Retractable Display Panel Feedback Control for Precise Positioning
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Solution Overview
Problem
Existing display devices with retractable screens face challenges in accurately controlling the movement of display panels, leading to potential damage from excessive movement and motor overload, and existing solutions are either inaccurate, costly, or difficult to miniaturize.
Innovation Solution
A display device with a motor-driven module, control module, and first and second modules that use real-time monitoring of the movement state through first and second units to provide feedback and control signals, ensuring accurate positioning and preventing damage by intersecting directions for precise movement control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a motor-driven module is used to drive the display panel to move, then the display panel can be retracted to improve portability and viewing experience, but the display panel may move excessively causing damage to the screen or driving mechanism
Solution Approach 1:
The patent employs a feedback mechanism where a first unit (sensor) detects the position of the display panel during movement, and sends signals to a control module. The control module receives this feedback and sends control signals to the motor-driven module to stop the movement when the display panel reaches predetermined positions, thereby preventing excessive movement and damage.
Solution Approach 2:
The patent sets predetermined stop positions in advance within the movement range of the display panel. The control module is programmed with these predetermined positions, and when the sensor detects that the display panel reaches these positions, it automatically stops the motor-driven module, preventing excessive movement before damage can occur.
2Device complexity
If traditional control methods are used to control the motor-driven module, then the structure can be simple, but the control precision is insufficient leading to inaccurate positioning
Solution Approach 1:
The patent introduces a feedback control loop where the first unit (sensor) continuously monitors the actual position of the display panel and reports it to the control module. The control module compares the actual position with the target position and adjusts the motor-driven module accordingly, achieving precise positioning without requiring overly complex mechanical structures.
Solution Approach 2:
The patent replaces complex mechanical positioning mechanisms with an electrical control system. Instead of using intricate mechanical stops or guides, the system uses a sensor to detect position and an electronic control module to regulate motor movement, achieving higher precision with simpler mechanical components.
3Measurement precision
If high-precision control solutions are implemented, then positioning accuracy improves, but the device becomes more costly and difficult to miniaturize
Solution Approach 1:
The patent uses a feedback-based control system that achieves high positioning accuracy through intelligent control rather than high-precision mechanical components. The sensor and control module work together to compensate for manufacturing tolerances, allowing the use of standard, easily manufacturable components that can be miniaturized for mobile devices.
Solution Approach 2:
The patent changes the control parameters and control strategy rather than relying on high-precision mechanical parameters. By using electronic feedback control, the system achieves accurate positioning through software/algorithms rather than requiring extremely tight mechanical tolerances, making the device easier to manufacture and miniaturize.
Data Source
AI summary
Provided is a display device. The display device includes: a display panel; a motor-driven module, which is configured to be connected to the display panel and drive the display panel to move; a control module, which is configured to control the motor-driven module; a first module and a second module disposed opposite to each other in a first direction, where the first module and the second module are able to move relatively in a second direction; a first unit, which is disposed on a side of the first module facing the second module; a second unit, which is disposed on a side of the second module facing the first module; and in response to a position relationship between the first unit and the second unit, providing, by the control module, a first control signal for the motor-driven module, where the first direction intersects the second direction.