Flexible Display Bending Status Sensing via Shared Electrode Lines
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Solution Overview
Problem
Flexible displays lack an effective method to sense and interpret bending gestures for gesture-based human-machine interaction, as traditional sensing devices like piezoelectric elements increase thickness, cost, and complexity, compromising reliability and usability.
Innovation Solution
A flexible display device with a bending status sensing module that shares electrode lines with a touch function module, using resistance and capacitance variations to determine bending status and degree, allowing the device to perform corresponding operations without additional sensing devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional sensing devices like piezoelectric elements are used to sense bending gestures, then bending status can be detected, but the thickness, cost, and device complexity increase
Solution Approach 1:
The electrode lines of the touch function module are made to serve dual purposes: both touch sensing and bending status sensing. By configuring the sensing section to share electrode lines with the touch function module, the patent eliminates the need for separate sensing devices, thereby reducing device complexity while maintaining bending detection capability
Solution Approach 2:
The patent extracts the bending sensing function from separate piezoelectric elements and integrates it into the existing touch module electrode lines. This extraction and integration approach removes unnecessary components and simplifies the overall device structure while preserving the essential bending detection function
2Measurement precision
If traditional sensing devices like piezoelectric elements are used to sense bending gestures, then bending status can be detected, but the thickness increases
Solution Approach 1:
The electrode lines of the touch function module are made to serve dual purposes: both touch sensing and bending status sensing. By configuring the sensing section to share electrode lines with the touch function module, the patent eliminates the need for separate sensing devices, thereby reducing device complexity while maintaining bending detection capability
Solution Approach 2:
The patent uses thin film electrode lines that can be integrated into the flexible display structure without adding significant thickness. The electrode lines are configured as thin conductive elements that can detect bending through resistance changes while maintaining the flexible and thin profile of the display device
3Measurement precision
If traditional sensing devices like piezoelectric elements are used to sense bending gestures, then bending status can be detected, but the cost increases
Solution Approach 1:
The electrode lines of the touch function module are made to serve dual purposes: both touch sensing and bending status sensing. By configuring the sensing section to share electrode lines with the touch function module, the patent eliminates the need for separate sensing devices, thereby reducing device complexity while maintaining bending detection capability
Solution Approach 2:
The patent replaces expensive piezoelectric elements with simple, inexpensive electrode lines that can be easily manufactured using standard touch module fabrication processes. This substitution significantly reduces the cost of the flexible display device while maintaining adequate bending detection functionality
4Adaptability or versatility
If separate bending status sensing modules are added, then bending gesture sensing is enabled, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent merges the bending status sensing function with the existing touch function module by having the sensing section share electrode lines with the touch electrodes. This merging approach enables gesture input functionality without adding separate sensing modules, thereby avoiding increased device complexity and manufacturing difficulty
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 lightweight, cost-effective, and reliable gesture input functionality by integrating bending status sensing into the touch function module, enhancing user interaction without increasing thickness or complexity.
Implementation Method 1
the size of the first bending status sensing electrodes increases upon the flexible display device being bent positively and decreases upon the flexible display device being bent negatively
Implementation Method 2
the second bending status sensing electrodes and first bending status sensing electrodes located on both sides thereof generate capacitance accordingly
Data Source
AI summary
A flexible display device and driving method thereof are disclosed. The flexible display device includes: a first substrate and at least one bending status sensing module, the bending status sensing module includes: a driving unit for generating and outputting a driving signal; a sensing section connected with the driving unit and disposed on the first substrate, which is bent as the flexible display device is bent to sense the bending status of the flexible display device under the driving of the driving signal and generate a sensing signal; an analyzing unit connected with the sensing section and configured for obtaining the bending status information of the flexible display device according to the sensing signal to enable the flexible display device to perform an operation corresponding to the obtained bending status information.