Deformation Sensing Unit for Flexible Display Panels
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Solution Overview
Problem
Existing deformation schemes for display panels, which rely on external sensors, face issues of low reliability and high production costs due to sensor damage and the need for additional production equipment.
Innovation Solution
Integration of a deformation sensing unit within the display panel, utilizing a substrate with multiple electrodes forming capacitors to determine the shape-state by detecting changes in capacitance values, allowing for simultaneous image display and deformation sensing without external sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If external bending sensors are arranged on the display panel to monitor force applied to the screen, then deformation sensing capability is achieved, but reliability decreases due to sensor damage and production costs increase due to additional production equipment
Solution Approach 1:
The deformation sensing unit is merged with the display panel structure by integrating multiple electrodes (first electrode on the same layer as source and drain electrodes, second and third electrodes on a dielectric layer) that form capacitors. This integration eliminates the need for separate external sensors, thereby improving reliability by removing vulnerable external components and reducing production costs by utilizing existing display panel manufacturing processes and equipment.
2Adaptability or versatility
If external bending sensors are used to monitor screen deformation, then deformation detection is enabled, but device complexity increases due to additional components
Solution Approach 1:
The electrodes in the display panel serve dual functions: they are part of the display structure (source and drain electrodes) and simultaneously form capacitors for deformation sensing (first, second, and third electrodes creating first, second, and third capacitors). This multi-functionality enables deformation detection without adding separate sensor systems, maintaining device simplicity while enhancing interaction capabilities through shape-state detection.
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
This solution enhances the reliability and reduces production costs by eliminating external sensor damage and allowing for the determination of various shape-states, including bending and compression, while maintaining a simple structure and wide application prospects.
Implementation Method 1
the second electrode and the third electrode are configured to form a first capacitor, the first electrode and the second electrode are configured to form a second capacitor, the first electrode and the third electrode are configured to form a third capacitor, and the first capacitor, the second capacitor, and the third capacitor are configured to determine a shape-state of the display panel
Data Source
AI summary
A display panel and deformation sensing method thereof, and a display device are provided. The display panel includes a substrate, and a deformation sensing unit on the substrate; the deformation sensing unit includes a first electrode, a second electrode, and a third electrode, the second electrode and the third electrode being configured to form a first capacitor, the first electrode and the second electrode being configured to form a second capacitor, the first electrode and the third electrode being configured to form a third capacitor, and the first capacitor, the second capacitor, and the third capacitor being configured to determine a shape-state of the display panel.