Variable-Curvature Display Structure With Forward Sound Output
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Solution Overview
Problem
Curved display apparatuses face issues with fixed curvature that do not adapt to user preferences and degrade sound quality due to sound interference, reducing immersion.
Innovation Solution
A display apparatus with a curvature variation device that allows the display panel to change curvature and a vibration device to output sound forwardly, enhancing user 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 of user watching an image is maximized, but curvature of the display panel cannot vary based on user preference
Solution Approach 1:
The display panel transitions from a static curved state to a dynamic state where curvature can be adjusted between flat and curved configurations. The curvature variation device enables the display panel to dynamically change its curvature radius according to user preferences, transforming a fixed-geometry structure into an adjustable one.
Solution Approach 2:
The curvature variation device is divided into multiple functional components including a support structure, driving mechanism, and curvature control elements. This segmentation allows independent optimization of each component and enables complex curvature adjustment functionality through coordinated operation of simpler sub-components.
2Object-affected harmful factors
If sound output direction is forward or downward with respect to display panel, then sound quality is degraded due to interference between sounds reflected by walls or ground
Solution Approach 1:
The sound output device utilizes ultrasonic vibration to generate acoustic radiation pressure that propels sound waves in the forward direction perpendicular to the display panel surface. This dimensional approach to sound propagation avoids traditional speaker placement issues and eliminates harmful reflections from walls and ground by creating a direct acoustic path.
Solution Approach 2:
The patent replaces traditional electroacoustic transducers (speakers) with a mechanical vibration-based sound generation system. The display panel itself acts as a vibration source, converting mechanical vibrations into sound waves through acoustic radiation pressure, thereby eliminating the need for separate speaker components and their associated placement constraints.
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 apparatus maintains a flat or curved display panel based on user preference and improves sound quality by directing sound forwardly, maximizing immersion.
Implementation Method 1
a rotation driver disposed at the supporting plate, 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
Implementation Method 3
a vibration device to output a sound in a forward direction with respect to the display panel, thereby simultaneously maximizing the immersion of a user watching an image
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.