Stretchable and foldable electronic devices
First Claim
1. A method of making a stretchable and foldable electronic device, said method comprising:
- providing a multilayer device comprising a substrate layer, a functional layer and one or more neutral mechanical surface adjusting layers,wherein said functional layer is supported by said substrate layer,wherein at least one of said one or more neutral mechanical surface adjusting layers is disposed above said functional layer,wherein at least one of said one or more neutral mechanical surface adjusting layers of said multilayer device has a property that is spatially inhomogeneous relative to a location in said multilayer device,wherein said spatially inhomogeneous property positions a spatially varying neutral mechanical surface coincident with or proximate to said functional layer, andwherein spatial variations in said spatially inhomogeneous property causes said spatially varying neutral mechanical surface to be positioned at different distances from a to surface of the multilayer device in different spatial regions of the multilayer device, relative to said functional layer.
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Accused Products
Abstract
Disclosed herein are stretchable, foldable and optionally printable, processes for making devices and devices such as semiconductors, electronic circuits and components thereof that are capable of providing good performance when stretched, compressed, flexed or otherwise deformed. Strain isolation layers provide good strain isolation to functional device layers. Multilayer devices are constructed to position a neutral mechanical surface coincident or proximate to a functional layer having a material that is susceptible to strain-induced failure. Neutral mechanical surfaces are positioned by one or more layers having a property that is spatially inhomogeneous, such as by patterning any of the layers of the multilayer device.
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Citations
32 Claims
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1. A method of making a stretchable and foldable electronic device, said method comprising:
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providing a multilayer device comprising a substrate layer, a functional layer and one or more neutral mechanical surface adjusting layers, wherein said functional layer is supported by said substrate layer, wherein at least one of said one or more neutral mechanical surface adjusting layers is disposed above said functional layer, wherein at least one of said one or more neutral mechanical surface adjusting layers of said multilayer device has a property that is spatially inhomogeneous relative to a location in said multilayer device, wherein said spatially inhomogeneous property positions a spatially varying neutral mechanical surface coincident with or proximate to said functional layer, and wherein spatial variations in said spatially inhomogeneous property causes said spatially varying neutral mechanical surface to be positioned at different distances from a to surface of the multilayer device in different spatial regions of the multilayer device, relative to said functional layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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15. A method of making an electronic device having a curved surface, said method comprising:
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providing a multilayer device comprising a substrate layer, a functional layer and one or more neutral mechanical surface adjusting layers, wherein said functional layer is supported by a substrate layer, wherein at least one of said one or more neutral mechanical surface adjusting layers is disposed above said functional layer, wherein at least one of said one or more neutral mechanical surface adjusting layers of said multilayer device has a property that is spatially inhomogeneous relative to a location in said multilayer device, wherein said spatially inhomogeneous property positions a spatially varying neutral mechanical surface coincident with or proximate to said functional layer; wherein spatial variations in said spatially inhomogeneous property causes said spatially varying neutral mechanical surface to be positioned at different distances from a top surface of the multilayer device in different spatial regions of the multilayer device, relative to said functional layer providing a curvilinear surface; and conformally wrapping said curvilinear surface with said multilayer device, thereby making an electronic device with a curved surface. - View Dependent Claims (16, 17, 18, 19)
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Specification