Flexible Display Slide-In Sensor Error Compensation
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Solution Overview
Problem
In electronic devices with flexible displays, the measured sliding distance using sensors often differs from the actual sliding distance due to errors from magnetic force changes, temperature effects, motor wear, and sensor performance issues, leading to incorrect screen display sizes and positions.
Innovation Solution
An electronic device with a flexible display that includes a processor connected to a sensor and memory, capable of identifying the actual sliding distance, adjusting the user interface size or position based on touch information, and displaying the corrected interface, even when the measured sliding distance differs from the actual distance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a magnetic force sensor is used to measure sliding distance, then the device can detect moving distance for screen adjustment, but measurement precision deteriorates due to magnetic force changes, temperature effects, motor wear, and sensor performance issues
Solution Approach 1:
The system uses touch coordinate information as feedback to detect and correct discrepancies between sensor-measured distance and actual display position. When a touch event occurs, the processor calculates the expected touch coordinate based on sensor data and compares it with the actual touch coordinate. This feedback loop enables continuous calibration and compensation of measurement errors without requiring hardware changes.
Solution Approach 2:
The system dynamically adjusts display parameters (screen size, position, layout) based on corrected distance calculations. By changing the display parameters according to the compensated distance value rather than relying solely on raw sensor data, the system adapts to measurement inaccuracies and maintains accurate screen-housing correspondence throughout the sliding range.
2Device complexity
If sensor-measured distance is used directly for UI display, then the system operation is simple, but the user interface position and size become incorrect due to measurement errors
Solution Approach 1:
The system introduces touch coordinate information as an intermediary element to bridge the gap between sensor measurement and actual display position. The touch coordinate serves as a reference point that mediates the correction process, allowing the system to calculate and apply compensation values without adding complex hardware components.
Solution Approach 2:
The system replaces mechanical calibration methods with a computational approach. Instead of using physical reference marks or mechanical alignment mechanisms, the system uses software-based coordinate transformation and mathematical compensation algorithms to correct measurement errors, reducing mechanical complexity while improving precision.
3Area of moving object
If the flexible display extends physically by a certain distance, then the screen area increases, but the displayed UI size becomes incorrect due to sensor measurement errors
Solution Approach 1:
The system dynamically adjusts UI size and position based on real-time corrected distance calculations rather than using fixed scaling relationships. As the flexible display extends or retracts, the system continuously updates the UI parameters according to the compensated distance value, ensuring that UI elements remain proportionally correct relative to the actual visible screen area throughout the entire range of motion.
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
Ensures a user interface that accurately corresponds to the actual screen size, providing a correct and responsive display experience by accounting for sensor inaccuracies and physical changes in the device's sliding state.
Implementation Method 1
a magnetic force sensor may be affected by at least one of the occurrence of errors due to temporary or permanent characteristic change of external or internal magnetic force
Data Source
AI summary
According to various embodiments, an electronic device may include: a flexible display having a first portion disposed to be visible from an outside and a second portion extending from the first portion and accommodated in an inner space to be invisible from the outside in a slide-in state; a housing whose having a variable size wherein the flexible display is configured to be expanded in response to a change from the slide-in state to a slide-out state; a sensor disposed in the inner space and configured to detect a moving distance of the flexible display; a memory; and a processor operatively connected to the flexible display, the sensor, and the memory. The processor may be configured to: identify a first distance for the flexible display through the sensor in response to the change from the slide-in state to the slide-out state, control the display to display a user interface through the flexible display based on the first distance, detect a touch on at least a partial region of the flexible display, identify a second distance for the flexible display based on coordinate information corresponding to the detected touch, adjust a size or position of the user interface based on a difference value between the first distance and the second distance, and control the display to display the adjusted user interface through the flexible display.