Stmicroelectronics S.r.l.

Stmicroelectronics Gmbh

International Business Machines Corporation

Fulvio Vittorio Fontana

Giovanni Graziosi

Cristina Somma

Federico Giovanni Ziglioli

Michele Derai

Alberto Pagani

Ubaldo Mastromatteo

Jefferson Sismundo Talledo

Giulio Ricotti

Mark Andrew Shaw

Alex Gritti

Donald Seton Farquhar

Marco Morelli

Luca Maggi

Mario Giovanni Scurati

Davide Maria Benelli

Mario Leonardo Cesana

Marco Rovitto

Giuseppe Butturini

One or more embodiments are directed to quad flat no-lead (QFN) semiconductor packages, devices, and methods in which one or more electrical components are positioned between a die pad of a QFN leadframe and a semiconductor die. In one embodiment, a device includes a die pad, a lead that is spaced apart from the die pad, and at least one electrical component that has a first contact on the die pad and a second contact on the lead. A semiconductor die is positioned on the at least one electrical component and is spaced apart from the die pad by the at least one electrical component. The device further includes at least one conductive wire, or wire bond, that electrically couples the at least one lead to the semiconductor die.

SMDs integration on QFN by 3D stacked solution

At least one semiconductor chip or die is held within at a chip retaining formation provided in a chip holding device. The chip holding device is then positioned with the at least one semiconductor chip or die arranged facing a chip attachment location in a chip mounting substrate. This positioning produces a cavity between the at least one semiconductor chip or die arranged at the chip retaining formation and the chip attachment location in the chip mounting substrate. A chip attachment material is dispensed into the cavity. Once cured, the chip attachment material attaches the at least one semiconductor chip or die onto the substrate at the chip attachment location in the chip mounting substrate.

Method of manufacturing semiconductor devices and corresponding device

A semiconductor device, such as a Quad-Flat No-lead (QFN) package, includes a semiconductor chip arranged on a die pad of a leadframe. The leadframe has an array of electrically-conductive leads around the die pad. The leads in the array have distal ends facing away from the die pad as well as recessed portions at an upper surface of the leads. Resilient material, such as low elasticity modulus material, is present at the upper surface of the leads and filling the recessed portions. An insulating encapsulation is molded onto the semiconductor chip. The resilient material is sandwiched between the insulating encapsulation and the distal ends of the leads. This resilient material facilitates flexibility of the leads, making them suited for reliable soldering to an insulated metal substrate.

Method of manufacturing semiconductor devices and corresponding semiconductor device

A semiconductor chip is mounted at a first surface of a leadframe and an insulating encapsulation is formed onto the leadframe. An etching mask is applied to a second surface of the leadframe to cover locations of two adjacent rows of electrical contacts as well as a connecting bar between the two adjacent rows which electrically couples the electrical contacts. The second surface is then etched through the etching mask to remove leadframe material at the second surface and define the electrical contacts and connecting bar. The electrical contacts include a distal surface as well as flanks left uncovered by the insulating encapsulation. The etching mask is then removed and the electrical contacts and the connecting bars are used as electrodes in an electroplating of the distal surface and the flanks of the electrical contacts. The connecting bar is then removed from between the two adjacent rows during device singulation.

A lead frame for an integrated electronic device includes a die pad made of a first metallic material. A top coating layer formed by a second metallic material is arranged on a top surface of the die pad. The second metallic material has an oxidation rate lower than the first metallic material. The top coating layer leaves exposed a number of corner portions of the top surface of the die pad. A subsequent heating operation, for example occurring in connection with wirebonding, causes an oxidized layer to form on the corner portions of the top surface of the die pad at a position in contact with the top coating layer.

Lead frame for a package for a semiconductor device, semiconductor device and process for manufacturing a semiconductor device

A semiconductor product includes a layer of semiconductor die package molding material embedding a semiconductor die having a front surface and an array of electrically-conductive bodies such as spheres or balls around the semiconductor die. The electrically-conductive bodies have front end portions around the front surface of the semiconductor die and back end portions protruding from the layer of semiconductor die package molding material. Electrically-conductive formations are provided between the front surface of the semiconductor die and front end portions of the electrically-conductive bodies left uncovered by the package molding material. Light-permeable sealing material can be provided at electrically-conductive formations to facilitate inspecting the electrically-conductive formations via visual inspection through the light-permeable sealing material.

Method of manufacturing semiconductor products, semiconductor product, device and testing method

Methods of forming a semiconductor device comprising a lead-frame having a die pad having at least one electrically conductive die pad area and an insulating layer applied onto the electrically conductive die pad area. An electrically conductive layer is applied onto the insulating layer with one or more semiconductor dice coupled, for instance adhesively, to the electrically conductive layer. The electrically conductive die pad area, the electrically conductive layer and the insulating layer sandwiched therebetween form at least one capacitor integrated in the device. The electrically conductive die pad area comprises a sculptured structure with valleys and peaks therein; the electrically conductive layer comprises electrically conductive filling material extending into the valleys in the sculptured structure of the electrically conductive die pad area.

Semiconductor device and corresponding method

A semiconductor device comprises: a lead-frame comprising a die pad having at least one electrically conductive die pad area an insulating layer applied onto the electrically conductive die pad area. An electrically conductive layer is applied onto the insulating layer with one or more semiconductor dice coupled, for instance adhesively, to the electrically conductive layer. The electrically conductive die pad area, the electrically conductive layer and the insulating layer sandwiched therebetween form at least one capacitor integrated in the device. The electrically conductive die pad area comprises a sculptured structure with valleys and peaks therein; the electrically conductive layer comprises electrically conductive filling material extending into the valleys in the sculptured structure of the electrically conductive die pad area.

SMDS integration on QFN by 3D stacked solution

A device for dispensing a fluid includes a fixed part to be worn by a user, a fluid connection including a terminal outlet, a needle coupled to the terminal outlet of the fluid connection for dispensing a fluid, and a replaceable part coupled to the fixed part via the fluid connection. The replaceable part includes a reservoir for containing the fluid to be dispensed, and a micro-pump coupled to the reservoir to send the fluid to the fixed part through the fluid connection. An actuator operates the micro-pump. The fixed part includes a pressure-sensor in proximity to the terminal outlet of the fluid connection and is associated with dispensing the fluid from the needle. An electronic control module controls operation of the micro-pump via the pressure-sensor.

Device of a wearable type for dispensing a fluid, and corresponding dispensing method

A method for forming an electronic device includes embedding an integrated circuit die in a package including substrate of thermally conductive material with front and back surfaces and a through-hole. The die is sunk in the through-hole. A first insulating material layer covers the die front surface and the package front surface with first windows for accessing die terminals. Package terminals and package track are arranged on the first insulating layer. A second insulating material layer covers the first insulating layer and the package tracks with second windows for accessing the package terminals.

Electronic device with die being sunk in substrate

In an embodiment, a semiconductor device includes: a lead-frame including one or more electrically conductive areas, one or more dielectric layers over the electrically conductive area or areas, one or more electrically conductive layer over the one or more dielectric layers thus forming one or more capacitors each including the dielectric layer sandwiched between an electrically conductive area and the electrically conductive layer. The semiconductor device also includes a semiconductor die on the lead-frame electrically connected to the one or more electrically conductive layers.

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Monza, Italy

Fulvio Vittorio Fontana