Abstract:
A pair of rim portions 4a and 4b is formed in the shape of a discontinuous segmental circular ring, which includes cutout portions 8a and 8b, respectively, at one position. The cutout portions of the respective rim portions are concentrically disposed so as to face each other with a predetermined interval therebetween in an axial direction while having the same phase in a circumferential direction. A plurality of pillar portions 6 form pockets 10 where rollers 14 are retained. An expandable elastic connecting portion 12, which connects one end portion 84a of one rim portion in the circumferential direction to the other end portion 82b of the other rim portion in the circumferential direction, is provided at the pair of rim portions. A convex portion 86a, which protrudes toward one end portion, is formed at the other end portion 82a of one rim portion in the circumferential direction, and a concave portion 88a, which is recessed so as to correspond to the convex portion formed at the other end portion, is formed at the one end portion. A convex portion 86b, which protrudes toward the other end portion, is formed at one end portion 84b of the other rim portion in the circumferential direction, and a concave portion 88b, which is recessed so as to correspond to the convex portion formed at the one end portion, is formed at the other end portion.
Abstract:
A multichip module includes a package substrate, a first semiconductor device, a second semiconductor device and a conductive bump. The first semiconductor device is flip-chip bonded to the package substrate. The first semiconductor device includes a first chip pad on a surface thereof. The second semiconductor device is mounted on the first semiconductor device. The second semiconductor device includes a second chip pad facing the first chip pad. The conductive bump connects the first chip pad to the second chip pad. The conductive bump includes a first metallic body that has a first diffusion rate and a second metallic body that has a second diffusion rate lower than the first diffusion rate.
Abstract:
According to an aspect of the invention, an electronic part includes a substrate having a first planar surface, a first bump affixed to the first planar surface of the substrate, a second bump affixed to the first planar surface of the substrate a predetermined distance from the first bump, a MEMS chip including a element, the MEMS chip coupled to the first bump and the second bump, the MEMS chip distanced from the first planar surface, an adhesive region bonding with the first bump, the substrate and the MEMS chip.
Abstract:
A trench IGBT is disclosed which includes a semiconductor substrate having formed therein a set of cell trenches formed centrally and a set of annular guard trenches concentrically surrounding the cell trenches. The cell trenches receive cell trench conductors via cell trench insulators for providing IGBT cells. The guard trenches receive guard trench conductors via guard trench insulators for enabling the IGBT to withstand higher voltages through mitigation of field concentrations. Capacitive coupling conductors overlie the guard trench conductors via a dielectric layer, each for capacitively coupling together two neighboring ones of the guard trench conductors. The capacitive coupling conductors are easily adjustably variable in shape, size and placement relative to the guard trench conductors for causing the individual guard trench conductors to possess potentials for an optimal contour of the depletion layer.
Abstract:
A terminal joining structure includes a terminal having a tubular barrel portion and a flange portion that is integrally formed at the axis-direction end of the barrel portion, a conductor substrate on which is opened a through-hole for inserting the barrel portion, and a ring that fits on the barrel portion on the opposite side of the conductor substrate. On the barrel portion is formed a taper that increases in diameter toward the flange portion. The diameter of the larger-diameter portion of the taper is larger than the inner diameter of the through-hole. The terminal is caulked to cause radially outward expansion of an end part of the barrel portion, which passes through the ring, on the opposite side of the conductor substrate and is fixed to the conductor substrate together with the ring.
Abstract:
The present application is a technique to be used for mounting a heavy article to be mounted from a packed body to a rack or the like. In this application, amounting jig is used for a moving and installation procedure, the mounting jig including a cover member that is detachably secured to a table of an elevating lift having an article to be mounted placed thereon for transportation, the cover member covering an upper surface of the table, an upper surface of the cover member being provided with a low friction treatment.
Abstract:
An RFID tag includes an inlet on which an antenna pattern serving as an antenna for communication and an IC chip electrically connected to the antenna pattern are mounted. The RFID tag also includes an exterior body that encloses the inlet from outside and a hollow space that is formed by the inlet and the exterior body and that is filled with gas or a gel material.
Abstract:
It is related to a head control method. The head control method controls a protruding flying height of a head in which an energization amount applied to a heater element in the head to thermally expands the head. The head control method includes a resistance-value measuring step of measuring a resistance value of the storage element, an energization-amount calculating step of calculating an energization amount applied to the heater element such that the resistance value measured in the resistance-value measuring step reaches a reference resistance value, and a heater control step of performing control to apply the energization amount calculated in the energization-amount calculating step to the heater element.
Abstract:
There is provided a package of which package objective article is transferred to an up-and-down lift easily even if the package objective article is heavy.A package includes a base portion. The base portion includes a top face opening type of an outer box and a top face opening type of an inner box housed in the outer box. A beam is provided under the outer box. Four columns are arranged on four corners in the inner box. Two columns are arranged in the inner box. The base portion has a top board. The top board is supported by the columns, and is set in the inner box. A buffer member is set on the upper face of the top board. The buffer member acts as an article mounting portion. And, an upper face of the buffer member acts as an article mounting face. The article mounting face is positioned higher than a table face of an up-and-down lift.