Transient PCB Biodegradable Materials for E-Waste Reduction
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Solution Overview
Problem
Conventional electronics generate significant electronic waste due to their non-degradable materials, leading to environmental pollution and health hazards, as they are designed for longevity rather than temporal use.
Innovation Solution
Development of transient electronic devices using degradable materials and substrates that can transform physically, chemically, or electrically in response to stimuli, enabling controlled degradation and reducing waste through programmable transience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional non-degradable materials are used in PCBs to ensure long-term reliability and durability, then device reliability and service life are improved, but environmental pollution and electronic waste increase significantly
Solution Approach 1:
The patent changes the temporal parameter of material stability from permanent to controlled degradation. By selecting materials with specific half-lives and degradation rates, the PCB transitions from being indefinitely stable to being programmably transient, allowing it to function reliably during its intended lifespan and then degrade harmlessly in the environment.
Solution Approach 2:
The patent introduces dynamic material properties where the PCB's stability is not fixed but can change over time. The materials are designed to maintain structural integrity during operation and then progressively degrade after a predetermined period, transforming the static reliability characteristic into a time-dependent dynamic property.
2Duration of action of stationary object
If PCB materials are designed for long-term durability and chemical stability, then device service life is extended, but degradation time control and environmental compatibility are worsened
Solution Approach 1:
The patent performs preliminary selection and design of materials with predetermined degradation characteristics before the device is manufactured. By pre-selecting materials with specific half-lives and degradation rates, the system enables controlled temporal behavior without requiring active control mechanisms during operation.
Solution Approach 2:
The patent applies the disposable principle to electronic substrates by designing PCBs that are intentionally made to be temporary and biodegradable. After serving their functional purpose, these inexpensive transient PCBs can be safely discarded and naturally degrade, eliminating the need for long-term disposal infrastructure.
3Reliability
If traditional robust PCB materials are used to ensure minimal transmission loss and high frequency performance, then electrical performance is improved, but biodegradability and environmental compatibility are lost
Solution Approach 1:
The patent employs composite material structures combining degradable substrates with conductive materials that also degrade. These composite PCBs integrate multiple functions (structural support, electrical conduction, and controlled degradation) within a single material system, enabling both electrical performance and environmental compatibility.
Solution Approach 2:
The patent changes the temporal parameter of material stability from permanent to controlled degradation. By selecting materials with specific half-lives and degradation rates, the PCB transitions from being indefinitely stable to being programmably transient, allowing it to function reliably during its intended lifespan and then degrade harmlessly in the environment.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables the creation of devices that can dissolve or transform at predetermined times, addressing environmental concerns and reducing electronic waste by providing biodegradable solutions for applications like medical implants and environmental monitoring.
Implementation Method 1
The substrate may be a biodegradable polymer that degrades through hydrolysis
Data Source
AI summary
The invention provides transient printed circuit board devices, including active and passive devices that electrically and/or physically transform upon application of at least one internal and/or external stimulus.