond failure, i.e., those pins conventionally located toward the corners of a conventional integrated circuit. By doing so, the overall length of the wire-bonds in a chip will be reduced, which in turn can result in further reduction of the probability of wire-bond failures. In a disclosed embodiment, a five or more sided integrated circuit shape is introduced wherein pads on up to four sides of an integrated circuit wafer chip are bonded to pins supported on eight edges of an integrated circuit package. An integrated circuit having at least five pin-supporting edges renders more robust wire-bond angles for any given integrated circuit package size.

An electronic component package includes: an insulating carrier substrate; a connection wiring that is provided on one side of the carrier substrate; an IC chip that is connected to the connection wiring; an external connection land that is disposed on the other side of the carrier substrate and is connected to the connection wiring via a wiring in the carrier substrate; and a solder ball that is disposed on the external connection land. A region of the external connection land that can be bonded to the solder ball has an outer shape that includes at least one arc portion and at least one straight portion. With this configuration, it is possible to provide an electronic component mounted apparatus in which bonding failure of the external connection land and the circuit board-side land with the solder ball can be reduced, and the bonding state can be easily inspected, and a method of inspecting a bonding portion therein.

The invention provides a bridge deck reinforcing method. The method comprises the steps of drilling, wherein reinforcing holes are drilled in the top surface and/or bottom surface of a bridge deck; glue filling, wherein the reinforcing holes are filled with steel bar embedding glue; steel bar distribution, wherein FRP bars are placed in the reinforcing holes. Compared with a surface bonding method in the prior art, the reinforcing method has the advantages that the FRP bars are protected and limited by a concrete structure of the bridge deck after being placed in the reinforcing holes without being affected by the external environment basically, so that FRP bar and concrete bonding property is improved and bonding failure caused by edge concrete cracking is effectively avoided. Compared with a surface-surface mounting method in the prior art, the reinforcing method has the advantage that reinforcement is conducted by drilling concrete and then placing the FRP bars in the drilled reinforcing holes instead of being conducted on the surface layer of concrete, so that damage to a concrete protection layer is avoided.

A vehicular lamp in which bonding failure between a front lens and a lamp body is prevented while enhancing the bonding strength and improving the quality of the outer appearance around the bonded surface therebetween. An end surface of a seal leg of a front lens and a receiving surface of a lamp body are bonded through laser beam welding so as to improve the outer appearance quality of the area around the bonded surfaces. The end surface is formed on an end portion of the seal leg that is bent and extended outward at a predetermined angle with respect to the bonding direction. The laser beam is irradiated onto the receiving surface through the end portion from a direction substantially orthogonal to the end surface. The resultant permeation distance of the laser beam is made short, resulting in a sufficient amount of irradiation energy. When pressure is applied to the base end portion of the seal leg by pressing on the front lens, the end surface and the receiving surface are brought into abutment in the width direction with uniform pressure.

The invention relates to a testing device and method for bond stress between a steel strand and concrete in a pre-tensioning-method member. According to the device, a force measuring sensor for detecting the bond stress between the steel strand and the concrete in the pre-tensioning-method member is arranged on the top of a supporting frame; a sleeve placing frame is arranged at the bottom of the force measuring sensor; a sleeve for fixing the pre-tensioning-method member is arranged at the center of the bottom of the sleeve placing frame; the sleeve is fixed by the sleeve placing frame; a downward pull force load is applied to the steel strand in the pre-tensioning-method member by using a force transferring assembly, the load and the displacement of the steel strand are recorded in real time by the force measuring sensor and a displacement sensor, so as to determine the load corresponding to the moment of bonding failure between the steel strand and the concrete, test data are relatively accurate and reliable, the measuring error is greatly reduced, and a reliable evidence for the application and the design of the pre-tensioning-method member is provided.

The invention discloses a method for predicting the bonding strength of a steel strand under cracking and failures of rotation and a protection layer. The method comprises the steps that a relationalexpression between the limit bonding strength and the radial stress of a bonding failure face is established, the radial stress of the bonding failure face when concrete split bonding fails is determined, the critical radial stress of the bonding failure face when a concrete split failure is turned to a drawing rotation failure is determined, and the minimum thickness of the concrete protection layer under the critical radial pressure stress is determined. Through existing drawing experiment data related to the steel strand, the method is compared and evaluated, and in combination with the twokinds of failure modes, the precision of the method is verified. By considering a twisting spiral structure and a rotation bonding mechanism of the steel strand, the limit bonding strength of the single prestress steel strand under the two kinds of failure modes including the concrete split failure and the drawing rotation failure can be effectively simulated and predicted, and the method has high precision; the defect of research related to a prestress steel strand and concrete theoretical bonding model is overcome.

The invention discloses a reverse osmosis membrane element and a sealing case thereof. The reverse osmosis membrane element comprises a reverse osmosis membrane body, a water passage adapter connectedwith one end of the reverse osmosis membrane body, and the sealing case connected in a sleeve mode to the outer surface of the reverse osmosis membrane body, wherein the sealing case comprises a sealing case body in a hollow cylindrical shape; the outer circumference of the upper portion of the sealing case body is provided with an O-type sealing ring, and the sealing case body and the O-type sealing ring are integrally made of high-molecular food-grade materials. According to the reverse osmosis membrane element, the sealing case saves glue applied onto the back surface and tightly seals upthe surface of the reverse osmosis membrane body through elasticity, thereby effectively ensuring sanitary safety of the reverse osmosis membrane element; besides, with the O-type sealing ring, the sealing case saves auxiliary sealing by white tapes, simplifies assembling processes and meanwhile avoids the risk of internal leakage of a reverse osmosis filter element due to bonding failure betweenthe white tapes and concentrated water sealing rings as well as external tapes.

The invention relates to a corner longitudinal reinforcement centralized and profiled bar built-in reinforcing structure of an RC (Reinforced Concrete) rectangular column and a preparation method thereof, belonging to the field of earthquake resistance strengthening of RC columns. According to the corner longitudinal reinforcement centralized and profiled bar built-in reinforcing structure and the preparation method thereof, longitudinal reinforcements at the four corners of a cross section of an original rectangular column are centralized based on the form that reinforcements are distributed on the cross section of the original rectangular column, so as to form an isosceles-right-triangle delta-shaped longitudinal reinforcement distributed form, and reinforcing inequilateral angle irons of the four corners of the cross section of the rectangular column are fixed at the outer sides of the two ends of an initially-reinforced reinforcement cage through steel reinforcing rods. Due to the form, a good binding effect can be provided for concrete, and the concrete can be prevented from shedding too early under the action of oblique earthquakes. The method comprises the following specific operating steps: forming the reinforcement cage, mounting the angle irons and forming the reinforcing structure. The corner longitudinal reinforcement centralized and profiled bar built-in reinforcing structure and the preparation method thereof have the advantages that the condition that the RC square column is not subjected to bond failure under the action of the oblique earthquakes can be guaranteed on the premise that the condition that the structure is designed according to X and Y principal-axis directions is basically not changed, and the oblique bearing capacity, ductility and earthquake resistance of the column are improved greatly.

The invention discloses a preparation method of a soda ash metal atom micro air chamber based on an MEMS (Micro Electro Mechanical System) process. The preparation method comprises the steps of RCA (Reactive Clear Adhesive) cleaning, photoetching, etching low-temperature anodic bonding and scribing. The high-precision, low-stress and high-purity MEMS atomic air chamber can be manufactured, and (1)the noise problem caused by atomic depolarization relaxation due to the fact that a conventional glass-silicon-glass atomic air chamber is different in quality is avoided; (2) the problem of poor airtightness caused by weak atom bonding force of different bonding layers is solved by anodic bonding; (3) the problem of bonding failure or low air tightness caused by poor surface flatness is solved;(4) the problem of low density caused by overflow of alkali metal is solved; (5) attenuation or damage of device performance can be avoided through low-temperature bonding, and residual stress and buckling deformation introduced by high-temperature bonding are reduced or eliminated; and (6) the problem that residual reactants are easily left during preparation of the single-chamber atomic gas chamber to influence subsequent light transmission is solved, and the volume size of the single-chamber atomic gas chamber is smaller than that of a double-chamber atomic gas chamber.

The invention discloses a detection device and a detection method for second bonding points. The detection device for the second bonding points comprises a machine body, a transfer station fixedly installed on the machine body, a detection mechanism arranged at one side of the transfer station, and a sorting mechanism arranged on the machine body, wherein the detection mechanism comprises an installation frame fixedly connected to the machine body, an optical detection component installed on the installation frame, and an electrical performance detection device installed at one side of the transfer station. According to the detection device and the detection method for the second bonding points, optical detection and electric detection are carried out on the second bonding points of bondedchips, bonding failure points and the layering condition or the pollution condition of the bonding points are inspected, the welding firmness degrees of the second bonding points are evaluated, and the chips with unstable second bonding points are screened, so that the production cost is reduced.

The invention provides an MEMS device, a preparation method and an electronic device. The MEMS device includes: a back plate; The interconnection layer positioned on the back plate; Wherein the interconnection layer comprises a first conductive layer and a second conductive layer which are sequentially stacked, the interconnection layer further comprises a diffusion barrier layer, and the diffusion barrier layer is arranged between the first conductive layer and the second conductive layer and used for preventing mutual diffusion between the first conductive layer and the second conductive layer. According to the invention, the diffusion barrier layer is arranged to prevent mutual diffusion between the first conductive layer and the second conductive layer, so that the problem of bonding failure of the interconnection layer is solved, and the performance and the yield of the MEMS device are further improved.