UV Sterilization Display Panel with TiO2 Film and Proximity Control
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Solution Overview
Problem
Current disinfection methods for touch-control flat panel displays, such as spraying ethyl alcohol, can damage infrared sensors and do not immediately eliminate pathogens, allowing for the transmission of bacteria, viruses, and other pathogens between users.
Innovation Solution
An ultraviolet sterilization display device with a titanium dioxide thin film and UV light emitting diodes, integrated with a proximity sensor and control chip, automatically initiates UV sterilization when the device is not in use, ensuring safety by cutting off UV light emission when a user approaches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ethyl alcohol or sterilization sprays are used to disinfect the touch-control surface, then the disinfection function is achieved, but the infrared light-emitting diodes are damaged due to oxidation of silver stents
Solution Approach 1:
The patent extracts the disinfection function from the touch-control display surface by adding a separate sterilization panel with UV-LEDs. This allows disinfection to be performed without contacting the infrared sensors, thus avoiding the oxidation damage caused by alcohol-based sprays while maintaining effective pathogen elimination.
Solution Approach 2:
The sterilization panel acts as an intermediary device that performs disinfection through UV radiation rather than chemical sprays. This mediator approach eliminates the need for direct application of alcohol near the infrared sensors, preventing damage while achieving the same disinfection goal.
2Reliability
If manual alcohol disinfection is performed at regular intervals, then some disinfection is achieved, but pathogens can spread during the time between sterilization processes
Solution Approach 1:
The system implements periodic UV sterilization cycles automatically triggered by sensors detecting user presence or absence. This ensures disinfection occurs at optimal intervals without requiring manual intervention, eliminating pathogens continuously rather than relying on infrequent manual spraying.
Solution Approach 2:
The display device performs self-disinfection through integrated UV-LEDs and control circuits that automatically initiate sterilization cycles. The system monitors its own usage state and triggers disinfection without external intervention, reducing the time gap between sterilization events and eliminating the need for manual alcohol application.
3Productivity
If UV light emitting diodes are used for sterilization, then immediate pathogen elimination is achieved, but safety risks arise if UV light exposes users during operation
Solution Approach 1:
The system uses proximity sensors and touch detection circuits to monitor user presence in real-time. When a user approaches or touches the display, the control circuit receives feedback signals and immediately stops UV-LED emission, preventing exposure while maintaining rapid sterilization capability when the device is unused.
Solution Approach 2:
The UV sterilization system dynamically adjusts its operation based on real-time conditions. UV-LEDs are activated only when the display is in an unused state and deactivated immediately upon detecting user presence. This dynamic control enables fast sterilization when safe while preventing harmful exposure during active use.
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
Effectively sterilizes pathogens on the surface without damaging the display device's components, ensuring user safety and reducing the transmission of diseases between users.
Implementation Method 1
a titanium dioxide thin film is adhered to the inner surface of the sterilization panel
Implementation Method 2
the light emitting diode module includes a plurality of ultraviolet (UV) light emitting diodes
Implementation Method 3
generate a signal to activate the ultraviolet light emitting diode to emit ultraviolet lights for a period of time
Implementation Method 4
the end surface and the side surfaces includes a reflecting layer
Data Source
AI summary
An ultraviolet sterilization display device includes a sterilization panel, a titanium dioxide thin film, and a light emitting diode module. The sterilization panel includes an inner surface, an outer surface and a light incident surface. The titanium dioxide thin film is formed on the inner surface of the sterilization panel. The light emitting diode module is aligned with the light incident surface of the sterilization panel, and the light emitting diode module includes a plurality of ultraviolet light emitting diodes. In addition, a sterilization process of an ultraviolet sterilization display device is also disclosed herein.