The present invention provides stretchable, and optionally printable, semiconductors and electronic circuits capable of providing good performance when stretched, compressed, flexed or otherwise deformed. Stretchable semiconductors and electronic circuits of the present invention 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 may be adapted to a wide range of device configurations to provide fully flexible electronic and optoelectronic devices.

A method for applying a bonding layer that is comprised of a basic layer and a protective layer on a substrate with the following method steps: application of an oxidizable basic material as a basic layer on a bonding side of the substrate, at least partial covering of the basic layer with a protective material that is at least partially dissolvable in the basic material as a protective layer. In addition, the invention relates to a corresponding substrate.

A method for applying a bonding layer that is comprised of a basic layer and a protective layer on a substrate with the following method steps: application of an oxidizable basic material as a basic layer on a bonding side of the substrate, at least partial covering of the basic layer with a protective material that is at least partially dissolvable in the basic material as a protective layer. In addition, the invention relates to a corresponding substrate.

A method of manufacturing a display device includes: immersing a mask including openings, in a solution; seating light-emitting diode chips respectively in the openings of the mask; arranging a first flexible substrate including first wirings thereon, below the mask, and aligning the first wirings to respectively correspond to the openings of the mask; removing from the solution, the first flexible substrate with the first wirings corresponding to the openings of the mask together with the mask with the light-emitting diode chips seated in the openings thereof; bonding the light-emitting diode chips and the first wirings to each other; providing a second flexible substrate including second wirings thereon, and aligning the second wirings to respectively correspond to the light-emitting diode chips; and bonding the light-emitting diode chips and the second wirings to each other, to form the display device.

A method of manufacturing a display device includes: immersing a mask including openings, in a solution; seating light-emitting diode chips respectively in the openings of the mask; arranging a first flexible substrate including first wirings thereon, below the mask, and aligning the first wirings to respectively correspond to the openings of the mask; removing from the solution, the first flexible substrate with the first wirings corresponding to the openings of the mask together with the mask with the light-emitting diode chips seated in the openings thereof; bonding the light-emitting diode chips and the first wirings to each other; providing a second flexible substrate including second wirings thereon, and aligning the second wirings to respectively correspond to the light-emitting diode chips; and bonding the light-emitting diode chips and the second wirings to each other, to form the display device.

An inter-substrate bond structure includes an adhesion layer that attached to a first substrate, and an outer gas-permeable layer coupled to the adhesion layer. The outer gas-permeable layer expands and fractures in response to absorbing a gas. The inter-substrate bond structure includes an outer bond layer coupled to the outer gas-permeable layer. The outer bond layer forms an initial thermocompression bond with a mating layer on a second substrate. The initial thermocompression bond bonds the first substrate to the second substrate with the inter-substrate bond structure. The fracture in the inter-substrate bond structure debonds the first substrate from the second substrate while leaving a first portion of the inter-substrate bond structure attached to the first substrate.

A reversable attachment system includes an adhesion layer, an inter-substrate bond structure, a mating layer and an extension actuator. The adhesion layer is configured to attach to a first substrate. The inter-substrate bond structure is coupled to the adhesion layer. The mating layer is configured to attach to a second substrate. The extension actuator is configured to attach to the second substrate and expand in response to an absorption of a gas. The inter-substrate bond structure is configured to form an initial thermocompression bond with the mating layer in response to an applied pressure and an applied heat. The expansion of the extension actuator in response to absorbing the gas detaches the inter-substrate bond structure from the mating layer.