Flexible Display Bending Sensing via Mutual Inductance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Flexible display devices lack an effective method for sensing bending, which is essential for maintaining image quality and user interface functionality, especially when the device is modified into 3D shapes or folded.
Innovation Solution
A method and apparatus that utilize conductive units with lower and upper electrode layers, connected through an insulation layer, to sense bending by detecting changes in magnetic flux induced between these units, allowing for real-time bending detection and control of the display device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If flexible display devices are modified into 3D shapes or folded, then adaptability and versatility are improved, but image quality and display performance deteriorate due to bending distortion
Solution Approach 1:
The patent applies preliminary action by pre-installing bending sensors and control circuits into the flexible display device before the device is put into use. These sensors continuously monitor bending degrees and directions, and the control circuits are pre-configured to receive sensor signals and automatically adjust display parameters. This advance preparation enables real-time compensation for image distortion caused by bending, maintaining image quality while allowing 3D shape modifications.
Solution Approach 2:
The patent implements feedback by creating a closed-loop control system where bending sensors continuously detect the actual bending state of the display device, transmit this information to control circuits, and the control circuits adjust display parameters based on the detected bending data. This real-time feedback mechanism allows the system to dynamically compensate for distortion and maintain optimal image quality regardless of the device's 3D configuration.
2Measurement precision
If bending sensors are added to flexible display devices, then measurement precision of bending is improved, but device complexity increases
Solution Approach 1:
The patent applies merging by integrating bending sensors and control circuits directly into the existing flexible display device structure. The sensors are embedded within the display layers, and the control circuits are incorporated into the device's existing circuit board or flexible printed circuit. This consolidation approach enables accurate bending measurement while minimizing additional structural complexity, as the sensing and control functions are merged with the display device's existing components.
Solution Approach 2:
The patent implements universality by designing the bending sensor system to serve multiple functions: detecting bending degree, determining bending direction, and providing data for image distortion compensation. The same sensor array and control circuitry that measure bending parameters are also used to adjust display settings in real-time. This multi-functional approach reduces overall device complexity by using a single integrated system rather than separate components for each function.
3Manufacturing precision
If real-time bending detection is implemented, then image distortion compensation is improved, but use of energy increases due to continuous sensing and control
Solution Approach 1:
The patent applies periodic action by implementing intermittent bending detection and compensation cycles rather than continuous operation. The bending sensors periodically sample the display device's bending state at optimized intervals, and the control circuits process sensor data and adjust display parameters in periodic cycles. This periodic operation reduces power consumption compared to continuous sensing and adjustment, while still maintaining effective real-time compensation for image distortion during active bending events.
Solution Approach 2:
The patent implements parameter changes by dynamically adjusting display parameters such as pixel arrangement, image scaling, and refresh rates based on detected bending conditions. The control circuits modify these display parameters in real-time according to the bending degree and direction, optimizing image quality for the current 3D configuration. By changing display parameters rather than physically reconfiguring hardware, the system achieves effective distortion compensation with minimal additional energy consumption.
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 accurate sensing of bending degrees and directions, allowing for image distortion compensation and enhanced user interface capabilities in flexible and 3D display configurations.
Implementation Method 1
Method and apparatus for sensing bending of flexible display device using mutual inductance
Data Source
AI summary
A method of manufacturing a flexible display device for sensing bending that includes forming a lower electrode layer, which includes a plurality of lower electrodes spaced apart from each other on a substrate, forming an insulation layer on the lower electrode layer, forming holes in the insulation layer to expose at least a part of each of the plurality of lower electrodes, and forming an upper electrode layer, which includes a plurality of upper electrodes that are spaced apart from each other on the insulation layer and that fill the holes in the insulation layer. At least two conductive units including the lower electrode layer, the insulation layer, and the upper electrode layer are formed to face each other on a substrate of a non-display unit that is arranged near a boundary of the display device.