Fabrication processes for monolithic electronic modules
First Claim
1. A process for metallizing a selected side surface of each electronic module of multiple electronic modules, said metallizing process comprising the steps of:
- (a) forming a stack including said multiple electronic modules such that the selected side surfaces of the multiple electronic modules are coplanar, said forming of the stack including utilizing a workpiece between two adjacent electronic modules in the stack, said workpiece having a first side surface corresponding to the coplanar selected side surfaces of the multiple electronic modules, said first side surface of said workpiece having at least a region that is non-coplanar with the coplanar selected side surfaces of the multiple electronic modules; and
(b) metallizing said selected side surfaces of the multiple electronic modules in said stack to form a stack metallization pattern, said stack metallization pattern being automatically discontinuous at said region of non-coplanarity of said first side surface of said workpiece with said coplanar selected side surfaces of the multiple electronic modules.
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Abstract
This invention comprises various high production methods for simultaneously forming surface metallizations on a plurality of monolithic electronic modules. Each monolithic electronic module may comprise a single semiconductor chip or multiple semiconductor chips. The methods can employ a workpiece which automatically discontinues side surface metallization between different electronic modules in the stack. Multiple workpieces are interleaved within the stack between the electronic modules. Each workpiece may include a transfer layer(s) for permanent bonding to an end surface of an adjacent electronic module in the stack. This transfer layer may comprise an insulation layer, a metallization layer, an active circuit layer, or any combination thereof. End surface metallization can thus be provided contemporaneous with side surface metallization of multiple electronic modules.
104 Citations
42 Claims
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1. A process for metallizing a selected side surface of each electronic module of multiple electronic modules, said metallizing process comprising the steps of:
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(a) forming a stack including said multiple electronic modules such that the selected side surfaces of the multiple electronic modules are coplanar, said forming of the stack including utilizing a workpiece between two adjacent electronic modules in the stack, said workpiece having a first side surface corresponding to the coplanar selected side surfaces of the multiple electronic modules, said first side surface of said workpiece having at least a region that is non-coplanar with the coplanar selected side surfaces of the multiple electronic modules; and (b) metallizing said selected side surfaces of the multiple electronic modules in said stack to form a stack metallization pattern, said stack metallization pattern being automatically discontinuous at said region of non-coplanarity of said first side surface of said workpiece with said coplanar selected side surfaces of the multiple electronic modules. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A process for applying a transfer layer to a planar main surface of a semiconductor chip, said process comprising the steps of:
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(a) providing a workpiece having multiple layers, one layer of said multiple layers comprising the transfer layer; (b) temporarily affixing said workpiece to the planar main surface of the semiconductor chip such that the transfer layer is adhered to the planar main surface of the semiconductor chip; and (c) separating part of the workpiece from the semiconductor chip, said separating being such that the transfer layer remains adhered to the planar main surface of the semiconductor chip. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26)
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27. A process for metallizing a side surface of a semiconductor chip, said process comprising the steps of:
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(a) providing a workpiece; (b) affixing the workpiece to the semiconductor chip; (c) directly metallizing the side surface of the semiconductor chip to produce a metallization pattern thereon; and (d) separating the workpiece from the semiconductor chip without damaging the metallization pattern on the side surface of the semiconductor chip. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35)
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36. A process for metallizing a selected side surface and an end surface of an electronic module, said process comprising the steps of:
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(a) providing a workpiece having multiple layers, one layer of said multiple layers comprising a metallization layer; (b) temporarily affixing the workpiece to the electronic module such that the metallization layer of the workpiece is bonded to the end surface of the electronic module; (c) forming a metallization pattern on the selected side surface of the electronic module; and (d) separating a part of the workpiece from the electronic module such that the metallization layer remains bonded to the end surface of the electronic module. - View Dependent Claims (37, 38, 39, 40, 41, 42)
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Specification