Thin handle substrate method and structure for fabricating devices using one or more films provided by a layer transfer process
First Claim
1. A method for fabricating one or more devices, the method comprising:
- providing a substrate, the substrate having a thickness of semiconductor material and a surface region, the substrate also having a cleave plane provided within the substrate and defining the thickness of semiconductor material;
joining the surface region of the substrate to a first handle substrate;
initiating and propagating a controlled cleaving action at a portion of the cleave plane to detach the thickness of semiconductor material from the substrate, while the thickness of semiconductor material remains joined to the first handle substrate, to expose a second surface region of the thickness of semiconductor material;
joining a backside of the first handle substrate to a second handle substrate;
processing the second handle substrate with the thickness of semiconductor material using one or more processes to form at least one integrated circuit device onto a portion of the thickness of semiconductor material;
forming a planarized surface region overlying the thickness of semiconductor material;
joining the planarized surface region to a face of a third handle substrate; and
removing the second handle substrate from the first handle substrate including the thickness of semiconductor material, while the face of the third handle substrate remains joined to the planarized surface region.
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Accused Products
Abstract
A method for fabricating one or more devices, e.g., integrated circuits. The method includes providing a substrate (e.g., silicon), which has a thickness of semiconductor material and a surface region. The substrate also has a cleave plane provided within the substrate to define the thickness of semiconductor material. The method includes joining the surface region of the substrate to a first handle substrate. In a preferred embodiment, the first handle substrate is termed a “thin” substrate, which provides suitable bonding characteristics, can withstand high temperature processing often desired during the manufacture of semiconductor devices, and has desirable de-bonding characteristics between it and a second handle substrate, which will be described in more detail below. In a preferred embodiment, the first handle substrate is also thick enough and rigid enough to allow for cleaving according to a specific embodiment.
343 Citations
35 Claims
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1. A method for fabricating one or more devices, the method comprising:
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providing a substrate, the substrate having a thickness of semiconductor material and a surface region, the substrate also having a cleave plane provided within the substrate and defining the thickness of semiconductor material; joining the surface region of the substrate to a first handle substrate; initiating and propagating a controlled cleaving action at a portion of the cleave plane to detach the thickness of semiconductor material from the substrate, while the thickness of semiconductor material remains joined to the first handle substrate, to expose a second surface region of the thickness of semiconductor material; joining a backside of the first handle substrate to a second handle substrate; processing the second handle substrate with the thickness of semiconductor material using one or more processes to form at least one integrated circuit device onto a portion of the thickness of semiconductor material; forming a planarized surface region overlying the thickness of semiconductor material; joining the planarized surface region to a face of a third handle substrate; and removing the second handle substrate from the first handle substrate including the thickness of semiconductor material, while the face of the third handle substrate remains joined to the planarized surface region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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Specification