Waterproof LED Module with Segmented Adhesive Layer
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Solution Overview
Problem
Existing light-emitting modules lack waterproof structures, making them vulnerable to moisture-induced damage such as circuit shorts or corrosion.
Innovation Solution
A waterproof light emitting diode device and module are designed with a waterproof layer covering the light emitting diode's contacts and non-light emitting surfaces, using adhesives, single-sided and double-sided adhesive tapes, and substrates to prevent moisture exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a waterproof layer is added to cover the light emitting diode, then waterproof property is improved, but device complexity increases
Solution Approach 1:
The waterproof layer is divided into multiple segments including adhesive portions, substrate portions, and adhesive tapes positioned at different locations. Each segment performs a specific waterproof function, allowing the overall system to achieve comprehensive protection while maintaining modularity and reducing complexity through functional division.
Solution Approach 2:
The waterproof layer employs composite material structure combining adhesive materials, substrate materials (such as flexible printed circuit boards or rigid substrates), and adhesive tapes. This composite approach integrates multiple material properties to achieve effective waterproofing while distributing structural complexity across different material layers.
2Reliability
If the waterproof layer covers the light emitting surface, then waterproof property is improved, but light emission is affected
Solution Approach 1:
The waterproof layer exhibits spatially varying properties: the adhesive portions and substrate portions provide waterproof protection, while the adhesive tape portions are positioned to maintain light transmission. This local differentiation allows different regions of the waterproof layer to serve different functions - protection versus light transmission - resolving the contradiction between waterproofing and light emission.
Solution Approach 2:
The adhesive tape acts as an intermediary element between the waterproof substrate and the light emitting surface. It provides the necessary adhesive bonding for waterproofing while its specific material properties and positioning allow light to pass through, mediating between the conflicting requirements of waterproof protection and light transmission.
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 solution effectively prevents damage from moisture, ensuring the light emitting diodes remain functional while maintaining their light emitting characteristics without compromising the waterproof integrity.
Implementation Method 1
the substrate is fixed on the light guide plate through the double-sided adhesive tape
Data Source
AI summary
A waterproof light emitting module is provided. The waterproof light emitting module comprises a circuit board, a light emitting diode, a light guide plate, and a waterproof layer. The light emitting diode is over the circuit board, and having a light emitting surface, a first non-light emitting surface and a second non-light emitting surface. The light guide plate is adjacent to the light emitting surface of the light emitting diode. The waterproof layer covers the first non-light emitting surface and the second non-light emitting surface of the light emitting diode. The waterproof layer includes an adhesive, a substrate, a recessed portion of the light guide plate, a portion of the circuit board or a combination thereof. A display device including the waterproof light emitting module is also provided herein.