Adjustable Curved Display Mechanism for Immersive Forward Sound

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Solution Overview

Problem

Conventional curved display apparatuses have fixed curvature, which limits user preference and immersion, and suffer from degraded sound quality due to 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 be adjusted between flat and curved modes, incorporating a vibration device to output sound forwardly, enhancing user immersion and sound quality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a flat display panel is curved at a certain curvature to maximize user immersion, then viewing distance deviation decreases and visual immersion is maximized, but the curvature cannot vary based on user preference and sound quality degrades due to interference

Engineering Contradiction:
Improvecurvature adaptabilityVSAvoiddevice complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The display panel transitions from a fixed curved state to a dynamic state where curvature can be adjusted between flat and curved configurations. The curvature adjustment mechanism allows the display panel to change its shape based on user preference, implementing adaptability while managing device complexity through a controlled transformation system.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The curvature parameter of the display panel is made variable rather than fixed. By changing the curvature parameter between different states (flat and curved), the system achieves adaptability to different user preferences and viewing conditions, resolving the contradiction between fixed curvature and user adaptability.

Inventive Principle:
Principle #35Parameter changes

2Object-affected harmful factors

If sound is output in forward or downward direction from a curved display panel, then acoustic immersion is reduced due to sound interference from walls or ground reflections

Engineering Contradiction:
Improvesound interferenceVSAvoidsound output configuration
Core Design Contradiction:
Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The sound output direction is made dynamic and adjustable rather than fixed. The sound device can change its output direction to optimize acoustic performance, allowing users to select the best configuration for their environment and reducing harmful sound interference from reflections.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The sound output direction parameter is made variable, allowing adjustment between different directions (forward, downward, or other angles). This parameter change enables the system to avoid harmful sound interference by selecting optimal output directions based on environmental conditions.

Inventive Principle:
Principle #35Parameter changes

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 adjustable curvature and forward sound output improve user immersion and sound quality by accommodating user preference and minimizing sound interference, thereby maximizing acoustic immersion.

Implementation Method 1

a vibration generating device including at least one sound generating module in the through hole to vibrate the display panel

Methodology Applied
Scientific EffectVibration: Vibration

Data Source

PatentEP3940679B1Display apparatus
Publication Date: 2023.10.18 LG DISPLAY CO LTD
  • EP3940679B1 patent drawingFigure 1~2
  • EP3940679B1 patent drawingFigure 3~4
  • EP3940679B1 patent drawingFigure 5

AI summary

A display apparatus may include 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 linear gear 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 linear gear, and a holder part rotatably supporting the center portion of the arc member on the supporting plate.