摘要:
In a semiconductor device (SP1) according to an embodiment, a solder resist film (first insulating layer, SR1) which is in contact with the base material layer, and a resin body (second insulating layer, 4) which is in contact with the solder resist film and the semiconductor chip, are laminated in between the base material layer (2CR) of a wiring substrate 2 and a semiconductor chip (3). In addition, a linear expansion coefficient of the solder resist film is equal to or larger than a linear expansion coefficient of the base material layer, and the linear expansion coefficient of the solder resist film is equal to or smaller than a linear expansion coefficient of the resin body. Also, the linear expansion coefficient of the base material layer is smaller than the linear expansion coefficient of the resin body. According to the above-described configuration, damage of the semiconductor device caused by a temperature cyclic load can be suppressed, and thereby reliability can be improved.
摘要:
A resin composition for semiconductor encapsulation having goodmoldability, of which the cured product has effective electromagnetic wave shieldability, is provided. A resin composition for semiconductor encapsulation, containing spherical sintered ferrite particles having the following properties (a) to (c) : (a) the soluble ion content of the particles is at most 5 ppm; (b) the mean particle size of the particles is from 10 to 50 µm; (c) the crystal structure of the particles by X-ray diffractiometry is a spinel structure.
摘要:
A ceramic package (10,10A,10B) comprising: a substrate body (20) comprising ceramics; a cavity (22) opened in a surface of said substrate body (20) for mounting a light emitting element (12) on its bottom face; and a light reflecting layer (210) provided on a side face of said cavity (22), wherein said light reflecting layer includes a silver layer (34) containing silver and having a thickness of more than 3 µm and no more than 10 µm.
摘要:
A semiconductor packaged device, and method of packaging that incorporates the formation of cavities about electronic devices during the packaging process. In one example, the device package includes a first substrate having a first recess formed therein, a second substrate having a second recess formed therein, and an electronic device mounted in the first recess. The first and second substrates are joined together with the first and second recesses substantially overlying one another so as to form a cavity around the electronic device.
摘要:
A radio-frequency package includes a radio-frequency device 2; a multilayer dielectric substrate 20 that the radio-frequency device 2 is mounted on a surface layer thereof; and a seal ring 3 and a cover 4 as an electromagnetic shield member that covers a portion of the surface layer of the multilayer dielectric substrate and the radio-frequency device 2. In the radio-frequency package, a leading-end open line 50 having a length equivalent to substantially a quarter of a wavelength of spurious is provided to an internal conductor pad 5. Spurious emission propagating through a cavity space is coupled to a wire, and radiated to the outside via a bias line on an inner layer of the multilayer dielectric substrate. Therefore, it is possible to reduce a level of the spurious coupled to the wire, and thus it is possible to reduce a level of spurious emission to the outside.
摘要:
A multiplayer printed wiring board (100) consisting of one-sided circuit boards (A, B) to house an IC chip (70), and being capable of connecting an IC module (120) to a printed wiring board via a BGA (56) on the rear surface, with the BGAs (56) disposed on the front and rear surfaces and the IC module (120) mounted via a BGA (56) on the front surface. Accordingly, a freedom of configuring an IC module to be mounted is enhanced to allow mounting of various IC modules.
摘要:
Bezeichnung der Erfindung: Optisches oder elektronisches Modul und Verfahren zu dessen Herstellung. Die Erfindung begrifft ein optisches oder elektronisches Modul mit mindestens einer optischen oder elektronischen Komponente (1), die einen Wirkbereich (11) aufweist, über den sie in Wirkverbindung mit der Umgebung steht, und einem Kunststoffgehäuse (4), in dem die Komponente (1) angeordnet ist. Das Kunststoffgehäuse (1) weist einen ersten Bereich (41, 61) auf, der aus einer transparenten Kunststoffmasse besteht, und einen zweiten Bereich (42), der aus einer nichttransparenten Kunststoffmasse besteht. Der erste Bereich (41, 61) erstreckt sich dabei angrenzend an den Wirkbereich (11) der Komponente (1). Des weiteren betrifft die Erfindung Verfahren zur Herstellung eines solches Moduls.
摘要:
In a multi-layer printed wiring board 100 comprising single side circuit boards A, B and for accommodating an IC chip 70, BGAs 56 are disposed on its front and rear faces, so that with an IC module 120 mounted through the BGA 56 on the front face, this board can be connected to a printed wiring board through the BGA 56 on the rear face. Thus, freedom in the configuration of the IC module mounted increases so that various kinds of the IC modules can be loaded.
摘要:
A resin component for encapsulating a semiconductor includes magnetic powder and silica powder whose average particle diameter is smaller than the average particle diameter of the magnetic powder. Thus, the curing body of the resin component for encapsulating a semiconductor has an electromagnetic wave shielding function by the magnetic powder. Since the spaces of the magnetic powder are filled with the silica powder whose average particle diameter is small, the moldability of the curing body is improved and the insulating characteristics thereof are enhanced. Such a resin component for encapsulating a semiconductor is employed, there can be produced a preferably formed and encapsulated semiconductor device having the electromagnetic wave shielding function and having no malfunction generated due to leakage current from a semiconductor element.