Patent ID: 6099597
Filing Date: 2000-08-08
Classification: G01R,H01L,Y10T

Abstract:
A picker nest for holding an integrated circuit package having a fragile component mounted on a package substrate, during testing of the integrated circuit package, said fragile component being exposed on said package substrate, the picker nest comprising:a picker nest head having a picker nest opening with vacuum suction for holding the integrated circuit package, wherein the dimensions of the picker nest opening are larger than the dimensions of the fragile component such that the picker nest opening surrounds said fragile component that is exposed on said package substrate when the picker nest is holding the integrated circuit package;an electrically conductive seal disposed on the picker nest head and disposed outside the perimeter of the picker nest opening for sealing the vacuum suction within the picker nest opening when the picker nest is holding the integrated circuit package,and wherein said conductive seal is disposed on a predetermined surface of the picker nest head facing said integrated circuit package with said predetermined surface being disposed nearest said integrated circuit package of any surfaces of said picker nest head facing said integrated circuit package such that said conductive seal is sandwiched between said predetermined surface of said picker nest head and said integrated circuit package and such that said predetermined surface of said picker nest head does not abut said integrated circuit package when the picker nest is holding the integrated circuit package,and wherein the perimeter of the picker nest opening is smaller than said integrated circuit package such that said conductive seal abuts said package substrate for sealing the vacuum suction within the picker nest opening when the picker nest is holding the integrated circuit package; andat least one supporting bar disposed on the picker nest head for supporting the package substrate when the picker nest is holding the integrated circuit package.