Nested Motor in Panel Roller for Flexible Display Winding
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Solution Overview
Problem
Existing display devices face challenges in stably rolling or unrolling flexible display panels and providing a frame structure that allows the display panel to cover or open effectively.
Innovation Solution
A display device comprising a flexible display panel, a long panel roller for winding or unwinding the panel, a driving gear connected to the panel roller, and a motor inside the panel roller to power the driving gear, along with a frame structure that includes a bottom frame, vertical frames, lead screws, and sliders to manage the panel's movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a flexible display panel is wound around a panel roller, then the display panel can be stored or transported in a compact form, but the mechanism for stably rolling or unrolling the panel becomes complex
Solution Approach 1:
The motor is placed inside the panel roller, creating a nested structure where the power source is contained within the roller itself. This integration reduces the number of external components and simplifies the overall rolling mechanism while maintaining the ability to compactly store the flexible display panel.
2Device complexity
If a motor is placed inside the panel roller to power the driving gear, then the structure is compact, but the motor location and power transmission become complex
Solution Approach 1:
A driving gear acts as an intermediary mechanism between the motor and the panel roller. The motor, positioned inside the roller, drives the driving gear which in turn controls the rolling and unrolling of the panel. This intermediary gear system enables compact motor placement while maintaining manufacturability through standardized gear components.
3Manufacturing precision
If a frame structure with lead screws and sliders is used to manage panel movement, then the panel can be precisely positioned, but the device complexity increases
Solution Approach 1:
The patent replaces complex mechanical positioning systems with a simpler motor-driven gear mechanism. Instead of using lead screws and sliders for panel positioning, the invention uses the motor and driving gear to directly control the rolling and unrolling process, achieving precise positioning through rotational control while reducing overall structural complexity.
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 provides a stable mechanism for rolling or unrolling flexible display panels and a frame structure that enables the panel to cover or open, enhancing the usability and functionality of display devices.
Implementation Method 1
a motor which is located inside the panel roller, and provides power to the driving gear
Implementation Method 2
a first lead screw which is parallel to the first vertical frame, and rotatably coupled to the bottom frame; a first slider which moves in a length direction of the first lead screw when the first lead screw rotates
Data Source
AI summary
Disclosed is a display device. The display device includes: a flexible display panel; a panel roller which extends long, and around which the display panel is wound, or from which the display panel is unwound; a driving gear which is located in one side of the panel roller, and rotates together with the panel roller; and a motor which is located inside the panel roller, and provides power to the driving gear.