Laser-Induced Graphene Sterilization Structure for Display Devices
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Solution Overview
Problem
Display devices are susceptible to contamination and erosion by external bacteria, which affects their performance and is not favorable for multi-functional displays.
Innovation Solution
A sterilization structure incorporating a laser-induced graphene material active layer with exposed regions, electrically connected source and drain electrode layers, and a gate electrode, which punctures bacterial cell membranes and generates electric charges for sterilization, combined with a substrate and gate insulating layer to form a thin film transistor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If display devices are exposed to external environment for multi-functional use, then versatility is improved, but bacterial contamination and erosion occur
Solution Approach 1:
The patent utilizes the harmful electrical charges generated by laser irradiation on graphene material to achieve beneficial sterilization effects. The laser-induced electric charges puncture bacterial cell membranes and generate reactive oxygen species, converting the potentially harmful laser energy into a protective sterilization mechanism that prevents bacterial contamination on display surfaces.
Solution Approach 2:
The patent employs graphene material as an active layer in the display device structure. Graphene's unique properties include high electrical conductivity, mechanical strength, and when irradiated by laser, generates electric charges that provide sterilization functionality. This composite material approach integrates both display functionality and bacterial protection within the same device structure.
2Reliability
If laser-induced graphene material is used for sterilization, then sterilization effectiveness is improved, but device complexity increases
Solution Approach 1:
The graphene material serves multiple functions within the device: it acts as an active layer for display functionality, provides structural integrity, and when combined with laser irradiation, generates electric charges for sterilization. This multi-functionality reduces the need for separate sterilization components, thereby limiting the increase in device complexity while maintaining high sterilization effectiveness.
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 prevents bacterial aggregation and achieves sterilization by puncturing bacterial cell membranes and generating electric charges, enhancing the cleanliness and functionality of display devices.
Implementation Method 1
the active layer has a thickness ranging from 20 microns to 25 microns... a material of the active layer includes a laser-induced graphene material... punctures bacterial cell membranes and generates electric charges for sterilization
Data Source
AI summary
A sterilization structure, a sterilization board, and a display device are disclosed. The sterilization structure includes an active layer, wherein, one surface of the active layer has an exposed region, and a material of the active layer includes a laser-induced graphene material.