摘要:
Methods of forming a microelectronic packaging structure and associated structures formed thereby are described. Those methods may include attaching a die to a carrier material, wherein the carrier material comprises a top layer and a bottom layer separated by an etch stop layer; forming a dielectric material adjacent the die, forming a coreless substrate by building up layers on the dielectric material, and then removing the top layer carrier material and etch stop layer from the bottom layer carrier material.
摘要:
A structure that may be used in substrate solder bumping comprises a substrate (110), a solder resist layer (120) disposed over the substrate, a plurality of solder resist openings (121) in a surface (122) of the solder resist layer, a conformal barrier layer (130) having a first portion (131) over the surface of the solder resist layer and a second portion (132) in the solder resist openings, a mask layer (140) over the first portion of the conformal barrier layer, and a solder material (150) in the solder resist openings over the metal layer. The conformal barrier layer acts as a barrier against interaction between the solder resist layer and the mask layer during solder reflow.
摘要:
A structure that may be used in substrate solder bumping comprises a substrate (110), a solder resist layer (120) disposed over the substrate, a plurality of solder resist openings (121) in a surface (122) of the solder resist layer, a conformal barrier layer (130) having a first portion (131) over the surface of the solder resist layer and a second portion (132) in the solder resist openings, a mask layer (140) over the first portion of the conformal barrier layer, and a solder material (150) in the solder resist openings over the metal layer. The conformal barrier layer acts as a barrier against interaction between the solder resist layer and the mask layer during solder reflow.
摘要:
A method of providing electrically conductive bumps on electrode pads of a microelectronic substrate. The method includes: providing a microelectronic substrate including electrode pads thereon; disposing a mask onto the substrate such that openings defined in the mask are placed in registration with the electrode pads; providing solder portions onto respective ones of the electrode pads through the mask; reflowing the solder portions in a forming gas atmosphere to form solder bumps on respective ones of the electrode pads; and removing the mask after reflowing.