Antistatic Light Guide Plate with Conductive Film
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Solution Overview
Problem
Liquid crystal display (LCD) modules often suffer from defects such as white dots and scratches caused by foreign objects adhering to the light guide plate (LGP) due to electrostatic charges, which existing technologies fail to effectively dissipate.
Innovation Solution
An antistatic light guide plate (LGP) is created by coating an electro-conductive film made of organic macromolecular compounds like polyaniline or polythiophene on its surfaces and attaching an electro-conductive adhesive tape with a reflective layer, allowing for the effective release of electrostatic charges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a regular LGP is used, then manufacturing cost is low and fabrication is simple, but electrostatic charges accumulate causing foreign objects to adhere and create defects
Solution Approach 1:
The patent applies composite materials by combining the regular LGP substrate with an electro-conductive organic macromolecular compound coating. This composite structure integrates the optical properties of the LGP with the electro-conductive properties of the organic macromolecular compound, enabling static charge dissipation while maintaining the original LGP functionality and minimizing structural complexity
Solution Approach 2:
The patent extracts the electro-conductive function from traditional metal-based conductive materials and implements it through an organic macromolecular compound coating. This extraction allows the LGP to gain electro-conductive properties without incorporating complex metal layers or conductive structures, thus preventing defects while keeping the device structure simple
2Reliability
If an electro-conductive film is coated on the LGP surfaces, then electrostatic charges are effectively released, but manufacturing process becomes more complex
Solution Approach 1:
The patent replaces traditional metal-based electro-conductive materials with an organic macromolecular compound coating system. This substitution enables the electro-conductive function to be achieved through a simpler coating and drying process rather than complex sputtering, evaporation, or metal layer deposition techniques, thereby improving ease of manufacture while maintaining reliable electrostatic charge dissipation
Solution Approach 2:
The patent changes the material parameter from inorganic metal conductors to organic macromolecular compounds with electro-conductive properties. This parameter change allows the electro-conductive solution to be applied as a liquid coating that can be uniformly absorbed by the LGP surface, followed by simple drying, thereby simplifying the manufacturing process while achieving effective electrostatic charge release
3Ease of manufacture
If organic macromolecular compounds like polyaniline or polythiophene are used, then electro-conductive properties are achieved with simpler processing, but material selection and solution preparation become more specialized
Solution Approach 1:
The patent applies local quality by using electro-conductive organic macromolecular compounds specifically on the surfaces of the LGP where electrostatic charge accumulation occurs. The electro-conductive solution is uniformly coated on the outer surfaces, providing targeted electro-conductive functionality exactly where needed, while the bulk LGP material remains unchanged, thus achieving processing simplicity without unnecessary material complexity throughout the entire structure
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 electro-conductive LGP effectively prevents electrostatic charges from attracting foreign objects, thereby reducing defects like white dots and scratches, ensuring improved performance and reliability of LCD modules.
Implementation Method 1
an electro-conductive film made of an electro-conductive organic macromolecular compound is disposed on one or more surfaces of the LGP
Implementation Method 2
making one or more surfaces of a regular LGP adsorb the electro-conductive solution uniformly
Data Source
AI summary
A light guide plate (LGP) and a method for fabricating the same are disclosed, the LGP is electro-conductive. The fabrication method including the following steps: preparing an electro-conductive solution; making one or more surfaces of a regular LGP adsorb the electro-conductive solution uniformly; drying the LGP which adsorbs the electro-conductive solution to form an electro-conductive film on the one or more surfaces. A method for fabricating the LGP is also disclosed in which electro-conductive organic macromolecular compound is used as a raw material. The effect of static charge on the LGP is avoided by the electro-conductive property of the LGP.