Ultra thin ball grid array using a flex tape or printed wiring board substrate and method

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5620928
SERIAL NO

08439362

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A method of manufacturing an integrated circuit package assembly including (i) an integrated circuit die having a bottom surface and a plurality of input/output terminals, (ii) electrically conductive traces and/or contacts accessible from outside the assembly, and (iii) an encapsulating material encapsulating the integrated circuit die and portions of the electrically conductive traces and/or contacts will be disclosed. The method includes the following steps. First, a temporary support substrate or carrier having a top surface is provided for supporting the integrated circuit package as the package is being assembled. Then, the integrated circuit die is detachably supported on the top surface of the temporary support substrate. Each of the input/output terminals on the integrated circuit die are electrically connected to the electrically conductive traces and/or contacts. Next, the integrated circuit die and at least a portion of the electrically conductive traces and/or contacts are encapsulated with the encapsulating material such that the bottom surface of the integrated circuit die supported by the temporary support substrate is not covered by the encapsulating material. Finally, the encapsulated integrated circuit die is detached from the temporary support substrate.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
NATIONAL SEMICONDUCTOR CORPORATION12500 TI BOULEVARD M/S 3999 DALLAS TX 75243

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Belani, Jagdish G Cupertino, CA 6 395
Lee, Shaw W Cupertino, CA 3 145
Panczak, Anthony E Sunnyvale, CA 10 1202

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation