Foldable Display Touch Controller Angle Detection
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Solution Overview
Problem
Foldable electronic devices often receive unintended user inputs when being folded or unfolded, leading to unintended function executions and user inconvenience.
Innovation Solution
An electronic device with a foldable housing and a touch controller system that detects changes in the angle between the device's housings, identifies input characteristics, and determines whether to cancel touch events based on these characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the touch screen display is used during folding or unfolding, then user interaction is enabled, but unintended user inputs are received causing function execution errors
Solution Approach 1:
The system performs preliminary detection of folding/unfolding states and pre-identifies touch inputs occurring during these transitions. By detecting the angle change event before processing the touch input, the system can preemptively determine whether to cancel the touch event, preventing unintended function executions before they occur.
Solution Approach 2:
The system continuously monitors the angle between housing structures and provides feedback about the folding/unfolding state to the touch controller. This feedback mechanism enables the system to dynamically adjust touch input processing based on the current structural state, canceling inputs that occur during transitions while allowing inputs during stable states.
2Speed
If touch inputs are processed during angle changes, then user responsiveness is maintained, but function execution errors occur due to unintended inputs
Solution Approach 1:
The system performs preliminary identification of touch inputs that occur during angle change events. By detecting the angle change and identifying associated touch inputs before executing functions, the system can preemptively cancel problematic inputs while maintaining rapid processing of valid inputs, thus preserving response speed for legitimate user actions.
Solution Approach 2:
The system dynamically adjusts touch input processing based on the real-time folding/unfolding state. The touch controller transitions between different operational modes: actively processing inputs during stable states and canceling inputs during transitions. This dynamic adaptation maintains high responsiveness during normal use while preventing errors during structural changes.
3Adaptability or versatility
If the device structure is made foldable to expand display area, then device versatility is improved, but unintended inputs are generated during folding/unfolding
Solution Approach 1:
The system uses angle sensors to continuously monitor the folding/unfolding state and provides feedback to the touch controller. This feedback loop enables the system to identify when the device is in a transitional state and automatically cancel touch inputs occurring during these periods, eliminating the harmful unintended inputs generated by the foldable structure's movement.
Solution Approach 2:
The system introduces an intermediary detection and identification mechanism between the physical folding action and the touch input processing. The angle change detection and touch input identification systems act as intermediaries that filter out unintended inputs generated during structural transitions, allowing the foldable design to maintain its versatility while eliminating the associated harmful effects.
Data Source
AI summary
An example electronic device may include a foldable housing, including a hinge, a first housing connected to the hinge and including a first surface facing a first direction and a second surface facing a second direction opposite the first direction, and a second housing connected to the hinge, including a third surface facing a third direction and a fourth surface facing a fourth direction opposite the third direction, the second housing configured to be foldable with respect to the first housing about the hinge, wherein the first surface faces the third surface in a folded state of the electronic device; a display extending from the first surface to the third surface to provide the first surface and the third surface and including a touch controller configured to control a receiving function of an input on the display; a processor disposed inside the first or second housing and operatively coupled to the display; and a memory operatively connected to the processor, wherein the memory may store instructions that, when executed, cause the processor to control the electronic device to: detect the occurrence of changing an angle between the first housing and the second housing; receive a touch interrupt produced based on an input on the display; identify characteristics of the input in response to detecting the change in the angle; and determine whether to cancel the touch event corresponding to the input based on the characteristics of the input.