摘要:
A semiconductor device and a method of producing the same, the device including a semiconductor chip; balls which function as external connecting terminals; a substrate which electrically connects the semiconductor chip and the balls; a mold resin which seals at least a part of the semiconductor chip; and a connecting portion sealing resin which seals the connecting portion between the substrate and the semiconductor chip. The semiconductor device is mounted onto a printed circuit board via the balls. The thermal expansion coefficient of the mold resin is matched with the thermal expansion coefficient of the printed circuit board. A side surface holding portion for the holding the side surfaces of the semiconductor chip is formed in the mold resin to restrict thermal deformation of the semiconductor chip.
摘要:
A semiconductor device including a semiconductor chip sealed with an encapsulating resin. Columnar electrodes are connected to electrode pads of the semiconductor chip, and extend through the encapsulating resin. The columnar electrodes are made from bonding wires and include enlarged outer ends. Solder balls are arranged on the surface of the encapsulating resin and connected to the outer ends of the columnar electrodes. In another example, pin wires are formed by half-cutting bonding wires, bonding one end of each of the bonding wires, and cutting the bonding wires at the half-cut portions.
摘要:
A plurality of semiconductor chips are incorporated in a one-piece package so as to substantially increase a mounting area of a semiconductor device so that the semiconductor device can be provided with the projection electrodes having a structure which enable the semiconductor device to be mounted by a conventional surface mounting technique. A redistribution layer interconnects and integrally holds the plurality of semiconductor elements. A plurality of projection electrodes are provided on the redistribution layer for surface mounting. The plurality of semiconductor chips are rendered to be different kinds so that the plurality of different kinds of semiconductor chips together provide a complete function. The plurality of semiconductor chips may be rendered to be the same kind so as to reduce a mounting area of the semiconductor chips as a whole.
摘要:
A plurality of semiconductor chips are incorporated in a one-piece package so as to substantially increase a mounting area of a semiconductor device so that the semiconductor device can be provided with the projection electrodes having a structure which enable the semiconductor device to be mounted by a conventional surface mounting technique. A redistribution layer interconnects and integrally holds the plurality of semiconductor elements. A plurality of projection electrodes are provided on the redistribution layer for surface mounting. The plurality of semiconductor chips are rendered to be different kinds so that the plurality of different kinds of semiconductor chips together provide a complete function. The plurality of semiconductor chips may be rendered to be the same kind so as to reduce a mounting area of the semiconductor chips as a whole.
摘要:
A method of design of a circuit board enabling high density conductor lines to be drawn efficiently. A rats nest is formed by connecting pads to which terminals of an electronic device are connected and external connection terminals by lines. A region with the highest density of lines of the rats nest is then selected and design rules relating to routes and dimensions of conductor lines are set in the region with the highest density of lines of the rats nest. Conductor lines are then laid at the region with the highest density of lines of the rats nest, and whether or not the conductor lines can be laid at the region with the highest density of lines of the rats nest is confirmed. Setting of the design rules and laying of conductor lines are if the conductor lines cannot be laid, and the conductor lines of the remaining regions are laid by the set design rules if the conductor lines can be laid.
摘要:
In a semiconductor device circuit formation surfaces of each of a plurality of semiconductor chips can be easily located at even level when the semiconductor chips are arranged side by side so that a process of forming rearrangement wiring is simplified. The semiconductor chips are mounted on a substrate via an adhesive layer in a two-dimensional arrangement. A resin layer is formed on the substrate and located around the semiconductor elements. The resin layer has the same thickness as a thickness of the semiconductor elements. An organic insulating layer is formed over a surface of the resin layer and circuit formation surfaces of the semiconductor elements. A rearrangement wiring layer is formed on the organic insulating layer and electrodes of the semiconductor chips. External connection terminals are electrically connected to the circuit formation surfaces of the semiconductor elements through wiring in the rearrangement wiring layer.
摘要:
A method of design of a circuit board enabling high density conductor lines to be drawn efficiently. A rats nest is formed by connecting pads to which terminals of an electronic device are connected and external connection terminals by lines. A region with the highest density of lines of the rats nest is then selected and design rules relating to routes and dimensions of conductor lines are set in the region with the highest density of lines of the rats nest. Conductor lines are then laid at the region with the highest density of lines of the rats nest, and whether or not the conductor lines can be laid at the region with the highest density of lines of the rats nest is confirmed. Setting of the design rules and laying of conductor lines are if the conductor lines cannot be laid, and the conductor lines of the remaining regions are laid by the set design rules if the conductor lines can be laid.
摘要:
A structure in which a phosphorus-nickel layer, a rich phosphorus nickel layer that contains phosphorus or boron higher than this phosphorus-nickel layer, a nickel-tin ally layer, a tin-rich tin alloy layer, and a tin alloy solder layer are formed in sequence on an electrode. Accordingly, adhesiveness between a metal pattern used as the electrode, the wiring, or the pad and the solder can be improved.
摘要:
A structure in which a phosphorus-nickel layer, a rich phosphorus nickel layer that contains phosphorus or boron higher than this phosphorus-nickel layer, a nickel-tin ally layer, a tin-rich tin alloy layer, and a tin alloy solder layer are formed in sequence on an electrode. Accordingly, adhesiveness between a metal pattern used as the electrode, the wiring, or the pad and the solder can be improved.
摘要:
A semiconductor device includes a first semiconductor chip (5) having a first terminal (7) on one surface, a second semiconductor chip (1a) which is larger than the first semiconductor chip (5) and on which the first semiconductor chip (5) is stacked and which has a second terminal (3) on one surface, an insulating layer (10) formed on a second semiconductor chip (1a) to cover the first semiconductor chip (5), a plurality of holes (10a) formed in the insulating layer (10) on at least a peripheral area of the first semiconductor chip (5), a via (11a) formed like a film on inner peripheral surfaces and bottom surfaces of the holes (10a) and connected electrically to the second terminal (3) of the second semiconductor chip (1a), a wiring pattern (11b) formed on an upper surface of the insulating layer (10), and an external terminal (14) formed on the wiring pattern (11b).