Stretchable electronic patch having a foldable circuit layer

Abstract

An electronic patch includes a foldable circuit layer that includes a foldable network that includes comprising: a plurality of electronic modules comprising a plurality of electronic components, and flexible straps that connect the plurality of electronic modules, wherein the flexible straps comprise conductive circuit that are conductively connected with the plurality of electronic components in the plurality of electronic modules. Neighboring electronic modules can undulate in opposite directions normal to the foldable circuit layer. The electronic patch also includes an elastic layer that encloses the foldable circuit layer.

Description

BACKGROUND OF THE INVENTION[0001]The present application relates to electronic devices, and in particular, to electronic patches that can adhere to human skin or the surface of an object, including curved surfaces.[0002]Wearable tags are a specific type of electronic patches. In general, electronic patches or stickers can be attached not only to human bodies but also to other objects such as merchandized goods such as computers, machineries, and clothes, packaging material and shipping boxes. Electronic patches can communicate with smart phones or other devices wirelessly, through NFC, Bluetooth, WiFi, or other methods.[0003]Electronic patches can be used for tracking objects, for performing functions such as producing sound, light or vibrations, and so on. As the applications and human needs become more sophisticated and complex, there are a rapidly increasing number of tasks that electronic patches are required to perform. Because of the complex curvatures of the objects, the elec...

AI Technical Summary

Benefits of technology

[0012]The presently disclosure attempts to address the aforementioned limitations in conventional electronic patches. The disclosed electronic patches are highly compliant and more stretchable, while also being able to support the circuit, chips, and other electronic components in the wearable electronic patches. The disclosed electronic patches can change their physical shape and dimension to relieve stresses such as repeated elongations, therefore increasing durability. The disclosed electronic patches can stay attached to skin for longer period of time enduring muscle movements while providing constant contact to the skin.

Problems solved by technology

As the applications and human needs become more sophisticated and complex, there are a rapidly increasing number of tasks that electronic patches are required to perform.

Despite initial development efforts, conventional wearable devices still face several drawbacks: they may not provide adequate comfort for users to wear them; they may not stay attached to user's body for the required length of time; they are usually not aesthetically appealing.

Human skin can move around with high percentage of deformation, whereas a conventional electronic patch cannot move with the same amount of strains as the skin, which is one reason for user's feeling of discomfort.

Another drawback of conventional electronic patches is that the rigid polymer substrate does not allow much breathability to the skin.

The build-up of sweat and moisture can cause discomfort and irritation to the skin, especially after wearing it for an extended period of time.

In addition, their rigid substrates are very difficult to conform to curved surfaces.

Moreover, conventional wearable devices are often not robust enough to sustain repeated elongations during the movements of the body that the electronic patches are attached to.

Under stress, different layers in electronic patches can break or delaminate rendering the patches inoperable.

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