Flexible and extendable electronic device based on biocompatible films and manufacturing method

Abstract

The invention relates to a flexible and extendable electronic device based on biocompatible films and a manufacturing method, and belongs to the technical field of flexible and extendable electronic devices. The flexible and extendable electronic device is technically characterized in that the biocompatible films are used as an encapsulation layer and a substrate layer of the flexible and extendable electronic device, a bonding layer used for enhancing the boundary strength between the encapsulation layer and a functional layer can be further arranged between the encapsulation layer and the functional layer, and an adhesive layer used for enhancing the adhesive force of the device with the surface of an object to be tested is arranged underneath the substrate layer; the functional layer is of a flexible and extendable structure. In the manufacturing process of the flexible and extendable electronic device, a transfer printing technology based on a solution is mainly adopted to achieve integration of the functional layer and a flexible substrate. The flexible and extendable electronic device structurally keeps and even improves flexibility and extensibility. Meanwhile, compatibility features such as waterproofness, breathability and low allergenicity of the flexible and extendable electronic device allow the flexible and extendable electronic device to normally work on the surface of a human body for more than 24 hours without causing a foreign body feeling and discomfort, and skin soaking or rubefaction or other anaphylactic reactions caused by poor biocompatibility can be avoided.

Description

technical field [0001] The invention relates to a flexible and extensible electronic device based on a biocompatible film and a preparation method thereof, which can be used for but not limited to various sign sensors. Background technique [0002] In medical care and health monitoring, various sensors are always required to monitor human physiological information intermittently or in real time. Routine measurements include body temperature, pulse, heart rate, ECG, blood oxygen and other signals. At present, whether it is clinically or in health care consumer electronics, the equipment used to test the corresponding signals adopts a hard-to-soft contact method, such as mercury thermometers, finger clip pulse oximeters, ECG electrode stickers, etc. They all use reliable and effective physical and chemical principles, but there are some unavoidable problems in the hard-to-soft contact: the discomfort brought by the hard contact to the patient may affect the performance of norm...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a flexible and extensible electronic device based on a biocompatible film and its preparation method to solve the problem of biocompatibility when the flexible and extensible electronic device is combined with the human body, including but not limited to: ① Biocompatibility: Not only does the device not contain chemical components that are harmful to the human body chemically, but it must also be physically breathable so that the sweat on the body surface can evaporate normally and avoid impregnation or allergic reactions; ②) Flexibility and extensibility: flexibility requires devices ( Including base layer and functional layer) have small bending stiffness, can be easily bent to adapt to the natural curvature of the surface of human tissue, ductility requires the device to have small tensile stiffness, and can be deformed in the in-plane direction to adapt to non-flexible Extensive human tissue surface

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