Optical Layered Body Antistatic Low Refractive Index Layer
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing optical layered bodies for image display devices require multiple layers to achieve antistatic properties, leading to increased costs and complexity, with existing methods either requiring excessive antistatic agents or compromising antistatic performance.
Innovation Solution
An optical layered body comprising a light-transmitting substrate with a hard coat layer and a low refractive index layer containing an antistatic agent, where the low refractive index layer is formed on the outermost surface, reducing the need for additional layers and minimizing antistatic agent usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an antistatic layer is formed between substrate and hard coat layer or between hard coat layer and low refractive index layer, then antistatic property is provided, but another layer must be formed making the process troublesome and antistatic performance becomes worse
Solution Approach 1:
The patent combines the low refractive index layer and antistatic layer into a single integrated layer. This low refractive index layer contains an antistatic agent (such as a quaternary ammonium salt) dispersed within it, allowing the layer to simultaneously provide both antireflection functionality and antistatic properties without requiring separate layers.
Solution Approach 2:
The low refractive index layer is designed to perform multiple functions: it reduces reflection of light (antireflection function) and simultaneously provides antistatic properties through the incorporated antistatic agent. This multi-functional design eliminates the need for additional dedicated antistatic layers.
2Reliability
If antistatic agent is added to hard coat layer, then antistatic property is achieved, but thickness of hard coat layer must be larger and large amount of expensive antistatic agent is required
Solution Approach 1:
The antistatic agent is locally concentrated in the low refractive index layer rather than being distributed throughout the entire hard coat layer. This localized placement allows for effective antistatic performance with a smaller total quantity of expensive antistatic agent.
Solution Approach 2:
By merging the antistatic function into the low refractive index layer, the patent reduces the overall amount of antistatic agent needed compared to adding it to the hard coat layer, while still achieving the required antistatic performance.
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
This configuration provides a cost-effective and simple method to achieve high antistatic properties while maintaining antireflection performance, suitable for displays like CRTs, LCDs, and PDPs, with reduced dust adhesion and efficient antistatic performance.
Implementation Method 1
a low refractive index layer which is formed on the outermost surface and contains an antistatic agent
Data Source
AI summary
An optical layered body wherein the additive amount of the antistatic agent can be reduced leading to a cost reduction while achieving high antistatic property simply and at a low cost. An optical layered body including an optical layered body comprising a light-transmitting substrate and at least a hard coat layer and a low refractive index layer, firmed on the light-transmitting substrate, wherein 1) the low refractive index layer is formed on the outermost surface, and 2) the low refractive index layer contains an antistatic agent.