Flexible Capacitive Touch Display Bending Detection
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Solution Overview
Problem
Current capacitive touch display panels lack effective methods to detect bending locations and adapt system modes based on flexible display configurations, limiting their functionality in various application scenarios.
Innovation Solution
A method and apparatus that utilize a grid-shaped capacitive touch display panel with signal lines in a first and second direction, applying drive signals and detecting induction signals to determine bending locations, and activating system modes based on detected bending configurations, including artistic creation, wristband, laptop, and E-book modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a flexible capacitive touch display panel is used to enable bending functionality, then adaptability and versatility are improved, but the ability to detect bending locations and determine system modes automatically is insufficient
Solution Approach 1:
The display panel is divided into multiple signal lines arranged in a grid shape, with drive signal lines and induction signal lines segmented in specific directions. This segmentation enables precise localization of bending positions by detecting changes in induction signals between adjacent signal lines, directly resolving the contradiction between flexibility and bending detection precision.
Solution Approach 2:
The system continuously monitors induction signals from induction signal lines and compares them against threshold values to detect bending events. When bending is detected, the system provides feedback by determining system mode based on the bending location, enabling automatic adaptation to different usage scenarios and improving overall system intelligence.
2Ease of manufacture
If signal lines are arranged in a grid shape with electrical insulation between perpendicular signal lines, then manufacturing complexity is reduced, but the complexity of control and signal transmission increases
Solution Approach 1:
The grid-shaped signal lines are segmented into two orthogonal sets: drive signal lines extending in a first direction and induction signal lines extending in a second direction. This segmentation simplifies manufacturing by allowing independent routing and insulation of each set, while the controlled interaction between segments maintains manageable system complexity.
Solution Approach 2:
Instead of having all signal lines actively driven, the system inverts the approach by using induction signal lines that passively receive signals through capacitive coupling. This inversion reduces the complexity of active control for all lines while maintaining the grid structure's manufacturing advantages.
3Measurement precision
If drive signals are applied to each signal line to detect induction signals, then bending detection precision is improved, but energy consumption increases
Solution Approach 1:
The system applies drive signals selectively to drive signal lines rather than all signal lines simultaneously. By activating only the necessary subset of signal lines for current detection needs, the system maintains high bending detection precision while significantly reducing overall energy consumption compared to full-array activation.
Solution Approach 2:
The drive signals are applied in a periodic or sequential manner across different signal lines rather than continuously to all lines. This periodic activation maintains detection precision by systematically scanning through signal lines while reducing average power consumption through duty cycling.
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 detection of bending locations and automatic system mode determination, enhancing user interaction and functionality in flexible display applications.
Implementation Method 1
a first direction signal line and a second direction signal line are electrically insulated from each other... applying a drive signal to the signal line as a drive signal line, receiving, from a signal line parallel to and adjacent to the drive signal line as an induction signal line, an induction signal
Data Source
AI summary
Embodiments of the present disclosure provide a method for controlling a flexible capacitive touch display panel and a corresponding touch display apparatus. The capacitive touch display panel is provided with a plurality of signal lines arranged in a grid shape, and a signal line extending in a first direction and a signal line extending in a second direction are electrically insulated from each other. In this method, for each of the plurality of signal lines, a drive signal is applied to the signal line as a drive signal line. An induction signal is received from a signal line parallel to and adjacent to the drive signal line as an induction signal line. If an intensity of the induction signal is increased, it is determined that the capacitive touch display panel is bent at a bending location between the drive signal line and the induction signal line.