Abstract:
A semiconductor chip package with cooling arrangement includes a heat sink adapted for covering at least a semiconductor chip, characterized in that said heat sink has an inverted U-shaped cross section thereby forming a recess at an inner bottom thereof adapted for covering at least a semiconductor chip and a plurality of pins extending downwardly from a circumferential lower edge of said heat sink, each of said pins being formed with a neck, an enlarged head, and an open slot separating said neck and said enlarged head into two portions, whereby the package can rapidly remove heat from the semiconductor chip, filter noise and reduce inductance.
Abstract:
A process of manufacturing thin ball array substrates includes the steps of: using a layer of polyimide film as a carrier, electroplating a thin copper layer on the polyimide film, electroplating a thick copper layer on the thin copper layer, applying photosensitive coating layers on both sides of the carrier, mounting two masks with optically transmissible circuit tracks on two sides of the carrier and then processing the carrier with exposure treatment, processing the carrier with development treatment so as to remove the photosensitive coating layers aligned with the circuit track thereby forming recessed circuit tracks on the photosensitive coating layers, electroplating a copper layer on a top of the carrier thereby forming an additional copper layer on the thick copper layer, etching a bottom of the carrier to remove the upper recessed circuit track thereon, coating the copper layer on the upper recessed circuit track with soldering metallic material so as to make a top of the soldering metallic material, washing away the photosensitive coating layers with chemical agent, and removing surplus copper layer to remain in circuit lines and the soldering metallic material, whereby a thin ball grid array substrate with thicker circuit lines without remaining electroplating lines can be obtained.
Abstract:
A compound having the formula: in which R1, R2, R3, T, W, m, x, and y are defined as in the specification. Also disclosed is a method of treating enterovirus infection by using a compound described above.
Abstract:
A hub assembly for a disk brake of a bicycle includes a support shaft, a hub body pivotally mounted on the support shaft and provided with two drum disks, a mounting portion protruding from one of the drum disks, a threaded section protruding from the mounting portion, a brake disk resting on the end face of the mounting portion, and a chainwheel screwed onto the threaded section and pressing the brake disk so that the brake disk is clamped between the mounting portion and the chainwheel closely. Thus, the brake disk is mounted on and detached from the hub body by screwing and unscrewing the chainwheel, so that the hub assembly is assembled and disassembled easily and rapidly, thereby facilitating a user assembling and disassembling the hub assembly.
Abstract:
A method of forming cylindrical bumps on a substrate for integrated circuits includes the steps of: forming copper circuits on a board of a substrate by means of electroplating; covering said board with a screening material; forming openings in said screening material to align with copper circuits on said board, filling pure copper or high melting point metal into said openings by electroplating to form cylindrical projections; forming a layer of solder alloy on an upper end of each of said cylindrical projections to be even with an upper surface of said screening material, and removing said screening material to leave the cylindrical bumps, whereby the engagement operation between the die and the substrate can be facilitated and the manufacture of the die can be easier.
Abstract:
A method of forming metal bumps on a wafer includes the steps of adhering a heat-resistant and steady synthetic tape on the top of the wafer, punching holes through the synthetic tape to form a blind hole on the synthetic tape above the under-bump-metallurgy layer (UBM), filling solder paste into the blind hole by a pusher, melting and then cooling the solder paste into a solder block removing the synthetic tape to expose the solder block, and melting the solder block to form a ball-shaped solder bump.
Abstract:
Fetuin-beads, a manufacturing method thereof and a method of concentrating and detecting influenza virus by the fetuin-beads are disclosed. The method of concentrating and detecting an influenza virus by the fetuin-beads comprises the steps of preparing fetuin-beads; mixing the fetuin-beads and a solution capable of providing salt ions to obtain a fetuin-bead solution; mixing the fetuin-bead solution and a sample comprising the influenza virus to concentrate the influenza virus onto the fetuin-beads to obtain a plurality of fetuin bead-influenza virus combinations; and collecting the fetuin bead-influenza virus combinations and using a virus testing method to detect the influenza virus on the fetuin bead-influenza virus combinations. Therefore, an easy and fast method to detect the influenza virus with timeliness and high accuracy is provided.
Abstract:
A portable long-running lighting device having a manual power generator of the present invention can generate electricity effectively and also can radiate for a long time. The portable long-running lighting device includes a manual power generator module, an electricity storage module, an LED (light-emitting diode) module and a housing. The manual power generator module includes an electricity generator, a transmission mechanism and a base. The electricity storage module is coupled to an electricity generator of the manual power generator module. The LED module includes a plurality of light-emitting diodes and a circuit. The circuit further includes a power saving circuit coupled between the electricity storage module and the light-emitting diodes. With a three-stage discharge mode, a discharge speed of the electricity storage module can be stabilized, so as to achieve an electricity saving effect.
Abstract:
A device for making metal bumps includes a hard conical tubular member having a vertical conical passage at an upper portion thereof, a bell shaped chamber at a lower portion thereof which is larger than the vertical conical passage in diameter, located under and communicated with the vertical conical passage, and a circular recess which is larger than the bell shaped chamber in diameter, located under and communicated with the bell shaped chamber, thereby forming a capillary tube with a surface.