Flexible, releasable strip leads
AssigneeTessera, Inc.
InventorsThomas Di Stefano, John W. Smith
Life of this patent
Estimating the term…
Abstract
A lead element for a microelectronic connection has a rigid body section connected to two parallel strip-like flexible leg sections. The leg sections each have tip ends that are offset from the rigid body section in a horizontal direction. The tip end of one leg section is permanently connected to a first microelectronic element. The tip end of the other leg section is releasably connected to the first microelectronic element and permanently connected to a second microelectronic element. Moving the first tip end relative to the second tip end in a vertical direction causes flexure of the leg sections in opposite directions.
Claims53
A combination of a microelectronic lead element connecting first and second microelectronic elements, said lead element comprising:
- a body section having a surface releasably attached to a first microelectronic element;
- a first strip-like flexible leg section having a surface releasably attached to the first microelectronic element, said first strip-like flexible leg section having a base end connected to said body section and a first tip end offset from said body section in a first horizontal offset direction, said first tip end permanently connected to the first microelectronic element;
- and
- a second strip-like flexible leg section having a surface releasably attached to the first microelectronic element, said second strip-like flexible leg section having a base end connected to said body section and a second tip end offset from said body section in a second horizontal offset direction, said second tip end releasably attached to the first microelectronic element and permanently connected to the second microelectronic element;
- wherein movement of said first tip end relative to said second tip end in vertical directions perpendicular to said first and second horizontal offset directions will cause flexure of said leg sections in opposite directions relative to said body section upon release of said leg sections and said second tip end from said releasable attachment to the first microelectronic element.
A combination of a microelectronic lead element connecting first and second microelectronic elements, said lead element comprising a body having first and second leg sections extending from said body each terminating at a tip end, the tip ends of said first and second leg sections having opposing first and second surfaces, a surface of said body and said first surface of said tip ends of said first and second leg sections are in contact with a first microelectronic element while said second surface of one of said tip ends at a position overlying its contact location with said first microelectronic element is permanently attached to a second microelectronic element.
A combination of a microelectronic lead element connecting first and second microelectronic elements, said lead element comprising a body having first and second leg sections extending from said body each having a tip end, said first and second leg sections separated by a slot having a rounded end, a surface of said body and said tip ends of said first and second leg sections are in contact with a first microelectronic element while one of said tip ends is permanently attached to a second microelectronic element.
A combination of a microelectronic lead element connecting first and second microelectronic elements, said lead element comprising a body having first and second leg sections extending from said body each having a tip end, a surface of said body and said tip ends of said first and second leg sections are in contact with a first microelectronic element while one of said tip ends is permanently attached to a second microelectronic element, wherein said first microelectronic element is a dielectric sheet having first and second primary surfaces, said body and said leg sections of said lead element having coplanar surfaces releasably attached to said dielectric sheet, and said dielectric sheet having a via proximate one of said tip ends extending between said first and second primary surfaces of said dielectric sheet.
A combination of a microelectronic lead element connecting first and second microelectronic elements, said lead element comprising a body having first and second leg sections extending from said body each having a tip end, a surface of said body and said tip ends of said first and second leg sections are in contact with a first microelectronic element while one of said tip ends is permanently attached to a second microelectronic element, wherein said first microelectronic element is a dielectric sheet, said body and said leg sections of said lead elements having coplanar surfaces releasably attached to said dielectric sheet.
A combination of a microelectronic lead element connecting first and second microelectronic elements, said lead element comprising a body having first and second leg sections extending from said body each having a tip end, said first and second leg sections arranged in noncollinear alignment with respect to each other, a surface of said body and said tip ends of said first and second leg sections are in contact with a first microelectronic element while one of said tip ends is permanently attached to a second microelectronic element.
Dependencies are inferred from the claim text.