Constraining ring for use in electronic packaging

Details Constraining ring for use in electronic packaging Constraining ring for use in electronic packaging

1996-11-08

1999-03-09

Krynski, William

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

428210, 428220, 257700, 257701, 257702, 257703, B32B 900, H01L 23053

Patent

active

058797866

ABSTRACT:
A constraining ring increases the modulus of an interconnect substrate to maintain flatness of the substrate. The constraining ring is made of materials selected to match the coefficient of thermal expansion of the substrate to that of the constraining ring. Circuit components including capacitors and resistors are formed on the constraining ring to provide enhanced electrical properties without adding to the size of the device.

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