Optical Member Integration for Slim LCD Bezel Reduction

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Solution Overview

Problem

Conventional liquid crystal display (LCD) devices face challenges in minimizing the bezel width and thickness due to the structural components like the support main and case top, which hinder the realization of a narrow bezel and lightweight, thinned design.

Innovation Solution

Integration of a liquid crystal panel with a backlight unit using an optical member that surrounds the side surfaces of the backlight unit, reducing the need for structural components like the support main and case top, and enhancing coupling power between the panels.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If structural components like support main and case top are used to assemble the display device, then the structural stability is improved, but the bezel area increases and the device thickness increases

Engineering Contradiction:
Improvestructural stabilityVSAvoidbezel area
Core Design Contradiction:
Stability of the object's compositionVSArea of stationary object

Solution Approach 1:

The optical member integrates multiple functions: it serves as both an optical element for light management and a structural component for assembling the liquid crystal panel to the backlight unit. This merging eliminates the need for separate support mains and case tops, thereby reducing bezel area while maintaining structural stability.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The optical member is designed to perform multiple functions simultaneously: light guiding, structural support, and assembly bonding. This multi-functionality allows the removal of dedicated structural components, reducing overall device complexity and bezel dimensions.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Stability of the object's composition

If structural components like support main and case top are used to assemble the display device, then the structural stability is improved, but the device thickness increases

Engineering Contradiction:
Improvestructural stabilityVSAvoiddevice thickness
Core Design Contradiction:
Stability of the object's compositionVSLength of stationary object

Solution Approach 1:

The optical member combines structural support and optical functions into a single component, eliminating the need for separate support mains and case tops that would increase device thickness. This integration enables a thinner overall device profile while maintaining necessary structural stability.

Inventive Principle:
Principle #5Merging (Combining)

3Stability of the object's composition

If multiple separate components are used for assembly, then the structural stability is improved, but the device complexity increases

Engineering Contradiction:
Improvestructural stabilityVSAvoidassembly complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The optical member consolidates multiple separate components (support main, case top, and optical elements) into a single integrated component. This reduction in part count simplifies the assembly process and reduces device complexity while maintaining structural integrity through the optical member's inherent bonding and support capabilities.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentEP2778772B1Display device
Publication Date: 2018.08.08 LG DISPLAY CO LTD
  • EP2778772B1 patent drawingFigure 1~2
  • EP2778772B1 patent drawingFigure 3A~3B
  • EP2778772B1 patent drawingFigure 3C

AI summary

Disclosed is a display device. The display device includes a liquid crystal panel, a backlight unit configured to include a light source that supplies light to the liquid crystal panel, and an optical member adhered to the liquid crystal panel. The optical member is formed to extend in an outer direction of the liquid crystal panel, and surrounds at least one of an outside of the liquid crystal panel and an outside of the backlight unit.