Display Device Side Frame with Grooved Coupling for Thin Profile

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Solution Overview

Problem

Existing display devices face challenges in achieving a thin profile while maintaining rigidity, which is crucial for modern display technologies such as liquid crystal displays (LCDs) to meet the demands of a thinner and more robust design.

Innovation Solution

The proposed display device incorporates a side frame with a symmetrical or asymmetrical cross-section, formed from metal materials, which includes grooves and reinforcement members to provide structural support and flexibility, coupled with an optical sheet and light assembly for efficient light distribution, and a back cover for protection, allowing for a thinner profile while maintaining rigidity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Length of moving object

If the display device uses a traditional frame structure, then structural strength is maintained, but the profile thickness increases

Engineering Contradiction:
Improveprofile thicknessVSAvoidstructural strength
Core Design Contradiction:
Length of moving objectVSStrength

Solution Approach 1:

The frame is divided into a first frame portion and a second frame portion that are coupled together through coupling portions. This segmentation allows each portion to be optimized independently - the first frame portion provides structural support while the second frame portion enables thin profiling, resolving the contradiction between thickness and strength

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The coupling portions are positioned within grooves of the respective frame portions, creating a nested structure where one frame portion fits into another. This nesting achieves strong structural connection while minimizing the overall profile thickness, as the coupling mechanism does not add significant external dimension

Inventive Principle:
Principle #7Nested doll (Nesting)

2Shape

If the display device uses a thin profile design, then aesthetic appeal improves, but structural rigidity deteriorates

Engineering Contradiction:
Improveprofile thinnessVSAvoidstructural rigidity
Core Design Contradiction:
ShapeVSStability of the object's composition

Solution Approach 1:

The frame uses composite construction with the first and second frame portions made from different materials or structural configurations. This allows optimization of each portion for its specific function - one for thinness and the other for rigidity - while their combination provides both properties simultaneously

Inventive Principle:
Principle #40Composite materials

Solution Approach 2:

The coupling portions extend in a direction perpendicular to the main plane of the frame, utilizing the Z-dimension to create structural connection without increasing the X or Y dimensions. This dimensional approach maintains thin profile while achieving structural rigidity through out-of-plane coupling elements

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Data Source

PatentEP3400481B1Display device
Publication Date: 2023.03.15 LG ELECTRONICS INC
  • EP3400481B1 patent drawingFigure 1
  • EP3400481B1 patent drawingFigure 2
  • EP3400481B1 patent drawingFigure 3

AI summary

A display device comprising: a display panel having a back surface and a front surface; a side frame extending along a side of the display panel and including a flat portion facing a part of the back surface of the display panel and an inclined portion extended rearward away from the flat portion and being exposed outside of the display device; a main frame comprising a plate and being coupled with the side frame; and a light source between the display panel and the main frame, wherein the part of the back surface of the display panel is fixed on the flat portion of the side frame.