UV Disinfection Assembly in Display Module Backlight
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Touch screens, particularly public ones, are prone to harboring viruses and bacteria due to frequent user interaction, posing health risks, especially for individuals with weakened immune systems.
Innovation Solution
A display module incorporating a disinfection assembly that emits UV rays through a light-guide member and back plate, allowing for self-disinfection and self-sterilization of the display panel, breaking the need for manual cleaning and reducing manpower and resource costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual cleaning is used for touch screens, then cleaning effectiveness is maintained, but labor costs and resource consumption increase
Solution Approach 1:
The touch screen system performs self-disinfection by integrating a UV lamp that automatically activates to emit ultraviolet light, killing bacteria and viruses on the screen surface without requiring external cleaning intervention. This self-service mechanism eliminates manual cleaning labor and associated resource consumption while maintaining continuous hygiene effectiveness.
Solution Approach 2:
The patent replaces mechanical cleaning methods (manual wiping with cloths or sprays) with a photobiological disinfection system using UV-C light. This substitution eliminates the need for physical cleaning materials and human intervention, reducing both manpower requirements and consumable resources while achieving superior disinfection effectiveness.
2Reliability
If UV disinfection is integrated into the display module, then disinfection effectiveness is improved, but device complexity increases
Solution Approach 1:
The UV disinfection lamp is integrated directly into the display module structure, merging the disinfection function with the existing display components. The UV lamp is positioned behind the display screen, allowing it to emit ultraviolet light through the screen surface without requiring separate external disinfection equipment, thereby maintaining structural simplicity while achieving effective disinfection.
Solution Approach 2:
The display module is designed to serve dual functions: normal display operation and UV disinfection. The same structural components (housing, power supply, control circuitry) support both functions, eliminating the need for separate dedicated disinfection equipment and reducing overall system complexity despite adding disinfection capability.
3Reliability
If UV rays are emitted through the light-guide member, then disinfection coverage is improved, but light transmission efficiency may be affected
Solution Approach 1:
The light-guide member is designed with differentiated optical properties for different wavelength ranges. It is engineered to be transparent to UV-C wavelengths (253.7nm) for effective disinfection while maintaining its normal light-guiding function for visible light. This local quality optimization allows UV rays to pass through effectively without compromising the light transmission efficiency needed for display brightness.
Solution Approach 2:
The light-guide member acts as an intermediary structure that facilitates both visible light transmission and UV ray passage. By strategically positioning the UV lamp and designing the light-guide geometry, the system enables UV-C radiation to reach the screen surface through the light-guide without significantly impeding the visible light transmission path, thus maintaining both disinfection coverage and display quality.
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 UV disinfection module efficiently disinfects the display panel and surrounding air, ensuring user health while being cost-effective and easy to maintain, with the ability to disinfect within 10-20 minutes.
Implementation Method 1
The backlight module includes a light-emitting member, a light-guide member, and a back plate. The light-emitting member is configured to emit visible light.
Implementation Method 2
The light-guide member is disposed adjacent to the light-emitting member and configured to guide the visible light emitted by the light-emitting member to the display panel.
Implementation Method 3
The disinfection assembly is configured to emit ultraviolet (UV) rays, the UV rays irradiate the display panel via the through-holes and the light-guide member
Data Source
AI summary
Provided are a display module and an electronic device. The display module includes a display panel and a backlight module stacked with the display panel. The backlight module includes a light-emitting member, a light-guide member, and a back plate. The light-emitting member is configured to emit visible light. The light-guide member is disposed adjacent to the light-emitting member and configured to guide the visible light to the display panel. The back plate is configured to accommodate the light-emitting member and the light-guide member and defines a through-hole. The display module further includes a disinfection assembly. The disinfection assembly is at least partially accommodated in the through-hole or disposed at one side of the back plate away from the display panel, the disinfection assembly is configured to emit UV rays, the UV rays irradiate the display panel via the through-hole, and the disinfection assembly is detachably connected to the back plate.