UV light sensitive die-pac for securing semiconductor dies during transport
First Claim
1. A structure for releasably holding a microcircuit die which comprises:
- a plate having an upper face and formed from a material which is penetrable to light; and
a layer of adhesive over a section of said upper face, said layer of adhesive having a coefficient of friction sensitive to light, whereby a die held in a fixed position with respect to said upper face by said layer of adhesive may be released by exposing said layer of adhesive to light through said section.
1 Assignment
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Accused Products
Abstract
A structure for protecting semiconductor integrated microcircuit dice during shipping. The structure secures the position of the die atop an ultra-violet (UV) light penetratable plate using a UV light sensitive adhesive layer. Once the structure reaches its destination, prior to removal of the die, the adhesive layer is exposed to ultraviolet light. This exposure reduces the adhesiveness or coefficient of friction of the layer, thereby facilitating die removal from the structure. The UV sensitive adhesive does not leave contaminating silicon residue on the removed die. The invention may be realized using currently commercially available UV tape and a modified die-pac having a UV light penetratable window.
78 Citations
12 Claims
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1. A structure for releasably holding a microcircuit die which comprises:
a plate having an upper face and formed from a material which is penetrable to light; and
a layer of adhesive over a section of said upper face, said layer of adhesive having a coefficient of friction sensitive to light, whereby a die held in a fixed position with respect to said upper face by said layer of adhesive may be released by exposing said layer of adhesive to light through said section.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A package for shipping at least one die, said package comprising:
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a bed including at least a portion formed of a material penetrable by ultraviolet light; a cover releasably mated to said bed and defining an inner chamber therewith, said inner chamber sized and dimensioned to accept at least one die therein; and a layer of adhesive secured over a surface of said portion of said bed for releasably holding at least one die in a fixed position within said inner chamber, said adhesive having a first adhesiveness alterable to a second adhesiveness by exposure of said adhesive to ultraviolet light. - View Dependent Claims (12)
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Specification