Foldable Screen Touch Accuracy via Dynamic State Adjustment
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Solution Overview
Problem
Touchable, flexible, and foldable screens have low accuracy in detecting user touch operations due to the curvature of the screen, leading to incorrect finger recognition and palm detection.
Innovation Solution
A method that detects touch operations on a foldable screen in a bent state, adjusts the affected region to a non-bent state for accurate detection, and reverts to the bent state if no touch is detected, using a combination of touch point analysis and pressure values to determine the bent region and adjust the screen state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the foldable screen is bent into a curved surface to enable portability and flexibility, then the device becomes more portable and flexible, but the touch detection accuracy deteriorates due to screen region expansion at concave positions and contraction at convex positions
Solution Approach 1:
The patent applies dynamics by making the screen state adjustable between bent and non-bent configurations. The control unit dynamically changes the screen state based on touch operation detection, allowing the screen to transition from a fixed bent state to a temporarily flattened state for accurate touch detection, then revert to the bent state for portability.
Solution Approach 2:
The patent changes the physical parameter of screen curvature by adjusting the screen from a bent state to a non-bent state during touch operations. This parameter change flattens the screen locally to eliminate the distortion caused by curvature, ensuring accurate touch coordinate detection while maintaining the ability to return to the bent state for portability.
2Ease of operation
If the screen remains in a bent state during touch operations, then portability is maintained, but false touch operations occur due to palm detection errors and incorrect finger recognition
Solution Approach 1:
The system dynamically adjusts the screen state based on the detected touch operation type. When a touch operation is detected, the screen transitions from bent to non-bent state for accurate recognition. After the touch operation completes, the screen returns to the bent state, maintaining portability while ensuring reliable touch recognition during interaction.
Solution Approach 2:
The control unit uses feedback from the touch detection unit to determine whether to change the screen state. If a touch operation is detected, the system feedback triggers the screen to flatten for accurate recognition. After the touch operation ends, the feedback mechanism triggers the screen to return to the bent state, creating a closed-loop control system that balances portability and recognition accuracy.
Data Source
AI summary
A controlling method of a touchable and foldable screen and an electronic device are described. The method includes detecting a first touch operation when the foldable screen is in a bent state; judging whether the first touch operation is located in a bent region on the foldable screen; and adjusting a first bent region on the foldable screen to which the first touch operation is mapped from the bent state to a non-bent state in case that the first touch operation is located in the bent region on the foldable screen.