Selective Polymer Coating for Electronic Device Water Resistance
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Solution Overview
Problem
Existing water resistance technologies for electronic devices provide only single nano-coatings and methods, failing to adequately protect devices from multiple contaminants and harsh environments, especially liquids, as they corrode electrically conductive and insulating components.
Innovation Solution
Applying a combination of different polymeric materials, such as acrylic-based and silicone-based polymers, to various components of electronic devices, including printed circuit boards, to create a multilayer hydrophobic coating that enhances water resistance and anti-corrosion properties without interfering with the device's functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a single nano-coating is applied to electronic device components, then the application process is simple, but the protection against multiple contaminants and liquids is insufficient
Solution Approach 1:
The patent applies a composite coating system consisting of a first polymer coating (e.g., acrylic-based) and a second polymer coating (e.g., silicone-based) with different chemistries and properties. The first coating provides initial protection and surface preparation, while the second coating enhances water resistance and contaminant protection. This multi-layer composite approach resolves the contradiction by combining multiple materials to achieve superior protection while maintaining a relatively simple sequential application process.
Solution Approach 2:
The coating process is segmented into multiple distinct stages: applying the first polymer coating, curing it, then applying the second polymer coating. Each layer serves a specific protective function, with the first layer providing base protection and the second layer providing enhanced water resistance. This segmentation allows each coating to be optimized for its specific purpose while maintaining overall process simplicity.
2Reliability
If multiple polymer coatings are applied to different components, then protection against liquids and contaminants is enhanced, but the manufacturing process complexity increases
Solution Approach 1:
The patent applies different polymer coatings to different components based on their specific requirements. For example, connectors may receive one type of coating while cameras and other sensitive components receive different coatings optimized for their specific protection needs. This local quality approach enhances water resistance where most needed while avoiding unnecessary complexity in areas with lower requirements.
Solution Approach 2:
The patent utilizes polymers with different hardness values and chemical properties - the first polymer has greater hardness than the second polymer. This parameter variation allows optimization of each layer's properties for its specific function while maintaining a systematic application process that manages complexity through standardized procedures.
3Strength
If a hard polymer coating is applied first, then surface protection is improved, but the curing time increases
Solution Approach 1:
The first hard polymer coating is applied and cured before applying the second softer polymer coating. This preliminary action of applying the hard coating first establishes a durable base layer that can be cured independently, allowing the subsequent softer coating to be applied without compromising the underlying hard surface. The curing processes are sequential rather than simultaneous, managing time loss through structured progression.
Solution Approach 2:
The composite coating system uses a hard first polymer (e.g., acrylic-based) and a softer second polymer (e.g., silicone-based) with complementary properties. The hard outer layer provides surface protection and durability, while the softer inner layer provides flexibility and enhanced water resistance. This material combination resolves the contradiction by distributing functions across layers with different hardness characteristics.
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
The multilayer hydrophobic coating significantly increases water resistance by at least one order of magnitude, providing prolonged protection against liquids and contaminants while maintaining the device's operational integrity, with the polymers exhibiting hydrophobic and anti-corrosion properties without affecting conductivity.
Implementation Method 1
applying different polymeric materials on the vital components of the device... create a multilayer hydrophobic coating that enhances water resistance
Implementation Method 2
Exposure to liquids like water, will often lead to corrosion of these components that will eventually destroy the function of the electronic device
Data Source
AI summary
Methods for protecting an electronic device from contaminants by applying different polymeric materials to different vital components of a device are disclosed. In one embodiment, the method comprises applying a first polymer, such as an acrylic-based polymer, to one or more connectors and components located on the printed circuit board of the device. The method further comprises applying a second polymer, such as a silicone-based polymer, to different connectors and components on the printed circuit board. The method leads to different components being coated with a different polymers, without the need for multilayer coatings on any component. Electronic devices that are protected by such polymeric, hydrophobic coatings are also disclosed. Non-limiting examples of such devices include smart phones, computers, and gaming devices.