Land grid array electrical contact coating
AssigneeInternational Business Machines Corporation
InventorsKevin O'Connell, Mark K. Hoffmeyer, Matthew Doyle
Life of this patent
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Abstract
An land grid array (LGA) or hybrid land grid array (HLGA) includes a socket housing and a plurality of electrical contacts. The socket housing is made of a first material that defines a first dielectric constant. The plurality of electrical contacts extends through the socket housing to electrically couple a printed circuit board on a first side of the socket housing to a processor on a second side of the socket housing. A coating of a second material that defines a second dielectric constant that is higher than the first dielectric constant covers surfaces of a subset of the plurality of electrical contacts.
Claims20
A chip component comprising:
- a socket housing made of a first material that defines a first dielectric constant;
- a plurality of electrical contacts that extend through the socket housing to electrically couple a printed circuit board on a first side of the socket housing to a processor on a second side of the socket housing;
- and
- a coating of a second material that defines a second dielectric constant higher than the first dielectric constant that covers respective surfaces of a subset of the plurality of electrical contacts that are configured to supplement power supply decoupling at a load to provide additional parallel capacitance.
A land grid array (LGA) comprising:
- a socket housing made of a first material that defines a first dielectric constant;
- a plurality of electrical contacts that extend through the socket housing;
- and
- a coating of a second material that defines a second dielectric constant higher than the first dielectric constant that covers a subset of the plurality of electrical contacts such that a localized capacitance of the LGA is increased in order to supplement power supply decoupling at a load to provide additional parallel capacitance.
A method comprising:
- applying a coating that defines a first dielectric constant to some portion of a sheet of a conductive material that defines a second dielectric constant that is lower than the first dielectric constant;
- cutting a plurality of shapes from the sheet of conductive material such that the coating is on some surfaces of the shapes;
- folding the plurality of shapes into a plurality of electrical contacts;
- and
- assembling the plurality of electrical contacts into a socket housing of a land grid array (LGA) such that each of the plurality of electrical contacts extend through the socket housing and a localized capacitance of the chip component is increased as a result of the coating on some surfaces of the plurality of electrical contacts.
Dependencies are inferred from the claim text.