Rollable OLED Lift Assembly With Spacers for Noise Reduction
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Solution Overview
Problem
Display devices, particularly those using organic light emitting diodes (OLEDs), face issues with noise and vibration during operation, which affect their performance and user experience.
Innovation Solution
A display device design featuring a housing with a roller, a flexible OLED display, a lift assembly with pivotable arms and springs, and spacers to reduce noise and vibration by using a motor-driven lead screw system with lubricated spacers to smoothly extend and retract the display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a motor-driven lead screw system is used to extend and retract the flexible display, then the display can be automatically controlled and extended smoothly, but mechanical noise and vibration are generated during operation
Solution Approach 1:
The patent introduces spacers as intermediary components between the lead screw and the slider. These spacers act as mediators that reduce direct mechanical contact and friction, thereby minimizing noise and vibration while still enabling the automatic extension function through the motor-driven lead screw system.
Solution Approach 2:
The patent replaces traditional direct mechanical coupling with a lubricated spacer system. By introducing lubrication between moving parts and using spacers to distribute contact points, the system reduces mechanical friction and associated noise/vibration while maintaining the automated mechanical extension capability.
2Force
If multiple springs are aligned end-to-end to provide pushing force to the slider, then the lifting force is enhanced, but the complexity of the spring arrangement increases
Solution Approach 1:
The patent divides the spring system into multiple individual springs arranged in sequence along the lead screw. Each spring is positioned at specific intervals and can be independently adjusted, allowing the total lifting force to be distributed across multiple segments rather than requiring a single complex spring mechanism.
Solution Approach 2:
The patent applies different properties to different parts of the spring system by positioning spacers at specific locations between the springs. This allows each spring segment to be optimized for its local function while contributing to the overall lifting force, reducing the need for a uniformly complex design throughout the entire spring arrangement.
3Ease of operation
If spacers are positioned between each spring to reduce friction and noise, then operational smoothness is improved, but the number of components and assembly complexity increases
Solution Approach 1:
The spacers serve as intermediary components that are strategically positioned between the springs and along the lead screw. These spacers reduce friction and noise by distributing contact points and providing lubrication zones, while their standardized design allows them to be added as simple intermediate elements rather than complex integrated components.
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 effectively reduces noise and vibration, enhancing the operational stability and user experience of the display device by minimizing mechanical disturbances during operation.
Implementation Method 1
a lubricant is disposed inside the defined space
Implementation Method 2
a plurality of springs positioned along the driving rod, wherein the plurality of springs are aligned end-to-end to provide a pushing force to the slider
Data Source
AI summary
The present disclosure provides a display device according to one embodiment including: a housing, a roller disposed in the housing, a flexible display configured to be rolled around the roller, an upper assembly coupled to an upper region of the flexible display, a lift assembly comprising a plurality of arms coupled to the upper assembly and configured to extend the flexible display from the housing, at least one arm comprising a portion pivotably connecting to a slider through a rod, a motor configured to drive a driving rod to move the slider along the driving rod in a first horizontal direction to lift the lift assembly to extend the flexible display in a vertical direction, a plurality of springs positioned along the driving rod, wherein the plurality of springs are aligned end-to-end to provide a pushing force to the slider in the first horizontal direction and one or more spacers positioned between each of the plurality of springs.