Display Panel Vibration Sound Output and Impact Protection

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Solution Overview

Problem

Conventional display apparatuses face challenges in directing sound output towards the viewer, resulting in poor sound quality and design constraints due to separate speaker installations, which hinder immersion and occupy valuable space.

Innovation Solution

A display apparatus design that incorporates a vibration generating device within a through hole in the rear structure of the display panel, utilizing a vibration transfer member to direct sound output to the front and incorporating a buffer member to prevent damage from external impacts and enhance design aesthetics.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a separate speaker is installed in the display apparatus, then sound can be provided, but the speaker occupies space and limits design flexibility

Engineering Contradiction:

Improvesound qualityVSAvoidspace occupation

Core Design Contradiction:

ReliabilityVSVolume of moving object

Solution Approach 1:

The patent merges the speaker function with the display panel by integrating the vibration generating device directly into the rear structure of the display panel. The display panel itself serves as the sound output component, eliminating the need for separate speaker units and optimizing space utilization while maintaining sound quality.

Inventive Principle:

Principle #5Merging (Combining)

2Reliability

If a separate speaker is installed, then sound can be output, but the sound travels toward side or upper/lower ends instead of toward the viewer

Engineering Contradiction:

Improvesound output capabilityVSAvoidsound direction toward viewer

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The display panel serves multiple functions simultaneously: it acts as both the visual display surface and the sound output component. By integrating the vibration generating device into the rear structure, the panel can vibrate to produce sound that travels toward the viewer while maintaining its primary display function, achieving multi-functionality without compromising either capability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Volume of moving object

If the vibration generating device is integrated into the display panel, then space is optimized, but the device may be damaged by external impacts

Engineering Contradiction:

Improvespace optimizationVSAvoiddamage from external impact

Core Design Contradiction:

Volume of moving objectVSObject-affected harmful factors

Solution Approach 1:

The patent incorporates a buffer member between the vibration generating device and the external environment. This buffer member is configured to absorb or mitigate external impacts before they reach the vibration generating device, providing beforehand cushioning that protects the integrated device from damage while maintaining the space-efficient integrated design.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

4Object-affected harmful factors

If the buffer member contacts the vibration generating device during normal operation, then protection is provided, but the vibration transfer is hindered

Engineering Contradiction:

Improveprotection from impactVSAvoidvibration transfer efficiency

Core Design Contradiction:

Object-affected harmful factorsVSReliability

Solution Approach 1:

The buffer member is designed with dynamic characteristics that allow it to change its interaction state based on operating conditions. During normal vibration operation, the buffer member remains separated from the vibration generating device, allowing unrestricted vibration transfer. When external impact occurs, the buffer member contacts the device to provide protection. This dynamic behavior ensures both efficient vibration transfer and impact protection without compromise.

Inventive Principle:

Principle #15Dynamics

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 directs sound output towards the viewer, enhancing sound quality and immersion while minimizing space usage and protecting the vibration generating device from external impacts, thereby improving both audio and visual experience.

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

Implementation Method 2

a vibration transfer member between the display panel and the vibration generating device, the vibration transfer member configured to transfer a vibration of the vibration generating device to the display panel

Methodology Applied

Scientific EffectMechanical vibration transfer: Vibration

Data Source

PatentUS11012781B2Display apparatus

Publication Date: 2021.05.18 LG DISPLAY CO LTD

AI summary

A display apparatus includes a display panel configured to display an image; a rear structure supporting the display panel and including a through hole in a thickness direction; a vibration generating device including at least one sound generating module in the through hole to vibrate the display panel; a vibration transfer member between the display panel and the vibration generating device, the vibration transfer member configured to transfer a vibration of the vibration generating device to the display panel; and a buffer member on one of the display panel and the rear structure.