Abstract:
A printed circuit board involves hybridizing the first kind of microwave plate (1), the second kind of semi-solidification plate (2) and the third kind of ordinary plate (3), all of which have windows, wherein at least two windows have different size and the area between the edges of the two windows presents a via hole (70,71) passing through the area and the back borehole (710) can be use selectively. The corresponding method for manufacturing a printed circuit board is applied to a radio-frequency apparatus.
Abstract:
An insulated metal substrate laminate includes a metal substrate (104), a dielectric layer (106) disposed upon the metal substrate, wherein the dielectric layer has an aperture (110) formed therein and a thickness of less than or equal to 1 mil, and an electrically conductive layer (108) disposed upon the dielectric layer, wherein the electrically conductive layer has an aperture formed therein, wherein the aperture is coaxially aligned over the aperture of the dielectric layer.
Abstract:
A semiconductor system having a substrate (101) including a rigid insulating interposer (110) with a high modulus and a top (140) and a bottom (150) low-modulus tape with flip-attached semiconductor chips (120, 130). The assembled chips, with the passive surfaces facing each other, are located in an opening (114) of the interposer, which has a thickness (111) equal to or smaller than the sum of the assembled two chips. Adhesive material (160) holds the tapes parallel to the interposer and the chip surfaces together. Solder balls (180) and discrete components (170) may be attached to the outside surfaces of the tapes.
Abstract:
Provided is a method for manufacturing a multilayer wiring board, by which interlayer connection is efficiently performed and a non-penetrating hole having a hollow structure or a through hole can be formed at the same time without damaging a plated portion on the inner wall of the through hole. A first printed board (1) is provided with a wiring, which has a wiring section and a bump mounting pad (14), and a substrate section. The method is provided with a step of forming a solder bump (3) on at least a bump mounting pad on the first printed board or a pad section of a second printed board (2) having the pad section (15) by using a solder paste, and a step of bonding the first printed board and the second printed board in layers by having an insulating adhesive (4) between the first printed board and the second printed board and electrically connecting the first printed board with the second printed board.
Abstract:
The present publication discloses a method for manufacturing a circuit-board structure. In the method, a conductor layer is made, which comprises a conductor foil (2) and a conductor pattern (6) on the surface of the conductor foil. A component (9) is attached to the conductor layer and the conductor layer is thinned, in such a way that the conductor material of the conductor layer is removed from outside the conductor pattern (6).
Abstract:
A light emitting diode (LED) package for high temperature operation which includes a printed wire board and a heat sink. The LED package may include a formed heat sink layer, which may be thermally coupled to an external heat sink. The printed wire board may include apertures that correspond to the heat sink such that the heat sink is integrated with the printed wire board layer. The LED package may include castellations for mounting the package on a secondary component such as a printed wire board. The LED package may further comprise an isolator disposed between a base metal layer and one or more LED die. Optionally, the LED die may be mounted directly on a base metal layer. The LED package may include a PWB assembly having a stepped cavity, in which one or more LED die are disposed. The LED package is advantageously laminated together using a pre-punched pre-preg material or a pressure sensitive adhesive.