Guide Panel Composite Structure for LCD Stiffness
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Solution Overview
Problem
Liquid crystal display devices face issues with guide panels being easily bent and having insufficient stiffness due to reduced thickness, leading to increased susceptibility to bending and torsion under external forces.
Innovation Solution
Incorporating a guide panel structure with a metal chassis combined with a first mold and a second mold, where the first mold is formed of light-absorbing resin and the second mold is formed of light-reflecting resin, to enhance resistance to bending and torsion, and improve stiffness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the thickness of the guide panel is decreased to reduce bezel area, then the bezel area is reduced, but the stiffness and resistance to bending of the guide panel deteriorates
Solution Approach 1:
The guide panel uses a composite structure combining a metal chassis with plastic molds (first mold and second mold). The metal chassis provides high stiffness and strength to compensate for the reduced thickness, while the plastic molds provide light-absorbing and light-reflecting functions. This composite material approach allows the guide panel to maintain structural integrity with decreased bezel area.
2Area of stationary object
If the thickness of the guide panel is decreased to reduce bezel area, then the bezel area is reduced, but the resistance to bending under external forces deteriorates
Solution Approach 1:
The metal chassis in the composite structure provides high mechanical strength and resistance to bending forces, compensating for the reduced thickness of the guide panel. This ensures reliability and structural stability even with a narrow bezel design.
3Object-generated harmful factors
If a plastic guide panel is used to surround the backlight unit, then light leakage is reduced, but the guide panel is easily bent by small forces
Solution Approach 1:
The guide panel combines plastic molds for light management functions with a metal chassis for structural support. The plastic first mold absorbs light and the plastic second mold reflects light, while the metal chassis provides rigidity and resistance to bending, solving both the light leakage and structural strength issues simultaneously.
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 effectively suppresses light leakage and improves brightness while providing increased stiffness to the guide panel, reducing the likelihood of bending and torsion, thus enhancing the structural integrity and performance of the liquid crystal display device.
Implementation Method 1
The first mold is formed of a light absorbing resin
Implementation Method 2
the second mold is formed of a light reflecting resin
Data Source
AI summary
A liquid crystal display device includes a liquid crystal display panel, a backlight unit under the liquid crystal display panel, and a guide panel surrounding the backlight unit. The guide panel includes a metal chassis, a first mold, and a second mold. The metal chassis has a plate shape, includes a plurality of through holes, and is formed of a metal material. The first mold is on at least a part of an upper surface and a lateral surface of the metal chassis and within the through holes and is formed of a light absorbing resin. The second mold is between the first mold and the backlight unit and is formed of a light reflecting resin.