Controlled buckling structures in semiconductor interconnects and nanomembranes for stretchable electronics
First Claim
1. A method of making a stretchable and flexible device, the method comprising the steps of:
- providing a flexible substrate having a receiving surface;
bonding a plurality of device components to said receiving surface, wherein at least one device component is connected to another device component by one or more interconnects, wherein at least two interconnects are electrically connected to a first device component; and
wherein during said bonding step said at least two interconnects extend along at least two different directions from said first device component in a plane of said receiving surface to form a two-dimensional device array;
generating a change in a level of strain to said flexible substrate receiving surface in a first direction and a second direction;
wherein said at least one device component is bonded to said flexible substrate at a first level of strain and said change in strain causes a portion of a first interconnect to bend and separate from said flexible substrate in said first direction and a portion of a second interconnect to bend and separate from said flexible substrate in a second direction;
and each of said at least two interconnects have a region that is curved and physically separated from said flexible substrate.
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Abstract
In an aspect, the present invention provides stretchable, and optionally printable, components such as semiconductors and electronic circuits capable of providing good performance when stretched, compressed, flexed or otherwise deformed, and related methods of making or tuning such stretchable components. Stretchable semiconductors and electronic circuits preferred for some applications are flexible, in addition to being stretchable, and thus are capable of significant elongation, flexing, bending or other deformation along one or more axes. Further, stretchable semiconductors and electronic circuits of the present invention are adapted to a wide range of device configurations to provide fully flexible electronic and optoelectronic devices.
193 Citations
24 Claims
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1. A method of making a stretchable and flexible device, the method comprising the steps of:
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providing a flexible substrate having a receiving surface; bonding a plurality of device components to said receiving surface, wherein at least one device component is connected to another device component by one or more interconnects, wherein at least two interconnects are electrically connected to a first device component; and
wherein during said bonding step said at least two interconnects extend along at least two different directions from said first device component in a plane of said receiving surface to form a two-dimensional device array;generating a change in a level of strain to said flexible substrate receiving surface in a first direction and a second direction; wherein said at least one device component is bonded to said flexible substrate at a first level of strain and said change in strain causes a portion of a first interconnect to bend and separate from said flexible substrate in said first direction and a portion of a second interconnect to bend and separate from said flexible substrate in a second direction; and each of said at least two interconnects have a region that is curved and physically separated from said flexible substrate. - View Dependent Claims (2, 3, 4, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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5. The method of 1, wherein the at least two interconnects each have a first end and a second end, wherein said region that is curved and physically separated from said flexible substrate is a central portion between said first and said second ends;
- wherein;
the first end of each of the at least two interconnects is in electrical communication with said first device component; each central portion of each of the at least two interconnects comprises at least two bent configuration regions and at least one contact point disposed between the at least two bent configuration regions; and each of the at least one contact point is in physical communication with the receiving surface of the flexible substrate. - View Dependent Claims (6, 7, 8)
- wherein;
Specification