Abstract:
PROBLEM TO BE SOLVED: To provide a method of thinning a semiconductor substrate and a structures for effecting the same. SOLUTION: A C4 (controlled collapse chip connection) grind tape and a laser-ablative adhesive layer are formed on the front surface of a semiconductor substrate. Then, a carrier substrate is mounted to the laser-ablative adhesive layer. The back side of the semiconductor substrate is thinned by polishing or grinding, and the carrier substrate provides mechanical support in order to thin the semiconductor substrate to the thickness of about 25 μm during a thinning procedure. A film-frame tape is mounted on the back side of the thinned semiconductor substrate, the laser-ablative adhesive layer is polished by laser beam, and thereby the carrier substrate is separated from the back side of the C4 grind tape. An assembly comprising the film-frame tape, the thinned semiconductor substrate, and the C4 grind tape is diced. An ultraviolet beam is irradiated to the C4 grind tape, causing degradation in its adhesiveness. Thereafter, the C4 grind tape is removed. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a metal wiring structure for a uniform current density in a C4 ball. SOLUTION: A sub-pad assembly of a metal structure is arranged directly underneath a metal pad. The sub-pad assembly includes an upper level metal line structure that comes into contact with the metal pad and a set of metal vias that provide electrical connection between the upper level metal line structure and a lower level metal line structure arranged underneath of the upper level metal line structure. The reliability of a C4 ball is improved by using a metal pad structure having a set of integrated metal vias that are divided and distributed to promote an uniform current density distribution in the C4 ball. The areal density of the cross-sectional area of the plurality of metal vias is higher at the center part of the metal pad than at the peripheral edge part of the flat part of the metal pad. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
An interconnection array layout and method are provided for a plurality of paired line conductors of a given length extending principally parallel. A single crossing region traverses the paired line conductors intermediate the given length, wherein the line conductors of each pair of line conductors cross such that inter-pair capacitive coupling is matched. Intra-pair capacitive coupling is avoided by separating the line conductors of each pair of line conductors by two pitches and disposing therebetween a line conductor of a different pair of line conductors. Applications include semiconductor memory arrays, such as DRAM structures, and address/data busses wherein paired true/complement line conductors are employed.
Abstract:
A semiconductor-processing defect monitor construction for diagnosing processing-induced defects. The semiconductor-processing defect monitor utilizes an array layout and includes continuity defect monitoring structures and short-circuit defect monitoring structures. Once a defect has been indicated by a testing operation, the array layout associated with the defect monitor can be used quickly to determine the approximate location of the known defect, thereby facilitating prompt visual observation of the known defect and, thus, prompt determination of the appropriate corrective action to be applied before substantial continued manufacturing has occurred.
Abstract:
An interconnection array layout and method are provided for a plurality of paired line conductors of a given length extending principally parallel. A single crossing region traverses the paired line conductors intermediate the given length, wherein the line conductors of each pair of line conductors cross such that inter-pair capacitive coupling is matched. Intra-pair capacitive coupling is avoided by separating the line conductors of each pair of line conductors by two pitches and disposing therebetween a line conductor of a different pair of line conductors. Applications include semiconductor memory arrays, such as DRAM structures, and address/data busses wherein paired true/complement line conductors are employed.
Abstract:
A semiconductor-processing defect monitor construction for diagnosing processing-induced defects. The semiconductor-processing defect monitor utilizes an array layout and includes continuity defect monitoring structures and short-circuit defect monitoring structures. Once a defect has been indicated by a testing operation, the array layout associated with the defect monitor can be used quickly to determine the approximate location of the known defect, thereby facilitating prompt visual observation of the known defect and, thus, prompt determination of the appropriate corrective action to be applied before substantial continued manufacturing has occurred.