Abstract: A chip-packaging substrate and test method therefor. The chip-packaging substrate includes at least one package area and a connection area enclosed by and connected to the package areas. A test circuit is arranged within the connection area, passing through at least two wire layers and the insulation layer therebetween. The test circuit electrically connects the first electrodes. Failure of the chip-packaging substrate is detected when the test circuit is open between any two electrodes.

Abstract: The present invention relates to a suction device with telescopic evacuating pipes which includes a cantilever, a plurality of glide pieces, a pipe-collecting piece and a plurality of telescopic evacuating pipes. The cantilever is provided with a glide groove at both sides thereof. The glide pieces are movable along the glide groove of the cantilever and are positioned by fastening knobs. Each of the glide pieces has a vacuum sucker 132 at the bottom thereof. A first connector is arranged at one side of the glide pieces and used to connect through the internal piping with the vacuum sucker. The pipe-collecting piece is installed at the inner end of the cantilever and is used to join second connectors in connection with a vacuum generator through hosepipes. One end of the telescopic evacuating pipe is fastened at the outer end of the pipe-collecting piece while the other end is connected to the first connector.

Abstract: A flashlight has a barrel formed with a conductive inner surface to retain batteries therein, a head attached to one end of the barrel and having a light emitting module retained inside the head, wherein two electrodes of the light emitting module are respectively and electrically contacted with one electrode of the batteries and the conductive inner surface of the barrel. A tail cap is provided to enclose the other end of the barrel, wherein the screwing rotation between the tail cap and the barrel determines whether an electrical loop is closed or open so as to control the activation of the flashlight.

Abstract: A self-adhesive bulletin board assembly includes a bulletin board with a surface coated with a first adhesive layer that is adapted to be attached to a support surface, and a transparent sheet with opposite first and second surfaces that are coated with second and third adhesive layers, respectively. The transparent sheet is sandwiched between first and second protecting sheets prior to attachment of the same to the bulletin board, and is capable of visually exposing the bulletin board when removed from the first and second protecting sheets and attached to the bulletin board by one of the second and third adhesive layers.

Abstract: An inverter for driving multiple discharge lamps. The inverter has a transformer for driving a first discharge lamp and a second discharge lamp. The inverter also includes a first balancing circuit connected in series with the first discharge lamp and a second balancing circuit connected in series with the second discharge lamp. According to a matching signal, the first and the second balancing circuits adjust a first lamp current through the first discharge lamp and a second lamp current through the second discharge lamp, respectively. A comparator is provided to receive a first sensing signal from the first balancing circuit and a second sensing signal from the second balancing circuit. Comparing the first sensing signal with the second sensing signal, the comparator generates the matching signal which controls the first and the second balancing circuits to equalize the first lamp current and the second lamp current.

Abstract: A piezoelectric transducer apparatus comprises at least one piezoelectric unit and a body structure. Each of the at least one piezoelectric unit has a piezoelectric block and at least one pair of electrodes. Each electrode is adhered to one surface of the piezoelectric block. Each of the at least one piezoelectric unit is adhered to the surface of the body structure with the electrode exposed externally. The electrode shape of the electrode of each of the at least one piezoelectric unit is matched to a desired body strain pattern existing in the body structure wherein the electrode of each of the at least one piezoelectric unit may excite a strain pattern in the body structure that is the same as the desired body strain pattern. The body structure of any structural configuration may have a resolved electrode shape that results in the disengagement of the phase and gain characteristics of the piezoelectric construction based on that particular body structure.

Abstract: A signal-processing method for performing a coordinate transformation operation and a quantization operation on an input data to obtain quantization outputs, and a signal-processing device therefor. A search strategy based on the characteristic of the input data is established. By using the search strategy, the End of Block (EOB) is predicted and the calculation structure is determined by the predicted EOB.

Abstract: A note pad includes a plurality of stacked self-stick transparent note sheets. Each of the note sheets includes a transparent plastic film coated with a transparent coating layer and a pressure-sensitive adhesive layer. The coating layer is prepared from a mixture of a binder and at least one pigment. The weight ratio of the binder to the pigment ranges from 1:1 to 1:10. Each of the note sheets has an opacity of less than 45%.

Abstract: An alignment apparatus for an integrated circuit (IC) test handler is disclosed. The alignment apparatus of the present invention installs a plurality of first guide pins and a plurality of second guide pins on a load board stiffener, and the first and second guide pins penetrate a load board and a surface mount matrix (SMM) frame member used for fastening a SMM sequentially from the backsides of load board and SMM frame member. When an IC device packaged by the ball grid array (BGA) method is in an electrical test, the present invention can shorten the working distance of a test arm of the IC test handler for enhancing the stability of testing process, thereby promoting the testing yield. Furthermore, with a shorter working distance, the output force from the test arm is smaller, so that the force acted on solder balls located at the bottom of the BGA device is smaller, thereby prolonging the service life of SMM contacting the solder balls.

Abstract: A piezoelectric transducer apparatus comprises at least one piezoelectric unit and a body structure. Each of the at least one piezoelectric unit has a piezoelectric block and at least one pair of electrodes. Each electrode is adhered to one surface of the piezoelectric block. Each of the at least one piezoelectric unit is adhered to the surface of the body structure with the electrode exposed externally. The transducer apparatus has a generalized sensor equation which can be modeled in a fourth-order partial differential equation mathematical system. At least one of the electrodes or the piezoelectric block of each of the at least one piezoelectric unit has a shape matched to a desired body strain pattern existing in the body structure wherein the electrode of each of the at least one piezoelectric unit may excite a strain pattern in the body structure that is the same as the desired body strain pattern.

Abstract: A plate member carrier is constructed to include a suction device adapted to suck and transfer the workpiece, a first four-bar linkage adapted to keep the suction device in horizontal, a second four-bar linkage adapted to prohibit the suction device from transverse displacement, and a cam adapted to control vertical movement of the suction device subject to a simple harmonic motion curve.

Abstract: A tool for placing an identifying mark on a semiconductor wafer has a bundle of optical fibers that can be illuminated in a pattern representing an identifying character. Light from the fibers is focused on a photoresist layer during wafer manufacture and a pattern of dots is etched into the wafer to represent the character. The dots are too small to be seen with the human eye but the character can be read by a human or by a machine. The character is etched as part of a conventional etch step in manufacturing the wafer and it is easily repeated as a series of manufacturing steps obscure the original mark.

Abstract: A motion sensing system utilizing piezoelectric laminates with predetermined surface electrode patterns disposed thereon utilizes a frequency selector to pass motion waves of predetermined frequencies and an electrical circuit for processing the electrical signals for transmission to an activating device for appropriate activation. In particular, the frequency selector is a low frequency bandpass filter for free-fall acceleration wave frequencies. By directing appropriate action, the present invention increases the applicability of the device upon which it is mounted (e.g., for military or other hostile environment use), decreases the possibility of damage, and lengthens its useful life.

Abstract: A collar clip is integrally made of a plastic material by injection molding and is formed of a connection portion, a front plate, and a rear plate. The front plate is connected at one end with the connection portion and is provided at other end with a holding hole. The rear plate is connected at one end with the connection portion and is provided at other end with a protrusion corresponding in location to and engageable with the holding hole, and a retaining portion for retaining the bonding wire of a communication device.

Abstract: A piezoelectric transducer apparatus comprises at least one piezoelectric unit and a body structure. Each of the at least one piezoelectric unit has a piezoelectric block and at least one pair of electrodes. Each electrode is adhered to one surface of the piezoelectric block. Each of the at least one piezoelectric unit is adhered to the surface of the body structure with the electrode exposed externally. The transducer apparatus has a generalized sensor equation which can be modeled in a fourth-order partial differential equation mathematical system. At least one of the electrodes or the piezoelectric block of each of the at least one piezoelectric unit has a shape matched to a desired body strain pattern existing in the body structure wherein the electrode of each of the at least one piezoelectric unit may excite a strain pattern in the body structure that is the same as the desired body strain pattern.

Abstract: A piezoelectric transducer apparatus comprises at least one piezoelectric unit and a body structure. Each of the at least one piezoelectric unit has a piezoelectric block and at least one pair of electrodes. Each electrode is adhered to one surface of the piezoelectric block. Each of the at least one piezoelectric unit is adhered to the surface of the body structure with the electrode exposed externally. The electrode shape of the electrode of each of the at least one piezoelectric unit is matched to a desired body strain pattern existing in the body structure wherein the electrode of each of the at least one piezoelectric unit may excite a strain pattern in the body structure that is the same as the desired body strain pattern. The body structure of any structural configuration may have a resolved electrode shape that results in the disengagement of the phase and gain characteristics of the piezoelectric construction based on that particular body structure.

Abstract: An apparatus for preventing electrostatic destruction of integrated circuits coats an electrostatic agent on surfaces of the integrated circuits to avoid accumulation of static electricity caused by dynamic contact friction. The apparatus comprises a belt, at least one motor, at least one spray nozzle, at least one dispenser or controller and at least one photo switch. The integrated circuits are placed on the belt. The motor drives the belt and therefore the integrated circuits step by step to the spray nozzle to coat the electrostatic agent on the surfaces of the integrated circuits. The controller controls the output rate of the electrostatic agent from the spray nozzle. The photo switch is connected to the spray nozzle and dispenser to detect the integrated circuits as they pass the spray nozzle.

Abstract: The present invention provides a shielding apparatus installed over a machine in a clean room to protect the machine. The shielding apparatus comprises at least two supporting beams, and a plurality of rectangular-shaped plate flaps in parallel to each other. The flaps are connected to the supporting beams at an angle, and each flap has areas overlapping with its neighboring flap along a vertical cross-section. Each flap is an anti-acid zinc-plated steel plate with a drain piping connected its bottom to collect and deliver processing liquids.

Abstract: The present invention provides a shielding apparatus installed over a machine in a clean room to protect the machine. The shielding apparatus comprises at least two supporting beams, and a plurality of rectangular-shaped plate flaps in parallel to each other. The flaps are connected to the supporting beams at an angle, and each flap has areas overlapping with its neighboring flap along a vertical cross-section. Each flap is an anti-acid zinc-plated steel plate with a drain piping connected its bottom to collect and deliver processing liquids.

Abstract: A hammock includes a bed portion connected between two dowel assemblies. Each dowel assembly has a main tube with two open ends and two end sections retractably received in the two open ends of the main tube. Each of the end section has an engaging slot for being connected with two clews.