Abstract A flexible electrical connection, and method for making such a connection, for mounting an electronic device, such as a semiconductor chip made primarily of silicon, on an organic substrate, such as a printed circuit board made of a glass material impregnated with epoxy resin, are disclosed. The flexible electrical connection comprises a circuit line attached to the surface of the organic substrate and having a floating terminus in a relatively low adhesive area of the organic substrate where it is desired to mount the electronic device on the organic substrate. The floating terminus includes a stress relief bend, and the flexible electrical connection relieves stresses, such as thermal stresses, which may otherwise damage the physical and/or electrical connection between the electronic device and the floating terminus of the flexible electrical connection when the electronic device is mounted on the surface of the organic substrate.
A flexible electrical connection for mounting an electronic device made primarily of silicon on a circuitized substrate made primarily of an organic material, comprising: a plurality of adjacent circuit lines each having a terminus floating on a relatively low adhesive area of the circuitized substrate, each terminus having a generally "U" shaped stress relief bend nested within the generally "U" shaped stress relief bend of the circuit line adjacent to it, and each circuit line having a portion, extending from its terminus, which is fixed to a relatively high adhesive area of the circuitized substrate.
Claim 2
Dependent Claim
95 words
A flexible electrical connection for mounting an electronic device made primarily of silicon on a circuitized substrate made primarily of an organic material, comprising: a plurality of adjacent circuit lines each having a terminus floating on a relatively low adhesive area of the circuitized substrate, each terminus having a generally "U" shaped stress relief bend nested within the generally "U" shaped stress relief bend of the circuit line adjacent to it, and each circuit line having a portion, extending from its terminus, which is fixed to a relatively high adhesive area of the circuitized substrate.
Claim 3
Dependent Claim
51 words
A flexible electrical connection as recited in claim 1 wherein said stress relief bend is generally "U" shaped, with the "U" having a height of approximately two to three times the width of said circuit line, and a width of approximately four to six times the width of said circuit line.