摘要:
An integrated circuit device package in accordance with the invention comprises a first land grid array (LGA) interposer socket positioned between, and in communication with, an LGA integrated circuit device and a first side of a first circuit board; a second LGA interposer socket positioned between, and in communication with, a second circuit board and a second side of the first circuit board, wherein the second side of the first circuit board is opposite to and parallel with the first side of the first circuit board; and a clamping mechanism for compressively urging together the LGA integrated circuit device, the first LGA interposer socket, the first circuit board, the second LGA interposer socket, and the second circuit board into electrical interconnection under a predetermined load.
摘要:
A circuit board assembly having a circuit board and a column grid array (“CGA”) integrated circuit package. The CGA package has a substrate having an array of solder columns extending from a bottom surface. A frame surrounds the CGA integrated circuit package and is affixed thereto. The frame extends from the substrate to a portion of the circuit board when the column grid array integrated circuit package is mounted on the circuit board to support the column grid array integrated circuit package. The frame is affixed to the CGA integrated circuit package by adhesive after the CGA integrated circuit package is mounted on the circuit board, the adhesive accommodating any variations in height of the CGA integrated circuit package.
摘要:
A circuit board assembly having a circuit board and a column grid array (“CGA”) integrated circuit package. The CGA package has a substrate having an array of solder columns extending from a bottom surface. A frame surrounds the CGA integrated circuit package and is affixed thereto. The frame extends from the substrate to a portion of the circuit board when the column grid array integrated circuit package is mounted on the circuit board to support the column grid array integrated circuit package. The frame is affixed to the CGA integrated circuit package by adhesive after the CGA integrated circuit package is mounted on the circuit board, the adhesive accommodating any variations in height of the CGA integrated circuit package.
摘要:
An extendable and retractable support stand for holding a parked vehicle such as a motorcycle, bicycle or similar vehicle which is otherwise unstable in an upright position. The support stand has the ability to be locked into place without the need for fixed locking positions by means of a tilted plate locking mechanism that can be operated by the operator using only one foot irrespective of the orientation of the support stand. The support members may include an outer telescoping member pivotally attach to the vehicle frame, an inner support member, a support pad, a running clutch mechanism that automatically locks the telescoping members, and a refraction spring to automatically return the stand to the minimum length when the clutch mechanism is disengaged.
摘要:
A column grid array integrated circuit package has a substrate. The substrate has a solder column array having a plurality of solder columns and a plurality of rigid columns interspersed with the solder columns at no-connect locations. The rigid columns contact a circuit board to which the column grid array integrated circuit package is mounted and support the column grid array integrated circuit package against compressive force.
摘要:
A tape automated bonded circuit comprising a flexible substrate having an opening defined by a peripheral sidewall. A plurality of conductive traces are provided on the flexible substrate which terminate in a plurality of leads which extend into alignment with the opening. An electronic device having a plurality of pad regions is aligned with the opening in the substrate. The leads are bonded to the pad regions. A continuous encapsulation layer which touches the peripheral side wall of the substrate opening on all sides encapsulatingly covers the bonded leads and pad regions and structurally reinforces each lead along the entire length which projects over the opening.
摘要:
An extendable and retractable support stand for holding a parked vehicle such as a motorcycle, bicycle or similar vehicle which is otherwise unstable in an upright position. The support stand has the ability to be locked into place without the need for fixed locking positions by means of a tilted plate locking mechanism that can be operated by the operator using only one foot irrespective of the orientation of the support stand. The support members may include an outer telescoping member pivotally attach to the vehicle frame, an inner support member, a support pad, a running clutch mechanism that automatically locks the telescoping members, and a refraction spring to automatically return the stand to the minimum length when the clutch mechanism is disengaged.
摘要:
A circuit board assembly has a circuit board and a column grid array (“CGA”) integrated circuit package. The CGA integrated circuit package has a substrate having an array of solder columns extending from a bottom surface. An oversized lid is affixed to the substrate. Support shims are disposed between a portion of the lid that extends beyond an outer periphery of the substrate and a circuit board to which the CGA integrated circuit package is mounted. The support shims are affixed to the lid with adhesive after the CGA integrated circuit package is mounted on the circuit board. The adhesive accommodates any variations in height in the CGA integrated circuit package.
摘要:
A thermal interface 26 between a heat source (e.g., an IC die) 24 and a heat sink 28 comprises a metallic mesh (26a) filled with a thermally conductive semi-liquid substance (26b). The thermally conductive semi-liquid substance may comprise, e.g., silicone grease or paraffin. The wire mesh may comprise silver, copper and/or gold cloth.
摘要:
A pin shroud for a circuit board having a raised pin platform and a pin array projecting from the raised pin platform. A spacer extending from a side wall of the shroud engages a side of the raised pin platform, thereby accurately aligning the pin shroud with the pin platform.