LCD Frame Protrusions for Structural Stability in Slim Designs
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Solution Overview
Problem
Liquid crystal displays (LCDs) face structural instability due to weakened frames when made slim, leading to vulnerability to external impacts and potential separation of components.
Innovation Solution
A frame design featuring a chassis with protrusions that cover insertion holes, providing additional support and preventing separation, combined with a molding made of materials like polycarbonate, ensuring firm integration and enhanced structural stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the thickness of the molding and chassis is reduced to achieve slimness, then the LCD becomes thinner and more compact, but the strength of the frame deteriorates and the liquid crystal display panel becomes vulnerable to external impact
Solution Approach 1:
The frame is segmented into multiple functional components: chassis, molding, and protrusions. This segmentation allows each component to have specialized functions - the chassis provides the base structure, the molding fills gaps and provides reinforcement, and the protrusions provide localized strengthening at critical points, collectively solving the strength problem while maintaining slimness
Solution Approach 2:
The frame uses a composite structure combining different materials - the chassis material and molding material work together to create a unified frame structure with enhanced strength. The protrusions, formed by injecting molding material into the chassis, create a composite structure that leverages the properties of both materials to improve overall frame strength while keeping the profile thin
2Length of moving object
If the thickness of the molding and chassis is reduced to achieve slimness, then the LCD becomes thinner, but the space combining the molding with the chassis becomes insufficient and they can be easily separated by external impact
Solution Approach 1:
The protrusions are formed in advance during the molding process by injecting molding material into the chassis. This preliminary action creates built-in anchoring features that prevent separation before external impact occurs. The protrusions extend into the molding to create mechanical interlocking, ensuring the components remain firmly combined under normal and impact conditions
Solution Approach 2:
The protrusions are nested within the molding structure, with the molding material injected into and around the protrusions. This nesting creates a hierarchical structure where the protrusions are embedded in the molding, which itself is attached to the chassis, forming a multi-layered integrated assembly that resists separation forces
3Strength
If protrusions are added to the chassis to improve strength and prevent separation, then the structural stability is improved, but the manufacturing complexity increases
Solution Approach 1:
The formation of protrusions is merged with the existing molding process. By injecting molding material into the chassis during the molding step, the protrusions are created as an integrated part of the manufacturing process rather than as a separate operation. This merging reduces the need for additional manufacturing steps and tools, offsetting the structural complexity with process simplicity
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 allows for the creation of slim LCDs with improved structural stability, preventing frame separation under external forces and maintaining component integrity.
Implementation Method 1
The bottom part of the chassis is formed with protrusions adjacent to the insertion holes and the protrusions protrude in a direction opposite to a direction in which the molding is combined with the insertion holes of the chassis
Implementation Method 2
forming a molding by flowing an injection molding material into the insertion holes of the chassis and hardening the injection molding material
Data Source
AI summary
A liquid crystal display that can be slimly formed. The liquid crystal display may include: a liquid crystal display panel; a backlight unit including: a light source; and a light guide plate receiving light emitted from the light source and diffusing the received light; and a frame receiving the liquid crystal display panel and the backlight unit. The frame includes: a chassis including a bottom part and a side wall, the bottom part having insertion holes; and a molding that is combined with the chassis through the insertion holes. In addition, the bottom part of the chassis is formed with protrusions adjacent to the insertion holes and the protrusions protrude in a direction opposite to a direction in which the molding is combined with the insertion holes of the chassis.