UV-Sterilizing Display Screen Layout for Public Touch Hygiene
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Solution Overview
Problem
Touch interaction screens in public places are prone to contamination with viruses and bacteria, posing health risks, especially for vulnerable individuals, due to their complex surfaces and frequent use.
Innovation Solution
A display device incorporating a back plate, display panel, optical film, and dual light-emitting units, where one unit emits visible light and the other emits ultraviolet light to disinfect the surface, reducing the need for manual cleaning and enhancing hygiene.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual cleaning and disinfection is performed frequently, then hygiene is improved, but labor costs and operational complexity increase
Solution Approach 1:
The display device incorporates a UV light emitting unit that automatically disinfects the display screen surface without requiring manual intervention. The system performs self-disinfection by generating ultraviolet light that kills bacteria and viruses on the screen, eliminating the need for frequent manual cleaning and reducing maintenance complexity while maintaining high hygiene standards
Solution Approach 2:
The patent replaces the mechanical cleaning process (manual wiping with cloths or sprays) with a photonic disinfection system using UV light. This substitution eliminates the need for physical cleaning materials and manual labor, reducing operational complexity while effectively maintaining hygiene through automatic ultraviolet irradiation
2Strength
If a transparent cover plate is added to protect the display screen, then durability is improved, but the surface becomes more prone to contamination
Solution Approach 1:
The display device uses an integrated UV disinfection system that automatically cleans the transparent cover plate surface. The UV light emitting unit is positioned to irradiate the outer surface of the cover plate, enabling self-cleaning functionality that removes contaminants without requiring manual intervention, thus maintaining both durability and hygiene
Solution Approach 2:
The system performs preliminary disinfection by continuously or periodically irradiating the transparent cover plate with UV light before contaminants can accumulate significantly. This preventive approach maintains the surface hygiene proactively, reducing the need for reactive cleaning while preserving the protective function of the cover plate
3Ease of manufacture
If the display device structure is simplified, then manufacturing cost is reduced, but disinfection functionality may be compromised
Solution Approach 1:
The UV light emitting unit serves multiple functions: it disinfects the display screen surface, sterilizes the air around the device, and can potentially serve as an indicator light. This multi-functionality allows the addition of disinfection capability without proportionally increasing structural complexity or manufacturing cost, as the same component performs multiple protective roles
Solution Approach 2:
The patent integrates the UV disinfection function into the existing display device structure by positioning the light emitting unit within the back plate or frame structure. This merging approach combines the disinfection functionality with the structural components, avoiding the need for separate discrete systems and reducing overall manufacturing complexity while maintaining effective disinfection capability
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 display device effectively disinfects the surface using ultraviolet light, improving hygiene and reducing health risks by eliminating microorganisms, while also reducing costs and complexity in maintenance.
Implementation Method 1
The second light-emitting unit is configured to emit ultraviolet light. A part of the ultraviolet light emitted by the second light-emitting unit avoids the display screen and is emitted onto the transparent cover plate, and another part of the ultraviolet light emitted by the second light-emitting unit is emitted onto the transparent cover plate via the display screen, to clean the display panel.
Implementation Method 2
The first light-emitting unit is configured to emit visible light. The visible light emitted by the first light-emitting unit is incident on the display panel via the optical film.
Data Source
AI summary
A display device and an electronic device are provided. The display device includes a back plate, a display panel, an optical film, a first light-emitting unit, and a second light-emitting unit. The display panel and the second light-emitting unit are carried on the back plate. The optical film and the first light-emitting unit located on one side of the optical film away from the display panel are accommodated in an accommodating cavity cooperatively defined by the display panel and the back plate. The visible light emitted by the first light-emitting unit is incident on the display panel via the optical film. A part of the ultraviolet light emitted by the second light-emitting unit avoids the display screen and is emitted onto the transparent cover plate, and another part of the ultraviolet light is emitted onto the transparent cover plate via the display screen, to clean the display panel.