Browse Prior Art Database

Oriented Device Separation Tool

IP.com Disclosure Number: IPCOM000080647D
Original Publication Date: 1974-Jan-01
Included in the Prior Art Database: 2005-Feb-27
Document File: 2 page(s) / 32K

Publishing Venue

IBM

Related People

Blanchard, GK: AUTHOR [+4]

Abstract

Described is a clamp for holding and handling diced semiconductor or integrated chips with respect to a cover plate, to maintain the chips in a fixed position. The clamps are primarily designed to maintain a clearance between the product and tooling, to clamp the dicing block over the retaining plate, and clamp the cover to the retaining plate after the dicing block has been removed.

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Oriented Device Separation Tool

Described is a clamp for holding and handling diced semiconductor or integrated chips with respect to a cover plate, to maintain the chips in a fixed position. The clamps are primarily designed to maintain a clearance between the product and tooling, to clamp the dicing block over the retaining plate, and clamp the cover to the retaining plate after the dicing block has been removed.

In the figure, clamp 10 is shown retaining a cutting block 11 in fixed parallel position with a retaining plate 12 having a cover 13 affixed thereto. Clamp 10 comprises a knurled nut 14 having a knurled knob 15 coupled thereto. The knurled knob 15 further carries a pair of washers 16 and 17 maintained in a spaced apart relationship by a spring 18. The knurled knob 15 has a critical dimension from the lower face 19 to its lower end 20. This dimension plus the thickness of the plate 12 must exceed the sum of the thickness of the dicing block, the adhesive layer, and the semiconductor chips mounted on the layer. This insures that the chip faces never contact the plate 12.

The dicing block 11 is inserted between the bottom face 19 of the knurled knob 15 and the upper spring loaded washer 16. The upper washer 16 being spring loaded, forces the rim of the dicing block 11 against the lower face 19 of the knurled knob 15, and the lower washer 17 is forced against the cover 13 which is pressed against the retaining plate 12.

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