Abstract:
A multi-layer circuit board includes a plurality of circuit substrates, a plurality of dielectric layers, and a plurality of metal bumps. Each circuit substrate includes two first trace layers and an insulating layer between the two trace layers. Each electric layer is laminated between two neighboring circuit substrates. At latest one metal bump is arranged between each two neighboring circuit substrates. Each metal bump passes through one dielectric layer. Two opposite ends of each metal bump are connected with the trace layer of the circuit substrate to be electrically connected to the two neighbor circuit substrates.
Abstract:
A method for manufacturing an IC substrate includes following steps: providing a roll of double-sided flexible copper clad laminate; converting the roll of double sided flexible copper clad laminate into a roll of double sided flexible wiring board in a roll to roll manner; cutting the roll of double-sided flexible wiring board into a plurality of separate sheets of double sided flexible wiring board; forming first and second rigid insulating layers on the first and second wiring layers of each sheet of double sided flexible wiring board; forming third and fourth wiring layers on the first and second rigid insulating layers, and electrically connecting the first and third wiring layers, and electrically connecting the fourth and second wiring layers, thereby obtaining a sheet of substrate having a plurality of IC substrate units; and cutting the sheet of substrate into separate IC substrate units.
Abstract:
A printed circuit board with an embedded component includes a double-sided wiring board, an electronic component, and many conductive pastes. The wiring board includes a first wiring layer, a base layer, a first insulating layer, and a second wiring layer. The base layer has an opening exposing a portion of the second surface of the first insulating layer to the outside. The second wiring layer includes electrical contact pads. The conductive blind vias are formed in the first insulating layer. Each electrical contact pad is electrically connected to an end of the corresponding conductive blind via. The other ends of the conductive blind vias are adjacent to the first surface. A filling through hole is formed in the double-sided wiring board. The conductive pastes are respectively electrically connected to the conductive blind vias. The electronic component is adhered to and electrically connected to the conductive paste.
Abstract:
A chip packaging substrate includes a dielectric layer, a first inner wiring layer embedded in the dielectric layer, an outer wiring layer, and many conductive connection points. The outer wiring layer is formed at one side of the dielectric layer, and is electrically connected to the first inner wiring layer through many first conductive vias in the dielectric layer. The conductive connection points are formed at the other side of the dielectric layer, and are electrically connected to the first inner wiring layer through many second conductive vias in the dielectric layer.
Abstract:
A packaging substrate includes a copper foil substrate, a sputtering copper layer, a dielectric layer, a plurality of electrically conductive connection points, and an electrically conductive pattern layer. The sputtering copper layer is formed on the copper foil substrate. The electrically conductive connection points are formed on a surface of the sputtering copper layer, which is away from the copper foil substrate. The dielectric layer is sandwiched between the electrically conductive pattern layer and the sputtering copper layer. A plurality of first blind via are formed in the first dielectric layer. The electrically conductive pattern layer includes a plurality of electrically conductive traces and a plurality of connection pads. Each electrically conductive connection point is electrically connected to the electrically conductive trace by the first blind via.
Abstract:
An exemplary multi-layer printed circuit board includes a multi-layer substrate with a recess, and a first high density wiring substrate received in the recess. The multi-layer substrate includes a base layer, a first wiring layer arranged on the base layer, first insulating layers, and third wiring layers. The first insulating layers and the third wiring layers are alternately arranged on the first wiring layer, such that there is one first insulating layer sandwiched between each two adjacent wiring layers of the first wiring layer and the third wiring layers. The first high density wiring substrate includes first high density wiring layers and third insulating layers, which are alternately arranged on each other. An outmost first high density wiring layer is exposed outside to define third electrical contact pads corresponding to the first electrical contact pads.
Abstract:
A heat-dissipating interposer includes an insulating base, a plurality of conductive pillars and a thermal conducting frame. The insulating base includes a first surface and an opposite second surface. The conductive pillars are arranged on the insulating base. The conductive pillars protrude from the second surface. The height of the conductive pillars relative to the second surface is greater than the thickness of the insulating base. The thermal conducting frame is placed on the second surface and receives a heat-generating component. The interposer can be used in a package on package structure.
Abstract:
A packaging substrate includes an insulating layer, a wiring layer and a solder mask. The insulating layer and the solder mask being arranged on two opposite sides of the wiring layer. The insulating layer defines a via hole. The wiring layer covers the via hole. The wiring layer includes a pad area. Two sides of the pad area are respectively exposed outside from the solder mask and in the via hole.
Abstract:
A package on package structure includes a connection substrate having a main body and electrically conductive posts, the main body includes a first surface and an opposite second surface, and each electrically conductive post passes through the first and second surfaces, and each end of the two ends of the electrically conductive post protrudes from the main body; a first package device arranged on a side of the first surface of the connection substrate; a package adhesive arranged on a side of the second surface of the connection substrate; and a second package device arranged on a side of the package adhesive furthest away from the first package device.
Abstract:
A packaging substrate includes a supporting sheet, a copper foil, a number of connecting pads, a number of solder balls, a resin layer, a wiring layer and a solder mask layer. The copper foil is attached on a surface of the supporting sheet through an adhesive sheet. The connecting pads are formed on the copper foil. The solder balls are formed on the connecting pads. The resin layer infills the gaps between the solder balls. The wiring layer is formed on the resin layer and the solder balls. Terminal portions of the solder balls facing away from the connecting pads are electrically connected to the wiring layer. The solder mask layer is formed on the wiring layer. The solder mask layer defines a number of openings exposing portions of the wiring layer. The portions of the wiring layer exposed through the openings serve as contact pads.