Electronic part and circuit substrate

• US 7,874,847 B2
• Filed: 09/14/2007
• Issued: 01/25/2011
• Est. Priority Date: 03/18/2005
• Status: Expired due to Fees

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Matsui, Jun, Terada, Koji, Nobuhara, Hiroyuki
• Primary Examiner(s): HARVEY, JAMES R
• Application Number:
  US11/898,713
• Publication Number:
  US 20080018423A1
• Time in Patent Office: 1,229 Days
• Field of Search: 439/60, 439/66, 439/78, 439/82, 439/924.1
• US Class Current: 439/66
• CPC Class Codes: H01R 13/2421 using coil springs
• CPC Class Codes: H05K 2201/094 Array of pads or lands differing from one another, e.g. in size, pitch, thickness; Using different connections on the pads using different types of conductors H05K2201/0391
• CPC Class Codes: H05K 2201/10734 Ball grid array [BGA]; Bump grid array
• CPC Class Codes: H05K 3/326 the printed circuit having integral resilient or deformable parts, e.g. tabs or parts of flexible circuits H05K3/365 takes precedence
• CPC Class Codes: H05K 3/3436 having an array of bottom contacts, e.g. pad grid array or ball grid array components
• CPC Class Codes: H05K 3/4092 Integral conductive tabs, i.e. conductive parts partly detached from the substrate

Abstract

Electrical connection is established by bringing solder bumps formed as electrical connecting terminals of an electronic part and spiral contactors formed as electrical contactors of a circuit substrate into contact with each other. The solder bumps are formed such that heights thereof relative to a surface on which the solder bumps are formed are different from each other.

Claims

1. An electronic part that is mounted on a circuit substrate having a plurality of elastic electrical contactors, and that includes a plurality of electrical connecting terminals enabling electrical connection with the circuit substrate by contacting the electrical contactors, wherein

the electrical connecting terminals are two-dimensionally arranged to be different in height from each other, the height relative to a surface on which the electrical connecting terminals are arranged, and

the electrical contactors are spherical terminals.

2. An electronic part that is mounted on a circuit substrate having a plurality of elastic electrical contactors, and that includes a plurality of electrical connecting terminals enabling electrical connection with the circuit substrate by contacting the electrical contactors, wherein

the electrical connecting terminals are two-dimensionally arranged to be different in height from each other, the height relative to a surface on which the electrical connecting terminals are arranged, and

the electrical connecting terminals are spherical connecting terminals formed on electrodes that have different diameters and are formed in the electronic part.