Sliding-Rollable Display Position Control for Full Roll Travel
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Solution Overview
Problem
Existing sliding-rollable display devices face challenges in accurately controlling the movement of the movable housing between rolled and unrolled positions, leading to incomplete unrolling or rolling, which affects user experience.
Innovation Solution
A driving method and apparatus that utilize a sensing element and sensing modules to detect the movable housing's position, with a timer-controlled driving motor to ensure accurate positioning by determining the duration of the timer based on the distance and moving speed of the housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the movable housing is controlled to move between first and second positions using sensing modules and timers, then the positioning accuracy is improved, but the device complexity increases
Solution Approach 1:
The patent pre-calculates and stores timing information corresponding to different moving speeds and distances before actual operation. When the housing needs to move, the system simply retrieves the pre-calculated timing data based on the detected starting position and target position, avoiding complex real-time calculations and reducing positioning errors without requiring complex real-time control mechanisms
Solution Approach 2:
The patent introduces timing information as an intermediary parameter that bridges the relationship between moving speed, distance, and positioning accuracy. Instead of directly controlling position through complex feedback mechanisms, the system uses the intermediary timing data to achieve accurate positioning by controlling the duration of motor operation, thereby simplifying the overall control system
2Manufacturing precision
If the timer duration is determined by distance and moving speed, then the full unrolling and rolling travel is ensured, but the loss of time for calculating and storing timing data occurs
Solution Approach 1:
The system performs timing calculations in advance and stores the results in a lookup table during the device setup or initialization phase. When actual rolling or unrolling operations are needed, the system only needs to query the pre-calculated timing data based on current speed and distance parameters, eliminating the need for real-time calculations and reducing operational delays
Solution Approach 2:
The patent pre-establishes the relationship between moving speed, distance, and required timing through offline calculations and stores this data for rapid retrieval. This preliminary preparation ensures that during actual operation, the system can immediately determine the correct timer duration without computational delays, thus ensuring complete travel while minimizing time loss
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
The solution ensures accurate control of the movable housing's position, ensuring full unrolling and rolling travel, thereby enhancing the user experience of the sliding-rollable display device.
Implementation Method 1
a sensing element is provided on the movable housing, sensing modules are provided at the first position and the second position for detecting the sensing element
Data Source
AI summary
Driving method, apparatus, and sliding-rollable display device are disclosed. The sliding-rollable display device includes a movable housing, a driving motor and a flexible display screen, at least a portion of which covers the movable housing. The driving motor drives the movable housing to move between first and second positions, the first position is a position of the movable housing when the sliding-rollable display device is fully rolled and the second position is a position of the movable housing when the sliding-rollable display device is fully unrolled. A sensing element is provided on the movable housing, sensing modules are arranged at the first and second positions for detecting the sensing element. The driving motor is controlled to drive the movable housing to move to the first or second position, and to stop driving the movable housing when a first timer expires.