Flexible Display Bending Sensing via Capacitance Change
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display devices lack effective methods to sense and utilize bending manipulation as a user input mechanism, particularly in flexible display devices, which limits the diversity and ease of user interaction.
Innovation Solution
Incorporating a bending sensing unit that utilizes changes in capacitance between electrodes to detect panel bending, allowing for easy user manipulation inputs without requiring additional processing steps, by leveraging the same electrodes used for touch sensing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a flexible display device uses plastic substrate to enable bending, then the device becomes foldable and adaptable to user manipulation, but the device lacks effective methods to sense and utilize bending manipulation as user input
Solution Approach 1:
The existing touch sensing electrodes are made to serve dual functions: traditional touch sensing and bending manipulation sensing. By analyzing capacitance changes between electrodes, the system can distinguish between finger touches and bending actions, allowing one component to perform multiple sensing functions without adding separate sensing mechanisms.
Solution Approach 2:
The system detects bending by monitoring changes in capacitance parameters between electrodes. When the flexible display bends, the physical distance and orientation between electrodes change, causing measurable capacitance variations. By tracking these parameter changes, the system translates mechanical deformation into detectable electrical signals for user input recognition.
2Measurement precision
If additional sensors are added to detect bending manipulation, then bending sensing capability is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The touch sensing electrodes are made to serve dual functions: traditional touch sensing and bending manipulation sensing. By analyzing capacitance changes between electrodes, the system can distinguish between finger touches and bending actions, allowing one component to perform multiple sensing functions without adding separate sensing mechanisms.
Solution Approach 2:
The existing electrode structure serves itself by providing both touch and bending sensing capabilities. The same electrodes used for touch detection automatically provide bending detection data through capacitance analysis, eliminating the need for dedicated bending sensors and reducing overall system complexity.
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 easy and diverse user input through bending manipulation recognition, enhancing user interaction with flexible display devices while integrating bending sensing without adding new processes or electrodes.
Implementation Method 1
a bending sensing unit that senses a bending of the panel by using a change in a capacitance between at least two electrodes among the plurality of electrodes
Data Source
AI summary
The present invention relates to a display device including a panel which includes a plurality of electrodes which are arranged in parallel to each other, and a bending sensing unit that senses a bending of the panel by using a change in a capacitance between at least two electrodes among the plurality of electrodes.