Droplet Control via Display Substrate Integration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing microfluidic devices have complex structures, high production costs, and require improved droplet control accuracy.
Innovation Solution
A droplet control and detection device comprising a light source, electrodes, a photoelectric detection structure, and a processing circuit that uses an electric field to move and monitor droplets, with optional hydrophobic layers and insulation for precise control, integrated into a display substrate to reduce production costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional microfluidic device structures are used, then droplet manipulation can be achieved, but the device structure becomes complicated and production cost increases
Solution Approach 1:
The patent combines the microfluidic device structure with a display substrate, merging two separate functions (droplet manipulation and display) into a single integrated platform. This integration eliminates the need for separate complex microfluidic device fabrication, thereby reducing overall production costs and simplifying the device structure while maintaining droplet manipulation capabilities through the display substrate's electrode and hydrophobic layer configurations
Solution Approach 2:
The display substrate is designed to serve multiple functions: it acts as both a display device and a microfluidic device for droplet generation, manipulation, and detection. The electrode structures and hydrophobic layers on the display substrate enable droplet control, while the display functionality is preserved, creating a universal platform that reduces the need for separate dedicated microfluidic devices
2Manufacturing precision
If conventional microfluidic devices are used, then droplet manipulation is possible, but droplet control accuracy needs improvement
Solution Approach 1:
The patent implements local quality by creating specific hydrophobic regions at defined positions on the display substrate. These localized hydrophobic areas enable precise droplet generation, positioning, and manipulation at specific locations without requiring complex overall device structures. The electrode patterns are also locally optimized to provide targeted electric fields for accurate droplet control at specific regions
3Measurement precision
If simple device structures are used, then production cost is reduced, but droplet detection capability is insufficient
Solution Approach 1:
The patent integrates droplet detection functionality directly into the display substrate by utilizing the display's light-emitting and light-detecting capabilities. The display substrate can emit light to illuminate droplets and detect light changes caused by droplet presence, position, and properties. This merging of detection functions with the display structure enables accurate droplet detection without adding separate complex detection device components
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
Enables efficient and accurate droplet control and detection, reducing production costs and improving fabrication accuracy by utilizing existing display substrate manufacturing processes.
Implementation Method 1
a photoelectric detection structure configured to detect light emitted by the light source and reflected by the droplet
Implementation Method 2
a droplet arranged on a light-exiting side of the light source, where the droplet is movable under the effect of an electric field formed between the first electrode and the second electrode
Data Source
AI summary
A droplet control and detection device and an operating method thereof are provided. The droplet control and detection device includes: a light source; a first electrode; a second electrode; a droplet arranged on a light-exiting side of the light source, where the droplet is movable under the effect of an electric field formed between the first electrode and the second electrode; a photoelectric detection structure configured to detect light emitted by the light source and reflected by the droplet; and a processing circuit configured to obtain droplet information according to a detection result of the photoelectric detection structure and control an electrical signal applied on the first electrode and the second electrode according to the droplet information.