Method and system for increasing yield of vertically integrated devices
AssigneeReveo, Inc.
InventorSadeg M. Faris
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Abstract
A method for increasing the manufacturing yield for a vertically integrated device is disclosed. The devices are composed of one or more multiple layer die. The number of functioning layers of each multiple layer die is determined diagnostically. Each of said multiple layer die are sorted based on said number of functioning layers. Also disclosed are methods for combining sorted die, and methods for slicing sorted die, to form die with a desired number of known good layers.
Claims15
A method for increasing the manufacturing yield for a predetermined device, said device composed of one or more multiple layer die, said method comprising the steps of:
- determining diagnostically the number of functioning layers of each of said multiple layer die;
- sorting each of said multiple layer die based on said number of functioning layers,
- wherein said at least one of said multiple layer die comprises a first selectively bonded semiconductor layer vertically supported on a substrate, said bonded semiconductor layer containing weak bond regions and strong bond regions;
- a second selectively bonded semiconductor layer vertically supported on said first selectively bonded semiconductor layer;
- wherein a semiconductor device portion is created at or on said weak bond regions;
- wherein said semiconductor device portion vertically spans said first selectively bonded semiconductor layer and said second selectively bonded semiconductor layer;
- and
- wherein said die is formed by dicing said bonded semiconductor layers.
A method for providing a device having at least a predetermined number of known good layers, said device composed of one or more multiple layer die, said method comprising the steps of:
- determining diagnostically the number of functioning layers of each of said multiple layer die;
- sorting each of said multiple layer die based on said number of functioning layers into a plurality of bins, each bin having an associated minimum number of known good layers;
- selecting one of said multiple layer die having said predetermined number of known good layers from one of said bins having an associated minimum number of known good layers at least equal to said predetermined number of known good layers, wherein said at least one of said multiple layer die comprises
- first selectively bonded semiconducted layer vertically supported on a substrate, said bonded semiconductor layer containing weak bond regions and strong bond regions;
- a seconded selectively bonded semiconductor layer vertically supported on said first selectively bonded semiconductor layer;
- wherein a semiconductor device portion is created at or on said weak bond regions;
- wherein said semiconductor device portion vertically spans said first selectively bonded semiconductor layer and said second selectively bonded semiconductor layer;
- and wherein said die is formed by dieing said bonded semiconductor layers.
A method for providing a device having at least a predetermined number of known good layers, said device composed of one or more multiple layer die, said method comprising the steps of:
- determining diagnostically the number of functioning layers of each of said multiple layer die;
- sorting each of said multiple layer die based on said number of functioning layers into a plurality of bins, each bin having an associated minimum number of known good layers;
- selecting a plurality of said multiple layer die having a sum of known good layers at least equal to said predetermined number of known good layers;
- and
- combining said selected plurality of multiple layer die to form a combined die having a number of known good layers at least equal to said predetermined number of known good layers.
A method for providing a device having at least a predetermined number of known good layers, said device composed of one or more multiple layer die, said method comprising the steps of:
- determining diagnostically the number of functioning layers of each of said multiple layer die;
- sorting each of said multiple layer die based on said number of functioning layers into a plurality of bins, each bin having an associated minimum number of known good layers;
- selecting one of said a multiple layer die a number of known good layers greater than said predetermined number of known good layers;
- slicing said selected multiple layer die to form a first multiple layer die portion having a number of known good layers at least equal to said predetermined number of known good layers and a second multiple layer die portion;
- and
- sorting said second multiple layer die portion into one of said bins having a minimum number of known good layers corresponding to the number of known good layers of said second multiple layer die portion.
Dependencies are inferred from the claim text.