Abstract: To provide a technology capable of preventing the deterioration of the reliability of semiconductor devices caused by the gasification of a part of components of the material constituting a wiring substrate. A wiring layer constituting a circuit pattern is formed over each of the front and rear surfaces of a glass epoxy substrate, and after the formation of a solder resist covering the wiring layer while exposing a part of the wiring layer and prior to a heat treatment (first heat treatment) at 100° C. to 150° C. for dehumidification, a heat treatment (second heat treatment) at 160° C. to 230° C. for gasifying and discharging an organic solvent contained in the material constituting a wiring substrate is performed for the wiring substrate.

Abstract: Technology capable of preventing the deterioration of the reliability of semiconductor devices caused by the gasification of a part of the material constituting a wiring substrate is provided. A wiring layer constituting a circuit pattern is formed over each of the front and rear surfaces of a glass epoxy substrate, and after the formation of a solder resist covering the wiring layer while exposing a part of the wiring layer and prior to a heat treatment (first heat treatment) at 100° C. to 150° C. for dehumidification, a heat treatment (second heat treatment) at 160° C. to 230° C. for gasifying and discharging an organic solvent contained in the material constituting a wiring substrate is performed for the wiring substrate.

Abstract: To achieve a reduction in cost of a semiconductor device, in a common board (a wiring board), a plurality of bonding leads each extend toward the center of the board, and a solder resist film as a die bonding region supporting a minimum chip is coated with a die bonding material. With this, even when a first semiconductor chip as a large chip is mounted, wire bonding can be performed without causing the die bonding material to cover the bonding leads. Thus, development cost can be reduced to reduce the cost of the semiconductor device (LGA).

Abstract: To provide a technology capable of preventing the deterioration of the reliability of semiconductor devices caused by the gasification of a part of components of the material constituting a wiring substrate. A wiring layer constituting a circuit pattern is formed over each of the front and rear surfaces of a glass epoxy substrate, and after the formation of a solder resist covering the wiring layer while exposing a part of the wiring layer and prior to a heat treatment (first heat treatment) at 100° C. to 150° C. for dehumidification, a heat treatment (second heat treatment) at 160° C. to 230° C. for gasifying and discharging an organic solvent contained in the material constituting a wiring substrate is performed for the wiring substrate.

Abstract: To improve reliability of a semiconductor device in which wire bonding using a wire made of copper is performed. A semiconductor device is configured so that one of end parts (wide width part) of a copper wire is joined via a bump on a pad (electrode pad) formed over a main surface (first main surface) of a semiconductor chip of the semiconductor device. The bump is made of gold, which is a metal material having a hardness lower than that of copper, and the width of the bump is narrower than the width of the wide width part of the wire.

Abstract: A multi-pin semiconductor device with improved reliability. In a multi-pin BGA, a plurality of wires for electrically coupling a semiconductor chip and a wiring substrate include a plurality of short and thin first wires located in an inner position and a plurality of second wires longer and thicker than the first wires. Since resin flows in from between thin first wires during resin molding, the resin pushes out air, thereby suppressing formation of voids. The reliability of the multi-pin BGA is thus improved.

Abstract: A semiconductor device in which memory chips are stacked on the surface of a wiring substrate has a microcomputer chip and an interposer chip arranged on the surface of the memory chip. The pads of the microcomputer chip and the pads of the interposer chip are arranged almost circularly and are connected by bonding wires.

Abstract: The semiconductor device with which bonding wires cannot contact easily is offered. In this semiconductor device, memory chips are stacked on the surface of a wiring substrate, a microcomputer chip and an interposer chip are arranged on the surface of the memory chip, and the pad of a microcomputer chip and the pad of an interposer chip arranged almost circularly are connected by a bonding wire. Therefore, since the transfer pressure of liquid resin for sealing can be weakened with a wire, contact of the wires by deformation of a wire can be prevented.