摘要:
A chip-under-chip module and a substrate for making the module. The module comprises a first larger chip, a second smaller chip attached to the underside of the first chip, a substrate having a top surface to which the first chip is mounted, a cavity into which the second chip fits when the first chip is mounted on the top surface, and an access channel connecting the cavity to the top surface. Underfill is disposed under the first chip between the first chip and the substrate, between the first and second chips, within the cavity, and within the access channel. A process for manufacture of such a module comprises the steps of forming the substrate having the cavity and access channel in the substrate, connecting the first chip to the substrate, and dispensing underfill through the access channel.
摘要:
The present invention relates generally to a new method for improving the reliability of cooling designs using thermal paste to cool chips in semiconductor modules and structure thereof. More particularly, the invention encompasses a structure and a method that uses surface chemistry modification of the inside of the thermal cooling caps where it contacts thermal paste. The internal surface of the cap is modified by embedding particles that have the same chemical composition as one or more of the solids used in the thermal paste. The particles may be embedded in the cap by casting, grit blasting, or pressing the particles permanently into the surface.
摘要:
A heat sink assembly and method for attaching a multi-chip module cap to a polymeric heat sink adhesive by means of a thin adhesion-promoting metal film layer, which provides an interfacial bond between the cap and polymeric adhesive meeting package performance and reliability requirements. There is also a method of promoting adhesion between a silicon-containing polymeric adhesive and a metal surface using the thin adhesion-promoting metal film layer and the products thereof.
摘要:
Compositions of the current invention are directed toward inhibiting the growth of microorganisms, particularly fungi. The compositions consist of chemically-synthesized antibiotics comprising certain amino acids. Methods of identifying particular antibiotic compositions from libraries of such compositions are disclosed. In addition, methods for preventing microbial growth in plants and animals are disclosed.
摘要:
An apparatus for catching insects is disclosed, which includes an insect-carrying chamber having an opening large enough to allow an insect to pass therethrough. The opening is closable by way of a shutter so that when the insect enters the chamber, it may be trapped therein by moving the shutter to its closed position.