Nec Corporation

Nec Electronics Corporation

Other

Renesas Electronics Corporation

Ngk Spark Plug Company, Limited

Tadanori Shimoto

Koji Matsui

Katsumi Kikuchi

Kazuhiro Baba

Hirokazu Honda

Keiichiro Kata

Hideya Murai

Takuo Funaya

Shintaro Yamamichi

Shinichi Miyazaki

Satoshi Hirano

Naoji Senba

Rokuro Kambe

Shinya Miyamoto

Kouji Matsui

Yuzo Shimada

Kazuaki Utsumi

Kenta Ogawa

Akinobu Shibuya

Takehiko Maeda

Takero Teramoto

Jun Tsukano

Yoshitsugu Funada

Hironobu Kawasato

A wiring substrate for mounting semiconductors is provided with an insulation film, wires formed in the insulation film, and a plurality of electrode pads that electrically connect to the wires through vias. The electrode pads are provided to have their surfaces exposed to both of the front surface and the rear surface of the insulation film, and at least a part of the side surface of the electrode pads is buried in the insulation film. The insulation film is formed by forming electrode pads on the respective two metallic plates, thereafter, laminating an insulation layer and wires on the respective metallic plates to cover the electrode pad, and adhering the insulation layers to each other for integration, and thereafter, removing the metallic plates.

Wiring substrate for mounting semiconductors, method of manufacturing the same, and semiconductor package

An interconnecting substrate is provided with a base insulating film having a sunken section in a bottom surface thereof, a first interconnection provided in the sunken section, a via hole formed in the base insulating film, and a second interconnection which is connected to the first interconnection via a conductor within the via hole and is formed on a top surface of the base insulating film, wherein the interconnecting substrate includes a first interconnection pattern formed of the first interconnection which includes at least a linear pattern which extends along a second direction orthogonal to a first direction, and a warpage-controlling pattern which is provided in the sunken section in the bottom surface of the base insulating film and is formed in such a manner as to suppress a warpage of the interconnecting substrate toward a bottom side on both sides of the first direction.

Interconnecting substrate and semiconductor device

A semiconductor package board for mounting thereon a semiconductor chip includes a metal base having an opening for receiving therein the semiconductor chip and a multilayer wiring film layered onto the metal base. The semiconductor chip is flip-chip bonded onto the metal pads disposed on the multilayer wiring film within the opening. The surface of the metal base is flush with the top surface of the semiconductor chip received in the opening. The resultant semiconductor device has a larger number of external pins and a smaller deformation without using a stiffener.

Semiconductor package board using a metal base

A wiring board has a base insulating film. The base insulating film has a thickness of 20 to 100 &#x3bc;m and is made of a heat-resistant resin which has a glass-transition temperature of 150&#xb0; C. or higher and which contains reinforcing fibers made of glass or aramid. The base insulating film has the following physical properties (1) to (6) when an elastic modulus at a temperature of T&#xb0; C. is given as D(GPa) and a breaking strength at a temperature of T&#xb0; C. is given as H(MPa).

Wiring board and semiconductor package using the same

A semiconductor device mounting board, a method of manufacturing the same, a method of inspecting the same, and a semiconductor package are provided. The semiconductor device mounting board is capable of implementing a high-density and fine structure corresponding to a narrowing pitch and has high mounting reliability. A semiconductor device mounting board includes a wiring construction film including an insulating layer and a wiring layer, and a first electrode pattern disposed on one surface of the wiring construction film in which a periphery of a side surface of the electrode pattern is in contact with the insulating layer. At least a rear surface of the first electrode pattern is not in contact with the insulating layer.

Semiconductor device mounting board, method of manufacturing the same, method of inspecting the same, and semiconductor package

An interconnecting substrate for carrying a semiconductor device, comprising: an insulating layer; an interconnection set on an obverse surface of the insulating layer; an electrode which is set on a reverse surface side of the insulating layer and formed in such a way that, at least, a lateral face of an obverse end of the electrode is all round brought into contact with the insulating layer, while, at least, a reverse surface of the electrode is not in contact with said insulating layer; a via conductor which is disposed on an obverse surface of the electrode and formed in the insulating layer so as to connect this electrode with the interconnection; and a supporting structure on the surface of the insulating layer.

Interconnecting substrate for carrying semiconductor device, method of producing thereof and package of semiconductor device

In a sheet material (), a bonding layer () is provided, and then a high-strength layer () is laminated on the bonding layer (). The bonding layer () is made of an epoxy resin being a thermosetting material. The high-strength layer () is made of polyimide, which is not softened at a thermosetting temperature of the epoxy resin and has a tensile rupture strength higher than that of the cured thermosetting material. Moreover, the polyimide has a tensile rupture strength of 100 MPa or higher at 23&#xb0; C. and a tensile rupture elongation of 10% or higher at 23&#xb0; C. Assuming that a tensile rupture strength at &#x2212;65&#xb0; C. is a and a tensile rupture strength at 150&#xb0; C. is b, a ratio (a/b) is 2.5 or less.

Sheet material and wiring board

A method of producing a multilayer wiring substrate is disclosed. The multilayer wiring substrate is free from a core substrate and includes a build up layer which includes an insulator layer and a wiring layer. One of a first main surface and a second main surface of the build up layer is formed with a metal supporting frame body. The method includes the steps of: forming a first insulator layer on a first main surface of a metal supporting plate, where the first insulator layer is included in the insulator layer and becomes a first resist layer which is positioned on the first main surface's side of the build up layer, and forming a first metal pad layer in a given position on a first main surface of the first insulator layer, where the first metal pad layer is included in the wiring layer and becomes a metal pad layer.

Multilayer wiring substrate, and method of producing same

An electronic device assembly for dense mounting of electronic devices and method of connecting the electronic devices are disclosed. Conductive portions implemented by metal bumps and sealing portions implemented by adhesive seal resin are connected by thermocompression at the same time between two electronic devices. This may be repeated between three or more electronic device.

Electronic device assembly and a method of connecting electronic devices constituting the same

Growing community of inventors

Tokyo, Japan

Tadanori Shimoto