LCD Light Guide Plate Pad Support Structure

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Solution Overview

Problem

LCD devices are prone to deformation and separation of components due to external forces like vibration and heat, resulting in noise and damage from reciprocal friction, as the binding forces between components are insufficient.

Innovation Solution

Incorporating first and second pad supporting portions with cavities on the main support to securely hold the light guide plate and optical sheet, respectively, using adhesion members like double-sided tape to enhance the binding force and prevent movement of these components.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the binding force between components is increased to prevent separation under external impact, then the stability of the LCD device is improved, but the device complexity increases due to additional support structures

Engineering Contradiction:
ImprovestabilityVSAvoidstructure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The pad supporting portions are integrated into the main support structure by forming cavities within it, creating a nested configuration where the support function is embedded in the existing structure rather than adding separate external components

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

Pads are introduced as intermediary elements between the main support and the optical components (light guide plate and optical sheet), providing both mechanical support and cushioning to prevent direct contact and reciprocal friction

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If adhesion members are added to enhance binding force between components, then the reliability is improved, but the manufacturing complexity increases

Engineering Contradiction:
Improvebinding forceVSAvoidmanufacturing process
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The pads are pre-positioned within the cavities of the main support structure during assembly, and adhesion members are applied in advance to bond the pads to the optical components before final assembly, streamlining the manufacturing process

Inventive Principle:
Principle #10Preliminary action

3Reliability

If the freedom of movement of pads is reduced to prevent component movement, then the stability is improved, but the ease of operation during assembly decreases

Engineering Contradiction:
Improvecomponent stabilityVSAvoidassembly operation
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The pads are designed with elastic properties that allow them to be compressible and flexible during assembly, enabling easy insertion and positioning, while automatically providing cushioning and stabilization once assembled

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 stabilizes the LCD device by reducing the freedom of movement of the pads, enhancing the binding force between components, thereby minimizing damage and noise from external forces.

Implementation Method 1

at least one first pad for preventing the movement of the light guide plate through contact with the light guide plate between the main support and the light guide plate

Methodology Applied
Scientific EffectAdhesion: Adhesive

Data Source

PatentUS8879022B2Liquid crystal display device for minimizing inferiority by external and method of making thereof
Publication Date: 2014.11.04 LG DISPLAY CO LTD
  • US8879022B2 patent drawing
  • US8879022B2 patent drawing
  • US8879022B2 patent drawing

AI summary

Disclosed is a liquid crystal display (LCD) device capable of stable support of components. The LCD device comprises an LCD panel; a main support for supporting edges of the LCD panel; a light guide plate disposed at a rear side of the LCD panel; and at least one first pad for preventing the movement of the light guide plate through contact with the light guide plate between the main support and the light guide plate, wherein at least one first pad supporting portion is formed at one surface of the main support being faced with the light guide plate. Accordingly, defects of the LCD device resulting from an external force such as impact or heat are minimized, and the LCD device has a firm and stable structure.