Variable-Curvature Display Panel With Forward Sound Radiation
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Solution Overview
Problem
Curved display apparatuses face challenges in maintaining user immersion due to fixed curvature and degraded sound quality from sound interference, making it difficult to accurately transfer sound and maintain acoustic immersion.
Innovation Solution
A display apparatus with a curvature variation device that allows the display panel to change curvature based on user preference and outputs sound forwardly, using a vibration device to enhance sound quality and immersion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a flat display panel is curved at a certain curvature to decrease viewing distance deviation, then immersion is maximized, but the curvature cannot vary based on user preference
Solution Approach 1:
The display panel transitions from a fixed curved state to a dynamically adjustable state, allowing curvature to be changed based on user preference. The curvature variation device enables the display panel to switch between different curvature levels (flat, mildly curved, highly curved) to adapt to different viewing scenarios and user needs.
Solution Approach 2:
The display apparatus integrates multiple functions into a single system: it can display images with variable curvature, output sounds in multiple directions (forward, downward, omnidirectional), and adjust acoustic field characteristics. This multi-functionality allows the device to serve diverse user needs without requiring separate dedicated devices.
2Reliability
If sound is output in forward or downward direction to match image display, then sound-image synchronization is achieved, but sound quality degrades due to interference from walls or ground reflections
Solution Approach 1:
The sound output system transitions from fixed directional output to dynamic multi-directional output. The sound device can switch between forward direction, downward direction, and omnidirectional output modes, allowing the system to adapt to different acoustic environments and minimize reflection interference by selecting the most appropriate output direction.
Solution Approach 2:
The display panel itself serves as an intermediary sound radiation surface. By vibrating the display panel to generate sound waves, the system uses the panel's large surface area to radiate sound uniformly in multiple directions, particularly in the forward direction toward the user, reducing reliance on traditional speaker placements that cause reflection interference.
3Adaptability or versatility
If a curvature variation device is added to allow curvature adjustment, then user immersion is enhanced, but device complexity increases
Solution Approach 1:
The curvature variation device is integrated with the display panel structure, combining the image display function and curvature adjustment function into a unified system. The actuator, arc member, and supporting plate work together with the display panel as a coordinated system, rather than adding a completely separate mechanism, thereby reducing overall complexity.
Solution Approach 2:
The display panel utilizes flexible materials and thin-film construction that allow it to be curved without damage. The panel's inherent flexibility enables curvature variation when actuated, and it returns to its original state when the actuation force is removed, providing a simple yet effective curvature adjustment mechanism without requiring complex mechanical structures.
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 display apparatus maintains user immersion by adjusting curvature and improves sound quality by directing sound forward, minimizing interference and enhancing acoustic experience.
Implementation Method 1
a rectilinear driver disposed on the supporting plate to perform a rectilinear motion in a second direction intersecting with the first direction based on a rotation of the rotation driver
Implementation Method 2
a rotation link part coupled to a center portion of the arc member on the supporting plate to perform a rotational motion based on a rectilinear motion of the rectilinear driver to rotate the center portion of the arc member
Data Source
AI summary
A display apparatus comprises a display device including a display panel and a back cover on a rear surface of the display panel, and a curvature variation device at the back cover to vary a curvature of the display device, the curvature variation device may include an arc member at a rear region of the display device parallel to a first direction, a supporting plate at the rear region of the display device, a rotation driver on the supporting plate, a rectilinear driver on the supporting plate to perform a rectilinear motion, a rotation link part coupled to a center portion of the arc member on the supporting plate to rotate the center portion of the arc member based on a rectilinear motion of the rectilinear driver, and a holder part rotatably supporting the center portion of the arc member on the supporting plate.