Flexible Touch Display Electrode Symmetry for Bending Detection
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Solution Overview
Problem
Flexible touch display panels in foldable smartphones face interference between touch sub-regions when folded, preventing the panel from entering hibernation mode due to lack of sensing mechanisms to determine bending status.
Innovation Solution
A touch display apparatus with a flexible touch display panel, a first transmission electrode, and a first reception electrode symmetrically arranged on either side of a bending line, allowing the reception electrode to receive a signal from the transmission electrode when the panel is bent, enabling determination of the display mode based on signal reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the flexible touch display panel is folded to achieve slimness and light weight, then adaptability to foldable smartphones is improved, but interference between touch sub-regions occurs preventing hibernation mode
Solution Approach 1:
The display panel is divided into multiple sub-regions (first sub-region and second sub-region) with distinct transmission and reception electrodes arranged in specific patterns. This segmentation allows independent control and detection of each sub-region's state, enabling the system to identify when sub-regions are interfering with each other during folding, thus resolving the contradiction between foldable adaptability and hibernation mode reliability.
2Measurement precision
If transmission and reception electrodes are arranged to detect bending status, then sensing capability is improved, but device complexity increases
Solution Approach 1:
The transmission and reception electrodes serve dual functions: they act as touch sensing elements for normal touch operation and simultaneously function as bending detection sensors. By utilizing the same electrode structure for both touch sensing and bending status detection, the patent achieves improved measurement precision without proportionally increasing device complexity.
Solution Approach 2:
The electrode arrangement automatically detects bending status through signal transmission and reception between symmetrically positioned electrodes. When the panel bends, the change in signal reception is self-detected by the electrode system itself without requiring additional external sensors or complex detection mechanisms, thus improving sensing capability while minimizing added 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 sensing of the bending status of the flexible touch display panel, allowing for appropriate display mode switching, including hibernation mode, by using the symmetrically arranged electrodes to transmit and receive signals, thus preventing interference and optimizing functionality.
Implementation Method 1
the first transmission electrode and the first reception electrode are symmetrically located on two sides of the first bending line, respectively, such that the first reception electrode can receive a signal transmitted from the first transmission electrode when the flexible touch display panel is bent along the first bending line
Data Source
AI summary
A touch display apparatus and an operation method of the touch display apparatus are provided. The touch display apparatus includes a flexible touch display panel, a transmission electrode, and a reception electrode. The flexible touch display panel is bendable along a bending line. The transmission electrode and the reception electrode are arranged in the flexible touch display panel. The transmission electrode and the reception electrode are symmetrically located on two sides of the bending line, respectively, so that the reception electrode can receive a signal transmitted from the transmission electrode when the flexible touch display panel is bent along the bending line. The display mode of the flexible touch display panel is determined according to whether the reception electrode receives the signal transmitted from the transmission electrode.