摘要:
A method for producing semiconductor devices by mounting semiconductor chips 12 on a substrate 20 and resin-encapsulated the same is provided, wherein a plurality of semiconductor devices having a high reliability are simultaneously and efficiently obtained from a single large-sized substrate, comprising the steps of mounting a plurality of semiconductor chips 12 on the large-sized substrate 20 in correspondence to a plurality of unit substrates 20a formed thereon; resin-encapsulating the semiconductor chips 12 by filling a encapsulating resin 16 in the inside of the outer peripheral edge of the large-sized substrate 20; and cutting the large-sized substrate 20 thus resin-encapsulated together with the encapsulating resin 16 into individual unit substrates to obtain a plurality of resin-encapsulated semiconductor devices.
摘要:
A wiring substrate includes a wiring pattern in an uppermost layer that includes pads. A solder resist layer covers the wiring pattern. A recess exposes part of the wiring pattern from the solder resist layer to form pads. The solder resist layer includes a portion formed in a region corresponding to the recess, a portion formed outward from the recess, and a portion formed inward from the recess. The upper surface of the solder resist layer at the portion corresponding to the recess is higher than the upper surface of the pads but lower than the upper surfaces of the other portions of the solder resist layer.
摘要:
A wiring board includes: an uppermost wiring layer formed on a prescribed number of underlying wiring layers, a portion of the uppermost wiring layer being exposed and used as a pad for connection with a component to be mounted; and an insulation resin layer covering the uppermost wiring layer, wherein the thickness of the portion of the uppermost wiring layer is larger than that of other portions thereof.
摘要:
A unit interconnection substrate for mounting leadless type electronic parts on a mount substrate by superposing them on each other in two or more stages, comprising an insulating surface on the top surface of which an interconnection circuit with conductor pads and connection terminals is formed, depressions for holding electronic parts formed in a bottom surface of the insulating substrate, connection terminals provided on the bottom surface of the insulating substrate on the periphery of the depression, and connection terminals electrically connected to the connection terminals of the top surface of the insulating substrate via conductor via holes provided in the insulating substrate. Electronic parts are electrically connected to the conductor pads on the top surface of the insulating substrate, thereby to make it possible to mount the electronic parts on the insulating substrate. Together with this, holding of the electronic parts mounted on the mount substrate in the depressions of the bottom surface of the insulating substrate is made possible.
摘要:
A substrate for inspecting an electronic device used for an electrical test of the electronic device having bump-shaped connection terminals, comprises: opening sections, the diameter of each opening being determined so that a connection terminal can be inserted into and drawn out from the opening, are formed penetrating the insulating substrate in a region on one side of an insulating substrate on which the electronic device is mounted, corresponding to an arrangement of the connection terminals; and wiring patterns, each of which is composed of a pad section being exposed onto a bottom face of the opening so that the pad can come into contact with the connection terminal so as to accomplish electrical continuity, a connecting pad section formed in a region outside of the region in which the pad section is formed, which comes into contact with a contact terminal of an inspection device so as to accomplish electrical continuity, and a wiring section for electrically connecting the pad section with the connecting pad section, are formed on the other side of the insulating substrate.
摘要:
A method of manufacturing a wiring board for use in mounting of an electronic component includes: forming an outermost wiring layer on a surface side where the electronic component is mounted; forming an insulating layer so as to cover the wiring layer; and forming a concave portion in the insulating layer. The concave portion is formed by removing, using a mask formed in a required shape by patterning, an exposed portion of the insulating layer in a step-like shape until a surface of a pad defined at a portion of the wiring layer is exposed. The concave portion is preferably formed by removing the portion of the insulating layer by sand blast.
摘要:
A wiring substrate includes a wiring pattern, which includes an upper surface forming a desired recognition mark, and a solder resist layer, which covers the wiring pattern. The solder resist layer includes a recess that entirely exposes the upper surface of the wiring pattern. The solder resist layer includes a solder resist layer formed at a region corresponding to the recess and a solder resist layer formed outside the recess. The recess entirely exposes the upper surface of the wiring pattern as the recognition mark, and the solder resist layer is formed at portions outside the upper surface of the wiring pattern.
摘要:
A wiring board includes: an uppermost wiring layer formed on a prescribed number of underlying wiring layers, a portion of the uppermost wiring layer being exposed and used as a pad for connection with a component to be mounted; and an insulation resin layer covering the uppermost wiring layer, wherein the thickness of the portion of the uppermost wiring layer is larger than that of other portions thereof.
摘要:
A wiring board includes: an uppermost wiring layer formed on a prescribed number of underlying wiring layers, a portion of the uppermost wiring layer being exposed and used as a pad for connection with a component to be mounted; and an insulation resin layer covering the uppermost wiring layer, wherein the thickness of the portion of the uppermost wiring layer is larger than that of other portions thereof.
摘要:
In the case in which an electrical connection between upper and lower layers is to be carried out through a via opening portion 16 provided on an insulating layer 14 of a wiring substrate constituting a multilayer wiring substrate, the electrical connection between the upper and lower layers is performed through a conductive material 30 while exposing a part of wall surfaces of the via opening portion 16 of the insulating layer without covering all of the wall surfaces of the via opening portion 16 with the conductive material 30.