Adjustable Display Device Curvature Control Mechanism
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Solution Overview
Problem
Existing display devices struggle to provide both wide viewing angles in flat mode and enhanced immersion in curved mode while minimizing vibrations and noise during mode changes, and maintaining a lightweight and thin profile.
Innovation Solution
A variable display device with a backcover system that includes an angle block module and a flatness controlling unit, utilizing a motor-driven mechanism to adjust the curvature and flatness, featuring a flexible OLED display panel for seamless mode transitions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a curved display device is used to improve immersion and viewing comfort, then the viewing experience is enhanced, but the device cannot provide wide viewing angles in flat mode
Solution Approach 1:
The display device employs a dynamic curvature adjustment mechanism that allows the display panel to transition between flat and curved states. The curvature adjustment module includes a driving mechanism with multiple linkage units that can dynamically change the curvature radius of the display panel, enabling the device to adapt to different viewing scenarios and resolve the contradiction between immersion (curved mode) and wide viewing angles (flat mode).
Solution Approach 2:
The curvature adjustment mechanism is divided into multiple independent linkage units (first linkage units and second linkage units) that can operate independently or in coordination. Each linkage unit consists of separate components (linkage bodies, connecting rods, pivots) that can be individually controlled, allowing precise adjustment of different regions of the display panel to achieve optimal curvature for various viewing conditions.
2Adaptability or versatility
If a complex curvature adjustment mechanism is added to enable mode switching, then adaptability is improved, but the device weight and thickness increase
Solution Approach 1:
The display device utilizes a flexible display panel that can be bent and deformed without breaking. The flexible panel works in conjunction with the linkage mechanism to achieve curvature adjustment, eliminating the need for heavy rigid structures. The flexible nature of the panel allows for lightweight construction while maintaining the ability to switch between flat and curved modes effectively.
Solution Approach 2:
The patent replaces traditional heavy mechanical curvature adjustment systems with a more efficient linkage mechanism driven by a compact motor. The linkage units use lever arms and connecting rods to amplify the motor's output, achieving effective curvature adjustment with minimal weight. This mechanical substitution optimizes the weight-to-functionality ratio by using force multiplication through the linkage system.
3Reliability
If a rigid curvature adjustment mechanism is used to maintain structural stability, then reliability is improved, but vibrations and noise increase during mode changes
Solution Approach 1:
The curvature adjustment mechanism incorporates damping elements and friction-based pivot joints that provide inherent vibration suppression during mode transitions. The pivot connections between linkage units include frictional elements that dampen oscillations and prevent excessive vibrations. This beforehand cushioning approach reduces noise and vibrations during curvature adjustment while maintaining structural stability throughout the transition process.
Data Source
Figure 1A~1B
Figure 2
Figure 3
AI summary
A display device (100) capable of being adjusted between flat and curved comprising: a display panel; a back cover system (200) including: at least two angle block modules (210), one in each half of the back cover system, wherein moving the angle block modules (210) changes a curvature of the display panel; a driving system (220) to move the angle block modules (210). A driving system (220) includes a motor; a gear connected to the motor; block units (211) arranged in a row in the angle block module (210) and positioned at a rear of the display panel; a shaft beaung (217) connecting a first block unit (211a) to a second block unit (211b). A flatness controlling unit (300) comprises an angle block module (210) having a flatness controlling groove (320); a wire (310) guided by the flatness controlling groove (320); and a tension adjusting part (A) including a portion of the wire (310) and a spring (330) connected to the portion of the wire (310).