LCD Panel Cushion Member Weight Distribution

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Solution Overview

Problem

Large LCD panels experience mechanical deformation due to uneven weight distribution, leading to light leakage caused by localized pressure on the panel guide, resulting in bending and changes in LC molecule arrangement.

Innovation Solution

Incorporating a cushion member or buffer structures on the bottom edge of the panel guide to distribute the weight of the LCD panel, preventing mechanical deformation and light leakage by reducing concentrated pressure.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of moving object

If the LCD panel size is increased, then the display area is improved, but the panel experiences mechanical deformation and light leakage due to uneven weight distribution

Engineering Contradiction:

Improvedisplay areaVSAvoidpanel deformation

Core Design Contradiction:

Area of moving objectVSReliability

Solution Approach 1:

The panel guide is divided into multiple support regions with ribs spaced at predetermined intervals along the bottom edge. This segmentation distributes the panel weight across multiple contact points rather than a single continuous support, reducing concentrated pressure and preventing mechanical deformation in large-sized panels.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The panel guide incorporates ribs with specific structural characteristics (height, spacing, and cross-sectional shape) at the bottom edge where support is needed. This local structural enhancement provides targeted support exactly where the panel weight creates pressure, preventing deformation at critical locations while maintaining overall panel integrity.

Inventive Principle:

Principle #3Local quality

2Force

If the rib width on the panel guide is increased to distribute pressure, then the support capability is improved, but the device complexity and manufacturing difficulty increase

Engineering Contradiction:

Improvepressure distributionVSAvoidpanel guide structure

Core Design Contradiction:

ForceVSDevice complexity

Solution Approach 1:

Instead of using a single wide rib, the support structure is segmented into multiple narrower ribs spaced at predetermined intervals. This segmentation achieves pressure distribution through quantity rather than individual width, simplifying manufacturing while maintaining effective weight distribution across the panel bottom edge.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The rib parameters (spacing, height, and cross-sectional dimensions) are optimized to provide adequate support with moderate rib width. By adjusting these parameters, the design achieves effective pressure distribution without requiring excessively wide ribs that would increase manufacturing complexity and material usage.

Inventive Principle:

Principle #35Parameter changes

3Device complexity

If concentrated pressure is applied to the panel guide, then the structural simplicity is maintained, but light leakage occurs due to bending and LC molecule arrangement changes

Engineering Contradiction:

Improvepanel guide structureVSAvoidlight leakage

Core Design Contradiction:

Device complexityVSObject-generated harmful factors

Solution Approach 1:

The panel guide uses multiple ribs spaced at predetermined intervals to distribute concentrated pressure into distributed support forces. This segmentation prevents localized bending of the LCD panel that would otherwise cause light leakage, while maintaining a relatively simple overall structure that is easy to manufacture and assemble.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The ribs act as intermediary support elements between the panel guide body and the LCD panel. These intermediaries distribute the contact pressure and prevent direct concentrated loading on the panel, thereby preventing the bending and LC molecule misalignment that cause light leakage.

Inventive Principle:

Principle #24Intermediary (Mediator)

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

Effectively prevents light leakage and mechanical deformation of the LCD panel by evenly distributing the weight, ensuring uniform rigidity and maintaining optimal LC molecule alignment.

Implementation Method 1

distributes the weight of the LCD panel, preventing mechanical deformation and light leakage by reducing concentrated pressure

Methodology Applied

Scientific EffectPressure distribution: Pascal's Law

Implementation Method 2

prevents mechanical deformation and light leakage by more evenly distributing the weight of the LC panel

Methodology Applied

Scientific EffectMechanical deformation prevention: Elasticity

Data Source

PatentUS8427597B2Module for liquid crystal display device having cushion members to prevent mechanical deformation and light leakage

Publication Date: 2013.04.23 LG DISPLAY CO LTD

AI summary

Disclosed is an LCD module that has a cushion member, or a plurality of buffer structures, which prevents mechanical deformation of the LCD panel, and the light leakage that results from the mechanical deformation. The plurality of cushion members are bonded to only a single inside edge of the panel guide and evenly distanced such that they provide a cushion to the LCD panel to reduce a concentrated weight generated by pressing due to the weight of the LCD panel. The cushion member, or the plurality of buffer structures, prevents mechanical deformation by distributing the weight of the LCD panel. The LCD module comprises an LCD panel, a backlight assembly, and a guide panel having the cushion member or buffer structures.