Abstract:
A package structure includes a flexible-rigid PCB and a chip. The flexible PCB includes a flexible PCB, a glue piece and an outer trace layer. The flexible PCB includes two bending portions and a fixing portion connected between the two bending portions, and includes an insulating layer and an inner trace layer formed on the insulating layer. The glue piece is adhered to the fixing portion. The outer trace layer is adhered to the glue piece and includes conductive pads. The fixing portion, the glue piece and the outer trace layer form a rigid portion, the bending portions form flexible portions. The chip is packaged on the rigid portion and includes electrode pads electrically connected to the conductive pads.
Abstract:
A method for manufacturing a multi-layer circuit board includes steps of: providing three copper clad laminates; forming trace layers in each copper clad laminate by selectively removing portions of copper layer of each copper clad laminate to obtain three first circuit substrates; laminating a dielectric layer on two of the first circuit substrates to obtain two second circuit substrates; forming a metal bump on the trace layer he other one of the three first circuit substrate to obtain a third circuit substrate; stacking and laminating the third circuit substrate between the two second circuit substrate to obtain a multi-layer circuit board.
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 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.
Abstract:
A method for manufacturing a package on package structure includes the steps of: providing a connection substrate comprising a main body and electrically conductive posts, the main body comprising a first surface and an opposite second surface, each electrically conductive post passing through the first and second surfaces, and each end of the two ends of the electrically conductive post protruding from the main body; arranging a first package device on a side of the first surface of the connection substrate, arranging a package adhesive on a side of the second surface of the connection substrate, thereby obtaining a semi-finished package on package structure; and arranging a second package device on a side of the package adhesive furthest from the first package device, thereby obtaining a package on package structure.
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 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 embedded component includes a double-sided printed circuit board, an electronic component, a plurality of conductive paste blocks, an insulating layer and a wiring layer near the first wiring layer, an insulating layer and a wiring layer near the second wiring layer. The double-sided printed circuit board comprising a first wiring layer, a base, and a second wiring layer. The first wiring layer and the second wiring layer are arranged on opposite sides of the base. The second wiring layer includes a plurality of electrical contact pads. The base defines a number of conductive vias. Each electrical contact pad is aligned with and electrically connected to one corresponding conductive via. The conductive paste blocks are electrically connecting to the conductive vias. The electronic component is electrically connected to the conductive paste blocks. The two insulating layers cover the electronic component and the second wiring layer.
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.