Abstract:
A resin-encapsulated semiconductor device comprises a semiconductor chip mounted on a die pad. A plurality of leads each having an inner lead and an outer lead are arranged in spaced relation from the die pad with the inner leads facing the die pad. A metal plating layer is formed on top surfaces of the inner leads, and the inner leads are connected by metal wires to the semiconductor chip. An encapsulation resin encapsulates the semiconductor chip, die pad, metal wires and inner leads leaving the outer leads exposed. The outer edge of the metal plating layer coincides with the outer surface of the encapsulation resin and with the outer edge of the metal plating layer.
Abstract:
A semiconductor resistor circuit has resistor elements of a polycrystalline silicon thin film formed on an insulating film deposited on a semiconductor substrate. A high stress insulating film is formed on and covers the resistor elements and the insulating film exposed between the resistor elements. Metal wirings cover upper portions of the resistor elements. The high stress insulating film has a membrane stress that is higher than that of the metal wirings.
Abstract:
A method of manufacturing a resin-encapsulated semiconductor device capable of supporting finer pitches comprises forming a metal plating layer on an inner lead and an outer lead of a lead. A semiconductor chip is mounted on a die pad, and an electrode on a surface of the semiconductor chip is electrically connected to the inner lead via a thin metal wire. The semiconductor chip, the thin metal wire and the inner lead are encapsulated by an encapsulation resin so that the outer lead extends beyond the encapsulation resin and is exposed. Resin burrs formed during resin encapsulation are removed by a defocused laser, and any metal adhered on the lead is lifted off.
Abstract:
In a Hall sensor in which a Hall element and elements serving as heat sources out of components of a circuit for driving the Hall element are arranged close to each other on a silicon substrate, two directions of control currents by spinning current for the Hall element are selected in a vector manner based on signals from temperature sensors arranged close to a periphery of the Hall element, thereby enabling the elimination of a magnetic offset caused by heat generation of the heat sources.
Abstract:
A semiconductor device manufacturing apparatus for encapsulating with a resin a semiconductor chip. A lead frame on which the semiconductor chip is mounted is provided between an upper mold and a lower mold. A tapered positioning pin is provided to the lower mold and includes a columnar portion having an outer diameter larger than an inner diameter of a positioning hole provided at an upper surface of the lead frame and configured to receive the columnar portion of the tapered positioning pin. Ejector pins are disposed in proximity to the tapered positioning pin at a distance determined by a thickness of the lead frame. The ejector pins are arranged so as to be symmetrical with respect to the tapered positioning pin.
Abstract:
Provided is a semiconductor device including a package having a hollow portion, which can meet the need of reduction in size and thickness. The semiconductor device includes: a resin molded member (1) including a hollow portion (10) having an inner bottom surface on which a semiconductor chip (6) is mounted, a surrounding portion (1b) that surrounds the hollow portion (10), and a bottom surface portion (1a); an inner lead (2e, 2f); and an outer lead (2a, 2b) exposed from the resin molded member (1). The inner lead buried in the molded member (1) includes an L-shaped lead extending portion having a through hole formed therethrough.
Abstract:
In a method of manufacturing semiconductor device, an insulating film is provided on a surface of a semiconductor substrate, a porous metal film containing numerous voids is formed on a region of the insulating film, and a protective film is provided on the porous metal film. The protective film is provided with an opening portion on the porous metal film, with the opening portion defining a pad region. A wire is wire-bonded to the porous metal film in the pad region.