Foldable Display Touch Control via Position Sensor
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Solution Overview
Problem
Conventional display devices with limited size face challenges in efficient touch input operations due to unnecessary power consumption and incorrect operations, particularly when a transparent display unit is folded or unfolded, requiring effective control of touch sensor units and display units based on device position.
Innovation Solution
A display device equipped with a touch sensor unit, a display unit, a transparent display unit, and a position sensor, where a processor controls the activation of these units based on the detected position, allowing for appropriate touch input schemes and display configurations, including scaling of activated touch sensor regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the transparent display unit is folded inward to overlap with the display unit, then the device achieves a compact form factor, but touch input operations become less accurate and power consumption increases due to incorrect operation detection
Solution Approach 1:
The system dynamically adjusts the activation state of touch sensor units based on the folding state of the transparent display unit. When folded inward, only the second touch sensor unit (on the transparent display unit) is activated, while the first touch sensor unit (on the main display unit) remains inactive. This dynamic configuration prevents incorrect touch detection and maintains input accuracy in the compact folded state.
Solution Approach 2:
Different regions of the device have different touch sensing capabilities activated based on local conditions. The second touch sensor unit on the transparent display unit is specifically activated when folded, allowing touch input detection on the transparent surface while the main display unit's touch sensor remains dormant, creating localized functional zones.
2Reliability
If all touch sensor units are continuously activated to ensure accurate touch detection, then touch input reliability is improved, but power consumption increases
Solution Approach 1:
The system employs periodic activation of touch sensor units based on the folding state rather than continuous activation. The processor controls the activation and deactivation of touch sensor units according to whether the transparent display unit is folded or unfolded, ensuring accurate touch detection only when needed and reducing power consumption during inactive periods.
Solution Approach 2:
The activation state of touch sensor units is dynamically adjusted based on real-time folding detection. When the transparent display unit is folded inward, the system activates only the necessary second touch sensor unit, reducing overall power consumption while maintaining touch input reliability for the active display surface.
3Area of stationary object
If the transparent display unit is unfolded to provide a larger display area, then user interaction capability is improved, but the device becomes more complex to control
Solution Approach 1:
The system automatically adapts its control configuration based on the folding state. When unfolded, both the first and second touch sensor units are activated, enabling touch input on both the main display unit and the transparent display unit. This dynamic configuration simplifies control by automatically adjusting which sensors are active, eliminating the need for manual intervention.
Solution Approach 2:
The processor automatically detects the folding state and configures the touch sensor activation accordingly without user intervention. The system self-adjusts which touch sensor units are activated based on whether the transparent display unit is folded or unfolded, reducing control complexity while maintaining large display area capability.
Data Source
AI summary
To this end, according to one embodiment, the display device, comprising: a touch sensor unit; a display unit; a transparent display unit; a position sensor unit; and a processor configured to: detect the second touch input by activating the second touch sensor unit and control the first object displayed in the display unit based on the detected second touch input when a first position, and detect the first touch input and the third touch input respectively by activating the first touch sensor unit and the third touch sensor unit, control the first object displayed in the display unit based on the detected first touch input, and control the second object displayed in the transparent display unit based on the detected third touch input when a second position.