Flexible Display Curvature Adjustment With Lead Screw Backbone Links
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Solution Overview
Problem
Current display devices, particularly those with OLED panels, lack the ability to freely change curvature, limiting their adaptability and functionality in various applications.
Innovation Solution
A display device structure comprising a flexible display panel, a flexible plate, a backbone link system, a driving unit with a motor, and a lead screw mechanism that allows the display panel to change curvature by rotating the lead screw, which in turn moves the driving link and backbone link to adjust the curvature of the display panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a fixed curvature structure is used for the display panel, then the structural stability is improved, but the adaptability to different applications is worsened
Solution Approach 1:
The display device employs a dynamic curvature adjustment mechanism where the backbone link can rotate relative to the plate, and the driving link can extend or contract along the lead screw. This allows the display panel to transition between different curvature states (flat, concave, convex) while maintaining structural stability in each state, thereby resolving the contradiction between structural stability and adaptability.
2Adaptability or versatility
If the display panel is made flexible to change curvature, then the adaptability is improved, but the structural stability is worsened
Solution Approach 1:
The support structure is segmented into multiple rigid components (plate, backbone link, driving link) connected by rotational joints. This segmentation allows each component to maintain its own structural stability while the joints enable curvature changes, thus achieving both adaptability and structural stability.
Solution Approach 2:
The device combines flexible elements (flexible display panel, flexible plate) with rigid mechanical structures (backbone link, driving link, lead screw). The flexible components enable curvature changes while the rigid structures provide structural stability, resolving the contradiction between flexibility and stability.
3Adaptability or versatility
If a complex curvature adjustment mechanism is added, then the functionality is improved, but the device complexity is worsened
Solution Approach 1:
The patent replaces complex multi-actuator mechanical systems with a simplified mechanism using a single lead screw and motor. The lead screw converts rotational motion from the motor into linear motion of the driving link, which then controls the backbone link's rotation. This mechanical substitution reduces device complexity while maintaining the functionality to adjust curvature.
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
Enables the display device to change curvature freely, enhancing its adaptability and functionality by allowing the display panel to be concavely curved or bent to match the curvature of the plate, improving user interaction and device versatility.
Implementation Method 1
a lead screw 181 which extends long in a length direction of the backbone link 130, has one end connected to the motor 171, and has the other end connected to the driving link 150, wherein when the lead screw 181 rotates, the driving link 150 separates the other side of the backbone link 130 from the lead screw 181 while standing up
Data Source
AI summary
Disclosed is a display device. The display device includes: a flexible display panel 110; a flexible plate 120 which is located in a rear side of the display panel 110, and coupled to the display panel 110; a backbone link 130 which is coupled to a rear side of the plate 120, and is joint-connected to a plurality of links 130a; a driving unit 170 which is located in one side of the backbone link 130, and has a motor 171; a driving link 150 which is coupled to the other side of the backbone link 130; and a lead screw 181 which extends long in a length direction of the backbone link 130, has one end connected to the motor 171, and has the other end connected to the driving link 150, wherein when the lead screw 181 rotates, the driving link 150 separates the other side of the backbone link 130 from the lead screw 181 while standing up.