UV-Blocking Polymer Encapsulation for Outdoor Display Modules
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display modules with surface-mount light-emitting elements face challenges in sealing and protection from ultraviolet radiation, which can lead to degradation of solder materials and affect the longevity and performance of outdoor video displays.
Innovation Solution
A display module design featuring a polymer encapsulating member that covers the circuit board and light-emitting elements, incorporating an ultraviolet-radiation diminishing component to filter and block UV radiation, while also forming a lens to enhance optical performance and provide sealing against environmental factors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display module is exposed to the surrounding environment for outdoor use, then the display can be used in outdoor environments, but the light-emitting elements and circuit board are susceptible to ultraviolet radiation degradation and environmental damage
Solution Approach 1:
The patent introduces an ultraviolet-radiation diminishing component as an intermediary element positioned between the harmful UV radiation and the light-emitting elements/circuit board. This component selectively absorbs or blocks ultraviolet radiation while allowing visible light to pass through, thereby protecting the internal components from degradation without interfering with the display's optical performance or outdoor usability.
Solution Approach 2:
The patent converts the harmful ultraviolet radiation into a beneficial protective mechanism by incorporating materials that absorb UV radiation and convert it into harmless forms of energy (such as heat or lower-energy light). This transforms the previously harmful environmental factor into a protective feature that extends the lifespan of the display module.
2Reliability
If a sealing structure is added to protect the circuit board and light-emitting elements, then protection from environmental factors is improved, but the structural complexity and manufacturing difficulty increase
Solution Approach 1:
The ultraviolet-radiation diminishing component is designed to perform multiple functions simultaneously: it provides UV radiation protection, acts as a sealing element to prevent environmental contamination, and maintains optical transparency for display performance. By combining these functions into a single component, the patent reduces structural complexity while improving reliability.
Solution Approach 2:
The patent merges the UV protection function with the sealing and encapsulation functions into a single integrated component. Rather than adding separate protective layers and sealing structures, the design combines these protective functions into one multifunctional element that simplifies the overall structure and manufacturing process.
3Object-affected harmful factors
If the ultraviolet-radiation diminishing component is incorporated into the polymer encapsulating member, then UV protection is enhanced, but the manufacturing process becomes more complex
Solution Approach 1:
The patent incorporates ultraviolet-radiation diminishing components directly into the polymer encapsulating member by combining UV-absorbing materials with the polymer matrix during manufacturing. This creates a composite material that inherently provides UV protection without requiring separate application steps or additional components, thereby enhancing UV blocking while maintaining manufacturing simplicity.
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 seals the display module, protects it from ultraviolet degradation, and enhances optical performance by filtering UV radiation, thereby extending the lifespan and maintaining accurate color representation in outdoor environments.
Implementation Method 1
An ultraviolet-radiation diminishing component can be incorporated into the polymer encapsulating member or on one or more of the circuit board or at least a portion of each of the light-emitting elements, so that the ultraviolet-radiation diminishing component filters, blocks, or reflects more ultraviolet radiation
Implementation Method 2
The polymer encapsulating member seals the portion of the face of the circuit board and the portion of each light-emitting element to which it is adhered, for example by sealing the circuit board and electronics mounted thereto from the surrounding environment
Data Source
AI summary
A display module comprises a circuit board having a front face, a plurality of light-emitting elements electrically coupled to the front face of the circuit board, a polymer encapsulating member adhered to the front face of the circuit board, the polymer encapsulating member substantially covering at least a portion of the circuit board and a portion of the plurality of light-emitting elements, the polymer encapsulating member substantially sealing the portion of the circuit board and the portion of the plurality of light-emitting elements, and an ultraviolet-radiation diminishing component in the polymer encapsulating member or on one or more of at least a portion of the circuit board or at least a portion of each of the light-emitting elements, wherein the ultraviolet-radiation diminishing component filters, blocks, or reflects more ultraviolet radiation than would be filtered, blocked, or reflected by the polymer encapsulating member without the ultraviolet-radiation diminishing component.